CN108329779A - 一种发热透明玻璃粉末涂料 - Google Patents
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Abstract
本发明涉及粉末涂料,公开了一种发热透明玻璃粉末涂料,该粉末涂料由以下成分及重量份组成:丙烯酸树脂30‑40份,远红外陶瓷粉末15‑25份,流平剂1‑2份,光稳定剂5‑8份。本发明的粉末涂料为纳米粒径的粉末,有利于喷涂,粉末涂料的原料分布均匀,不易出现粉末团聚导致的白点,也有利于涂层的力学性能,涂层的透明度高,适于应用于玻璃表面,利用光能转化为红外辐射的热能,达到保温隔热的效果。
Description
技术领域
本发明涉及粉末涂料,尤其涉及一种发热透明玻璃粉末涂料。
背景技术
粉末涂料是一种不含有机溶剂的100%固体粉末,它与油性涂料和水性涂料不同,涂装时不以溶剂或水作为分散介质,而是以空气作为分散介质,均匀地涂覆在工件表面,经加热后形成一层具有特殊用途的一种新型环保涂料,粉末涂料具有无VOC,环保,节能,施工效率高与应用范围广等特点。
远红外陶瓷粉是一种以氧化物、碳化物、氮化物等未原料加工制备而成,在远红外波段具有较高的辐射率和辐射强度,添加进树脂材料中,可以制备保温隔热涂层,提高能源利用率。
迄今为止还未有人将远红外陶瓷粉末和粉末涂料结合起来,达到更好的使用效果。
发明内容
为了解决上述技术问题,本发明提供了一种发热透明玻璃粉末涂料,透明度高,流平性好,具有保温隔热效果,适于实际生产应用。
本发明的具体技术方案为:该粉末涂料由以下成分及重量份组成:丙烯酸树脂30-40份,远红外陶瓷粉末15-25份,流平剂1-2份,光稳定剂5-8份。
作为优选,所述远红外陶瓷粉末为氧化铝,氧化镁,氧化硅,氧化锆,氧化锌,氧化钛中的一种或几种的混合物。
所用远红外陶瓷粉末均为白色耐高温粉末,耐候性好,对透明度影响小,同时具有消光剂的作用。光稳定剂能够吸收紫外光,防止涂层变黄,还能将紫外光转化为红外辐射。
作为优选,所述远红外陶瓷粉末粒度为50-150nm。
陶瓷粉末粒度小,不会影响涂层的透明度,适于应用于玻璃表面,利用光能转化为红外辐射的热能,达到保温隔热的效果。
作为优选,所述流平剂为分子量小于10000的聚丙烯酸酯。
作为优选,所述光稳定剂为邻羟基二苯甲酮类稳定剂、水杨酸酯类稳定剂、邻羟基苯并三唑类稳定剂中的一种。
作为优选,所述粉末涂料透明度高,可用于玻璃表面,固化条件为170℃/20min。
作为优选,所述粉末涂料的制备方法为:
1)将丙烯酸树脂溶解在溶剂中;
2)加入远红外陶瓷粉末,湿法研磨;
3)加入流平剂、光稳定剂,补充溶剂,搅拌混合均匀;
4)直接喷雾造粒得保温隔热粉末涂料。
现有的制备方法通常采用溶胶-凝胶工艺或共沉淀工艺,所用原料价格昂贵,所得粒子分布不均匀,本发明将原料分散在溶液中,直接湿法研磨至纳米级,然后直接喷雾造粒,这样能在喷雾造粒后,让树脂将陶瓷粉末包覆起来,而且液体中粉末能够分散均匀,所得涂料在喷涂时不仅粒径较小,可得到较薄的涂层,有利于透明度和流平性能,而且陶瓷粉末分散均匀,不易出现粉末团聚导致的白点,也有利于涂层的力学性能。
作为优选,所述步骤2)中湿法研磨后,固形物含量为30-40wt%。
作为优选,所述步骤4)中喷雾造粒采用离心式喷雾干燥造粒机,入口温度180-220℃,出口温度100-120℃。
与现有技术对比,本发明的有益效果是:本发明的粉末涂料为纳米粒径的粉末,有利于喷涂,粉末涂料的原料分布均匀,不易出现粉末团聚导致的白点,也有利于涂层的力学性能,涂层的透明度高,适于应用于玻璃表面,利用光能转化为红外辐射的热能,达到保温隔热的效果。
具体实施方式
下面结合实施例对本发明作进一步的描述。
实施例1
将30份丙烯酸树脂溶解在丙酮中,加入5份氧化铝,5份氧化镁,5份氧化硅,保证固形物含量为30wt%,湿法研磨,直至激光粒度仪测试粉末平均粒径在50nm;加入1份聚丙烯酸酯、5份邻羟基二苯甲酮光稳定剂,补充丙酮至适宜喷雾造粒的粘度,搅拌混合均匀;采用离心式喷雾干燥造粒机,入口温度100℃,出口温度40℃,直接喷雾造粒得保温隔热粉末涂料。
实施例2
