摘要
采用甲苯和乙醇萃取,碱液、过氧化氢溶液浸泡提取的秸秆纤维素和用硅烷偶联剂KH560表面改性处理的尾矿粉,作为添加剂加入到环氧树脂(E-44)固化体系中,制备尾矿粉/秸秆纤维素/环氧树脂复合材料;并对复合材料的力学性能、热性能、结构与形态进行测试与表征。结果表明:纤维素的(—OH)结构已经部分参与到环氧树脂的固化反应中。复合材料的冲击强度、热稳定性随秸秆纤维素和尾矿粉的加入而增加,冲击强度最高的配方为纤维素质量分数为5%,尾矿粉质量分数为10%,冲击强度为1.096 kJ/m2;拉伸强度则随尾矿粉的加入而下降。SEM分析表明:秸秆纤维素及尾矿粉的存在使得断面呈现出韧窝结构,复合材料体系产生相界面效应。
In this paper, straw cellulose was abstracted by extracting with toluene and ethanol as solvent, and the coupling agent （ composites were composites were n dipping in alkali and hydrogen peroxide solution. Tailings powder was deal with by silane KH560） and was added into epoxy resin E-44. Tailings powder/straw fiber/epoxy resin prepared. The mechanical properties, thermal stability, structure and morphology of the investigated and characterized. FTIR results showed that the reaction of （-OH） of the cellulose occurred in the process of curing reaction of the epoxy resin. The impact strength and thermal stability of the composite increased with the addition of straw cellulose and tailings powder. The results indicated that when the mass fraction of cellulose was 5% of the straw cellulose, and tailings was 10%, impact strength was 1. 096 kJ/m^2, and the impact performance was the best. Tensile strength decreased with the addition of tailing powder. SEM showed that straw cellulose and tailings powder increased the phase interface effect of the composite and the cross section had the distribution of dimple type structure.
出处
《塑料工业》
CAS
CSCD
北大核心
2012年第10期84-87,120,共5页
China Plastics Industry
基金
河北省高等学校科学研究计划项目(Z2011289)
唐山市科学技术研究与发展指导计划项目(111302023b)
关键词
秸秆纤维
尾矿粉
环氧树脂
复合材料
性能
Straw Cellulose
Tailings Powder
Epoxy Resin
Composite Materials
Properties
