新型分散剂在PP/玻璃纤维/硅灰石复合材料中的应用

摘要

选择五种新型结构的分散剂(DZHA–200,DZHA–17,JWF–EBA,JWF–EBC,JWF–EBM),考察分散剂对聚丙烯(PP)/玻璃纤维/硅灰石复合材料加工性能、宏观性能及分散性的影响.实验结果显示,1份分散剂的引入可明显提高和改善复合材料的加工性能、宏观性能和分散性.当加入1份分散剂DZHA–17时,复合材料的熔体流动速率约是未加分散剂时的5.5倍,挤出机扭矩和电流分别降低到7.4 N·m和35 A.断裂伸长率、缺口冲击强度和60° 条件下的光泽度也明显提高.五种新型结构分散剂在聚合物复合材料中都显示出润滑性、分散性和偶联性等多功能性,但它们对聚合物复合材料性能影响程度有一定区别.%The effects of five kinds of novel dispersants (DZHA–200,DZHA–17,JWF–EBA,JWF–EBC,JWF–EBM) on the processing properties,macro-properties and dispersibility of polypropylene (PP)/glass fiber/wollastonite composites were studied by addition of 1 phr dispersant in composites. The experimental results show that the processing properties,macro-properties and dispersibility of the composites are clearly enhanced due to the addition of the different dispersants into composite. When the content of dispersant DZHA–17 is 1 phr in the composite,the melting flow rate of the composite is about 5.5 times of that without disper-sant,and torque and electric current of extruder are reduced to 7.4 N · m and 35 A,respectively. The elongation at break,notched impact strengthen and glossiness at 60° of the composites are increased apparently. Five dispersants all show lubricanting,dispersing and coupled properties in the composites,but they show different effects on the properties of the composites.