For this study, an intercalation compounding method was used to prepare Chinese fir wood/Ca-montmorillonite （Ca-MMT） composite board to improve its properties such as surface mechanical properties, flame retardance ...For this study, an intercalation compounding method was used to prepare Chinese fir wood/Ca-montmorillonite （Ca-MMT） composite board to improve its properties such as surface mechanical properties, flame retardance and dimensional stability. By virtue of water-soluble phenolic resin （PF）, Chinese fir wood and Ca-MMT were mixed by pressure and vacuum impregnation. The optimum impregnation technology of Chinese fir wood/Ca-MMT composite board was obtained by using an orthogonal design and a single factor design of pressure and vacuum impregnation, using weight percent gain （WPG） as the basic index. The results are as follows： 1） On the basis of the orthogonal design and an actual experiment, the optimum preparation technology of Chinese fir wood/Ca-MMT composite board is 20% PF resin dispersion concentration （wt%）, 1.0 CEC amount of organic intercalation agent, 0.098 MPa vacuum degree, 5% concentration of Ca-MMT and 1.0 MPa pressure. 2） The WPG of the composite board samples of 450 mm length was much larger than that of the samples of 600, 750 and 900 mm length. Warm water extraction contributed little to WPG展开更多
分别采用纳米蒙脱土(nano-MMT)、纳米碳酸钙(nano-CaCO_3)、纳米二氧化硅(nano-Si O_2)对高密度聚乙烯/反式-1,4-聚异戊二烯(HDPE/TPI)合金材料进行增强改性,考察了这3种纳米颗粒对HDPE/TPI合金力学性能及耐热性能的影响。结果表明:当H...分别采用纳米蒙脱土(nano-MMT)、纳米碳酸钙(nano-CaCO_3)、纳米二氧化硅(nano-Si O_2)对高密度聚乙烯/反式-1,4-聚异戊二烯(HDPE/TPI)合金材料进行增强改性,考察了这3种纳米颗粒对HDPE/TPI合金力学性能及耐热性能的影响。结果表明:当HDPE与TPI的质量比为95/5时,HDPE/TPI合金具有良好的韧性,其冲击强度由纯HDPE的32.5 k J/m^2提高至51.1 k J/m^2。在此基础上,添加3%~5%的纳米颗粒能够较明显地改善该合金材料的力学性能和耐热性能;3种纳米颗粒中,nano-MMT和nano-CaCO_3的增强效果相对较好。展开更多
基金the National Natural Science Foundation of China (Grant No.30271055)
文摘For this study, an intercalation compounding method was used to prepare Chinese fir wood/Ca-montmorillonite （Ca-MMT） composite board to improve its properties such as surface mechanical properties, flame retardance and dimensional stability. By virtue of water-soluble phenolic resin （PF）, Chinese fir wood and Ca-MMT were mixed by pressure and vacuum impregnation. The optimum impregnation technology of Chinese fir wood/Ca-MMT composite board was obtained by using an orthogonal design and a single factor design of pressure and vacuum impregnation, using weight percent gain （WPG） as the basic index. The results are as follows： 1） On the basis of the orthogonal design and an actual experiment, the optimum preparation technology of Chinese fir wood/Ca-MMT composite board is 20% PF resin dispersion concentration （wt%）, 1.0 CEC amount of organic intercalation agent, 0.098 MPa vacuum degree, 5% concentration of Ca-MMT and 1.0 MPa pressure. 2） The WPG of the composite board samples of 450 mm length was much larger than that of the samples of 600, 750 and 900 mm length. Warm water extraction contributed little to WPG
文摘分别采用纳米蒙脱土(nano-MMT)、纳米碳酸钙(nano-CaCO_3)、纳米二氧化硅(nano-Si O_2)对高密度聚乙烯/反式-1,4-聚异戊二烯(HDPE/TPI)合金材料进行增强改性,考察了这3种纳米颗粒对HDPE/TPI合金力学性能及耐热性能的影响。结果表明:当HDPE与TPI的质量比为95/5时,HDPE/TPI合金具有良好的韧性,其冲击强度由纯HDPE的32.5 k J/m^2提高至51.1 k J/m^2。在此基础上,添加3%~5%的纳米颗粒能够较明显地改善该合金材料的力学性能和耐热性能;3种纳米颗粒中,nano-MMT和nano-CaCO_3的增强效果相对较好。
