配方类型：	MISCELLANEOUS
配方说明：	Epoxy Hardener
配方组成：	Epoxy Resin/40 Benzyl Alcohol/88 IPD/55 Physical Properties Visc. @ 20 C (mPas)/615 Density @ 20 C (g/ml)/1.029 Salicylic Acid/12 Refractive Index/1.5309 TMD/45 Water Miscibility (vol. water:1 vol. hardener)/0.28:1
配制方法：	These hardener blends can easily be prepared by dissolving salicylic acid (accelerator) in benzyl alcohol (or methylbenzyl alcohol) and finally adding IPD or TMD or a blend of both. For the formulation of the so-called "in-situ adducts," an epoxy resin is reacted with a considerable excess of amine hardener. In this case the epoxy resin is added drop by drop while stirring and finally stirred for an additional 2 h. The production of blends is accompanied by a slight evolution of heat. The reaction should be controlled in order not to exceed 100 C. In these blends the benzyl (or methylbenzyl) alcohol acts as a solvent for the accelerator (salicylic acid) and furthermore flexibilizes the resin/hardener system, since it does not evaporate and remains in the film after curing.

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