改性钛白粉在塑料领域中的应用研究

Study on the Application of Modified Titanium Dioxide in the Field of Plastics

塑料制品对其使用的钛白粉有特殊性能要求,因此主要针对塑料应用领域中的钛白粉进行有机包覆改性研究。采用单独或复配使用硅油A、酯类B、硅烷偶联剂C三种有机包膜剂改性钛白粉,通过对比不同工艺条件处理后的产品相关物理指标、分散性指标(滤压值)及产品耐热性能变化,确定使用酯类B有机包膜剂对钛白粉进行包覆,包覆后的钛白粉综合性能最优。通过微观结构表征发现,产品经酯类B处理后,其颗粒分散状态较好并未出现较大的团聚体,产品表面膜层均匀完整且颗粒之间无粘结。表明,使用酯类B有机包膜剂对产品进行包覆,产品的综合性能最优。

Plastic products have special performance requirements for the titanium dioxide used in them,therefore,this paper mainly studies the organic coating modification of titanium dioxide in the field of plastic applications.Titanium dioxide was modified by using three organic coating agents,namely silicone oil A,ester B and silane coupling agent C,alone or in combination.By comparing the related physical indexes,dispersibility indexes(filtration pressure value),and changes of product heat resistance after different process conditions,it is determined that the use of ester B organic coating agent to coat the product has the best comprehensive performance.According to the microstructure characterization,when the product is treated with ester B,the particles are in a good dispersion state,no large agglomerates appear,the surface film layer of the product is uniform and complete,and there is no bonding between particles.