摘要： 以壬基酚聚氧乙烯(4)醚硫酸铵(CO-436)为乳化剂，过硫酸铵为引发剂，采用不同油度醇酸树脂和丙烯 酸酯为共聚单体制备醇酸 -丙烯酸酯杂化乳液，对醇酸树脂油度、醇酸树脂 /丙烯酸酯质量比、乳化剂和引发剂种类、用量对杂化乳液的影响进行了研究。采用 DSC、激光粒度分布仪等测试仪器分别对杂化乳液中聚合物的热性能、杂化乳液的粒径分布进行了表征。结果表明:在同样的玻璃化转变温度(Tg =25.6°C)下，杂化乳液的成膜性优于苯丙乳液。醇酸树脂的适宜油度为 62% ~67%，醇酸树脂和丙烯酸酯的质量比为 3∶7，乳化剂的适宜用量为 2.0% ~2.5%，引发剂的适宜用量为 0.4% ~0.8%。
关键词:
醇酸树脂,
丙烯酸树脂,
杂化乳液,
光泽,
接枝率
Abstract: The alkyd -acrylic hybrid emulsion was prepared by using nonylphenol polyoxyethylene(4)ether ammonium sulfate(CO-436) as emulsifier, ammonium persulfate as initiator different oil -length alkyd and acrylic as comonomers, Ihe effect of oil -length of alkyds, alkyd/acrylic ratio(m/m), the kinds and dosage of emulsifiers and initiators on the hybrid emulsion was investigated. The thermal property and particle size distribution of the hybrid emulsion were characterized by DSC and laser particle size tester. The results showed that at the same glass transition temperature(Tg =25. 6 ℃), film forming property of the hybrid emulsion was better than styrene-acrylic system. The optimum oil-length of alkyd was 62%~67%, alkyd/acrylic=3: 7(m/m), dosage of emulsifier 2. 0%~2. 5% and the dosage of initiator 0.4%-0.8%.
Key words:
alkyd resin,
acrylic resin,
hybrid emulsion,
gloss,
grafting degree
崔锦峰, 李 军, 罗志河, 盛永宁, 李华明, 陈碧碧, 郭军红, 周应萍, 杨保平. 醇酸-丙烯酸酯杂化乳液的制备及其性能研究[J]. 涂料工业, 2013, 43(3): 58-62.
Cui Jinfeng, Li Jun, Luo Zhihe, Sheng Yongning, Li Huaming, Chen Bibi, Guo Junhong, Zhou Yingping, Yang Baoping. Research on Preparation and Performance of Alkyd -Acrylic Hybrid Emulsion[J]. Paint & Coatings Industry, 2013, 43(3): 58-62.