Inoue K, Hayashi I, Kakigawa H, Sugino Y, Terashita M
Shika Rikogaku Zasshi. 1976 Jan;17(37):44-50.
To obtain a precise impression, it is indispensable to understand changes of physical property of the material used, during curing. The authors measured the viscosity and the storage modulus of polyether rubber which was recently introduced as a commercial impression material and tried to make clear the curing mechanism of the material. The less the amount of catalyst added to the base material, the more approximative is the behaviour to the first-order reaction. But according as the amount of catalyst increases the behaviour becomes not to be regarded as the first-order reaction, i.e., it is surmised that the curing reaction becomes so complicated. The more the amount of catalyst and the higher the temperature after mixing, the shorter is the setting time. The curing reaction of polyether rubber impression material is supposed to be completed in about 3 hours after mixing. Polyether rubber impression material showed the highest storage modulus among the three rubber impression materials not used, namely, polyether, polysulfide and silicone rubber. The values of this highest modulus of polyether rubber were about 2.4approximately2.8 times of those of polysulfide and silicone rubber impression material in 3 hours after mixing.
为了获得精确的印模，了解所用材料在固化过程中的物理性能变化是必不可少的。作者测量了最近作为商业印模材料引入的聚醚橡胶的粘度和储能模量，并试图阐明该材料的固化机制。添加到基础材料中的催化剂用量越少，其行为就越接近一级反应。但随着催化剂用量的增加，其行为不再被视为一级反应，即推测固化反应变得如此复杂。催化剂用量越多且混合后温度越高，凝固时间越短。聚醚橡胶印模材料的固化反应预计在混合后约3小时内完成。在未使用的三种橡胶印模材料（即聚醚、聚硫和硅橡胶）中，聚醚橡胶印模材料显示出最高的储能模量。在混合后3小时，聚醚橡胶这种最高模量的值约为聚硫和硅橡胶印模材料的2.4至2.8倍。
