摘要
研究了无机钠盐和镁盐对聚氨酯注浆材料固化过程温度的影响,并研究了添加无机盐对材料阻燃性能、表面电阻及抗压强度的影响。结果表明,环境温度为35℃,添加聚醚组分1.2%(质量百分比)无机盐,注浆材料固化最高温度有不同程度下降。其中,添加MgCl2时,注浆材料固化最高温度为102℃,与空白相比,下降了25℃。添加无机盐后,材料阻燃性能略有提高,表面电阻基本不变;抗压强度有所降低。热重分析表明,添加MgCl2时材料的热稳定性无明显改变,而添加其它无机盐,热稳定性有不同程度降低。
The effects of inorganic sodium and magnesium salts on curing temperature of polyurethane grouting material were investigated , and the effects of those salts on material properties including flame resistance , surface resistance and compression strength were studied.Results showed that the maximum curing temperatures decreased in varying extent at ambient temperature 35 ℃after 1.2% （ mass percentage ） of studied inorganic salts based on polyether polyalcohol component were added into polyurethane grouting material.Among them, when MgCl2 was added, the maximum curing temperature decreased 25 ℃ in comparison with control , to reach 102 ℃.Adding inorganic salts , a slight increase in flame retardant property of the material was observed , almost no change in surface resistance , and a decrease in compressive strength was observed also.Thermal gravimetric analysis displayed that the thermal stability of the material blending MgCl 2 exhibited no obvious change , while the material blending the other studied inorganic salts reduced in varying degrees.
出处
《广州化工》
CAS
2014年第12期60-62,66,共4页
GuangZhou Chemical Industry
基金
全国大学生创新训练计划项目资助(201210361085)
关键词
聚氨酯注浆材料
无机盐
固化温度
阻燃性能
表面电阻
polyurethane grouting material
inorganic salt
curing temperature
flame resistance
surface resistance
