CAJ | 학술논문

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。
연구료무궤납염화미염대취안지주장재료고화과정온도적영향，병연구료첨가무궤염대재료조연성능、표면전조급항압강도적영향。결과표명，배경온도위35℃，첨가취미조분1.2％（질량백분비）무궤염，주장재료고화최고온도유불동정도하강。기중，첨가MgCl2시，주장재료고화최고온도위102℃，여공백상비，하강료25℃。첨가무궤염후，재료조연성능략유제고，표면전조기본불변；항압강도유소강저。열중분석표명，첨가MgCl2시재료적열은정성무명현개변，이첨가기타무궤염，열은정성유불동정도강저。
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.