摘要
根据分配定律，测定了４０℃时硫黄在ＮＲ硫化胶中的溶解度为１０４，硫黄在胶料与硫化胶之间的分配因子Ｋ为０８４，由此计算出４０℃时硫黄在胶料中的溶解度为１２４。根据硫黄实验扩散曲线计算硫黄在硫化胶中的平均扩散系数Ｄ为３２×１０－５ｍｍ２·ｓ－１，由此推算出４０℃下任意贮存时间内硫黄从胶料向硫化胶迁移的理论扩散曲线。
It was determined based on the distribution law that the solubility of sulfur in NR vulcanizate was 104 g·(100 g)-1 at 40 ℃ and the distribution coefficient of sulfur between NR compound and its vulcanizate,K was 0.84.Therefrom,it was predicted by calculation that the solubility of sulfur in NR compound at 40 ℃ was 1.24.Thus,a theoretical diffusion curve of sulfur from NR compound to its vulcanizate at 40 ℃ during the storage period was derived based on the fact that the average diffusion coefficient of sulfur in vulcanizate, was 3.2×10-5 mm2·s-1 when the calculation was carried out from the experimental diffusion curve of sulfur.
出处
《橡胶工业》
CAS
北大核心
1998年第6期328-333,共6页
China Rubber Industry
关键词
硫黄
硫化胶
溶解度
扩散系数
天然橡胶
橡胶
sulfur,NR vulcanizate,solubility,distribution coefficient,diffusion coefficient
