CN107760137B - 一种提高了长期耐水及耐候性能的屋面防水涂料 - Google Patents
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Abstract
本发明公开了一种提高了长期耐水及耐候性能的屋面防水涂料，该涂料的配方为：混合乳液300～500份，填料300～500份，水50～200份，2‑(3，4‑环氧环己烷基)乙基三甲氧基硅烷5～10份、偏钒酸铵1～3份、硫酸氢钾5～10份、聚己二酸‑1，2‑丙二醇酯5～8份、三乙醇胺2～5份、四丁基溴化铵1～3份，紫外光引发剂0.2～3份，以及成膜助剂、分散剂、防腐剂、消泡剂、增稠剂。本发明所提供的ERC屋面防水涂料是用于屋面上一种弹性无缝的水性环保防水涂料体系，并能牢固粘附于不同的屋面基材上，同时具有太阳光或热量反射功能的高性能涂料。与现有的防水涂料相比，本发明所提供的ERC屋面防水涂料进一步提高了其长期耐水性能、长期耐候性能、粘结性能和耐热性能，其不含有机溶剂和甲醛，是一款绿色环保的屋面防水涂料。
Description
技术领域
本发明属于高分子材料技术领域，具体涉及一种提高了长期耐水及耐候性能的屋面防水涂料。
背景技术
屋面是建筑物最上层的外围护构件，用于抵抗自然界的雨、雪、风、霜、太阳辐射、气温变化等不利因素的影响，保证建筑内部有一个良好的使用环境，屋面应满足坚固耐久、防水、保温、隔热、防火和抵御各其它种不良影响的功能要求。
由于屋面所处的环境恶劣，长期遭受风吹日晒雨淋，易造成屋顶材料的老化与渗水漏水。目前，目前我国屋面防水涂料用的聚氨酯类防水涂料价格高，并且含有有机溶剂，施工时容易污染环境，不符合国家环保的发展方向。改性沥青类防水材料耐候质量差，生产安全隐患大；因此需要一种专用的水性环保的耐候性屋面涂料用于屋面中使用。
目前已有相应的研究，例如申请号为CN201410071894.3的中国专利公开了一种金属屋面用高弹防水涂料，以纯丙烯酸乳液为基础，加入丙二醇、粉料、填料和其它助剂制成，其中各成分含量以重量份数计，纯丙烯酸乳液30-60，丙二醇1-3，粉料30-50，填料1-5，其他助剂0.1-4。申请号为CN201610664120.0的中国专利明公开了一种喷涂屋面专用防水材料，由以下重量份的原料组成：乳液400～550份，硅微粉80～120份，方解石粉300～400份，金红石钛白粉40～60份，去离子水30～50份，分散剂2～4份，消泡剂2～4份，防腐剂1.5～2.5份，紫外线吸收剂0.8～1.2份，防老剂0.8～1.2份；将硅微粉、方解石粉、金红石钛白粉、去离子水、分散剂、消泡剂、防腐剂、紫外线吸收剂、防老剂在高速下搅拌均匀，再低速添加乳液，搅拌均匀后过滤即得；所述乳液为丙烯酸乳液或丙烯酸乳液与脂肪族水性聚氨酯乳液的混合或丙烯酸乳液与水性环氧树脂乳液的混合。主要用于屋面防水。然而其配方中仅单纯使用丙烯酸乳液会导致长期耐水耐候性能不足，难以满足复杂的屋面使用环境。
发明内容
发明目的：本发明创造性的采用了新型的配方，针对现有技术中的不足之处，提供了一种提高了长期耐水及耐候性能的屋面防水涂料。
技术方案：本发明所提供的ERC屋面防水涂料是用于屋面上一种弹性无缝的水性环保防水涂料体系，并能牢固粘附于不同的屋面基材上，同时具有太阳光或热量反射功能的高性能涂料。
该涂料的配方为：混合乳液300～500份，填料300～500份，水50～200份，2-(3，4-环氧环己烷基)乙基三甲氧基硅烷5～10份、偏钒酸铵1～3份、硫酸氢钾5～10份、聚己二酸-1，2-丙二醇酯5～8份、三乙醇胺2～5份、四丁基溴化铵1～3份，紫外光引发剂0.2～3份，以及成膜助剂、分散剂、防腐剂、消泡剂、增稠剂。
进一步的，所述填料为高岭土、凹凸棒土、石英粉、滑石粉、钛白粉、ZnO、重钙、硅灰石、硫酸钡、云母粉等中的一种或多种。
进一步的，所述的混合乳液按重量份数计，由90～95份纯丙烯酸乳液和5～10份水性脂环族环氧树脂乳液组成。
