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    • 2. 发明授权
    • Method for making cast epoxy resin bodies and epoxy formulation therefor
    • 铸造环氧树脂体及其环氧树脂配方的制造方法
    • US4374076A
    • 1983-02-15
    • US310170
    • 1981-10-09
    • James E. StephanPaul A. BoduchJohn A. Elverum
    • James E. StephanPaul A. BoduchJohn A. Elverum
    • C08G59/00A61K6/087A61K6/10B29C39/00B29C39/38B29C39/40C08G59/38C08G59/42C08L63/00B29C5/00A61C13/08
    • C08G59/4223B29C39/006B29C39/38B29C39/40C08G59/38B29K2063/00
    • A method for making cast precision epoxy resin bodies and an epoxy resin formulation for use therein, the epoxy resin formulation having Component A consisting essentially of from 40 to 70% by weight epoxy novolac polymer, from 30 to 50% by weight vinyl -3-cyclohexene diepoxide and from 0 to 20% by weight 3,4 epoxy cyclohexylmethyl -3,4-epoxy cyclohexane carboxylate and Component B consisting essentially of partially hydrolyzed aryl tetracarboxylic acid dianhydride, preferably partially hydrolyzed pyromellitic acid dianhydride. In the preferred embodiments a tertiary amine catalyst is also included. These components are mixed, just before use, in a ratio of from 20 to 50 parts by weight Component B to each 100 parts by weight Component A. To make the cast precision bodies such mixture is cast in a mold of the shape desired, allowed to cure to a solid body while in the mold, and thereafter heated to cause permanent expansion thereof at least sufficient to compensate for any shrinkage occurring during the casting and hardening thereof while in the mold.
    • 一种用于制造铸造精密环氧树脂体和用于其中的环氧树脂配方的方法,所述环氧树脂制剂具有基本上由40至70重量%的环氧酚醛清漆聚合物组成的组分A,30至50重量%的乙烯基-3- 环己烯二环氧化物和0至20重量%的3,4-环氧环己基甲基-3,4-环氧环己烷羧酸酯和组分B,其基本上由部分水解的芳基四羧酸二酐组成,优选部分水解的均苯四酸二酐。 在优选的实施方案中也包括叔胺催化剂。 这些组分在使用前混合,比例为20至50重量份组分B与每100重量份组分A.为了使铸造精密体将这种混合物浇铸在所需形状的模具中,允许 在模具中固化成固体,然后加热至其永久膨胀至少足以补偿在模具中铸造和硬化期间发生的任何收缩。