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1、I GENERAL MOTORS ENGINEERING STANDARDS I Materials and Processes - Adhesives I ADHESIVE, TWO-PART, EPOXY, SMC REPAIR 99821 16 1 SCOPE. This specification covers the mixture of a two-part adhesive for repairing SMC. The adhesive system is comprised of a resin component (9982117) and a hardener compon
2、ent (9982118). The mixture of 9982117 and 9982118 is identified as 9982116. 1.1 This system must be capable of being metered, mixed and dispensed with current production equipment. It shall be com- patible with production systems, including paint, and cannot be adversely affecttd by paint oven tempe
3、mtuxes Itaching 204.C. 1.2 KEY WORDS: Adhesive, two-part, urethane, repair. 2 REFERENCED STANDARDS. GMlOOOM 9982117 ASTM Dl338 GM9233P 9982118 ASTM D4339 GM9828P ASTM Dl144 3 REQUIREMENTS. 3.1 TOXCITY. The adhesive must not have any adverse effects on personnel handling it. In addition, the material
4、 must have f u l l approval of the appropriate mdical department prior to production u s e . 3.2 RESTRICTED “ S (GMlOOOM). Materials approved to this specification must not contain restricted mate+ r i a l s , as identified in GMlOOOM. 3.3 MIXED ADHESIVE. Material conditioned using poten- tial stora
5、ge conditions must be capable of passing all the requirements of this specification. 3.4 MIX RATIO. The ratio of Resin to Hardener is 1.0 to 1.0 by volume (1.2 to 1.0 by weight) and shall be capable of being varied f 5% and meet all the requirements of this specifica- tion. 3.5 COLOR. The two compon
6、ents shall be in contrasting colors. The colors shall be so picked, that, in instances of improper mixing, color striations shall be visible in the dis- pensed bead. 3.6 NONSMOKING (GM9828P). The adhesive shall not smoke up to 177C and shall not be classified greater than a slight smoker at 2WC. 3.7
7、 MATERUL PROPERTIES - UNCURED ADHESIVE. See Table 1. 3.8 MATERIAL PROPERTIES - CURED ADHESIVE See Table 2. 4 ADHESIVE PROPERTIES. This material must mcct the inspection requirements in GM9233Pafter following procedun 2 of GM9233R Properties Odor Homogeneity Working Life T i m e to Handling Strength
8、Cure Time, 121C TABLE 1 not have a noxious odor in either cured or uncured condition. Matcrialmustbe homogeneous and f r e e of lumps or air bubbles. 30 minutes, min 6 h 15 minutes Test Methods ASTM D4339 ASTM D1338.AA, 23.C. dew point lOC, 10 mm dia bead ASTM D1144, 23C ASTM Dl144 Properties Bondli
9、ne Readthrough Teat Methods No unacceptable bondline 5 OTHER TESTS MAY BE REQUIRED TO VALIDATE THE SPECIFIC APPLICATION. 6 INITIAL SOURCE APPROVAL. No shipment shall be made by any supplier u n t i l a submission of mpresentative initial production samples to the purchasers labomtory and/or engineer
10、ing department has been approved as meeting the reqkments of this specification. 7 INSPECTION AND RWECTION. All shipments of material or parts under contract or purchase order manufac- tured to this specification shall be equivalent in every respect to the initial samples approved by the purchaser.
11、There shall be no changes in either formulation or manufacturing processes permitted without prior notification and approval by the pur- chaser. Lack of notification by the supplier constitutes grounds for rejection of any shipment. While samples may be taken from incoming shipments and checked for
12、conformance to this specification, the supplier shall accept the responsibility for incoming shipments meting this specification without depen- dence upon purchasers insptction. 8 APPROVED SOURCES. Engineering qualification of an approved source is required for this specification. Only sources liste
13、d i n the GM Corporate “ais File under this specification number have becn qualified by the control divi- sion as meeting the requkments of this sptcification. Sources a available through the on-line MATSPC System. NOVEMBER 1993 PAGE 1 99821 16 Copyright General Motors North America Provided by IHS
14、under license with GM Licensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 06/23/2008 21:17:22 MDTNo reproduction or networking permitted without license from IHS -,-,- I GENERAL MOTORS ENGINEERING STANDARDS Materials and Processes - Adhesives I I ADHESIVE, TWO=PART, EPOXY, SMC REPAIR
15、998211 6 9 GENERAL INFORMATION. This staudard was origi- AD Revised to new format 11/93 A include: natcd by Fisher Body i n October 1984. The latest rcvisons DiV Description Date Rev 99821 16 PAGE 2 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 21:17:22 MDTNo reproduction or networking permitted without license from IHS -,-,-
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