CN103711260B - 一种自粘型pvc防水卷材 - Google Patents

一种自粘型pvc防水卷材 Download PDF

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CN103711260B
CN103711260B CN201310732305.7A CN201310732305A CN103711260B CN 103711260 B CN103711260 B CN 103711260B CN 201310732305 A CN201310732305 A CN 201310732305A CN 103711260 B CN103711260 B CN 103711260B
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CN103711260A (zh
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刘太安
郑家玉
贾皓艳
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WEIFANG ZHENGTAI WATERPROOF MATERIAL CO Ltd
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Priority to CN201610263234.4A priority patent/CN105904814A/zh
Priority to CN201610263236.3A priority patent/CN105904813A/zh
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Abstract

本发明涉及一种自粘型PVC防水卷材，从上到下依次为无纺布层、PVC防水层、自粘胶层、隔离纸，无纺布层、PVC防水层和自粘胶层依次复合而成，石油树脂、萜烯树脂和低分子量聚异丁烯按照1:15:0.6的比例混合得到的增粘剂加入到自粘胶中，得到的自粘胶具有较高的延伸特性，与无纺布层、PVC防水层复合制得的自粘型PVC防水卷材在剥离强度、耐热性、持粘性等性能方面均大大超过标准指标，其中，扯断伸长率超出标准指标115%以上，断裂拉伸强度超出标准指标130%以上，撕裂强度超出标准指标110%以上，剥离强度超出标准指标180%以上，耐热性超出标准指标125%以上，持粘性超出标准指标300%以上。

