7100G泡沫测试方法

TOYOTA ENGINEERING STANDARD

NO.:

TSM7100G

GENERAL TEST METHOD FOR POLYURETHANE FOAMS TITLE:

CLASS: C1

Established/Revised: Rev. 8 (Dec. 2004 )

This standard has been revised in consequence of the following changes:

(1)a statement has been added that conformance to prohibitions and restrictions for substances of environmental concern in TSZ0001G is required. (2)terms and explanations have been changed in part.

Engineering Information Planning Dept. Prepared and Written by:

Engineering Administration Div. Organic Material Dept.

ⒸTOYOTA MOTOR CORPORATION Material Engineering Div. 2

For Limited Distribution Do Not Reproduce

TOYOTA ENGINEERING STANDARD TSM7100G CLASSC1GENERAL TEST METHOD FOR POLYURETHANE FOAMS 1. Scope This standard covers a general method for testing polyurethane foams (hereinafter referred to as \"foams\") to be used mainly for automotive seat pads and safety pads. The parts made of materials provided by this standard shall conform to prohibitions and restrictions for substances of environmental concern in TSZ0001G. Exempt uses specified by EU ELV Directive shall conform to the latest version of the Directive. 2. Classification of Test The test shall be classified as shown in Table 1, according to its purpose and characteristics. Table 1 Classification Density test Hardness test Aim Density Hardness Humidity dependence of hardness Deflection Damping characteristics Stress relaxation characteristics Strength Impact strength Item to be measured (characteristic) Apparent density 25% and 50% hardnesses 25% hardness change rate Load-deflection curve and CI-value Static spring constant, microdisplacement spring constant, and hysteresis loss Stress relaxation rate Tensile strength and elongation percentage Tear strength Impact resilience Compression set after heat resistance and humidity resistance Compression set after repeated compression and change rates of 25% and 50% hardnesses Compression set after repeated heating, cooling, and humidification cycles Change rates of tensile strength and elongation percentage Change rates of tensile strength and elongation percentage Adhesive strength Degree of staining Permeability Strength and degree of discomfort, nature of odor (pungent/fishy) Fogging rate Burning velocity Compression load test Stress relaxation test Tensile test Tear test Impact resilience test Compression set test Repeated compression test Temperature and humidity cycle test Thermal aging test Wet heat aging test Adhesive property test Staining test Permeability test Odor test Fogging test Flammability test Durability Adhesive property Staining Permeability Odor Fogging Flammability NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 1/ 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G 3. General Test Conditions 3.1 Test Room Standard Conditions The standard conditions of the test room shall be a temperature of 23 2 and relative humidity of 50 5%. If these temperature and humidity conditions are unavailable, the temperature and humidity used in the test shall be noted in the test results. 3.2 Preparation and Treatment of Test Specimens Unless otherwise specified, sample a test specimen from a relatively thick portion at the center of the product(1). Test specimens shall be sampled from products manufactured at least 24 h earlier(2). Then, before testing, leave them to stand for at least 6 h(3) in the test room maintained under the standard conditions specified in Section 3.1. Notes: (1) It is permitted to use a test mold only to prepare seat pad foam materials if the raw material is of the same composition (and the same density) as the product and foamed under the same conditions as used for the product. Sizes of test molds may be as shown in Table 2. Table 2 Mold size (mm) --- Cushion Back Thickness Thickness Width Length Width Length Standard 100 400 400 70 400 400 400 min. 400 min. Others 30, 70, 150, 180 30, 100 400 min. 400 min. (2) Inspect hourly changes in the hardness of seat pad foam materials immediately after molding to ensure that their hardness becomes stable within 24 h. Aging conditions shall be determined in consideration of annual changes in the operating environment (climatic changes between summer and winter). Instructions are specified elsewhere for seat pad foam materials that take 24 h or more for hardness to stabilize. (3) Inspect hourly changes in the hardness of seat pad foam materials immediately after placing under standard conditions to ensure that their hardness becomes stable within 6 h. Instructions are specified elsewhere for seat pad foam materials that take 6 h or more for hardness to stabilize. NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 2/ 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G 3.3 Test Specimens Shapes, sizes, and quantities of test specimens are specified in Table 3 for each test. Table 3 (6)Classification Density test Hardness test Compressive load test Stress relaxation test Tensile test Tear test Impact resilience