1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 12 07 Revised Updated format; Inserted 4. 2003 06 04 Activated B Hennessey Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 3 THERMOPLASTIC ELASTOMER (TES + TPU) STYRENE BLOCK WSS-M2D506-A COPOLYMER
2、65 DUROMETER A HARDNESS, INTERIOR 1. SCOPE This material defined by this specification is colored and U.V. stabilized thermoplastic elastomers based on Styrene block copolymers (TES) blended with Thermoplastic Polyurethane (TPU) for interior use of nominal instantaneous Durometer. A hardness 65 havi
3、ng good long term resistance to heat at temperatures up to 100 C. This material can be considered as a lower cost alternative to TPV materials. 2. APPLICATION The specification was released originally for materials used for general interior components which are black or color keyed such as seals, be
4、zels, gaskets, edge strips, etc. but excluding air bag covers. 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 produce
5、rs must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 DYNAMIC MECHANICAL ANALYSIS (ASTM D 4065) Ford Motor Company, at its option, may establish shear modulus/damping vs. temperature curves plotted for -50 to +170 C temperature range for material/parts
6、supplied to this specification. The shear modulus and damping curves established for initial approval shall constitute the reference standard and shall be kept on file at the designated material laboratory. All samples shall produce shear modulus and damping curves that correspond to the reference s
7、tandard when tested under the same conditions. 3.3 PREPARATION OF TEST SPECIMENS Unless otherwise specified, all tests shall be conducted on specimens die cut from injection molded plaques 150 x 100 x 2.0 +/- 0.2 mm. The plaques shall be molded according to ISO 294 and film gated along the upper 100
8、 mm edge, and preceded by a 0.8 mm diameter pin gate. No annealing allowed, unless specified otherwise. 3.4 FINISHED PART REQUIREMENTS The finished part must conform with the requirements of the performance specification WSS-M15P4-E and/or the relevant System Design Specifications (SDS). ENGINEERING
9、 MATERIAL SPECIFICATIONWSS-M2D506-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 3 3.5 DENSITY, +/- 0.05 g/cm3 0.90 (ISO 1183, Method A/ASTM D 792, Method A1) 3.6 HARDNESS, DUROMETER A 65 +/- 5 (ISO 868, after 15 sec.) 3.7 TENSILE STRENGTH, MPa, min 3.5 (ISO
10、 37 /ASTM D 412, Die C, 500 mm/min test speed. Measured Parallel to Flow) 3.7.1 Elongation at Break, % min 280 (Test per para 3.7) 3.8 MODULUS AT 100% ELONGATION, +/- 20% 2.4 (Test per para 3.7) 3.9 TEAR STRENGTH, kN/m, min (ISO 34, Method B, procedure A/ ASTM D 624, Die C) 3.9.1 Parallel to Flow 18
11、 3.9.2 Perpendicular to Flow 20 3.10 COMPRESSION SET, %, max (ISO 815, Large Type plied specimen/ASTM D 395, Method B, Type 1 plied specimen) 3.10.1 72 h at 23 +/- 1 C 21 3.10.2 24 h at 70 +/- 2 C 56 3.11 BRITTLENESS POINT, C max -30 (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.12 OZONE RESIS
12、TANCE, Rating, max 0 (FLTM BP 101-01, Method A at 20% elongation) 3.13 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1000 h at 100 +/- 2 C. Unaged property values shall be determined at the time of the aged properties determination.) 3.13.1 Hardness Change, max +10 3.13.2 Tensile Strength
13、 Change, % max +40 3.13.3 Elongation Change, % max +40 ENGINEERING MATERIAL SPECIFICATIONWSS-M2D506-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 3 of 3 3.14 FOGGING (SAE J1756, 3 h at 100 C heating, 21 C cooling plate, post test conditioning 1 h and 16 h) Fog N
14、umber, min 80 Formation of clear film, droplets or crystals is cause for rejection. 3.15 ODOR, max (SAE J1351/FLTM BO 131-01) Rating 2 3.16 FLAMMABILITY (ISO 3795/FMVSS 302) Burn Rate, max 100 mm/minute The specimen size required for material approval is 355 x 100 x 2.0 +/- 0.1 mm with a smooth surf
15、ace. 3.17 WEATHERING RESISTANCE After exposure in accordance with 3.17.1 and 3.17.2 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 cracking, crazing or other deterioratio
16、n. A slight loss of gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing with mild detergents and water (ratio 5:95 by volume). All initial approvals will be based on the preliminary Weatherometer exposure, pending Florida exposure results for final approval
17、. 3.17.1 Xenon Arc Weatherometer Rating 4 (SAE J1885, 488.8 kJ/m2exposure minimum, specimen size: 150 x 100 mm minimum, 2.0 +/- 0.2 mm thick, molded in smooth polished mold) 3.17.2 12 months Florida Rating 4 (FLTM BI 160-01, 5 south, under glass specimen size: 150 x 100 mm minimum 2.0 +/- 2.0 mm thick molded in smooth polished mold) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 RECYCLING CODE TES+TPU
