CN106349926A - 一种水性纳米陶瓷复合涂料及其涂装方法 - Google Patents
一种水性纳米陶瓷复合涂料及其涂装方法 Download PDFInfo
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Abstract
一种水性纳米陶瓷复合涂料的制备方法，以质量分数计，将水性丙烯酸聚合物5％‑15％、硅溶胶溶液5％‑20％、硅氧烷23—40％、醇类2％‑15％、10％‑15％的去离子水、以及微量的金属氧化物，经过反应器常温常压搅拌20‑60分钟，产生反应，形成复合树酯，再加入10％‑40％的颜料以及0.1％—5％的弱酸，常温常压搅拌5‑60分钟熟化，即可完成涂料的制备。
Description
技术领域
本发明涉及涂料技术领域，特别是一种在塑料基材上应用的水性纳米陶瓷复合涂料及其涂装方法。
背景技术
手机机壳、家电外壳等塑料配件都需要表面涂层，传统涂层多为油性材料，环保和耐久性有很大问题。水性漆是未来发展趋势，但普通水性漆往往耐水性差且硬度与光泽度受限。而普通的陶瓷涂料，一方面可能引入苯、醛等有毒溶剂，另一方面多需要高温烤制，容易引起塑料基材变形，影响使用和推广。
发明内容
为了克服现有技术的上述缺陷，本发明提供了一种水性纳米陶瓷复合涂料及其涂装方法，该涂料本身水性环保，涂层有较高硬度，耐划刮和化学腐蚀，同时有较低的固化温度，方便使用。
本发明的一种水性纳米陶瓷复合涂料及其涂装方法采用以下技术方案：
一种水性纳米陶瓷复合涂料的制备方法，以质量分数计，将水性丙烯酸聚合物5％-15％、硅溶胶溶液5％-20％、硅氧烷23—40％、醇类2％-15％、10％-15％的去离子水，以及微量的金属氧化物，经过反应器常温常压搅拌20-60分钟，产生反应，形成复合树酯，再加入10％-40％的颜料以及0.1％—5％的弱酸，常温常压搅拌5-60分钟熟化，即可完成涂料的制备。
进一步地，涂料喷涂至塑料基材表面后，在50-120℃下烘烤10-40分钟固化，或常温固化18-30小时。
进一步地，所述硅氧烷为聚二甲基硅氧烷、羟基聚二甲基硅氧烷或甲基三甲氧基硅烷。
进一步地，所述丙烯酸聚合物为甲基丙烯酸甲酯、甲基丙烯酸正丁酯或甲基丙烯酸叔丁基环己酯。
进一步地，所述醇类为甲醇、乙醇或异丙醇。
进一步地，所述金属氧化物为碱金属氧化物或稀土金属氧化物。
一种水性纳米陶瓷复合涂料，所述涂料按照所述的制备方法制备而成。
一种水性纳米陶瓷复合涂料的涂装方法，先将塑料基材表面打磨，使用400-600砂纸打至表面没有光泽，使用0.8毫米口径的喷枪，在2—3KG压力下喷涂，厚度在10—15微米之间，使用80度烘干30分钟。
本发明的一种水性纳米陶瓷复合涂料，集有机涂料的色彩丰富、附着力强和无机涂料的超硬耐磨、耐腐蚀等优势于一身，可在80度以下甚至常温环境下固化，很好地解决了塑料器件表面涂层的问题。本发明的水性纳米陶瓷复合涂料，涂层表面铅笔硬度可以达到4H,耐划刮和耐酸碱腐蚀均比有机涂料有很大提升，同时具有抗静电、耐指纹、耐紫外线老化等功能。本发明的一种水性纳米陶瓷复合涂料，配方均为水性，无醛苯等有毒物质释放，安全环保，涂层可在低温下固化，便于塑料基材加工。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明的实施例，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的一种水性纳米陶瓷复合涂料，系将水溶性丙烯酸聚合物、硅溶胶溶液与硅氧烷水溶液按照一定比例混合，加入少量和微量的其他材料，经过低温反应，形成复合硅树酯，再加入色料和其他辅助材料而成。通过采用硅溶胶溶液、硅氧烷水溶液与水性丙烯酸聚合物为主要原料，通过对硅类陶瓷涂料的柔性改性，达到合并柔性与硬度的复合陶瓷涂层；同时引入其他水性介质和添加剂，达到绿色环保和低温固化的目的。
本发明的制备方法是：以质量分数计，将水性丙烯酸聚合物5％-15％、硅溶胶溶液5％-20％、硅氧烷23—40％、醇类2％-15％、10％-15％的去离子水，以及微量的金属氧化物，经过反应器常温常压搅拌20-60分钟，产生中和反应，形成复合树酯，再加入10％-40％的颜料以及0.1％—5％的弱酸，常温常压搅拌5-60分钟熟化，即可完成涂料的制备。涂层经适当涂覆后，可在50-120℃下烘烤10-40分钟固化，或常温固化18-30小时。
