CN110922858A - 环保乳液型低转移耐高温保护膜 - Google Patents

环保乳液型低转移耐高温保护膜 Download PDF

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CN110922858A
CN110922858A CN201911216120.4A CN201911216120A CN110922858A CN 110922858 A CN110922858 A CN 110922858A CN 201911216120 A CN201911216120 A CN 201911216120A CN 110922858 A CN110922858 A CN 110922858A
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叶爱磊
王磊
戴玮洁
韩仲友
谈纪金
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Suzhou Tai Lun Electronic Materials Co Ltd
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Abstract

本发明公开了一种环保乳液型低转移耐高温保护膜，包括基材层和涂覆在所述基材上的剥离层，所述剥离层以重量计份包括如下成分：硅氧烷改性的环氧乳液80‑95份；固化剂3‑6份；乳化剂1‑4份；交联剂1‑4份；分散剂1‑2份；助剂0.1‑0.5份。本发明通过优化配方的方法，一方面实现了保护膜环保、无污染的有益效果，另外一方面，改善了保护膜耐高温的性能，使其在高温条件下仍然能保持其化学稳定性。

Description

环保乳液型低转移耐高温保护膜
技术领域
本发明涉及保护膜领域，特别涉及一种环保乳液型低转移耐高温保护膜。
背景技术
保护膜是一种用于金属产品表面、涂层金属产品表面、塑料产品表面、汽车产品表面、电子产品表面、标牌产品表面、型材产品表面、及其它产品表面的一层膜。按照材质分类，可以分为PP材质、PVC材质、PET材质等，但是普遍存在使用寿命短、材质容易随着温度升高改变以及污染环境等缺点。乳液型丙烯酸酯类保护膜采用环保型材料，可以满足市场上高标准的环保要求，另外，乳液型丙烯酸酯类保护膜剥离力小，可快速撕膜，可弥补橡胶系保护膜的缺陷。
发明内容
本发明所要解决的技术问题在于针对上述现有技术中的不足，提供一种环保乳液型低转移耐高温保护膜。
为解决上述技术问题，本发明采用的技术方案是：一种环保乳液型低转移耐高温保护膜，包括基材层和涂覆在所述基材上的剥离层，所述剥离层以重量计份包括如下成分：
Figure BDA0002299562240000011
优选的是，其中，所述硅氧烷改性的环氧乳液的制备方法如下：将硅氧烷与环氧乳液按照一定的比例共混，采用强力搅拌器搅拌30min，然后加入环氧乳化剂，搅拌均匀后滴加一定量的去离子水，同时开启高剪切分散乳化剂，使形成的乳液分散均匀，待去离子水滴加完毕，再快速搅拌30min，制得所述硅氧烷改性的环氧乳液。
优选的是，其中，所述固化剂为复合固化剂，所述复合固化剂包括环氧有机硅固化剂和异氰酯固化剂。
优选的是，其中，所述环氧有机硅固化剂包括酰胺固化环氧树脂、酚醛固化环氧树脂、酸酐固化环氧树脂中的至少一种，所述异氰酸酯固化剂包括脂肪族聚异氰酸酯、封闭型聚异氰酸酯、水溶性聚异氰酸酯中的至少一种。
优选的是，其中，所述乳化剂为复合乳化剂，所述复合乳化剂为阴离子乳化剂和非离子型乳化剂。
优选的是，其中，所述剥离层与基材层之间还设有低转移层，所述低转移层以重量计份包括如下成分：
Figure BDA0002299562240000021
优选的是，其中，所述乙烯-四氟乙烯-甲基丙烯酸六氟单酯共聚物制备方法为：在真空条件下向高压釜中加入100-150重量份的有机溶剂和150-200重量份的甲基丙烯酸六氟单酯，再加入40-60重量份的四氟乙烯，同时搅拌升温至60-70℃，再导入25-30重量份的乙烯单体，调节聚合压力为0.8-2.2MPa后加入3-5重量份的引发剂叔丁基过氧化氢，保温3-4h后降温过滤得到乙烯-四氟乙烯-甲基丙烯酸六氟单酯共聚物。
优选的是，其中，所述组合助剂为碳纤维与无机纳米粒子的混合物。
优选的是，其中，所述分散剂包括丙酮、正丁醇、环己酮、苯乙烯中的至少一种。
优选的是，其中，所述环保乳液型低转移耐高温保护膜的制备方法如下：将所制备的转移层、剥离层依次涂布在基材上即制得所述环保乳液型低转移耐高温保护膜。
本发明的有益效果是：本发明通过优化剥离层的配方，通过引入硅氧烷改性的环氧乳改善保护膜转移性能，减少剥离时在被保护实体表面遗留的残胶问题；另外通过设置转移膜提高保护膜材料光的耐热性能，本发明结构简单，制备方便，环保无污染，耐高温型好。
具体实施方式
下面结合实施例对本发明做进一步的详细说明，以令本领域技术人员参照说明书文字能够据以实施。
应当理解，本文所使用的诸如“具有”、“包含”以及“包括”术语并不排除一个或多个其它元件或其组合的存在或添加。
实施例一
一种环保乳液型低转移耐高温保护膜，包括基材层和涂覆在所述基材上的剥离层，所述剥离层以重量计份包括如下成分：
Figure BDA0002299562240000031
进一步的，所述硅氧烷改性的环氧乳液的制备方法如下：将硅氧烷与环氧乳液按照一定的比例共混，采用强力搅拌器搅拌30min，然后加入环氧乳化剂，搅拌均匀后滴加一定量的去离子水，同时开启高剪切分散乳化剂，使形成的乳液分散均匀，待去离子水滴加完毕，再快速搅拌30min，制得所述硅氧烷改性的环氧乳液。
