Abstract:
The title waterborne acrylate emulsion（PA）was prepared from N-carbamoylmaleamic（NCMA）butyl acrylate（BA）and acrylic acid（AA）at the presence of cumyl N-carbazolylcarbodithioare（，CCBD）as reversible addition fragmentation chain transfer radical polymerization（RAFT）agent. The molecular structure of PA was characterized by FT-IR and 1H NMR. Effects of the amount of CCBD and APS，polymerization time were investigated by usingimpact strength as measurement indicator. The results showed that the optimal condition includes： the amount of CCBD and APS were 0.5% and 0.5% respectiverly，polymerization time was 4.0 h.The PA prepared under optimal condition provided excellent comprehensive properties.
Key words:
crylic,
impact strength,
emulsion,
RAFT
摘要： 以 N-咔唑二硫代甲酸异丙苯酯（ CCBD）为链转移剂，以 N-胺基甲酰马来酸（ NCMA）、丙烯酸丁酯（ BA）、丙烯酸（ AA）为单体，通过可逆加成 -断裂链转移聚合（ RAFT）制备了水性丙烯酸酯类乳液（ PA），并对 PA的结构进行了表征。考察了 CCBD用量、过硫酸铵（ APS）用量和反应时间等因素对耐冲击性的影响，并对最优条件下制备的 PA进行应用性能测试。结果表明：最优条件为反应时间 4.0 h、CCBD用量 0.5%（摩尔分数）、 APS用量为 5%（摩尔分数）。以最优反应条件制得的 PA具有优异的综合性能。
关键词:
丙烯酸,
耐冲击性,
乳液,
可逆加成 -断裂链转移聚合
CLC Number:
Wang Haiyue, Liu Jiaxin, Yao Zhiguo, Li Jixin. Synthesis and Property of Waterborne Acrylic Emulsion via Reversible Addition Fragmentation Chain Transfer Radical Polymerization[J]. Paint & Coatings Industry, 2019, 49(6): 7-10.
王海玥, 刘佳鑫, 姚治国, 李继新. 可逆加成 -断裂链转移聚合制备 水性丙烯酸酯乳液及其性能研究[J]. 涂料工业, 2019, 49(6): 7-10.