CN116676020A - 一种耐候性自修复涂料及其制备方法 - Google Patents
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Abstract
本发明提供一种耐候性自修复涂料及其制备方法,所述耐候性自修复涂料按质量百分比含有自修复组分5~10%,其余为基料,所述自修复组分为含有防腐填料的原料;基料包括:乙烯/三氯氟乙烯共聚体与四氟乙烯‑全氟烷基乙烯基醚共聚物按1:1的混合物、环氧树脂、丙烯酸树脂、助剂、固化剂、抗氧化剂、润湿剂、消泡剂、填料。自修复组分包括:修复微球、稀释剂;本发明克服了现有技术中的抗菌防霉涂料普遍存在的原料纯人工合成性、成本高和创新性差,耐候性、性能稳定性、与基材的粘结性、耐化学稳定性和抗菌防霉效果有待进一步提高等缺点;具有综合性能优异,性能稳定性和耐候性佳,抗菌防霉效果显著的优点。
Description
技术领域
本发明属于涂料制备领域,具体地说是一种耐候性自修复涂料及其制备方法。
背景技术
近年来,随着时代的进步及生活水平的提高,人们对改善家居环境的需求越来越迫切,对用于家居装饰装潢材料的性能要求越来越高,促使以涂料为代表的家居装饰装潢材料朝着功能化方向发展,功能性涂料以其优异的性能以及高功能附加值成为当前乃至今后一段时间涂料行业发展的主流方向,是未来涂料市场的明星产品,具有较高的潜在价值。墙面涂料直接刷涂于建筑物或构筑物的表面,与人们的生活关系更为密切,所有更注重装饰效果、功能性和环保性。现有技术中的普通墙面涂料不具有抑菌防霉功能,易滋生或繁殖各种有害细菌、霉菌、病毒等微生物,成为一个公众传播源,病原菌具有很强的传染性、生物毒性和腐蚀性,给人们的生命健康及人身财产带来较大威胁,同时,也破坏了涂料表面的美观,因此,开发具有抗菌防霉功能的涂料显得十分有必要。
目前对耐候性涂料的报道很多,而且现有的耐候性涂料基本上在普通的室外环境均能达到使用要求,但又都存在一些缺点。如漆膜受紫外线照射一定时间后容易开裂,漆膜附着力较差,长时间暴露在室外,耐冷热交替性、抗腐蚀等性能仍不够理想,导致漆膜的整体耐候性和使用寿命有限
综上,因此本发明提供了一种耐候性自修复涂料及其制备方法,以解决上述问题。
发明内容
为了解决上述技术问题,本发明提供一种耐候性自修复涂料及其制备方法,以解决现有技术中耐冷热交替性、抗腐蚀等性能仍不够理想,导致漆膜的整体耐候性和使用寿命有限等问题。
一种耐候性自修复涂料,所述耐候性自修复涂料按质量百分比含有自修复组分5~10%,其余为基料,所述自修复组分为含有防腐填料的原料;
基料包括:乙烯/三氯氟乙烯共聚体与四氟乙烯-全氟烷基乙烯基醚共聚物按1:1的混合物、环氧树脂、丙烯酸树脂、助剂、固化剂、抗氧化剂、润湿剂、消泡剂、填料。
自修复组分包括:修复微球、稀释剂。
进一步的,包括以下重量份原料乙烯/三氯氟乙烯共聚体与四氟乙烯-全氟烷基乙烯基醚共聚物按1:1的混合物40~60份、环氧树脂10~20份、丙烯酸树脂10~20份、助剂5~10份、固化剂0.3~0.8份、抗氧化剂0.5~2份、润湿剂0.2~0.3份、消泡剂0.3~0.5份、填料0~5份、修复微球2~5份、稀释剂1~10份。
进一步的,所述润湿剂为非离子型表面活性剂或阴离子型表面活性剂中的一种或两种以上按照任意比例组合,所述填料为滑石粉、火山灰、钛白粉、轻质碳酸钙粉中的至少一种,所述消泡剂为矿物油类消泡剂或有机硅消泡剂中的一种或两种以上按照任意比例组合。