进一步的，所述固化剂为复合固化剂，所述复合固化剂包括环氧有机硅固化剂和异氰酯固化剂。
进一步的，所述环氧有机硅固化剂为酰胺固化环氧树脂，所述异氰酸酯固化剂为脂肪族聚异氰酸酯。
进一步的，所述乳化剂为复合乳化剂，所述复合乳化剂为阴离子乳化剂和非离子型乳化剂。
进一步的，所述剥离层与基材层之间还设有低转移层，所述低转移层以重量计份包括如下成分：
Figure BDA0002299562240000041
进一步的，所述乙烯-四氟乙烯-甲基丙烯酸六氟单酯共聚物制备方法为：在真空条件下向高压釜中加入100-150重量份的有机溶剂和150-200重量份的甲基丙烯酸六氟单酯，再加入40-60重量份的四氟乙烯，同时搅拌升温至60-70℃，再导入25-30重量份的乙烯单体，调节聚合压力为0.8-2.2MPa后加入3-5重量份的引发剂叔丁基过氧化氢，保温3-4h后降温过滤得到乙烯-四氟乙烯-甲基丙烯酸六氟单酯共聚物。
进一步的，所述组合助剂为碳纤维与无机纳米粒子的混合物。
进一步的，所述分散剂为丙酮。
进一步的，所述环保乳液型低转移耐高温保护膜的制备方法如下：将所制备的转移层、剥离层依次涂布在基材上即制得所述环保乳液型低转移耐高温保护膜。
实施例二
一种环保乳液型低转移耐高温保护膜，包括基材层和涂覆在所述基材上的剥离层，所述剥离层以重量计份包括如下成分：
Figure BDA0002299562240000042
Figure BDA0002299562240000051
进一步的，所述硅氧烷改性的环氧乳液的制备方法如下：将硅氧烷与环氧乳液按照一定的比例共混，采用强力搅拌器搅拌30min，然后加入环氧乳化剂，搅拌均匀后滴加一定量的去离子水，同时开启高剪切分散乳化剂，使形成的乳液分散均匀，待去离子水滴加完毕，再快速搅拌30min，制得所述硅氧烷改性的环氧乳液。
进一步的，所述固化剂为复合固化剂，所述复合固化剂包括环氧有机硅固化剂和异氰酯固化剂。
进一步的，所述环氧有机硅固化剂为酚醛固化环氧树脂，所述异氰酸酯固化剂为水溶性聚异氰酸酯。
进一步的，所述乳化剂为复合乳化剂，所述复合乳化剂为阴离子乳化剂和非离子型乳化剂。
进一步的，所述剥离层与基材层之间还设有低转移层，所述低转移层以重量计份包括如下成分：
Figure BDA0002299562240000052
进一步的，所述乙烯-四氟乙烯-甲基丙烯酸六氟单酯共聚物制备方法为：在真空条件下向高压釜中加入100-150重量份的有机溶剂和150-200重量份的甲基丙烯酸六氟单酯，再加入40-60重量份的四氟乙烯，同时搅拌升温至60-70℃，再导入25-30重量份的乙烯单体，调节聚合压力为0.8-2.2MPa后加入3-5重量份的引发剂叔丁基过氧化氢，保温3-4h后降温过滤得到乙烯-四氟乙烯-甲基丙烯酸六氟单酯共聚物。
进一步的，所述组合助剂为碳纤维与无机纳米粒子的混合物。
进一步的，所述分散剂为正丁醇。
进一步的，所述环保乳液型低转移耐高温保护膜的制备方法如下：将所制备的转移层、剥离层依次涂布在基材上即制得所述环保乳液型低转移耐高温保护膜。
实施例三
本实施例与实施例一的原料和工艺基本相同，唯一不同之处在于，将复合固化剂改为酚醛固化环氧树脂与封闭型聚异氰酸酯的混合物。
实施例四
本实施例与实施例二的原料和工艺基本相同，唯一不同之处在于，将分散剂改为环己酮与丙酮的混合物。
对比例一
本对比例与实施例一的原料和工艺基本相同，唯一不同之处在于，将硅氧烷改性的环氧乳液改为单一的环氧乳液。
对比例二
本对比例与实施例二的原料和工艺基本相同，唯一不同之处在于，将复合固化剂改为单一的环氧有机硅固化剂或单一的异氰酯固化剂。
以上实施例1-4以及对比例1-2的产品性能测试结果如下:
初黏性(cm) 持黏性(h) 乳液粒径(nm) 导热系数(W/m.k)
实施例一 3.85 8.4 ＜120 0.45
实施例二 3.47 7.9 ＜120 0.47
实施例三 3.56 8.1 ＜120 0.39
实施例四 3.69 8.7 ＜120 0.38
对比例一 2.15 6.9 ＞150 0.29
对比例二 2.36 5.3 ＞150 0.26
其中，初黏性：采用斜面滚球法进行测试。
持黏性：按照GB 4851-84标准进行测试。
导热系数：按照GB 10294标准进行测试。
实施例一与对比例一相比，实施例一的乳液粒径＜120nm，而对比例一的乳液粒径＞150nm，这表明硅氧烷改性的环氧乳液有助于提高乳液的稳定性，有机硅氧烷的引入，由于水解缩合，聚合物交联密度相应提高，聚合物分子链间难以被水分子溶胀，水分子难以渗透，使得吸水率降低，由于硅氧烷链段水分子间存在亲水的Si-OH,使得涂层与无机底层之间粘接力增加，附着力提高，有机硅链段具有较好的低温柔韧性，使得改性后环氧树脂的分散性不好这一缺点可以得到很好的解决，从而提高保护膜的稳定性以及附着力。
实施例二与对比例二相比，实施例二的保护膜的导热系数为0.47W/m.k，而对比例二的导热系数为0.26W/m.k，这表明复合固化剂的添加显著改善了保护膜的耐高温性能。复合固化剂中环氧基与氰酯基充当稀释剂，降低了大分子之间的碰撞几率，另一方面，环氧基与氰酯基之间的共缩聚反应在一定程度上延缓了酯环活性提高，受辐射后可发生交联、断链、形成不饱和基团，从而提高保护膜的耐高温性能。
尽管本发明的实施方案已公开如上，但其并不仅仅限于说明书和实施方式中所列运用，它完全可以被适用于各种适合本发明的领域，对于熟悉本领域的人员而言，可容易地实现另外的修改，因此在不背离权利要求及等同范围所限定的一般概念下，本发明并不限于特定的细节。

