研究了苯甲酸（BA）、硬脂酸（SA）、甲苯-2,4-二异氰酸酯（TDI）对聚丙烯/木粉复合材料的改性效果。结果表明,木粉经改性剂处理后,表面极性减弱,与聚丙烯的界面张力降低,相容性提高;所有改性剂均可提高复合材料的拉伸强度、冲击强度以及熔体流动性能,但对弯曲强度影响不大。用TDI/SA复合处理木粉,复合材料的综合性能最好。扫描电镜（SEM）分析表明,木粉经过处理后,木粉与聚丙烯间界面较模糊。
The effects of different modifiers such as benzoic acid(BA),stearic acid(SA) and toluene-2,4-diisocyanate(TDI) on the properties of polypropylene/wood flour composite were studied.The results show that the surface polarity of the wood flour and interfacial tension between wood flour and polypropylene are decreased but the compatibility is improved after wood flour being treated by these modifiers.The measurements of mechanical properties and melt flow rate of the modified composites also show that all of these modifiers can improve tensile strength,impact strength and melt flow rate of the composites,but have little effect on the flexural strength.In general,the comprehensive properties of the composites reach the best value after wood flour being treated sequentially by TDI and SA.SEM photos show the interface between wood flour and polypropylene gets blurred after wood flour being treated in the cross sectional morphologies of composites.
参考文献
| [1] | Marcia Fornasieri;Juliana Weiller Alves;Edvani Curti Muniz .Synthesis and characterization of polyurethane composites of wood waste and polyols from chemically recycled pet[J].Composites, Part A. Applied science and manufacturing,2011(2):189-195. |
| [2] | Lei, Y;Wu, QW .Wood plastic composites based on microfibrillar blends of high density polyethylene/poly(ethylene terephthalate)[J].Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies,2010(10):3665-3671. |
| [3] | Matuana, L.M.;Jin, S.;Stark, N.M. .Ultraviolet weathering of HDPE/wood-flour composites coextruded with a clear HDPE cap layer[J].Polymer Degradation and Stability,2011(1):97-106. |
| [4] | 朱德钦,生瑜,刘希荣.P（MAA-co-BA）对PVC-木粉复合材料性能的影响[J].北京林业大学学报,2010(01):97-102. |
| [5] | Yang Liu;Yan Tao;Xinying Lv;Yanhua Zhang;Mingwei Di .Study on the surface properties of wood/polyethylene composites treated under plasma[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2010(3):1112-1118. |
| [6] | Yu-Tao Zheng;De-Rong Cao;Dong-Shan Wang .Study on the interface modification of bagasse fibre and the mechanical properties of its composite with PVC[J].Composites, Part A. Applied science and manufacturing,2007(1):20-25. |
| [7] | Qiao XY.;Zhang Y.;Zhang YX.;Zhu YT. .Ink-eliminated waste paper sludge flour-filled polypropylene composites with different coupling agent treatments[J].Journal of Applied Polymer Science,2003(2):513-520. |
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