进一步的,所述修复微球为负载缓释微球,缓蚀剂负载量为微球质量的10~30%,所述微球为聚二乙烯基苯微球、聚苯乙烯微球、聚脲甲醛微球或聚氨酯微球的其中一种,所述微球粒径为0.1~10μm。
进一步的,所述抗氧化剂制备:取野生蓝莓水洗,捣碎均浆,得蓝莓浆料,取蓝莓浆料按质量比1∶8~15∶0.1加入乙醇溶液、盐料混合搅拌,得混料,取混料超声波振荡,过滤,取滤液按质量比7~12∶1加入奥利克林混合搅拌,即得抗氧化剂。
进一步的,所述稀释剂为丙酮、甲乙酮、环己酮、苯、甲苯、二甲苯、乙醇、正丁醇、苯乙烯和乙酸乙酯中的至少一种,所述助剂为正丁醇、乙二醇、磷钨酸中的至少一种,所述固化剂为脂肪胺类固化剂、芳香胺类固化剂或聚酰胺类固化剂的其中一种。
一种耐候性自修复涂料的制备方法,包括以下步骤:
步骤一:称取规定重量份的基料,将基料与部分稀释剂进行混合搅拌,搅拌速率为400~500r/min下搅拌1~2小时,得到基料混合物;
步骤二:将修复微球与剩余的稀释剂进行搅拌,然后在搅拌速率为500~600r/min下搅拌5~10分钟,得到自修复混合物;
步骤三:最后将自修复混合物与基料混合物进行搅拌,在拌速率为500~600r/min下搅拌3~5分钟,将混合物通过双螺杆挤出机熔融挤出,经过冷却后,压片,再经过磨粉机进行粉碎,熟化2~4天后,得到自修复涂料。
进一步的,所述修复微球通过聚乙烯醇分散于水中,并且加入聚丙烯酸和壳聚糖搅拌,最后加入4,4'-二环己基甲烷二异氰酸酯,聚乙烯亚胺混合均匀后,制得的。
与现有技术相比,本发明具有如下有益效果:
1、本发明加入特别的助剂和填料使得涂层表面摩擦力更小,具有较优的耐划伤性,仅需在基材两面涂覆即可实现光伏材料的快速涂覆生产,修复微球与涂料基料共混在一起,涂料可以自动修复裂纹,同时在高湿度环境中,利用细小裂纹的毛细作用,修复微球中的异氰酸酯可以吸收缓慢渗入涂层中的水分,增强涂层材料中的防水性能。
2、本发明克服了现有技术中的抗菌防霉涂料普遍存在的原料纯人工合成性、成本高和创新性差,耐候性、性能稳定性、与基材的粘结性、耐化学稳定性和抗菌防霉效果有待进一步提高等缺点;具有综合性能优异,性能稳定性和耐候性佳,抗菌防霉效果显著的优点。
3、本发明通过添加抗氧化剂,具有优秀的热稳定性和色泽改良性。在高温下抗氧效果突出,能较好的抑制热氧和紫外线产生的变色问题,与受阻酚类抗氧剂,紫外线吸收剂,光稳定剂并用可形成一个具有最佳加工性,耐老化性,光稳定性及经济性的体系;铁系颜料有红、黄、棕、黑几大类,其除了具有耐候性、耐化学性、无毒、价格低廉的优点外,还具有色调明快、颜色鲜艳纯正、着色力高的特点,故能达到添加目的外,还能大大降低成本;硼砂做防蚀剂用,能有效防止外界物质对涂料腐蚀后影响其装饰和保护作用;乙烯/三氯氟乙烯共聚体与四氟乙烯用在本发明中,具有明显的增强涂料耐高温性能,并且具有耐酸、耐碱的优点。
附图说明
图1是本发明流程图。
实施方式
下面结合附图和实施例对本发明的实施方式作进一步详细描述。以下实施例用于说明本发明,但不能用来限制本发明的范围。
如图1所示,本发明提供一种耐候性自修复涂料,耐候性自修复涂料按质量百分比含有自修复组分5~10%,其余为基料,自修复组分为含有防腐填料的原料;
基料包括:乙烯/三氯氟乙烯共聚体与四氟乙烯-全氟烷基乙烯基醚共聚物按1:1的混合物、环氧树脂、丙烯酸树脂、助剂、固化剂、抗氧化剂、润湿剂、消泡剂、填料。
