|Table of Contents|

Design and Performance Test of the Wood-plastic Composite Coupled With Steel Skeleton in Greenhouse

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年06
Page:
55-62
Research Field:
Publishing date:

Info

Title:
Design and Performance Test of the Wood-plastic Composite Coupled With Steel Skeleton in Greenhouse
Author(s):
NI Xinyu; BAO Encai; ZOU Zhirong; ZHANG Yong
(College of Horticulture,Northwest A&F University,Key Laboratory of Protected Horticultural Engineering in Northwest of Ministry of Agriculture and Rural Affairs,Yangling,Shaanxi 712100)
Keywords:
WPC; steel; WPC-S; bending performance; greenhouse; load
PACS:
-
DOI:
10.11937/bfyy.20192635
Abstract:
Wood plastic composite is a new type of material with rapid development in recent years,which has the characteristics of easy processing,high density and strong hardness.In order to explore the application of wood plastic in greenhouse building,a composite skeleton of wood plastic and steel suitable for greenhouse was designed,and its mechanical properties were tested.In this experiment,wood plastic and steel were used as test materials.The tensile strength and compressive strength of wood plastic and steel were studied by means of tensile,compression,artificial climate aging and the application of composite framework in greenhouse,in order to develop a new material which was comparable to steel framework in performance and price.It was concluded that the tensile strength were 28.391,24.954,15.000 MPa and the compressive strength was 63.633,42.438,32.547 MPa respectively at low temperature,room temperature and high temperature.The bending strength of WPC after 250 hours artificial climate aging was 37.040 MPa,which was 22.083% lower than that without aging treatment.The composite skeleton was made of wood plastic and steel.Compared with the common wood plastic skeleton,the test at room temperature showed that the bending resistance of the composite skeleton was significantly higher than that of the common wood plastic skeleton,and its ductility was about three times higher.The bending resistance of the composite skeleton with steel added to the lower edge was significantly better than that of the composite skeleton with steel added to the upper edge; the maximum resistance of the composite skeleton with circlip groove.The bending yield strength was 19.112 kN,which was 88.74% higher than that of the composite skeleton with steel at the lower edge,which met the requirement of the bearing capacity of the greenhouse skeleton.According to the load test of the greenhouse with a composite framework with a clamp groove,the results showed that when the framework spacing was 1.2 m,the load of the greenhouse was 0.436 kN·(m2)-1,and when the framework spacing was 1.0 m,the load was 0.527 kN·m-2.Compared with the traditional steel skeleton greenhouse,the construction cost of the composite skeleton greenhouse was reduced by 10.4 RMB·m-2.The results showed that the composite skeleton could give full play to the advantages of wood plastic,such as environmental protection,low price,plasticity and excellent mechanical properties of steel,which provided a useful reference for the light simplification and assembly of greenhouse buildings.

References:

