GMNA-9985918-2003.pdf
《GMNA-9985918-2003.pdf》由会员分享,可在线阅读,更多相关《GMNA-9985918-2003.pdf(3页珍藏版)》请在三一文库上搜索。
1、 ENGINEERING STANDARDS Material Specification Adhesives 9985918 Adhesive, One-Part, Antiflutter High Expansion, Low Strength 1 Scope This specification covers a pumpable one-part adhesive suitable for bonding exterior automo- tive body panels for stiffening, and/or, antiflutter applications; ie. Roo
2、f Panel to Roof Rail or Roof Bow Panel. Note: Adhesive materials approved to this specification must also be tested and approved to the 9984273 Sealer specification. This re- quirement is to allow for greater capacity and flexibility in regard to Body Shop dispensing robot utilization. 1.1 Material
3、Description. This material shall be compatible with production phosphatizing, ELPO, and topcoat systems, and shall not be adversely affected by bake temperatures up to 195C (385F). 1.2 Remarks. This material will expand and cure in the heat of the ELPO oven. The resulting bond provided by the curing
4、 reaction in the oven shall provide an adhesive strength, within the material to the substrate (oily CRS or galva- nized), that is greater than the materials cohe- sive strength. 1.2.1 This system must be capable of being dispensed with current production equipment. It shall be compatible with produ
5、ction systems. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D570 ASTM D4339 ASTM D638 ASTM E502 ASTM D1056 SAE J243 ASTM D1875 SAE J1524 ASTM D2240 SAE J1864 2.2 GM Standards/Specifications. 9984273 GM976
6、4P GM3640M GM9828P GM9010P GMW3001 GM9037P GMW3059 GM9763P 3 Requirements 3.1 Toxicity. The toxicity shall be disclosed in kind and magnitude, as required, by the GM Material Safety Data Sheet. In addition, the material must have full approval of the appropriate medical department prior to productio
7、n use. 3.2 Stability, GM9763P. Material conditioned using potential storage conditions must be ca- pable of passing all the requirements of this specification. 3.2.1 Elevated Temperature Stability. As shipped, the adhesive must be capable of with- standing a temperature of 55C for 72 h, without sepa
8、ration or caking. 3.2.2 Low Temperature Stability. As shipped, the adhesive must be capable of withstanding three cycles of the applicable cycle schedule outlined in A2 of GM9763P. 3.2.3 Storage Stability. The shelf life of the adhesive in closed containers shall be 90 days at a temperature not to e
9、xceed 35C. Shelf life of the material commences upon the receipt of the material from the manufacturer. 3.2.4 Pressure Stability, SAE J1864. As shipped, the adhesive must not separate or cake. 3.3 Nonsmoking, GM9828P. The adhesive shall not smoke up to 177C and shall not be classified greater than a
10、 slight smoker at 191C. 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 Provided by IHS under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS
11、 Not for Resale, 06/23/2008 22:56:29 MDTNo reproduction or networking permitted without license from IHS -,-,- 9985918 GM ENGINEERING STANDARDS 3.4 Material Properties Uncured Adhesive. See table 1. Table 1: Material Properties Uncured Adhesive Properties Values Test Methods Color Off-white Visual O
12、dor The material shall not have a noxious odor in either cured or uncured condition. ASTM D4339 Sag Resistance No sag or slide at RT or during bake. SAE J243, ADS-10, C VOC 205C (400F) ASTM E502 Homogeneity Material must be homoge- neous and free of lumps or air bubbles. Volume Expansion 525 75% GM9
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- GMNA 9985918 2003
链接地址:https://www.31doc.com/p-3764986.html