| 超微细SiO2的制备及其对天然橡胶硫化胶结构与性能的影响 |
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| 引用本文： | 魏福庆,李志君,张财明,何泽栋.超微细SiO2的制备及其对天然橡胶硫化胶结构与性能的影响[J].弹性体,2003,13(6):4-8. |
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| 作者姓名： | 魏福庆 李志君 张财明 何泽栋 |
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| 作者单位： | 华南热带农业大学工学院,高分子材料与工程系,海南,儋州,571737 |
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| 基金项目： | 中国热带农业科学院华南热带农业大学自然科学基金项目 (Rykj0 2 4 9) |
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| 摘 要： | 研究了溶胶-凝胶法和反胶团法制备的超微细SiO2填充天然橡胶(NR)硫化胶的硫化特性和力学性能，并与未改性纳米SiO2、KH-570改性纳米SiO2进行了比较结果表明：SiO2的制备方法和SiO2的填充质量分数对NR硫化胶的硫化特性有很大的影响，溶胶-凝胶法和反胶团法制备的超微细SiO2填充NR硫化胶的门尼焦烧时间缩短，综合力学性能优于纳米SiO2／NR硫化胶；试片的拉伸断面电子扫描显微镜(SEM)观察表明，制备的超微细SiO2在NR硫化胶中的分散性较好，拉伸断面的NR基质产生了剪切变形的痕迹。体现了超微细SiO2对NR硫化胶较强的补强效果。
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| 关 键 词： | 超微细体 二氧化硅 天然橡胶 硫化胶 溶胶-凝胶法 反胶团法 焦烧时间 硫化特性 力学性能 |
| 文章编号： | 1005-3174(2003)06-0004-05 |
| 修稿时间： | 2003年6月26日 |
The preparation technology of microfine SiO2 and its effect on the structure and properties of the NR vulcanizate |
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| WEI Fu-qing,LI Zhi-jun,ZHANG Cai-ming,HE Ze-dong.The preparation technology of microfine SiO2 and its effect on the structure and properties of the NR vulcanizate[J].China Elastomerics,2003,13(6):4-8. |
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| Authors: | WEI Fu-qing LI Zhi-jun ZHANG Cai-ming HE Ze-dong |
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| Abstract: | Microfine SiO_2 was prepared by sol-sel method and reversed micelle method.Curing peculiarity and mechanical properties of the NR vulcanizate which filled with unmodified nano SiO_2 (sp1),modified nano SiO_2 (SP1-5703) and microfine SiO_2,were investigated.The results showed that NR vulcanizate filled with microfine SiO_2 prepared by sol-sel method and reversed micelle method has shorter Mooney scorch time,bigger tensile strength than that filled with nano SiO_2; the break surface of test pieces were observed by scanning electron microscope (SEM),and found that the dispersivity of microfine SiO_2 is much better than that of nano SiO_2 and microfine SiO_2 has better reinforcing action than nano SiO_2. |
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| Keywords: | microfine SiO_2 vulcanizate scorch time conformation mechanical property |
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