CAJ | 학술논문

对磷酸镁水泥在不同温度处理下的表观形貌、体积收缩率和抗压强度进行了研究,并通过XRD、SEM对各个温度阶段的物相及微观形貌进行了分析,利用TG-DSC研究了加热过程中的质量变化和所产生的热效应。结果表明,在200℃以下,磷酸镁水泥强度减小较大;在400～800℃之间,强度变化相对较小;在更高的温度下,由于烧结现象的出现,磷酸镁水泥的强度甚至有所增长;当温度达到1400℃,磷酸镁水泥的整体结构仍然保持完整,但体积则发生了较大的收缩。磷酸镁水泥具有良好的高温稳定性。
대린산미수니재불동온도처리하적표관형모、체적수축솔화항압강도진행료연구,병통과XRD、SEM대각개온도계단적물상급미관형모진행료분석,이용TG-DSC연구료가열과정중적질량변화화소산생적열효응。결과표명,재200℃이하,린산미수니강도감소교대;재400～800℃지간,강도변화상대교소;재경고적온도하,유우소결현상적출현,린산미수니적강도심지유소증장;당온도체도1400℃,린산미수니적정체결구잉연보지완정,단체적칙발생료교대적수축。린산미수니구유량호적고온은정성。
Apparent morphological, volume shrinkage and compressive strength of after different temperature treatment were studied, as well as using XRD and SEM to study phases and microstructure of samples, TG-DSC to study the quality change and thermal effects during heating. Results indicate, compressive strength of magnesium phosphate cement reduces large when heating to 200°C, the strength of samples changes were relatively small between 400-800°C. The strength of magnesium phosphate cement increased even when temperatures reach 1400°C since sintering phenomena appear. Magnesium phosphate cement structure remains intact among the whole temperature range, but there have been larger change in the volume shrinkage. Magnesium phosphate cement has a good thermal stability.