CN111978802A - 一种绝热保温涂料及其制备方法 - Google Patents
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Abstract
本发明属于涂料生产技术领域,尤其涉及一种绝热保温涂料及其制备方法。该制备方法是将水和分散剂、润湿剂、乙二醇、消泡剂混合均匀,加入羟乙基纤维素、pH调节剂搅拌5~10min使其溶解,再缓慢加入纳米二氧化硅气凝胶后1000~2000r/min分散20~60min,降低转速后,依次加入水性高弹乳液、水性硅丙乳液、成膜助剂、阻燃剂、微米空心玻璃微珠、杀菌剂、防腐剂,搅拌均匀,总体混合时间1‑2h,反应温度为10~50℃。本发明制得了一种新型的绝热保温涂料,该涂料具有较低热导系数的新型绝热保温涂料,可与多种底漆和面漆作为中间隔热层配套使用,具有良好的兼容效果,形成一套完整的防腐、保温、装饰体系。
Description
技术领域
本发明属于涂料生产技术领域,尤其涉及一种绝热保温涂料及其制备方法。
背景技术
保温板用于建筑材料的保温。保温板是以聚苯乙烯树脂为原料加上其他的原辅料与聚含物,通过加热混合同时注入催化剂,然后挤塑压出成型而制造的硬质泡沫塑料板,具有防潮、防水性能,可减少建筑物外围护结构厚度,从而增加室内使用面积。
传统的保温板具有以下缺陷:
1、使用的材料多属易燃产品,易发生火灾,燃烧时会产生大量有害气体,危害人们生命财产安全;
2、抗冲击性差,容易空鼓、起层、开裂、脱落,损坏后难以修复,后期维护成本高;
3、保温层质地疏松,防水性能差;
4、建筑物弃用后,大量建筑垃圾难以处理,对环境的影响大;
5、多层次施工,难度大,工序复杂繁琐,施工周期长,同样的面积比建筑绝热保温涂料施工多3-4倍时间。
鉴于传统保温板的缺陷,亟需开发一种新型的保温材料来解决上述问题。
发明内容
为解决上述技术问题,本发明的目的是提供一种绝热保温涂料及其制备方法,该绝热保温涂料选用水性复配乳液作为基料,选用纳米气凝胶和微米空心玻璃微珠为隔热填料,配合纤维素和各种功能助剂、以及阻燃剂复合而成,是一种具有较低热导系数的新型绝热保温涂料。
本发明提出的一种绝热保温涂料,包括以下重量份数的组分:
进一步的,纳米二氧化硅气凝胶的粒径为20-50nm,微米空心玻璃微珠的粒径为10~125μm。
进一步的,分散剂包括钠盐、铵盐中任意一种或多种。
进一步的,润湿剂包括烷基聚氧乙烯醚、非离子含羟基共聚物中任意一种或多种。
进一步的,pH调节剂为AMP-95(2-氨基-2-甲基-1-丙醇)。
进一步的,水性高弹乳液为丙烯酸酯乳液。
进一步的,水性硅丙乳液为不饱和键的有机硅单体和丙烯酸类单体共聚而成。
进一步的,成膜助剂为十二碳醇酯。
进一步的,阻燃剂包括聚磷酸铵、三聚氰胺、季戊四醇中的任意一种或多种。
本发明还提出了上述绝热保温涂料的制备方法,包括以下步骤:
将水和分散剂、润湿剂、乙二醇、消泡剂混合均匀,加入羟乙基纤维素、pH调节剂搅拌5~10min使其溶解,再缓慢加入纳米二氧化硅气凝胶后1000~2000r/min分散20~60min,降低转速后,依次加入水性高弹乳液、水性硅丙乳液、成膜助剂、阻燃剂、微米空心玻璃微珠、杀菌剂、防腐剂,搅拌均匀,总体混合时间1-2h,反应温度为10~50℃。
进一步的,pH调节剂调节pH为8-9。
借由上述方案,本发明至少具有以下优点:
(1)绝热保温涂料选用水性复配乳液作为基料,选用纳米二氧化硅气凝胶和微米空心玻璃微珠为隔热填料,配合纤维素和各种功能助剂,以及聚磷酸铵、三聚氰胺、季戊四醇等阻燃剂复合而成。是一种具有较低热导系数的新型绝热保温涂料。可与多种底漆和面漆作为中间隔热层配套使用,具有良好的兼容效果,形成一套完整的防腐、保温、装饰体系。
(2)采用柔软弹性抗裂技术。该涂料中加入水性高弹乳液使其具有良好的弹性,与墙体基层各层材料弹性模量变化指标相匹配逐层渐变,允许变形与限制变形相结合,能够随时分散和消解变形应力。基层变形适应性强,有效地防止墙面裂缝的产生。
