竹塑复合材料结构设计及性能研究
发布时间：2018-10-04 20:55
【摘要】：竹塑复合材料作为一种性能优异的新型环保材料,在建筑、包装、汽车工业等领域得到广泛应用。本论文以竹塑复合材料的配方、截面结构设计与优化以及芯-壳结构竹塑复合材料设计为主要研究对象,以探索竹塑复合材料制品的截面结构设计优化方法及其与使用性能的关系为目标,构建了竹塑复合材料制品承载力学分析模型,并通过理论计算、有限元模拟和实验验证相结合的方法,系统地研究了截面芯孔的形状、数量、尺寸、壳层结构等因素对竹塑复合材料整体承载能力和抗变形能力的影响,形成了具有芯-壳结构的竹塑复合材料的结构设计与性能控制的新方法,并能定量指导相关制品的结构设计。主要研究工作如下：1.分析了竹粉的粒径、含量及界面改性剂对竹粉/HDPE复合材料力学性能和微观结构的影响,确定了综合性能较优异的竹粉/HDPE复合材料配方,量化了竹粉/HDPE复合材料的基本力学设计参数。2.运用材料力学的相关理论分析,构建了竹塑复合材料截面形状结构的承载力学理论计算模型,并通过有限元模拟和理论计算相结合的方法,详细研究了截面芯孔的形状、数量和尺寸对材料整体承载能力和抗变形能力的影响关系,并通过实验研究,验证了地板截面结构的优化设计方法,得到了综合性能较优的竹塑复合材料芯层截面结构形状。3.在综合性能较优的竹塑复合材料配方和截面形状结构的前提下,通过壳层材料的设计,有限元模拟分析研究了芯-壳结构对竹塑复合材料整体承载能力和弯曲强度的影响,并分别选取HDPE、纤维增强HDPE和纳米增强HDPE三种不同的壳层材料,成功制备了具有芯-壳结构的竹塑复合材料制品试样,分析了壳层材料对芯-壳竹塑复合材料弯曲强度和承载能力的影响,验证并确定了最佳的壳层材料配方和结构。以上研究成果丰富和完善了竹塑复合材料结构设计的理论和内容,加深了对竹塑复合材料制品的截面结构设计与使用性能关系的认识。不仅可以为竹塑复合材料结构设计的优化提供详实的实验数据及理论依据,还可以对结构型芯-壳竹塑复合材料的工业化生产提供技术指导,具有较大的理论与现实意义。
[Abstract]:As a new kind of environmental protection material with excellent performance, bamboo plastic composite has been widely used in construction, packaging, automobile industry and so on. In this paper, the formulation, cross-section structure design and optimization of bamboo plastic composite and the design of core shell structure bamboo plastic composite are the main research objects. In order to explore the optimization method of cross-section structure design of bamboo and plastic composite products and its relationship with the performance, a model for the analysis of bearing capacity of bamboo and plastic composite products was established, and the theoretical calculation was carried out. By combining finite element simulation with experimental verification, the effects of the shape, quantity, size and shell structure of the cross-section core holes on the overall bearing capacity and deformation resistance of the bamboo-plastic composite are systematically studied. A new method of structure design and property control of bamboo plastic composite with core-shell structure is formed, and it can guide the structure design of related products quantitatively. The main research work is as follows: 1. The effects of the particle size, content and interfacial modifier of bamboo powder on the mechanical properties and microstructure of bamboo powder / HDPE composite were analyzed, and the formula of bamboo powder / HDPE composite with excellent comprehensive properties was determined. The basic mechanical design parameters of bamboo powder / HDPE composite were quantified. Based on the theoretical analysis of material mechanics, the theoretical calculation model of bearing capacity of section shape structure of bamboo plastic composite is established, and the shape of section core hole is studied in detail by combining finite element simulation and theoretical calculation. The effect of quantity and size on the overall bearing capacity and deformation resistance of the material was studied. The optimum design method of floor cross-section structure was verified by experimental research. The shape of core layer cross-section structure of bamboo plastic composite with better comprehensive performance was obtained. On the premise of the formulation and section shape structure of bamboo plastic composite with better comprehensive properties, the influence of core-shell structure on the overall bearing capacity and bending strength of bamboo plastic composite was studied by the design of shell material and finite element simulation. Three different shell materials, HDPE, fiber reinforced HDPE and nano-reinforced HDPE, were used to prepare bamboo / plastic composites with core-shell structure. The influence of shell material on the bending strength and bearing capacity of core-shell bamboo plastic composite was analyzed. The optimum formula and structure of shell material were verified and determined. The above research results enrich and perfect the theory and content of the structural design of bamboo plastic composite materials, and deepen the understanding of the relationship between the cross-section structure design of bamboo and plastic composite products and their performance. It can not only provide detailed experimental data and theoretical basis for structural design optimization of bamboo-plastic composites, but also provide technical guidance for industrial production of structural core-shell bamboo-plastic composites, which is of great theoretical and practical significance.
