CN111941975A - 一种高阻氧万向抗撕裂薄膜及其制备方法 - Google Patents

一种高阻氧万向抗撕裂薄膜及其制备方法 Download PDF

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CN111941975A
CN111941975A CN202010963443.6A CN202010963443A CN111941975A CN 111941975 A CN111941975 A CN 111941975A CN 202010963443 A CN202010963443 A CN 202010963443A CN 111941975 A CN111941975 A CN 111941975A
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density polyethylene
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杨小亮
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JINGZHOU YUSHI PLASTIC INDUSTRY Co.,Ltd.
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Abstract

本发明公开了一种高阻氧万向抗撕裂薄膜，包括从上到下依次设置的20°高密度聚乙烯片膜层、第一粘合层、36°高密度聚乙烯片膜层、第二粘合层、54°高密度聚乙烯片膜层、第三粘合层、70°高密度聚乙烯片膜层、底胶预涂层以及聚偏二氯乙烯涂布层；通过不同横纵角的高密度聚乙烯片膜层交叉复合，实现360°抗撕裂以及达到横纵向一致的力学性能；并且高阻氧万向抗撕裂薄膜具有良好的阻氧和阻气性能，减少沥青基防水卷材中油脂的挥发。

Description

一种高阻氧万向抗撕裂薄膜及其制备方法
技术领域
本发明属于沥青基防水卷材所用交叉膜技术领域，具体涉及一种高阻氧万向抗撕裂薄膜及其制备方法。
背景技术
目前国内的强力交叉膜，都只是通过45°交叉复合，来保证横纵向一致且达到较高的抗撕裂性能，但是还是无法达到360°抗撕裂和横纵向一致的力学性能，其次目前国内的交叉膜基本都是以聚乙烯或聚丙烯为原材料，这类的材料，阻氧和阻气的性能都很差，当这类的交叉膜应用于沥青基防水卷材后，应用在沥青基防水卷材上，会因为沥青基防水卷材内的油脂成分往外挥发和渗透而发生变色和加速氧化，大大影响外观和加快沥青基防水卷材中活性成分的流失。
发明内容
为了解决现有技术存在的上述问题，本发明提供了一种高阻氧万向抗撕裂薄膜。
本发明所采用的技术方案为：一种高阻氧万向抗撕裂薄膜，包括从上到下依次设置的20°高密度聚乙烯片膜层、第一粘合层、36°高密度聚乙烯片膜层、第二粘合层、54°高密度聚乙烯片膜层、第三粘合层、70°高密度聚乙烯片膜层、底胶预涂层以及聚偏二氯乙烯涂布层。
进一步限定，所述高密度聚乙烯片膜层的厚度为0.023mm。
进一步限定，所述20°高密度聚乙烯片膜层、36°高密度聚乙烯片膜层、54°高密度聚乙烯片膜层以及70°高密度聚乙烯片膜层均是由分别对应螺旋切割工艺制备得到。
进一步限定，底胶预涂层为AC底胶预涂层。
有益效果为：通过不同横纵角的高密度聚乙烯片膜层交叉复合，实现360°抗撕裂以及达到横纵向一致的力学性能；并且高阻氧万向抗撕裂薄膜具有良好的阻氧和阻气性能，减少沥青基防水卷材中油脂的挥发。
本发明还公开了一种高阻氧万向抗撕裂薄膜的制备方法，包括以下步骤：
S1：制备宽度不同的四种高密度聚乙烯管状薄膜；
S2：取向拉伸四种高密度聚乙烯管状薄膜；
S3：对步骤S2制备得到的四种高密度聚乙烯管状薄膜进行退火处理；
S4：分别对经过步骤S3处理得到四种高密度聚乙烯管状薄膜分别对应螺旋切割得到20°高密度聚乙烯片膜层、36°高密度聚乙烯片膜层、54°高密度聚乙烯片膜层以及70°高密度聚乙烯片膜层；
