CN105838270A - 一种防腐用复合胶膜及其制备方法 - Google Patents

一种防腐用复合胶膜及其制备方法 Download PDF

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CN105838270A
CN105838270A CN201610190297.1A CN201610190297A CN105838270A CN 105838270 A CN105838270 A CN 105838270A CN 201610190297 A CN201610190297 A CN 201610190297A CN 105838270 A CN105838270 A CN 105838270A
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adhesive
layer
adhesive linkage
compound cutan
sealant
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张燕红
王海利
袁培峰
张娜娜
李文莉
王玲玲
姜丽丽
王好春
朱吟湄
李萌
杨亚娟
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Zhengzhou Silande New Material Technology Co Ltd
ZHENGZHOU ZHONGYUAN APPLIED TECHNOLOGY RESEARCH AND DEVELOPMENT Co Ltd
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ZHENGZHOU ZHONGYUAN APPLIED TECHNOLOGY RESEARCH AND DEVELOPMENT Co Ltd
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Abstract

本发明提供了一种防腐用复合胶膜及其制备方法。所述防腐用复合胶膜包括防护层和设置于防护层的粘接层,防护层包括硅酮胶层、聚硫胶层或结构胶层;粘接层设置于所述防护层。本发明的防腐用复合胶膜,使用方便,不受环境和温度的影响,且克服了其他防腐工艺在特殊环境中施工不方便的缺点。

