CN104629219A - 硅橡胶改性pvc防水卷材 - Google Patents

硅橡胶改性pvc防水卷材 Download PDF

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CN104629219A
CN104629219A CN201510082178.XA CN201510082178A CN104629219A CN 104629219 A CN104629219 A CN 104629219A CN 201510082178 A CN201510082178 A CN 201510082178A CN 104629219 A CN104629219 A CN 104629219A
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silicon rubber
pvc waterproof
rubber modified
modified pvc
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孟祥旗
张东海
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NINGBO HUAGAOKE WATERPROOF TECHNOLOGY Co Ltd
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Abstract

本发明公开了一种硅橡胶改性PVC防水卷材，包括从上到下依次复合排布的第一无纺布层、硅橡胶改性PVC防水层和第二无纺布层；其特征在于：所述硅橡胶改性PVC防水层各成分的重量份数为：PVC树脂颗粒55-85份，硅橡胶5-15份，碳酸钙5-15份，增塑剂5-15份，紫外线吸收剂0.1-0.6份，抗氧剂0.1-0.3份，颜料3.5-4.5份。采用甲基乙烯基硅橡胶作为PVC树脂的改性剂，由于硅橡胶分子是由半无机半有机的结构单元组成，从而使硅橡胶材料具有优异的耐高低温性、抗老化、耐臭氧、耐紫外，以及柔顺、憎水等性质，将硅橡胶作为改性PVC的主要材料，采用分子量在2000左右的聚酯为增塑剂，在保证PVC防水卷材较高的力学性能的同时，又能有效提高该材料的抗老化，耐紫外性能、耐高低温性能。

