CN117143491A - 一种丙烯酸纳米漆及其制备方法 - Google Patents
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Abstract
本发明属于涂料制备领域,具体涉及一种丙烯酸纳米漆及其制备方法。述丙烯酸纳米漆其成分组成为:纳米级丙烯酸树脂55~65%、环氧树脂8~12%、纳米颜料12~18%、附着力助剂1~4%、紫外助剂0.5~2%、其它助剂3~5%、溶剂5~8%;附着力助剂为硅烷偶联剂KH‑602、硅烷偶联剂KH‑792,促进环氧基的开环聚合反应的充分进行,并且有利于涂料附着力提高。抗紫外线助剂为:无机紫外线吸收剂和有机紫外线吸收剂混合使用。比于单一紫外线吸收剂的效果更优。大大延长了紫外线吸收剂的有效时间,提高耐候性能。本发明制备的油漆具有较好的耐候性、耐盐雾性和耐水性,漆膜光具有泽度高,附着力牢等优异性能。
Description
技术领域
本发明属于涂料制备领域,具体涉及一种丙烯酸纳米漆及其制备方法。
背景技术
丙烯酸面漆是以丙烯酸树脂为基料,并配以耐候性颜料、助剂等组成的单组份丙烯酸面漆。具有较好的耐候性、保光、保色,耐一般大气腐蚀环境,但长期使用后防腐、防水效果差。尤其是对于铁路工程配件的防护涂料,例如,铁路信号变压器箱、电缆盒等设备,常年暴露室外,面临着大气环境腐蚀带来的危害,需要防腐涂装进行防腐。在复杂严酷环境中,常年暴露室外的紫外强,涂料面临老化严重的问题,更需要一种抗紫外老化能力强的防腐涂装。虽然现有技术中存在较多钢材等金属表面的防腐防护,例如CN201611253264.3发动机防腐涂料,甲组份由下述质量份数的各原料组成:丙烯酸树脂45-55份;环氧树脂5-10份;钛白粉15-22份;炉黑-0.2-1.0份;分散剂0.2-1.0份;1%二甲苯硅油液0.2-0.5份;流平剂0.1-0.5份;消泡剂-0.1-0.5份;混合溶剂15-20-份;其中,乙组份由下述质量份数的各原料组成:N339060份;二甲苯40份。CN201610553322.8一种低温固化快干型耐油防腐涂料及其制备方法,甲组份:树脂Ⅰ5%~20%、树脂Ⅱ15%~40%、颜填料10%~35%、溶剂2%~15%、触变剂0.5%~2%、润湿分散剂0.2%~1%、流平剂0.3%~1%、消泡剂0.2%~1%;乙组份:固化剂10%~30%。CN201811013307.X一种防腐耐磨接线盒用涂料及其制备方法,丙烯酸树脂25-35份、环氧树脂20-26份、二甲苯15-19份、硅藻土17-22份、石墨粉8-13份、磷酸锌4-8份、纳米氧化锌6-12份、纳米二氧化钛10-14份、填料7-13份、防霉剂2-6份、固化剂3-7份和成膜助剂2-5份。目前的涂料中大多仅关注于防腐,而对于户外设备,其抗紫外线以及耐候性、使用寿命等方面未过多研究,这对于户外防护涂料至关重要。
发明内容
为了解决上述问题,本发明提出了一种丙烯酸纳米漆及其制备方法,本发明的丙烯酸漆是由丙烯酸树脂、环氧树脂、纳米颜料、附着力助剂、紫外线吸收剂、消泡剂和流平剂和溶剂组成油漆。通过各成分的优选和相互作用,使制备的油漆具有较好的耐候性、耐盐雾性和耐水性,漆膜光具有泽度高,附着力牢等优异性能。为了实现上述目的,本发明采用的技术方案为:
丙烯酸纳米漆按质量百分比计,其成分组成为:丙烯酸树脂55~65%、环氧树脂8~12%、纳米颜料12~18%、附着力助剂1~4%、紫外助剂0.5~2%、消泡剂和流平剂3~5%、溶剂5~8%。
进一步,丙烯酸树脂为:丙烯酸树脂BS 962(三木化工)。
进一步,环氧树脂为双酚A环氧树脂,环氧值为0.40~0.60mol/100g,进一步优选为E-51环氧树脂。
进一步,纳米颜料为钛白粉,或钛白粉和滑石粉、铁蓝、钼铬红、深铬黄、镉红、柠檬黄和炭黑中的一种或几种混合,纳米颜料的粒径低于40μm。
