CN115139625B - 一种耐侯外露型改性沥青防水卷材及其制备方法 - Google Patents
一种耐侯外露型改性沥青防水卷材及其制备方法 Download PDFInfo
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Abstract
本发明提供了一种耐侯外露型改性沥青防水卷材及其制备方法,涉及防水材料技术领域。本发明所述耐侯外露型改性沥青防水卷材由上至下依次为高分子固结喷涂层、玄武岩颗粒层、聚合物改性沥青层、胎体增强层、聚合物改性沥青层、聚乙烯膜防粘层,经改性沥青混合料制备与防水卷材制备两步制成。本发明的耐侯外露型改性沥青防水卷材能提高防水层的功能稳定性,提升建筑屋面防水层使用寿命。
Description
技术领域
本发明涉及防水材料技术领域,尤其涉及一种耐侯外露型改性沥青防水卷材及其制备方法。
背景技术
建筑物的防水功能是人们对其主要使用功能要求之一,防水工程决定了建筑物的防水功能,而防水工程质量的好坏,一定程度上取决于防水材料的性能。在建筑防水领域,改性沥青类防水卷材是重要防水材料之一,其主要用于建筑地下、屋面、以及隧道、公路桥梁、垃圾填埋场等防水工程中,能够帮建筑物抵御外界雨水、地下水、水蒸气的侵蚀破坏,保护建筑物内部使用空间免受水的影响。
目前,在建筑屋面防水工程中,常采用上表面带矿物粒料的改性沥青防水卷材进行防水处理,其中矿物粒料的作用主要是对防水层(即下面的改性沥青层)进行物理保护,并避免防水层长期暴露在自然环境中产生龟裂、鼓包等老化现象,以延长防水层的耐用年限。但目前防水卷材普遍存在以下问题:(1)矿物粒料无规则分散嵌入在上表面改性沥青涂层中,其在运输、施工和使用过程中极易脱落,进而影响对防水层的保护作用,加速防水层老化,致使建筑屋面发生渗漏;(2)矿物粒料间缝隙较大,表面粗糙不平整,自然环境中雨水、雪水或露水会由矿物粒料间缝隙进入改性沥青层,加速防水层老化;(3)在风的外力作用下,矿物粒料易脱落,雨后脱落的矿物粒料堆积在屋面雨落口处,形成堵塞,排水不畅,又加速防水层老化,致使建筑屋面渗漏。
发明内容
为解决上述问题,本发明提供了一种耐候外露型改性沥青防水卷材及其制备方法,以提高防水层功能稳定性,提升建筑屋面防水层使用寿命。本发明所述耐候外露型改性沥青防水卷材包括六层结构,由上至下依次为高分子固结喷涂层、玄武岩颗粒层、聚合物改性沥青层、胎体增强层、聚合物改性沥青层、聚乙烯膜防粘层;
所述高分子固结喷涂层包括如下重量百分比的原料:
有机硅共聚改性苯丙乳液30%~50%,水50%~60%,成膜助剂1.5%~2.5%,以上原料重量百分数之和为100%,所述成膜助剂为十二碳醇酯。
所述玄武岩颗粒级配如下:
12目20%~30%,14目15%~25%,18目15%~20%,24目10%~15%,30目10%~15%,以上原料重量百分数之和为100%。
所述聚合物改性沥青层包括如下重量百分比的原料:
90#沥青42.0%~47.0%,SBS改性剂4.5%~6.5%,APP改性剂3.0%~5.0%,石油树脂4.0%~8.0%,环烷油5.0%~10.0%,轮胎胶粉10.0%~15.0%,填充料15.0%~25.0%,以上原料重量百分数之和为100%。
所述胎体增强层为250g玻纤增强聚酯胎、250g聚酯胎、0.8~1.0mm高密度聚乙烯片材中的一种;
所述聚乙烯膜防粘层为20g/m2聚乙烯膜材。
进一步地,所述有机硅共聚改性聚苯丙乳液由有机硅单体与丙烯酸酯乳液共聚法制成,固含量为45%~49%,PH值为7~9,Tg值为25~29℃。
进一步地,所述90#沥青为蜡含量≤2.2%的重交通道路沥青。
