1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 13 N-STATUS No Replacement Named C. Mracna, NA 2004 07 19 Revised Format Updated 1999 12 09 Activated G. Alent Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 2 POLYURETHANE FOAM, OPEN CELL, RETI
2、CULATED WSS-M2D224-B1 NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a completely open cell, reticulated polyurethane foam with a 97% void-volume relationship. 2. APPLICATION This specification was released originally for material used where a completely open ce
3、ll construction is needed, such as a filter in the fuel vapor storage dust box. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). Part producers using
4、this material in their products, must use Ford approved materials and must conform to a process control plan which has been approved by STA and/or the relevant Materials Activity. 3.2 DENSITY, kg/m325.6 - 32 (ISO 845/ASTM D 3574, Test A) 3.3 TENSILE STRENGTH, kPa min 140 (ISO 1798/ASTM D 3574, Test
5、E, 50 mm bench marks, (ISO 1798/ASTM D 3574 Test E 50 mm bench marks, 5 specimens min.) 3.4 ELONGATION AT BREAK, % min 175 (Test according to para 3.3) 3.5 TEAR RESISTANCE, N/m min 410 (ISO DIS 8067/ASTM D 3574, Test F, 50 mm/min test) 3.6 COMPRESSION SET, % max 10 (ISO 1856, Method A/ASTM D 3574, T
6、est D, 22 h at 70 C, 50% deflection Ct calculation, 3 specimens min) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D224-B1Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 2 3.7 HEAT AGING (ISO 2440/ASTM D 3574, Test K, 22 h at 140 +/- 2 C) Tensile Strength Change, %
7、max -40 (Test according to para 3.3) 3.8 COLD FLEXIBILITY AT -40 C No cracking Test Method: Condition 3 specimens 12.7 x 50 x 200 mm for 5 to 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. 3.9 C
8、OMPRESSION DEFLECTION STRESS (ISO 3386/1, 100 x 100 x 50 mm specimen size, 100 +/- 20 mm/min test speed, 3 specimens min) At 25% Compression, kPa min 2.7 At 65% Compression, kPa min 6.2 3.10 CELL STRUCTURE 30 - 36 (cells/linear 10 mm or as specified by engineer on the engineering drawing.) Homogeneo
9、us, open fine cell structure with no large voids or solids spots. It shall be free from internal defects, such as cold shuts, folds, laps and tears. It must be 100% open cell. 3.11 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.