进一步,附着力助剂优选为:硅烷偶联剂KH-602、硅烷偶联剂KH-792中的一种或两种混合。相比于其它附着力助剂,优选KH-602、KH-792更有利于促进环氧基的开环反应的充分进行,并且有利于涂料附着力,耐盐雾、抗老化等性能提高。
进一步,抗紫外线助剂为:无机紫外线吸收剂和有机紫外线吸收剂按质量比10:0.5~1.5混合使用。具体为无机紫外线吸收剂为硫酸钡,有机紫外线吸收剂为紫外线吸收剂UV-1164。本发明优选出硫酸钡和UV-1164混合使用,相比于单一紫外线吸收剂的效果更优。尤其是硫酸钡和UV-1164、附着力助剂协同后相互保护,从而大大延长了紫外线吸收剂的有效时间,提高耐候性能。
进一步,消泡剂助剂为BYK-065、BYK-1790、BYK141或BYK390中的一种或多种;流平剂为BYK-300。
进一步,溶剂为醋酸丁酯和二甲苯按体积比40~60:40~60混合溶剂。
本发明丙烯酸纳米漆的制备方法为:
步骤一:丙烯酸树脂、环氧树脂、紫外助剂、助剂、50%溶剂加入分散罐中,于800~1200r/min速度下搅拌分散10~30min;
步骤二:向分散罐中加入纳米颜料、50%溶剂,于800~1200r/min速度下分散10~30分钟,进行研磨,研磨细度要求≤40μm,得到浆料;研磨后加入附着力助剂混合均匀,得到丙烯酸纳米漆。
与现有技术相比,本发明的有益效果为:本发明的丙烯酸漆是由纳米级丙烯酸树脂、环氧树脂、纳米颜料、附着力助剂、紫外线吸收剂、消泡剂和流平剂和溶剂组成油漆。通过各成分的优选和相互作用,使制备的油漆具有较好的耐候性、耐盐雾性和耐水性,漆膜光具有泽度高,附着力牢等优异性能。本发明通过对附着力助剂、紫外线吸收剂等助剂的优选,使制备的丙烯酸漆具有优异的耐候性能,大大提高了使用寿命,可以保证至少20年的户外使用寿命。
具体实施方式
实施例1
丙烯酸纳米漆按质量百分比计,其成分组成为:丙烯酸树脂BS-962 60%、环氧树脂E-5110%、钛白粉13%、硅烷偶联剂KH-7923%、紫外线助剂1%、消泡剂和流平剂5%、溶剂8%。紫外线助剂为硫酸钡和UV-1164按质量比10:1混合;溶剂为醋酸丁酯和二甲苯按体积比40:60混合溶剂。
步骤一:丙烯酸树脂BS-962、环氧树脂E-51、抗紫外线助剂、消泡剂和流平剂、总量50%溶剂加入分散罐中,于800r/min速度下搅拌分散30min;
步骤二:向分散罐中加入纳米颜料、剩下50%溶剂,于800r/min速度下分散30分钟,进行研磨,研磨细度要求≤40μm,得到浆料;研磨后加入硅烷偶联剂KH-792混合均匀,得到丙烯酸纳米漆。
实施例2
丙烯酸纳米漆按质量百分比计,其成分组成为:丙烯酸树脂BS 962 59%、环氧树脂E-5110%、钛白粉15%、硅烷偶联剂KH-6024%、紫外线助剂1%、消泡剂和流平剂3%、溶剂8%。紫外线助剂为硫酸钡和UV-1164按质量比10:1混合;溶剂为消泡剂和流平剂按体积比50:50混合溶剂。
步骤一:丙烯酸树脂、环氧树脂、紫外助剂、助剂、总量50%溶剂加入分散罐中,于800r/min速度下搅拌分散30min;
步骤二:向分散罐中加入纳米颜料、剩下50%溶剂,于800r/min速度下分散30分钟,进行研磨,研磨细度要求≤40μm,得到浆料;研磨后加入硅烷偶联剂KH-602混合均匀,得到丙烯酸纳米漆。
对比例1
丙烯酸纳米漆按质量百分比计,其成分组成为:丙烯酸树脂BS-962 60%、环氧树脂E-5110%、钛白粉13%、硅烷偶联剂KH-5503%、抗紫外线助剂1%、消泡剂和流平剂5%、溶剂8%。紫外线助剂为硫酸钡和UV-1164按质量比10:1混合;溶剂为醋酸丁酯和二甲苯按体积比40:60混合溶剂。
步骤一:丙烯酸树脂BS-962、环氧树脂E-51、抗紫外线助剂、消泡剂和流平剂、总量50%溶剂加入分散罐中,于800r/min速度下搅拌分散30min;