进一步的，所述的脂环族环氧树脂选自：3，4-环氧环己基甲基3，4-环氧环己基甲酸酯、双((3，4-环氧环己基)甲基)己二酸酯、2-(3，4环氧环己烯-5，5-螺环-3，4-环氧)环己烷间二氧六环、1，2环氧环己烷4，5二甲酸二缩水甘油酯、3，4-环氧基-6-甲基环己烷甲酸-3，4-环氧基-6-甲基环己烷甲酯、3，4-环氧环己基甲基甲基丙烯酸酯、3-乙基-3-环氧丙烷甲醇、3，3'-[氧基双亚甲基]双[3-乙基]氧杂环丁烷、4，5-环氧四氢邻苯二甲酸二缩水甘油酯、4-乙烯基-1-环己烯二环氧化物、二环戊二烯环氧化物中的一种或者多种。
经过我们进一步的研究，我们发现在上述配方中添加脂环族树脂并配合添加紫外光引发剂，不仅可以进一步提高防水涂料的长期耐水性能、粘结性能，而且还具有良好的耐候性能，进一步的，所述的紫外光引发剂为选自UVI-6992(二苯基-(4-苯基硫)苯基锍六氟磷酸盐)、UVI-6976(二苯基-(4-苯基硫)苯基锍六氟锑酸盐)和KIP-100(聚合[2-羟基-2-甲基-1-[4-(1-甲基乙烯基)苯基]丙酮])中的一种或者多种。
上述配方中所述的成膜助剂、分散剂、防腐剂、消泡剂、增稠剂，无特殊要求，采用本领域常见的产品。
经过我们进一步的研究，我们发现如果在上述配方中再加入2-羟基-4-正辛氧基二苯甲酮，能够提高本发明的放紫外线效果，具体的2-羟基-4-正辛氧基二苯甲酮，0.5～1份。优选0.5份。
更进一步的的研究，我们尝试了在2-羟基-4-正辛氧基二苯甲酮中复配少量的4-苯甲酰氧基-2，2，6，6-四甲基哌啶，4-苯甲酰氧基-2，2，6，6-四甲基哌啶本身几乎没有吸收紫外线的能力，但可有效地捕获高分子材料在紫外线作用下产生的活性自由基，从而发挥光稳定效用。4-苯甲酰氧基-2，2，6，6-四甲基哌啶不着色，不污染，耐热加工性良好，与本发明所述的紫外线吸收剂并用，具有优良的协同效应。
具体的，改进配方中所述的2-羟基-4-正辛氧基二苯甲酮与4-苯甲酰氧基-2，2，6，6-四甲基哌啶复配，两者的比例为10～20:1，优选比例为20:1。
有益效果：本发明所提供的ERC屋面防水涂料是用于屋面上一种弹性无缝的水性环保防水涂料体系，并能牢固粘附于不同的屋面基材上，同时具有太阳光或热量反射功能的高性能涂料。与现有的防水涂料相比，本发明所提供的ERC屋面防水涂料的拉伸强度/断裂伸长率等性能受环境影响(水、热、紫外线)更小，其中拉伸强度性能性能甚至还可能有提高，进一步提高了其长期耐水性能、长期耐候性能、粘结性能和耐热性能，具有良好的经济效益。此外，本发明所述的水性涂料不含有机溶剂，健康环保无甲醛，VOC排放量极低，相比于溶剂涂料大大降低了环境污染，其生产工艺为简单的物理搅拌，无三废排放，是一款绿色环保的屋面防水涂料。
具体实施方式：
本实施例中所述的成膜助剂、分散剂、防腐剂、消泡剂、增稠剂，无特殊要求，采用本领域常见的产品，常规用量。
实施例1
混合乳液300份，填料300份，水50份，2-(3，4-环氧环己烷基)乙基三甲氧基硅烷5份、偏钒酸铵1份、硫酸氢钾5份、聚己二酸-1，2-丙二醇酯5份、三乙醇胺2份、四丁基溴化铵1份，紫外光引发剂0.2份，以及成膜助剂、分散剂、防腐剂、消泡剂、增稠剂。
所述填料为高岭土。所述的混合乳液按重量份数计，由90份纯丙烯酸乳液和5份水性脂环族环氧树脂乳液组成。所述的脂环族环氧树脂为1，2环氧环己烷4，5二甲酸二缩水甘油酯。所述的紫外光引发剂为二苯基-(4-苯基硫)苯基锍六氟磷酸盐。
实施例2
混合乳液500份，填料500份，水200份，2-(3，4-环氧环己烷基)乙基三甲氧基硅烷10份、偏钒酸铵3份、硫酸氢钾10份、聚己二酸-1，2-丙二醇酯5～8份、三乙醇胺5份、四丁基溴化铵3份，紫外光引发剂3份，以及成膜助剂、分散剂、防腐剂、消泡剂、增稠剂。
所述填料为高岭土。所述的混合乳液按重量份数计，由95份纯丙烯酸乳液和10份水性脂环族环氧树脂乳液组成。所述的脂环族环氧树脂为3，4-环氧环己基甲基甲基丙烯酸酯。所述的紫外光引发剂为二苯基-(4-苯基硫)苯基锍六氟锑酸盐。
实施例3
