CN112745759A - 一种耐高温石墨烯自润滑水性防腐涂料的制备方法 - Google Patents
一种耐高温石墨烯自润滑水性防腐涂料的制备方法 Download PDFInfo
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Abstract
一种耐高温石墨烯自润滑水性防腐涂料的制备方法,它涉及一种物理搅拌方法制备石墨烯水性防腐涂料的方法。本发明为了解决现有水性防腐涂料石墨烯分布不均匀,屏蔽能力不足等问题。本方法如下:一、量取石墨烯粉体;二、将石墨烯粉体放入水中,配置为石墨烯溶液;三、将步骤二配制溶液放入超声震荡器中震荡;四、将PAI加入步骤三配制溶液混合搅拌均匀。本发明制备石墨烯水性防腐涂料成本低,操作简单、尺寸分布均匀。
Description
技术领域
本发明涉及一种耐高温石墨烯自润滑水性防腐涂料的制备方法。
背景技术
石墨烯(Graphene)是由碳原子以sp2杂化形成的蜂窝状平面薄膜,是只有一个原子层厚度的二维材料,又叫做单原子层石墨。石墨烯作为单层碳纳米材料,可以制备成涂层或者作为填料用于防腐涂料中,其良好的导电性能和片状搭接阻隔性能,可以对氧和腐蚀介质起到屏蔽作用,降低了防腐涂层的渗透性能,从而提高涂层的防腐蚀性能。
水性涂料以水为分散介质,因其产品无气味,VOC含量低、绿色环保等优点逐渐成为涂料的主要发展方向和研究重点。然而水性涂料防腐性能远不如溶剂型涂料,因为在成膜过程中,水性涂层中保留了亲水性基团,从而降低了蒸汽扩散的屏蔽能力和防潮能力。因此,为了提高水性涂料的耐蚀性,必须添加缓蚀剂或填料。石墨烯因其独特的纳米结构、优异的物理性能、大的比表面积、超疏水性能和与聚合物基体的良好相容性等在很多领域得到了广泛的应用,研究表明将石墨烯填料加入到水性涂料中,可以填充树脂缺陷,有效防止金属腐蚀,但由于石墨烯片层之间强烈的π-π作用导致团聚、形成缺陷,无法阻隔腐蚀介质的浸入。
发明内容
本发明为了解决现有水性防腐涂料石墨烯分布不均匀,屏蔽能力不足等问题。提供了一种石墨烯水性防腐涂料的制备方法。
一种耐高温石墨烯自润滑水性防腐涂料的制备方法按照以下步骤进行:
一、量取石墨烯粉体,石墨烯层数为1-20层;
二、将蒸馏水加入石墨烯容器中,配置石墨烯溶液,按照石墨烯与水的质量比为1:50~20000;
三、将步骤二所得溶液放入超声振荡器中振荡均匀,振荡时间为1~360min,振荡温度为1~100℃;
四、量取聚酰酰亚胺乳液,按照质量比1~40000:1与石墨烯溶液混合搅拌均匀。PAI乳液的浓度为0.1~1000g/L。
附图说明
图1是实验一种耐高温石墨烯自润滑水性防腐涂料的照片及其中石墨烯的 TEM照片。
具体实施方式
本发明技术方案不局限于以下所列举具体实施方式,还包括各具体实施方式间的任意组合。
具体实施方式一:本实施方式一种耐高温石墨烯自润滑水性防腐涂料的制备方法按照以下步骤进行:
一、量取石墨烯粉体,石墨烯层数为1-20层;
二、将蒸馏水加入石墨烯容器中,配置石墨烯溶液,按照石墨烯与水的质量比为1:50~20000;
三、将步骤二所得溶液放入超声振荡器中振荡均匀,振荡时间为1~360min,振荡温度为1~100℃;
四、量取聚酰酰亚胺乳液,按照质量比1~40000:1与石墨烯溶液混合搅拌均匀。PAI乳液的浓度为0.1~1000g/L。
具体实施方式二:本实施方式与具体实施方式一不同的是步骤一中石墨烯层数为1-10层。其它与具体实施方式一相同。
具体实施方式三:本实施方式与具体实施方式一或二之一不同的是步骤一中石墨烯层数为1-5层。其它与具体实施方式一或二之一相同。
具体实施方式四:本实施方式与具体实施方式一至三之一不同的是步骤二中石墨烯与水的质量比为1:50~10000。其它与具体实施方式一至三之一相同。
