CN107901538A - 高分子自粘防水卷材及其制备方法 - Google Patents

高分子自粘防水卷材及其制备方法 Download PDF

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CN107901538A
CN107901538A CN201711205682.XA CN201711205682A CN107901538A CN 107901538 A CN107901538 A CN 107901538A CN 201711205682 A CN201711205682 A CN 201711205682A CN 107901538 A CN107901538 A CN 107901538A
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黄志强
钟圣福
王继发
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HEXIN WATERPROOF AND DECORATION MATERIAL Co Ltd
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Abstract

本发明公开了高分子自粘防水卷材，以玻纤毡或聚酯毡为增强体，增强体上面涂覆改性沥青层，改性沥青层上表面覆矿物颗粒层，增强体下面涂覆热塑性聚烯烃层；改性沥青胶料层设置在上覆面层和中间胎体层之间；所述改性沥青胶料层由以下重量份的原料组成：沥青50～62份、粉化再生橡胶粉8～10份、废胶粉15～25份、乙烯‑辛烯共聚物1.5～2.5份。本发明的防水卷材使用寿命长，防水性能和耐老化性能、耐热性能好。

Description

高分子自粘防水卷材及其制备方法
技术领域
本发明属于建筑用化学材料领域，具体涉及高分子自粘防水卷材及其制备方法。
背景技术
自粘防水卷材是一种很有发展前景的新型防水材料。自粘卷材具有不透水性好，低温柔度适应性强，抗变形性能及自愈性好等特点，防水效果良好，而且无需热熔，冷施工，直接铺粘，既提高了施工效率，又消除了火灾隐患，受到了施工、设计与建设单位的高度赞誉。
但就目前的自粘聚合物改性沥青防水卷材来说，其耐热性不高，夏季施工出现了很多问题，在太阳暴晒下卷材表面温度可达到70℃，此时卷材熔化变软，有流淌趋势；并且隔离膜难以揭开，影响施工效率。国家标准规定耐热性要求是70℃无滑动流淌，行业中鲜有耐热性超过70℃的自粘性卷材。
发明内容
本发明要解决的技术问题是提供高分子自粘防水卷材及其制备方法，该卷材使用寿命长，耐高温，适合高温地域使用。
本发明提供的技术方案是提供高分子自粘防水卷材，以玻纤毡或聚酯毡为增强体，增强体上面涂覆改性沥青层，改性沥青层上表面覆矿物颗粒层，增强体下面涂覆热塑性聚烯烃层；
改性沥青胶料层设置在上覆面层和中间胎体层之间；所述改性沥青胶料层由以下重量份的原料组成：沥青50～62份、粉化再生橡胶粉8～10份、废胶粉15～25份、乙烯-辛烯共聚物1.5～2.5份。
各层的厚度分别为：增加体厚度为1.0～2.0mm、矿物颗粒层1.0～2.0mm、热塑性聚烯烃层0.6～1.5mm、改性沥青胶料层0.5～1.0mm。
所述改性沥青胶料的制作方法为：现将沥青升温至200～220℃，加入废机油搅拌均匀降温至180～190℃，再加入粉化再生橡胶粉，升温至240～250℃，加入废胶粉，保温搅拌2～3h，再加入乙烯-辛烯共聚物继续搅拌0.5～1h，即得改性沥青胶料。
所述沥青为石油沥青和天然湖沥青复配，天然湖沥青占沥青总量的50～100％。
石油沥青的针入度为80～60，软化点为48～55℃，沥青质的含量在15～18％。
所述天然湖沥青的软化点为95～110℃，含有33～38％的多孔矿物质，天然湖沥青中沥青质的含量为38～43％。
本发明还提供了上述高分子自粘防水卷材的制备方法，将各层热压复合，冷却成型，即得。
与现有技术相比，本发明具有以下有益效果：
1)本发明的高分子自粘防水卷材，所用的耐候性改性沥青使用的湖沥青含氮量高，分子量大，含蜡量低，含有活性多孔状的矿物质等特点，赋予沥青卷材具有优异的耐候性、性能稳定性、与矿物粒料的粘附性和优异的阻燃性能。
2)在保证价格不变的基础上，可以显著改善目前沥青卷材老化速度快，矿物粒料易脱落，使用寿命短等问题。
3)液态是由沥青与改性剂的配伍性好，具有良好的蠕变性、自愈性和粘接性，在温度为150℃时，表现出良好的施工性能，可以与基层形成良好的满粘效果，提高了施工效率，降低了高温下气体挥发对环境造成的污染，同时也降低了高温下施工作用带来的安全风险。
具体实施方式
以下具体实施例对本发明作进一步阐述，但不作为对本发明的限定。
实施例1
1)石油沥青的针入度为80，软化点为48℃，沥青质的含量在15％。天然湖沥青的软化点为95℃，含有33％的多孔矿物质，天然湖沥青中沥青质的含量为38％。将石油沥青和天然湖沥青复配，天然湖沥青占沥青总量的50％；
2)所述改性沥青胶料层由以下重量份的原料组成：上述复配沥青50份、粉化再生橡胶粉8份、废胶粉15份、乙烯-辛烯共聚物1.5份。
3)先将上述复配沥青升温至200℃，加入废机油搅拌均匀降温至180℃，再加入粉化再生橡胶粉，升温至240℃，加入废胶粉，保温搅拌2h，再加入乙烯-辛烯共聚物继续搅拌0.5h，即得改性沥青胶料。
4)以玻纤毡或聚酯毡为增强体，增强体上面涂覆改性沥青层，改性沥青层上表面覆矿物颗粒层，增强体下面涂覆热塑性聚烯烃层；增加体厚度为1.0mm、矿物颗粒层1.0mm、热塑性聚烯烃层0.6mm、改性沥青胶料层0.5mm，即为防水卷材。
实施例2
1)天然湖沥青的软化点为110℃，含有38％的多孔矿物质，天然湖沥青中沥青质的含量为43％。
2)所述改性沥青胶料层由以下重量份的原料组成：天然湖沥青62份、粉化再生橡胶粉10份、废胶粉25份、乙烯-辛烯共聚物2.5份。
3)先将天然湖沥青升温至220℃，加入废机油搅拌均匀降温至190℃，再加入粉化再生橡胶粉，升温至250℃，加入废胶粉，保温搅拌3h，再加入乙烯-辛烯共聚物继续搅拌1h，即得改性沥青胶料。
4)以玻纤毡或聚酯毡为增强体，增强体上面涂覆改性沥青层，改性沥青层上表面覆矿物颗粒层，增强体下面涂覆热塑性聚烯烃层；增加体厚度为2.0mm、矿物颗粒层2.0mm、热塑性聚烯烃层1.5mm、改性沥青胶料层1.0mm，即为防水卷材。
实施例3
1)石油沥青的针入度为70，软化点为50℃，沥青质的含量在16％。天然湖沥青的软化点为105℃，含有35％的多孔矿物质，天然湖沥青中沥青质的含量为40％。将石油沥青和天然湖沥青复配，天然湖沥青占沥青总量的80％；
2)所述改性沥青胶料层由以下重量份的原料组成：上述复配沥青58份、粉化再生橡胶粉9份、废胶粉20份、乙烯-辛烯共聚物2份。
3)先将上述复配沥青升温至210℃，加入废机油搅拌均匀降温至185℃，再加入粉化再生橡胶粉，升温至245℃，加入废胶粉，保温搅拌2.5h，再加入乙烯-辛烯共聚物继续搅拌0.8h，即得改性沥青胶料。
4)以玻纤毡或聚酯毡为增强体，增强体上面涂覆改性沥青层，改性沥青层上表面覆矿物颗粒层，增强体下面涂覆热塑性聚烯烃层；增加体厚度为1.5mm、矿物颗粒层1.5mm、热塑性聚烯烃层1.2mm、改性沥青胶料层0.8mm，即为防水卷材。
实施例4
1)石油沥青的针入度为80，软化点为55℃，沥青质的含量在15％。天然湖沥青的软化点为110℃，含有33％的多孔矿物质，天然湖沥青中沥青质的含量为43％。将石油沥青和天然湖沥青复配，天然湖沥青占沥青总量的50％；
2)所述改性沥青胶料层由以下重量份的原料组成：上述复配沥青62份、粉化再生橡胶粉8份、废胶粉25份、乙烯-辛烯共聚物1.5份。
3)先将上述复配沥青升温至220℃，加入废机油搅拌均匀降温至180℃，再加入粉化再生橡胶粉，升温至250℃，加入废胶粉，保温搅拌2h，再加入乙烯-辛烯共聚物继续搅拌1h，即得改性沥青胶料。
4)以玻纤毡或聚酯毡为增强体，增强体上面涂覆改性沥青层，改性沥青层上表面覆矿物颗粒层，增强体下面涂覆热塑性聚烯烃层；增加体厚度为1.0mm、矿物颗粒层2.0mm、热塑性聚烯烃层0.6mm、改性沥青胶料层1.0mm，即为防水卷材。

