采用分散聚合和“受限聚合-原位生长”法分别制备了聚甲基丙烯酸缩水甘油酯(PGMA)微球和PGMA@PANI(聚苯胺)复合微球,通过改变聚乙烯基吡咯烷酮(PVP)含量以及甲基丙烯酸缩水甘油酯(GMA)浓度实现对PGMA微球粒径和分散度的调控。在此基础上,通过改变苯胺(An)/PGMA、CTAB/An的比例、正戊醇的添加来调控 PGMA@PANI复合微球的形貌。结果表明,在0.10g/mL GMA、10%(wt,质量分数,下同)PVP、50%十六烷基三甲基溴化铵(CTAB)和30% An条件下,可得到均匀负载PANI纳米线的聚合物复合微球。以复合微球为防腐助剂制备环氧型防腐涂料的测试结果显示:PGMA@PANI复合微球的添加量为4.5%时,防腐涂层耐盐雾时间为816h,耐盐水时间为960h,展现了较好的防腐性能和机械性能。
PGMA microspheres and PGMA@PANI microspheres were prepared by dispersion polymerization and“competitive adsorption-restricted polymerization”,respectively.Particle size and dispersion of PGMA were adjusted by PVP content and concentration of GMA.The morphology of PGMA@PANI can be adjusted by changing the proportion of An/PGMA and CTAB/An and adding n-pentanol.The results showed that the optimal preparation condition of PGMA microspheres with uniform coating of PANI nanowires was 0.10 g/ml GMA,10 wt% PVP,50 wt% CTAB and 30wt% An.Epoxy-based coatings were prepared using PGMA@PANI as anticorrosion agents and the results demonstrated that epoxy-based coating with the 4.5% PGMA@PANI had better mechanical properties and corrosion protection properties,viz.,the salt spray resistance time and the salt water resistance time were 816h and 960h,respectively.
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基金资助
福建省科技创新平台(2014H2006,2014I2005);厦门市科技重大专项(3502Z20171002);石墨烯技术研发和产业发展专项项目;福建省科技重大专项(2018HZ0001-1)
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