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1、 ENGINEERING STANDARDS Material Specification Plastics GMP.TECEA.006 Thermoplastic Elastomer - Chlorinated Ethylene Alloy, Shore A70, Interior, Non-UV Stable Copyright 2006 General Motors Corporation All Rights Reserved January 2006 Originating Department: North American Engineering Standards Page 1
2、 of 2 1 Scope This specification covers the properties of a natural, non-UV stable chlorinated ethylene thermoplastic elastomer alloy. This material can be processed by extrusion and injection molding. 1.1 Typical Application. Typical applications include the following: door latch gaskets. Continuou
3、s operating temperature range: -30 to 100C. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ISO 34-1 ISO 868 ISO 527 ISO 1183 ISO 812 ISO 3451/1 ISO 815 SAE J2236 2.2 GM Standards/Specifications. GM1002M GMW3059
4、GM9305P GMW3221 GMW3001 3 Requirements 3.1 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the material are summarized in the chart. The color shall be specified on drawings, in material specifications and otherwise. 3.2 Requirements On Test Specimen
5、s. Tests shall be conducted using the latest issue of the test methods indicated. Suitable precautions should be taken to ensure that applicable safe limits are not exceeded when conducting test procedures, processes, and/or handling the materials required by this specification. Tests specimens shal
6、l 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 specimen perpendicular to the direction of flow. Plaque dimensions must be sufficient to permit this. Tests shall be conducted 40 h minimum
7、 after molding and immediately following a conditioning period of 24 h minimum per GMW3221, Code A, unless otherwise specified. All tests shall be performed on unannealed specimens. In addition, tests specified at temperatures below or above 22 3C shall be conducted at the specified temperature usin
8、g specimens conditioned at the specified temperature for 4 h minimum. The minimum values specified in the property table must be met by test specimens in natural, black, or in a standard sampled color if natural or black are not available. For colored grades where other pigment and additive systems
9、(e.g., stabilizer) are used, the impact values shall not decrease more than 10% from the specified minimum value. 3.3 Compound Properties. See Table 1. 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 All materials supplied to this specification must comply with the requirements o
10、f GMW3001, Rules and Regulations for Material Specifications and GM1002M, Standard Requirements - Plastics. 5.2 All materials supplied to this specification must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Engineering qualifications of
11、an approved source is required for this specification. Only sources listed in the GM Materials File (i.e., MATSPC) under this specification number have been qualified by engineering as meeting the requirements of this specification. Copyright General Motors North America Provided by IHS under licens
12、e with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 19:54:51 MDTNo reproduction or networking permitted without license from IHS -,-,- GMP.TECEA.006 GM ENGINEERING STANDARDS Copyright 2006 General Motors Corporation All Rights Reserved Page 2 of 2 January 2006 Tab
13、le 1: Compound Properties (Natural) Property Test Method Unit Value Shore A Hardness ISO 868, 1 second delay. Shore A61 to 75 Specific Gravity ISO 1183 1.10 to 1.25 Ash Filler ISO 3451/1, Method A % by mass 16 to 20 Tensile Stress at Break ISO 527, Type 1BA dumbbell, 500 mm/minute MPa 6.0 min Elonga
14、tion at Break ISO 527, Type 1BA dumbbell, 500 mm/minute % 200 min Tensile Stress at 100% Elongation ISO 527, Type 1BA dumbbell, 500 mm/minute MPa 2.7 min Compression Set ISO 815, Type A, 22 h at 70C % 69 max Tear Strength ISO 34-1, Method B, angle die, 500 mm/minutekN/m 30 min Low Temperature Brittl
15、eness ISO 812, Type B C -50 max Properties After Heat Aging SAE J2236, 1008 h at 100C in an air-circulating oven followed by indicated property testing at 23C. Test methods are the same as for original mechanical property testing. Change in Property No objectionable color change or tackiness Tensile
16、 Strength Elongation at Break % % 90 retention min 80 retention min Fogging Number GM9305P, Type B, 95C % 70 min 7 Notes Not applicable. 8 Coding System This material specification shall be referenced in other documents, drawings, VTS, CTS, etc. as follows: Material per GMP.TECEA.006 9 Release and R
17、evisions 9.1 Release. This standard originated in September 2005. It was first approved by TPE Specialist in January 2006. It was first published in January 2006. Copyright General Motors North America Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 19:54:51 MDTNo reproduction or networking permitted without license from IHS -,-,-