Description

一种防腐用复合胶膜及其制备方法
技术领域
本发明涉及一种复合胶膜,具体为一种防腐用复合胶膜及其制备方法。
背景技术
腐蚀造成各种事故和重大灾害。埋地输油燃气、水等管道、管网的泄漏等,除损失大量有用的物质外又造成严重的环境污染,甚至引起火灾、爆炸、塌毁等灾难性事故。同时海洋钢筋混凝土设施,如码头、栈桥、人工岛、跨海大桥等同样也存在腐蚀问题。鉴于腐蚀的普遍存在,为了防止或减缓腐蚀的发生,各种防腐材料和工艺应运而生。
粘弹体胶带作为一种防腐新产品具有独特的冷流特性,在防腐及修复的过程中可以自修复,以达到完全保护的效果。使用过程中不需要涂刷底漆,无脱落、无开裂、无硬化,具有很强的粘结力,良好的耐化学性无阴极保护剥离现象,彻底杜绝水分侵入及微生物腐蚀等优点的存在使其具有独特的长效性。而且复合胶膜施工简单方便,对表面的处理要求不高,是防腐保护的理想产品。
现有技术1(专利CN101935500A)涉及一种防腐粘弹体胶带,包括依次设置的保护膜层、第一粘弹体胶层、增强网层、第二粘弹体胶层和离型膜层,保护膜层与第一粘弹体胶层、第一粘弹体胶层与增强网层、增强网层与第二粘弹体胶层彼此粘结复合成一体,离型膜层粘贴于第二粘弹体胶层上,其中粘弹体胶由下列重量分数的原料制得:3%~10%的丁基橡胶、5%~10%的高分子量聚异丁烯、25%~35%的中分子量聚异丁烯、10%~15%的低分子量聚异丁烯、30%~45%的无机增强粉料、0.5%~1.0%的抗氧剂、0.5%~1.0%的防老剂、0%~1.0%的色料。上述现有的粘弹体胶带具有自修复功能,使用时无需涂刷底漆,可直接用于异型构件防腐。
现有技术2(专利CN102382593A)公开了一种高温型粘弹体防腐密封胶带及其制备方法,该高温型粘弹体防腐密封胶带,为层状结构,依次由聚乙烯膜、第一粘弹体胶料层、聚乙烯网层、第二粘弹体胶料层和PET防粘膜组成,其中所述第一粘弹体胶料层和第二粘弹体胶料层的材质由下述组分按重量份组成:低分子量聚异丁烯2-5份,中分子量聚异丁烯35-45份,高分子量聚异丁烯5-10份,无机填料40-50份,抗氧剂0.2-0.5份,颜料0.0001-0.0005份。上述现有的封胶带用于石油天然气管道以及异形设备的防腐保护,具有独特的冷流性,在防腐过程中可以达到自修复功能,同时能够彻底的杜绝水分侵入,彻底杜绝微生物腐蚀,具有良好的长效防护性。
目前,粘弹体防腐产品的研究已逐步展开,然而现有的粘弹体胶带作为防腐层,其剪切强度小,抵抗外界机械力量的能力较差。为了抵抗外界力量的冲击,需要在粘弹体外面增加热收缩带以增强其使用寿命。但是与其配套的现场防腐大多采用手工操作,受现场施工环境、人员因素影响非常大,施工极不方便。现有技术2的高温型粘弹体防腐密封胶带虽然扩大了粘弹体的适用范围,但是也具有一定的局限性,只是对单一的环境进行改善,不能完全覆盖市场需求。另外,现有技术1与现有技术2的胶带的保护膜层主要是塑料类材质,一般不能作为最外层防护;且内部的粘弹体胶层是一种不固化的弹性体,具有一定的流动性,不能起结构作用,而且强度也较小,不能单独使用。
发明内容
本发明的一个主要目的在于克服上述现有技术的至少一种缺陷,提供一种防腐用复合胶膜,包括防护层和粘接层,所述防护层包括硅酮胶层、聚硫胶层或结构胶层;所述粘接层设置于所述防护层。
根据本发明的一实施方式,所述结构胶层包括:
根据本发明的另一实施方式,还包括离型膜层,所述离型膜层设置于所述粘接层。
根据本发明的另一实施方式,所述粘接层为丁基胶膜层。
根据本发明的另一实施方式,还包括芯层,设置于所述防护层与所述粘接层之间,用以连接所述防护层与所述粘接层。
根据本发明的另一实施方式,所述芯层选自铝箔、玻纤布铝箔、铝箔复合膜中的一种。
本发明进一步提供了一种防腐用复合胶膜的制备方法,包括将硅酮胶或聚硫胶涂至粘接层的表面,固化成型;或者将结构胶膜与粘接层通过挤出成型相复合,制得所述防腐用复合胶膜。
根据本发明的一实施方式,包括:将所述粘接层与离型膜层通过挤出成型复合成膜;以及将硅酮胶或聚硫胶涂至所述粘接层上与所述离型膜层相对的一侧,固化成型,制得所述防腐用复合胶膜。
根据本发明的另一实施方式,包括:将芯层、所述粘接层以及离型膜层通过挤出成型复合成膜;以及将硅酮胶或聚硫胶涂至芯层上与粘接层相对的一侧,固化成型,制得所述防腐用复合胶膜。
根据本发明的另一实施方式,包括:将结构胶膜、芯层、粘接层以及离型膜层通过挤出成型复合成膜,制得所述防腐用复合胶膜。
本发明的防腐用复合胶膜,使用方便,不受环境和温度的影响,且克服了其他防腐工艺在特殊环境中施工不方便的缺点,例如:对于需要手工涂覆的保护层,在施工位置和环境较恶劣时,涂覆非常不方便,而复合胶膜只需选择合适的产品包覆即可;另外,在长期受海浪和漂浮物冲击的环境下,单一的包覆产品抗冲击能力不足,二次施工又不太方便,选择强度大的复合胶膜即可解决上述难题。
具体实施方式
体现发明特征与优点的典型实施例将在以下的说明中详细叙述。应理解的是本发明能够在不同的实施例上具有各种的变化,其皆不脱离本发明的范围,且其中的描述在本质上是当作说明之用,而非用以限制本发明。
本发明提供了一种防腐用复合胶膜,包括防护层和设置于防护层的粘接层。防护层包括硅酮胶层、聚硫胶层或结构胶层,起到防腐、防护的作用;粘接层,设置于所述防护层,用于粘接于防腐产品。
在本发明的一实施方式中,粘接层包括第一表面和第二表面,粘接层通过第一表面复合于防护层,并通过第二表面粘接于防腐产品。或者还可包括离型膜层,粘接层通过第二表面粘接于离型膜层,使用时可将离型膜层剥离,将复合胶膜通过粘接层的第二表面贴覆于防腐产品。
进一步地,本发明对用于离型膜层的材料没有限定,例如可以为BOPP离型膜(双向拉伸聚丙烯薄膜)、PE(聚乙烯)膜及PET(聚对苯二甲酸乙二醇酯)膜中的一种。
本发明中,防护层的厚度可以为0.8~1.2mm,优选为1mm。防护层材质不同的复合胶膜具有不同的优势,可根据施工环境选择合适的胶膜。在本发明的一实施方式中,防护层可以为硅酮胶层,硅酮胶层具有较大的结构强度、弹性、优良的耐紫外性能和优异的耐候性能,用于充当防腐用复合胶膜的防护层可增强产品的耐紫外性及耐候性,同时还可降低复合胶膜的损耗。其中硅酮胶层的材质可为现有技术的硅酮密封胶,该密封胶例如可由下述重量份的原料制成:
