CN104530906A - 一种水性耐腐涂料及其制备方法 - Google Patents

一种水性耐腐涂料及其制备方法 Download PDF

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CN104530906A
CN104530906A CN201410824530.8A CN201410824530A CN104530906A CN 104530906 A CN104530906 A CN 104530906A CN 201410824530 A CN201410824530 A CN 201410824530A CN 104530906 A CN104530906 A CN 104530906A
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李可
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    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract

本发明公开了一种水性耐腐涂料及其制备方法，该涂料制备方法是：取适量油酸钠加入到去离子水中，混合均匀后再缓慢滴入环氧树脂进行乳化，乳化后再把云母粉、锌粉、三聚合磷酸铝、聚酰胺树脂依次投放到乳液中，然后将混合物置于分散机中在分散搅拌处理，处理后即得一种水性耐腐涂料。由于锌粉电极电位低，可产生保护电位，其次，可与空气中的气体反应生成了一种不溶于水的锌腐蚀产物，从而成为有效的屏蔽保护层，改善了涂料的耐腐蚀性能。

Description

一种水性耐腐涂料及其制备方法
技术领域
本发明涉及一种复合涂料，特别涉及一种改性涂料，属于涂料领域。
发明内容
涂料即是我们常说的油漆和乳胶漆的统称，它是由高分子的成膜物质和其它的物质混合而成的，能够在基材的表面形成一层牢固的高分子膜的材料，而以水作为分散介质或者溶剂的都可称为水性涂料。
 科技的进步带动了涂料行业的高速发展，不断有新的涂料品种被研究和开发出来。为满足涂料在装饰性、耐候性、环境保护、节省能源、方便施工等方面更高的要求，近年来国外相继开发了新型、优质、高档的涂料。国外涂料今后发展的趋势是向着水性、耐候性、抗污染性方向发展。由于溶剂型涂料对环境和人类健康都危害很大，因此世界各国都十分重视发展水性涂料，并制订有关法规，严格限制涂料中VOC (挥发性有机物)的含量，使用溶剂型涂料的比例越来越小，取而代之的是水性涂料。
水性涂料代表着低污染涂料发展的主要方向，为了不断改善其性能，扩大其应用范围，近半个世纪以来国内外对水性涂料进行了大量的研究，其中水性环氧树脂是目前该领域研究的热点，水性环氧树脂具有优异的附着力，为了进一步提高树脂的抗腐蚀能力，本发明提供一种添加锌粉的树脂涂料。
 由于锌的电极电位是-0.763V，在原电池中锌作为阳极，首先牺牲自己，失去电子，产生保护电位，其次，不溶性涂膜和原电池保护的产物，逐渐与空气中的气体反应生成了一种不溶于水的锌腐蚀产物，这种腐蚀副产物是锌的氧化物、氢氧化物或碳酸盐类，从而成为有效的屏蔽保护层，这些腐蚀产物填充在无机锌涂层的微孔中 , 形成了一个可以隔绝水和氧的屏蔽层。
发明内容
本发明的目的是提供一种水性耐腐涂料及其制备方法，其特征在于，该涂料由环氧树脂、三聚合磷酸铝、云母粉、聚酰胺树脂固化剂、油酸钠、锌粉和去离子水组成，其重量百分比为：
环氧树脂   40-60%
三聚合磷酸铝   5-10%
云母粉      4-6%
聚酰胺树脂固化剂  5-10%
 油酸钠    3-5%
锌粉   3-5%
去离子水    余量。
 该涂料的制备方法，其特征在于包括如下步骤：
⑴ 将油酸钠加入到一定量的去离子水中，混合均匀；
⑵ 再缓慢滴入环氧树脂进行乳化，乳化30-60 min；
⑶ 把适量云母粉投放到乳液中；
⑷ 往乳液中依次加入锌粉、三聚合磷酸铝、聚酰胺树脂固化剂；
⑸ 将混合物置于分散机中在分散搅拌处理，分散搅拌后即得一种水性耐腐涂料。
优先的，加入的锌粉为1500目以上。
优先的，分散机的速度设置为1000-2000r/min，时间为1-2h。
本发明具有下列优点和特性：
⑴水作为分散介质，无有机溶剂或挥发性有机化合物含量低，不污染环境；
⑵施工方便，操作安全；
⑶对绝大多数基材具有良好的附着力；
⑷可以拼合其他水溶涂料树脂，改善性能。
具体实施方式
实施例一：
取一容器装入0.26kg去离子水，在将0.05kg油酸钠加入到去离子水中，搅拌混合均匀后，再缓慢滴入0.4kg环氧树脂进行乳化，乳化30 min后，加入0.04kg云母粉到乳液中，再往混合物中加入0.05kg 锌粉、0.1kg三聚合磷酸铝和 0.1kg聚酰胺树脂固化剂，并置于分散机中在分散搅拌处理，分散机的速度设置为1000r/min，时间为1h，即制备一种耐腐蚀性涂料。
实施例二：
取一容器装入0.17kg去离子水，在将0.04kg油酸钠加入到去离子水中，搅拌混合均匀后，再缓慢滴入0.6kg环氧树脂进行乳化，乳化45 min后，加入0.06kg云母粉到乳液中，再往混合物中加入0.03kg 锌粉、 0.05kg三聚合磷酸铝和 0.05kg聚酰胺树脂固化剂，并置于分散机中在分散搅拌处理，分散机的速度设置为1500r/min，时间为1.5h，即制备一种耐腐蚀性涂料。
实施例三：
取一容器装入0.24kg去离子水，在将0.03kg油酸钠加入到去离子水中，搅拌混合均匀后，再缓慢滴入0.5kg环氧树脂进行乳化，乳化60 min后，加入0.05kg云母粉到乳液中，再往混合物中加入0.04kg 锌粉、 0.06kg三聚合磷酸铝和 0.08kg聚酰胺树脂固化剂，并置于分散机中在分散搅拌处理，分散机的速度设置为2000r/min，时间为2h，即制备一种耐腐蚀性涂料。

