CN108034384A - 一种可转移耐温阻燃屏蔽层薄膜及其制备方法 - Google Patents

一种可转移耐温阻燃屏蔽层薄膜及其制备方法 Download PDF

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CN108034384A
CN108034384A CN201810094283.9A CN201810094283A CN108034384A CN 108034384 A CN108034384 A CN 108034384A CN 201810094283 A CN201810094283 A CN 201810094283A CN 108034384 A CN108034384 A CN 108034384A
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曹慧芬
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Abstract

本发明涉及一种可转移耐温阻燃屏蔽层薄膜，包括自下而上依次复合的基材层(1)、UV树脂涂料层(2)、屏蔽层(3)、胶黏剂层(4)；所述基材层(1)采用PET、PC、PP材料薄膜，所述基材层(1)的厚度为20‑100um；本发明同现有技术相比，通过UV涂层与水性树脂结合力不好的现状，将屏蔽结构层构建在一起，剥离后整体厚度薄，而剥离的UV涂层与基材可以实现转移彻底，薄膜还可以回收。含有该屏蔽层薄膜可以通过胶粘剂将屏蔽层转移至金属片材，金属片材将具有各种屏蔽性能，且表观根据需求可做亮光或哑光或者各种需要的纹路。该屏蔽层还具有一定的耐温性。

Description

一种可转移耐温阻燃屏蔽层薄膜及其制备方法
[技术领域]
本发明涉及屏蔽层薄膜技术领域，具体地说是一种可转移耐温阻燃屏蔽层薄膜及其制备方法。
[背景技术]
目前，现有的屏蔽膜层结构复杂，例如专利201420156859.7采用的是多层结构工艺复杂，通过加设阻燃和耐温层使屏蔽层具有耐温阻燃性能，成本增高。
市场上现有的产品耐温阻燃系列薄膜大多采用多层组合式耐温、阻燃结构，工艺繁琐、成本过高，且基材不能进行有效转移，降低该系列薄膜的应用领域。
[发明内容]
本发明的目的就是要解决上述的不足而提供一种可转移耐温阻燃屏蔽层薄膜及其制备方法。解决了现有屏蔽薄膜多层结构、工艺复杂的问题，可以通过转移使基材层进行多次利用降低成本，实现了基层薄膜材料的回收性能。该薄膜制作工艺简单，减少了多层工艺叠加所耗过多的问题。
为实现上述目的设计一种可转移耐温阻燃屏蔽层薄，包括自下而上依次复合的基材层1、UV树脂涂料层2、屏蔽层3、胶黏剂层4。
所述基材层1采用PET、PC、PP材料薄膜，所述基材层1的厚度为20-100um。
所述UV树脂涂料层2的厚度为3-20um，所述屏蔽层的厚度3-20um，所述胶黏剂层4的厚度为2-20u。
一种可转移耐温阻燃屏蔽层薄的制备方法，包括以下步骤：
(1)选用基材层厚度20-100um；
(2)在基材层上表面涂布一层UV树脂涂料层，厚度3-20um；
(3)UV树脂涂料层通过固化后，在UV树脂涂料层上表面涂布一层屏蔽层；所述屏蔽层包括按重量百分比的组分：耐温水性树脂60％-86％、阻燃剂3％-20％、水性黑色浆10％-30％、金属粉末0.1％-10％、流平剂0.1％-1％、分散剂0.1％-2％及消泡剂0.1％-1％，所述屏蔽层的厚度3-20um；
(4)最后，在屏蔽层上表面涂布胶黏剂层，胶黏剂层的厚度2-20um，即得可转移耐温阻燃屏蔽层薄。
所述步骤(1)中，基材层采用PET、PC、PP材料薄膜。
所述步骤(2)中，UV树脂涂料层采用丙烯酸预聚物型转移或复合型。
所述步骤(3)中，屏蔽层的组分搅拌时间0.5-3h，室温25℃，粘度15-40S，耐温水性树脂采用水性有机硅改性丙烯酸耐高温树脂、水性有机硅聚氨酯树脂或水性氟硅树脂。
所述步骤(4)中，胶黏剂层采用热固性胶黏剂，主体结构为环氧树脂、酚醛树脂、改性的酚醛树脂或水性耐温树脂。
所述步骤(2)、(3)中，UV树脂层和屏蔽层的涂布方式采用刮涂、者辊涂或者丝网。
本发明同现有技术相比，通过UV涂层与水性树脂结合力不好的现状，将屏蔽结构层构建在一起，剥离后整体厚度薄，而剥离的UV涂层与基材可以实现转移彻底，薄膜还可以回收。含有该屏蔽层薄膜可以通过胶粘剂将屏蔽层转移至金属片材，金属片材将具有各种屏蔽性能，且表观根据需求可做亮光或哑光或者各种需要的纹路。该屏蔽层还具有一定的耐温性。
[附图说明]
图1是本发明的断面结构示意图；
图中：1、基材层，2、UV树脂涂料层，3、屏蔽层，4、胶黏剂层。
[具体实施方式]
如附图1所示，本发明的制备方法，包括以下步骤：
(1)选用的基材是PET聚酯薄膜，厚度20-100um；
(2)在上述的基材上表面涂布一层UV树脂涂料，因为水性树脂与UV结合力不强，所以UV树脂涂料的选型可以多样化，可以是丙烯酸预聚物型转移或复合型；厚度3-20um；表观可根据客户需求做成亮光或哑光或者做上各种需要的纹路；
(3)UV树脂涂料层通过固化后，在上述所述的UV树脂涂料层上表面再涂布一层屏蔽层；该屏蔽层是由耐温水性树脂60％-86％、阻燃剂3％-20％、水性黑色浆10％-30％、金属粉末0.1％-10％、流平剂0.1％-1％、分散剂0.1％-2％、消泡剂0.1％-1％按配比配置而成，搅拌时间0.5-3h，室温25℃粘度15-40S；耐温水性树脂可以采用水性有机硅改性丙烯酸耐高温树脂、水性有机硅聚氨酯树脂、水性氟硅树脂等水性耐高温系列树脂；屏蔽层厚度3-20um；该耐温树脂一般耐温可以达到150℃以上。
(4)最后涂布一层胶黏剂，该胶黏剂可以为热固性胶黏剂，主体结构可以是环氧树脂、酚醛树脂、改性的酚醛树脂，也可以是水性耐温树脂胶黏剂；厚度2-20um；
基材可以是PET、PC、PP材料；UV树脂层和屏蔽层的涂布方式可以用刮涂或者辊涂(100-250线)或者丝网等，涂布胶粘剂后，可将屏蔽层转移到承接材料上，如铝箔、铜箔、锡箔、复合金属材料等；因为UV树脂涂层与水性屏蔽层无链接反应，可完全剥离，且剥离后PET薄膜可回收，回收回来的基材只需要涂布一层屏蔽层(依客户情况涂布胶黏剂)反复使用，建议回收次数2-6次，从而可以节约成本。
本发明并不受上述实施方式的限制，其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。

