摘要
将可回收的生物质(花生壳纤维、秸秆纤维、芦苇纤维)与废弃聚苯乙烯(PS)熔融共混,制备了废弃PS/生物质复合材料。通过力学性能、加工流动性能分析,优化了生物质纤维种类和用量。比较了弹性体氢化苯乙烯-丁二烯嵌段共聚物(SEBS)和三元乙丙橡胶(EPDM)对废弃PS/生物质复合材料力学性能的影响。结果表明,选择芦苇纤维,芦苇与聚苯乙烯质量比为30∶50时,复合材料的力学性能比添加其他两种纤维的复合材料更好。添加弹性体SEBS和EPDM后,废弃聚苯乙烯/芦苇纤维复合材料的冲击强度分别提高了36.1%、6.56%,SEBS更有利于复合材料韧性的提升。废弃聚苯乙烯/芦苇复合材料中加入弹性体SEBS、EPDM后,最大分解温度分别提高了2.76%和2.57%,500℃的残炭率分别提高了109%和3.99%。最大分解速率分别下降了0.44%/℃和0.34%/℃,表明弹性体有利于提高废弃PS/芦苇复合材料的高温热稳定性。
A kind of wasted polystyrene（PS）/biomass composite was prepared by blending the recyclable biomass（peanut shell fiber,straw fiber and reed fiber）with waste PS.The biomass fiber type and fiber content were optimized by analyzing the mechanical properties and processing flow performance.Effect of elastomer ethylene propylene diene monomer（EPDM）and hydrogenated styrene-ethylene-butylene-styrene triblock copolymer（SEBS）of wasted PS/biomass composites on mechanical properties was compared.The results showed that the mechanical properties of the composites were better than those of the other two fiber composites when the mass ratio of reed fiber and PS was 30∶50.The impact strength of wasted PS/reed fiber composites increased by 36.1% and6.56%respectively when SEBS and EPDM were added,and SEBS was more favorable to improving the toughness of composites.The maximum decomposing temperature increased by 2.76%and 2.57%when adding SEBS and EPDM in the wasted PS/reed composites,while the carbon residue rate increased by 109% and 3.99% at 500 ℃,respectively.The maximum decomposing rate decreased by0.44%/℃ and 0.34%/℃,indicating that elastomer is beneficial to improving the thermal stability of waste PS/reed fiber composites.
作者
张伟明
夏英
张馨月
李智佳
丛世杰
ZHANG Weiming;XlA Ying;ZHANG Xinyue;LI Zhijia;OONG Shijie(School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China)
出处
《大连工业大学学报》
CAS
北大核心
2018年第2期123-126,共4页
Journal of Dalian Polytechnic University
