改性贝壳粉对苯丙乳液保温涂料性能的影响  

Effect of modified seashell powder on thermal insulating property of styrene-acrylic latex

作　　者：陈泳志 黄永军 肖之荣 吴树聪 李宇彬 CHEN Yongzhi;HUANG Yongjun;XIAO Zhirong;WU Shucong;LI Yubin(Faculty of Chemistry and Environment Science,Guangdong Ocean University,Zhanjiang 524088,China;Zhanjiang Xin Beibei Biotechnology Co.,Ltd.,Zhanjiang 524000,China)

机构地区：[1]广东海洋大学化学与环境学院,广东湛江524088 [2]湛江市新贝贝生物科技有限公司,广东湛江524000

出　　处：《电镀与涂饰》2023年第16期57-62,共6页Electroplating & Finishing

基　　金：湛江市科技发展专项资金竞争性分配项目──贝壳粉基环保型涂料制备关键技术研究(2018A02017);广东海洋大学-湛江市新贝贝生物科技有限公司科研合作项目(B19042);广东海洋大学南海青年学者项目(002029002010);广东海洋大学创新创业团队项目(521201004030)。

摘　　要：通过羧甲基纤维素钠(CMC)、海藻酸钠(ALG)与苯丙乳液(SAE)交联反应合成了一种改性苯丙乳液(SSC),辅以KH-550硅烷偶联剂改性贝壳粉(SP)等填料,制得一种改性贝壳粉-苯丙乳液(SP-SSC)涂料,对其保温性能及力学性能进行研究。实验结果表明,硅烷偶联剂改性后的贝壳粉在乳液中的分散性更好,增强了涂层的保温性及柔韧性。添加量为28.0%的SP填料与SSC乳液所形成的涂料的综合性能最佳,其涂层的导热系数低至0.118W/(m·K),隔热温差达10.2°C,耐擦洗性超过16000次,符合GB/T 9756–2018《合成树脂乳液内墙涂料》标准的要求。The styrene-acrylic emulsion(SAE)was crosslinked with sodium carboxymethylcellulose(CMC)and sodium alginate(ALG)to synthesize a modified styrene-acrylic(SSC)emulsion.The seashell powder(SP)modified by silane coupling agent KH-550 and other fillers were blended with the SSC emulsion,forming a SP-SSC latex.The thermal insulation performance and mechanical properties of the latex coating were tested.The results showed that the silane coupling agent modified seashell powder had good dispersibility in the SSC emulsion and enhanced the thermal insulation performance and flexibility of the latex coating.The SP-SSC latex prepared with 28.0%(mass fraction)of SP as filler showed the best comprehensive performance.The coated specimen had a thermal conductivity as low as 0.118 W/(m·K),a temperature difference as large as 10.2°C between the hot surface and cold surface,and a scrub resistance more than 16000 times,meeting the requirement of the GB/T 9756–2018 standard Synthetic Resin Emulsion Coatings for Interior Wall.

关 键 词：贝壳粉 改性 苯丙乳液 隔热涂料 耐候性 耐擦洗 

分 类 号：TQ633[化学工程—精细化工]