摘要： 以1-烯丙氧基-3-(4-壬基苯氧基)-2-丙醇聚氧乙烯(10)醚单磷酸(ANPEO10-P1)为可聚合乳化剂合成了醋酸乙烯酯(VAc)-叔碳酸乙烯酯(Veova-10)共聚乳液,考察了ANPEO10-P1用量对乳液的聚合稳定性、离子稳定性及胶膜耐水性的影响,并利用热重分析和拉伸试验等方法对胶膜进行了表征。结果表明:当ANPEO10-P1用量为单体质量的5%时,合成的乳液聚合稳定性较好,单体转化率达到96.59%;与常规复合乳化体系(SDS/OP-10)相比,采用反应性乳化剂ANPEO10-P1制备的乳液离子稳定性好,乳胶膜耐水性增强,膜的力学性能提高。热重分析表明:乳胶膜的分解温度为285~510℃,与膨胀型阻燃体系的分解温度匹配性较好,乳液可用于膨胀型防火涂料。
关键词:
反应性乳化剂,
醋酸乙烯酯,
叔碳酸乙烯酯,
力学性能,
稳定性
Abstract: VAc/Veova-10 copolymer emulsion was synthesized with ANPEO10-P1 as the reactive emulsifier. The influence of the dosages of ANPEO10-P1 the polymerization stability, electrolyte stability of the emulsion and water resistance of the films were discussed. Moreover, the properties of the emulsions and their films were characterized by thermogravimetry (TG) and tensile test machine. The results showed that when the ANPEO10-P1 dosage was 5% of total monomer mass, the monomer conversion was up to 96.59%. Compared with the traditional compound emulsifier SDS /OP-10, the reactive emulsifier could remarkably improve the water resistance, electrolyte stability and the mechanical property of the film.Thermogravimetry analysis showed that the degradation temperature of the film was 285~510 ℃,which was compatible with the degradation temperature range of a typical intumescent fire retrardant system. Therefore the VAc/Veova-10 copolymer emulsion could be used as binders of the intumescent fireproof coatings.
Key words:
reactive emulsifier,
vinyl acetate vinyl ester of versatic acid,
mechanical properties;stability
邱珍珍, 夏正斌, 林晓琼, 张燕红. 可聚合乳化剂合成醋酸乙烯酯-叔碳酸乙烯酯共聚乳液[J]. 涂料工业, 2013, 43(9): 47-51.
Qiu Zhenzhen, Xia Zhengbin, Lin Xiaoqiong, Zhang Yanhong. Synthesis of VAc/Veova-10 Copolymer Emulsion Using Reactive Emulsifier[J]. Paint & Coatings Industry, 2013, 43(9): 47-51.