CN112280487A - 一种高性能丙烯酸酯防爆膜 - Google Patents

一种高性能丙烯酸酯防爆膜 Download PDF

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CN112280487A
CN112280487A CN202011175099.0A CN202011175099A CN112280487A CN 112280487 A CN112280487 A CN 112280487A CN 202011175099 A CN202011175099 A CN 202011175099A CN 112280487 A CN112280487 A CN 112280487A
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王小莉
梁明月
张欢
陈淼淼
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Nanjing Huixin Photoelectric Material Co ltd
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Abstract

一种高性能丙烯酸酯防爆膜,其包括丙烯酸酯聚合物,PET基材和PET离型膜,所述丙烯酸酯聚合物包括丙烯酸0.2‑0.6份、甲基丙烯酸甲酯10‑30份、丙烯酸丁酯10‑30份、丙烯酸羟乙酯10‑30份、丙烯酸羟丁酯5‑15份、醋酸乙烯酯8‑10份、甲基丙烯酸缩水甘油酯0.3‑0.9份、丙烯酸十七酯18‑20份、光引发剂0.4‑0.8份、三丙二醇二丙烯酸酯0.1‑0.3份、双季戊四醇六丙烯酸酯0.1‑0.3份;本发明采用UV聚合的丙烯酸酯压敏胶制成的防爆膜,在黏着性,高温保持性能比常规的产品有非常大的提升,并且其无溶剂残留的特征使其具有溶剂型胶粘剂无法比拟的环境友好特性。

