Mesoporous Aluminosilicate Material with Hierarchical Porosity for Ultralow Density Wood Fiber Composite (ULD_WFC)
Mesoporous Aluminosilicate Material with Hierarchical Porosity for Ultralow Density Wood Fiber Composite (ULD_WFC)
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DOI：
10.1021/acssuschemeng.6b00691
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发表时间：
2016-07-01
影响因子：
8.4
通讯作者：
Lin, Ming
中科院分区：
文献类型：
--
作者：
Chen, Tingjie;Xie, Yongqun;Lin, Ming
研究了将具有分级孔隙结构的介孔硅铝酸盐材料应用于超低密度木纤维复合材料（ULD_WFC）以改善其力学性能。将300 nm厚的Si-Al无机膜施加到纤维的表面。得到了具有许多介孔的介孔硅铝酸盐材料，介孔范围为2 - 20 nm。它们的总孔体积和Brunauer-Emmett-Teller表面积分别为0.193 cm（3）/g和355.2 m（2）/g。热重分析表明，Si-Al化合物对ULD_WFC的热稳定性有影响。但添加Si-Al化合物的ULD_WFC比未添加Si-Al化合物的ULD_WFC的残余重量增加了23.8796。X射线衍射分析表明SiO2部分转化为α-SiC。这些条件有助于提高ULD_WFC的力学性能。与未涂覆的ULD_WFC相比，添加Si-Al化合物的复合材料的弹性模量、断裂模量和内结合强度分别提高了547.4%、240.0%和400.0%。
This study investigates the application of mesoporous aluminosilicate material with hierarchical porosity to ultralow density wood fiber composite (ULD_WFC) for improving their mechanical properties. A 300 nm thickness Si-Al inorganic film was applied to the surface of the fibers. The mesoporous aluminosilicate material with many mesopores ranging from 2 to 20 nm was obtained. Their total pore volume and Brunauer-Emmett-Teller surface area were 0.193 cm(3)/g and 355.2 m(2)/g, respectively. Thermogravimetric analysis indicated that the thermostability of ULD_WFCs was affected by Si-Al compounds. But the residual weight of ULD_WFC with Si-Al compounds was 23.8796 greater than composite without Si-Al compounds. The X-ray diffraction analysis indicated partial conversion of SiO2 to alpha-SiC. These conditions attributed to improving the mechanical properties of ULD_WFC. The modulus of elasticity, modulus of rupture, and internal bond strength of composite with Si-Al compounds increased by 547.4%, 240.0%, and 400.0%, respectively, as compared with uncoated ULD_WFC.