壳聚糖基阻燃剂制备及其在防火涂层中应用  

Preparation of a Chitosan-based Flame Retardant and Its Application in Fireproofing Coating

作　　者：王娜 王树伟 滕海伟 王升 方庆红 WANG Na;WANG Shu-wei;TENG Hai-wei;WANG Sheng;FANG Qing-hong(School of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,Liaoning,China)

机构地区：[1]沈阳化工大学材料科学与工程学院

出　　处：《精细化工》2018年第11期1968-1973,共6页Fine Chemicals

基　　金：辽宁省百千万人才工程([2017]62);辽财指高端人才([2016]864);沈阳市科技计划项目(17-51-6-00);辽宁省高校创新人才计划([2017]053);沈阳市中青年科技创新人才计划(RC170118)~~

摘　　要：以生物材料壳聚糖（CTS）、季戊四醇磷酸酯（PEPA）、二苯甲烷二异氰酸酯（MDI）为原料,制备壳聚糖基膨胀型阻燃剂（PMC）。并通过FTIR、XRD、TG对阻燃剂的结构及热性能进行了表征;以不同阻燃剂对水性环氧树脂涂层进行阻燃化改性,制备了3种阻燃涂层EP1、EP2和EP3,并将阻燃涂层用做钢结构的防护涂层。用TG、极限氧指数（LOI）、UL-94、SEM对样品的热性能及阻燃性能进行了表征,用附着力实验仪测试了涂层的附着力。结果表明：当PMC质量分数为10%时,EP3可通过UL-94 V-0测试;相比纯EP涂层,500℃时,EP3残炭量提高47%,LOI可达25.5%。附着力测试结果表明,PMC的添加不会降低涂层的附着力。A chitosan-based intumescent flame retardant（PMC） was synthesized by using chitosan（CTS）, pentaerythritol phosphate（PEPA） and diphenyl-methane-diisocyanate（MDI） as raw materials. FTIR, XRD and TG were used to characterize the structure and thermal stability of PMC. Subsequently, different flameretardants were used in preparing fire-retardant epoxy resin（EP） coatings to improve their flame-retardant properties. Three obtained flame retardant coatings, named EP1, EP2 and EP3, were used as protective coatings for steel structure. The thermal properties and flame retardancy of the samples were characterized by TG, limiting oxygen index（LOI）, UL-94 and SEM, and the adhesions of the coatings were measured using adhesion tester. The results showed that the mass fraction of PMC in EP was 10%, the obtained EP3 could meet the standard of UL-94 V-0 rating with a LOI value of 25.5%. The amount of residual carbon of EP3 increased by 47% compared with that of pure EP coating at 500 ℃. The adhesion experiment results showed that the addition of PMC could not affect the bonding strength between the coating and the substrate.

关 键 词：膨胀型阻燃剂 水性环氧涂层 壳聚糖 季戊四醇磷酸酯 生物基 建筑用化学品 

分 类 号：TQ314[化学工程—高聚物工业]