《GMNA-GMP.EEBC.001-2004.pdf》由会员分享，可在线阅读，更多相关《GMNA-GMP.EEBC.001-2004.pdf（3页珍藏版）》请在三一文库上搜索。
1、 ENGINEERING STANDARDS Material Specification Plastics GMP.EEBC.001 Thermoplastic Elastomer - Polyester, Shore D36, 45 MPa Flexural Modulus 1 Scope This specification covers the properties of a Shore D36, 45 MPa flexural modulus thermoplastic polyester elastomer, pellet form, injection molding and e
2、xtrusion compound. The polyester is a poly(ether ester) block copolymer. 1.1 Typical Application. Typical applications include the following: hoses, tubing, seals and jacketing for wire and cable. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 Ex
3、ternal Standards/Specifications. ASTM D789 ISO 974 ISO 34-1 ISO 1133 ISO 178 ISO 1183 ISO 306 ISO 3146 ISO 527 ISO 14910-2 ISO 868 2.2 GM Standards/Specifications. GMW3001 GMW3059 3 Requirements 3.1 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the
4、 material are summarized in charts. The color shall be specified on drawings, in material specifications and otherwise. Performance requirements, e.g. flammability, fogging or resistance to odor shall be specified on the part drawing, in the math data file, or in component specifications. 3.2 Requir
5、ements 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 handling the materials required by this specificatio
6、n. Unless otherwise specified, preparation of test specimens and standard test methods shall be in accordance with ISO 14910-2. All test values herein are based on material with a moisture content of 0.1% maximum. Immediately after molding, specimens shall be sealed in a moisture-proof container/env
7、elope. Tests shall be conducted 40 h minimum after molding and immediately following a conditioning period of 24 h minimum at 22 3C and 50% RH unless otherwise specified. All tests shall be performed on unannealed specimens. In addition, tests specified at temperatures below or above 22 3C shall be
8、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 available. For colored gra
9、des 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. Copyright 2004 General Motors Corporation All Rights Reserved Originating Department: North America Engi
10、neering Standards April 2004 Page 1 of 3 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 23:23:35 MDTNo reproduction or networking permitted without license from IHS -,-,- GM ENGINEERING STANDA
11、RD GMP.EEBC.001 Table 1: Compound Properties (Black / Natural) Property Test Method Unit Value Shore D Hardness ISO 868, instantaneous reading Shore D 30 to 45 Tensile Stress at break ISO 527, Type 1BA, 50 mm/minute MPa 20 min Elongation at Break ISO 527, Type 1BA, 50 mm/minute % 500 min Tensile Str
12、ess at 10% Elongation ISO 527, Type 1BA, 50 mm/minute MPa 2.0 min Flexural Modulus ISO 178, 50 mm span, 10 mm/minute test speed, chord modulus using 0.5 to 2.5 mm strain MPa 25 to 65 Tear Strength ISO 34-1, Method B, angle die, 50mm/minute kN/m 80 min Brittleness Temperature (not required for inflat
13、able restraint materials) ISO 974, un-notched specimens C -70 min Moisture Content ASTM D789 % 0.10 max Specific Gravity ISO 1183 1.08 to 1.14 Melt Temperature Range ISO 3146, 10C/minute C 189 to 199 Melt Flow Rate ISO 1133, 220C, 2.16 kg load g/10 minutes 7 to 10 Vicat Softening Temperature ISO 306
14、, Method A, 120C/minute C 115 to 145 Copyright 2004 General Motors Corporation All Rights Reserved April 2004 Page 2 of 3 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 23:23:35 MDTNo reproduc
15、tion or networking permitted without license from IHS -,-,- GM ENGINEERING STANDARD GMP.EEBC.001 4 Manufacturing Process Not Applicable. 5 Rules and Regulations 5.1 All materials supplied to this specification must comply with the requirements of GMW3001, Rules and Regulations for Material Specifica
16、tions. 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 qualification of an approved source is required for this specification. Only sources listed in the GM Material File (i.
17、e., MATSPC) under this specification number have been qualified by engineering as meeting the requirements of this specification. 7 Coding System This material specification shall be called up in other documents, drawings, VTS, CTS etc. as follows: GMP.EEBC.001 8 Release and Revisions 8.1 Release. T
18、his material specification was approved and first published in February 1991, by the Plastic Committee. 8.2 Revisions. Rev. Approval Date Description (Organization) A MAY 1994 Rewritten to require ISO test methods (Plastic Committee) B APR 2004 Editorial Revision (TPE Specialist) Copyright 2004 Gene
19、ral Motors Corporation All Rights Reserved April 2004 Page 3 of 3 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 23:23:35 MDTNo reproduction or networking permitted without license from IHS -,-,-