The paper exploits the use of the Xanthoceras sorbifolia husk as the filler of the composite materials, optimizes the process of the composite preparation, and explores the trend of the mechanical properties changing with the filler content. The surfaces of the Xanthoceras sorbifolia husk fibers are treated with alkali, silane coupling agent and the alkali treatment, followed by that of the silane coupling agent. The Xanthoceras Sorbifolia Husk Fibers/ High Density Polyethylene composites are prepared via the twin screw extrusion and the injection molding. The influence of processing methods and fiber contents on the mechanical properties, such as the tensile strength, the elongation at break, the elastic modulus and the impact strength, of the composites are investigated. The tensile strength and the elongation at break are found to increase for the composites extruded twice. The tensile strength and the elongation at break are decreased, the elastic modulus is increased, and the impact strength is changed in a wavy form with the increasing fiber contents. The fiber fracture mechanism and the spall- off mechanism are observed coexisting on the fracture surface of the composites.
WANG Hongyu
,
SUI Guoxin
. Mechanical Properties of Xanthoceras Sorbifolia Husk Fibers/High Density Polyethylene Composites[J]. Science & Technology Review, 2014
, 32(9)
: 21
-25
.
DOI: 10.3981/j.issn.1000-7857.2014.09.002
[1] 许民, 陶红梅, 陈磊, 等. 偶联剂含量对植物纤维/高密度聚乙烯复合 材料力学性能的影响[J]. 东北林业大学学报, 2007, 35(10): 33-34. Xu Min, Tao Hongmei, Chen Lei, et al. Effect of coupling agent content on mechanical properties of plant fiber/HDPE composites[J]. Journal of Northeast Forestry University,. 2007, 35(10): 33-34.
[2] Ku H, Wang H, Pattarachaiyakoop N, et al. A review on the tensile properties of natural fiber reinforced polymer composites[J]. Composites Part B-Engineering, 2011, 42(4): 856-873.
[3] Akil H M, Omar M F, Mazuki A A M, et al. Kenaf fiber reinforced composites: A review[J]. Materials & Design, 2011, 32(8/9): 4107-4121.
[4] Mohanty A K, Wibowo A, Misra M, et al. Effect of process engineering on the performance of natural fiberreinforced cellulose acetate biocomposites[J]. Composites Part A: Applied Science and Manufacturing, 2004, 35: 363-370.
[5] Bledzkia A K, Letmana M, Viksneb A, et al. A comparison of compounding processes and wood typefor wood fibre: PP composites[J]. Composites Part A: Applied Science and Manufacturing, 2009, 40: 789-797.
[6] Bledzki A K, Jaszkiewicz A, Scherzer D. Mechanical properties of PLA composites with man- made cellulose and abaca fibres[J]. Composites Part A: Applied Science and Manufacturing, 2009, 40(4): 404-412.
[7] Sawpan M A, Pickering K L, Fernyhough A. Effect of various chemical treatments on the fibre structure and tensile properties of industrial hemp fibres[J]. Composites Part A: Applied Science and Manufacturing, 2011, 42(8): 888-895.
[8] Siaotong B A C, TabilLG, Panigrahi S A, et al. Extrusion compounding of flax-fiber-reinforced polyethylene composites: Effects of fiber content and extrusion parameters[J]. Journal of Natural Fibers, 2010, 7(4): 289-306.
