Surface modification of vulcanized rubber by radiation grafting, part 2: Improvement in performance of wiper rubber
Surface modification of vulcanized rubber by radiation grafting, part 2: Improvement in performance of wiper rubber
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辐射接枝法对硫化橡胶进行表面改性，第 2 部分：雨刷橡胶性能的改进
DOI：
10.1002/app.34736
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
M. Tamada
中科院分区：
文献类型：
--
作者：
Norihito Mizote;A. Katakai;M. Tamada
通过辐射诱导接枝亲水性单体甲基丙烯酸2-羟乙酯（HEMA）对天然橡胶进行表面改性，以改善天然橡胶的表面硬度、干摩擦、擦拭性能和磨损持续时间等性能。通过FT-IR分析接枝HEMA与靠近HEMA接枝橡胶表层的橡胶的比例，并以组成比表示。通过改变接枝聚合时HEMA浓度和剂量，将组成比控制在0.29～0.93。当该组成比高于0.8时，表面硬度高于70，干摩擦系数低于0.65。在磨损和与玻璃的摩擦方面，这些值优于市售氯化橡胶。由于接枝HEMA通过与水接触而软化，湿态下的表面硬度变得非常接近天然橡胶。结果，接枝HEMA橡胶实现了95％以上的玻璃上的水擦拭性能。此外，其耐磨性比氯化橡胶高八倍。 © 2011 Wiley periodicals, Inc. J Appl Polym Sci，2012
Surface of natural rubber was modified by radiation-induced grafting of hydrophilic monomer, 2-hydroxyethyl methacrylate (HEMA), to improve the properties of surface hardness, dry friction, wiping performance, and wear duration. The ratio of grafted-HEMA to the rubber near the surface layer of HEMA-grafted rubber was analyzed by FT-IR and expressed as composition ratio. The composition ratio was controlled from 0.29 to 0.93 by changing HEMA concentration and dose in graft polymerization. When this composition ratio was higher than 0.8, the surface hardness was higher than 70 and the coefficient of dry friction lower than 0.65. Those values became better than those of commercially available chlorinated-rubber in terms of wear and friction against glass. The surface hardness in wet state became very close to natural rubber since grafted-HEMA was softened by contacting with water. As a result, the grafted-HEMA rubber realized 95% and higher wiping performance of water on glass. Additionally, the wear resistance was eight times higher than chlorinated rubber. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012