CN110079233A - 一种可直接切割的玻璃加工过程保护膜及其制备方法 - Google Patents

一种可直接切割的玻璃加工过程保护膜及其制备方法 Download PDF

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CN110079233A
CN110079233A CN201910437734.9A CN201910437734A CN110079233A CN 110079233 A CN110079233 A CN 110079233A CN 201910437734 A CN201910437734 A CN 201910437734A CN 110079233 A CN110079233 A CN 110079233A
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周荣杰
王益刚
黄伟
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Shenzhen Chang Mao Viscose New Material Co Ltd
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Abstract

本发明提供一种可直接切割的玻璃加工过程保护膜及其制备方法,所述保护膜包括PET薄膜1,胶水层2,光致硬化层3,弹性粘结层4,底纸层5。本发明的可直接切割的玻璃加工过程保护膜,具有较好的保护性能,在玻璃加工过程中能够有效防止碎屑、碎块和微裂缝的产生,可以直接在膜覆盖的基础上进行切割,且不残留。

Description

一种可直接切割的玻璃加工过程保护膜及其制备方法
技术领域
本发明属于膜材料领域,具体涉及一种可直接切割的玻璃加工过程保护膜及其制备方法。
背景技术
传统的覆膜玻璃切割手段中通常采用硬质合金或金刚石刀具,其切割流程具体分为两个步骤:第一步,用金刚石刀尖或硬质合金砂轮使玻璃的表面产生一条裂纹;第二步,采用机械手段将玻璃沿着裂纹线分割开。
然而,采用该方法进行划刻和切割,会导致碎屑、碎块和微裂缝的产生,使切割边沿的强度降低,从而需要再进行一道清理工序。
因此,如何避免切割过程中碎屑、碎块和微裂痕的产生,是本领域技术人员目前需要解决的技术问题。
发明内容
本发明提供一种可直接切割的玻璃加工过程保护膜及其制备方法,具有较好的保护性能,在玻璃加工过程中能够有效防止碎屑、碎块和微裂缝的产生,可以直接在膜覆盖的基础上进行切割,且不残留。
为了实现上述发明目的,本发明采用的技术方案如下:
一种可直接切割的玻璃加工过程保护膜,其特征在于:包括PET薄膜,胶水层,光致硬化层,弹性粘结层,底纸层;所述光致硬化层的原料包括:光起始剂,脂肪族聚氨酯丙烯酸酯寡聚物,丙烯酸环己酯,多醚胺,所述多醚胺的分子量为230;所述弹性粘结层包括:聚乙烯醇,纳米氧化铝,天然乳胶,甲基丙烯酸酯共聚物;所述聚乙烯醇,氧化铝颗粒,天然乳胶同时满足:聚乙烯醇分子量11万-13万,氧化铝颗粒的粒径200-500nm,天然乳胶的粘度为30-40mPa·s。
进一步地,所述胶水层的原料包括丙烯酸压敏胶。
进一步地,所述光致硬化层的原料按质量份包括:0.01-0.05份的光起始剂,100-120份的脂肪族聚氨酯丙烯酸酯寡聚物,30-40份的丙烯酸环己酯,10-20份的多醚胺。
进一步地,所述弹性粘结层的原料按质量份包括:10-20份的聚乙烯醇,1-2份的纳米氧化铝,10-20份的天然乳胶,10-20份的甲基丙烯酸酯共聚物。
进一步地,所述PET薄膜的厚度为20um。
进一步地,所述胶水层的厚度为5um。
进一步地,所述光致硬化层的厚度为20um。
进一步地,所述弹性粘结层的厚度为10um。
一种可直接切割的玻璃加工过程保护膜的制备方法,其特征在于包括如下步骤:
(1)在PET薄膜的表面涂布一层胶水形成胶水层,将脂肪族聚氨酯丙烯酸酯寡聚物,丙烯酸环己酯,多醚胺,溶剂倒入搅拌器中,在加入光起始剂充分搅拌20分钟进行分散,通过刮涂的方式涂布在胶水层上,无光烘干后形成光致硬化层,备用;
(2)将聚乙烯醇,纳米氧化铝,天然乳胶,甲基丙烯酸酯共聚物在高速搅拌机中,充分搅拌6-8小时后,涂布在光致硬化层上形成弹性粘结层,贴合底纸即可。
本发明的有益效果在于:
(1)通过PET薄膜,胶水层,光致硬化层,弹性粘结层这种保护膜的结构设置,实现了在保护膜贴合的情况下,可以直接进行切割加工,切割过程中不会产生微裂纹。
(2)在光致硬化层材料中添加中多醚胺,实现了更快的硬化和更好的硬化强度,并且具有良好的破碎完整性,并且在切割时,该硬化层的设置可以使玻璃刀不会发生偏移,从而保证切割精度和没有微裂纹的产生。