Claims (3)

1.一种水性耐腐涂料及其制备方法，其特征在于，该制备方法包括如下步骤：
⑴ 将油酸钠加入到一定量的去离子水中，混合均匀；
⑵ 再缓慢滴入环氧树脂进行乳化，乳化30-60 min；
⑶ 把适量云母粉投放到乳液中；
⑷ 往乳液中依次加入锌粉、三聚合磷酸铝、聚酰胺树脂固化剂；
⑸ 将混合物置于分散机中在分散搅拌处理，分散搅拌后即得一种水性耐腐涂料。
2.根据权利要求1所述的一种水性耐腐涂料及其制备方法，其特征在于，在步骤⑷中，加入的锌粉为1500目以上。
3.根据权利要求1所述的一种水性耐腐涂料及其制备方法，其特征在于，在步骤⑸中，分散机的速度设置为1000-2000r/min，时间为1-2h。
CN201410824530.8A 2014-12-26 2014-12-26 一种水性耐腐涂料及其制备方法 Pending CN104530906A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101104771A (zh) * 2007-08-20 2008-01-16 维新环保涂料（深圳）有限公司 水性环氧富锌底漆
CN103387786A (zh) * 2012-05-11 2013-11-13 天津滨海蓝盾涂料科技有限公司 一种高性能水性环保涂料的制备方法
CN103409040A (zh) * 2013-08-14 2013-11-27 张家港保税区金企鹅贸易有限公司 一种水性环氧富锌底漆

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101104771A (zh) * 2007-08-20 2008-01-16 维新环保涂料（深圳）有限公司 水性环氧富锌底漆
CN103387786A (zh) * 2012-05-11 2013-11-13 天津滨海蓝盾涂料科技有限公司 一种高性能水性环保涂料的制备方法
CN103409040A (zh) * 2013-08-14 2013-11-27 张家港保税区金企鹅贸易有限公司 一种水性环氧富锌底漆

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈永福等: "水性环氧富锌防腐涂料的研制", 《表面技术》 *

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