镁基骨胶粘剂水化放热温升规律研究

Study on the Law of Hydration Exothermic Temperature Rise of Magnesium-based Bone Adhesive

镁基骨胶粘剂由氧化镁、磷酸盐及固化液混合制备而成,在制备过程中会放出大量热量,加快水化放热反应,使温度应力增大,容易导致温度裂缝,降低最终固化体性能。此外,反应过程属于放热反应而存在引发机体发生炎症反应的风险。如何有效地调控MBA的水化热、系统地探究MBA水化热的控制方法是一个迫切需要深入研究的课题。主要考察了原料、液固比、固相比、固化液以及环境温度对MBA放热温升的影响规律,以求找到控制MBA体系放热温升的有效技术途径。

The magnesium-based bone adhesive is prepared by mixing magnesium oxide,phosphate and curing liquid.During the preparation,it releases a lot of heat,accelerates the hydration exothermic reaction,increases the temperature stress,easily leads to temperature cracks,and reduces the performance of final curing body.In addition,the reaction process belongs to exothermic reaction and there is a risk of causing inflammation in the body.How to effectively control the hydration heat of MBA and systematically explore the control methods of MBA hydration heat is an urgent and in-depth research topic.The influences of raw material,liquid-solid ratio,solid phase ratio,curing solution and ambient temperature on the exother-mic temperature rise of MBA system are investigated in order to find an effective technical way to control the exothermic temperature rise of MBA sys-tem.