test Compression set test Repeated compression test Temperature and humidity cycle test Thermal aging test Wet heat aging test Adhesive property test Staining test Permeability test Odor test Method A Seat (8)foam Method B Fogging test Method A Others Method B Flammability test Shape/size Skin, with/ Quantity (7)without (width length) 100 100 mm; Thickness: 30 mm or 3 min. Both 50 mm Larger than a circle 300 mm or more in (4)ILD diameter. Thickness shall be the same With skin as product. (5)100 100 mm; Thickness: 30 mm or CLD Both 2 min. 50 mm ILD With skin Same as hardness test CLD Both With skin See Fig. 1. Thickness: 10 mm Dumbbell No. 5 specified in JIS K 6251 or ISO 37; Thickness: 10 mm 4 min. See Fig. 2. Thickness: 10 mm Angular shape without notch, specified in JIS K 6252 or ISO 34-1; Thickness: 10 Both mm 100 100 mm; Thickness: 30 mm or 3 min. 50 mm 50 50 mm; Thickness: 30 mm 100 100 mm or 50 50 mm; 2 min. Thickness: 30 mm or 50 mm Same as compression set test 3 min. Without skinTensile Hardness Same as tensile test Same as hardness test 25 150 mm; Thickness: 5 to 10 mm 25 30 mm; Thickness: 13 mm 180 180 mm; Thickness: 25 mm 100 100 mm; Thickness: 20 mm 65 40 mm 4 min. 2 min. 4 min. 1 min. 3 min. 2 min. Both ----- With skin Both With skin Without skinWith skin Without skinWith skin 3 min. 50 100 mm; Same thickness as product (report) Without skinWith skin Without skinWith skin 350 100 12 mm 5 min. Solid material Compound material Solid material Compound material Solid material Compound material Solid material Compound material See Fig. 3. 80 40 mm See Fig. 3. 80 same thickness as product (report) NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 3 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G Fig. 3 (Unit: mm) Notes: (4) ILD: Indentational Load Deflection (5) CLD: Compression Load Deflection (6) Where two thicknesses are specified, use the greater one in preference to the smaller one. Note the thickness in the test results to indicate which of the two was used. (7) Skin layer conditions apply to the surface of foam material in contact with the lower mold at the time of molding. (8) Center arm rest and headrest are included. 3.4 Arrangement of Test Results Average the data obtained from the specified quantity of test specimens, and record the result. Use special formats for odor, fogging, and flammability tests. NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 4 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G 4. Test Method 4.1 Density Test Measure the width, length, and thickness of the test specimen with a scale, vernier calipers, dial gage, and the like, while taking care not to deform the test specimen. Calculate its volume. Measure its mass and calculate the density by the following equation (1). = W/V ------- (1) where, : density (g/cm3) W: specimen mass (g) V: specimen volume (cm3) 4.2 Hardness Test 4.2.1 25% and 50% Hardnesses Place the test specimen on a plate(9) that has many holes 6 mm in diameter bored at center distances of 19 mm so as to remove the air from the test specimen with ease. Depress the test specimen downward with a compression disk 200 mm in diameter, using an Instron-type compression tester equipped with an automatic recorder. To obtain ILD, use test specimens whose sizes are larger than a circle 300 mm in diameter and depress at the center of the test specimens (see Table 3). For CLD, use 100 100-mm test specimens (see Table 3) and depress all over the top surface. Apply a preload of 4.9 N to the test specimen for ILD and 1.5 N for CLD. Measure the test specimen's thickness(10) and record the result as the initial thickness. Following the above procedure, move the circular compression disk down by 75%(11) of the initial thickness at a rate of 50 mm/min. Immediately after this, return the compression disk to its initial position at the same rate of 50 mm/min. After holding the disk for 1 min at this position, move it down by 25% of the initial thickness and hold it at that position for 20 s. Read the load. Then continue to move it down to 50% of the initial thickness and hold it for 20 s. Read the load. Take the first and second results for the 25% and 50% hardnesses, respectively. Express these hardnesses in N/314 cm2 for ILD, and in N/100 cm2 for CLD. Notes: (9) The shape and dimensions of the plate is shown in Fig. 4. Use the plate, ii, shown in Fig. 4 for seat pad foam materials formed in a test mold, unless otherwise specified. (10) Measure the thickness at the center of the disk. Note the initial thickness in the test result. (11) If it is difficult to compress the disk by 75%, re-determine the compression rate through discussion among departments concerned. NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 5 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G Fig. 4 4.2.2 25% Hardness Change Rate Leave test specimens to stand in the three environments specified in Table 4 for 24 h continuously. Then, measure 25% hardnesses immediately, as specified in Section 4.2.1. Next, obtain 25% hardness percentages of the test specimens conditioned under relative humidities of 30% (condition 1), 50% (condition 2), and 70% (condition 3) using the 25% hardness determined in a 23 and 50% RH environment as the reference standard. Use the equations (2), (3), and (4) below for calculation. If it is difficult to set relative humidity to 30%, a relative humidity of 40% may be used as condition 1. 