Claims (10)

1.一种环保乳液型低转移耐高温保护膜，其特征在于，包括基材层和涂覆在所述基材上的剥离层，所述剥离层以重量计份包括如下成分：
Figure FDA0002299562230000011
2.根据权利要求1所述的环保乳液型低转移耐高温保护膜，其特征在于，所述硅氧烷改性的环氧乳液的制备方法如下：将硅氧烷与环氧乳液按照一定的比例共混，采用强力搅拌器搅拌30min，然后加入环氧乳化剂，搅拌均匀后滴加一定量的去离子水，同时开启高剪切分散乳化剂，使形成的乳液分散均匀，待去离子水滴加完毕，再快速搅拌30min，制得所述硅氧烷改性的环氧乳液。
3.根据权利要求1所述的环保乳液型低转移耐高温保护膜，其特征在于，所述固化剂为复合固化剂，所述复合固化剂包括环氧有机硅固化剂和异氰酯固化剂。
4.根据权利要求3所述的环保乳液型低转移耐高温保护膜，其特征在于，所述环氧有机硅固化剂包括酰胺固化环氧树脂、酚醛固化环氧树脂、酸酐固化环氧树脂中的至少一种，所述异氰酸酯固化剂包括脂肪族聚异氰酸酯、封闭型聚异氰酸酯、水溶性聚异氰酸酯中的至少一种。
5.根据权利要求1所述的环保乳液型低转移耐高温保护膜，其特征在于，所述乳化剂为复合乳化剂，所述复合乳化剂为阴离子乳化剂和非离子型乳化剂。
6.根据权利要求1所述的环保乳液型低转移耐高温保护膜，其特征在于，所述剥离层与基材层之间还设有低转移层，所述低转移层以重量计份包括如下成分：
Figure FDA0002299562230000021
7.根据权利要求6所述的环保乳液型低转移耐高温保护膜，其特征在于，所述乙烯-四氟乙烯-甲基丙烯酸六氟单酯共聚物制备方法为：在真空条件下向高压釜中加入100-150重量份的有机溶剂和150-200重量份的甲基丙烯酸六氟单酯，再加入40-60重量份的四氟乙烯，同时搅拌升温至60-70℃，再导入25-30重量份的乙烯单体，调节聚合压力为0.8-2.2MPa后加入3-5重量份的引发剂叔丁基过氧化氢，保温3-4h后降温过滤得到乙烯-四氟乙烯-甲基丙烯酸六氟单酯共聚物。
8.根据权利要求7所述的环保乳液型低转移耐高温保护膜，其特征在于，所述组合助剂为碳纤维与无机纳米粒子的混合物。
9.根据权利要求1所述的环保乳液型低转移耐高温保护膜，其特征在于，所述分散剂包括丙酮、正丁醇、环己酮、苯乙烯中的至少一种。
10.根据权利要求1-9任意一项所述的环保乳液型低转移耐高温保护膜，其特征在于，所述环保乳液型低转移耐高温保护膜的制备方法如下：将所制备的转移层、剥离层依次涂布在基材上即制得所述环保乳液型低转移耐高温保护膜。
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