"Preparation of cast polyurethane foams by physico-chemical co-foaming process and their properties"
- 1"College of Intelligent Systems Science and Engineering/Key Laboratory of Green Manufacturing of Super-Light Elastomer Materials of State Ethnic Affairs Commission, Hubei Minzu University, Enshi 445000, China"
Abstract
"Cast polyurethane foams were prepared via the physico-chemical co-foaming process and with methylene diphenyl diisocyanate polyether polyol as raw materials， expanded microspheres as physical foaming agent， and supplemented with auxiliary additives including chain extender， crosslinking agent， and foam stabilizer， and their micromorphology， physical and mechanical properties， tear resistance and compression resistance were compared with that of expanded microsphere-free polyurethane foam. The results showed that the addition of the physical foaming agent could make the cell structure of polyurethane foams more uniform， reduce the average cell diameter by 60%， lower the density to 0.509 g/cm3， and the maximum foa-ming ratio could reach 1.18； compared with that of expanded microsphere-free polyurethane foam， the addition of expanded microspheres of mass fraction of 1‰-3‰ endowed the polyurethane foams with the maximum increase in tensile strength by 20%， tear strength by 25%， and compressive strength by 40%； the synergistic effect could be achieved between a small amount of physical foaming agent and the chemical foaming agent， and regulating cell nucleation and growth could effectively improve the microscopic cell structure of polyurethane foams， reduce internal defects， thereby achieving an overall improvement in macroscopic mechanical properties while reducing density. "
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BibTeX
@article{zhaowei2026preparation,
title = {{"Preparation of cast polyurethane foams by physico-chemical co-foaming process and their properties"}},
author = {ZHAO Wei, WANG Yuqi, ZHUO Qing, LI Mingpu, DONG Hangyu, LI Yuanyuan, LI Yingru},
journal = {Hecheng xiangjiao gongye},
year = {2026},
month = aug,
doi = {10.19908/j.cnki.issn1000-1255.2026.04.0261},
url = {https://doi.org/10.19908/j.cnki.issn1000-1255.2026.04.0261},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - "Preparation of cast polyurethane foams by physico-chemical co-foaming process and their properties"
AU - ZHAO Wei, WANG Yuqi, ZHUO Qing, LI Mingpu, DONG Hangyu, LI Yuanyuan, LI Yingru
PY - 2026
DA - 2026/08/01
JO - Hecheng xiangjiao gongye
DO - 10.19908/j.cnki.issn1000-1255.2026.04.0261
UR - https://doi.org/10.19908/j.cnki.issn1000-1255.2026.04.0261
AB - "Cast polyurethane foams were prepared via the physico-chemical co-foaming process and with methylene diphenyl diisocyanate polyether polyol as raw materials， expanded microspheres as physical foaming agent， and supplemented with auxiliary additives including chain extender， crosslinking agent， and foam stabilizer， and their micromorphology， physical and mechanical properties， tear resistance and compression resistance were compared with that of expanded microsphere-free polyurethane foam. The results showed that the addition of the physical foaming agent could make the cell structure of polyurethane foams more uniform， reduce the average cell diameter by 60%， lower the density to 0.509 g/cm3， and the maximum foa-ming ratio could reach 1.18； compared with that of expanded microsphere-free polyurethane foam， the addition of expanded microspheres of mass fraction of 1‰-3‰ endowed the polyurethane foams with the maximum increase in tensile strength by 20%， tear strength by 25%， and compressive strength by 40%； the synergistic effect could be achieved between a small amount of physical foaming agent and the chemical foaming agent， and regulating cell nucleation and growth could effectively improve the microscopic cell structure of polyurethane foams， reduce internal defects， thereby achieving an overall improvement in macroscopic mechanical properties while reducing density. "
SN - 1000-1255
ER -