【学位授予单位】：北京化工大学
【学位级别】：博士
【学位授予年份】：2015
【分类号】：TB332
本文编号：2251847
[Abstract]:As a new kind of environmental protection material with excellent performance, bamboo plastic composite has been widely used in construction, packaging, automobile industry and so on. In this paper, the formulation, cross-section structure design and optimization of bamboo plastic composite and the design of core shell structure bamboo plastic composite are the main research objects. In order to explore the optimization method of cross-section structure design of bamboo and plastic composite products and its relationship with the performance, a model for the analysis of bearing capacity of bamboo and plastic composite products was established, and the theoretical calculation was carried out. By combining finite element simulation with experimental verification, the effects of the shape, quantity, size and shell structure of the cross-section core holes on the overall bearing capacity and deformation resistance of the bamboo-plastic composite are systematically studied. A new method of structure design and property control of bamboo plastic composite with core-shell structure is formed, and it can guide the structure design of related products quantitatively. The main research work is as follows: 1. The effects of the particle size, content and interfacial modifier of bamboo powder on the mechanical properties and microstructure of bamboo powder / HDPE composite were analyzed, and the formula of bamboo powder / HDPE composite with excellent comprehensive properties was determined. The basic mechanical design parameters of bamboo powder / HDPE composite were quantified. Based on the theoretical analysis of material mechanics, the theoretical calculation model of bearing capacity of section shape structure of bamboo plastic composite is established, and the shape of section core hole is studied in detail by combining finite element simulation and theoretical calculation. The effect of quantity and size on the overall bearing capacity and deformation resistance of the material was studied. The optimum design method of floor cross-section structure was verified by experimental research. The shape of core layer cross-section structure of bamboo plastic composite with better comprehensive performance was obtained. On the premise of the formulation and section shape structure of bamboo plastic composite with better comprehensive properties, the influence of core-shell structure on the overall bearing capacity and bending strength of bamboo plastic composite was studied by the design of shell material and finite element simulation. Three different shell materials, HDPE, fiber reinforced HDPE and nano-reinforced HDPE, were used to prepare bamboo / plastic composites with core-shell structure. The influence of shell material on the bending strength and bearing capacity of core-shell bamboo plastic composite was analyzed. The optimum formula and structure of shell material were verified and determined. The above research results enrich and perfect the theory and content of the structural design of bamboo plastic composite materials, and deepen the understanding of the relationship between the cross-section structure design of bamboo and plastic composite products and their performance. It can not only provide detailed experimental data and theoretical basis for structural design optimization of bamboo-plastic composites, but also provide technical guidance for industrial production of structural core-shell bamboo-plastic composites, which is of great theoretical and practical significance.
【学位授予单位】：北京化工大学
【学位级别】：博士
【学位授予年份】：2015
【分类号】：TB332
【参考文献】
相关期刊论文 前10条
1 谢慈航;薛璞;;含孔复合材料层合板的孔边应力分析及孔形优化[J];陕西师范大学学报(自然科学版);2014年04期
2 赵方;程海涛;张双保;;竹塑复合材料的制备工艺及其性能研究[J];林产工业;2013年05期
3 汤颖;沈钰程;吴亚刚;李君彪;李延军;庞小仁;;竹塑复合材料研究现状及展望[J];林业机械与木工设备;2013年08期
4 梁珊;李杨;吴建军;刘智峰;罗筑;于杰;;竹纤维/玻璃纤维混杂增强聚丙烯复合材料[J];塑料;2012年05期
5 李明;马力;吴林志;关正西;;含孔复合材料层合板拉伸强度研究[J];哈尔滨工业大学学报;2011年S1期
6 沈凡成;贾润礼;;木塑复合材料的研究进展与发展前景[J];塑料助剂;2010年01期
7 戚宁;柳和生;黄兴元;;聚合物共挤出技术及其应用[J];工程塑料应用;2009年04期
8 石恒冲;李斌;;木塑复合材料界面相容剂的研究进展[J];化学与粘合;2007年01期
9 越二寅;;改善木塑复合材料性能的方法讨论[J];甘肃林业职业技术学院学报;2006年01期
10 赵永生;朱复华;薛平;刘素梅;蒋洋;;木粉对PVC木塑复合材料力学性能影响[J];现代塑料加工应用;2005年06期
，本文编号：2251847
本文链接：https://www.wllwen.com/kejilunwen/cailiaohuaxuelunwen/2251847.html
