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首页> 外文期刊>Journal of Applied Polymer Science >Surface modification of vulcanized rubber by radiation grafting, PART 1: Improvement in friction
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Surface modification of vulcanized rubber by radiation grafting, PART 1: Improvement in friction

机译：辐射接枝硫化橡胶的表面改性，第1部分：摩擦的改进

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摘要

Hydrophilic monomer, 2-hydroxyethyl methacrylate (HEMA), and hydrophobic monomer, 3-(methacryloyloxy)propyltris(trimethylsiloxy)silane (MPTS) were grafted on vulcanized rubber surface with simultaneous electron beam irradiation. Degree of graft polymerization was evaluated by composition ratio of imparted graft chain against trunk rubber. The composition ratio could be controlled by the monomer concentration and the irradiation dose. Grafted rubbers were evaluated by surface roughness and contact angle. Graft polymerization of HEMA decreased the contact angle from 93 to ～ 70° without considerable change of the surface roughness. In the case of MPTS, the contact angle increased approximately to 108°. The relationship between the contact angle of water on the modified surface and the friction at the moment of semi-dry was investigated as an application of the resulting rubber to wiper blade. The increase of the contact angle owing to the grafting of hydrophobic MPTS led to the decrease of Δμ (deference between semi-dry state and dry friction). Instead, the decrease of the contact angle by grafting of hydrophilic HEMA resulted in the increase of Δμ.
机译：将亲水性单体甲基丙烯酸2-羟乙酯（HEMA）和疏水性单体3-（甲基丙烯酰氧基）丙基三（三甲基甲硅烷氧基）硅烷（MPTS）接枝到硫化橡胶表面，同时进行电子束照射。通过所赋予的接枝链与主干橡胶的组成比来评价接枝聚合度。组成比可以通过单体浓度和照射剂量来控制。通过表面粗糙度和接触角评估接枝橡胶。 HEMA的接枝聚合反应使接触角从93降低到〜70°，而表面粗糙度没有明显变化。对于MPTS，接触角大约增加到108°。研究了水在改性表面上的接触角与半干时摩擦之间的关系，作为将所得橡胶应用于刮水片的研究。由于疏水性MPTS的接枝而导致的接触角的增加导致Δμ的降低（半干态与干摩擦之间的关系）。相反，通过亲水性HEMA的接枝减小接触角导致Δμ的增加。

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