摘要
采用细乳液技术制备了一种以二氧化硅为壳层的硅油微胶囊乳液。考察了乳液pH、表面活性剂组成和核壳比例等因素对微胶囊制备的影响,获得了稳定性好、固含量高达17.6%、以二氧化硅为壳层的硅油微胶囊乳液。将此硅油微胶囊乳液与丙烯酸乳液和颜填料混合配制成水性抗覆冰涂料,考察了硅油微胶囊含量和颜基比对涂层老化前后的水接触角和覆冰附着力的影响规律。研究发现,在硅油含量为4.2%、颜基比为5.0时,涂层的防覆冰性能最佳。
A silicone oil microcapsule emulsion with silica shell was prepared by miniemulsion technique. The effects of pH,type of surfactants and composition of silica shell precursors on the formation of silicone oil microcapsules were studied. A silicone oil microcapsule emulsion with good stability,solid content up to 17.6% and silica shell was obtained. The silicone oil microcapsule emulsion was incorporated into acrylic latex as well as pigments and fillers to prepare waterborne anti-icing coatings. The water contact angles and ice adhesion of the coatings with various silicone oil contents or various pigment-to-binder ratios were determined before and after QUV accelerated weathering tests. Results indicated that the best anti-icing performance was achieved for the coating with pigment-to-binder ratio of 5.0 and silicone oil content of 4.2%.
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2011年第6期57-61,共5页
Electroplating & Finishing
基金
上海市科委纳米专项项目(0852nm00800)
关键词
防覆冰涂料
硅油
微胶囊
细乳液
水接触角
anti-icing coating
silicone oil
microcapsule
miniemulsion
water contact angle
