CN112646136A - 一种非氟非硅离型膜及其制备方法 - Google Patents

一种非氟非硅离型膜及其制备方法 Download PDF

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CN112646136A
CN112646136A CN202011541401.XA CN202011541401A CN112646136A CN 112646136 A CN112646136 A CN 112646136A CN 202011541401 A CN202011541401 A CN 202011541401A CN 112646136 A CN112646136 A CN 112646136A
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江逸民
钟永旺
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Anhui Green Cosmotec Optoelectronics Technologies Co ltd
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Abstract

本发明公开了一种非氟非硅离型膜及其制备方法,涉及离型膜技术领域,其原料按重量份包括:二元酸单体200~2000份、二元醇单体100~3000份、烯烃预聚物1~200份、催化剂0.1~2份;其中,所述烯烃预聚物的制备原料包括:烯烃1~200份、碘化合物0.1~10份、引发剂0.1~10份;其制备方法如下:将二元酸单体、二元醇单体、烯烃预聚体和催化剂加入到反应容器中,加热搅拌进行酯化反应,反应结束后冷却造粒,形成母料,经熔融双向拉伸后即得非氟非硅离型膜。本发明是将一种非氟非硅的烯烃聚合物加入到聚酯合成过程中,直接制备得到非氟非硅离型膜,无需再进行涂层处理,从而降低非硅涂层的迁移,本发明大大简化了离型膜的制备过程,同时提高了离型膜的使用效果。

Description

一种非氟非硅离型膜及其制备方法
技术领域
本发明涉及离型膜技术领域,尤其涉及一种非氟非硅离型膜及其制备方法。
背景技术
离型膜是与特定的材料在有限的条件下接触后不具有粘性,或轻微的粘性的膜材料。目前PET离型膜之所以具有离型效果,主要是因为表面涂布一层具有阻隔效果的硅油或者氟素硅油。
但是随着电子显示屏行业的兴起,华为、苹果等众多公司要求离型膜不能含有任何硅元素,因为即使微量的硅转移也会导致OCA胶带在显示屏领域上的贴合出现瑕疵,污染面板,导致良品率降低。因此,非硅离型膜逐步兴起。
然而,非硅离型膜的涂布依然需要大量的溶剂进行稀释,而且非硅离型剂与PET基材的结合牢度也是一大问题。以日东的31B胶带为测试胶带,其残余粘附力也仅为80%,涂层的转移率依然较大。即使采用电晕的方法对PET基材进行预处理,然而随着时间的变化,涂层的表面迁移会愈加严重。
发明内容
基于背景技术存在的技术问题,本发明提出了一种非氟非硅离型膜及其制备方法,是将一种非氟非硅的烯烃聚合物加入到聚酯合成过程中,直接制备得到非氟非硅离型膜,无需再进行涂层处理。
本发明提出的一种非氟非硅离型膜,其原料按重量份包括:二元酸单体200~2000份、二元醇单体100~3000份、烯烃预聚物1~200份、催化剂0.1~2份;其中,所述烯烃预聚物的制备原料包括:烯烃1~200份、碘化合物0.1~10份、引发剂0.1~10份。
在本发明中,二元酸单体包括对苯二酸、间苯二酸、邻苯二酸等;二元醇单体包括乙二醇、丙二醇等。
优选地,所述烯烃的结构式为CH2=CHCnH2n-1,n≥2。
优选地,所述碘化合物的结构式为I(CH2)mI,m=0~10。
优选地,所述烯烃预聚体的制备如下:将烯烃、碘化合物、引发剂加入到反应容器中,抽真空置换出空气,油浴进行恒温聚合反应,反应一段时间后,向反应体系中加水,在回流状态下进行水解反应,干燥,即得烯烃预聚体。
优选地,油浴在50-60℃下进行恒温聚合反应。
本发明还提出了一种上述非氟非硅离型膜的制备方法,包括以下步骤:将二元酸单体、二元醇单体、烯烃预聚体和催化剂加入到反应容器中,加热搅拌进行酯化反应,反应结束后冷却造粒,形成母料,经熔融双向拉伸后即得非氟非硅离型膜。
本发明的反应机理如下:
Figure BDA0002854716530000021
在本发明中,该烯烃预聚物的结构式为:HO(CH2CHCnH2n-1)x-(CH2)m-(CH2CHCnH2n-1)yOH。
有益效果:本提出了一种非氟非硅离型膜,相较于传统离型膜制备中将非硅离型剂涂布在PET基材表面,本发明则是将一种非氟非硅的烯烃聚合物加入到聚酯合成过程中,直接制备得到非氟非硅离型膜,无需再进行涂层处理,从而降低非硅涂层的迁移,也无需用到溶剂。本发明大大简化了离型膜的制备过程,同时提高了离型膜的使用效果。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
烯烃预聚体(A1)的合成过程如下:将100份十四烯、10份二碘甲烷、0.4份AIBN加入到反应瓶中,抽真空充入氮气置换空气后,油浴60℃进行聚合,反应一段时间后,加入适量的水,在回流状态下水解。然后烘烤得到烯烃预聚体。
实施例2
烯烃预聚体(A2)的合成过程如下:将200份十二烯、5份碘、0.2份BPO加入到反应瓶中,抽真空充入氮气置换空气后,油浴50℃进行聚合,反应一段时间后,加入适量的水,在回流状态下水解。然后烘烤得到烯烃预聚体。
实施例3
将2000份对苯二酸、1000份乙二醇、100份烯烃预聚体(A1),0.3份乙二醇锑加入到反应釜中,抽真空并加热至280℃搅拌进行缩合反应;冷却造粒,形成母料,熔融双向拉伸后得到100μm厚度的无胶粘剂涂层胶带。
实施例4
与实施例3相比,区别仅在于,将实施例3中的100份烯烃预聚体(A1)替换为200份烯烃预聚体(A2)。
实施例5
将2000份间苯二酸、1500份丙二醇、50份烯烃预聚体(A1),0.8份乙二醇锑加入到反应釜中,抽真空并加热至280℃搅拌进行缩合反应;冷却造粒,形成母料,熔融双向拉伸后得到100μm厚度的无胶粘剂涂层胶带。
实施例6
将2000份对苯二酸、1200份丙二醇、150份烯烃预聚体(A2),1.5份乙二醇锑加入到反应釜中,抽真空并加热至290℃搅拌进行缩合反应;冷却造粒,形成母料,熔融双向拉伸后得到100μm厚度的无胶粘剂涂层胶带。
按照GB/T 25256-2010测试实施例3-6制备的非氟非硅离型膜的离型力H0和残余黏着率,数据如下:
离型力(g/25mm) 残余附着力(%)
实施例3 13 95
实施例4 12 98
实施例5 12 94
实施例6 11 97
从表中可以看出,本发明制备的离型膜的残余附着力高。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。