步骤二:向分散罐中加入纳米颜料、剩下50%溶剂,于800r/min速度下分散30分钟,进行研磨,研磨细度要求≤40μm,得到浆料;研磨后加入硅烷偶联剂KH-550混合均匀,得到丙烯酸纳米漆。
对比例2
丙烯酸纳米漆按质量百分比计,其成分组成为:丙烯酸树脂BS-962 60%、环氧树脂E-5110%、钛白粉13%、硅烷偶联剂KH-7923%、抗紫外线助剂1%、消泡剂和流平剂5%、溶剂8%。紫外线助剂为硫酸钡;溶剂为醋酸丁酯和二甲苯按体积比40:60混合溶剂。
步骤一:丙烯酸树脂BS-962、环氧树脂E-51、抗紫外线助剂、消泡剂和流平剂、总量50%溶剂加入分散罐中,于800r/min速度下搅拌分散30min;
步骤二:向分散罐中加入纳米颜料、剩下50%溶剂,于800r/min速度下分散30分钟,进行研磨,研磨细度要求≤40μm,得到浆料;研磨后加入硅烷偶联剂KH-792混合均匀,得到丙烯酸纳米漆。
对比例3
丙烯酸纳米漆按质量百分比计,其成分组成为:丙烯酸树脂BS-962 60%、环氧树脂E-5110%、钛白粉13%、硅烷偶联剂KH-7923%、抗紫外线助剂1%、消泡剂和流平剂5%、溶剂8%。紫外线助剂为紫外吸收剂UV-1164;溶剂为醋酸丁酯和二甲苯按体积比40:60混合溶剂。
步骤一:丙烯酸树脂BS-962、环氧树脂E-51、抗紫外线助剂、消泡剂和流平剂、总量50%溶剂加入分散罐中,于800r/min速度下搅拌分散30min;
步骤二:向分散罐中加入纳米颜料、剩下50%溶剂,于800r/min速度下分散30分钟,进行研磨,研磨细度要求≤40μm,得到浆料;研磨后加入硅烷偶联剂KH-792混合均匀,得到丙烯酸纳米漆。
将上述实施例和对比例制备的丙烯酸涂料涂覆在钢材表面后,涂覆厚度为50μm,在25±2℃放置后,测试其性能。性能标准如表1所示,性能结果如表2、表3所示。
表1
表2
表3
Claims (8)
1.一种丙烯酸纳米漆,其特征在于:丙烯酸纳米漆按质量百分比计,其成分组成为:丙烯酸树脂55~65%、环氧树脂8~12%、纳米颜料12~18%、附着力助剂1~4%、紫外助剂0.5~2%、其它助剂3~5%、溶剂5~8%;其它助剂为消泡剂和流平剂;所述附着力助剂为硅烷偶联剂KH-602、硅烷偶联剂KH-792中的一种或两种混合。
2.根据权利要求1所述丙烯酸纳米漆,其特征在于:所述丙烯酸树脂为丙烯酸树脂BS962。
3.根据权利要求1所述丙烯酸纳米漆,其特征在于:所述环氧树脂为双酚A环氧树脂E-51。
4.根据权利要求1所述丙烯酸纳米漆,其特征在于:所述纳米颜料为钛白粉,或钛白粉和滑石粉、铁蓝、钼铬红、深铬黄、镉红、柠檬黄和炭黑中的一种或几种混合,纳米颜料的粒径低于40μm。
5.根据权利要求1所述丙烯酸纳米漆,其特征在于:所述紫外助剂为无机紫外线吸收剂和有机紫外线吸收剂按质量比10:0.5~1.5混合使用;具体为无机紫外线吸收剂为硫酸钡,有机紫外线吸收剂为UV-1164。
6.根据权利要求1所述丙烯酸纳米漆,其特征在于:消泡剂助剂为BYK-065、BYK-1790、BYK141或BYK390中的一种或多种;流平剂为BYK-300。
7.根据权利要求1所述丙烯酸纳米漆,其特征在于:溶剂为醋酸丁酯和二甲苯按体积比40~60:40~60混合溶剂。
8.根据权利要求1-7任一项所述的丙烯酸纳米漆的制备方法,其特征在于:步骤一:丙烯酸树脂、环氧树脂、紫外助剂、助剂、50%溶剂加入分散罐中,于800~1200r/min速度下搅拌分散10~30min;
步骤二:向分散罐中加入纳米颜料、50%溶剂,于800~1200r/min速度下分散10~30分钟,进行研磨,研磨细度要求≤40μm,得到浆料;研磨后加入附着力助剂混合均匀,得到丙烯酸纳米漆。
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