选用 PUR 木材层压胶,设计“刨光锯材-超高分子量聚乙烯(UHMWPE)纤维-单板”3层结构木质复合材,探索研究了 UHMWPE 纤维增强对木材抗弯性能、剪切性能以及单板厚度对其增强效果影响,并利用红外光谱(FT-IR)对脱粘纤维进行表征,进而对 UHMWPE 纤维增强机理进行了分析。结果表明, PUR 木材层压胶可用于 UHMWPE 纤维/木材的复合,UHMWPE纤维增强明显改变了木材破坏过程和破坏形貌,提高了木材的承载性能,同时 UHMWPE纤维增强效果与单板厚度密切相关。UHMWPE 纤维的加入降低了胶合界面的剪切性能。
In order to research whether ultra high molecular weight polyethylene (UHMWPE)fiber could be used in wood-based composite,three layer structure of wood composite materials from planed timber-UHM-WPE fiber-veneer was designed and prepared,PUR was selected as adhesive for this structure.The influences of UHMWPE fiber and veneer thickness composited with lumber on bending performance and ILSS of lumber were examined.The chemical constituents of deboning fibers were characterized by infrared spectroscopy (FT-IR).The mechanism of lumber heightened was discussed.The results showed that PUR could be used in UH-MWPE/lumber composite;UHMWPE fiber obviously changed the wood failure process and failure morpholo-gy,and improved the bearing capacity of wood;the effect reinforced by UHMWPE fiber was closely related to the thickness of veneer.Reinforced effect of UHMWPE fiber much affects the shear performance of bonding in-terface.
参考文献
| [1] | Brent ST .Durability and mode-I fracture of fiber-rein-forced plastic(FRP)/wood interface bond[D].Morgan-town:West Virginia University,1999. |
| [2] | N. Dourado;F.A.M. Pereira;M.F.S.F. de Moura;J.J.L. Morais .Repairing wood beams under bending using carbon-epoxy composites[J].Engineering structures,2012(Jan.):342-350. |
| [3] | Rongxian Ou;Hui Zhao;Shujuan Sui;Yongming Song;Qingwen Wang .Reinforcing effects of Kevlar fiber on the mechanical properties of wood-flour/high-density-polyethylene composites[J].Composites, Part A. Applied science and manufacturing,2010(9):1272-1278. |
| [4] | Aruna Z;Michael W;Soumen J et al.Treatment of functionalized graphitic nanofibers(GNFs)and the adhe-sion of GNFs-reinforced-epoxy with ultra high molecular weighttpolyethylene fiber[J].Composites Part A:Ap-plied Science and Manufacturing,2007,38(03):699-709. |
| [5] | Kusanoa Y;Teodorua S;Hansen CM .The physical and chemical properties of plasma treated ultra-high-molecu-lar-weighttpolyethylene fibers[J].Surface and Coatings Technology,2011,205(8-9):2793-2798. |
| [6] | Valenza A;Visco AM;Torrisi L et al.Characterization of ultra-high-molecular-weighttpolyethylene(UHM-WPE)modified by ion implantation[J].POLYMER,2004,45(05):1707-1715. |
| [7] | Enomoto I;Katsumurab Y;Sekiguchi M et al.The role of hydro peroxides as a precursor in the radiation-induced graft polymerization of methyl methacrylate to ultra-high molecular weighttpolyethylene[J].Radiation Physics and Chemistry,2010,79(06):718-724. |
| [8] | Zhi Li;Wei Zhang;Xinwei Wang;Yongyi Mai;Yumei Zhang .Surface modification of ultra high molecular weight polyethylene fibers via the sequential photoinduced graft polymerization[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2011(17):7600-7608. |
| [9] | Karbhari VM.;Herzberg I.;Falzon PJ. .ENERGY ABSORPTION CHARACTERISTICS OF HYBRID BRAIDED COMPOSITE TUBES[J].Journal of Composite Materials,1997(12):1164-1186. |
| [10] | Y.Li;X.J.Xian .Compressive and flexural behavior of ultra-high-modulus polyethylene fiber and carbon fiber hybrid composites[J].Composites science and technology,1999(1):13-18. |
| [11] | Tissington B;Pollard G;Ward IM .A study of the in-fluence of fiber/resinadhesion on the mechanical behavior of ultra-high-modulus Polyethylene fiber composites[J].Journal of Materials Science,1991,26:82-92. |
| [12] | Park SJ;Jin JS .Energetic studies on epoxy-polyure-thane interpenetrating polymer networks[J].J Appl Polyp Sic,2001,82(03):775-780. |
| [13] | Susanti CME;Nakao T;Yoshihara H .Examination of the failure behavior of wood with a short crack in the tangential-radial system by single-edge-notched bending test[J].Engineering Fracture Mechanics,2011,78(16):2775-2788. |
| [14] | 蔡军锋,易建政,续新宇,谢长洪.UHMWPE纤维增强聚氨酯泡沫对爆炸冲击波衰减性能的影响[J].高分子材料科学与工程,2009(04):119-122. |
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