Description

一种自粘型PVC防水卷材
技术领域
本发明涉及一种防水卷材，具体的说，涉及一种自粘型PVC防水卷材，属于建筑工程防水材料领域。
背景技术
近几年来随着国家对建筑节能的重视，单层机械固定屋面系统快速发展，聚氯乙烯防水卷材已成为塑料防水卷材的主流产品。进入21世纪，交通能源等基础设施继续保持看高的增长速度，更为聚氯乙烯防水卷材提供了广阔的市场。我国早期使用的PVC防水卷材质量较差，在工程使用过程中主要出现抗老化能力差、拉伸性能差等问题，致使聚氯乙烯防水卷材的推广应用受到一定影响；另外，一般的自粘型PVC防水卷材耐热性差，在很热的温度下防水层会变薄，就会有严重的漏水隐患，适用范围窄。
发明内容
本发明的目的是针对现有技术的不足，提供一种抗老化性能好、拉伸性能高、适用范围广的自粘型PVC防水卷材。
为解决上述问题，本发明采用以下技术方案：一种自粘型PVC防水卷材，从上到下依次为无纺布层、PVC防水层、自粘胶层、隔离纸，无纺布层、PVC防水层和自粘胶层依次复合而成。
作为上述技术方案的进一步改进：
所述自粘胶层包括如下重量份的各组分：70#石油沥青50-65份、丁基橡胶8-15份、热塑性丁苯橡胶2-5份、增粘剂3.5-10份、防老剂1.5-5份、偶联剂0.5-2份、填充料20-28份。
所述自粘胶层包括如下重量份的各组分：70#石油沥青58份、丁基橡胶11份、热塑性丁苯橡胶2.5份、增粘剂7份、防老剂3份、偶联剂1.3份、填充料24份。
所述增粘剂为石油树脂、萜烯树脂和低分子量聚异丁烯的混合物。
所述增粘剂中石油树脂、萜烯树脂和低分子量聚异丁烯的比例为1:15:0.6。
所述PVC防水层为疏松型PVC层。
所述无纺布层为涤纶增强无纺布层。
所述隔离纸为易揭离PET膜。
自粘胶层的制备方法：
a.将70#沥青按配比打入配料罐，给配料罐加温；
b.待70#沥青融化后，依次加入增粘剂、防老剂、偶联剂，边搅拌边升温；
c.待温度升至180±5℃时加入丁基橡胶，搅拌50-70分钟，边搅拌边研磨；
d.温度保持在180±5℃，加入热塑性丁苯橡胶，搅拌40-60分钟，边搅拌边研磨；
e.加入填充料，搅拌30分钟，待填充料搅拌均匀之后，温度降至100～105℃，即得自粘胶。
所述自粘型PVC防水卷材的剥离强度≥1.8N/mm，持粘性≥45min，耐热性≥88℃。
本发明与现有技术相比，具有以下优点：
1、本发明采用无纺布层、PVC防水层和自粘胶层依次复合而成，使本发明的断裂拉伸强度有了很大幅度的提高；
2、石油树脂、萜烯树脂和低分子量聚异丁烯按照1:15:0.6的比例混合得到的增粘剂加入到自粘胶中，得到的自粘胶具有较高的延伸特性，与无纺布层、PVC防水层复合制得的自粘型PVC防水卷材在剥离强度、耐热性、持粘性等性能方面均大大超过标准指标，其中，扯断伸长率超出标准指标115%以上，断裂拉伸强度超出标准指标130%以上，撕裂强度超出标准指标110%以上，剥离强度超出标准指标180%以上，耐热性超出标准指标125%以上，持粘性超出标准指标300%以上。
下面结合实施例对本发明的技术方案做进一步的说明。
具体实施方式
实施例1，一种自粘型PVC防水卷材，从上到下依次为涤纶增强无纺布层、疏松型PVC防水层、自粘胶层、易揭离PET膜，涤纶增强无纺布层、疏松型PVC防水层和自粘胶层依次复合而成。
自粘胶层包括如下重量份的各组分：70#石油沥青50份、丁基橡胶8份、热塑性丁苯橡胶2份、增粘剂3.5份、防老剂1.5份、偶联剂0.5份、填充料20份。
增粘剂为石油树脂、萜烯树脂和低分子量聚异丁烯的混合物，增粘剂中石油树脂、萜烯树脂和低分子量聚异丁烯的比例为1:15:0.6。
自粘胶层的制备方法：
a.将70#沥青按配比打入配料罐，给配料罐加温；
b.待70#沥青融化后，依次加入增粘剂、防老剂、偶联剂，边搅拌边升温；
c.待温度升至160±5℃时加入丁基橡胶，搅拌50分钟，边搅拌边研磨；
d.温度保持在160±5℃，加入热塑性丁苯橡胶，搅拌40分钟，边搅拌边研磨；
e.加入填充料，搅拌30分钟，待填充料搅拌均匀之后，温度降至100～105℃，即得自粘胶。
实施例2，一种自粘型PVC防水卷材，从上到下依次为涤纶增强无纺布层、疏松型PVC防水层、自粘胶层、易揭离PET膜，涤纶增强无纺布层、疏松型PVC防水层和自粘胶层依次复合而成。
自粘胶层包括如下重量份的各组分：70#石油沥青58份、丁基橡胶11份、热塑性丁苯橡胶2.5份、增粘剂7份、防老剂3份、偶联剂1.3份、填充料24份。
增粘剂为石油树脂、萜烯树脂和低分子量聚异丁烯的混合物，增粘剂中石油树脂、萜烯树脂和低分子量聚异丁烯的比例为1:15:0.6。
自粘胶层的制备方法：
a.将70#沥青按配比打入配料罐，给配料罐加温；
b.待70#沥青融化后，依次加入增粘剂、防老剂、偶联剂，边搅拌边升温；
c.待温度升至160±5℃时加入丁基橡胶，搅拌60分钟，边搅拌边研磨；
d.温度保持在160±5℃，加入热塑性丁苯橡胶，搅拌50分钟，边搅拌边研磨；
e.加入填充料，搅拌30分钟，待填充料搅拌均匀之后，温度降至100～105℃，即得自粘胶。
实施例3，一种自粘型PVC防水卷材，从上到下依次为涤纶增强无纺布层、疏松型PVC防水层、自粘胶层、易揭离PET膜，涤纶增强无纺布层、疏松型PVC防水层和自粘胶层依次复合而成。
自粘胶层包括如下重量份的各组分：70#石油沥青65份、丁基橡胶15份、热塑性丁苯橡胶5份、增粘剂10份、防老剂5份、偶联剂2份、填充料28份。
增粘剂为石油树脂、萜烯树脂和低分子量聚异丁烯的混合物，增粘剂中石油树脂、萜烯树脂和低分子量聚异丁烯的比例为1:15:0.6。
自粘胶层的制备方法：
a.将70#沥青按配比打入配料罐，给配料罐加温；
b.待70#沥青融化后，依次加入增粘剂、防老剂、偶联剂，边搅拌边升温；
c.待温度升至160±5℃时加入丁基橡胶，搅拌70分钟，边搅拌边研磨；
d.温度保持在160±5℃，加入热塑性丁苯橡胶，搅拌60分钟，边搅拌边研磨；
e.加入填充料，搅拌30分钟，待填充料搅拌均匀之后，温度降至100～105℃，即得自粘胶。
实施例4，一种自粘型PVC防水卷材，从上到下依次为涤纶增强无纺布层、疏松型PVC防水层、自粘胶层、易揭离PET膜，涤纶增强无纺布层、疏松型PVC防水层和自粘胶层依次复合而成。
自粘胶层包括如下重量份的各组分：70#石油沥青58份、丁基橡胶11份、热塑性丁苯橡胶2.5份、增粘剂3.5份、防老剂3份、偶联剂1.3份、填充料24份。
增粘剂为石油树脂、萜烯树脂和低分子量聚异丁烯的混合物，增粘剂中石油树脂、萜烯树脂和低分子量聚异丁烯的比例为1:15:0.6。
自粘胶层的制备方法同实施例2中自粘胶层的制备方法。
实施例5，一种自粘型PVC防水卷材，从上到下依次为涤纶增强无纺布层、疏松型PVC防水层、自粘胶层、易揭离PET膜，涤纶增强无纺布层、疏松型PVC防水层和自粘胶层依次复合而成。
自粘胶层包括如下重量份的各组分：70#石油沥青58份、丁基橡胶11份、热塑性丁苯橡胶2.5份、增粘剂10份、防老剂3份、偶联剂1.3份、填充料24份。
增粘剂为石油树脂、萜烯树脂和低分子量聚异丁烯的混合物，增粘剂中石油树脂、萜烯树脂和低分子量聚异丁烯的比例为1:15:0.6。
自粘胶层的制备方法同实施例2中自粘胶层的制备方法。
实验说明
将本发明自粘型PVC防水卷材进行实验，实验根据标准GB/T23457-2009《湿铺／预铺防水卷材》进行，实验数据见下表1。
表1
由表1可以看出，与标准指标相比，本发明在剥离强度、耐热性、持粘性等性能方面均大大超过标准指标，其中，扯断伸长率超出标准指标115%以上，断裂拉伸强度超出标准指标130%以上，撕裂强度超出标准指标110%以上，剥离强度超出标准指标180%以上，耐热性超出标准指标125%以上，持粘性超出标准指标300%以上。其中，实施例2为最优选方案。
另外，实施例2与实施例4、实施例5相比，不同的地方在于增粘剂加入量的不同，通过表1的数据表明，实施例2的自粘型PVC防水卷材的性能指标最好，即增粘剂的加入量为7份的时候，自粘型PVC防水卷材的性能指标最好，增粘剂为石油树脂、萜烯树脂和低分子量聚异丁烯的混合物，增粘剂中石油树脂、萜烯树脂和低分子量聚异丁烯的比例为1:15:0.6。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (7)