Claims (9)

1.一种可转移耐温阻燃屏蔽层薄膜，其特征在于：包括自下而上依次复合的基材层(1)、UV树脂涂料层(2)、屏蔽层(3)、胶黏剂层(4)。
2.如权利要求1所述的可转移耐温阻燃屏蔽层薄膜，其特征在于：所述基材层(1)采用PET、PC、PP材料薄膜，所述基材层(1)的厚度为20-100um。
3.如权利要求1或2所述的可转移耐温阻燃屏蔽层薄膜，其特征在于：所述UV树脂涂料层(2)的厚度为3-20um，所述屏蔽层的厚度3-20um，所述胶黏剂层(4)的厚度为2-20u。
4.一种可转移耐温阻燃屏蔽层薄膜的制备方法，其特征在于，包括以下步骤：
(1)选用基材层厚度20-100um；
(2)在基材层上表面涂布一层UV树脂涂料层，厚度3-20um；
(3)UV树脂涂料层通过固化后，在UV树脂涂料层上表面涂布一层屏蔽层；所述屏蔽层包括按重量百分比的组分：耐温水性树脂60％-86％、阻燃剂3％-20％、水性黑色浆10％-30％、金属粉末0.1％-10％、流平剂0.1％-1％、分散剂0.1％-2％及消泡剂0.1％-1％，所述屏蔽层的厚度3-20um；
(4)最后，在屏蔽层上表面涂布胶黏剂层，胶黏剂层的厚度2-20um，即得可转移耐温阻燃屏蔽层薄。
5.如权利要求4所述的制备方法，其特征在于，所述步骤(1)中，基材层采用PET、PC、PP材料薄膜。
6.如权利要求4所述的制备方法，其特征在于，所述步骤(2)中，UV树脂涂料层采用丙烯酸预聚物型转移或复合型。
7.如权利要求4所述的制备方法，其特征在于，所述步骤(3)中，屏蔽层的组分搅拌时间0.5-3h，室温25℃，粘度15-40S，耐温水性树脂采用水性有机硅改性丙烯酸耐高温树脂、水性有机硅聚氨酯树脂或水性氟硅树脂。
8.如权利要求4所述的制备方法，其特征在于，所述步骤(4)中，胶黏剂层采用热固性胶黏剂，主体结构为环氧树脂、酚醛树脂、改性的酚醛树脂或水性耐温树脂。
9.如权利要求4所述的制备方法，其特征在于，所述步骤(2)、(3)中，UV树脂层和屏蔽层的涂布方式采用刮涂、者辊涂或者丝网。
CN201810094283.9A 2018-01-31 2018-01-31 一种可转移耐温阻燃屏蔽层薄膜及其制备方法 Pending CN108034384A (zh)

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