1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2003 12 15 Activated B HennesseyPrinted copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 1 of 4 THERMOPLASTIC ELASTOMER, STYRENE POLYOLEFIN BLOCK WSS-M2D505-A5 COPOLYMER (TES), 90 DUROMETER A HARDNESS, EXTERIOR APPLI
2、CATIONS 1. SCOPE The material defined by this specification is a U.V. stabilized thermoplastic styrene-ethylene/butylene-styrene copolymer elastomer. The material can be processed by conventional thermoplastic molding techniques such as injection and/or extrusion molding. 2. APPLICATION The specific
3、ation was released originally for material used for roof profile skins, exterior trim seals, cowl vent grille seals and mud flaps. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Productio
4、n 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 supplied to this specification. The shear modulus and damping cur
5、ves 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 standard when tested under the same conditions. 3.3 MATERIAL TESTI
6、NG 3.3.1 Preparation of Test Specimens Whenever possible, all test specimens shall be die-cut from the finished parts. When not feasible, molded specimens are manufactured from the same material and with equivalent cure to the molded parts are recommended. The molded specimens respect the dimensions
7、 required by the specific test. ENGINEERING MATERIAL SPECIFICATIONWSS-M2D505-A5Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 2 of 4 3.4 ORIGINAL PROPERTIES 3.4.1 Density, +/- 0.05 g/cm31.13 (ISO 1183, Method A) 3.4.2 Hardness, Durometer A 90 +/- 5 (ISO 868, 15 s
8、econd dwell) 3.4.3 Tensile Strength, MPa, min (ISO 527/ 5A/ 50 mm/min) molded specimen I. Parallel to Flow 6.5 3.4.3.1 Elongation at Break, %, min (Test method according to para 3.5.3) I. Parallel to Flow 180 3.4.3.2 Modulus at 100% Elongation, MPa, min (Test method according to para 3.5.3) I. Paral
9、lel to Flow 6.0 3.4.4 Tear Strength, kN/m, min (ISO 34, molded specimen angular type) 3.4.4.1 Parallel to Flow 40 3.4.5 Brittleness Point, max - 40 C (ISO 812, Type B specimen/ ASTM D 2137, Method A) 3.4.6 Ozone Resistance, max 0 Rating (FLTM BP 101-01, Procedure A) 3.4.7 Compression Set, %, max 75
10、ISO 815, 22 h at 70 +/- 2 C) 3.4.8 Migration Staining Rating 4 minimum (FLTM BN 103-01, ISO 105-A02/ AATCC Evaluation Procedure 2) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D505-A5Printed copies are uncontrolled Copyright 2003, Ford Global Technologies, Inc. Page 3 of 4 3.5 HEAT AGING (ISO 188, 150 +
11、/- 50 air change/h, 1000 h at 125 +/- 2 C) 3.5.1 Hardness Change, +/- 5 3.5.2 Tensile Strength Change, max - 20% 3.5.3 Elongation Change, max - 20% 3.5.4 Visual Evaluation No surface tackiness or cracks when folded flat against self. 3.6 FLAMMABILITY (ISO 3795 / FMVSS 302) Burn Rate, max 100 mm/minu
12、te 3.7 WEATHERING RESISTANCE After exposure in accordance with 3.7.1, 3.7.2 and 3.7.3 the material shall show no color change in excess of specified Gray Scale rating (AATCC Evaluation Procedure 1/ ISO 105-A02). In addition, there shall be no cracking, crazing or other deterioration. A slight loss o
13、f gloss or chalking will be allowed provided an acceptable appearance can be achieved by washing and/or polishing with Ford car polish (auto wax) after the outdoor exposure, by permission of the affected Product Development Materials Activity. All initial approval will be based on the preliminary We
14、atherometer exposure, pending Florida and Arizona exposure results for final approval. 3.7.1 Xenon Arc Weatherometer Exterior Rating 4 (SAE J1960, 2500 kJ/m2exposure minimum, specimen size: 60 x 60 minimum x 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) 3.7.2 Weathering
15、Rating 4 12 months Florida 12 months Arizona Exterior (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum x 2.0 +/- 0.1 mm thick, smooth surface, low gloss injection molded specimen) ENGINEERING MATERIAL SPECIFICATIONWSS-M2D505-A5Printed copies are uncontrolled Copyright 20
16、03, Ford Global Technologies, Inc. Page 4 of 4 3.7.3 Weathering Rating 3-4 24 months Florida 24 months Arizona Exterior (SAE J1976, 5 south, direct weathering inland, specimen size: 60 x 60 minimum x 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 TES
