苯丙乳胶漆的制备工艺与性能研究

Preparation and properties of styrene-acrylic emulsion paint

采用不同晶型、种类、粒径的颜填料,系统考察了乳胶漆颜料浆液细度随时间或搅拌转速的变化规律,优化了苯丙乳胶漆的配伍工艺。结果表明,在相同分散时间内,金红石钛白粉作颜料的浆液细度比锐钛矿型钛白粉颜料浆液细度小;煅烧高岭土作填料的浆液细度比分别以重钙、滑石粉、硅藻土和蒙脱石粉作填料时颜料浆液细度小;浆液细度均随分散时间和搅拌转速的增加而减小,随填料粒径的减小而减小;以金红石型钛白粉和1 250目煅烧高岭土,搅拌转速为1 500 r/min时制备出的乳胶漆颜料浆液细度在分散时间为15 min时为45μm,胶粒粒径主要分布在1～10μm的范围内,粘度稳定性较好。

The effects of dispersion time and stirring speed on the fineness of emulsion paint pigment slurry by adding pigments with different crystals and five fillers with different particle sizes were investigated, respectively. The experimental results showed that fineness of emulsion paint pigment slurry with rutile TiO2 was smaller than that with anatase TiO2. The fineness of emulsion paint pigment slurry with calcined kaolin was smaller than that with heavy calcium, talc, diatomite and montmorillonite powder in the same dispersion time, respectively. The fineness of emulsion paint pigment slurry reduced with increasing the dispersion time and stirring speed, as well as decreasing the particle size of fillers. The emulsion paint was prepared with fineness of 45μm at the dispersion time of 15 min, particle size distribution of 1 - 10μm and high viscosity stability by using rutile TiO2 and calcined kaolin with the particle size of 1 250 mesh at the stirring speed of 1 500 r/min.