在本发明的另一实施方式中,防护层可以为聚硫胶层,聚硫胶层具有优良的密封、耐油、耐酸碱等性能,用于充当复合胶膜的防护层可使防腐产品更耐酸碱的腐蚀。聚硫胶层的材质可为现有技术的聚硫密封胶,该密封胶例如可由下述重量份的原料制成:
在本发明的另一实施方式中,防护层可以为结构胶层,结构胶层具有极高的结构强度和硬度、良好的稳定性、耐久性和环保性,用于充当防护层可提高防腐产品抵抗外界机械力量的能力,该密封胶可由下述重量份的原料制成:
在本发明的一实施方式中,粘接层可以为丁基胶膜层,其厚度可以为0.8~1.2mm,优选为1mm。其中丁基胶膜层的材质可为现有技术的丁基密封胶。
进一步地,为增强防护层与粘接层之间的作用力,可在防护层与粘接层之间增设芯层,芯层例如可以为铝箔。为了进一步增强复合胶膜的韧性,芯层还可以为网状物,例如:聚酯网、PE网、PVC网等。芯层的设置可解决由于防护层材质与粘接层材质的粘结性不够好,而导致的防护层与粘接层之间的粘接力不够强的问题。
本发明进一步提供了一种防腐用复合胶膜的制备方法,包括将硅酮胶或聚硫胶涂至粘接层的表面,固化成型;或者将结构胶膜与粘接层通过挤出成型相复合,制得具有两层结构的防腐用复合胶膜。其中粘接层例如可以为丁基密封胶膜。
在本发明的一实施方式中,可先将粘接层与离型膜层例如通过挤出成型复合成膜,再将硅酮胶或聚硫胶涂至粘接层上与离型膜层相对的一侧,固化成型,制得具有防护层/粘接层/离型膜层三层结构的防腐用复合胶膜。
在本发明的另一实施方式中,将芯层、粘接层以及离型膜层例如通过挤出成型复合成膜,形成芯层/粘接层/离型膜层结构,再将硅酮胶或聚硫胶涂至芯层上与粘接层相对的一侧,固化成型,制得具有防护层/芯层/粘接层/离型膜层四层结构的防腐用复合胶膜。
在本发明的另一实施方式中,可将结构胶膜、芯层、粘接层以及离型膜层直接通过挤出成型复合成膜,制得具有防护层/芯层/粘接层/离型膜层四层结构的防腐用复合胶膜。
以下,结合具体实施例对本发明的防腐用复合胶膜及其制备方法做进一步说明。
实施例1
按生产配方分别生产出聚硫密封胶(MF860F聚硫防腐密封胶,郑州中原应用技术研究开发有限公司生产)和丁基密封胶(MF2000M永久塑性密封胶膜,郑州中原应用技术研究开发有限公司生产),将丁基密封胶和PET膜放置在成膜机的指定位置等待成膜。
将丁基密封胶切成块状放置在进胶口的位置,开启成膜机,通过挤出成型设备将丁基密封胶和PET离型膜层复合在一起,同时将聚硫密封胶的A、B两组分通过挤出设备混合均匀刮涂到丁基密封胶膜的表面,然后将复合好的胶膜送进固化区域内进行固化,最后在收卷装置上进行收卷,得到具有聚硫密封胶膜层/丁基密封胶膜层/PET离型膜层结构的复合胶膜。
实施例2
本实施例与实施例1的操作步骤大致相同,故省去相同内容的说明,本实施例制得的复合胶膜的结构为:聚硫密封胶膜层/丁基密封胶膜层/BOPP离型膜层。
其中,所使用的聚硫密封胶的性能指标如表1所示。
表1聚硫密封胶性能指标
实施例3
按生产配方分别生产出硅酮密封胶(MF881F-25硅酮防腐密封胶,郑州中原应用技术研究开发有限公司生产)和丁基密封胶(MF2000M永久塑性密封胶膜,郑州中原应用技术研究开发有限公司生产),将丁基密封胶、铝箔和PET膜放置在成膜机的指定位置等待成膜。
将丁基密封胶切成块状放置在进胶口的位置,开启成膜机,通过挤出成型设备将丁基密封胶、铝箔和PET离型膜层复合在一起,同时将硅酮密封胶的A、B两组分通过挤出设备混合均匀刮涂到铝箔的表面,然后将复合好的胶膜送进固化区域内进行固化,最后在收卷装置上进行收卷,得到具有硅酮密封胶膜层/铝箔/丁基密封胶膜层/PET离型膜层结构的复合胶膜。
实施例4
本实施例与实施例3的操作步骤大致相同,故省去相同内容的说明,本实施例制得的复合胶膜的结构为:硅酮密封胶膜层/聚酯网/丁基密封胶膜层/PET离型膜层。
其中,所使用的硅酮密封胶的性能如表2所示。
表2硅酮密封胶性能指标
项目 指标
断裂伸长率 ≥400%
弹性恢复率 ≥80%
紫外线辐照试验 1008h后,强度保持率≥75%
盐雾试验 20d后,强度保持率≥75%
酸雾试验 20d后,强度保持率≥75%
疲劳试验 5350次循环后,强度保持率≥75%
实施例5
按生产配方分别生产出丁基密封胶(MF2000M永久塑性密封胶膜,郑州中原应用技术研究开发有限公司生产)和结构胶(MF1011结构胶膜),然后将PE膜以及聚酯网放置在成膜机的指定位置等待成膜。
将结构胶和丁基密封胶切成块状放置在进胶口的位置,开启成膜机,两个进胶口同时进样,通过挤出成型设备将结构胶、丁基密封胶和聚酯网及PE离型膜层复合在一起,形成复合胶膜,最后在收卷装置上收卷,得到具有结构胶膜层/聚酯网/丁基密封胶膜层/PE离型膜层结构的复合胶膜。
其中,所使用的结构胶膜的性能如表3所示。
表3结构胶膜的技术指标
实施例6
本实施例与实施例5的操作步骤大致相同,故省去相同内容的说明,本实施例制得的复合胶膜的结构为:结构胶膜层/铝箔/丁基密封胶膜层/PET离型膜层。
本发明依据标准GB/T 528《硫化橡胶或热塑性橡胶拉伸应力应变性能的测定》、GB/T 7124《胶粘剂拉伸剪切强度的测定(刚性材料对刚性材料)》和MH5006《民用机场飞行区水泥混凝土道面面层施工技术规范》对实施例1至6和对比例(CN 102382593A)的性能进行检测,其性能对比表见表4:
表4
本发明实施例的复合胶膜使用方便,不受环境和温度的影响,且克服了其他防腐工艺在特殊环境中施工不方便的缺点。表4的数据显示,在相同条件的紫外光照射试验、酸雾试验、盐雾试验中,本发明实施例的复合胶膜的剪切强度保持率均优于现有技术对比例的高温型粘弹体防腐密封胶带。
除非特别限定,本发明所用术语均为本领域技术人员通常理解的含义。
本发明所描述的实施方式仅出于示例性目的,并非用以限制本发明的保护范围,本领域技术人员可在本发明的范围内作出各种其他替换、改变和改进,因而,本发明不限于上述实施方式,而仅由权利要求限定。

