混料设计在车用聚丙烯材料配方中的应用

Application of Mixture Design in Formulation of Polypropylene Compounds for Automobile

混料设计是解决配方问题非常有用的工具,本文介绍了混料设计结合Minitab统计软件,应用于车用聚丙烯材料配方设计的方法。“FL-TD20”产品混料设计推导出了熔体流动速率的有效回归方程;“JL-TD20”产品混料设计,分析出3种成分对密度和灰分影响不显著,但是对熔体流动速率、缺口冲击强度、抗拉强度、热变形温度和弯曲强度有显著影响。混料设计还对5种有显著影响的性能指标推导出了回归方程,并绘制出同时满足这5种性能指标的合格配方范围。试验验证表明,试验结果与预测值误差在5%范围内。

Mixture design is a very useful method to solve the problems in formulation determination of materials. This paper introduced the applications of mixture design in the formulation design for two polypropylene (PP)-based automotive materials, FL-TD20 and JL-TD20, by means of the Minitab statistical software.An effective regression equation of melt flow rate was deduced for FL-TD20 product. As for the mixture design of JL-TD20 product, three components were found to have no significant influence on the density and ash content of PP compounds, and however therewasa remarkable effect from them on the melt flow rate, notchedimpact strength, tensile strength, thermal deformation temperature and bending strength of the compounds. The regression equation based on five performance indexes was deduced, andthe ranges of qualified formulations based on performance indexeswere further determined. The predicted values were found to have the differences less than 5 % according to the validation of experimental results.