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聚四氟乙烯改性水性聚氨酯自润滑涂料的制备与应用

Jing YANG,Lyu ZHANG,Yuchuan ZHANG

China Rubber Industry（2018）

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Abstract
通过向封闭型有机硅改性水性聚氨酯(PU)乳液中,加入聚四氟乙烯(PTFE)水性分散液及色浆、助剂等,制备三元乙丙橡胶(EPDM)制品用水性自润滑涂料,考察用其涂装EPDM硫化试样表面时涂层厚度、附着力和摩擦性能.试验结果表明:涂层为亚光黑色,厚度为5～10 μm,滑动摩擦因数在0.4以下,附着良好.加入10份PTFE水性分散液(以有机硅改性水性PU乳液为100份计)时,在满足涂层附着力要求的前提下,显著降低了涂层表面滑动摩擦因数,达到自润滑和耐磨的使用要求.
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