1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 05 02 N-STATUS Replaced by WSS-M99P32-B A. Reaume 2004 09 20 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.6, 3.7 & 4 deleted 1989 09 27 Released NBIDE10016757002 D. Henrickson, B. Ferns, L. Moriarty Printed copies are uncontrolled Cop
2、yright 2006, Ford Global Technologies, LLC Page 1 of 3 POLYURETHANE (PUR) FOAM, ACOUSTICAL, 64 kg/m3WSB-M2D409-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a polyether urethane foam cast to the desired configuration. 2. APPLICATION This specification was rel
3、eased originally for material used as molded in place sound insulators for molded barrier-backed carpet assemblies for the 1990 Lincoln. The foam shall not be used in direct contact with metal temperatures exceeding 120 C. Metal contact temperatures or exposure temperatures that exceed 120 C shall e
4、mploy sufficient insulation to insure that the foam is exposed to less than 120 C. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the C
5、ompanys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 APPEARANCE The cell structure of finished parts shall be free from large voids, unblown compound or hard spots. 3.5 TEST SPECIMEN The following material properties shall be determined on specimens taken from molded finished
6、 parts, unless otherwise specified. The specimen shall be free of voids, hard spots, and densification lines. 3.5.1 Density, +/- 10% 64 kg/m3(ISO 845/ASTM D 3574, Test A, section density, skin included) 3.5.2 Tensile Strength, min 85 kPa (ISO 1798/ASTM D 3574, Test E, 50 mm bench marks, 5 specimens
7、minimum, skin on one side only) 3.5.2.1 Elongation at Break, min 95% (Test acc. to para. 3.5.2) ENGINEERING MATERIAL SPECIFICATIONWSB-M2D409-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 2 of 3 3.5.3 Tear Strength, min 0.22 N/mm (ISO DIS 8067/ASTM D 3574, Test F
8、, 50 mm/min test speed) 3.5.4 Compression Set, max 58% (ISO 1856, Method A/ASTM D 3574, Test D, 22 h at 70 C, 50% deflection, Ct calculation, 3 specimens minimum) 3.5.5 Compression Deflection Stress 3.5 kPa +/- 15% (ISO 3386/1 at 40% compression, 50 x 50 x 25 mm specimen size, 100 +/- 20 mm/min test
9、 speed, 3 specimens minimum) 3.5.6 Heat Aging (ISO 2440/ASTM D 3574, Test K, 48 h at 120 +/- 2 C) 3.5.6.1 Tensile Strength Change, max +/- 15% (Test acc. to para 3.5.2) 3.5.6.2 Elongation at Break Change, max +/- 20% (Test acc. to para 3.5.2) 3.5.7 Humidity Aging (AUTOCLAVE) (ISO 2440/ASTM 3574, Tes
10、t J, Sample per Test E, 10 h at 120 +/- 2 C, two 5 h cycles) 3.5.7.1 Tensile Strength Change, max -20% (Test acc. to para. 3.5.2) 3.5.7.2 Elongation at Break Change, max -15% (Test acc. to para. 3.5.2) 3.5.8 Ash Content, max 4% (ISO 247, Method B/ASTM D 1278, 925 +/- 25 C) 3.5.9 Odor, max Rating 2 (
11、FLTM BO 131-01/SAE J1351) 3.5.10 Aged Weight Loss, max 1.5% Test Method: Weigh 100 x 100 x 25 mm sample to nearest mg (W1). Place the sample in a convection oven maintained at 120 +/- 2 C for 24 h. Remove sample and reweigh to the nearest mg (W2). (W1 - W2) x 100 % Weight Loss = - W1 ENGINEERING MAT
12、ERIAL SPECIFICATIONWSB-M2D409-APrinted copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 3 3.5.11 Durability (NAAO ONLY) (FLTM BO 012-04, Method A, except use 27 kg and no load deflection readings, required for initial approval only) 3.5.11.1 Original 3,000 cycles 3.5.1
13、1.2 Aged 100 h at 120 +/- 2 C 1,000 cycles There shall be no evidence of excessive crumbling or deterioration, e.g., physical separation resulting in dislodged sections or internal cohesive separation. 3.5.12 Fogging (FLTM BO 116-03) Fog Number, min 60 Formation of amines, oily film or droplets is cause for rejection. 3.5.13 Sound Absorption, min (ASTM C 384, skin towards source, 25 mm thick sample) Initial Approval Only Frequency (Hz) Absorption Coef. 250 15 500 75 1000 70 2000 55 3.5.14 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute
