基于单板的木塑复合板材制备及包装应用性能研究

Preparation and Packaging Application Properties of Wood-plastic Composite Sheet Based on Veneer

中文关键词: 木塑托盘  木塑复合板材  物理力学性能  仿真分析

英文关键词: wood-plastic pallet  wood-plastic composite sheet  physical and mechanical properties  simulation analysis

中文摘要:

      目的 研究塑料代替传统胶黏剂制得木塑复合材料的性能，及其在包装领域的应用特性。方法 以桉木单板为原料，采用热压成形的方式，利用单因素分析热压温度和塑料种类对板材性能的影响，通过Ansys Workbench软件建立包装托盘的有限元模型，并分析其在静态弯曲条件下包装托盘的受力情况和承载特性。结果 木塑复合板材的优化热压温度为180 ℃，此温度下所制得板材可满足II类胶合板的要求。9层复合板材制备的木塑托盘受到静载时托盘的上连板与中面板接触点的影响，左右两侧部位为破坏点，最大应力发生在上连板与中面板的接触位置。结论 HDPE和PVC等2种塑料薄膜代替传统胶黏剂所制备的板材符合国家标准，可应用于包装托盘的原材料。

英文摘要:

      The work aims to study the properties of wood-plastic composites made of plastics instead of traditional adhesives and their application characteristics in the field of packaging. The eucalyptus veneer was used as raw material and hot pressed. The influence of hot pressing temperature and plastic type on the sheet properties was analyzed by single factor experiment. The finite element model of the packaging pallet was established by Ansys Workbench software. The force and bearing characteristics of the packaging pallet under static bending conditions were analyzed. The optimized hot pressing temperature of the wood-plastic composite sheet was 180 ℃. The sheet made at this temperature could meet the requirements of class II plywood. The wood-plastic pallet prepared by the 9-layer composite sheet was affected by the contact point between the upper connecting plate and the middle panel of the pallet under static load. The left and right sides were broken points, and the maximum stress occurred at the contact position between the upper connecting plate and the middle panel. The sheets prepared by HDPE and PVC films instead of traditional adhesives meet the national standards, and they can be used as raw materials for packaging pallets.