| 苯乙烯在异氰酸酯官能化二元乙丙橡胶中的作用 |
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| 引用本文： | 付学俊,徐茜,蒋涛,王国成. 苯乙烯在异氰酸酯官能化二元乙丙橡胶中的作用[J]. 弹性体, 2008, 18(1): 22-26 |
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| 作者姓名： | 付学俊 徐茜 蒋涛 王国成 |
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| 作者单位： | 1. 湖北大学,材料科学与工程学院高分子材料湖北省重点实验室,湖北,武汉,430062
2. 武汉大学,化学与分子科学学院,湖北,武,汉430072 |
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| 基金项目： | 湖北省重点实验室基金 , 湖北省科技厅科技攻关项目 |
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| 摘 要： | 在苯乙烯（St）存在下,以2,5-二甲基-2,5-双（叔丁基过氧基）己烷（DHBP）为引发剂,3-异丙烯基-α,α-二甲基苄基异氰酸酯（TMI）为接枝单体,于哈克转矩密炼机中对二元乙丙橡胶（EPM）进行了自由基接枝官能化,产物用傅立叶红外光谱仪进行表征,并用化学滴定法对接枝率进行测定。实验结果表明,TMI成功地接枝到EPM上;适量St作为共单体加入体系中起到抑制EPM中PP链段的降解和提高TMI的接枝率两方面作用。
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| 关 键 词： | 二元乙丙橡胶 官能化 异氰酸酯 接枝 |
| 文章编号： | 1005-3174(2008)01-0022-05 |
| 修稿时间： | 2007-09-05 |
The role of styrene in isocyanate functionalization of ethylene-propylene copolymer |
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| FU Xue-jun,XU Qian,JIANG Tao,WANG Guo-cheng. The role of styrene in isocyanate functionalization of ethylene-propylene copolymer[J]. China Elastomerics, 2008, 18(1): 22-26 |
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| Authors: | FU Xue-jun XU Qian JIANG Tao WANG Guo-cheng |
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| Affiliation: | FU Xue-jun,XU Qian,JIANG Tao,WANG Guo-cheng(1. Hubei Province Key Laboratory of Polymer Materials,Faculty of Materials Science and Engineering,University,Wuhan 430062,China;2. College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China) |
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| Abstract: | Ethylene-propylene copolymer （EPM） was functionalized with isocyanate-bearing unsaturated monomer, 3-isopropenyl-α,α-dimethylbenzene isocyanate （TMI） and comonomer styrene, using 2,5-dimethyl-2,5-di（tert-butylperoxy）-hexane （DHBP） as free-radical initiator in Haake torque rheometer. FTIR was used to characterize the formation of grafting materials, and the chemical titration method was used to measure the degree of grafting. The results show that the comonomer styrene can greatly improve the grafting degree of TMI and reduce the degradation of PP chains in EPM ma-cromolecules. |
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| Keywords: | ethylene-propylene copolymer functionalization isocyanate grafting |
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