进一步地，本发明所述硅氧烷可为聚二甲基硅氧烷、羟基聚二甲基硅氧烷、甲基三甲氧基硅烷等；本发明所述丙烯酸聚合物可为甲基丙烯酸甲酯、甲基丙烯酸正丁酯、甲基丙烯酸叔丁基环己酯等；所述醇类可以为甲醇、乙醇、异丙醇等。
本发明所述低温固化条件，为50-120℃烘烤10-40分钟，其中塑料基材综合生产线需求优选为80℃烘烤30分钟；或常温固化18-30小时，优选24小时。
优选地，本发明所述金属氧化物，可为碱金属氧化物或稀土金属氧化物，其中根据实际用途优选氧化铈。
具体实施例1：本发明的一种水性纳米陶瓷复合涂料，以质量分数计，包括12％水性丙烯酸聚合物、18％硅溶胶溶液、30％硅氧烷、5％乙醇、12％去离子水、1％金属氧化物混合常温常压搅拌30分钟，加入15％颜料、2％弱酸常温常压搅拌40分钟，可完成涂料制备。
具体实施例2：本发明的一种水性纳米陶瓷复合涂料，以质量分数计，包括5％水性丙烯酸聚合物、20％硅溶胶溶液、23％硅氧烷、15％甲醇、15％去离子水、1％金属氧化物混合常温常压搅拌30分钟，加入15％颜料、2％弱酸常温常压搅拌40分钟，可完成涂料制备。
具体实施例1：本发明的一种水性纳米陶瓷复合涂料，以质量分数计，包括15％水性丙烯酸聚合物、5％硅溶胶溶液、40％硅氧烷、10％异丙醇、10％去离子水、1％金属氧化物混合常温常压搅拌30分钟，加入15％颜料、2％弱酸常温常压搅拌40分钟，可完成涂料制备。
涂装方法：先将塑料基材表面打磨，使用400-600砂纸打至表面没有光泽，使用0.8毫米口径的喷枪，在2—3KG压力下喷涂，厚度在10—15微米之间，使用80度烘干30分钟，即可达到上述效果。根据设计要求可以适当加厚或二次喷涂。本发明所述产品应用，不局限于塑料基材，可扩展至铝、钢、木等基材。
以上所述，仅为本发明的较佳实例，是说明性的而不是限定性的，可按照所限定的范围列举出若干个实施例，因此在不脱离本发明总体构思下的变化和修改，应属本发明的保护范围之内。
下表1为本发明实施例的水性纳米陶瓷复合涂料性能测试结果：
表1：涂层性能指标
表2：与常规产品比较
尽管参考其示例性的实施方案，已经对本发明进行具体地显示和描述，但是本领域的普通技术人员应该理解，在不背离由权利要求书所定义的本发明的精神和范围的条件下，可以在其中进行各种形式和细节的变化，可以进行各种实施方案的任意组合。
Claims (8)
1.一种水性纳米陶瓷复合涂料的制备方法，其特征在于：以质量分数计，将水性丙烯酸聚合物5％-15％、硅溶胶溶液5％-20％、硅氧烷23—40％、醇类2％-15％、10％-15％的去离子水，以及微量的金属氧化物，经过反应器常温常压搅拌20-60分钟，产生反应，形成复合树酯，再加入10％-40％的颜料以及0.1％—5％的弱酸，常温常压搅拌5-60分钟熟化，即可完成涂料的制备。
2.根据权利要求1所述的一种水性纳米陶瓷复合涂料的制备方法，其特征在于：涂料喷涂至塑料基材表面后，在50-120℃下烘烤10-40分钟固化，或常温固化18-30小时。
3.根据权利要求1所述的一种水性纳米陶瓷复合涂料的制备方法，其特征在于：所述硅氧烷为聚二甲基硅氧烷、羟基聚二甲基硅氧烷或甲基三甲氧基硅烷。
4.根据权利要求1所述的一种水性纳米陶瓷复合涂料的制备方法，其特征在于：所述丙烯酸聚合物为甲基丙烯酸甲酯、甲基丙烯酸正丁酯或甲基丙烯酸叔丁基环己酯。
5.根据权利要求1所述的一种水性纳米陶瓷复合涂料的制备方法，其特征在于：所述醇类为甲醇、乙醇或异丙醇。
6.根据权利要求1所述的一种水性纳米陶瓷复合涂料的制备方法，其特征在于：所述金属氧化物为碱金属氧化物或稀土金属氧化物。
7.一种水性纳米陶瓷复合涂料，其特征在于：所述涂料按照权利要求1-7任一所述的制备方法制备而成。
8.权利要求8所述的一种水性纳米陶瓷复合涂料的涂装方法，其特征在于：先将塑料基材表面打磨，使用400-600砂纸打至表面没有光泽，使用0.8毫米口径的喷枪，在2—3KG压力下喷涂，厚度在10—15微米之间，使用80度烘干30分钟。
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