| 硫黄在NR硫化胶中的溶解及扩散 |
| Solubility and Diffusion of Sulfur in NR Vulcanizate |
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| DOI： |
| 中文关键词: 硫黄 NR硫化胶 溶解度 分配因子 扩散系数 |
| 英文关键词: sulfur NR vulcanizate solubility distribution coefficient diffusion coefficient |
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| 中文摘要: |
| 根据分配定律，测定了40 ℃时硫黄在NR硫化胶中的溶解度为1.04，硫黄在胶料与硫化胶之间的分配因子K为0.84，由此计算出40 ℃时硫黄在胶料中的溶解度为1.24。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3.2×10-5mm2·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。 |
| 英文摘要: |
| It was determined based on the distribution law that the solubility of sulfur in NR vulcanizate was 1.04 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，D was 3.2×10-5 mm2·s-1 when the calculation was carried out from the experimental diffusion curve of sulfur. |
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