文章摘要
石墨烯/星形聚丙烯酸酯纳米复合涂料的制备及性能
Preparation and Properties of Graphene / Star Polyacrylates Nanocomposite Coatings
  
DOI:10.16865/j.cnki.1000-7555.2017.11.028
中文关键词: 原子转移自由基聚合  石墨烯  星形聚丙烯酸酯  纳米复合涂料
英文关键词: atom transfer radical polymerization  graphene  star polyacrylate  nanocomposite coatings
基金项目:国家自然科学基金资助项目(51203014)
作者单位
陈 俊1, 徐海进1, 杨 蒙1, 任 强1, 卞建华2, 方建波1, 汪称意1, 李 坚1 1. 江苏省环境友好高分子材料重点实验室 常州大学材料科学与工程学院江苏 常州 2131642.上海振华重工(集团)常州油漆有限公司,江苏 常州 213164 
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中文摘要:
      采用电子转移活化再生催化剂原子转移自由基聚合(ARGET ATRP)方法,设计和制备了适合涂料用的线型、三臂和六臂星形聚丙烯酸酯。凝胶渗透色谱和差示扫描量热分析结果表明合成的聚丙烯酸酯相对分子质量与理论值相近,分布较窄,玻璃化转变温度适中。以这些树脂为基体,制得石墨烯/星形聚丙烯酸酯纳米复合涂料。相对于石墨烯/线型聚丙烯酸酯纳米复合涂料漆膜,石墨烯/星形聚丙烯酸酯纳米复合涂料漆膜具有低至0.8%的导电逾渗阈值。流变测试表明,星形聚丙烯酸酯溶液的黏度明显低于线型聚丙烯酸酯溶液的黏度,石墨烯的加入引起星形聚丙烯酸酯溶液的黏度增加程度远小于线型聚丙烯酸酯溶液黏度的增加程度。透射电镜和激光粒度分析结果证实石墨烯在星形聚丙烯酸酯中的分散性好于线型聚丙烯酸酯。石墨烯可以提高漆膜的模量、玻璃化转变温度及其它的基本物理性能。
英文摘要:
      Linear, 3-arm and 6-arm star acrylate polymers were devised and synthesized by activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP). The polyacrylates were characterized by gel permeation chromatography and differential scanning calorimetry. The results show that the molecular weight is close to the theoretical value with relatively low polydispersity, appropriate glass transition temperature. Nanocoatings based on the resulting polymers were developed. Electric surface resistivity was determined and results show that graphene/star polyacrylates nanocoating has electricity conducting percolation thresholds as low as 0.8%, which is much lower than that of linear polyacrylates counterpart. Rheological tests reveal that star polyacrylates has low solution viscosity compared with linear polyacrylates. The effect of graphene on increase of viscosity of star polyacrylates solution is much weaker compared to that of linear counterpart. Transmission electronic microscopy and laser particle size analyzer verify the better dispersion of graphene platelet in star polyacrylates matrix. DMA test analysis indicates that graphene can increase the modulus, glass transition temperature of the coating film. The basic physical properties of the coating film are improved as well by addition of graphene.
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