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研究了用等离子体处理进行的几种不同类型的PET帘线的改性。聚酯帘线经过等离子体反应器中产生的脉冲表面正电晕放电或经过大气压下共面介电势垒放电处理,帘线与橡胶基质的粘合强度、机械性能和表面特性均发生明显的变化。表面放电是以帘线由氮脉冲等离子体激活为基础,随后用马来酸(MA)溶液接枝,以提高帘线与橡胶的粘合强度。研究了溶液中的MA浓度、帘线移动速度和接枝时间等3个参数。用氮与丁二烯的混合物对帘线进行等离子体聚合改性,通过脉冲表面正电晕放电可以在正常大气压下产生均匀等离子体层。结果显示,等离子体处理的帘线的静、动态粘合强度值可与用RFL标准化学处理的帘线媲美。等离子体处理对机械性能无任何影响。还研究了等离子体改性聚酯帘线的形态变化。
Several different types of PET cords modified with plasma treatment were studied. Polyester cords through the plasma reactor generated by the pulse surface of the positive corona discharge or under atmospheric pressure coplanar dielectric barrier discharge treatment, the cord and the rubber matrix adhesive strength, mechanical properties and surface properties were significant Variety. Surface discharge is based on activation of the cord by nitrogen pulsed plasma followed by grafting with a maleic acid (MA) solution to increase the cord to rubber bond strength. The three parameters of MA concentration in the solution, the moving speed of the cord and the grafting time were studied. The cords are plasma modified with a mixture of nitrogen and butadiene to produce a uniform plasma layer at normal atmospheric pressure by pulsed surface corona discharge. The results showed that the static and dynamic adhesive strength values of the plasma-treated cord were comparable to those of the cord-chemically treated RFL. Plasma treatment has no effect on mechanical properties. The morphological changes of plasma-modified polyester cords were also studied.