CN108219616A - 一种保温隔热粉末涂料的制备方法 - Google Patents
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Abstract
本发明涉及涂料的制备方法，公开了一种保温隔热粉末涂料的制备方法，该制备方法包含以下步骤：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。本发明制备方法简单易行，成本较低，所得粉末涂料的为纳米粒径的粉末，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
本发明涉及涂料的制备方法，尤其涉及一种保温隔热粉末涂料的制备方法。
背景技术
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，但是，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，为解决这些问题，本发明提出了一种新的制备方法。
发明内容
为了解决上述技术问题，本发明提供了一种保温隔热粉末涂料的制备方法，采用湿法研磨和喷雾造粒的方法制备含远红外陶瓷粉的粉末涂料，所得产品透明度高，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：一种保温隔热粉末涂料的制备方法，其特征在于：该制备方法包含以下步骤：
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1）中溶剂为丙酮、甲苯或二甲苯。
作为优选，所述步骤2）中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。
作为优选，所述步骤3）中流平剂为分子量小于10000的聚丙烯酸酯。
作为优选，所述步骤3）中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。
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，所述步骤2）中湿法研磨至陶瓷粉末粒度为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100-120℃，出口温度40-60℃。
作为优选，所述保温隔热粉末涂料透明度高，可用于玻璃表面，固化条件为170℃/20min。
与现有技术对比，本发明的有益效果是：本发明制备方法简单易行，成本较低，所得粉末涂料的为纳米粒径的粉末，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
将丙烯酸树脂溶解在丙酮中，加入氧化铝，氧化镁，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150nm；加入聚丙烯酸酯、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
将丙烯酸树脂溶解在甲苯中，加入氧化锆，氧化锌，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50nm；加入聚丙烯酸酯、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
将丙烯酸树脂溶解在二甲苯中，加入氧化铝，氧化镁，氧化硅，氧化锆，氧化锌，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；加入聚丙烯酸酯、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)
1.一种保温隔热粉末涂料的制备方法，其特征在于：该制备方法包含以下步骤：
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。
2.如权利要求1所述的保温隔热粉末涂料的制备方法，其特征在于，所述步骤1）中溶剂为丙酮、甲苯或二甲苯。
3.如权利要求1所述的保温隔热粉末涂料的制备方法，其特征在于，所述步骤2）中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。
4.如权利要求1所述的保温隔热粉末涂料的制备方法，其特征在于，所述步骤3）中流平剂为分子量小于10000的聚丙烯酸酯。
5.如权利要求1所述的保温隔热粉末涂料的制备方法，其特征在于，所述步骤3）中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或3所述的保温隔热粉末涂料的制备方法，其特征在于，所述步骤2）中湿法研磨至陶瓷粉末粒度为50-150nm。
7.如权利要求1或3所述的保温隔热粉末涂料的制备方法，其特征在于，所述步骤2）中湿法研磨后，固形物含量为30-40wt%。
8.如权利要求1所述的保温隔热粉末涂料的制备方法，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℃。
9.如权利要求1所述的保温隔热粉末涂料的制备方法，其特征在于，所述保温隔热粉末涂料透明度高，可用于玻璃表面，固化条件为170℃/20min。
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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 |
| CN104449200A (zh) * | 2013-09-25 | 2015-03-25 | 苏州裕丰装饰门窗有限公司 | 一种隔热保温粉末涂料及其制备方法、涂覆方法、涂层和应用 |
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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 |
| CN104449200A (zh) * | 2013-09-25 | 2015-03-25 | 苏州裕丰装饰门窗有限公司 | 一种隔热保温粉末涂料及其制备方法、涂覆方法、涂层和应用 |
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