S5：复合20°高密度聚乙烯片膜层、36°高密度聚乙烯片膜层、54°高密度聚乙烯片膜层以及70°高密度聚乙烯片膜层；其中：20°高密度聚乙烯片膜层和36°高密度聚乙烯片膜层之间通过第一粘合层一次交叉连接，36°高密度聚乙烯片膜层和54°高密度聚乙烯片膜层之间通过第二粘合层一次交叉连接，54°高密度聚乙烯片膜层和70°高密度聚乙烯片膜层之间通过第三粘合层一次交叉连接；
S6：70°高密度聚乙烯片膜层远离第三粘合层的一面上涂布底胶且固化，形成底胶预涂层；
S7：底胶预涂层上涂布聚偏二氯乙烯且固化，形成聚偏二氯乙烯涂布层，得到半成品；
S8：对半成品进行熟化得到成品。
进一步限定，步骤S2中取向拉伸的倍率为2-5。
进一步限定，步骤S3具体为：通过冷热交替的方式进行退火处理。
进一步限定，步骤S6和S7中均是采用紫外线照射来实现固化。
进一步限定，步骤S8中的熟化温度为38-42℃。
进一步限定，所述第一粘合层、第二粘合层以及第三粘合层由胶水制成或通过高密度聚乙烯热复合得到。
有益效果为：通过上述的制备方法得到的高阻氧万向抗撕裂薄膜性能优良，结构牢固，且上述制备方法简单，易操作，使得制备出来的高阻氧万向抗撕裂薄膜性能稳定。
附图说明
图1是高阻氧万向抗撕裂薄膜的结构示意图；
图中：1-20°高密度聚乙烯片膜层；2-第一粘合层；3-36°高密度聚乙烯片膜层；4-第二粘合层；5-54°高密度聚乙烯片膜层；6-第三粘合层；7-70°高密度聚乙烯片膜层；8-底胶预涂层；9-聚偏二氯乙烯涂布层。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
本发明的描述中，有的结构或器件未作具体描述的，理解为现有技术中有能实现的结构或器件。
具体实施例之间除了相互排除的以外都可以以任何方式进行组合。
其中：为了保证螺旋切割后得到的四种不同角度的高密度聚乙烯管状薄膜的宽度是一致的，所需要的高密度聚乙烯管状薄膜原料的宽度必须不同，详细见表1；
表1.角度与宽度的关系
Figure BDA0002681396220000041
Figure BDA0002681396220000051
关于高密度聚乙烯片膜层的角度解释，例如20°高密度聚乙烯片膜层是把高密度聚乙烯管状薄膜原来横纵向分布为90°角通过螺旋切割的方式改变为分布为20°角。
螺旋切割后需要得到相同的宽度且螺旋切割的角度越大，则需要的管状薄膜的直径就越大；反之，螺旋切割的角度越小，则需要的管状薄膜的直径就越小。
实施例1
一种高阻氧万向抗撕裂薄膜的制备方法，包括以下步骤：
S1：采用四台多层共挤吹膜机分别吹出宽度不同的四种高密度聚乙烯管状薄膜；
S2：将四种高密度聚乙烯管状薄膜分别经过在线桥架到对应的取向拉伸设备上，且以2-5倍的倍率拉薄；
S3：对步骤S2制备得到的四种高密度聚乙烯管状薄膜进行退火处理，具体为：通过冷热交替的方式释放应力和稳定性能；
S4：分别对经过步骤S3处理得到四种高密度聚乙烯管状薄膜分别对应螺旋切割得到20°高密度聚乙烯片膜层1、36°高密度聚乙烯片膜层3、54°高密度聚乙烯片膜层5以及70°高密度聚乙烯片膜层7；
S5：复合20°高密度聚乙烯片膜层1、36°高密度聚乙烯片膜层3、54°高密度聚乙烯片膜层5以及70°高密度聚乙烯片膜层7；其中：20°高密度聚乙烯片膜层1和36°高密度聚乙烯片膜层3之间通过第一粘合层2连接，36°高密度聚乙烯片膜层3和54°高密度聚乙烯片膜层5之间通过第二粘合层4连接，54°高密度聚乙烯片膜层5和70°高密度聚乙烯片膜层7之间通过第三粘合层6连接，第一粘合层、第二粘合层以及第三粘合层由胶水制成或通过高密度聚乙烯热复合得到；
S6：70°高密度聚乙烯片膜层7远离第三粘合层6的一面上涂布底胶且采用紫外线照射固化，形成底胶预涂层8；
S7：底胶预涂层8上涂布聚偏二氯乙烯且采用紫外线照射固化，形成聚偏二氯乙烯涂布层9，得到半成品；
S8：将半成品进入熟化室且在40℃条件下进行熟化得到成品。
本发明不局限于上述可选实施方式，任何人在本发明的启示下都可得出其他各种形式的产品，但不论在其形状或结构上作任何变化，凡是落入本发明权利要求界定范围内的技术方案，均落在本发明的保护范围之内。

