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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Mesoporous Aluminosilicate Material with Hierarchical Porosity for Ultralow Density Wood Fiber Composite (ULD_WFC)
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Mesoporous Aluminosilicate Material with Hierarchical Porosity for Ultralow Density Wood Fiber Composite (ULD_WFC)

机译：具有超低密度木纤维复合材料（ULD_WFC）的多层孔隙介孔铝硅酸盐材料

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摘要

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 cm3/g and 355.2 m2/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 23.87% greater than composite without Si-Al compounds. The X-ray diffraction analysis indicated partial conversion of SiO2 to α-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.
机译：本研究研究了具有分级孔隙率的中孔铝硅酸盐材料在超低密度木纤维复合材料（ULD_WFC）中的应用，以改善其机械性能。将300nm厚的Si-Al无机膜施加到纤维的表面。获得具有2至20nm范围的许多中孔的中孔铝硅酸盐材料。它们的总孔体积和Brunauer-Emmett-Teller表面积分别为0.193 cm3 / g和355.2 m2 / g。热重分析表明，ULD_WFC的热稳定性受Si-Al化合物的影响。但是，含Si-Al化合物的ULD_WFC的残余重量比不含Si-Al化合物的复合材料大23.87％。 X射线衍射分析表明SiO2部分转化为α-SiC。这些条件归因于改善ULD_WFC的机械性能。与未涂覆的ULD_WFC相比，含Si-Al化合物的复合材料的弹性模量，断裂模量和内部粘结强度分别增加了547.4％，240.0％和400.0％。

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