CN112920633A - 一种超薄型水性重防腐组合物 - Google Patents

一种超薄型水性重防腐组合物 Download PDF

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CN112920633A
CN112920633A CN202110133033.3A CN202110133033A CN112920633A CN 112920633 A CN112920633 A CN 112920633A CN 202110133033 A CN202110133033 A CN 202110133033A CN 112920633 A CN112920633 A CN 112920633A
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张新新
田孝超
张姗
高利明
王立春
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Abstract

本发明公开了一种超薄型水性重防腐组合物，包括如下重量份数的组分：聚合物基体70‑100份、聚合铝硅酸盐15‑25份和无机填料10‑20份。本发明超薄型水性重防腐组合物不含苯、甲醛和砷等有害物质，与高温不会产生有毒气体及VOC排放，本发明为单层涂料，厚度为10‑50μm，无需加热一次施工即可，且耐盐雾可达1200‑4000h，同时可耐300‑450℃高温，长时间使用不起壳、褪色和变色，硬度在4‑6H，具有不粘污的特性。

Description

一种超薄型水性重防腐组合物
技术领域
本发明涉及防腐涂料领域，尤其涉及一种超薄型水性重防腐组合物。
背景技术
每年因腐蚀所造成的直接经济损失约占GDP的1％-4％，腐蚀生锈的钢铁约占我国每年钢铁产量的20％，损失约为8000亿元，占GDP的3％左右，因此防腐已越来越受到国家的重视。传统防腐材料为了增强附着力和表面效果，还在使用油性的有机化学油漆或防腐涂料，在制造和使用过程中，不断释放VOC，其中的甲醛、苯、砷、铬等化学物质对环境和人体造成极大伤害，是水、土壤、大气的主要污染源之一。
重防腐涂料能在严酷的腐蚀环境下应用并长效使用，是钢铁防腐常见的涂料之一。从成分上分醇酸树脂类、环氧树脂类、聚氨酯类以及氯化橡胶类等。重防腐涂料为多层涂料，从施工面向上一般为底漆、中涂漆和面漆等三层，甚至还需在面漆涂覆罩光漆，施工时也是分多次涂覆。重防腐涂料虽具有严酷环境下较强的耐腐蚀功效，但其施工较为复杂，比如热镀锌、电镀锌或达克罗防腐工艺，需对漆面进行反复的加热-冷却处理。此外，现有重防腐涂料由于具有多层结构，往往不易控制厚度，厚度为微米级，不适于对涂覆厚度要求严格的需求。
发明内容
本发明针对现有重防腐涂料多层施工、环保性低以及厚度大的问题，提供一种超薄型水性重防腐组合物，该组合物包括以下重量份的组分：聚合物基体70-100份、聚合铝硅酸盐15-25份和无机填料10-20份。
其中，聚合物基体可选自改性环氧树脂、水性硅树脂、耐高温硅树脂、硅烷水性树脂、水溶性硅树脂、耐高温纯硅树脂或无机硅耐高温树脂中的一种或多种；无机填料选纳米氧化铝、纳米二氧化钛、纳米氧化锌、纳米氧化镁、纳米氧化锆、纳米氢氧化镁或纳米氢氧化锌中的一种或多种的组合。
由于聚合物基体分散稳定性差，在上述组合物的基础上，本发明还可以添加5-10重量份的分散剂，如硬脂酸镁、聚乙二醇或丙二醇甲醚中的一种或多种。
本发明组合物可用作金属表面的重防腐涂层，属于单层涂层，涂覆操作较为方便，根据涂层工作环境选择适当的原材料配比，将所有原材料充分混合后涂覆均匀，自然晾干即可。
本发明的有益效果是：本发明超薄型水性重防腐组合物不含苯、甲醛和砷等有害物质，与高温不会产生有毒气体及VOC排放；本发明超薄型水性重防腐组合物为单层涂料，厚度为10-50μm，无需加热一次施工即可，且耐盐雾可达1200-4000h，同时可耐300-450℃高温，长时间使用不起壳、褪色和变色，硬度在4-6H，具有不粘污的特性。
具体实施方式
以下结合实例对本发明进行描述，所举实例只用于解释本发明，并非用于限定本发明的范围。
实施例1
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
改性环氧树脂100份、聚合铝硅酸盐15份、纳米氧化铝5份、纳米二氧化钛10份和纳米氧化锌5份。
实施例2
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
水性硅树脂70份、聚合铝硅酸盐20份、纳米氧化铝3份、纳米氧化锌2份、纳米氧化镁2份、纳米氢氧化锌3份和丙二醇甲醚10份。
实施例3
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
耐高温硅树脂80份、聚合铝硅酸盐20份、纳米氧化铝5份、纳米氧化锌5份和纳米氧化镁5份。
实施例4
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
硅烷水性树脂30份、聚合铝硅酸盐22份、纳米氧化铝1份、纳米二氧化钛2份、纳米氧化锌5份、纳米氧化镁1份、纳米氧化锆3份、纳米氢氧化镁1份、纳米氢氧化锌1份、硬脂酸镁1份、聚乙二醇3份和丙二醇甲醚4份。
实施例5
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
水溶性硅树脂90份、聚合铝硅酸盐17份、纳米氧化铝10份、纳米二氧化钛7份、聚乙二醇1份和丙二醇甲醚6份。
实施例6
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
耐高温纯硅树脂30份、聚合铝硅酸盐15份、纳米氧化铝5份、纳米二氧化钛7份和纳米氢氧化锌1份。
实施例7
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
无机硅耐高温树脂10份、聚合铝硅酸盐25份、纳米氧化铝7份、纳米二氧化钛13份、硬脂酸镁1份、聚乙二醇2份和丙二醇甲醚3份。
实施例8
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
改性环氧树脂25份、水性硅树脂25份、聚合铝硅酸盐20份、纳米氧化铝1份和纳米氧化锌10份。
实施例9
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
改性环氧树脂10份、水性硅树脂10份、耐高温硅树脂20份、硅烷水性树脂10份、水溶性硅树脂10份、耐高温纯硅树脂15份、无机硅耐高温树脂10份、聚合铝硅酸盐15份、纳米氧化铝1份、纳米二氧化钛0.5份、纳米氧化锌0.5份、纳米氧化镁3份、纳米氧化锆1份、纳米氢氧化镁3份和纳米氢氧化锌3份。
实施例10
一种超薄型水性重防腐组合物，包括如下重量份数的组分：
改性环氧树脂25份、水性硅树脂10份、耐高温硅树脂15份、硅烷水性树脂20份、聚合铝硅酸盐25份、纳米氧化铝12份、纳米二氧化钛8份和丙二醇甲醚10份。
将实施例1-10超薄型超薄型水性重防腐组合物按重量份称取后混合，涂覆在钢板上，涂层厚度为30μm，并做如表1所示的检测。
表1.检测项目及结果
Figure BDA0002923593660000041
Figure BDA0002923593660000051
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (6)