(3)在硬化层之下设置有弹性粘结层,通过该层对玻璃的整体性进行保护,其中聚乙烯醇,氧化铝颗粒,天然乳胶同时满足:聚乙烯醇分子量11万-13万,氧化铝颗粒的粒径200-500nm,天然乳胶的粘度为30-40mPa·s,当三者满足上述条件时,推测是合适的分子量的聚乙烯醇与相应的粒径的氧化炉和天然乳胶的橡胶微粒子以及其他的天然乳胶中的一些组分形成微结构,可以使弹性粘结层的弹性,粘结性和切割平整度得到平衡保证,在切割过程中保证边缘的破裂,同时该弹性粘结层在去除时不会在表面产生残留。
附图说明
图1为本发明的可直接切割的玻璃加工过程保护膜的结构示意图。
具体实施方式
下面结合具体实施例,进一步阐述本发明。应理解,这些实施例仅用于说明本发明,而不用于限制本发明的范围。在不背离本发明的技术解决方案的前提下,对本发明所作的本领域普通技术人员容易实现的任何改动都将落入本发明的权利要求范围之内。
实施例1
一种可直接切割的玻璃加工过程保护膜的制备方法,包括以下步骤:
(1)在20um PET薄膜1的表面涂布一层丙烯酸压敏胶形成5um的胶水层2,将110份的脂肪族聚氨酯丙烯酸酯寡聚物,35份的丙烯酸环己酯,15份的多醚胺,350份的乙醇倒入搅拌器中,在加入0.03份的光起始剂,充分搅拌20分钟进行分散,通过刮涂的方式涂布在胶水层2上,无光烘干后形成20um的光致硬化层3,备用;所述多醚胺的分子量为230;
(2)将15份的聚乙烯醇,1.5份的纳米氧化铝,15份的天然乳胶,15份的甲基丙烯酸酯共聚物在高速搅拌机中,充分搅拌7小时后,涂布在光致硬化层3上形成10um的弹性粘结层4,贴合底纸层5即可;所述聚乙烯醇,氧化铝颗粒,天然乳胶同时满足:聚乙烯醇分子量11万-13万,氧化铝颗粒的粒径200-500nm,天然乳胶的粘度为30-40mPa·s。
实施例2
一种可直接切割的玻璃加工过程保护膜的制备方法,包括以下步骤:
(1)在20um PET薄膜1的表面涂布一层丙烯酸压敏胶形成5um的胶水层2,将100份的脂肪族聚氨酯丙烯酸酯寡聚物,40份的丙烯酸环己酯,10份的多醚胺,400份的乙醇倒入搅拌器中,在加入0.01份的光起始剂,充分搅拌20分钟进行分散,通过刮涂的方式涂布在胶水层2上,无光烘干后形成20um的光致硬化层3,备用;所述多醚胺的分子量为230;
(3)将20份的聚乙烯醇,1份的纳米氧化铝,20份的天然乳胶,10份的甲基丙烯酸酯共聚物在高速搅拌机中,充分搅拌8小时后,涂布在光致硬化层上形成10um的弹性粘结层4,贴合底纸层5即可;所述聚乙烯醇,氧化铝颗粒,天然乳胶同时满足:聚乙烯醇分子量11万-13万,氧化铝颗粒的粒径200-500nm,天然乳胶的粘度为30-40mPa·s。
实施例3
一种可直接切割的玻璃加工过程保护膜的制备方法,包括以下步骤:
(1)在20um PET薄膜1的表面涂布一层丙烯酸压敏胶形成5um的胶水层2,将120份的脂肪族聚氨酯丙烯酸酯寡聚物,30份的丙烯酸环己酯,20份的多醚胺,300份的乙醇倒入搅拌器中,在加入0.05份的光起始剂,充分搅拌20分钟进行分散,通过刮涂的方式涂布在胶水层上,无光烘干后形成20um的光致硬化层3,备用;所述多醚胺的分子量为230;
(3)将10份的聚乙烯醇,2份的纳米氧化铝,10份的天然乳胶,20份的甲基丙烯酸酯共聚物在高速搅拌机中,充分搅拌6小时后,涂布在光致硬化层3上形成10um的弹性粘结层4,贴合底纸层5即可;所述聚乙烯醇,氧化铝颗粒,天然乳胶同时满足:聚乙烯醇分子量11万-13万,氧化铝颗粒的粒径200-500nm,天然乳胶的粘度为30-40mPa·s。
对比例1
与实施例1相同,除了不设置光致硬化层3。
对比例2
与实施例1相同,除了弹性粘结层4,不添加聚乙烯醇,天然乳胶,氧化铝颗粒。
对比例3
与实施例1相同,除了光致硬化层3不加入多醚胺。
对比例4
与实施例1相同,除了所述聚乙烯醇分子量9万。
对比例5
与实施例1相同,除了所述天然乳胶的粘度为10-20mPa·s。
对比例6
与实施例1相同,除了所述氧化铝颗粒的粒径1-5um。
将实施例和对比例的产品,使用2kg压力辊轮按30cm/分钟的速度匀速的将被测试样品条滚压粘贴于相同的玻璃上,保证贴合平整无气泡,用UV光照射20min后,在常温下放置至少4小时以上,进行残留性测试,切割完整性测试。
残留性的测试方法:
以300cm/分钟的速度快速的将被测试样品条玻璃表面剥离,肉眼观察是否胶水残留在玻璃表面表面。
切割完整性测试
使用金刚石进行切割后,用显微镜观察切口处的微裂纹大小,进行评级,1级为微裂纹很少且比较浅,无碎屑产生,2级为微裂纹数量中等且比较浅,少量碎屑产生,3级为微裂纹密集且很深,肉眼可见的碎屑产生。通过5次切割,进行统计结果。
表1