Description

硅橡胶改性PVC防水卷材
技术领域
本发明涉及防水材料技术领域，具体地讲是一种硅橡胶改性PVC防水卷材。
背景技术
随着科技的进步和人们环保意识的增强，人们也越来越多的关注到建筑的安全和质量问题，而防水材料是保护建筑安全和使用寿命的防水工程中必不可少的材料，为此，建筑防水材料成为人们研究的焦点。业界对建筑物防水材料的要求己从以往的单一防水功能开始向长寿命、阻燃、耐臭氧老化的多功能方向发展。
现有技术的建筑防水材料主要包括防水卷材、防水涂料、刚性防水材料、防水密封材料等，其中应用最为广泛的是防水卷材。防水卷材按材料的不同又可分为沥青基及改性沥青防水卷材、高分子防水卷材。建筑防水材料已经得到了空前的发展，SBS、APP改性沥青、三元乙丙橡胶防水材料、聚氨酯等高性能防水材料得到了快速的应用，在这些防水材料中，聚氯乙烯(PVC)由于其优异的力学性能，低廉的价格，成为目前应用最广泛的建筑防水材料之一。
在现有技术中，用于单层屋面的防水卷材一般为外露式PVC防水卷材，但PVC材料不耐氧、紫外老化，而且耐高低温性也较差，这些缺陷大大限制了PVC防水卷材的应用范围。
发明内容
有鉴于此，本发明所要解决的技术问题是，提供一种硅橡胶改性PVC防水卷材，以解决现有技术存在的不耐氧、紫外老化、耐高低温性较差的技术问题。
本发明的技术解决方案是，提供一种以下的硅橡胶改性PVC防水卷材，包括从上到下依次复合排布的第一无纺布层、硅橡胶改性PVC防水层和第二无纺布层；所述硅橡胶改性PVC防水层各成分的重量份数为：PVC树脂颗粒55-85份，硅橡胶5-15份，碳酸钙5-15份，增塑剂5-15份，紫外线吸收剂0.1-0.6份，抗氧剂0.1-0.3份，颜料3.5-4.5份。
采用以上配比，本发明与现有技术相比具有以下优点：采用甲基乙烯基硅橡胶作为PVC树脂的改性剂，由于硅橡胶分子是由半无机半有机的结构单元组成，从而使硅橡胶材料具有优异的耐高低温性、抗老化、耐臭氧、耐紫外，以及柔顺、憎水等性质，将硅橡胶作为改性PVC的主要材料，采用分子量在2000左右的聚酯为增塑剂，在保证PVC防水卷材较高的力学性能的同时，又能有效提高该材料的抗老化，耐紫外性能、耐高低温性能；本发明既保证了原有PVC材料的物理性能指标，又提高了产品的使用寿命和使用范围。
作为改进，所述的防水卷材由以下步骤制成：1)硅橡胶改性PVC防水层的各种原料组分按照以上配比混合，投入搅拌机进行搅拌共混，搅拌时间在3～5分钟；2)塑化：将经步骤1处理后的原料投入单螺杆挤出机，得到塑化物料所述单螺杆挤出机的加工温度为：一区：135℃～145℃，二区：155℃～165℃，三区：165℃～175℃，四区：165℃～175℃，五区：165℃～175℃，六区：165℃～175℃；六区：160℃～170℃；3)定型冷却：将步骤2中得到的塑化物料与无纺布进行滚压复合，温度控制不大于50℃；4)卷曲：将步骤3中得到的产物，牵引至卷曲机进行卷曲。
作为改进，所述无纺布层为聚酯纤维增强无纺布层，所述硅橡胶为甲基乙烯基硅橡胶。
作为改进，所述的增塑剂为分子量在1800-2200之间的聚酯增塑剂。由于分子量较小，与PVC分子结合能力差，挥发性较大，而且容易被油、溶剂等抽出，不耐迁移；分子量过大时，聚酯的粘稠度较高，增塑效果不明显；聚酯增塑剂分子量较大，具有低挥发、耐抽出、耐迁移、耐高温等优点，尤其是分子量为2000左右的聚酯作为增塑剂，既能保证具有较高的增塑效果，又能保证PVC卷材的稳定性。
作为改进，所述的硅橡胶改性PVC防水层的成分中还包括0.5份的活性白炭黑；所述活性白炭黑包括重量百分比为50％的无定形二氧化硅、三氧化铝、游离态氧化钙及重量百分比为10％泡沫碳。
具体实施方式
下面就具体实施例对本发明作进一步说明，但本发明并不仅仅限于这些实施例。
本发明涵盖任何在本发明的精髓和范围上做的替代、修改、等效方法以及方案。为了使公众对本发明有彻底的了解，在以下本发明优选实施例中详细说明了具体的细节，而对本领域技术人员来说没有这些细节的描述也可以完全理解本发明。
本发明提供一种硅橡胶改性PVC防水卷材，包括从上到下依次复合排布的第一无纺布层、硅橡胶改性PVC防水层和第二无纺布层；所述硅橡胶改性PVC防水层各成分的重量份数为：PVC树脂颗粒55-85份，硅橡胶5-15份，碳酸钙5-15份，增塑剂5-15份，紫外线吸收剂0.1-0.6份，抗氧剂0.1-0.3份，颜料3.5-4.5份。
所述的防水卷材由以下步骤制成：1)硅橡胶改性PVC防水层的各种原料组分按照以上配比混合，投入搅拌机进行搅拌共混，搅拌时间在3～5分钟；2)塑化：将经步骤1处理后的原料投入单螺杆挤出机，得到塑化物料所述单螺杆挤出机的加工温度为：一区：135℃～145℃，二区：155℃～165℃，三区：165℃～175℃，四区：165℃～175℃，五区：165℃～175℃，六区：165℃～175℃；六区：160℃～170℃；3)定型冷却：将步骤2中得到的塑化物料与无纺布进行滚压复合，温度控制不大于50℃；4)卷曲：将步骤3中得到的产物，牵引至卷曲机进行卷曲。
所述无纺布层为聚酯纤维增强无纺布层，所述硅橡胶为甲基乙烯基硅橡胶。
所述的增塑剂为分子量在1800-2200之间的聚酯增塑剂。由于分子量较小，与PVC分子结合能力差，挥发性较大，而且容易被油、溶剂等抽出，不耐迁移；分子量过大时，聚酯的粘稠度较高，增塑效果不明显；聚酯增塑剂分子量较大，具有低挥发、耐抽出、耐迁移、耐高温等优点，尤其是分子量为2000左右的聚酯作为增塑剂，既能保证具有较高的增塑效果，又能保证PVC卷材的稳定性。
所述的硅橡胶改性PVC防水层的成分中还包括0.5份的活性白炭黑；所述活性白炭黑包括重量百分比为50％的无定形二氧化硅、三氧化铝、游离态氧化钙及重量百分比为10％泡沫碳。活性白炭黑可以与水泥水化反应得到的氢氧化钙发生反应，从而使卷材与基体更加牢固的粘结在一起。
以上仅就本发明较佳的实施例作了说明，但不能理解为是对权利要求的限制。本发明不仅局限于以上实施例，其具体结构允许有变化。总之，凡在本发明独立权利要求的保护范围内所作的各种变化均在本发明的保护范围内。

