随着人们对生活质量及室内装饰材料要求的日益提高,功能性涂料越来越受到人们的关注.以硅藻土为基料,通过 TiCl4均匀水解法对硅藻土进行载钛处理,再通过传统涂料工艺制备硅藻土功能涂料.研究表明,均匀水解法获得的载钛硅藻土负载率高且稳定；最优的载钛条件为理论 TiO 2的负载量100％,温度80℃、尿素浓度0．2 mol/L、反应时间1 h,TiO 2实际负载率可达74．7％,载钛硅藻土的最低抑菌浓度为8 g/L,抑菌率达99．7％；利用载钛硅藻土制备的硅藻土功能涂料吸湿率为12％,抑菌圈尺寸为4 mm,表明硅藻土功能涂料具有良好的吸湿性能和抑菌性能,是一种具有良好应用前景的涂料.
With the increasing requirements on the quality of life and interior decoration materials,functional coating attracts more and more attention.A kind of functional coating was prepared by traditional coating tech-nology using diatomite as the base material.Titanium was loaded on the diatomite through the homogeneous hydrolysis method of titanic chloride.Results showed that the titanium loading on the diatomite was high and stable.The optimum loading condition was as follows,the theoretical content of loaded titanium was 100%, temperature was 80 ℃,concentration of urea was 0.2 mol/L,reaction time was 1 h.Under this condition the content of actual loaded TiO 2 reached up to 74.7% and the minimal inhibitory concentration of the diatomite loading titanium was 8 g/L as the rate of antibacterial efficiency up to 99.7%.The moisture absorption of the functional coating prepared by the diatomite loading titanium was 12%;the diameter of antibacterial circle was 4 mm.It indicated that the functional coating with diatomite loading titanium had good moisture absorption and antibacterial performance which suggesting it would be a kind of promoting coating.
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