石墨烯对聚氨酯/Al复合涂层光泽度及红外发射率性能的影响

被引：6

作者：

张伟钢

曾银伍

机构：

[1] 滁州学院

来源：

表面技术 | 2017年 / 46卷 / 12期

关键词：

复合涂层; 石墨烯; 光泽度; 红外发射率; 力学性能;

D O I：

10.16490/j.cnki.issn.1001-3660.2017.12.028

中图分类号：

TG174.4 [金属表面防护技术];

学科分类号：

080503 ;

摘要：

目的在不明显升高聚氨酯(PU)/Al复合涂层红外发射率的前提下,明显降低涂层的光泽度,获得低光泽与低发射率兼容的功能涂层。方法采用石墨烯改性PU/Al复合涂层,系统研究石墨烯改性对涂层的微结构、光泽度、红外发射率及力学性能的影响规律,并对其成因进行分析探讨。结果当石墨烯添加量(占Al粉质量的百分比)小于6%时,石墨烯改性可明显降低涂层的光泽度,且对涂层发射率的影响不明显。当石墨烯添加量为4%时,可使涂层同时具备低光泽与低发射率性能,其值分别为11.0和0.245。涂层的力学性能对石墨烯改性并不敏感,改性前后涂层的硬度、附着力和耐冲击强度分别可达到3H,1级和50kg·cm。结论石墨烯改性可明显降低PU/Al复合涂层的光泽度。当石墨烯添加量合适时,可使涂层同时具备低光泽与低发射率性能,从而实现涂层的红外与可见光兼容隐身。

引用

页码：175 / 178

页数：4

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