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首页> 外文期刊>Journal of Applied Polymer Science >A comparison of the effects of traditional and wet mixing processes of rubber on metal friction and wear
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A comparison of the effects of traditional and wet mixing processes of rubber on metal friction and wear

机译：橡胶传统和湿式混合过程对金属摩擦和磨损效果的比较

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摘要

Prolonged operations of mixers cause wear of mixer rotors and chamber walls and affect the clearances between the rotors and chamber walls, which reduce the mixing effect, weaken the dispersion of the packing, and affect the quality of rubber products. In this study, the effects of traditional mixing and wet mixing on the friction and wear of the chamber, and the properties of rubber were compared by using 60 phr of a silica natural rubber formulation system. The results show that a silanization reaction occurs between silica and the silane coupling agent during the mixing process and that the reaction rate is fastest when the temperature of the mixing chamber is maintained between 145 and 155 degrees C for 1 min during the mixing process. The products of silanization reaction are ethanol and water; the water vapor that forms at high temperatures corrodes the mixing chamber of the internal mixer and aggravates wear and tear. Due to the high dispersion of silica during wet mixing, the silanization reaction is more complete and water vapor is produced at a high temperature. Hence, the rubber compound obtained by wet mixing has more significant wear on the mixing chamber.
机译：搅拌机长时间运行会导致搅拌机转子和室壁磨损，并影响转子和室壁之间的间隙，从而降低混合效果，削弱填料的分散性，并影响橡胶制品的质量。在本研究中，采用60份二氧化硅天然橡胶配方体系，比较了传统混合和湿混合对腔体摩擦磨损的影响，以及橡胶的性能。结果表明，在混合过程中，二氧化硅和硅烷偶联剂之间发生了硅烷化反应，并且在混合过程中，当混合室的温度保持在145至155℃之间1分钟时，反应速度最快。硅烷化反应的产物为乙醇和水；高温下形成的水蒸气会腐蚀密炼机的混合室，加剧磨损。由于在湿混合过程中二氧化硅的高度分散，硅烷化反应更加完整，并且在高温下产生水蒸气。因此，通过湿混合获得的橡胶化合物对混合室具有更显著的磨损。

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