[1]张兆好,齐英杰.木塑复合材料的应用与发展[J].木材加工机械,2009,20(S1)：74-77,38.[2]WECHSLER A,HIZIROGLU S.Some of the properties of wood-plastic composites[J].Building and Environment,2007,42(7)：2637-2644.[3]唐伟家,李茂彦,吴汾.世界塑木复合材料市场动向和开发建议[J].中外能源,2007,12(6)：15-19.[4]QIANG T,YU D,ZHANG A,et al.Life cycle assessment on polylactide-based wood plastic composites toughened with polyhydroxyalkanoates[J].Journal of Cleaner Production,2014,66：139-145.[5]MARKARIAN J.Additive developments aid growth in wood-plastic composites[J].Plastics,Additives and Compounding,2002,4(11)：18-21.[6]SAPUTRA H,SIMOSEN J,LI K.Effect of extractives on the flexural properties of wood/plastic composites[J].Composite Interfaces,2004,11(7)：515-524.[7]KIM J W,HARPER D P,TAYLOR A M.Effect of wood species on water sorption and durability of wood-plastic composites[J].Wood and fiber science,2008,40(4)：519-531.[8]LEI Y,WU Q.High density polyethylene and poly (ethylene terephthalate) in situ sub-micro-fibril blends as a matrix for wood plastic composites[J].Composites Part A：Applied Science and Manufacturing,2012,43(1)：73-78.[9]SOUCY J,KOUBAA A,MIGNEAULT S,et al.The potential of paper mill sludge for wood-plastic composites[J].Industrial Crops and Products,2014,54：248-256.[10]KAZEMI Y,CLOUTIER A,RODRIGUE D.Mechanical and morphological properties of wood plastic composites based on municipal plastic waste[J].Polymer Composites,2013,34(4)：487-493.[11]MIGNEAULT S,KOUBAA A,PERR P,et al.Effects of wood fiber surface chemistry on strength of wood-plastic composites[J].Applied Surface Science,2015,343：11-18.[12]LI X,LEI B,LIN Z,et al.The utilization of bamboo charcoal enhances wood plastic composites with excellent mechanical and thermal properties[J].Materials & Design,2014,53：419-424.[13]MARTINS G,ANTUNES F,MATEUS A,et al.Optimization of a wood plastic composite to produce a new dynamic shading system[M].Natural Fibres：Advances in Science and Technology Towards Industrial Applications.Springer Netherlands,2016：343-350.[14]蔡红珍,柏雪源,高巧春,等.稻壳及硅烷添加量对木塑复合材料力学性能的影响[J].农业工程学报,2007,23(11)：176-179.[15]赵剑英,区颖刚,蔡红珍,等.丙烯酸酯木塑复合材料增容剂的性能及应用[J].农业工程学报,2010,26(14)：421-424.[16]何春霞,侯人鸾,薛娇,等.不同模压成型条件下聚丙烯木塑复合材料性能[J].农业工程学报,2012,28(15)：145-150.[17]于旻,何春霞,刘军军,等.不同表面处理麦秸秆对木塑复合材料性能的影响[J].农业工程学报,2012,28(9)：171-177.[18]岳孔,程秀才,夏蛟,等.木塑层合板的制备工艺及抗弯性能[J].农业工程学报,2015,31(22)：301-307.[19]周长吉.温室工程设计手册[M].北京：中国农业出版社,2007.[20]关苏军,万春风,汪丽娜,等.玄武岩纤维增强木塑复合材料的力学性能[J].复合材料学报,2011,28(5)：162-167.[21]张东辉,何春霞,刘军军.稻秸秆粉/聚丙烯复合材料力学性能[J].农业工程学报,2010,26(7)：380-384.[22]AHORI A.Wood-plastic composites as promising green-composites for automotive industries[J].Bioresource Technology,2008,99(11)：4661-4667.[23]BOUAFIF H,KOUBAA A,PERR P,et al.Effects of fiber characteristics on the physical and mechanical properties of wood plastic composites[J].Composites Part A：Applied Science and Manufacturing,2009,40(12)：1975-1981.[24]张勇,邹志荣,李盟.用于日光温室的合成木和钢材复合骨架结构[P].中国专利：203120580,2013-08-14.[25]张勇,邹志荣.一种日光温室的卡簧卡槽钢带塑木复合材料[P].中国专利：104031333,2014-09-10.[26]LY/T 1613-2004,挤压木塑复合材[S].北京：中国标准出版社，2004.[27]GB/T228.1-2010,金属材料拉伸试验第1部分：室温试验方法[S].北京：中国标准出版社，2010.[28]GB/T 29365-2012,塑木复合材料人工气候老化试验方法[S].北京：中国标准出版社，2012.[29]GB50009-2012,建筑结构荷载规范[S].北京：中国建筑工业出版社，2012.[30]GB/T 18622-2002,温室结构设计荷载[S].北京：中国标准出版社，2002.[31]李化杰.环境治理重压下河北省银行业信贷政策思考：以河北省钢铁行业为例[J].河北金融,2014(3)：29-31.[32]王萍.雾霾限产来袭钢材“价高和寡”[N].现代物流报,2017-09-11(5).

Memo

Memo:
-
Last Update: 2020-05-24