单词	prepolymer
释义	prepolymer /priːˈpɒlɪmə / noun Chemistry A substance which represents an intermediate stage in polymerization, and can be usefully manipulated before polymerization is completed: the prepolymer forms a polymerized gel when activated... Siloxanes are prepolymers - the result of partial polymerization of silanes - in which the molecules are beginning to link, but only in sets of two or three, not yet in full chains. Some researchers believe that prepolymers achieve better results. Artificial clays containing a catalyst can initiate polymerization when the particles are mixed with a prepolymer matrix.
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