1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2009 08 26 N-STATUS No known use. No Replacement Named C. Mracna, NA 2004 12 16 Revised Inserted 3.0; Deleted 3.1 2003 07 18 Activated M. Masserant Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 1 of 3 THERM
2、OPLASTIC ELASTOMER (TEO) POLYOLEFIN, EPDM WSS-M2D381-A4 RUBBER MODIFIED, INTERIOR NOT TO BE USED FOR NEW DESIGN 1. SCOPE The material defined by this specification is colored and U.V. stabilized thermoplastic elastomer containing fully cured EPDM elastomer particles in a continuous polypropylene mat
3、rix. These materials possess good interior weathering capability and have excellent low fogging characteristics. 2. APPLICATION This specification was released originally for “D“ pillar side airbag curtain and general interior components that are color keyed such as cup holders, mats, and soft touch
4、 knobs. The material can be processed by conventional thermoplastics molding techniques such as injection molding, extrusion and blow molding. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements F
5、or Production Materials (WSS-M99P1111-A). 3.2 PREPARATION OF TEST SPECIMENS Test specimens shall be die cut from fan gated injection molded plaques having a nominal thickness of 2.0 +/- 0.2 mm. Die cut specimens are to be tested with the long axis of the test specimens perpendicular to the direction
6、 of flow. Plaque dimensions must be sufficient to permit this. No annealing allowed, unless specified otherwise. 3.3 DENSITY, +/- 0.04 g/cm30.92 (ISO 1183) 3.4 HARDNESS, INTERNATIONAL 85 - 95 (ISO 48) 3.5 HARDNESS, DUROMETER A 78 - 88 (ISO 868, instantaneous) 3.6 TENSILE STRENGTH, MPa, min 6.5 (ISO
7、37, Type 1, 500 mm/min test speed) 3.6.1 Elongation at Break, % min 350 (Test per para 3.6) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D381-A4 Printed copies are uncontrolled Copyright 2009, Ford Global Technologies, LLC Page 2 of 3 3.7 TENSILE STRESS AT 100% ELONGATION, min 3.0 (Test per para 3.6) 3.8
8、 TEAR STRENGTH, kN/m, min 24 (ISO 34, Method B, procedure A) 3.9 COMPRESSION SET, % max (ISO 815, Large Type plied specimen, Type A) 3.9.1 22 h at 70 +/- 1 C 55 3.9.2 70 h at 100 +/- 2 C 75 3.10 BRITTLENESS POINT, C max -56 (ISO 812, Type B specimen) 3.11 OZONE RESISTANCE, Rating max 0 (FLTM BP 101-
9、01, at 20% elongation) 3.12 HEAT AGING (ISO 188, 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C Hardness Change, Type A, pt change max +5 Tensile Strength Change, % max +/- 25 Elongation Change, % max +/- 35 3.13 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1
10、 h and 16 h) Fog Number, min 75 Formation of clear film, droplets or crystals is cause for rejection. 3.14 FLAMMABILITY (ISO 3795) Burn Rate, mm/minute max 100 3.15 ODOR (SAE J1351), Rating max Dry 3 WetENGINEERING MATERIAL SPECIFICATIONWSS-M2D381-A4 Printed copies are uncontrolled Copyright 2009, F
11、ord Global Technologies, LLC Page 3 of 3 3.16 WEATHERING RESISTANCE After exposure in accordance with 3.16.1 and 3.16.2 the material shall show no fading or color change in excess of specified AATCC rating (AATCC Gray Scale for Evaluating Change in Color, 10 Step) In addition, there shall be no crac
12、king, crazing or other deterioration when viewed with the unaided eye from a distance of 300 +/- 10 mm at 23 +/- 2 C. A slight uniform loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing with mild detergent (ratio 5:95 by volume) or equivalent after
13、 the Florida exposure. All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida results for final approval. 3.16.1 Xenon Arc Weatherometer, min. Rating 3 (AATCC Gray Scale) (SAE J1885, 1240 kJ/m2exposure) (A part, part section or surrogate part if possible, othe
14、rwise a test plaque. Plaque size: 60 x 60 min, 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen.) 3.16.2 12 Months Florida Rating 3 (AATCC Gray Scale) (FLTM BI 160-01, 5 south under PPG Herculite K, tempered safety glass, 3 mm thick. Specimen size 60 x 60 minimum 2.0 +/- 0.1 mm thick, smooth surface low gloss injection molded specimen.) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 RECYCLING CODE TEO
