中国塑料2024，Vol.38Issue(11)：87-92,6.DOI:10.19491/j.issn.1001-9278.2024.11.015
材料物性参数对双层微管气体辅助共挤出胀大的影响
Effect of material physical parameters on gas-assisted coextrusion swelling for double-layer microtubule
摘要
Abstract
In this study,the traditional micro-coextrusion and gas-assisted micro-coextrusion flow models were estab-lished for double-layered microtubules.The effects of zero shear viscosity(η0),relaxation time(λ),and material param-eters ε and ξ on the die swell rate were investigated by using a numerical simulation technology.The results indicated that the die swell rate was greatly affected by η0 and λ in the traditional micro-coextrusion process.With an increase in the outer melt viscosity,the die swell rate increased from 29.15％to 43.77％and then tended to be stable.The die swell rate was less affected by ε and ξ,and it decreased slightly with an increase in ε andξ.The die swell rate varied between 37％and 39％.However,in the gas assisted co-extrusion process,the die swell rate always approached zero when η0,λ,ε and ξ changed,and there was no obvious swelling or deformation phenomenon.关键词
材料物性参数/双层微管共挤/气体辅助技术/挤出胀大Key words
material physical parameter/double-layer microtubule coextrusion/gas-assisted technology/die swell分类
化学化工引用本文复制引用
肖兵,刘彪,陈天荣,纪海波,邓小珍,徐芳,曾嘉航..材料物性参数对双层微管气体辅助共挤出胀大的影响[J].中国塑料,2024,38(11):87-92,6.基金项目
江西省教育厅科学技术研究项目(GJJ190950) （GJJ190950）
江西省2024年大学生创新创业训练计划(省级)(S202411319014) （省级）
江西省自然科学基金面上项目(20202BABL204025) （20202BABL204025）
江西省2023年度研究生创新计划项目(YC2023-S999) （YC2023-S999）
