CN110467861A - 一种冷涂锌涂料及其制备方法 - Google Patents
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Abstract
本发明先公开了一种冷涂锌涂料，其组成成份以质量份数表示法为：由5‑10份改性树脂、93‑98份高纯度锌粉、1‑3份纳米碳化硅、0.5‑1.0份防沉剂和5‑10份有机溶剂组成，还公开了一种冷涂锌涂料的制备方法。本发明所得冷涂锌涂料，粘结力更强，受外界温度、湿度的影响较小，耐候性更好。该涂料对于钢铁底材不需要酸洗、水洗，可以大大降低能耗，又可以大大减少废水废酸的处理和排放，有利于环保，是代替热浸镀锌工艺的非常理想的产品。
Description
技术领域
本发明属于防腐涂料领域，具体涉及一种冷涂锌涂料及其制备方法。
背景技术
由于钢结构经常受到大气、化学物质等外界因素腐蚀,一般在运行几年后便出现腐蚀现象,严重影响了铁质材料的寿命。为了延长设备的使用寿命,保证设备的安全运行,需及时对铁质材料进行防腐措施,并对防腐涂料提出高效耐久,甚至要求半永久性的保护,以延长设备使用寿命。
目前全世界约超过一半以上的钢材是通过锌的防护来实现防腐的。锌仍然是最简单、有效的防腐材料。一般采用热喷锌或镀锌等方法刷涂，部分采用防腐涂料涂刷，其存在的问题是：防腐基体处理要求高，涂膜过厚易开裂，漆膜固化时受温度、湿度影响较大，固化时间长，且大都存在耐候性差，粘结力不强的缺点，因此防腐性能普遍不理想。此外，还需要对于钢铁底材进行酸洗、水洗，废水废酸的处理和排放，不利于环保，耗能大使用成本高。
发明内容
为解决上述技术问题，本发明提供了一种冷涂锌涂料及其制备方法。
为实现上述目的，本发明是通过以下技术方案来实现的：一种冷涂锌涂料，其特征在于，其组成成份以质量份数表示法为：由5-10份改性树脂、93-98份高纯度锌粉、1-3份纳米碳化硅、0.5-1.0份防沉剂和5-10份有机溶剂组成。
作为优选的方案，上述的改性树脂由以下质量份数的原料组成：5-15份异丁烯三乙氧基硅烷，5-10份丙烯酸丁脂，8-15份苯乙烯，5-15份甲基丙烯酸甲酯，30-55份二甲苯，0.3-1.0份过氧化苯甲酰。
作为优选的方案，上述的防沉剂为MONORAL 3300。
作为优选的方案，上述的有机溶剂为二甲苯。
本发明还提供了上述的改性树脂的制备方法，包括以下步骤：将5-15份的异丁烯三乙氧基硅烷、5-10份的丙烯酸丁酯、8-15份的苯乙烯、5-15份的甲基丙烯酸甲酯和30-55份二甲苯投入釜中，釜内通氮气，加热升温至80-90℃，边搅拌， 边滴加0.3-1.0份过氧化苯甲酰，滴加完后保持恒温3.5小时，然后降温，过滤备用。
本发明还提供了一种冷涂锌涂料的制备方法，将5-10份改性树脂加入釜内，搅拌下加入93-98份的高纯度锌粉和1-3份纳米碳化硅，搅拌均匀后，加入0.5-1.0份防沉剂、5-10份二甲苯，高速分散均匀，过滤包装，制成冷涂锌涂料。
本发明的有益效果：从改性树脂的制备开始，制得了含锌量高的冷镀锌涂层，提高了重防腐涂料的防腐性能，涂料的粘结力更强，受外界温度、湿度的影响较小，耐候性更好。该涂料对于钢铁底材不需要酸洗、水洗，可以大大降低能耗，又可以大大减少废水废酸的处理和排放，有利于环保，是代替热浸镀锌工艺的非常理想的产品。
具体实施方式
为了更好地理解本发明，下面结合实施例进一步阐明本发明的内容，但本发明的内容不仅仅局限于下面的实施例。
实施例1
一种改性树脂，其制备方法包括如下步骤：将10份的异丁烯三乙氧基硅烷，8份的丙烯酸丁酯、10份的苯乙烯、10份的甲基丙烯酸甲酯投入釜中，釜内通氮气，加热升温，边搅拌，边滴加0.5份过氧化苯甲酰，滴加完后保持恒温3.5小时，然后降温，加入8份二甲苯，过滤包装。
