耐火聚氨酯泡沫材料协同成炭研究  

Study on Synergic Char Formation of Fireproof Polyurethane Foam Materials

作　　者：高尚兵 彭乃勇 崔红凤 黄杰 岳子棋 刘和文 GAO Shang-bing;PENG Nai-yong;CUI Hong-feng;HUANG Jie;YUE Zi-qi;LIU He-wen(State Grid Anhui Fuyang Power Supply Co.,Ltd.,Fuyang 236112,China;Institude of Advanced Technology,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]国网安徽省电力有限公司阜阳供电公司,安徽阜阳236112 [2]中国科学技术大学先进技术研究院,安徽合肥230026

出　　处：《塑料科技》2022年第3期49-52,共4页Plastics Science and Technology

基　　金：国家电网科学技术项目(SGAHFY00BDJS2100402)。

摘　　要：为了开发高分子耐火封堵材料,利用不同成炭材料的协同效应,提升聚氨酯(PU)泡沫材料的耐火性能,探究淀粉、低熔点玻璃粉(LMP)和膨胀石墨(EG)对PU泡沫材料的极限氧指数(LOI)、残炭强度的影响。结果表明:淀粉、LMP和EG共同作用,可以增强残炭的韧性。LMP或淀粉的加入可以显著抑制高温热失重反应焓。添加淀粉后时,PU泡沫燃烧后炭层中sp2杂化碳组分显著增加,残炭层热稳定性显著增强。含有20%淀粉、20%EG与20%LMP的PU泡沫材料可以在900~1 100℃环境中耐受3 h。In order to develop polymer fireproof materials, the synergistic effect of different carbonized materials was used to improve the fireproof of polyurethane(PU) foam materials. The effects of starch, low melting point glass powder(LMP) and expanded graphite(EG) on the limiting oxygen index(LOI) and residual carbon strength of PU foam materials were investigated. The results show that starch, LMP and EG can enhance the toughness of residual carbon. The addition of LMP or starch can significantly inhibit the enthalpy of high temperature thermo-gravimetric reaction. After adding starch, the sp2hybrid carbon components in the residual carbon layer of PU foam combustion increases significantly, and the thermal stability of the residual carbon layer increases significantly. PU foam materials containing 20% starch, 20%EG and 20% LMP can withstand for 3 h at 900~1 100℃.

关 键 词：聚氨酯泡沫 膨胀石墨 低熔点玻璃粉 淀粉 耐火性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]