1.一种超薄型水性重防腐组合物，其特征在于，包括如下重量份数的组分：聚合物基体70-100份、聚合铝硅酸盐15-25份和无机填料10-20份。
2.根据权利要求1所述的超薄型水性重防腐组合物，其特征在于，还包括5-10重量份的分散剂。
3.根据权利要求1或2所述的超薄型水性重防腐组合物，其特征在于，所述聚合物基体选自改性环氧树脂、水性硅树脂、耐高温硅树脂、硅烷水性树脂、水溶性硅树脂、耐高温纯硅树脂或无机硅耐高温树脂中的一种或多种。
4.根据权利要求1或2所述的超薄型水性重防腐组合物，其特征在于，所述无机填料选纳米氧化铝、纳米二氧化钛、纳米氧化锌、纳米氧化镁、纳米氧化锆、纳米氢氧化镁或纳米氢氧化锌中的一种或多种。
5.根据权利要求2所述的超薄型水性重防腐组合物，其特征在于，所述分散剂选自硬脂酸镁、聚乙二醇或丙二醇甲醚中的一种或多种。
6.根据权利要求1-5任一项所述的超薄型水性重防腐组合物，其特征在于，其涂覆方法为：按重量份称取各组分，混合均匀后在涂覆面上涂抹均匀，自然晾干。
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