混合乳液200份，填料400份，水100份，2-(3，4-环氧环己烷基)乙基三甲氧基硅烷5份、偏钒酸铵1份、硫酸氢钾5份、聚己二酸-1，2-丙二醇酯5份、三乙醇胺2份、四丁基溴化铵1份，紫外光引发剂0.2份，以及成膜助剂、分散剂、防腐剂、消泡剂、增稠剂。
所述填料为高岭土。所述的混合乳液按重量份数计，由90～95份纯丙烯酸乳液和5～10份水性脂环族环氧树脂乳液组成。所述的脂环族环氧树脂为二环戊二烯环氧化物。所述的紫外光引发剂为聚合[2-羟基-2-甲基-1-[4-(1-甲基乙烯基)苯基]丙酮。
实施例4
涂料的基本配方与实施例3相同，不同之处在于，添加2-羟基-4-正辛氧基二苯甲酮0.5份，脂环族环氧树脂为3，4-环氧环己基甲基3，4-环氧环己基甲酸酯。
实施例5
涂料的基本配方与实施例3相同，不同之处在于，添加2-羟基-4-正辛氧基二苯甲酮1份，脂环族环氧树脂为双((3，4-环氧环己基)甲基)己二酸酯。
实施例6
涂料的基本配方与实施例3相同，不同之处在于，添加2-羟基-4-正辛氧基二苯甲酮1份、4-苯甲酰氧基-2，2，6，6-四甲基哌啶0.05份，脂环族环氧树脂为4，5-环氧四氢邻苯二甲酸二缩水甘油酯。
对实施例1～实施例6中所制得的产品根据JG/T 375-2012标准进行性能测试，性能完全符合标准要求，主要性能指标如下表所示：
从上述表格中可以看出，本发明所提供的ERC屋面防水涂料的拉伸强度/断裂伸长率等性能受环境影响(水、热、紫外线)很小，在经受水、热、紫外线等处理后，断裂伸长率仍完全符合国标要求，拉伸强度性能性能甚至还有提高，这表明本发明的防水涂料具有良好的长期耐水性能、长期耐候性能、粘结性能和耐热性能，其中，2-羟基-4-正辛氧基二苯甲酮1份的加入能够提高本品的防辐射能力，而微量4-苯甲酰氧基-2，2，6，6-四甲基哌啶的加入，不仅仅提高了防辐射能力，还略微提高了本品的耐水、耐热性能。
Claims (3)
1.一种提高了长期耐水及耐候性能的屋面防水涂料，其特征在于该涂料的配方为：混合乳液300~500份，填料300~500份，水50~200份，2-(3，4-环氧环己烷基)乙基三甲氧基硅烷5~10份、偏钒酸铵1~3份、硫酸氢钾5~10份、聚己二酸-1，2-丙二醇酯5~8份、三乙醇胺2~5份、四丁基溴化铵1~3份，紫外光引发剂0.2~3份，2-羟基-4-正辛氧基二苯甲酮，0.5份，以及成膜助剂、分散剂、防腐剂、消泡剂、增稠剂、4-苯甲酰氧基-2，2，6，6-四甲基哌啶；所述的2-羟基-4-正辛氧基二苯甲酮与4-苯甲酰氧基-2，2，6，6-四甲基哌啶复配，两者的比例为20:1；
所述的混合乳液按重量份数计，由90~95份纯丙烯酸乳液和5~10份水性脂环族环氧树脂乳液组成；
所述的紫外光引发剂为选自UVI-6992（二苯基-(4-苯基硫)苯基锍六氟磷酸盐）、UVI-6976（二苯基-(4-苯基硫)苯基锍六氟锑酸盐）和KIP-100（聚合[2-羟基-2-甲基-1-[4-(1-甲基乙烯基)苯基]丙酮]）中的一种或者多种。
2.如权利要求1所述的提高了长期耐水及耐候性能的屋面防水涂料，其特征在于所述填料为高岭土、凹凸棒土、石英粉、滑石粉、钛白粉、ZnO、重钙、硅灰石、硫酸钡、云母粉中的一种或多种。
3.如权利要求1所述的提高了长期耐水及耐候性能的屋面防水涂料，其特征在于所述的脂环族环氧树脂选自：3，4-环氧环己基甲基-3，4-环氧环己基甲酸酯、双((3，4-环氧环己基)甲基)己二酸酯、2-(3，4环氧环己烯-5，5-螺环-3，4-环氧)环己烷间二氧六环、1，2-环氧环己烷-4，5-二甲酸二缩水甘油酯、3，4-环氧基-6-甲基环己烷甲酸-3，4-环氧基-6-甲基环己烷甲酯、3，4-环氧环己基甲基甲基丙烯酸酯、3，3'-[氧基双亚甲基]双[3-乙基]氧杂环丁烷、4，5-环氧四氢邻苯二甲酸二缩水甘油酯、4-乙烯基-1-环己烯二环氧化物、二环戊二烯环氧化物中的一种或者多种。
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