Description

一种高性能丙烯酸酯防爆膜
【技术领域】
本发明涉及电子产品保护膜领域,具体为一种高性能丙烯酸酯防爆膜。
【背景技术】
防爆膜的用途非常广泛,其主要结构是以光学级和透明PET为基材,涂敷有光学性能和高性能高黏着的光学胶,适用与手机后盖、平板后盖等玻璃材质的内贴防爆,提供良好防止玻璃破裂造成的二次伤害,并且提高被贴结构的整体强度。其中高性能的胶粘剂在防爆膜的组成结构中起到非常重要的作用,其不但要有搞得透光性,耐老化性能,高黏着性能等许多苛刻的性能要求;
用于防爆膜上使用的压敏胶具有高耐候的性能表现其具有高黏着,高保持的性能特点,但是其生产成本高,并且由于环境保护的要求越来越严,因其生产过程中存在的大量溶剂使用和处理这是违背环境友好的大政策的,并且其在制成过程中有一些溶剂未挥发干净,残留溶剂本身就会对人体健康产生影响,对其应用场景也被极大的限制;
目前主流的防爆膜胶粘剂以溶剂型丙烯酸酯体系为主,其具有优异的耐候性和耐温性,广泛适用于大多数场景,但是因为其溶剂对环境和身体健康造成影响现在使用越来越被限制,目前市面上也在积极的寻找替代方案主要有水性压敏胶和有机硅体系压敏胶,但是水性压敏胶的耐候性和耐温性很难达到防爆膜的使用需求,采用有机硅体系压敏胶,其耐温性和耐候性都可以满足要求,但是其成本高而且具有硅转移污染被贴物等技术特性也很难解决掉。
由此可见,提供一种满足环保要求的高性能丙烯酸酯防爆膜是本领域亟需解决的问题。
【发明内容】
针对上述问题,本发明采用UV聚合的丙烯酸酯压敏胶制成的防爆膜,在黏着性,高温保持性能比常规的产品有非常大的提升,并且其无溶剂残留的特征使其具有溶剂型胶粘剂无法比拟的环境友好特性。
为解决上述问题,本发明提出一种高性能丙烯酸酯防爆膜,其包括丙烯酸酯聚合物、PET基材和PET离型膜,所述丙烯酸酯聚合物以重量份数计,包括以下组分:丙烯酸0.2-0.6份、甲基丙烯酸甲酯10-30份、丙烯酸丁酯10-30份、丙烯酸羟乙酯10-30份、丙烯酸羟丁酯5-15份、醋酸乙烯酯8-10份、甲基丙烯酸缩水甘油酯0.3-0.9份、丙烯酸十七酯18-20份、光引发剂0.4-0.8份、三丙二醇二丙烯酸酯0.1-0.3份、双季戊四醇六丙烯酸酯0.1-0.3份。
进一步的,所述丙烯酸酯聚合物以重量份数计,包括以下组分:丙烯酸0.4份、甲基丙烯酸甲酯20份、丙烯酸丁酯20份、丙烯酸羟乙酯20份、丙烯酸羟丁酯10份、醋酸乙烯酯9份、甲基丙烯酸缩水甘油酯0.6份、丙烯酸十七酯19份、光引发剂0.6份、三丙二醇二丙烯酸酯0.2份、双季戊四醇六丙烯酸酯0.2份。
一种应用于权利要求1所述的丙烯酸酯聚合物制备方法包括以下步骤:
步骤一:搅拌溶解形成混合物;
步骤二:UV聚合反应制备丙烯酸酯预聚物;
步骤三:制作丙烯酸酯聚合物并涂布制成成品;
步骤四:性能测定。
进一步的,所述步骤1中将丙烯酸、甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸羟乙酯、丙烯酸羟丁酯、醋酸乙烯酯、甲基丙烯酸缩水甘油酯、丙烯酸十七酯按比例加入反应釜中搅拌溶解,以400-600rpm/min转速搅拌10-60分钟,之后静置30min自然消泡。
进一步的,所述步骤二是向步骤一中获得的混合液体中加入光引发剂,并通入氮气保护,打开UV灯,光照20min,能量在200-1200MJ/cm2停止光照,检测粘度是否达到800-1200cps,若未达到,则继续光照直至粘度符合标准,搅拌均匀制成丙烯酸酯预聚物。
进一步的,所述步骤三是向丙烯酸酯预聚物加入三丙二醇二丙烯酸酯和双季戊四醇六丙烯酸酯制作丙烯酸酯聚合物,接着在PET基材上进行涂布,涂布之后再进行光照,达到4000-8000MJ/cm 2后停止光照,在光照固化后的半成品上覆盖PET离型膜制成成品。
再者,本发明采用UV聚合的丙烯酸酯压敏胶制成的防爆膜,在黏着性,高温保持性能比常规的产品有非常大的提升,并且其无溶剂残留的特征使其具有溶剂型胶粘剂无法比拟的环境友好特性。
【附图说明】
图1是本发明性能测定结果表。
【具体实施方式】
本发明所提到的方向用语,例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等,仅是附图中的方向,只是用来解释和说明本发明,而不是用来限定本发明的保护范围。
本发明提供的一种高性能丙烯酸酯防爆膜,其包括丙烯酸酯聚合物,PET基材和PET离型膜,所述丙烯酸酯聚合物以重量份数计,包括以下组分:丙烯酸0.2-0.6份、甲基丙烯酸甲酯10-30份、丙烯酸丁酯10-30份、丙烯酸羟乙酯10-30份、丙烯酸羟丁酯5-15份、醋酸乙烯酯8-10份、甲基丙烯酸缩水甘油酯0.3-0.9份、丙烯酸十七酯18-20份、光引发剂0.4-0.8份、三丙二醇二丙烯酸酯0.1-0.3份、双季戊四醇六丙烯酸酯0.1-0.3份;
优选的,所述丙烯酸酯聚合物以重量份数计,包括以下组分:丙烯酸0.4份、甲基丙烯酸甲酯20份、丙烯酸丁酯20份、丙烯酸羟乙酯20份、丙烯酸羟丁酯10份、醋酸乙烯酯9份、甲基丙烯酸缩水甘油酯0.6份、丙烯酸十七酯19份、光引发剂0.6份、三丙二醇二丙烯酸酯0.2份、双季戊四醇六丙烯酸酯0.2份;
所述烯酸酯聚合物制备过程如下:
将丙烯酸、甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸羟乙酯、丙烯酸羟丁酯、醋酸乙烯酯、甲基丙烯酸缩水甘油酯、丙烯酸十七酯按比例加入反应釜中搅拌溶解,再加入光引发剂,并给反应釜通入氮气,之后打开UV灯开始聚合反应,粘度符合标准后搅拌均匀出料,以此制成丙烯酸酯预聚物,向预聚物中加入三丙二醇二丙烯酸酯和双季戊四醇六丙烯酸酯交联制成丙烯酸酯聚合物,将丙烯酸酯聚合物涂布在PET基材上,再进行光照固化,最后覆盖PET离型膜制成成品。
所述烯酸酯聚合物制备过程具体包括以下步骤:
步骤一:搅拌溶解形成混合物
将丙烯酸、甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸羟乙酯、丙烯酸羟丁酯、醋酸乙烯酯、甲基丙烯酸缩水甘油酯、丙烯酸十七酯按比例加入反应釜中搅拌溶解,以400-600rpm/min转速搅拌10-60分钟,之后静置30min自然消泡。
步骤二:UV聚合反应制备丙烯酸酯预聚物
向步骤一中获得的混合液体中加入光引发剂,并通入氮气保护,打开UV灯,光照20min左右,能量在200-1200MJ/cm2停止光照,检测粘度是否达到800-1200cps,若未达到,则继续光照直至粘度符合标准,搅拌均匀制成丙烯酸酯预聚物;
步骤三:制作丙烯酸酯聚合物并涂布制成成品
向丙烯酸酯预聚物加入三丙二醇二丙烯酸酯和双季戊四醇六丙烯酸酯制作丙烯酸酯聚合物,接着在PET基材上进行涂布,涂布到所需厚度之后再进行光照,达到4000-8000MJ/cm2后停止光照,在光照固化后的半成品上覆盖PET离型膜制成成品。
步骤四:性能测定
采用GB/T2792—1998标准的剥离强度试验方法和GB/T4851—1998标准的压敏胶粘带持粘性试验方法检测剥离力和保持力,并检测有误溶剂残留,测定结果如图1所示。
在同样的结构条件下,本发明采用UV聚合的丙烯酸酯压敏胶制成的防爆膜,在黏着性,高温保持性能比常规的产品有非常大的提升,并且其无溶剂残留的特征使其具有溶剂型胶粘剂无法比拟的环境友好特性。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。