(3)二氧化硅气凝胶微球作为绝热保温涂料的重要成分,它的含量和粒径对涂料的热导率会产生重要影响,热导率会随着气凝胶含量的增加而减小,并且会随着气凝胶粒径的减小而减小。本发明运用小粒径的纳米二氧化硅气凝胶微球,搭配微米空心玻璃微珠,通过调整用量使其绝热保温涂料热导率降到0.035W/(m·k)以下。绝热保温涂料里紧密排列的微米空心玻璃微珠内部含有稀薄的气体,其导热系数低,所以涂层具有非常好的隔热保温效果。玻璃微珠能够起到轴承的作用,摩擦力小,可以增强涂料的流动涂抹性能,施工更加便捷。
(6)绝热保温涂料里混合一定量阻燃剂,使该涂料阻燃时间超过15min,耐火等级为B1级。
(7)该涂料的低热导率在1.5mm涂层厚度时可以达到优异的隔热保温效果,有效降低了材料用量和施工成本。
(8)透气性好,呼吸功能强,既有很好的防水功能,又能排解保温层的水分。
(9)体系无空腔,抗负风压能力强,适用于多层及高层建筑。
(10)涂料施工简单,后期易维护,综合成本低。
具体实施方式
下面将结合实施例对本发明的实施方案进行详细描述,但是本领域技术人员将会理解,下列实施例仅用于说明本发明,而不应视为限定本发明的范围。
实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为可以通过市购获得的常规产品。
仪器和设备:GFJ350高速分散机、分散釜、电子称等。
一种绝热保温涂料,包括以下重量份数的原料:
上述绝热保温涂料的制备方法如下:
将水和分散剂、润湿剂、乙二醇、消泡剂混合均匀,加入羟乙基纤维素、pH调节剂搅拌5min使其溶解,再缓慢加入纳米二氧化硅气凝胶(20-50nm)后1500r/min分散30min,降低转速后,依次加入水性高弹乳液、水性硅丙乳液、成膜助剂、阻燃剂、微米空心玻璃微珠(10~125μm)、异噻唑啉酮类杀菌剂和防腐剂,搅拌均匀,总体混合时间90min。反应温度为50℃。
将反应制得的产品进行性能测试,结果如表1。
表1
从表1可以看到,本实施例制备的绝热保温涂料,具有较低的导热系数,以及较好的耐水性、耐碱性、耐中性盐雾、耐老化、耐洗刷性等性能。
虽然本发明已以较佳实施例公开如上,但其并非用以限定本发明,任何熟悉此技术的人,在不脱离本发明的精神和范围内,都可做各种的改动与修饰,因此本发明的保护范围应该以权利要求书所界定的为准。
Claims (10)
2.根据权利要求1所述的绝热保温涂料,其特征在于:纳米二氧化硅气凝胶的粒径为20-50nm,微米空心玻璃微珠的粒径为10~125μm。
3.根据权利要求1所述的绝热保温涂料,其特征在于:分散剂包括钠盐、铵盐中任意一种或多种。
4.根据权利要求1所述的绝热保温涂料,其特征在于:润湿剂包括烷基聚氧乙烯醚、非离子含羟基共聚物中任意一种或多种。
5.根据权利要求1所述的绝热保温涂料,其特征在于:pH调节剂为2-氨基-2-甲基-1-丙醇。
6.根据权利要求1所述的绝热保温涂料,其特征在于:水性高弹乳液为丙烯酸酯乳液。
7.根据权利要求1所述的绝热保温涂料,其特征在于:水性硅丙乳液为不饱和键的有机硅单体和丙烯酸类单体共聚而成。
8.根据权利要求1所述的绝热保温涂料,其特征在于:成膜助剂为十二碳醇酯。
9.根据权利要求1所述的绝热保温涂料,其特征在于:阻燃剂包括聚磷酸铵、三聚氰胺、季戊四醇中的任意一种或多种。
10.权利要求1-9任一项所述绝热保温涂料的制备方法,其特征在于:包括以下步骤:
将水和分散剂、润湿剂、乙二醇、消泡剂混合均匀,加入羟乙基纤维素、pH调节剂搅拌5~10min使其溶解,再缓慢加入纳米二氧化硅气凝胶后1000~2000r/min分散20~60min,降低转速后,依次加入水性高弹乳液、水性硅丙乳液、成膜助剂、阻燃剂、微米空心玻璃微珠、杀菌剂、防腐剂,搅拌均匀,总体混合时间1-2h,反应温度为10~50℃。
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CN112662250A (zh) * | 2020-12-18 | 2021-04-16 | 中国建筑西南设计研究院有限公司 | 单层微孔结构的白色辐射制冷涂料及其制备方法和应用 |
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