进一步地,所述SBS改性剂由星型SBS4303与线性SBS1401按重量比为1:1的比例复合而成,所述APP改性剂为软化点100~120℃无规聚丙烯树脂。
进一步地,所述轮胎胶粉为60目磨细轮胎橡胶粉。
进一步地,所述石油树脂为萜烯树脂,能够增加玄武岩颗粒层和聚合物改性沥青层的粘附性。
进一步地,所述填充料为滑石粉或重钙,细度为200~400目。
本发明还提供了所述耐候外露型改性沥青防水卷材的制备方法,具体包括以下步骤:
(1)改性沥青混合料的制备:在反应釜中加入90#沥青、软化油、环烷油,搅拌状态下130℃脱水30min,依次加入SBS改性剂、APP改性剂和石油树脂,搅拌升温至180℃,通过胶体磨循环60min,加入轮胎胶粉,在185℃保温搅拌30min,停搅拌静置10min,最后,加入填充料搅拌40min,检测合格后得到改性沥青混合料;
(2)耐候外露型改性沥青防水卷材的制备:将胎体展开后烘干,胎体预浸后浸涂改性沥青混合料,覆膜或覆砂后水冷却,在玄武岩颗粒层上喷涂厚度为0.05~0.1mm的高分子固结喷涂层,鼓风烘干辅助成膜后冷却固结得到耐候外露型改性沥青防水卷材。
进一步地,所述聚合物改性沥青层混合料技术指标满足:低温-25℃合格,耐热性105℃合格,软化点120~125℃,针入度(23~28)1/10mm,渗油性≤1张。
进一步地,所述鼓风烘干温度为120~140℃,鼓风烘干时间为60~90s。
与现有技术相比,本发明的有益技术效果:
(1)本发明特定级配的玄武岩颗粒与聚合物改性沥青混合料粘附性优异,能够使玄武岩颗粒层均匀嵌入到聚合物改性沥青层,使其更加牢固稳定;
(2)本发明通过在防水卷材级配玄武岩颗粒层上表面喷涂高分子固结料,提高了产品的耐老化性能,且可以起到填充玄武岩颗粒层表面缝隙,使玄武岩颗粒相互粘结固结在防水卷材表面,有效阻止水通过玄武岩颗粒层间缝隙进入到下面聚合物改性沥青层,防止长期浸水对防水卷材的侵蚀老化,提升防水卷材的使用寿命;
(3)本发明化高分子固结喷涂层经过鼓风烘干和冷却工序,能够快速成膜,配合后续成型生产线的多个传动辊,使级配玄武岩颗粒在聚合物改性沥青层上均匀密实嵌入,且级配玄武岩颗粒层相对平整性和机械稳定性好,极大减轻了防水卷材在运输、施工和使用过程中因挤压、震动、摩擦导致的玄武岩颗粒脱落问题;
(4)本发明高分子固结喷涂层的主要成分是有机硅共聚改性聚苯丙乳液,成膜后坚实平整,能够对防水卷材提供优异的物理保护,还使防水卷材具有优良的耐候性、耐水性、耐磨性和良好的疏水性,大大提升了防水卷材使用寿命,使建筑屋面***可靠性增加。
附图说明
下面结合附图说明对本发明作进一步说明。
图1为本发明耐候外露型改性沥青防水卷材的产品结构图;
图2为本发明耐候外露型改性沥青防水卷材的制备工艺流程图。
附图标记说明:1、高分子固结喷涂层;2、玄武岩颗粒层;3、聚合物改性沥青层;4、胎体增强层;5、聚合物改性沥青层;6、聚乙烯膜防粘层。
具体实施方式
本发明提供了一种耐候外露型改性沥青防水卷材及,所述耐候外露型改性沥青防水卷材包括六层结构,由上至下依次为高分子固结喷涂层、玄武岩颗粒层、聚合物改性沥青层、胎体增强层、聚合物改性沥青层、聚乙烯膜防粘层;
所述高分子固结喷涂层包括如下重量百分比的原料:
有机硅共聚改性苯丙乳液30%~50%,水50%~60%,成膜助剂1.5%~2.5%,以上原料重量百分数之和为100%,所述成膜助剂为十二碳醇酯。
所述玄武岩颗粒级配如下:
12目20%~30%,14目15%~25%,18目15%~20%,24目10%~15%,30目10%~15%,以上原料重量百分数之和为100%。
所述聚合物改性沥青层包括如下重量百分比的原料:
90#沥青42.0%~47.0%,SBS改性剂4.5%~6.5%,APP改性剂3.0%~5.0%,石油树脂4.0%~8.0%,环烷油5.0%~10.0%,轮胎胶粉10.0%~15.0%,填充料15.0%~25.0%,以上原料重量百分数之和为100%。
所述胎体增强层为250g玻纤增强聚酯胎、250g聚酯胎、0.8~1.0mm高密度聚乙烯片材中的一种;
所述聚乙烯膜防粘层为20g/m2聚乙烯膜材。
在一个实施例中,所述有机硅共聚改性聚苯丙乳液由有机硅单体与丙烯酸酯乳液共聚法制成,固含量为45%~49%,PH值为7~9,Tg值为25~29℃。
在一个实施例中,所述90#沥青为蜡含量≤2.2%的重交通道路沥青。
在一个实施例中,所述SBS改性剂由星型SBS4303与线性SBS1401按重量比为1:1的比例复合而成,所述APP改性剂为软化点100~120℃无规聚丙烯树脂。
在一个实施例中,所述轮胎胶粉为60目磨细轮胎橡胶粉。
在一个实施例中,所述石油树脂为萜烯树脂,能够增加玄武岩颗粒层和聚合物改性沥青层的粘附性。
在一个实施例中,所述填充料为滑石粉或重钙,细度为200~400目。
本发明还提供了所述耐候外露型改性沥青防水卷材的制备方法,具体包括以下步骤:
(1)改性沥青混合料的制备:在反应釜中加入90#沥青、软化油、环烷油,搅拌状态下130℃脱水30min,依次加入SBS改性剂、APP改性剂和石油树脂,搅拌升温至180℃,通过胶体磨循环60min,加入轮胎胶粉,在185℃保温搅拌30min,停搅拌静置10min,最后,加入填充料搅拌40min,检测合格后得到改性沥青混合料;
(2)耐候外露型改性沥青防水卷材的制备:将胎体展开后烘干,胎体预浸后浸涂改性沥青混合料,覆膜或覆砂后水冷却,在玄武岩颗粒层上喷涂厚度为0.05~0.1mm的高分子固结喷涂层,鼓风烘干辅助成膜后冷却固结得到耐候外露型改性沥青防水卷材。
在一个实施例中,所述聚合物改性沥青层混合料技术指标满足:低温-25℃合格,耐热性105℃合格,软化点120~125℃,针入度(23~28)1/10mm,渗油性≤1张。
在一个实施例中,所述鼓风烘干温度为120~140℃,鼓风烘干时间为60~90s。
以下结合实施例对本发明提供的技术方案进行进一步说明。
实施例1
一种耐候外露型改性沥青防水卷材由上至下依次为高分子固结喷涂层、玄武岩颗粒层、聚合物改性沥青层、胎体增强层、聚合物改性沥青层、聚乙烯膜防粘层;
其中高分子固结喷涂层由以下重量百分比的原材料组成:
有机硅共聚改性苯丙乳液45.0%,水52.5%,十二碳醇酯2.5%;
所述有机硅共聚改性聚苯丙乳液由有机硅单体与丙烯酸酯乳液共聚法制成,固含量为48%,PH值为8,Tg值为27℃,购于江苏生达,型号为SD-5281纳米硅丙乳液;
玄武岩颗粒层中玄武岩颗粒级配如下:12目28.0%,14目22.0%,18目20.0%,24目15.0%,30目15.0%;
聚合物改性沥青层由如下重量百分比的原材料组成:90#沥青45.0%,SBS改性剂5.0%,APP改性剂3.5%,石油树脂5.5%,环烷油7.0%,轮胎胶粉13.0%,填充料21.0%;
所述胎体增强层用250g玻纤增强聚酯胎,购于安国市中建无纺布,型号为250g玻纤增强聚酯胎;所述聚乙烯膜防粘层用20g/m2聚乙烯膜材,购于河北鑫旺纸塑;所述90#沥青为蜡含量1.8%的重交通道路沥青;所述SBS改性剂由星型SBS4303(中国石化4303)与线性SBS1401(中国石化1401)按重量比为1:1的比例复配制成;所述APP改性剂为软化点110℃的无规聚丙烯树脂,购于青岛集思,型号为A35改性APAO;所述轮胎胶粉为60目磨细轮胎橡胶粉;所述石油树脂为萜烯树脂;所述填充料为400目滑石粉。