Claims (6)

1.一种高性能丙烯酸酯防爆膜,其特征在于,所述高性能丙烯酸酯防爆膜包括丙烯酸酯聚合物、PET基材和PET离型膜,所述丙烯酸酯聚合物以重量份数计,包括以下组分:丙烯酸0.2-0.6份、甲基丙烯酸甲酯10-30份、丙烯酸丁酯10-30份、丙烯酸羟乙酯10-30份、丙烯酸羟丁酯5-15份、醋酸乙烯酯8-10份、甲基丙烯酸缩水甘油酯0.3-0.9份、丙烯酸十七酯18-20份、光引发剂0.4-0.8份、三丙二醇二丙烯酸酯0.1-0.3份、双季戊四醇六丙烯酸酯0.1-0.3份。
2.根据权利要求1所述的一种高性能丙烯酸酯防爆膜,其特征在于,所述丙烯酸酯聚合物以重量份数计,包括以下组分:丙烯酸0.4份、甲基丙烯酸甲酯20份、丙烯酸丁酯20份、丙烯酸羟乙酯20份、丙烯酸羟丁酯10份、醋酸乙烯酯9份、甲基丙烯酸缩水甘油酯0.6份、丙烯酸十七酯19份、光引发剂0.6份、三丙二醇二丙烯酸酯0.2份、双季戊四醇六丙烯酸酯0.2份。
3.一种应用于权利要求1所述的丙烯酸酯聚合物制备方法,其特征在于包括以下步骤:
步骤一:搅拌溶解形成混合物;
步骤二:UV聚合反应制备丙烯酸酯预聚物;
步骤三:制作丙烯酸酯聚合物并涂布制成成品;
步骤四:性能测定。
4.根据权利要求3所述的丙烯酸酯聚合物制备方法,其特征在于,所述步骤1中将丙烯酸、甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸羟乙酯、丙烯酸羟丁酯、醋酸乙烯酯、甲基丙烯酸缩水甘油酯、丙烯酸十七酯按比例加入反应釜中搅拌溶解,以400-600rpm/min转速搅拌10-60分钟,之后静置30min自然消泡。
5.根据权利要求3所述的丙烯酸酯聚合物制备方法,其特征在于,所述步骤二是向步骤一中获得的混合液体中加入光引发剂,并通入氮气保护,打开UV灯,光照20min,能量在200-1200MJ/cm2停止光照,检测粘度是否达到800-1200cps,若未达到,则继续光照直至粘度符合标准,搅拌均匀制成丙烯酸酯预聚物。
6.根据权利要求3所述的丙烯酸酯聚合物制备方法,其特征在于,所述步骤三是向丙烯酸酯预聚物加入三丙二醇二丙烯酸酯和双季戊四醇六丙烯酸酯制作丙烯酸酯聚合物,接着在PET基材上进行涂布,涂布到所需厚度之后再进行光照,达到4000-8000MJ/cm2后停止光照,在光照固化后的半成品上覆盖PET离型膜制成成品。
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