1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 06 25 N-STATUS No replacement named C. Mracna, NA 2004 10 25 Activated C. Lin Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 1 of 3 THERMOPLASTIC POLYESTER-ETHER ELASTOMER (TEEE), WSS-M2D452-A4 MOLDING
2、COMPOUND NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is a thermoplastic polyester-ether elastomer (TEEE), suitable for extrusion and compounding. 2. APPLICATION This specification was released originally for materials used for air bag cover applications that mus
3、t be painted with paints approved under WSS-M15J13-A or WSS-M15J15-A1. All paint applicators must meet the painted part approval process (AVP-T113-0116) and the soft-touch approval process (AVP-T118-017). The airbag assembly must also meet the requirements of the Airbag SDS and the Paint SDS. 3. REQ
4、UIREMENTS 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). 3.1.1 All requirements of this specification, identified by symbol (s), shall be met with data representing
5、 3 sigma values. 3.2 MOLDING COMPOUND (s) 3.2.1 Melt Flow Rate 10 - 18 g/10 minutes (ISO 1133; 240 C/2.16 kg weight) 3.3 MOLDED TEST SPECIMEN 3.3.1 Preparation of Test Specimens Unless otherwise specified, all tests shall be conducted on specimens die cut from injection molded plaques 130 x 100 x 2.
6、0 +/- 0.2 mm. The plaques shall be molded according to ISO 294 using molding conditions outlined in ISO 14910-2. Specimens with shorter dimensions shall be cut from the center portion of test specimen. No annealing allowed. (s) 3.3.2 Density 1.14 - 1.18 g/cm (ISO 1183, Method A) (s) 3.3.3 Hardness,
7、Durometer D 45 - 55 (ISO 868, 15 sec. dwell) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D452-A4 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 3 (s) 3.3.4 Tensile Stress at Break, min 30 MPa (ISO 527, Type IBA specimen, 50 mm/min test speed) 3.3.4.1 Elongation a
8、t Break, min. 525% (Test acc. to para 3.3.4) (s) 3.3.5 Flexural Modulus 290 - 470 MPa (ISO 178, 80 x 10 x 4.0 +/- 0.2mm specimen, 2 mm/min test speed, 64 mm support span) (s) 3.3.6 Tear Strength, min. (ISO 34, Method B, procedure A) 3.3.6.1 Parallel to Flow 75 kN/m 3.3.6.2 Perpendicular to Flow 65 k
9、N/m (s) 3.3.7 Brittleness Point, max. -85 C (ISO 974) 3.3.8 Heat Aging Performance (ISO 188, 1000 h at 110 +/- 2 C. After heat aging test specimens are to be conditioned in a dessicator for 3 - 5 h at 23 +/- 2 C. Unaged property values shall be determined at the time of the aged property determinati
10、on) 3.3.8.1 Tensile Strength +/- 25% at Max Load Change (Test Method per para 3.3.4) 3.3.8.2 Elongation Change, max -10% 3.4 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog Number, min 90 Formation of clear film, droplets, or crystals is cause f
11、or rejection. 3.5 FLAMMABILITY (ISO 3795) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 Long x 100 Wide. The thickness is not to exceed 2.0 mm with a smooth surface. 3.6 ODOR, Rating, Max 2 (SAE J1351) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D452-A4 Printed cop
12、ies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 3 4. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 COEFFICIENT OF LINEAR THERMAL EXPANSION (ISO 11359) 4.1.1 -40 to 23 C, Flow/
13、Trans Directions 13.0/21.0-5/C 4.1.2 23 to 55 C, Flow/Trans Directions 14.0/25.0-5/C 4.1.3 55 to 120 C, Flow/Trans Directions 10.0/22.0-5/C 4.2 MOLD SHRINKAGE (ISO 294) 4.2.1 Molding Shrinkage . After 40 h at 23 +/- 2 C 1.00 - 1.3% 4.2.2 Post Shrinkage (Separate specimens required for each test) . After 48 h at 80 +/- 2 C 0.1 - 0.3% . After 30 min at 120 +/- 2 C 0.1 - 0.2% 4.3 RECYCLING CODE TEEE