具体实施方式五:本实施方式与具体实施方式一至四之一不同的是步骤三中将溶液放入超声振荡器中振荡均匀,振荡时间为10~50min,振荡温度为1~80℃。其它与具体实施方式一至四之一相同。
具体实施方式六:本实施方式与具体实施方式一至五之一不同的是步骤三中将溶液放入超声振荡器中振荡均匀,振荡时间为20min,振荡温度为40℃。其它与具体实施方式一至五之一相同。
具体实施方式七:本实施方式与具体实施方式一至六之一不同的是步骤四中量取聚酰酰亚胺乳液,按照质量比1~4000:1与石墨烯溶液混合搅拌均匀。PAI乳液的浓度为1~800g/L。其它与具体实施方式一至六之一相同。
具体实施方式八:本实施方式与具体实施方式一至七之一不同的是步骤四中量取聚酰酰亚胺乳液,按照质量比1~800:1与石墨烯溶液混合搅拌均匀。PAI乳液的浓度为0.5~500g/L其它与具体实施方式一至七之一相同。
采用下述实验验证本发明效果:
实验一:
一种耐高温石墨烯自润滑水性防腐涂料的制备方法
一、量取石墨烯粉体,石墨烯层数为1-5层;
二、将蒸馏水加入石墨烯容器中,配置石墨烯溶液,按照石墨烯与水的质量比为1:100;
三、将步骤二所得溶液放入超声振荡器中振荡均匀,振荡时间为30min,振荡温度为60℃;
四、量取聚酰酰亚胺乳液,按照质量比400:1与石墨烯溶液混合搅拌均匀。PAI乳液的浓度为200g/L。
实验二:
一种耐高温石墨烯自润滑水性防腐涂料的制备方法
一、量取石墨烯粉体,石墨烯层数为1-5层;
二、将蒸馏水加入石墨烯容器中,配置石墨烯溶液,按照石墨烯与水的质量比为1:150;
三、将步骤二所得溶液放入超声振荡器中振荡均匀,振荡时间为40min,振荡温度为 50℃;
四、量取聚酰酰亚胺乳液,按照质量比500:1与石墨烯溶液混合搅拌均匀。PAI乳液的浓度为260g/L。
表1是实验一制备的一种耐高温石墨烯自润滑水性防腐涂料的性能指标。
项目 | 涂料性能 |
干燥时间 | 室温,表干≤2h,实干24h |
硬度 | ≥HB |
耐冲击 | ≥50cm |
柔韧性 | 2mm |
附着力 | 0级 |
粘结强度 | ≥10MPa |
海水干湿循环,100次, | ≥10MPa |
耐盐雾性, | ≥1000h |
耐醋酸性,100%醋酸 | ≥2000h |
耐加速老化 | ≥1000h |
固化温度 | 280℃ |
表1
Claims (5)
1.一种耐高温石墨烯自润滑水性防腐涂料的制备方法,其特征在于一种耐高温石墨烯自润滑水性防腐涂料的制备方法按照以下步骤进行:
一、量取石墨烯粉体,石墨烯层数为1-20层;
二、将蒸馏水加入石墨烯容器中,配置石墨烯溶液,按照石墨烯与水的质量比为1:50~20000;
三、将步骤二所得溶液放入超声振荡器中振荡均匀,振荡时间为1~360min,振荡温度为1~100℃;
四、量取聚酰酰亚胺乳液,按照质量比1~40000:1与石墨烯溶液混合搅拌均匀。PAI乳液的浓度为0.1~1000g/L。
2.根据权力根据权利要求1所述一种耐高温石墨烯自润滑水性防腐涂料的制备方法,其特征在于步骤一中,石墨烯层数为1-20层。
3.根据权力根据权利要求1所述一种耐高温石墨烯自润滑水性防腐涂料的制备方法,其特征在于步骤二中石墨烯与水的质量比为1:50~20000。
4.根据权力根据权利要求1所述一种耐高温石墨烯自润滑水性防腐涂料的制备方法,其特征在于步骤三中振荡时间为1~360min,振荡温度为1~100℃。
5.根据权力根据权利要求1所述一种耐高温石墨烯自润滑水性防腐涂料的制备方法,其特征在于步骤四中量取PAI乳液,将PAI乳液按照质量比1~40000:1与石墨烯溶液混合搅拌均匀。PAI乳液的浓度为0.1~1000g/L。
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