提出了利用石蜡／膨胀石墨复合相变材料（ CPCM）的热效应调控磷酸镁水泥（ MPC）水化热的方法，通过测试加入CPCM的凝结时间、流动性、水化温度、抗压强度和导热系数等性能的变化，研究了CPCM对MPC水化性能的影响。结果表明，可以通过CPCM相变吸放热来调控MPC的水化热，使其水化体系温度降低，水化反应速度减慢，达到降低水化热的目的；但是会使MPC的抗压强度下降，加入钢纤维会大幅度提高其抗压强度；机理分析表明CPCM不参与MPC的水化反应，而是与MPC物理结合，保持了各自的优良性能，保证了MPC体系的结构稳定和性能优良。
The thermal effect of paraffin/expanded graphite composite phase change materials ( CPCM ) was proposed to control the hydration heat of magnesium phosphate cement ( MPC) .By testing the setting time, fluidity, hydration temperature, compressive strength and thermal conductivity of CPCM , the effect of CPCM on the hydration properties of MPC was explored .The results showed that the hydration heat of MPC was controlled by the phase change .The hydration system temperature was reduced , and the hydration reaction rate was slowed down and the goal of reducing the hydration heat was accomplished .At the same time , the degree of crystallinity of MgKPO 4 · 6 H2 O was decreased lightly , and it made the compressive strength of MPC change small .CPCM did not participate in the hydration reaction of MPC , but combined by the physical effect with MPC , maintained their excellent performance , and ensured the stability and performance of the MPC system .
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