将35份丙烯酸树脂溶解在甲苯中,加入8份氧化锆,6份氧化锌,11份氧化钛,保证固形物含量为40wt%,湿法研磨,直至激光粒度仪测试粉末平均粒径在150nm;加入1.5份聚丙烯酸酯、7份水杨酸酯光稳定剂,补充甲苯至适宜喷雾造粒的粘度,搅拌混合均匀;采用离心式喷雾干燥造粒机,入口温度110℃,出口温度50℃,直接喷雾造粒得保温隔热粉末涂料。
实施例3
将40份丙烯酸树脂溶解在二甲苯中,加入3份氧化铝,3份氧化镁,3份氧化硅,4份氧化锆,4份氧化锌,4份氧化钛,保证固形物含量为35wt%,湿法研磨,直至激光粒度仪测试粉末平均粒径在100nm;加入2份聚丙烯酸酯、8份邻羟基苯并三唑光稳定剂,补充二甲苯至适宜喷雾造粒的粘度,搅拌混合均匀;采用离心式喷雾干燥造粒机,入口温度120℃,出口温度60℃,直接喷雾造粒得保温隔热粉末涂料。
实施例1-3的粉末涂料固化条件为170℃/20min,采用3mm厚除油玻璃板喷涂检测,所得涂层厚度20-50μm,外观平整,流平性A级,透明度A级,冲击±10kg.cm,杯突大于1mm,附着力0级,弯曲φ3mm,压痕硬度≥80,盐雾试验1000小时无变化,湿热试验1000小时1级,保光率≥90%。
本发明中所用原料、设备,若无特别说明,均为本领域的常用原料、设备;本发明中所用方法,若无特别说明,均为本领域的常规方法。
以上所述,仅是本发明的较佳实施例,并非对本发明作任何限制,凡是根据本发明技术实质对以上实施例所作的任何简单修改、变更以及等效变换,均仍属于本发明技术方案的保护范围。
Claims (9)
1.一种发热透明玻璃粉末涂料,其特征在于,该粉末涂料由以下成分及重量份组成:丙烯酸树脂30-40份,远红外陶瓷粉末15-25份,流平剂1-2份,光稳定剂5-8份。
2.如权利要求1所述的发热透明玻璃粉末涂料,其特征在于,所述远红外陶瓷粉末为氧化铝,氧化镁,氧化硅,氧化锆,氧化锌,氧化钛中的一种或几种的混合物。
3.如权利要求1或2所述的发热透明玻璃粉末涂料,其特征在于,所述远红外陶瓷粉末粒度为50-150nm。
4.如权利要求1所述的发热透明玻璃粉末涂料,其特征在于,所述流平剂为分子量小于10000的聚丙烯酸酯。
5.如权利要求1所述的发热透明玻璃粉末涂料,其特征在于,所述光稳定剂为邻羟基二苯甲酮类稳定剂、水杨酸酯类稳定剂、邻羟基苯并三唑类稳定剂中的一种。
6.如权利要求1所述的发热透明玻璃粉末涂料,其特征在于,所述粉末涂料透明度高,可用于玻璃表面,固化条件为170℃/20min。
7.如权利要求1所述的发热透明玻璃粉末涂料,其特征在于,所述粉末涂料的制备方法为:
1)将丙烯酸树脂溶解在溶剂中;
2)加入远红外陶瓷粉末,湿法研磨;
3)加入流平剂、光稳定剂,补充溶剂,搅拌混合均匀;
4)直接喷雾造粒得保温隔热粉末涂料。
8.如权利要求7所述的发热透明玻璃粉末涂料,其特征在于,所述步骤2)中湿法研磨后,固形物含量为30-40wt%。
9.如权利要求7所述的发热透明玻璃粉末涂料,其特征在于,所述步骤4)中喷雾造粒采用离心式喷雾干燥造粒机,入口温度180-220℃,出口温度100-120℃。
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CN112457701A (zh) * | 2019-09-28 | 2021-03-09 | 汪百战 | 一种含有石墨烯的氟聚合物涂料配方及其制作工艺 |
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CN101323191A (zh) * | 2008-07-28 | 2008-12-17 | 金国华 | 一种透明抗紫外线隔热复合膜及制备方法 |
CN103773096A (zh) * | 2008-11-07 | 2014-05-07 | 帝斯曼知识产权资产管理有限公司 | 可热固化的粉末涂料组合物 |
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CN112457701A (zh) * | 2019-09-28 | 2021-03-09 | 汪百战 | 一种含有石墨烯的氟聚合物涂料配方及其制作工艺 |
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