CN104877500A - 一种硅酸锂-硅酸鈉混合富锌油漆及其工艺 - Google Patents

一种硅酸锂-硅酸鈉混合富锌油漆及其工艺 Download PDF

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CN104877500A
CN104877500A CN201510265751.0A CN201510265751A CN104877500A CN 104877500 A CN104877500 A CN 104877500A CN 201510265751 A CN201510265751 A CN 201510265751A CN 104877500 A CN104877500 A CN 104877500A
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曾文江
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Abstract

本发明涉及一种硅酸锂-硅酸钠混合富锌油漆及其工艺，以硅酸锂和硅酸钠作为复合基料，在一定助剂的条件下，与超细锌粉充分混合，制备的油漆综合性能强，价格低廉。

Description

一种硅酸锂-硅酸鈉混合富锌油漆及其工艺
技术领域
本发明涉及一种油漆，特别涉及一种涂覆金属表面的富锌油漆及其制备工艺，属于油漆化工领域。
背景技术
金属腐蚀是金属寿命缩短的一个重要影响因素，全世界每年因腐蚀造成的经济损失约占各国GDP的2%-4%，因腐蚀而报废的金属达亿吨以上。金属的锈蚀是最常见的腐蚀形态。腐蚀时，在金属的界面上发生了化学或电化学多相反应，使金属转入氧化（离子）状态，这会显著降低金属材料的强度、塑性、韧性等力学性能，破坏金属构件的几何形状，增加零件间的磨损，恶化电学和光学等物理性能，缩短设备的使用寿命，甚至造成火灾、爆炸等灾难性事故。
钢铁作为一种最普通使用的金属材料，也同样面临着腐蚀这一难题目。据统计，每年由于腐蚀而直接损耗的钢铁，约占钢铁年产量的四分之一。人们通过各种方式来延缓钢铁的腐蚀速度，如改进基材、选用防腐蚀材料、增加金属镀层、添加缓蚀剂、采用电化学保护。人们通过向纯金属中添加其他物质来抑制或者阻止金属的腐蚀，取得了不同程度的成功。但向铁中所添加的微量物质可能加快腐蚀的速度，且采用不容易发生腐蚀的材料解决腐蚀问题的缺点在于与原来的金属相比，其物理性能往往会有所缺失，或者由于合金的成本而导致成本增加。因此最常用的防腐方式就是给需要保护的金属外加一个有耐受能力的表面涂层（或者敷层）。此类涂层所使用的材料各不相同，但常用的是油漆涂料。普通防腐蚀涂料一方面含有大量有机溶剂，溶剂型涂料在生产及施工阶段，会有大量的溶剂释放到空气中，不仅危害施工人员的身体健康，而且造成环境污染。另一方面，普通油漆只是简单覆盖隔绝空气，防腐作用不强。
富锌油漆是一种常见防止金属腐蚀的涂料。涂覆在钢铁表面，从而大大延长钢结构的使用寿命。由于锌的标准电位较钢铁低，腐蚀介质渗入时，钢铁与锌粉形成原电池，锌粉作为原电池的负极失去电子，钢铁作为正极得到电子而获得保护。当富锌涂料的涂膜上有的部位被机械损伤后，在一定范围的面积内,防蚀电流也能流向钢铁露出部分，则锌的腐蚀产物就沉积在那里形成一层保护膜。随着钢铁表面的不断暴露，富锌涂膜不断地被保护膜所遮盖，阴极保护作用便又呈现惰性，但在涂膜受到机械损伤而露出新的锌表面时则又开始复活。若用砂纸打磨涂膜表面，或将涂膜擦伤露出新的锌面，则电位差便恢复原状。另外，溶解出来的锌离子与腐蚀介质中的阴离子结合而形成碱式锌盐和锌铁复盐，填满涂膜的裂缝，而达到隔离防腐蚀的目的。富锌油漆分为有机富锌油漆和无机富锌油漆，有机富锌涂料常用环氧树脂、氯化橡胶、乙烯基树脂和聚氨酯树脂为成膜基料。但有机富锌油漆的有机成膜物的导电性能差。无机富锌油漆又分为有溶剂型和水性两类。其中水性无机富锌油漆是由水性无机硅酸盐（纳、钾、锂）树脂、锌粉、助剂等组成。单独使用硅酸锂作为基料，其热应变性差且价格高，而硅酸钠基料成膜性好，价格低。 本发明通过研制一种硅酸锂-硅酸钠混合富锌油漆，其综合性能将大大提高。
发明内容
本发明的目的是提供一种硅酸锂-硅酸钠混合富锌油漆及其工艺，为实现这一目的，该油漆包括以下质量百分比的原料：
硅酸锂    5%-10%；
硅酸钠  5%-10%；
硅溶胶     20%-40%；
 硅烷偶联剂     5%-10% ；
硅丙乳液     20%-30%；
超细锌粉     20%-30% 。
一种硅酸锂-硅酸钠混合富锌油漆的制备方法包括如下步骤：
⑴   将一定量的硅酸锂溶液和硅酸钠溶液倒入容器中混合加热，温度控制在50-70℃；
⑵   在不停的搅拌下，缓慢滴加计量的硅溶胶，使其充分混合；
⑶   再往容器中加入一定计量的硅烷偶联剂，高速搅拌；
⑷   停止加热，当温度降至室温时，加入硅丙乳液；
⑸   最后添加适量的超细锌粉，持续搅拌一段即可得一种硅酸锂-硅酸钠混合富锌油漆。
本发明具有下列优点和特性：
⑴  该油漆制备工艺简单，操作性好；
⑵    制备的油漆综合性能好；
⑶    价格低廉，且环保。
具体实施方式
实施例一：
将50g硅酸锂溶液和50g硅酸钠溶液分别倒入一容器中混合，并将其混合物加热，加热温度控制在60℃左右，用搅拌机不停的搅拌。在搅拌过程中，再缓慢滴加300g硅溶胶，滴加完毕后，再往容器中加入50g的硅烷偶联剂，并将提高搅拌速度，5分钟后停止加热，待温度降至室温时，再加入250g硅丙乳液，最后添加300g超细锌粉，持续搅拌10-15分钟即可得一种硅酸锂-硅酸钠混合富锌油漆。
实施例二：
将70g硅酸锂溶液和70g硅酸钠溶液分别倒入一容器中混合，并将其混合物加热，加热温度控制在60℃左右，用搅拌机不停的搅拌。在搅拌过程中，再缓慢滴加300g硅溶胶，滴加完毕后，再往容器中加入60g的硅烷偶联剂，并将提高搅拌速度，5分钟后停止加热，待温度降至室温时，再加入300g硅丙乳液，最后添加200g超细锌粉，持续搅拌10-15分钟即可得一种硅酸锂-硅酸钠混合富锌油漆。
实施例三：
将100g硅酸锂溶液和100g硅酸钠溶液分别倒入一容器中混合，并将其混合物加热，加热温度控制在60℃左右，用搅拌机不停的搅拌。在搅拌过程中，再缓慢滴加200g硅溶胶，滴加完毕后，再往容器中加入100g的硅烷偶联剂，并将提高搅拌速度，5分钟后停止加热，待温度降至室温时，再加入200g硅丙乳液，最后添加300g超细锌粉，持续搅拌10-15分钟即可得一种硅酸锂-硅酸钠混合富锌油漆。

