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1、 ENGINEERING STANDARDS Material Specification Plastics GMP.PPE.014 Polyphenylene Ether - Expandable Copolymer Foam - General Purpose 1 Scope This specification covers the properties of a general purpose, natural or black, modified poly- phenylene ether expandable copolymer foam. 1.1 Paintability. Ap
2、proved paint systems that can be used on this material are listed in the GM Approved Paint on Plastic Systems (GM APOPS) database. 1.2 Typical Applications. Typical applications include the following: bumper fascia supports. 2 References Note: Only the latest approved standards are applicable unless
3、 otherwise specified. 2.1 External Standards/Specifications. ASTM C203 ASTM D3030 ASTM C447 ASTM E203 ASTM D1621 2.2 GM Standards/Specifications. GM9311P GMW3059 GMW3001 3 Requirements 3.1 Requirements On Test Specimens. Tests shall be conducted using the latest issue of the test methods indicated.
4、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. Test specimens for the mechanical properties shall be saw cut from molded plaques. Tests shall be cond
5、ucted 40 h min after molding and immediately following a conditioning period of 24 h minimum at 22 3C and 50 5% RH unless otherwise specified. All test- ing shall be done on unannealed samples. Tests made on expanded beads, (i.e., particle size distribution, water content, and pentane content, shall
6、 be conducted 24 h minimum after manufacture of the beads and/or anytime after the molder receives the beads. Copyright 2003 General Motors Corporation All Rights Reserved December 2003 Originating Department: North American Engineering Standards Page 1 of 3 Copyright General Motors North America Pr
7、ovided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 23:28:47 MDTNo reproduction or networking permitted without license from IHS -,-,- GMP.PPE.014 GM ENGINEERING STANDARDS Copyright 2003 General Motors Corporation All Rights Reserved Page
8、 2 of 3 December 2003 3.1.1 Compound Properties. See table 1. Table 1: Compound Properties (Natural and Black) Properties Test Values Test Methods Particle Size Distribu- tion (by weight) US Sieve 16- 15.0% max US Sieve 20- 100% max US Sieve 30- 100% max US Sieve 40 - 2.0% max Pan - 1.0% max GM9311P
9、 Water Content (by weight) 1.0% max ASTM E203 Pentane Content 5 7% Total volatiles (ASTM D3030) minus water Content (ASTM E203) Flexural Strength 1.5 MPa min ASTM C203, 254 mm Support span, 305 x 76 x 25 mm, 13 mm/minute, 96 kg/m3 Compressive Strength 0.7 MPa min ASTM D1621 at 10% strain, 51 x 51 x
10、25 mm, 13 mm/minute, 96 kg/m3 Maximum Use Tem- perature 101C max ASTM C447, 51 x 51 x 25 mm, 13 mm/minute, 96 kg/m3 3.1.2 Suggested Compound Verification. Inherent compound properties and test proce- dures that may be used to identify this material are listed below. The test value and test proce- du
11、re requirements are identical to those listed in Section 3 Compound Properties. Particle Size Distribution Pentane Content Water Content 3.2 Performance Requirements. Performance requirements e.g., flammability, fogging or resis- tance to odor shall be specified on part drawings or in component spec
12、ifications. 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 Mate- rial Specifications. 5.2 All materials supplied to this specification must comply with the requir
13、ements of GMW3059, Restricted and Reportable Sub- stances for Parts. 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 23:28:47 MDTNo reproduction or networking permitted without license from IHS
14、 -,-,- GM ENGINEERING STANDARDS GMP.PPE.014 6 Approved Sources Engineering qualification of 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 quali- fied by engineering as meeting the requiremen
15、ts of this specification. 7 Coding System This material specification shall be referenced in other documents, drawings, VTS, CTS, etc. as follows: Copyright 2003 General Motors Corporation All Rights Reserved GMP.PPE.014 8 Release and Revisions 8.1 Release. This standard was originated by the Plasti
16、cs Committee in September 1990. 8.2 Revisions. Rev. Approval Date Description (Organization) A JUL 2003Inactive (GMNA Foam- Miscellaneous) B OCT 2003Reactivated and reformatted (GMNA Foam- Miscellaneous) Page 3 of 3 December 2003 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 23:28:47 MDTNo reproduction or networking permitted without license from IHS -,-,-