Claims (10)

1.一种防腐用复合胶膜,包括
防护层,包括硅酮胶层、聚硫胶层或结构胶层;以及
粘接层,设置于所述防护层。
2.根据权利要求1所述的复合胶膜,其中所述结构胶层包括:
3.根据权利要求1所述的复合胶膜,其中还包括离型膜层,所述离型膜层设置于所述粘接层。
4.根据权利要求1所述的复合胶膜,其中所述粘接层为丁基胶膜层。
5.根据权利要求1至4中任一项所述的复合胶膜,其中还包括芯层,设置于所述防护层与所述粘接层之间,用以连接所述防护层与所述粘接层。
6.根据权利要求5所述的复合胶膜,其中所述芯层选自铝箔、玻纤布铝箔、铝箔复合膜中的一种。
7.一种权利要求1至6中任一项所述的防腐用复合胶膜的制备方法,包括将硅酮胶或聚硫胶涂至粘接层的表面,固化成型;或者将结构胶膜与粘接层通过挤出成型相复合,制得所述防腐用复合胶膜。
8.根据权利要求7所述的方法,包括:
将所述粘接层与离型膜层通过挤出成型复合成膜;以及
将硅酮胶或聚硫胶涂至所述粘接层上与所述离型膜层相对的一侧,固化成型,制得所述防腐用复合胶膜。
9.根据权利要求7所述的方法,包括:
将芯层、所述粘接层以及离型膜层通过挤出成型复合成膜;以及
将硅酮胶或聚硫胶涂至芯层上与粘接层相对的一侧,固化成型,制得所述防腐用复合胶膜。
10.根据权利要求7所述的方法,包括:
将结构胶膜、芯层、粘接层以及离型膜层通过挤出成型复合成膜,制得所述防腐用复合胶膜。
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