1.一种自粘型PVC防水卷材，其特征在于：从上到下依次为无纺布层、PVC防水层、自粘胶层、隔离纸，无纺布层、PVC防水层和自粘胶层依次复合而成；
所述自粘胶层包括如下重量份的各组分：70#石油沥青50-65份、丁基橡胶8-15份、热塑性丁苯橡胶2-5份、增粘剂3.5-10份、防老剂1.5-5份、偶联剂0.5-2份、填充料20-28份；
所述增粘剂为石油树脂、萜烯树脂和低分子量聚异丁烯的混合物；
所述增粘剂中石油树脂、萜烯树脂和低分子量聚异丁烯的比例为1:15:0.6。
2.如权利要求1所述的一种自粘型PVC防水卷材，其特征在于：所述自粘胶层包括如下重量份的各组分：70#石油沥青58份、丁基橡胶11份、热塑性丁苯橡胶2.5份、增粘剂7份、防老剂3份、偶联剂1.3份、填充料24份。
3.如权利要求1所述的一种自粘型PVC防水卷材，其特征在于：所述PVC防水层为疏松型PVC层。
4.如权利要求3所述的一种自粘型PVC防水卷材，其特征在于：所述无纺布层为涤纶增强无纺布层。
5.如权利要求4所述的一种自粘型PVC防水卷材，其特征在于：所述隔离纸为易揭离PET膜。
6.如权利要求1所述的一种自粘型PVC防水卷材，其特征在于：所述自粘胶层的制备方法：
a.将70#沥青按配比打入配料罐，给配料罐加温；
b.待70#沥青融化后，依次加入增粘剂、防老剂、偶联剂，边搅拌边升温；
c.待温度升至180±5℃时加入丁基橡胶，搅拌50分钟，边搅拌边研磨；
d.温度保持在180±5℃，加入热塑性丁苯橡胶，搅拌40分钟，边搅拌边研磨；
e.加入填充料，搅拌30分钟，待填充料搅拌均匀之后，温度降至100～105℃，即得自粘油。
7.如权利要求1所述的一种自粘型PVC防水卷材，其特征在于：所述自粘型PVC防水卷材的剥离强度≥1.8N/mm，持粘性≥45min，耐热性≥88℃。
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