预冲孔结构对聚丙烯双向土工格栅拉伸成型的影响  

Infl uence of Pre-pierced Structure on Tensile Process of Polypropylene Biaxial Geogrids

作　　者：郑超[1] 刘杰[1] 袁洪波 宋立彬[1] 栾贻国[1] Zheng Chao;Liu Jie;Yuan Hongbo;Song Libin;Luan Yiguo(School of Materials Science and Engineering,Shandong University,Shandong,250061;Feicheng Lianyi Engineering Plastics Co.,Ltd.,Shandong,271608)

机构地区：[1]山东大学材料科学与工程学院,山东250061 [2]肥城联谊工程塑料有限公司,山东271608

出　　处：《当代化工研究》2022年第15期28-30,共3页Modern Chemical Research

基　　金：山东省自然科学基金“超细晶材料软模辅助激光冲击微成形及增塑机理研究”(项目编号:ZR2020ME149);山东大学实验室建设与管理研究重大项目“面向‘工艺-结构-性能’全流程的材料科学与工程分析测试开放共享培训平台建设”(项目编号:sy20201301);山东大学教育教学改革研究项目“融合新工科与大思政理念的材料成型及控制工程专业实验教学体系改革研究与实践”(项目编号:2021Y290)。

摘　　要：针对聚丙烯双向土工格栅开展了不同预冲孔间距和孔径条件下的拉伸成型工艺实验,并检测了格栅纵向和横向的力学性能。结果表明,双向土工格栅纵向的力学性能优于横向。合适的预冲孔间距和孔径对于获得合格格栅产品至关重要。在拉伸距离一定时,增大预冲孔间距或减小孔径,均使双向土工格栅两个方向的拉伸强度提高。The tensile process under various pre-pierced spaces and diameters was performed for polypropylene biaxial geogrids.The me-chanical properties of geogrids along both longitudinal and transverse directions were measured.It is revealed that the mechanical properties along longitudinal direction are better than those along transverse direction.It is important to select a reasonable group of pre-pierced space and diameter to obtain a high-quality geogrid.In the given tensile distance,increasing space or reducing diameter can improve the tensile strength of biaxial geog-rids along two directions.

关 键 词：塑料土工格栅 拉伸成型 预冲孔 双向土工格栅 

分 类 号：TQ322.3[化学工程—合成树脂塑料工业]