树脂酸表面处理绢云母增强回收高密度聚乙烯的研究

Research on Recycle PE-HD Toughened by Sericite Surfacetreated by Resin Acid

采用绢云母粉、树脂酸、分散剂、回收高密度聚乙烯(RPE)等经双螺杆挤出机共混得到绢云母粉母料,用于制备RPE/绢云母复合材料,并表征了RPE/绢云母复合材料的性能。结果表明,树脂酸用量为6～8份时,改性云母片与RPE基体结合紧密、分散均匀,以片状形态存在,且对RPE结晶性无影响;随着云母粉含量的增加,RPE/绢云母复合材料的冲击强度和弯曲强度先升后降,而拉伸强度则逐渐下降,综合得出合适用量为15份。

In this paper, recycled high-density polyethylene powder, resin acid and a dispersant via a twin-screw （RPE） was compounded with sericite extruder resulting in a RPE/serieite composite. The tensile, flexural, impact, and microstructure properties of the composite were measured to identify the effect of sericite loading on these properties. It showed that the sericite flake modified with 6-8 phr resin acid were finely dispersed in RPE matrix with almost no effect on the melt point and crystal temperature of RPE composite. With increasing contents of sericite powder, the tensile strength reduced, Izod impact and flexural strengths increased first and then decrease＆ When the content of sericite was 15 phr, the comprehensive mechanical property was optimal.