SEDL / STP / STP788-EB / STP28508S

Reaction Injection Molding Urethanes: Heat Sag Characteristics

Rice, DM
Senior project chemist, project chemist, and supervisor, Texaco Chemical Company, Austin, Tex.

Dominguez, RJG
Senior project chemist, project chemist, and supervisor, Texaco Chemical Company, Austin, Tex.

Lloyd, RF
Senior project chemist, project chemist, and supervisor, Texaco Chemical Company, Austin, Tex.

Pages: 10    Published: Jan 1982

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Abstract

The heat sag test is used by many end users in their specifications for reaction injection molding (RIM) methane materials. The test is evaluated for low-modulus fascia RIM materials and the high mod RIM material presently being studied for exterior body panel applications. A number of variables which can influence the heat sag test are examined and their relative effect discussed.