一种冷涂锌涂料，其制备方法包括如下步骤：将上述的改性树脂8份加入釜内，搅拌下加入96份的高纯度锌粉、纳米碳化硅1份、搅拌均匀后，加入MONORAL 3300 1.0份、二甲苯8份，高速分散均匀，过滤包装。
实施例2
一种改性树脂，其制备方法包括如下步骤：将5份的异丁烯三乙氧基硅烷，10份的丙烯酸丁酯、8份的苯乙烯、15份的甲基丙烯酸甲酯投入釜中，釜内通氮气，加热升温，边搅拌，边滴加1份过氧化苯甲酰，滴加完后保持恒温3.5小时，然后降温，加入30份二甲苯，过滤包装。
一种冷涂锌涂料，其制备方法包括如下步骤：将上述的改性树脂5份加入釜内，搅拌下加入98份的高纯度锌粉、纳米碳化硅2份、搅拌均匀后，加入MONORAL 3300 0.5份、二甲苯5份，高速分散均匀，过滤包装。
实施例3
一种改性树脂，其制备方法包括如下步骤：将15份的异丁烯三乙氧基硅烷，5份的丙烯酸丁酯、15份的苯乙烯、5份的甲基丙烯酸甲酯投入釜中，釜内通氮气，加热升温，边搅拌，边滴加0.3份过氧化苯甲酰，滴加完后保持恒温3.5小时，然后降温，加入55份二甲苯，过滤包装。
一种冷涂锌涂料，其制备方法包括如下步骤：将上述的改性树脂10份加入釜内，搅拌下加入93份的高纯度锌粉、纳米碳化硅3份、搅拌均匀后，加入MONORAL 3300 0.5份、二甲苯10份，高速分散均匀，过滤包装。
应用本发明的实施例1-3制备的冷涂锌涂料，测试性能结果如下：
| 实施例 | 柔韧性（mm） | 附着力（MPa） | 抗冲击强度（Kg.cm） | 耐盐雾性（5000h） |
| 1 | 2 | 5 | 50 | 划线处无红锈，单项扩蚀≤2.0mm；未划线区无开裂、剥落、生锈现象 |
| 2 | 2 | 5.9 | 50 | 划线处无红锈，单项扩蚀≤2.0mm；未划线区无开裂、剥落、生锈现象 |
| 3 | 2 | 5.5 | 50 | 划线处无红锈，单项扩蚀≤2.0mm；未划线区无开裂、剥落、生锈现象 |
由上述的测试结果，可以看出，应用本发明制得的冷涂锌涂料的柔韧性、附着力和抗冲击强度都很好，得到的涂料的耐盐雾性更好。除此，对基体表面的预处理要求不是很高，因此施工工艺简单，不需要酸洗，没有废水、废酸产生，节能环保，是今后取代热镀锌的非常理想的产品。
以上仅以较佳实施例公开了本发明，然其并非用以限制本发明，凡采用等同替换或者等效变换方式所获得的技术方案，均落在本发明的保护范围之内。
Claims (6)
1.一种冷涂锌涂料，其特征在于，其组成成份以质量份数表示法为：由5-10份改性树脂、93-98份高纯度锌粉、1-3份纳米碳化硅、0.5-1.0份防沉剂和5-10份有机溶剂组成。
2.根据权利要求1所述的一种冷涂锌涂料，其特征在于，所述的改性树脂由以下质量份数的原料组成：5-15份异丁烯三乙氧基硅烷，5-10份丙烯酸丁脂，8-15份苯乙烯，5-15份甲基丙烯酸甲酯，30-55份二甲苯，0.3-1.0份过氧化苯甲酰。
3.根据权利要求2所述的一种冷涂锌涂料，其特征在于，所述的防沉剂为MONORAL3300。
4.根据权利要求3所述的一种冷涂锌涂料，其特征在于，所述的有机溶剂为二甲苯。
5.根据权利要求2-4任一项所述的一种冷涂锌涂料的制备方法，其特征在于，所述的改性树脂包括以下制备步骤：将5-15份的异丁烯三乙氧基硅烷、5-10份的丙烯酸丁酯、8-15份的苯乙烯、5-15份的甲基丙烯酸甲酯和30-55份二甲苯投入釜中，釜内通氮气，加热升温至80-90℃，边搅拌， 边滴加0.3-1.0份过氧化苯甲酰，滴加完后保持恒温3.5小时，然后降温，过滤备用。
6.根据权利要求5所述的一种冷涂锌涂料的制备方法，其特征在于，将5-10份改性树脂加入釜内，搅拌下加入93-98份的高纯度锌粉和1-3份纳米碳化硅，搅拌均匀后，加入0.5-1.0份防沉剂、5-10份二甲苯，高速分散均匀，过滤包装，制成冷涂锌涂料。
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