Study of Vinyltrimethoxysilane modified wood flour/HDPE composites
Wood plastic composites (WPC) are a new type of green environmental composites with high performance and added value. In this paper,poplar wood flour was modified with vinyltrimethoxysilane(A171) to improve the interfacial compatibility and enhance the interfacial bonding between the polar wood flour and nonpolar plastics. Then the modified wood flour was blended with high density polyethylene (HDPE) and prepared composites by extrusion. The effects of amount and solution concentration of A-171 on the properties of WPC were investigated. FTIR analysis indicated that polycondensation grafting reaction occurred between A-171 and wood flour. Compared to untreated wood flour/HDPE composites,both mechanical properties and water resistance of the composites were improved and presented optimal performance when the dosage of A-171 was 4%. The storage modulus G and viscosity T)*of the composites decreased but the loss tangent tan8 increased compared to the untreated composites. G and n,* raised with the increase of A-171,however,tan8 decreased. Solution concentration of A-171 did not show significant effect on the mechanical properties of composites,but water resistance of composites decreased with the increase of solution concentrateon of A-171.
Chuntao LI Weihong WANG Qingwen WANG Yanjun Xie Yongming SONG Haigang WANG
Key Laboratory of Bio-Based Material Science & Technology of Ministry of Education,Northeast Forestry University,Harbin,China
国际会议
哈尔滨
英文
2148-2153
2011-03-26（万方平台首次上网日期，不代表论文的发表时间）