所述耐候外露型改性沥青防水卷材的制备方法如下:
(1)改性沥青混合料的制备:在反应釜中加入90#沥青、软化油、环烷油,搅拌状态下130℃脱水30min,依次加入SBS改性剂、APP改性剂和石油树脂,搅拌升温至180℃,通过胶体磨循环60min,加入轮胎胶粉,在185℃保温搅拌30min,停搅拌静置10min,最后,加入填充料搅拌40min,检测合格后得到改性沥青混合料;
(2)耐候外露型改性沥青防水卷材的制备:将胎体展开后烘干,胎体预浸后浸涂改性沥青混合料,覆膜或覆砂后水冷却,在玄武岩颗粒层上喷涂厚度为0.05mm的高分子固结喷涂层,鼓风烘干辅助成膜后冷却固结得到耐候外露型改性沥青防水卷材;
所述聚合物改性沥青层混合料技术指标满足低温-25℃合格,耐热性105℃合格,软化点123℃,针入度(25)1/10mm,渗油性1张;所述高分子固结喷涂层厚度为0.05mm;所述鼓风烘干温度为130℃,鼓风烘干时间为90s。
实施例2
一种耐候外露型改性沥青防水卷材由上至下依次为高分子固结喷涂层、玄武岩颗粒层、聚合物改性沥青层、胎体增强层、聚合物改性沥青层、聚乙烯膜防粘层;
其中高分子固结喷涂层由以下重量百分比的原材料组成:
有机硅共聚改性苯丙乳液50.0%,水47.5%,成膜助剂(补充成膜剂的具体种类)2.5%;
所述有机硅共聚改性聚苯丙乳液由有机硅单体与丙烯酸酯乳液共聚法制成,固含量为49%,PH值为8,Tg值为29℃,购于江苏生达,型号为SD-5281纳米硅丙乳液;
玄武岩颗粒层中玄武岩颗粒级配如下:12目30.0%,14目20.0%,18目20.0%,24目15.0%,30目15.0%;
聚合物改性沥青层由如下重量百分比的原材料组成:90#沥青46.0%,SBS改性剂5.5%,APP改性剂4.0%,石油树脂8.0%,环烷油8.0%,轮胎胶粉12.0%,填充料16.5%;
所述胎体增强层用250g玻纤增强聚酯胎,购于安国市中建无纺布,型号为250g玻纤增强聚酯胎;所述聚乙烯膜防粘层用20g/m2聚乙烯膜材,购于河北鑫旺纸塑;所述90#沥青为蜡含量1.8%的重交通道路沥青;所述SBS改性剂由星型SBS4303(中国石化4303)与线性SBS1401(中国石化1401)按重量比为1:1的比例复配制成;所述APP改性剂为软化点120℃的无规聚丙烯树脂,购于青岛集思,型号为A35改性APAO;所述轮胎胶粉为60目磨细轮胎橡胶粉;所述石油树脂为萜烯树脂;所述填充料为400目滑石粉。
所述耐候外露型改性沥青防水卷材的制备方法如下:
(1)改性沥青混合料的制备:在反应釜中加入90#沥青、软化油、环烷油,搅拌状态下130℃脱水30min,依次加入SBS改性剂、APP改性剂和石油树脂,搅拌升温至180℃,通过胶体磨循环60min,加入轮胎胶粉,在185℃保温搅拌30min,停搅拌静置10min,最后,加入填充料搅拌40min,检测合格后得到改性沥青混合料;
(2)耐候外露型改性沥青防水卷材的制备:将胎体展开后烘干,胎体预浸后浸涂改性沥青混合料,覆膜或覆砂后水冷却,在玄武岩颗粒层上喷涂厚度为0.05mm的高分子固结喷涂层,鼓风烘干辅助成膜后冷却固结得到耐候外露型改性沥青防水卷材;
所述聚合物改性沥青层混合料技术指标满足低温-25℃合格,耐热性105℃合格,软化点125℃,针入度(23)1/10mm,渗油性1张;所述鼓风烘干温度为140℃,鼓风烘干时间为90s。
测试例1
参照GB18242-2008《弹性体改性沥青防水卷材》中记载的方法对实施例1~2中制得的耐候外露型改性沥青防水卷材性能进行测定,以强凌SBSⅠPY M PE 4.010防水卷材作为对比,结果如下:
由表1可知,实施例1~2制得的改性沥青防水卷材矿物粒粘附性能远优于常规带矿物粒料防水卷材,耐热老化性和耐水性指标也优于常规产品。可见,本发明显著提高了防水卷材的耐老化性能,耐候性佳,延长了建筑防水使用寿命。
本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处。综上所述,本说明书内容不应理解为对本发明的限制。
Claims (7)
1.一种耐侯外露型改性沥青防水卷材,其特征在于,由上至下依次为高分子固结喷涂层、玄武岩颗粒层、聚合物改性沥青层、胎体增强层、聚合物改性沥青层、聚乙烯膜防粘层;
所述高分子固结喷涂层包括如下重量百分比的原料:
有机硅共聚改性聚丙烯酸酯乳液30~50%,水50~60%,成膜助剂1.5%~2.5%,以上原料重量百分数之和为100%,所述成膜助剂为十二碳醇酯;
所述玄武岩颗粒级配如下:
12目20~30%,14目15%~25%,18目15%~20%,24目10~15%,30目10~15%以上原料重量百分数之和为100%;
所述聚合物改性沥青层包括如下重量百分比的原料:
90#沥青42.0%~47.0%,SBS改性剂4.5%~6.5%,APP改性剂3.0%~5.0%,石油树脂4.0%~8.0%,环烷油5.0%~10.0%,轮胎胶粉10.0%~15.0%,填充料15.0%~25.0%,以上原料重量百分数之和为100%;
所述胎体增强层为250 g玻纤增强聚酯胎、250 g聚酯胎、0.8~1.0 mm高密度聚乙烯片材中的一种;
所述聚乙烯膜防粘层为20 g/m2聚乙烯膜材;
所述有机硅共聚改性聚丙烯酸酯乳液由有机硅单体与丙烯酸酯乳液共聚法制成,固含量为45%~49%,PH值为7~9,Tg值为25~29℃;
所述SBS改性剂由星型SBS4303与线性SBS1401按重量比为1:1的比例复合而成,所述APP改性剂为软化点100~120℃无规聚丙烯树脂;
所述石油树脂为萜烯树脂,能够增加玄武岩颗粒层和聚合物改性沥青层的粘附性。
2.根据权利要求1所述的一种耐侯外露型改性沥青防水卷材,其特征在于,所述90#沥青为蜡含量≤2.2%的重交通道路沥青。
3.根据权利要求1所述的一种耐侯外露型改性沥青防水卷材,其特征在于,所述轮胎胶粉为60目磨细轮胎橡胶粉。
4.根据权利要求1所述的一种耐侯外露型改性沥青防水卷材,其特征在于,所述填充料为滑石粉或重钙,细度为200~400目。
5.权利要求1~4任一项所述耐侯外露型改性沥青防水卷材的制备方法,其特征在于,包括以下步骤:
(1)改性沥青混合料的制备:在反应釜中加入90#沥青、环烷油,搅拌状态下130℃脱水30 min,依次加入SBS改性剂、APP改性剂和石油树脂,搅拌升温至180℃,通过胶体磨循环60min,加入轮胎胶粉,在185℃保温搅拌30 min,停搅拌静置10 min,最后,加入填充料搅拌40min,检测合格后得到改性沥青混合料;
(2)耐侯外露型改性沥青防水卷材的制备:将胎体展开后烘干,胎体预浸后浸涂改性沥青混合料,覆膜或覆砂后水冷却,在玄武岩颗粒层上喷涂厚度为0.05~0.1 mm的高分子固结喷涂层,鼓风烘干辅助成膜后冷却固结得到耐侯外露型改性沥青防水卷材。
6.根据权利要求5所述的耐侯外露型改性沥青防水卷材的制备方法,其特征在于,所述聚合物改性沥青层混合料技术指标满足:低温-25℃合格,耐热性105℃合格,软化点120~125℃,针入度(23~28)1/10 mm,渗油性≤1张。
7.根据权利要求5所述的耐侯外露型改性沥青防水卷材的制备方法,其特征在于,所述鼓风烘干温度为120~140℃,鼓风烘干时间为60~90 s。
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