黑龙江科技大学学报2025，Vol.35Issue(1)：65-69,5.DOI:10.3969/j.issn.2095-7262.2025.01.010
可膨胀石墨在组合聚醚中的沉降问题及阻燃性能
Sedimentation and flame retardancy of expandable graphite in composite polyether
摘要
Abstract
This paper attempts to solve the sedimentation problem of expandable graphite(EG)in composite polyether.The study taking EG as raw material,includes conducting surface modification of expandable graphite(EG)with polyvinylpyrrolidone(PVP)and melamine(MA),and preparing the rigid polyurethane foam composites(RPUF).The results show that after modification,EG could remain in the composite polyether without settling for 30 days,solving the problem of EG settling easily in the composite polyether and forming at the bottom after long-term transportation and storage.The comprehen-sive performance of RPUF composite material made of 20 parts by mass MAEG has been improved com-pared to RPUF composite material made of 20 parts by mass EG,among which,the residual carbon rate of RPUF/MAEG increases by 1.82%compared to RPUF/EG,the flame retardancy LOI value increases to 25.9%,the compressive strength increases from 0.079 MPa to 0.111 MPa.The apparent density has been significantly improved.关键词
可膨胀石墨/硬质聚氨酯泡沫/三聚氰胺/组合聚醚/悬浮沉降Key words
expandable graphite/rigid polyurethane foam/melamine/combination polyether/sus-pension sedimentation分类
化学工程引用本文复制引用
王振廷,赵国华,尹吉勇..可膨胀石墨在组合聚醚中的沉降问题及阻燃性能[J].黑龙江科技大学学报,2025,35(1):65-69,5.基金项目
黑龙江省"双一流"学科协同创新成果建设项目(LJGXCG2022-114) （LJGXCG2022-114）
