1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 25 N-STATUS No replacement named C. Mracna, NA 2004 09 16 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.7, 3.8 & 4 deleted 1989 04 07 Released SM/EQ15817TP K. Gerhards Printed copies are uncontrolled Copyright 2010, Ford Global Tech
2、nologies, LLC Page 1 of 3 POLYURETHANE (PUR) FOAM, SEMI RIGID WSK-M2D396-A NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a slab stock, semi-rigid polyester polyurethane foam. The material contains flame retardant additives. 2. APPLICATION This specification was
3、 released originally for material used as padding insert in sunvisors. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 APPEARANCE The foam shall
4、have a homogeneous medium sized cell structure with no large voids or cracks which may impair the serviceability of the part. 3.5 TEST SPECIMEN 3.5.1 Density, min 25 kg/m3(ISO 845/ASTM D 3574, Test A) 3.5.2 Tensile Strength, min 140 MPa (ISO 1798/ASTM D 3574, Test E, 5 specimens minimum) 3.5.2.1 Elo
5、ngation, min 40% (Test acc. to para 3.5.2) 3.5.3 Tear Strength, min 300 N/m (ISO DIS 8067/ASTM D 3574, Test F, 50 mm/minute test speed) 3.5.4 Compression Deflection Stress 45 +/- 10 kPa (ISO 3386/1 at 40% compression, 100 x 100 x 50 mm, specimen size, 100 +/- 20 mm/minute test speed, 3 specimens min
6、imum, except record and evaluate the first compression. No preflexing required) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D396-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 3 3.5.5 Recovery, min 95% Test Method: As in para 3.5.4 the test specimen shall be com
7、pressed to 40% of its original thickness, then immediately after reaching this compression, it shall be released. After a recovery period of 3 h, specimen thickness shall be remeasured. Recovery shall be calculated as follows: Tf Recovery % = - x 100% To Where: Tf = final thickness To = original thi
8、ckness 3.5.6 Heat Aging (ISO 2440/ASTM D 3574, Test K, 22 h at 140 +/- 2 C) 3.5.6.1 Tensile Strength Change, max +/- 30% (Test according to para 3.5.2) 3.5.6.2 Elongation at Break Change, max +/- 40% (Test according to para 3.5.2.1) 3.5.7 Humidity Aging (AUTOCLAVE) (ISO 2440/ASTM 3574, Test J, 100 x
9、 100 x 50 mm specimen, 3 h at 105 C) 3.5.7.1 Tensile Strength Change, max +/- 20% (Test according to para 3.5.2) 3.5.7.2 Elongation at Break Change, max +/- 20% (Test according to para 3.5.2.1) 3.5.8 Cold Flexibility at -30 C No cracks (FLTM BN 102-01, except use 150 x 50 x 10 mm specimen, 10 mm dia
10、meter mandrel) 3.5.9 Staining None Test Method: Cover an approx. 100 x 100 x 10 mm foam specimen (with surface skin on one side) with a section of light colored standard vinyl (FLTM BN 103-01). Expose assemblies (surface skin of foam facing light source) for 150 h in the Fluorescent Sunlamp Cabinet
11、(equipment as specified in FLTM BO 115-01). Control specimens of vinyl should also be exposed. Evaluate the standard material after cooling to room temperature. 3.5.10 Fogging (FLTM BO 116-03) Fog Number, min 70 3.5.11 Odor, max Rating 2 (FLTM BO 131-01/SAE J1351) ENGINEERING MATERIAL SPECIFICATIONWSK-M2D396-APrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 3 3.6 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 10 +/- 0.8 mm.
