Thermal and mechanical properties of treated and untreated Red Balau (Shorea dipterocarpaceae)/LDPE composites
Thermal and mechanical properties of treated and untreated Red Balau (Shorea dipterocarpaceae)/LDPE composites
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处理和未处理的 Red Balau（龙脑香科）/LDPE 复合材料的热性能和机械性能
DOI：
10.1177/0731684411433913
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
J. Heidarian
中科院分区：
文献类型：
--
作者：
R. Lafia;A. Hassan;R. Yahya;N. A. Rahman;P. Hornsby;J. Heidarian
红巴劳锯末在180C和200C下热处理1 h，处理前后的木粉分别与质量分数为9%、20%和37%的低密度聚乙烯混合，在注塑机中成型。研究了复合材料的热性能和力学性能随填充量和处理温度的变化。热重分析表明，热处理木材及其复合材料的降解峰温度(Tp)有所提高。差示扫描量热仪(DSC)显示，当使用热处理木材作为填料时，基质的结晶度(XC)有下降的趋势。另一方面，未经处理的木材表现出随着木材含量的增加而增加的XC。拉伸模数随热处理和填料用量的增加而增大。此外，还发现弯曲强度和弹性模量随填充量的增加而增加。
Red Balau saw dust was heat-treated at 180°C and 200°C for 1 h. Treated and untreated wood flour were compounded with LDPE at 9%, 20%, and 37% by weight and molded in an injection molding machine. Thermal and mechanical properties of the resultant composites were investigated as a function of filler loadings and treatment temperature. Thermogravimetric analysis revealed an increase in degradation peak temperature (Tp) of the heat-treated wood and composites. DSC revealed a decreasing trend in the degree of crystallinity (Xc) of the matrix when heat-treated wood was used as filler. On the other hand, untreated wood showed an increase in Xc with increasing wood content. Tensile modulus increased with heat treatment and filler loading. Furthermore, flexural strength and modulus were found to increase with filler loading.