摘要
以木塑(木粉/聚丙烯)为支撑材料,聚乙二醇-4000(PEG-4000)为相变基元,通过木粉纤维孔洞物理吸附PEG-4000的储能作用,制备了聚乙二醇/木塑复合相变储能材料。通过力学性能、差示扫描量热(DSC)、热重分析(TGA)等研究了所制备材料的综合性能。研究表明:随着PEG-4000理论添加量的增加,复合材料相变焓先增加后减少,实验确定PEG-4000最佳理论添加量为20%(载药率为87.92%),此时复合材料相变焓为35.78J/g;PEG-4000的加入使复合材料拉伸强度提高了22.99%,弯曲强度提高了16.32%,热稳定性能明显增加,最大热分解温度提高了62.4℃。
Through energy storage effect of physical adsorbing PEG-4000 by fiber holes of wood flour,polyethylene glycol/wood-plastic composite phase change energy storage material was prepared with wood-plastic（wood flour/polypropylene）as support material,and PEG-4000 as the phase transformation unit.The mechanical properties were studied by tensile,flexural and impact strength testing.The phase transition enthalpy of material was studied by differential scanning calorimetry（DSC）.The thermal decomposition behavior of materials was also studied by thermogravity analysis（TGA）.The results revealed that increasing theory addition of PEG-4000 the phase change enthalpy of composite material increased and then decreased.While the best theoretical dosage of 20%（the drug loading capacity was 87.92%）,phase change enthalpy was 35.78J/g-1.The mechanical test showed that：adding PEG-4000,the tensile strength increased by 22.99%,the flexural strength increased by 16.32%,the thermal stability was obviously increased,so that the maximum thermal decomposition temperature increased 62.4℃.
出处
《化工新型材料》
CAS
CSCD
北大核心
2015年第11期74-76,共3页
New Chemical Materials
基金
新世纪优秀人才支持计划资助项目(NCET-13-0710)
关键词
木塑复合材料
聚乙二醇
相变性能
相变焓
wood-plastic composite materials
polyethylene glycol
phase change property
phase change enthalpy