Claims (9)

1.一种可直接切割的玻璃加工过程保护膜,其特征在于:从上到下包括PET薄膜(1),胶水层(2),光致硬化层(3),弹性粘结层(4),底纸层(5);所述光致硬化层(3)的原料包括:光起始剂,脂肪族聚氨酯丙烯酸酯寡聚物,丙烯酸环己酯,多醚胺,所述多醚胺的分子量为230;所述弹性粘结层(4)包括:聚乙烯醇,纳米氧化铝,天然乳胶,甲基丙烯酸酯共聚物;所述聚乙烯醇,氧化铝颗粒,天然乳胶同时满足:聚乙烯醇分子量11万-13万,氧化铝颗粒的粒径200-500nm,天然乳胶的粘度为30-40mPa·s。
2.根据权利要求1所述的可直接切割的玻璃加工过程保护膜,其特征在于:所述胶水层(2)的原料包括丙烯酸压敏胶。
3.根据权利要求1所述的可直接切割的玻璃加工过程保护膜,其特征在于:所述光致硬化层(3)的原料按质量份包括:0.01-0.05份的光起始剂,100-120份的脂肪族聚氨酯丙烯酸酯寡聚物,30-40份的丙烯酸环己酯,10-20份的多醚胺。
4.根据权利要求1所述的可直接切割的玻璃加工过程保护膜,其特征在于:所述弹性粘结层(4)的原料按质量份包括:10-20份的聚乙烯醇,1-2份的纳米氧化铝,10-20份的天然乳胶,10-20份的甲基丙烯酸酯共聚物。
5.根据权利要求1所述的可直接切割的玻璃加工过程保护膜,其特征在于:所述PET薄膜(1)的厚度为20um。
6.根据权利要求1所述的可直接切割的玻璃加工过程保护膜,其特征在于:所述胶水层(2)的厚度为5um。
7.根据权利要求1所述的可直接切割的玻璃加工过程保护膜,其特征在于:所述光致硬化层(3)的厚度为20um。
8.根据权利要求1所述的可直接切割的玻璃加工过程保护膜,其特征在于:所述弹性粘结层(4)的厚度为10um。
9.一种可直接切割的玻璃加工过程保护膜的制备方法,其特征在于包括如下步骤:
(1)在PET薄膜(1)的表面涂布一层胶水形成胶水层(2),将脂肪族聚氨酯丙烯酸酯寡聚物,丙烯酸环己酯,多醚胺,溶剂倒入搅拌器中,在加入光起始剂充分搅拌20分钟进行分散,通过刮涂的方式涂布在胶水层上,无光烘干后形成光致硬化层(3),备用;
(2)将聚乙烯醇,纳米氧化铝,天然乳胶,甲基丙烯酸酯共聚物在高速搅拌机中,充分搅拌6-8小时后,涂布在光致硬化层(3)上形成弹性粘结层(4),贴合底纸即可。
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