100 --- (2) (30) = (25% hardness at 30% RH)/(25% hardness at 50% RH) 100 --- (3) (50) = (25% hardness at 50% RH)/(25% hardness at 50% RH) 100 --- (4) (70) = (25% hardness at 70% RH)/(25% hardness at 50% RH) where, (30) = 25% hardness percentage in 23 and 30% RH environment (%) (50) = 25% hardness percentage in 23 and 50% RH environment (%) (70) = 25% hardness percentage in 23 and 70% RH environment (%) Further, plot a graph of 25% hardness percentages versus relative humidities at 23, obtained above, as shown in Fig. 5. Determine 25% hardness change rate from the slope of the regression line by obtaining the 25% hardness change rate per point in relative humidity at 23. If the reliability, R (RSQ), of the regression line is 0.99 or below, test results shall be discarded. If R is 0.99 or below, determine the humidty condition through actual measurement, and use the measured value for the horizontal axis of each plot. NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 6/ 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD Table 4 TSM7100G Condition 1 Condition 2 Condition 3 Temperature () 23 2 Relative humidity (%) 30 (40) 5 50 5 70 5 Fig. 5 4.3 Compression Load Test Place the test specimen on the plate provided with many small holes in the same manner as in Section 4.2.1. Apply a preload and measure the initial thickness with the 200-mm diameter disk attached to the Instron-type compression tester, as specified in Section 4.2.1. Following the procedure above, move the disk down by 75% of the initial thickness at a rate of 50 mm/min. Then, immediately, remove the load to relieve the test specimen to its initial thickness and leave to stand for 1 min. Repeat the same sequence. At the third compression, record the hysteresis loop, as shown in Fig. 6. Calculate the CI-value, static spring constant(12), and hysteresis loss using the following equations (5), (6), and (7). Compress the test specimen again as the fourth cycle, during which the load shall be lifted in a prescribed load range. Apply the load again to record a local hysteresis loop, as shown in Fig. 7 (lift the load at point b and reapply at point c). Calculate the microdisplacement spring constant(12) by the equation (8). Note (12): Plot deflections on the axis of abscissas to obtain static spring and microdisplacement spring constants, as shown in Figs. 6 and 7. NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 7/ 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G Fig. 6 Calculation of CI-value: CI = S65/S25 -------- (5) where, CI: Comfort Index S65: load required for 65% compression (N) S25: load required for 25% compression (N) Calculation of hysteresis loss: Hysteresis loss (%) = (Area of figure ABC)/(Area of figure ABD) 100 ---- (6) Reference: Calculation of static spring constant Static spring constant at compression load S' (N/cm) = Slope of approximate line drawn near point E on line AB ----- (7) Fig. 7 NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 8/ 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G Calculation of microdisplacement spring constant KSc-Sb = (Sd - Sc)/(Dd - Dc) ----- (8) where, KSc-Sb: microdisplacement spring constant in prescribed load range Sc - Sb (N/cm) Sc: load at lowest end of microdisplacement loop (N) Sd: load at highest end of microdisplacement loop (N) Dc: deflection at lowest end of microdisplacement loop (cm) Dd: deflection at highest end of microdisplacement loop (cm) 4.4 Stress Relaxation Test Place the test specimen on the plate provided with many small holes in the same manner as in Section 4.2.1. Apply a preload and measure the initial thickness with the 200-mm diameter disk attached to the Instron-type compression tester, as specified in Section 4.2.1. Following the procedure above, move the disk down by 75% of the initial thickness at a rate of 50 mm/min. Then, immediately, remove the load to relieve the test specimen to its initial thickness and leave to stand for 1 min. Apply the load again, and stop the disk when a load of 196 N has been reached. Read the load after leaving the specimen for 5 min and 1 h, and determine stress relaxation rate using the equations (9) and (10). Calculation of stress relaxation rate after 5 min 100 ---------- (9) 5 = (F0 - F5)/F0 where, 5: Stress relaxation rate (%) F0: Load at the stop of disk (N/314 cm2) (= 196 N/314 cm2) F5: Load after leaving the specimen for 5 min (= N/314 cm2) Calculation of stress relaxation rate after 1 h 100 ---------- (10) 5 = (F0 - F60)/F0 where, 5: Stress relaxation rate (%) F0: Load at the stop of disk (N/314 cm2) (= 