GMNA-9981560-1994.pdf
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1、E 9006377 0003337 5T7 I GENERAL MOTORS ENGINEERING STANDARDS I Materials and Processes - Adheslves I ADHESIVE, ONE-PART, MEDIUM STRENGTH 9981560 1 SCOPE. This specification covers a one-part, nonex- panding, high solids, pumpable, elastomeric adhesive. This material is intended for use as a medium s
2、trength structural adhesive for general bonding between oily CRS, galvanized, and/oralumixlum. 1.1 The material shall be capable of being dispensed through standard production q u i p m m t , provide good adhesion to all oily automotive stbe1 substrates and compatible with produc- tion phosphatizing
3、 systems, ELPO paint systems, and paint bake oven tcmpcraturts up to 1wc 1.2 KEY WORDS: Adhesive, one-part, anti-flutter, nonex- panding, high solids, and pumpable. 2 REFERENCED STANDARDS. GMlOOOM GM9828P ASTM DM18 GM3639M GM9901P ASTM D4339 GMWlOP ASTM D638 ASTM E502 GM9753P ASTM Dl 875 SAE J1524 G
4、M9763P ASTM D2240 SAE J1864 3 REQUIREMENIS. 3.1 RESTRICTED AND REPORTABLE CHEMICALS (GMloOOM). By 1997 start of saleable vehicles, all materials supplied to t h i s specification must comply with the requin- ments listed i n GMlOWM, “Restricted and Reportable chemicals.“ 3.2 T O X C X “ Y . Thc toxi
5、city shall be disclosed in kind and magnitude, as required, by the Material Safcty Data S k t . In addition, the material must have full approval of the appmpri- atc medical d e w prior t o production u s e . 3.3 SWILlTY (GM9763P). Material conditioned using potential Storage conditions must be capa
6、ble of passing all the requirements of this sptcification. 3.3.1 Elcvatad Te-rature Stability. AS shipped, the adhe- sive must be capable of withstanrtng a tcmptraturc of 55C for 72 h, without separation or caking. 3.3.2 LAW Temperatllre Stability. As shipped, the adhesive must be capable of withsta
7、nding 3 cycles of the applicable cycle schedule outlined in A2 of GM9763P. 3.3.3 Storage Stability. The shelf life of the adhesive in closed containers shall be 60 days a t a temperatme not to exceed 35C. Shelf life of the material commcncts upon thc receipt of the material from the manufacturer. 3.
8、4 PRESSURE STABILITY (SAE J1864). As shipped, the adhesive must not scparak or c a k e . 3.5 NONSMOKING (GM9828P). The adhesive shall not smoke up to 17772 and shall not be classified grcatcr than a slight smoker a t 191C. 3.6 JUTERUL PROPEKIlJB - UNCURED ADHESIVE. See Table 1. 3.7 GAP AT BREAK Mate
9、rial is applied in drop form to a cold rolled steel p e l , 0.7 x 100 x 100 mm. he drop has a 3 0 flmmdiabascanda25flmrnheight.Anothercoldrolled sttcl panel, 0.7 x 100 x 100 mm, is placed over the drop. The drop is compressed 80% of original height (5 fl mm), using the top steel panel. The top panel
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