Claims (5)

1.一种硅橡胶改性PVC防水卷材，包括从上到下依次复合排布的第一无纺布层、硅橡胶改性PVC防水层和第二无纺布层；其特征在于：所述硅橡胶改性PVC防水层各成分的重量份数为：PVC树脂颗粒55-85份，硅橡胶5-15份，碳酸钙5-15份，增塑剂5-15份，紫外线吸收剂0.1-0.6份，抗氧剂0.1-0.3份，颜料3.5-4.5份。
2.根据权利要求1所述的硅橡胶改性PVC防水卷材，其特征在于：所述的防水卷材由以下步骤制成：1)硅橡胶改性PVC防水层的各种原料组分按照以上配比混合，投入搅拌机进行搅拌共混，搅拌时间在3～5分钟；2)塑化：将经步骤1处理后的原料投入单螺杆挤出机，得到塑化物料所述单螺杆挤出机的加工温度为：一区：135℃～145℃，二区：155℃～165℃，三区：165℃～175℃，四区：165℃～175℃，五区：165℃～175℃，六区：165℃～175℃；六区：160℃～170℃；3)定型冷却：将步骤2中得到的塑化物料与无纺布进行滚压复合，温度控制不大于50℃；4)卷曲：将步骤3中得到的产物，牵引至卷曲机进行卷曲。
3.根据权利要求1所述的硅橡胶改性PVC防水卷材，其特征在于：所述无纺布层为聚酯纤维增强无纺布层，所述硅橡胶为甲基乙烯基硅橡胶。
4.根据权利要求1所述的硅橡胶改性PVC防水卷材，其特征在于：所述的增塑剂为分子量在1800-2200之间的聚酯增塑剂。
5.根据权利要求1或4所述的硅橡胶改性PVC防水卷材，其特征在于：所述的硅橡胶改性PVC防水层的成分中还包括0.5份的活性白炭黑；所述活性白炭黑包括重量百分比为50％的无定形二氧化硅、三氧化铝、游离态氧化钙及重量百分比为10％泡沫碳。
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CN105655057A (zh) * 2015-12-30 2016-06-08 合肥星辰电线电缆股份有限公司 一种耐扭曲软电缆的制备工艺
CN106938569A (zh) * 2017-04-24 2017-07-11 张红星 一种防水防腐卷材的加工方法
CN110154480A (zh) * 2019-06-11 2019-08-23 湖南益乘科技有限公司 一种pvc和无纺布的复合材料及其制备方法
CN110539534A (zh) * 2018-05-29 2019-12-06 山东金顶防水技术股份有限公司 一种耐根穿刺pvc防水卷材及其制备方法
CN112159571A (zh) * 2020-10-10 2021-01-01 温州一派塑业有限公司 一种抗冲击pvc片材及其制备方法

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Publication number Priority date Publication date Assignee Title
CN105655057A (zh) * 2015-12-30 2016-06-08 合肥星辰电线电缆股份有限公司 一种耐扭曲软电缆的制备工艺
CN106938569A (zh) * 2017-04-24 2017-07-11 张红星 一种防水防腐卷材的加工方法
CN110539534A (zh) * 2018-05-29 2019-12-06 山东金顶防水技术股份有限公司 一种耐根穿刺pvc防水卷材及其制备方法
CN110154480A (zh) * 2019-06-11 2019-08-23 湖南益乘科技有限公司 一种pvc和无纺布的复合材料及其制备方法
CN112159571A (zh) * 2020-10-10 2021-01-01 温州一派塑业有限公司 一种抗冲击pvc片材及其制备方法

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