Claims (7)

1.高分子自粘防水卷材，其特征在于：以玻纤毡或聚酯毡为增强体，增强体上面涂覆改性沥青层，改性沥青层上表面覆矿物颗粒层，增强体下面涂覆热塑性聚烯烃层；
改性沥青胶料层设置在上覆面层和中间胎体层之间；所述改性沥青胶料层由以下重量份的原料组成：沥青50～62份、粉化再生橡胶粉8～10份、废胶粉15～25份、乙烯-辛烯共聚物1.5～2.5份。
2.根据权利要求1所述的高分子自粘防水卷材，其特征在于：各层的厚度分别为：增加体厚度为1.0～2.0mm、矿物颗粒层1.0～2.0mm、热塑性聚烯烃层0.6～1.5mm、改性沥青胶料层0.5～1.0mm。
3.根据权利要求1所述的高分子自粘防水卷材，其特征在于：所述改性沥青胶料的制作方法为：现将沥青升温至200～220℃，加入废机油搅拌均匀降温至180～190℃，再加入粉化再生橡胶粉，升温至240～250℃，加入废胶粉，保温搅拌2～3h，再加入乙烯-辛烯共聚物继续搅拌0.5～1h，即得改性沥青胶料。
4.根据权利要求1所述的高分子自粘防水卷材，其特征在于：所述沥青为石油沥青和天然湖沥青复配，天然湖沥青占沥青总量的50～100％。
5.根据权利要求4所述的高分子自粘防水卷材，其特征在于：石油沥青的针入度为80～60，软化点为48～55℃，沥青质的含量在15～18％。
6.根据权利要求4所述的高分子自粘防水卷材，其特征在于：所述天然湖沥青的软化点为95～110℃，含有33～38％的多孔矿物质，天然湖沥青中沥青质的含量为38～43％。
7.权利要求1～6中任一项所述的高分子自粘防水卷材的制备方法，其特征在于：将各层热压复合，冷却成型，即得。
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