1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2006 04 28 N-STATUS Replaced by WSS-M99P32-B; Ins 3.0; Del 3.1, 3.2, 3.3, 3.8 & 4 A. Reaume 1996 02 16 Activated D. Whyte, B. Chen Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 1 of 4 PADDING, POLYURETHANE
2、FOAM, SLAB, KNIT FABRIC WSB-M17H93-C10 REINFORCED, MODERATE STRENGTH NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a moderate weight tricot knit fabric reinforced slab polyether polyurethane foam padding. 2. APPLICATION This specification was released originall
3、y for material used for trilamination to seating fabrics or vinyl coated fabrics. It is intended for applications where a moderate strength backing fabric is required. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.0 STANDARD REQUIREMENTS
4、 FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 FOAM REQUIREMENTS (without fabric reinforcement) 3.4.1 Density, min 29 kg/m3(ISO 845/ASTM D 3574, Test A) 3.4.2 Tensile Strength, min 83 k
5、Pa (ISO 1798/ASTM D 3574, Test E, 50 mm bench marks, 5 specimens min) 3.4.2.1 Elongation at Break, min 200% (Test according to para 3.4.2) 3.4.3 Tear Strength, min 350 N/m (ASTM D 1004, except thickness measured per ASTM D 3574) 3.4.4 Compression Set, max (ISO 1856, Method A/ASTM D 3574, Test D, Cd
6、calculation, 22 h at 70 C, 75% deflection, 3 specimens min) Normal 15% Steam Autoclave* 20% *Expose samples per ISO 2440/ASTM D 3574, Test J, Procedure J1, prior to testing for compression set. ENGINEERING MATERIAL SPECIFICATIONWSB-M17H93-C10 Printed copies are uncontrolled Copyright 2006, Ford Glob
7、al Technologies, LLC Page 2 of 4 3.4.5 Cell Structure The foam shall have a homogenous medium sized cell structure with no large voids or solid spots which may impair the serviceability of the material. 3.5 FABRIC REQUIREMENTS 3.5.1 Construction 100% polyester, tricot knit heat set 3.5.2 Fabric Coun
8、t, nominal (ASTM D 3775) Wales 105/10 cm Courses 175/10 cm 3.5.3 Weight, max 63 g/m2(FLTM BN 106-01) 3.5.4 Breaking Strength, min (ASTM D 5034, Grab Method, 305 mm/minute jaw speed, average of 5 samples, each direction) Wales 130 N Courses 300 N 3.5.5 Breaking Elongation, max (ASTM D 5034, Grab Meth
9、od) Wales 70% Courses 50% 3.5.6 Stretch and Set, max (SAE J855) Stretch, % Set, % Wales 35 12 Courses 25 8 3.5.7 Tear Strength, min (ASTM D 1117, Integration Method*, avg. of 5 samples, each direction) Wales 20 N Courses 45 N *Integration Method as approved by Materials Engineering. ENGINEERING MATE
10、RIAL SPECIFICATIONWSB-M17H93-C10 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 3 of 4 3.6 ASSEMBLY REQUIREMENTS (Foam with Sheeting) 3.6.1 Loaded Height (SAE J815, Steps 1 through 4 only, 380 x 380 mm test specimen, fabric surface down) Original Foam Thickness 22
11、2 N Under 4.4 N Preload* IRGL, Range mm mm 6.35 1.5 - 4.1 9.38 2.5 - 5.1 12.70 3.6 - 6.1 15.88 4.6 - 7.1 19.05 5.1 - 7.6 25.40 7.6 - 10.2 31.25 10.2 - 12.7 *Original thickness tolerances under 4.4 N load are +2.3/-0.3 mm. 3.6.2 Loaded Height Loss After Autoclave Aging, max 15% (SAE J815 (Steps 1 thr
12、ough 4 only), 150 x 150 x 13 mm test specimen, fabric surface down) Test Method: Measure the 222 N IRGL. Then expose sample per ISO 2440/ASTM D 3574, Test J, Procedure J1. Then conduct 222 N IRGL on aged sample and calculate % loss. 3.6.3 Compression Set, max 10% (ISO 1856, Method A/ASTM D 3574, Tes
13、t D, 7 d at 43 C, 50% deflection, Cd calculation, specimen size 100 x 100 x 25 mm, 3 specimens min) 3.6.4 Dimensional Stability (SAE J315, Method C for 1 h at 120 C*, measure after 30 minutes at 23 C and 50% relative humidity) MD +/- 2.0% AMD +/- 2.0% *Immediately prior to oven exposure, immerse spe
14、cimens in water for 1 minute and then shake off water excess. 3.6.5 Ply Adhesion (Sheeting to Foam), min 130 N/m width (ASTM D 413, Machine Method, strip specimen) 3.6.6 Flexibility No cracking or crumbling of foam Test Method: Expose samples per ISO 2440/ASTM D 3574, Test J, Procedure J1. Then bend
15、 180 around a 6.4 mm mandrel. ENGINEERING MATERIAL SPECIFICATIONWSB-M17H93-C10 Printed copies are uncontrolled Copyright 2006, Ford Global Technologies, LLC Page 4 of 4 3.6.7 Low Temperature Flexibility (FLTM BN 102-01) No evidence of cracks or failure at -34 C. 3.6.8 Fogging (SAE J1756, 3 h at 100
16、C heating, 21 C cooling plate, post test conditioning 1 h) Fog Number, min 70 Formation of clear film, droplets or crystals is cause for rejection. 3.6.9 Odor Rating 2 (FLTM BO 131-01/SAE J1351) 3.6.10 Resistance to Staining Equal to control (SAE J1885) sample Test Method: Typical light colored WSB-
17、M2F177-A or equivalent supported vinyl (PVC) trim material shall be placed in intimate contact over a 68 x 145 mm specimen of the foam/fabric material. Run a control sample of the same light colored WSB-M2F177-A material at the same time. Expose test samples for 225.6 kJ. Remove from xenon weatherometer and examine. 3.7 FLAMMABILITY (ISO 3795/SAE J369) Burn Rate, max 100 mm/minute 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RECYCLING CODE PEUR,PET