196 N/314 cm2) F60: Load after leaving the specimen for 1 h (= N/314 cm2) NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 9/ 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G 4.5 Tensile Test Draw 40 mm distant gage marks accurately and clearly at the center of the parallel section of the test specimen. Clamp the test specimen by the chucks (chuck distance: 80 to 90 mm) of the Instron type tensile tester, taking care not to deform the test specimen. Apply tension to it at a rate of 200 mm/min until it breaks. Measure the maximum load and gage length at the time of fracture. Determine the tensile strength and elongation percentage, using the following equations (11) and (12): TB = F/(W t) ----- (11) where, TB: tensile strength (kPa) F: maximum load to fracture (N) W: width of test specimen (cm) t: thickness of test specimen (cm) EB = (I1 - I0)/I0 100 ----- (12) where, EB: elongation percentage (%) I0: gage length before test (mm) I1: gage length at breakage (mm) 4.6 Tear Test 4.6.1 Method A Clamp the test specimen by the chucks set at a distance of 40 mm using the tensile tester specified in Section 4.5. Apply tension to the test specimen at a rate of 200 mm/min until it breaks. Measure the load at the time of fracture. Determine the tear strength by the equation (13). TR = F/t ----- (13) where, TR: tear strength (N/cm) F: maximum load to fracture (N) t: thickness of test specimen (cm) NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 10 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G 4.6.2 Method B Make a 40 mm long slit in the test specimen as illustrated in Fig. 8. Clamp the test specimen by the chucks set at a distance of 40 mm with the tensile tester specified in Section 4.5. Apply tension to the test specimen at a rate of 200 mm/min until it breaks. Determine the maximum load at the time of fracture. Take this load for the tear strength (N/25 mm). Fig. 8 (Unit: mm) 4.7 Impact Resilience Test Compress the test specimen preliminarily 10 times with the palm of the hand to a depth of approximately 75% of the thickness of the test specimen. Leave it to stand for at least 1 min. Drop a steel ball(13) by gravity from an elevation of 460 mm above the test specimen. Measure the maximum vertical height of rebound. (Be sure to place the test specimen on a horizontal base.) Determine the impact resilience by the equation (14). R = D1/D0 100 ------ (14) where, R: impact resilience (%) D0: free fall distance of steel ball (mm) D1: maximum vertical height of rebound (mm) Note (13): The diameter and mass of the steel ball shall be 16 mm and 16.29 g. 4.8 Compression Set Test 4.8.1 Compression Set after Heat Resistance Compress the test specimen 10 times preliminarily with the palm of the hand to the depth of approximately 75% of its thickness. Leave it to stand for at least 1 min. Measure the thickness of the specimen accurately, as specified in Section 4.1. Compress the test specimen to 50% of its thickness using two parallel compression plates made of metal. Hold this state(14) and heat the test specimen in a thermostatic chamber controlled at 70 2 for 22 h continuously. Then, take the test specimen out of the thermostatic chamber and remove the compression plates immediately. Measure the thickness after leaving the test specimen for 30 min in an environment specified in Section 3.1(15). Determine the compression set by the following equation (15). NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 11 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G C = (t0 - t1)/t0 100 ----- (15) where, C: compression set (%) t0: initial thickness of test specimen (mm) t1: thickness of test specimen after test (mm) Notes: (14) Clearance between test specimens shall be at least 25 mm. (15) Take care to prevent condensation on the surfaces of test specimens by placing paper or rag on a wooden table. 4.8.2 Compression Set after Humidity Resistance Comply with Section 4.8.1. For this test, however, use a thermo-hygrostatic chamber controlled at a temperature of 50 2 and a relative humidity of 95 5%, in place of 70 2 thermostatic chamber. 4.9 Repeated Compression Test Measure the initial thickness of the test specimen with a scale, vernier calipers, dial gage, and the like, while taking care not to deform the test specimen. Measure the 25% and 50% CLD hardnesses of the test specimen as specified in Section 4.2.1. After the measurement, place the test specimen between the parallel flat plates of the compression tester. Compress the test specimen by 50% of its thickness 80000 times consecutively at a rate of 60 times a minute. After 80000 times of compression, remove the test specimen from the tester and leave it to stand for 30 min. Then, measure its thickness. Then, after leaving the test specimen again for 24 to 48 h, measure its 25% and 50% CLD hardnesses. Calculate the repeated compression set and the CLD hardness change rate by the following equations (16) through (18). C = (t0 - t1)/t0 100 ----- (16) where, C: repeated