文献类型：期刊文献

英文题名：Microcellular Thermoplastic Polyurethane (TPU) with Multimodal Cell Structure Fabricated Based on Pressure Swing Strategy and Its Compressive Mechanical Properties

作者：Chen, Yichong[1,2,4];Zhong, Wenyu[1];Jia, Xingyu[1];Hu, Dongdong[1];Sun, Jiayang[1];Peng, Yao[1];Yu, Jiabao[1,3];Jiang, Xiulei[3];Wang, Huifeng[2];Zhao, Ling[1,4]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China;[3]Suzhou Shincell New Mat Co Ltd, Suzhou 215000, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Elect Chem Innovat Inst, Shanghai 201419, Peoples R China

年份：2024

卷号：63

期号：19

起止页码：8833

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20241916049581);WOS:【SCI-EXPANDED(收录号:WOS:001231004400001)】；

基金：This work was supported by the National Natural Science Foundation of China (22308097), the National Key Research and Development Program of China (2016YFB0302200), the Fundamental Research Funds for the Central Universities (JKA012011002), and the 111 Project (B20031).

语种：英文

外文关键词：Biomechanics - Cells - Cytology - Polyurethanes - Production efficiency - Reinforced plastics

摘要：The production of soft thermoplastic polyurethane (TPU) foam typically faces challenges such as low production efficiency and inherent shrinkage characteristics. In addressing these issues, this study combines the pressure swing strategy with a N-2/CO2 mixed foaming strategy, and based on the mixed gas state equation and cubic antishrinkage model, this study systematically investigates their influence on the production process of TPU foam. The results indicate that the pressure swing strategy significantly reduces the saturation time and achieves a TPU foam with a multimodal cell structure. By adjusting parameters such as the CO2/N-2 ratio and residual pressure, the pressure swing strategy can flexibly regulate the cell size (20.41-312.42 mu m) and expansion ratio (2.59-7.17). Compared to TPU foam with a uniform cell structure, TPU foam with a multimodal cell structure exhibits superior resilience (energy loss coefficient of similar to 21% and compression modulus of similar to 0.63 MPa) and fatigue resistance (maximum stress of similar to 0.21 MPa and compression strength of similar to 0.02 MPa). This work is of significant importance for enhancing the performance of elastomeric foams and improving the efficiency of the production process.