GMW GMW16490-2011 Polyolefin Alloy - Weather Resistant 275 MPa Flexural Modulus Injection Molding Grade Issue 1 English《耐候275 MPa挠曲模量的喷射模塑等级聚烯烃合金 第1次出版(英文版本)》.pdf
《GMW GMW16490-2011 Polyolefin Alloy - Weather Resistant 275 MPa Flexural Modulus Injection Molding Grade Issue 1 English《耐候275 MPa挠曲模量的喷射模塑等级聚烯烃合金 第1次出版(英文版本)》.pdf》由会员分享,可在线阅读,更多相关《GMW GMW16490-2011 Polyolefin Alloy - Weather Resistant 275 MPa Flexural Modulus Injection Molding Grade Issue 1 English《耐候275 MPa挠曲模量的喷射模塑等级聚烯烃合金 第1次出版(英文版本)》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16490 Polyolefin Alloy - Weather Resistant, 275 MPa Flexural Modulus, Injection Molding Grade Copyright 2011 General Motors Company All Rights Reserved December 2011 Originating Department: North American Engineering Standards Page 1 of 4 1
2、Scope 1.1 Material Description. This specification covers the properties of integrally colored, weather resistant, 275 MPa nominal flexural modulus polyolefin alloy, pellet form, injection molding compound. For the purpose of this specification, polyolefin alloy is defined as an alloy of polypropyle
3、ne plastic and Ethylene Propylene (EP) or Ethylene Propylene Diene Monomer (EPDM) rubber. 1.1.1 Additional Characteristics. Materials certified to this material specification may have additional characteristics, e.g., paintable, elastomer modified, etc. Possible additional characteristics are define
4、d in GMW3013. 1.2 Symbols. The material abbreviation according to ISO 11469 is PP+EPDM-M10 All failures must be ductile Multiaxial Impact Strength at -30 2 C ASTM D3763, specimen C, 2.2 m/s impact velocity J at maximum load 15 All failures must be ductile Multiaxial Impact Strength at 23 5 C ISO 660
5、3-2/40/20/C/4.4. Sample to be either square 60 mm x 60 mm minimum, or circle 60 mm diameter minimum. Sample thickness to be 2 mm 0.1 mm. J at maximum load Report Energy at Maximum Force and Type of Failure Multiaxial Impact Strength at -30 3 C (or lowest temp. where only type YD or YS failures are o
6、bserved) ISO 6603-2/40/20/C/4.4. Sample to be either square 60 mm x 60 mm minimum, or circle 60 mm diameter minimum. Sample thickness to be 2 mm 0.1 mm. J at maximum load Report Energy at Maximum Force and Type of Failure; Report Test Temp. Weather Resistance Note 1 Color Change Surface Defects 5 ye
7、ars exposure to direct weather in Florida per SAE J1976 Procedure A. Measure color as defined in Note 2. Correlation of 5 years Natural Weathering to Accelerated Weather Resistance is required. E 3.0 maximum No objectionable defects allowed. Accelerated Weather Resistance Note 1 Color Change Surface
8、 Defects SAE J2527-A, Extended UV Filters, 4500 kJ/m2 exposure to exterior Xenon arc Weatherometer (GMW14650 Weatherometer Resistance Class 1) Measure color as defined in Note 2. E 3.0 maximum No objectionable defects allowed. Note 1: In case of conflict between accelerated weathering and natural we
9、athering, natural weathering results take precedence. Note 2: For integrally colored compounds, the color of each test specimen shall be measured per SAE J1545, CIELAB color space, 10 observer, illuminant D65, specular included, sphere geometry, before and after exposures. In case of conflict betwee
10、n accelerated and natural weathering, natural weathering takes precedent. Prior to making measurements and observations on weathered specimens, wash the specimens with a solution consisting of 2 g No. 7 Car Wash Concentrate (distributed by Armor All Products, Aliso Viejo, CA 92656) and 1 L deionized
11、 water 22 3 C. Use a soft sponge saturated with the solution and scrub the samples with a firm action. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendations valid in the country of usage. 5.2 Language. In the event of confli
12、ct between the English and domestic language, the English language shall take precedence. 5.3 Inspection and Rejection. Samples of components or materials released to a GM material specification shall be tested for conformity with the requirements of this material specification and approved by the r
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