ZHAO Meijie， WU Man， LIU Xinmin， GUO Qingjie
（Key Laboratory of Clean Chemical Processing of Shandong Province； College of Chemical Engineering， Qingdao University of Science & Technology， Qingdao 266042， China）
Abstract：In order to improve the impact strength and flame retardance of waste polypropylene (WPP) -sorghum straw powder (SS) composites, the SS was modified by Silane KH550-Titanate TCA201 composite coupling agent and then POE-g-MAH was added into the WPP-MSS composites. The SS before and after modification were characterized by FTIR, XRD and TG.The effects of SS, composite coupling agent and POE-g-MAH on the properties of the composites were investigated. The pyrolysis characteristics of WPP-MSS-POE-g-MAH were studied by means of TG-FTIR at nitrogen atmosphere. The results show that after modification by 2% KH550-TCA201, the WPP-MSS composites is nonflammable and the impact strength of the composites is increased by 49%. When mass ratio of WPP to MSS, and to POE-g-MAH are 100, 30 and 8, the impact strength of the composites is increased by 135.6%. The pyrolysis gas of the composite material is released after 280 ℃, mainly for alkanes, olefins, CO2, etc., whereas a small amount of aldehydes and ketones are produced in the pyrolysis process.
Keywords: wood-plastics composites; surface modification; pyrolysis
文章编号：1008-5548（2018）03-0022-08
DOI：10.13732/j.issn.1008-5548.2018.03.005
收稿日期：2017-07-26， 修回日期：2017-09-20，在线出版时间：2018-05-08。
基金项目：山东省自然基金重点项目，编号：ZR2015QZ02；山东省重点研发计划项目，编号：2016GSF117005；山东省中青年科学家科研奖励基金项目，编号：ZR2016BB23。
第一作者简介：赵梅杰(1992—)，女，硕士研究生，研究方向为固体废弃物的资源化利用。E-mail：13589951757@163.com。
通信作者简介：郭庆杰(1967—)，男，博士，教授，博士生导师，研究方向为流态化工程、能源环境工程。E-mail：qj_guo@yahoo.com。
