Effects of poplar wood fiber size on mechanical and creep properties of poplar wood fiber/high-density polyethylene composites prepared by hot-compression molding

被引：0

作者：

Xu H. ^{[1
,2
]}

Cao Y. ^{[1
,2
]}

Wang W. ^{[1
]}

Wang Q. ^{[1
]}

Wang H. ^{[1
]}

机构：

[1] Key Laboratory of Bio-based Material Science & Technology, Ministry of Education, Northeast Forestry University, Harbin

[2] Special and Key Laboratory of Guizhou Provincial Higher Education for Green Energy-Saving Materials, Guizhou Minzu University, Guiyang

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2016年 / 33卷 / 06期

关键词：

Composites; Creep; Fiber size; Hot-compression; Mechanical properties;

D O I：

10.13801/j.cnki.fhclxb.20160107.003

中图分类号：

学科分类号：

摘要：

Four kinds of poplar wood fibers (PWF, 125-180 μm, 180-425 μm, 425-850 μm and 850-2 000 μm)/high-density polyethylene (HDPE) composites were prepared by means of hot-compression molding. The flexural property test, impact property test, dynamic thermo-mechanical analysis(DMA), 24 h creep-24 h recovery test and 1 000 h long-term creep tests were performed for PWF/HDPE composites. The results show that the excessively large or small PWF size is not positively for improving the flexural property of PWF/HDPE composites. PWF/HDPE composites with fibers of 425-850 μm present the best enhancement effect. The flexural strength and the elastic modulus of 425-850 μm PWF/HDPE composites are 26.71 MPa and 2.73 GPa, respectively. Impact resistance property of PWF/HDPE composites keeps constant, while the PWF size increases from 180 μm to 2 000 μm. Whereas, 125-180 μm PWF/HDPE composites have the lowest impact resistance property. The PWF/HDPE composites with small fibers have the worst anti-creep performance, indicating that it is not suitable for long-term loading. 850-2 000 μm PWF/HDPE composites with long fibers have outstanding long-term anti-creep performance and recovery (78.46%), and its 1 000 h deformation is just 0.809 mm, which compares with the average values of 1 000 h deformation for other PWF/HDPE composites and decreases by 48.00%. © 2016, BUAA Culture Media Group Ltd. All right reserved.

引用

页码：1168 / 1173

页数：5

共 17 条

[1]

Wang Q.W., Wang W.H., Wood Olastic Composite Materials and Products, pp. 11-15, (2007)

[2]

Wang C.H., Li S.K., Effects of alkali treatment properties of bamboo fiber and bamboo fiber reinforced polypropylene composites, Acta Materiae Compositae Sinica, 32, 6, pp. 683-690, (2015)

[3]

Cao Y., Effect of fiber size and distribution on the mechanical properties of WPCs, (2013)

[4]

Wang W.H., Wang J.J., Huang H.B., Et al., Effects of wood fiber size on properties of wood fiber/HDPE composites after aging, Polymer Materials Science and Engineering, 30, 5, pp. 92-97, (2014)

[5]

Zaini M.J., Fuad M.Y.A., Ismail Z., Et al., The effect of filler content and size on the mechanical properties of polypropylene/oil palm wood flour composites, Polymer International, 40, 1, pp. 51-55, (1996)

[6]

Stark N.M., Berger M.J., Effect of processing method on surface and weathering characteristics of wood-flour/HDPE composites, Journal of Applied Polymer Science, 93, 3, pp. 1021-1030, (2004)

[7]

Sain M.M., Balatinecz J., Law S., Creep fatigue in engineered wood fiber and plastic compositions, Journal of Applied Polymer Science, 77, 2, pp. 260-268, (2000)

[8]

Joseph S., Sreekala M.S., Oommen Z., Et al., A comparisonof the mechanical properties of phenol formaldehyde composites reinforced with banana fibres and glass fibres, Composites Science and Technology, 62, 14, pp. 1857-1868, (2002)

[9]

Migneault S., Koubaa A., Erchiqui F., Et al., Effect of fiber length on processing and properties of extruded wood-fiber/HDPE composites, Journal of Applied Polymer Science, 110, 2, pp. 1085-1092, (2008)

[10]

Stark N.M., Rowlands R.E., Effects of wood fiber characteristics on mechanical properties of wood/polypropylene composites, Wood and Fiber Science, 35, 2, pp. 167-174, (2003)

← 1 2 →