自修复组分包括:修复微球、稀释剂。
作为本发明的一种实施方式,包括以下重量份原料乙烯/三氯氟乙烯共聚体与四氟乙烯-全氟烷基乙烯基醚共聚物按1:1的混合物40~60份、环氧树脂10~20份、丙烯酸树脂10~20份、助剂5~10份、固化剂0.3~0.8份、抗氧化剂0.5~2份、润湿剂0.2~0.3份、消泡剂0.3~0.5份、填料0~5份、修复微球2~5份、稀释剂1~10份。
作为本发明的一种实施方式,润湿剂为非离子型表面活性剂或阴离子型表面活性剂中的一种或两种以上按照任意比例组合,填料为滑石粉、火山灰、钛白粉、轻质碳酸钙粉中的至少一种,消泡剂为矿物油类消泡剂或有机硅消泡剂中的一种或两种以上按照任意比例组合。
作为本发明的一种实施方式,修复微球为负载缓释微球,缓蚀剂负载量为微球质量的10~30%,微球为聚二乙烯基苯微球、聚苯乙烯微球、聚脲甲醛微球或聚氨酯微球的其中一种,微球粒径为0.1~10μm。
作为本发明的一种实施方式,抗氧化剂制备:取野生蓝莓水洗,捣碎均浆,得蓝莓浆料,取蓝莓浆料按质量比1∶8~15∶0.1加入乙醇溶液、盐料混合搅拌,得混料,取混料超声波振荡,过滤,取滤液按质量比7~12∶1加入奥利克林混合搅拌,即得抗氧化剂。
作为本发明的一种实施方式,稀释剂为丙酮、甲乙酮、环己酮、苯、甲苯、二甲苯、乙醇、正丁醇、苯乙烯和乙酸乙酯中的至少一种,助剂为正丁醇、乙二醇、磷钨酸中的至少一种,固化剂为脂肪胺类固化剂、芳香胺类固化剂或聚酰胺类固化剂的其中一种。
一种耐候性自修复涂料的制备方法,包括以下步骤:
步骤一:称取规定重量份的基料,将基料与部分稀释剂进行混合搅拌,搅拌速率为400~500r/min下搅拌1~2小时,得到基料混合物;
步骤二:将修复微球与剩余的稀释剂进行搅拌,然后在搅拌速率为500~600r/min下搅拌5~10分钟,得到自修复混合物;
步骤三:最后将自修复混合物与基料混合物进行搅拌,在拌速率为500~600r/min下搅拌3~5分钟,将混合物通过双螺杆挤出机熔融挤出,经过冷却后,压片,再经过磨粉机进行粉碎,熟化2~4天后,得到自修复涂料。
作为本发明的一种实施方式,修复微球通过聚乙烯醇分散于水中,并且加入聚丙烯酸和壳聚糖搅拌,最后加入4,4'-二环己基甲烷二异氰酸酯,聚乙烯亚胺混合均匀后,制得的。
本发明加入特别的助剂和填料使得涂层表面摩擦力更小,具有较优的耐划伤性,仅需在基材两面涂覆即可实现光伏材料的快速涂覆生产,修复微球与涂料基料共混在一起,涂料可以自动修复裂纹,同时在高湿度环境中,利用细小裂纹的毛细作用,修复微球中的异氰酸酯可以吸收缓慢渗入涂层中的水分,增强涂层材料中的防水性能,克服了现有技术中的抗菌防霉涂料普遍存在的原料纯人工合成性、成本高和创新性差,耐候性、性能稳定性、与基材的粘结性、耐化学稳定性和抗菌防霉效果有待进一步提高等缺点;具有综合性能优异,性能稳定性和耐候性佳,抗菌防霉效果显著的优点,通过添加抗氧化剂,具有优秀的热稳定性和色泽改良性。在高温下抗氧效果突出,能较好的抑制热氧和紫外线产生的变色问题,与受阻酚类抗氧剂,紫外线吸收剂,光稳定剂并用可形成一个具有最佳加工性,耐老化性,光稳定性及经济性的体系;铁系颜料有红、黄、棕、黑几大类,其除了具有耐候性、耐化学性、无毒、价格低廉的优点外,还具有色调明快、颜色鲜艳纯正、着色力高的特点,故能达到添加目的外,还能大大降低成本;硼砂做防蚀剂用,能有效防止外界物质对涂料腐蚀后影响其装饰和保护作用;乙烯/三氯氟乙烯共聚体与四氟乙烯用在本发明中,具有明显的增强涂料耐高温性能,并且具有耐酸、耐碱的优点。
