Nagata K, Hirasawa T, Masuhara E
Shika Rikogaku Zasshi. 1976 May;17(38):132-8.
The initial polymerization point and the polymerization progress have been observed on powder-liquid pour type acrylic resin and one-liquid pour type acrylic resin. The results are as follows: 1. In case of un-heating at the bottom of powder liquid resin, in the former stage the polymerization makes the regular progress from the bottom part to the upper of the mould, but in the latter stage it does some irregular one. In case of heating at the bottom, at first it shows a better regular progress as in the case of un-heating. 2. In case of un-heating at the bottom of one-liquid resin, in the first stage the polymerization makes the regular progress from the bottom part of the resin and at the same time from its middle of the mould, and then to the upper part and the sprue part. In case of heating at the bottom, it begins just from the heated part, then it goes quite regularly to the middle, the upper, and the sprue part, and lastly the polymerization shrinkage concentrates exclusively at the sprue part.
在粉液型灌注式丙烯酸树脂和单液型灌注式丙烯酸树脂上观察到了初始聚合点和聚合进程。结果如下：1. 在粉液树脂底部不加热的情况下，前期聚合从模具底部向上部有规律地进行，但后期则出现不规则情况。在底部加热的情况下，起初它与不加热时一样呈现较好的规律进程。2. 在单液树脂底部不加热的情况下，第一阶段聚合从树脂底部同时从模具中部开始有规律地进行，然后向上部和浇口部分发展。在底部加热的情况下，它从加热部位开始，然后非常有规律地向中部、上部和浇口部分发展，最后聚合收缩完全集中在浇口部分。
