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微孔注塑发泡聚氨酯成型工艺及 微观结构研究

Songtao Gu, Shuang Li,Lixiang Qin,Tie Geng,Penghui Deng,Haihong Wu,Xinchao Wang

China Rubber/Plastics Technology And Equipment（2018）

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Abstract
采用超临界CO2微孔注塑成型工艺制备热塑性聚氨酯弹性体(TPU)微孔泡沫材料,研究超临界流体(SCF)注塑发泡工艺对TPU泡沫微观结构及力学性能的影响规律.本文基于正交优化实验设计,以制品拉伸强度为优化指标,优化微孔成型工艺参数.最优微孔注塑工艺为:注射量16 cm3;SCF含量0.4％;注射速度60 cm3/s;保压压力1 MPa.本文通过研究成型工艺对制品结构及力学性能的影响,为超临界CO2制备高发泡率高性能TPU软质泡沫材料提供技术支持.
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