CN104327650A - 甲基硅酸盐水性纳米防锈剂的制备方法 - Google Patents
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Abstract
本发明设计一种防锈剂的制备方法，具体为甲基硅酸盐水性纳米防锈剂的制备方法，由纳米甲基硅酸盐、731A分散剂制得纳米甲基硅酸盐均质液；纳米甲基硅酸盐均质液、丙烯酸树脂、DPnB、邻苯二甲酸二丁酯、增稠剂、硅溶胶、丙二醇、水500进行混合分散得甲基硅酸盐水性纳米防锈剂。本发明提供的甲基硅酸盐水性纳米防锈剂，原料利用甲基硅酸盐是有机硅生产中副产品甲基三氯硅烷水解产物倍半硅氧烷制得的无机/有机复合材料，廉价易得，无毒无污染，具有亲水、疏水性能和较强的耐酸、耐碱性，是一种优异的水基防锈添加剂。
Description
技术领域
本发明设计一种防锈剂的制备方法，具体为甲基硅酸盐水性纳米防锈剂的制备方法。
技术背景
金属的锈蚀是生产中经常遇到的问题，全世界每年因生锈而报废的钢铁达几千万吨，造成了严重的经济损失。目前，钢铁制品长时间的封存防锈多采用防锈油，但后续工序需进行除油处理，油质不易分解，去除有些困难，且存在废液排放带来的环境污染问题。随着石油资源的日益紧张和环保保护意识的不断增强，使得水基防锈剂的研究受到国内外的广泛关注。
目前，水基防锈剂多采用亚硝酸盐和铬酸盐的钝化技术，添加了亚硝酸盐和铬酸盐的产品具有价廉、效果良好及使用方便等明显优点，研究表明，此类产品的主体原料是一种间接的致癌物质，有剧毒，严重污染环境，它的使用和排放都受到严格限制，因而，不含亚硝酸盐的水基防锈剂的研究意义重大。近年来，乙醇胺与酸的复配防锈剂、多元醇酯防锈剂和以有机物为主体的金属表面自组装防锈剂等有些研究，但多数只能用于工序间防锈，能代替防锈油作为远期封存防锈的水基防锈剂在生产中广泛应用的几乎没有。
发明内容
针对上述技术问题，本发明提供一种无毒的水基防锈剂，具体的技术方案为：
甲基硅酸盐水性纳米防锈剂的制备方法，包括以下步骤：
(1)纳米甲基硅酸锌均质液的制备：
以下原料按照重量份数混合，纳米甲基硅酸盐90-110份、水500-700份、731A分散剂18-20份；混合后的原料通过均质机以50兆帕的压力和每小时500升的流速进行高压分散处理，制得纳米甲基硅酸盐均质液；
(2)水性纳米防锈剂的制备：
以下原料按照重量份数配制：纳米甲基硅酸盐均质液80-100份、丙烯酸树脂300-350份、DPnB25-30份、邻苯二甲酸二丁酯15-20份、增稠剂0.2-0.5份、硅溶胶10-15份、丙二醇10-20份、水500份进行混合，由乳化剪切机以600-800转/min转速乳化分散30分钟；既得甲基硅酸盐水性纳米防锈剂。
所述的纳米甲基硅酸盐为纳米甲基硅酸锌或纳米甲基硅酸铝。
所述的731A分散剂为聚丙烯酸钠盐水性颜料分散剂。
所述的DPnB为二丙二醇正丁醚。
将金属制品，可直接采取喷或浸的方式进行防锈操作。由于甲基硅酸盐中锌或铝可与涂料中丙烯酸乳液的羧基以配位形式结合，在涂层中指向金属端。防锈层固化后，甲基朝外分布在涂层表面，对水或潮湿空气起到排斥作用，提高了涂层的耐蚀性和耐候性。又由于甲基硅酸盐的高度分散性和较低的堆比重，可与丙烯酸乳液等制成非常稳定的水性防锈剂。
本发明提供的甲基硅酸盐水性纳米防锈剂，原料利用甲基硅酸盐是有机硅生产中副产品甲基三氯硅烷水解产物倍半硅氧烷制得的无机/有机复合材料，廉价易得，无毒无污染，具有亲水、疏水性能和较强的耐酸、耐碱性，是一种优异的水基防锈添加剂。
