CN104592801B - 一种水性自泳漆湿膜后处理液 - Google Patents

一种水性自泳漆湿膜后处理液 Download PDF

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CN104592801B
CN104592801B CN201510052709.0A CN201510052709A CN104592801B CN 104592801 B CN104592801 B CN 104592801B CN 201510052709 A CN201510052709 A CN 201510052709A CN 104592801 B CN104592801 B CN 104592801B
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廖立
谢克难
李小雨
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Sichuan University
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Abstract

本发明属涉及一种用于水性自泳漆涂层的后处理液及其使用方法，用来处理自泳漆湿膜，提高涂层的防腐性能。本发明的技术方案为：一种水性后处理液，包括活性组分和水，二者的质量份比为(1～40):100。所述的活性组分为碳酸锆铵或正丁醇锆等锆盐、或三氟化铁或硫酸亚铁等铁盐、或锆盐和铁盐的混合物，较好的使用例为碳酸锆铵和三氟化铁的质量份比为10:(1～4)的混合物。使用方法：首先按上述配比配后处理液，再使用喷涂或浸涂等方法将后处理液均匀地涂覆在自泳漆湿膜表面，待其与涂膜充分反应后，再进行后续的涂层固化处理，即可得到综合性能良好的自泳漆涂层。

Description

一种水性自泳漆湿膜后处理液
技术领域
本发明属于水性涂料领域，涉及一种水性自泳漆湿膜后处理液及其使用方法。
背景技术
自泳漆是指以丙烯酸乳液、环氧乳液等乳液为成膜物的一类水基底漆涂料，具有自动沉积、高度环保、耐候、耐蚀、保光、保色和施工方便等突出的优点，在汽车工业有广泛的应用。但在对工件进行自泳处理时，不可避免会存在自泳漆乳液破乳不充分的现象，形成涂层表面的浮漆，不利于后续施工，并会降低涂层的防腐性能。
发明内容
本发明的目的在于提供一种水性自泳漆湿膜后处理液及其使用方法，用来处理工件表面自沉积的自泳漆湿膜，提高自泳漆涂层的防腐性能。
本发明的技术方案为：一种水性后处理液，包括活性组分和水，二者的质量份比为(1～40):100。所述的活性组分为碳酸锆铵或正丁醇锆等锆盐、或三氟化铁或硫酸亚铁等铁盐、或锆盐和铁盐的混合物，较好的使用例为碳酸锆铵和三氟化铁的质量份比为10:(1～4)的混合物。
后处理液的使用方法：首先按上述配比配后处理液，再使用喷涂或浸涂等方法将后处理液均匀地涂覆在自泳漆湿膜表面，待其与涂膜充分反应后，再进行后续的涂层固化处理，即可得到综合性能良好的自泳漆涂层。
本发明选用锆盐或铁盐或两者的混合物作为后处理液的活性组分。活性组分在水溶液中电离出高价金属离子，有利于破坏带负电荷的电泳漆乳胶的双电层结构，保证自泳漆乳液的充分破乳，能有效提高涂层的防腐性能。
综上所述，本发明的有益效果是：
⑴ 本发明提供的后处理液的活性组分在水溶液中电离出高价金属离子，有利于破坏带负电荷的电泳漆乳胶的双电层结构，保证自泳漆乳液的充分破乳，能有效提高涂层的防腐性能。⑵ 本发明提供的后处理液是水性的，而且选用的活性成分均为无铬低毒性物质，环境友好。
具体实施方式
实施例 1
水性后处理液的配方为（分量为质量）：
碳酸锆铵：20
硫酸亚铁：5
水：500
具体操作为：按照上述配方，将原料混合均匀即得到水性后处理液；
该水性后处理液的使用方法为：使用浸涂方法将水性后处理液均匀地涂覆在自泳漆湿膜表面，再在要求温度下，进行充分的固化处理，即可得到综合性能良好的自泳漆涂层。
实施例 2
水性后处理液的配方为（分量为质量）：
正丁醇锆：20
三氟化铁：5
水：500
具体操作为：按照上述配方，将原料混合均匀即得到水性后处理液；
该水性后处理液的使用方法为：使用喷涂方法将水性后处理液均匀地涂覆在自泳漆湿膜表面，再在要求温度下，进行充分的固化处理，即可得到综合性能良好的自泳漆涂层。
实施例 3
水性后处理液的配方为（分量为质量）：
硝酸锆：30
水：500
具体操作为：按照上述配方，将原料混合均匀即得到水性后处理液；
该水性后处理液的使用方法为：使用浸涂方法将水性后处理液均匀地涂覆在自泳漆湿膜表面，再在要求温度下，进行充分的固化处理，即可得到综合性能良好的自泳漆涂层。

Claims (1)

1.一种水性自泳漆湿膜后处理液，包括锆盐或铁盐或两者的混合物和水，二者的质量份比为(1～40): 100；其中，所述的锆盐为碳酸锆铵、硝酸锆、正丁醇锆中的一种或多种混合物；其中，所述的铁盐为三氟化铁、硫酸亚铁中的一种或两种混合物。
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