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徐寬浩,金祐埴,池一勳 慶北大學校 1989 論文集 Vol.47 No.-
To decrease the blowing temperature of paste PVC, citric acid, boric acid, boric acid, 4,4'-oxybis(benzenesulfonyl hydrazide), and p-toluenesulfonyl hydrazide were mixtured in azodicarbonamide with warious weight ratios, respectively. Boric acid had not an important effect on the decreasing the decomposition temperature of azodicarbonamide. Citric acid had a good effect on the decomposition temperature of azodicarbonamide. But, when the citric acid was used as co-blowing agent, the cell of PVC foam was bad. 4,4'-oxybis(benzenesulfonyl hydrazide) and p-toluenesulfonyl hydrazide had a good effect on the decreasing the decomposition temperature of azodicarbonamide, and the cell of PVC foam was good. Moreover, when 4,4'-oxybis(benzenesulfonyl hydrazide) was used as co-blowing agent, the cell of PVC foam was excellent.