CN104877499A - 一种耐高温富锌油漆及其制备方法 - Google Patents

一种耐高温富锌油漆及其制备方法 Download PDF

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CN104877499A
CN104877499A CN201510265707.XA CN201510265707A CN104877499A CN 104877499 A CN104877499 A CN 104877499A CN 201510265707 A CN201510265707 A CN 201510265707A CN 104877499 A CN104877499 A CN 104877499A
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曾文江
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Abstract

本发明涉及一种耐高温富锌油漆及其制备方法,利用硅酸锂溶液无毒、耐高温、成膜好的特性,和锌粉的原电池保护原理,将其混合并加入一定的溶剂和助剂制备出一种高耐高温富锌油漆。

Description

一种耐高温富锌油漆及其制备方法
技术领域
本发明涉及一种油漆涂料,特别涉及一种防止金属腐蚀的富锌油漆及其制备方法,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。
本发明通过研制一种高温富锌油漆,涂覆在钢铁表面,从而大大延长钢结构的使用寿命。该油漆采用硅酸锂为基料,通过硅酸锂与锌粉在一定条件下反应交联成膜,硅酸锂水溶液为无色透明或呈微乳白色的液体,无毒、不燃。硅酸锂水溶液有和具有亲水表面的玻璃、钢铁、铝及纤维等的表面反应成膜的特性,60℃以上即可进行,温度愈高,反应愈快。作为涂料基料,可用水作溶剂,形成的涂膜,具有耐热、耐辐射、无毒等性能。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。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。该油漆性能稳定,在高温使用不脱膜,具有良好的耐高温性能。
发明内容
本发明的目的是提供一种耐高温富锌油漆及其制备方法,为实现这一目的,该油漆包括以下质量份数的原料:
硅酸锂    5%-10%;
硅溶胶     20%-50%;
 硅烷偶联剂     5%-10% ;
硅丙乳液     20%-30%;
超细锌粉     20%-30% ;
一种耐高温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倒入容器中加热,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10-15分钟即可得一种耐高温富锌油漆。
本发明具有下列优点和特性:
⑴  该有油漆高温性能好;
⑵ 机械性能好、施工方便;
⑶ 节能、环保。
具体实施方式
实施例一:
取50g硅酸锂溶液倒入容器中加热,温度控制在50℃,并不停的搅拌,再缓慢滴加300g硅溶胶,使其充分混合均匀,然后再往容器中加入50g的硅烷偶联剂,高速搅拌,搅拌均匀后,停止加热,待温度降至室温时,加入300g硅丙乳液,最后添加300g锌粉,持续搅拌10-15分钟即可得一种耐高温富锌油漆。
实施例二:
取80g硅酸锂溶液倒入容器中加热,温度控制在60℃,并不停的搅拌,再缓慢滴加350g硅溶胶,使其充分混合均匀,然后再往容器中加入70g的硅烷偶联剂,高速搅拌,搅拌均匀后,停止加热,待温度降至室温时,加入300g硅丙乳液,最后添加200g锌粉,持续搅拌10-15分钟即可得一种耐高温富锌油漆。
实施例三:
取100g硅酸锂溶液倒入容器中加热,温度控制在70℃,并不停的搅拌,再缓慢滴加800g硅溶胶,使其充分混合均匀,然后再往容器中加入200g的硅烷偶联剂,高速搅拌,搅拌均匀后,停止加热,待温度降至室温时,加入500g硅丙乳液,最后添加400g锌粉,持续搅拌10-15分钟即可得一种耐高温富锌油漆。

Claims (2)

1.一种耐高温富锌油漆的制备方法,其特征在于该方法包括以下步骤:
⑴ 将一定量的硅酸锂溶液倒入容器中加热,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;
⑷   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10-15分钟即可得一种耐高温富锌油漆。
2.根据权利要求1所述的一种耐高温富锌油漆的制备方法,其特征在于所述添加的硅酸锂溶液的质量比例为  5%-10%,硅溶胶质量比例为20%-50%, 硅烷偶联剂质量比例为5%-10% ,硅丙乳液质量比例为 20%-30%,超细锌粉质量比例为20%-30%。
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CN105255296A (zh) * 2015-11-21 2016-01-20 黎裕发 一种新型耐油性贮罐导静电防腐蚀涂料
CN105255295A (zh) * 2015-11-21 2016-01-20 黎裕发 一种贮罐导静电防腐蚀涂料
CN105255271A (zh) * 2015-11-21 2016-01-20 黎裕发 一种金属添加型贮罐导静电防腐涂料
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CN105295620A (zh) * 2015-11-21 2016-02-03 黎裕发 一种高性能的贮罐导静电防腐蚀涂料及其制备工艺
CN105419539A (zh) * 2015-12-27 2016-03-23 黄子芳 一种添加羧甲基纤维素增稠剂的功能涂料及工艺
CN106010040A (zh) * 2016-07-31 2016-10-12 林家天 一种添加改性剂的耐高温防腐功能涂料
CN106010038A (zh) * 2016-07-24 2016-10-12 黄子芳 一种新型功能涂料及其制备工艺
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
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CN106221317A (zh) * 2016-07-31 2016-12-14 林家天 一种耐高温防腐涂料的改性方法
CN106243876A (zh) * 2016-07-31 2016-12-21 林家天 一种添加醚类改性剂的耐高温防腐功能涂料

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Cited By (14)

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CN105255295A (zh) * 2015-11-21 2016-01-20 黎裕发 一种贮罐导静电防腐蚀涂料
CN105255271A (zh) * 2015-11-21 2016-01-20 黎裕发 一种金属添加型贮罐导静电防腐涂料
CN105272130A (zh) * 2015-11-21 2016-01-27 黎裕发 一种添加异丁基三甲氧基硅烷的贮罐导静电防腐涂料
CN105295620A (zh) * 2015-11-21 2016-02-03 黎裕发 一种高性能的贮罐导静电防腐蚀涂料及其制备工艺
CN105255296A (zh) * 2015-11-21 2016-01-20 黎裕发 一种新型耐油性贮罐导静电防腐蚀涂料
CN105419539A (zh) * 2015-12-27 2016-03-23 黄子芳 一种添加羧甲基纤维素增稠剂的功能涂料及工艺
CN106147481A (zh) * 2016-07-24 2016-11-23 黄子芳 一种功能涂料的制备方法
CN106010038A (zh) * 2016-07-24 2016-10-12 黄子芳 一种新型功能涂料及其制备工艺
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
CN106010040A (zh) * 2016-07-31 2016-10-12 林家天 一种添加改性剂的耐高温防腐功能涂料
CN106118312A (zh) * 2016-07-31 2016-11-16 林家天 一种耐高温防腐功能涂料
CN106189626A (zh) * 2016-07-31 2016-12-07 林家天 一种添加复合改性剂的耐高温防腐涂料
CN106221317A (zh) * 2016-07-31 2016-12-14 林家天 一种耐高温防腐涂料的改性方法
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Application publication date: 20150902