Claims (10)

1.一种高阻氧万向抗撕裂薄膜，其特征在于，包括从上到下依次设置的20°高密度聚乙烯片膜层、第一粘合层、36°高密度聚乙烯片膜层、第二粘合层、54°高密度聚乙烯片膜层、第三粘合层、70°高密度聚乙烯片膜层、底胶预涂层以及聚偏二氯乙烯涂布层。
2.根据权利要求1所述的高阻氧万向抗撕裂薄膜，其特征在于，所述高密度聚乙烯片膜层的厚度为0.023mm。
3.根据权利要求1所述的高阻氧万向抗撕裂薄膜，其特征在于，所述20°高密度聚乙烯片膜层、36°高密度聚乙烯片膜层、54°高密度聚乙烯片膜层以及70°高密度聚乙烯片膜层均是由分别对应螺旋切割工艺制备得到。
4.根据权利要求2或3所述的高阻氧万向抗撕裂薄膜，其特征在于，底胶预涂层为AC底胶预涂层。
5.根据权利要求1-4任一项所述的高阻氧万向抗撕裂薄膜的制备方法，其特征在于，包括以下步骤：
S1：制备宽度不同的四种高密度聚乙烯管状薄膜；
S2：取向拉伸四种高密度聚乙烯管状薄膜；
S3：对步骤S2制备得到的四种高密度聚乙烯管状薄膜进行退火处理；
S4：分别对经过步骤S3处理得到四种高密度聚乙烯管状薄膜分别对应螺旋切割得到20°高密度聚乙烯片膜层、36°高密度聚乙烯片膜层、54°高密度聚乙烯片膜层以及70°高密度聚乙烯片膜层；
S5：复合20°高密度聚乙烯片膜层、36°高密度聚乙烯片膜层、54°高密度聚乙烯片膜层以及70°高密度聚乙烯片膜层；其中：20°高密度聚乙烯片膜层和36°高密度聚乙烯片膜层之间通过第一粘合层一次交叉连接，36°高密度聚乙烯片膜层和54°高密度聚乙烯片膜层之间通过第二粘合层一次交叉连接，54°高密度聚乙烯片膜层和70°高密度聚乙烯片膜层之间通过第三粘合层一次交叉连接；
S6：70°高密度聚乙烯片膜层远离第三粘合层的一面上涂布底胶且固化，形成底胶预涂层；
S7：底胶预涂层上涂布聚偏二氯乙烯且固化，形成聚偏二氯乙烯涂布层，得到半成品；
S8：对半成品进行熟化得到成品。
6.根据权利要求5所述的制备方法，其特征在于，步骤S2中取向拉伸的倍率为2-5。
7.根据权利要求5所述的制备方法，其特征在于，步骤S3具体为：通过冷热交替的方式进行退火处理。
8.根据权利要求5所述的制备方法，其特征在于，步骤S6和S7中均是采用紫外线照射来实现固化。
9.根据权利要求5所述的制备方法，其特征在于，步骤S8中的熟化温度为38-42℃。
10.根据权利要求5所述的制备方法，其特征在于，所述第一粘合层、第二粘合层以及第三粘合层由胶水制成或通过高密度聚乙烯热复合得到。
CN202010963443.6A 2020-09-14 2020-09-14 一种高阻氧万向抗撕裂薄膜及其制备方法 Pending CN111941975A (zh)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002020264A1 (en) * 2000-09-07 2002-03-14 Illinois Tool Works, Inc. Multi-layer films having at least three bias-cut layers.
CN104004212A (zh) * 2014-05-21 2014-08-27 江苏优珀斯材料科技有限公司 一种高阻隔hdpe膜生产工艺

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002020264A1 (en) * 2000-09-07 2002-03-14 Illinois Tool Works, Inc. Multi-layer films having at least three bias-cut layers.
CN104004212A (zh) * 2014-05-21 2014-08-27 江苏优珀斯材料科技有限公司 一种高阻隔hdpe膜生产工艺

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