本发明的实施方式是为了示例和描述起见而给出的,尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。
Claims (8)
1.一种耐候性自修复涂料,其特征在于:所述耐候性自修复涂料按质量百分比含有自修复组分5~10%,其余为基料,所述自修复组分为含有防腐填料的原料;
基料包括:乙烯/三氯氟乙烯共聚体与四氟乙烯-全氟烷基乙烯基醚共聚物按1:1的混合物、环氧树脂、丙烯酸树脂、助剂、固化剂、抗氧化剂、润湿剂、消泡剂、填料;
自修复组分包括:修复微球、稀释剂。
2.如权利要求1所述耐候性自修复涂料,其特征在于:包括以下重量份原料乙烯/三氯氟乙烯共聚体与四氟乙烯-全氟烷基乙烯基醚共聚物按1:1的混合物40~60份、环氧树脂10~20份、丙烯酸树脂10~20份、助剂5~10份、固化剂0.3~0.8份、抗氧化剂0.5~2份、润湿剂0.2~0.3份、消泡剂0.3~0.5份、填料0~5份、修复微球1~20份、稀释剂1~10份。
3.如权利要求1所述耐候性自修复涂料,其特征在于:所述润湿剂为非离子型表面活性剂或阴离子型表面活性剂中的一种或两种以上按照任意比例组合,所述填料为滑石粉、火山灰、钛白粉、轻质碳酸钙粉中的至少一种,所述消泡剂为矿物油类消泡剂或有机硅消泡剂中的一种或两种以上按照任意比例组合。
4.如权利要求1所述耐候性自修复涂料,其特征在于:所述修复微球为负载缓释微球,缓蚀剂负载量为微球质量的10~30%,所述微球为聚二乙烯基苯微球、聚苯乙烯微球、聚脲甲醛微球或聚氨酯微球的其中一种,所述微球粒径为0.1~10μm。
5.如权利要求1所述耐候性自修复涂料,其特征在于:所述抗氧化剂制备:取野生蓝莓水洗,捣碎均浆,得蓝莓浆料,取蓝莓浆料按质量比1∶8~15∶0.1加入乙醇溶液、盐料混合搅拌,得混料,取混料超声波振荡,过滤,取滤液按质量比7~12∶1加入奥利克林混合搅拌,即得抗氧化剂。
6.如权利要求1所述耐候性自修复涂料,其特征在于:所述稀释剂为丙酮、甲乙酮、环己酮、苯、甲苯、二甲苯、乙醇、正丁醇、苯乙烯和乙酸乙酯中的至少一种,所述助剂为正丁醇、乙二醇、磷钨酸中的至少一种,所述固化剂为脂肪胺类固化剂、芳香胺类固化剂或聚酰胺类固化剂的其中一种。
7.一种如权利要求1-6所述耐候性自修复涂料的制备方法,其特征在于:包括以下步骤:
步骤一:称取规定重量份的基料,将基料与部分稀释剂进行混合搅拌,搅拌速率为400~500r/min下搅拌1~2小时,得到基料混合物;
步骤二:将修复微球与剩余的稀释剂进行搅拌,然后在搅拌速率为500~600r/min下搅拌5~10分钟,得到自修复混合物;
步骤三:最后将自修复混合物与基料混合物进行搅拌,在拌速率为500~600r/min下搅拌3~5分钟,将混合物通过双螺杆挤出机熔融挤出,经过冷却后,压片,再经过磨粉机进行粉碎,熟化2~4天后,得到自修复涂料。
8.如权利要求7所述耐候性自修复涂料的制备方法,其特征在于:所述修复微球通过聚乙烯醇分散于水中,并且加入聚丙烯酸和壳聚糖搅拌,最后加入4,4'-二环己基甲烷二异氰酸酯,聚乙烯亚胺混合均匀后,制得的。
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