高附着轻质复材用防护涂料的研制  

Development of Flame Retardant Protective Coatings for High Adhesion Lightweight Composite Materials

作　　者：孙坤 欧阳[2] 李海燕[1] 张建英[1] 曹仁伟 宋慈 高梦岩 秦颖 邱家浩 朱明绪 SUN Kun;OU Yang;LI Haiyan;ZHANG Jianying;CAO Renwei;SONG Ci;GAO Mengyan;QIN Ying;QIU Jiahao;ZHU Mingxu(State Key Laboratory of Marine Coating,Marine Chemical Research Institute Co.,Ltd.,Qingdao,Shandong 266071,China;Shenyang Aircraft Industry(Group)Co.,Ltd.,Shenyang 110850,China)

机构地区：[1]海洋化工研究院有限公司,海洋涂料国家重点实验室,山东青岛266071 [2]沈阳飞机工业(集团)有限公司,沈阳110850

出　　处：《涂料工业》2024年第11期30-35,41,共7页Paint & Coatings Industry

摘　　要：为提升碳纤维/环氧复合材料的防护性能,降低其吸水率,延长复合材料的使用寿命,采用不同相对分子质量的聚四氢呋喃醚二醇(PTMG)对环氧树脂进行改性,设计合成了高性能改性树脂作为成膜物,制备了复材用防护涂料。同时,进一步调控了涂料的颜基比,系统研究了涂层的耐候性、附着力、耐水性及阻燃性等性能。结果表明:当采用相对分子质量为800和2 000的PTMG且二者质量比为3∶2时,得到的改性树脂性能最佳。当涂料颜基比为1.1时,制备的涂层具有良好的耐环境适应性、耐水性,吸水率低至0.6%,氧指数为25.8%,拉开法附着力可达25.33 MPa,能够为复合材料提供良好的防护能力,具有广阔的应用前景。In order to improve the protective properties of carbon fiber/epoxy composites,reduce their water absorption,and prolong the service life of the composites,poly-tetrahydrofuran-ether-glycol(PTMG)with different relative molecular masses was used to modify epoxy resin,and a high-performance modified resin was designed and synthesized as a film-former,and protective coatings for composites were prepared.At the same time,the pigment/binder ratio of the coatings was further regulated,and the properties of the coatings such as weather resistance,adhesion,water resistance and flame retardant were systematically studied.The results showed that when the mass ratio of PTMG with 800 molecular weight and PTMG with 2000 molecular weight was 1.5,the properties of the modified resin reached the best state.When the coating pigment/binder ratio was 1.1,the prepared coating had good environmental resistance and water resistance,the water absorption rate was as low as 0.6%,the oxygen index was 25.8%,and the adhesion by pulling method could reach 25.33 MPa,which could provide good protection ability for composite materials,and had broad application prospects.

关 键 词：复合材料 高附着 轻质 阻燃 涂料 

分 类 号：TQ637.6[化学工程—精细化工]