具体实施方式
结合实施例说明本发明的具体实施方式：
实施例1
甲基硅酸盐水性纳米防锈剂的制备方法，包括以下步骤：
(1)纳米甲基硅酸锌均质液的制备：
以下原料按照重量份数混合，纳米甲基硅酸铝110份、水600份、731A分散剂20份；混合后的原料通过均质机以50兆帕的压力和每小时500升的流速进行高压分散处理，制得纳米甲基硅酸盐均质液；
(2)水性纳米防锈剂的制备：
以下原料按照重量份数配制：纳米甲基硅酸盐均质液100份、丙烯酸树脂300份、DPnB28份、邻苯二甲酸二丁酯17份、增稠剂0.2份、硅溶胶15份、丙二醇15份、水500份进行混合，由乳化剪切机以600-800转/min转速乳化分散30分钟；既得甲基硅酸盐水性纳米防锈剂。
实施例2
甲基硅酸盐水性纳米防锈剂的制备方法，包括以下步骤：
(1)纳米甲基硅酸锌均质液的制备：
以下原料按照重量份数混合，纳米甲基硅酸锌90份、水500份、731A分散剂18份；混合后的原料通过均质机以50兆帕的压力和每小时500升的流速进行高压分散处理，制得纳米甲基硅酸盐均质液；
(2)水性纳米防锈剂的制备：
以下原料按照重量份数配制：纳米甲基硅酸盐均质液80份、丙烯酸树脂320份、DPnB30份、邻苯二甲酸二丁酯15份、增稠剂0.5份、硅溶胶10份、丙二醇10、水500份进行混合，由乳化剪切机以600-800转/min转速乳化分散30分钟；既得甲基硅酸盐水性纳米防锈剂。
实施例3
甲基硅酸盐水性纳米防锈剂的制备方法，包括以下步骤：
(1)纳米甲基硅酸锌均质液的制备：
以下原料按照重量份数混合，纳米甲基硅酸铝100份、水700份、731A分散剂19份；混合后的原料通过均质机以50兆帕的压力和每小时500升的流速进行高压分散处理，制得纳米甲基硅酸盐均质液；
(2)水性纳米防锈剂的制备：
以下原料按照重量份数配制：纳米甲基硅酸盐均质液90份、丙烯酸树脂350份、DPnB25份、邻苯二甲酸二丁酯20份、增稠剂0.3份、硅溶胶12份、丙二醇20份、水500份进行混合，由乳化剪切机以600-800转/min转速乳化分散30分钟；既得甲基硅酸盐水性纳米防锈剂。
上述实施例制得的甲基硅酸盐水性纳米防锈剂，喷涂在将金属制品上进行防锈操作。形成的防锈膜是非常致密的纳米级非晶态球形颗粒堆积而成硬质薄膜，膜平均厚度为100nm。
Claims (2)
1.甲基硅酸盐水性纳米防锈剂的制备方法，其特征在于，包括以下步骤：
(1)纳米甲基硅酸锌均质液的制备：
以下原料按照重量份数混合，纳米甲基硅酸盐90-110份、水500-700份、731A分散剂18-20份；混合后的原料通过均质机以50兆帕的压力和每小时500升的流速进行高压分散处理，制得纳米甲基硅酸盐均质液；
(2)水性纳米防锈剂的制备：
以下原料按照重量份数配制：纳米甲基硅酸盐均质液80-100份、丙烯酸树脂300-350份、DPnB25-30份、邻苯二甲酸二丁酯15-20份、增稠剂0.2-0.5份、硅溶胶10-15份、丙二醇10-20份、水500份进行混合，由乳化剪切机以600-800转/min转速乳化分散30分钟；既得甲基硅酸盐水性纳米防锈剂。
2.根据权利要求1所述的甲基硅酸盐水性纳米防锈剂的制备方法，其特征在于，所述的纳米甲基硅酸盐为纳米甲基硅酸锌或纳米甲基硅酸铝。
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