永久抗静电剂有哪些及永久抗静电剂的特色?

2025-03-16 14:41:32
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回答1:

永久抗静电剂有哪些及永久抗静电剂的特色?
这里讲的永久抗静电剂指的是外涂型永久抗静电剂。
外涂型永久抗静电剂生产厂家有:纳路特抗静电剂,葆力孚抗静电剂,Acl抗静电剂和Colcoat抗静电剂。这些生产厂家的永久抗静电剂都不错,效果都还不错,要买永久抗静电剂,找这些厂家没错。
纳路特抗静电剂是耐水洗抗静电剂,即用水冲洗或者用湿毛巾擦拭不会失去抗静电功能。其他生产厂家的永久抗静电剂是传统抗静电剂,不耐水洗,用水冲洗或者用湿毛巾擦拭,就会失去抗静电功能。

传统型抗静电剂是由小分子的表明活性剂组成,它含有亲水基团和亲油基团。由于它与树脂本身不完全相容,因此抗静电剂会从树脂内部迁移到树脂表面。传统型抗静电剂需要在一定的湿度条件下方可起作用,其亲水基团能促进塑料表面被水湿润,从而疏导静电荷,降低塑料的表面电阻率。只有当传统抗静电剂分子迁移到表面后才能起作用,塑料内部的抗静电剂分子不断地迁移至表面,直至完全消耗,因而其作用效果仅在一定时间范围内有效。
高分子永久型抗静电剂只能通过混炼的方法加入到基料中。它不是靠迁移至塑料表面,而是靠在塑料内部形成一个具有导电能力的渗滤网络,以此为通路解掉表面及本体内的静电荷,降低电阻率。与传统抗静电剂相比,其抗静电效果持久,无诱导期,不受擦拭和洗涤等条件影响;因为它的导电性能不是靠水层来达到的,因而对空气的相对湿度依赖性小;制品的机械性能和耐热性能不受其影响,但添加量较大(一般为5%-20%),价格偏高。

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