GMNA-GMP.TECEA.001-2005.pdf
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1、 ENGINEERING STANDARDS Material Specification Plastics GMP.TECEA.001 Thermoplastic Elastomer - Chlorinated Ethylene Alloy, Shore A60, Interior/Exterior Copyright 2005 General Motors Corporation All Rights Reserved November 2005 Originating Department: North American Engineering Standards Page 1 of 3
2、 1 Scope This specification covers the properties of a black, UV and heat stabilized, chlorinated ethylene thermoplastic elastomer alloy. The material can be processed by extrusion or injection molding. 1.1 Typical Application. Typical applications include the following: outer belt strip, reveal mol
3、ding, window lace strip. Continuous 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 1431-1 ISO 527 SAE J1885 ISO 812 SAE J1960 ISO 815 SAE J1976 ISO 868 SAE
4、J2236 ISO 1183 2.2 GM Standards/Specifications. GM1002M GMW3001 GM9305P GMW3059 GM9328P GMW3221 3 Requirements 3.1 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the material are summarized in charts. The color shall be specified on drawings, in mat
5、erial specifications and otherwise. 3.2 Requirements On Test Specimens. 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 handli
6、ng the materials required by this specification. Tests 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 specimen perpendicular to the direction of flow. Plaque dimensions mus
7、t meet sufficient to permit this. Tests shall be conducted 40 h minimum 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 belo
8、w or above 22 3C shall be conducted at the specified temperature using specimens conditioned at the specified temperature for 4 h minimum. The minimum values specified in the property tables must be met by test specimens in natural, black, or in a standard sampled color if natural or black are not a
9、vailable. For colored grades where other pigment and additive systems (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 materi
10、als supplied to this specification must comply with the requirements of 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 S
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