compression set (%) t0: initial thickness of test specimen (mm) t1: thickness of test specimen after test (mm) P25 = (H25 - 0 - H25 - 1)/H25 - 0 100 ----- (17) where, P25: 25% CLD hardness change rate (%) H25 - 0: 25% CLD hardness before test (N/100 cm2) H25 - 1: 25% CLD hardness after test (N/100 cm2) P50 = (H50 - 0 - H50 - 1)/H50 - 0 100 ----- (18) where, P50: 50% CLD hardness change rate (%) H50 - 0: 50% CLD hardness before test (N/100 cm2) H50 - 1: 50% CLD hardness after test (N/100 cm2) NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 12 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G 4.10 Temperature and Humidity Cycle Test Expose the test specimen three times to the conditions specified in Table 5. Test it as specified in Section 4.8.1. Then, determine the compression set. Table 5 Sequence 1 2 3 4 Cold chamber Thermostatic chamberRoom temperature Room temperature Condition -30 2 80 2 Time (h) 15.5 0.5 7.5 0.5 Sequence 5 6 7 8 Thermo-hygrostatic chamber Cold chamber Room temperature Condition Room temperature 50 2 -30 2 95 5%RH Time (h) 15.5 0.5 7.5 0.5 4.11 Thermal Aging Test Age the test specimen thermally in a thermostatic chamber controlled at 80 2 for 400 h. Leave it to stand at room temperature for at least 6 h. Then, conduct a tensile test, as specified in Section 4.5. Measure the tensile strength and elongation percentage. Calculate change rates of tensile strength and elongation percentage resulting from the thermal aging test, by the equations (19) and (20). CT = (T1 - T0)/T0 100 ----- (19) where, CT: change rate of tensile strength (%) T0: tensile strength before aging (kPa) T1: tensile strength after aging (kPa) CE = (E1 - E0)/E0 100 ----- (20) where, CE: elongation percentage change rate (%) E0: elongation percentage before aging (%) E1: elongation percentage after aging (%) 4.12 Wet Heat Aging Test 4.12.1 Tensile Strength and Elongation Comply with Section 4.11. For this test, however, use a thermo-hygrostatic chamber controlled at a temperature of 50 2 and a relative humidity of 95 5%, in place of 80 2 thermostatic chamber. NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 13 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G 4.12.2 Hardness Dry the test specimen in a thermostatic chamber controlled at 80 2 for 3 h. Leave it to stand at room temperature for at least 6 h. Then, measure its 25% and 50% hardnesses, as specified in Section 4.2. Next, heat and compress the test specimen for 3 h in an autoclave controlled at a temperature of 103 to 108 and vapor pressure of 7.4 to 27.4 kPa. Remove the test specimen from the autoclave. Dry it in a thermostatic chamber controlled at a temperature of 80 2 for 3 h. After leaving the test specimen to stand at room temperature for at least 6 h, measure its 25% and 50% hardnesses, as specified in Section 4.2. Indicate the results in hardness change rates, as in Section 4.9. 4.13 Adhesion Property Test Cut test specimens 10 mm in thickness, 25 mm in width, and 150 mm in length out of the product including the product skin. Peel the skin from the foam by approximately 50 mm. Separate the skin from the foam at a rate of 200 mm/min using the tensile tester specified in Section 4.5. Obtain the maximum, minimum, and mean effective loads. Indicate the adhesion strength (N/25 mm) by the average of mean effective loads. The product skin and adhesive shall be determined separately, through discussions among parties concerned. 4.14 Staining Test Insert the test specimen between two 50 50 mm plates to be stained(16), as illustrated in Fig. 9. Place a weight 500 g in mass on them and leave to stand in a thermostatic chamber controlled at a temperature of 80 2 for 72 h. Remove the plates from the thermostatic chamber. Investigate the degree of staining. Note (16): The plates to be stained are specified elsewhere as agreed upon by the parties concerned. Fig. 9 NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 14 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD TSM7100G 4.15 Permeability Test Attach the test specimen to one end of the cylinder of a permeability tester(17), as shown in Fig. 10. Adjust the suction fan with a rheostat so that the tilting type pressure gage reads 124.5 Pa Aq. Determine the air volume (mL/cm2 s) passing through the test specimen from the pressure indicated by the vertical type pressure gage and the type of the air orifice used, referring to the calculation table supplied with the tester. Note (17): It is permissable to use a different type of permeability tester. The test method and the units of the test data shall then be clearly noted. Ex.: ASTM D15-71; Unit: L/min Fig. 10 4.16 Odor Test Comply with TSM0505G. However, the temperature shall be 80. 4.17 Fogging Test Comply with TSM0503G. For this test, however, the temperature shall be 80 and the time shall be 20 h for solid materials and 72 h for compound materials. 4.18 Flammability Test Comply with TSM0500G. NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 15 / 16

