1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2016 08 31 A2 N Status No usage or replacement L. Sinclair, NA 2010 03 16 A2 RE-ACTIVATED Part of PCV system Design Rule Source added A. Reaume, NA 1998 06 01 Activated L. Hess Copyright 2016, Ford Global Technologies, LLC Page 1 of 2 POLYURE
2、THANE FOAM, OPEN CELL - RETICULATED, WSS-M2D498-A1 13 CELLS/10 MM NOT TO BE USED FOR NEW DESIGN POLYURETHANE FOAM, OPEN CELL - RETICULATED, WSS-M2D498-A2 18 CELLS/10 MM NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by these specifications is a completely open cell, reticulated polyuret
3、hane foam with a 97% void-volume relationship. 2. APPLICATION These specifications were released originally for material used where a completely open cell construction is needed, such as a filter in the fuel vapor storage dust box. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS M
4、aterial suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). A1 A2 3.4 DENSITY, kg/m3 31.6 - 35.5 26.5 - 30.9 (ISO 845/ASTM D 3574, Test A) 3.5 TENSILE STRENGTH, kPa, min 122 117 (ASTM D 3574, Test E) 3.6 ELONGATION AT BREAK, %, m
5、in 219 290 (Test according to para 3.2) 3.7 TEAR RESISTANCE, N/m, min 817 617 (ASTM D 3574, Test F) 3.8 COMPRESSION SET, %, max 25 18 (ISO 1856, Method A/ASTM D 3574, Test D, 22 h at 70 C, 50% deflection Ct calculation, 3 specimens min) 3.9 HEAT AGING (ISO 2440/ASTM D 3574, Test K, 22 h at 140 +/- 2
6、 C) Tensile Strength Change, %, max 40 30 (Test according to para 3.2) ENGINEERING MATERIAL SPECIFICATION WSS-M2D498-A1/A2 Copyright 2016, Ford Global Technologies, LLC Page 2 of 2 A1 A2 3.10 COLD FLEXIBILITY AT -40 C No cracking No cracking Test Method: Condition 3 specimens 12.7 x 50 x 200 mm for
7、5 - 6 h in a cold chamber maintained at -40 C. Without removing from chamber, bend the specimen 180 over a temperature conditioned 12.7 mm diameter mandrel. 3.11 COMPRESSION DEFLECTION STRESS (ISO 3386/1, 100 x 100 x 50 mm specimen size, 100 +/- 20 mm/minute test speed, 3 specimens min) At 25% Compr
8、ession, kPa, min 2.3 0.95 At 65% Compression, kPa, min 3.7 3.1 3.12 CELL STRUCTURE 9.8 - 13.8 14.8 18.8 (Cells/linear 10 mm or as specified on the engineering drawing.) The cell structure must be homogeneous, with no large voids or solid spots. It shall be free from internal defects, such as cold sh
9、uts, folds, laps and tears. It must be 100% open cell. 3.13 OZONE RATING 0 0 (FLTM BP 101-01) 3.14 CHEMICAL RESISTANCE No surface tackiness or evidence of foam deterioration Test Method: Immerse 50 x 25 x 3.2 mm foam specimens in Fuel B for 22 h at room temperature. 3.15 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute 100 mm/minute
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