Claims (6)

1.一种非氟非硅离型膜,其特征在于,其原料按重量份包括:二元酸单体200~2000份、二元醇单体100~3000份、烯烃预聚物1~200份、催化剂0.1~2份;其中,所述烯烃预聚物的制备原料包括:烯烃1~200份、碘化合物0.1~10份、引发剂0.1~10份。
2.根据权利要求2所述的非氟非硅离型膜,其特征在于,所述烯烃的结构式为CH2=CHCnH2n-1,n≥2。
3.根据权利要求2所述的非氟非硅离型膜,其特征在于,所述碘化合物的结构式为I(CH2)mI,m=0~10。
4.根据权利要求1-3任一项所述的非氟非硅离型膜,其特征在于,所述烯烃预聚体的制备如下:将烯烃、碘化合物、引发剂加入到反应容器中,抽真空置换出空气,油浴进行恒温聚合反应,反应一段时间后,向反应体系中加水,在回流状态下进行水解反应,干燥,即得烯烃预聚体。
5.根据权利要求4所述的非氟非硅离型膜,其特征在于,油浴在50-60℃下进行恒温聚合反应。
6.一种基于权利要求1-5任一项所述的非氟非硅离型膜的制备方法,其特征在于,包括以下步骤:将二元酸单体、二元醇单体、烯烃预聚体和催化剂加入到反应容器中,加热搅拌进行酯化反应,反应结束后冷却造粒,形成母料,经熔融双向拉伸后即得非氟非硅离型膜。
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Application publication date: 20210413

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