For Limited Distribution Do Not Reproduce TOYOTA ENGINEERING STANDARD Applicable Standards TSM0500G TSM0503G TSM0505G TSZ0001G ISO 34-1 ISO 37 JIS K 6251 JIS K 6252 TSM7100G Flammability Test Method for Interior Non-Metallic Materials Fogging Test Method for Non-Metallic Materials Test Method for Smell of Non-Metallic Materials Control Method for Substances of Environmental Concern Rubber, Vulcanized or Thermoplastic -- Determination of Tear Strength -- Part 1: Trouser, Angle and Crescent Test Pieces Rubber, Vulcanized or Thermoplastic -- Determination of Tensile Stress-Strain Properties Rubber, Vulcanized or Thermoplastic -- Determination of Tensile Stress-Strain Properties Rubber, Vulcanized or Thermoplastics -- Determination of Tear Strength NOTES: The recipient of this standard shall undertake the following confidentiality obligations upon the receipt of this standard. - The recipient shall discard by shredding or fire, or return to Toyota Motor Corporation if appropriate, the documents contained in this standard when they are no longer necessary due to the termination of the work concerned or the revision of current version of this standard, - This standard and the technical information related thereto are owned by and under sole control of Toyota Motor Corporation. They shall not be disclosed in whole nor in part to ant third party without prior written consent of Toyota Motor Corporation.. Rev. 8 Dec. 2004 16 / 16