Claims (2)

1.一种硅酸锂-硅酸钠混合富锌油漆，其特征在于该油漆的制备方法包括以下步骤：
⑴   将一定量的硅酸锂溶液和硅酸钠溶液倒入容器中混合加热，温度控制在50-70℃；
⑵   在不停的搅拌下，缓慢滴加计量的硅溶胶，使其充分混合；
⑶   再往容器中加入一定计量的硅烷偶联剂，高速搅拌；
⑷   停止加热，当温度降至室温时，加入硅丙乳液；
⑸   最后添加适量的超细锌粉，持续搅拌一段即可得一种硅酸锂-硅酸钠混合富锌油漆。
2.根据权利要求1所述的一种硅酸锂-硅酸钠混合富锌油漆，其特征在于该硅酸锂-硅酸钠混合富锌油漆组分含量的质量百分比为：硅酸锂5%-10%，硅酸钠5%-10%，硅溶胶20%-40%，硅烷偶联剂5%-10% ，硅丙乳液20%-30%，超细锌粉20%-30% 。
CN201510265751.0A 2015-05-24 2015-05-24 一种硅酸锂-硅酸鈉混合富锌油漆及其工艺 Pending CN104877500A (zh)

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CN105385276A (zh) * 2015-12-14 2016-03-09 李盈富 一种稳定性无机储罐防腐漆及其制备工艺
CN105400348A (zh) * 2015-12-13 2016-03-16 李盈富 一种添加硫硅烷的无机储罐改性防腐漆
CN105419537A (zh) * 2015-12-27 2016-03-23 黄子芳 一种添加水溶性碳酸钾增稠剂的功能涂料
CN105504903A (zh) * 2015-12-31 2016-04-20 肖昌义 无机涂料及其制备方法
CN105542598A (zh) * 2015-12-27 2016-05-04 黄子芳 一种添加蒙脱石增稠剂的功能涂料
CN106010037A (zh) * 2016-07-24 2016-10-12 黄子芳 一种添加醚类改性剂的功能涂料
CN106047005A (zh) * 2016-07-24 2016-10-26 黄子芳 一种添加烷基类改性剂的功能涂料
CN106118310A (zh) * 2016-07-24 2016-11-16 黄子芳 一种双重改性功能涂料
CN106634150A (zh) * 2016-11-20 2017-05-10 陈基平 一种添加复合改性剂的涂料的制备方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
高瀚文等: "水性无机富锌涂料的研制", 《上海涂料》 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105400348A (zh) * 2015-12-13 2016-03-16 李盈富 一种添加硫硅烷的无机储罐改性防腐漆
CN105385276A (zh) * 2015-12-14 2016-03-09 李盈富 一种稳定性无机储罐防腐漆及其制备工艺
CN105419537A (zh) * 2015-12-27 2016-03-23 黄子芳 一种添加水溶性碳酸钾增稠剂的功能涂料
CN105542598A (zh) * 2015-12-27 2016-05-04 黄子芳 一种添加蒙脱石增稠剂的功能涂料
CN105504903A (zh) * 2015-12-31 2016-04-20 肖昌义 无机涂料及其制备方法
CN106010037A (zh) * 2016-07-24 2016-10-12 黄子芳 一种添加醚类改性剂的功能涂料
CN106047005A (zh) * 2016-07-24 2016-10-26 黄子芳 一种添加烷基类改性剂的功能涂料
CN106118310A (zh) * 2016-07-24 2016-11-16 黄子芳 一种双重改性功能涂料
CN106634150A (zh) * 2016-11-20 2017-05-10 陈基平 一种添加复合改性剂的涂料的制备方法

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Application publication date: 20150902