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以氧化镁和磷酸二氢钾为主要原料,对高活性的氧化镁进行预包覆处理后制备出镁基骨黏合剂(MBA)。测试表征了其水化反应过程中的放热温度及固化时间、固化产物的抗压强度,并借助XRD和SEM对预包覆氧化镁的相组成及微观形貌进行观察分析。研究结果表明:采用氧化镁的预包覆处理新工艺能够控制MBA的固化行为,其中在固相比为4∶1时,选用35∶1的预包覆氧化镁与磷酸二氢钾混合制备的MBA,放热峰值温度为65℃,固化时间控制在2 min,抗压强度达到最大值18 MPa。预包覆氧化镁对MBA水化产物的相组成没有影响,即采用新工艺在不引入其他物质的同时,使得MBA保持了原有的结构与性能。
Abstract：Magnesium-based bone adhesive(MBA)was prepared by pre-coating high activity magnesium oxide with magnesium oxide and potassium dihydrogen phosphate as main raw materials. The exothermic temperature of hydration reaction,curing time,compressive strength of the cured product were measured,and the phase composition and microstructure of the pre-coated magnesium oxide were observed and analyzed by XRD and SEM. The research results showed that the curing behavior of MBA could be controlled by the new process of magnesium oxide pre-coating. When the solid phase was 4∶1,and 35∶1 of pre-coated magnesium oxide and potassium dihydrogen phosphate were used for preparing the MBA,the exothermic peak temperature was 65 ℃,the curing time was controlled within 2 minutes,and the compressive strength reached the maximum of 18 MPa. The pre-coated magnesium oxide had no effect on the phase composition of MBA hydration product,that meant,the new process maintained the original structure and performance of MBA without introducing other substances.
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基本信息:
DOI：10.13416/j.ca.2020.02.005
中图分类号:TQ177
引用信息:
[1]马安博.一种新型镁基骨黏合剂固化行为研究[J].中国胶粘剂,2020,29(02):17-21.DOI:10.13416/j.ca.2020.02.005.
基金信息:
2019年西安航空职业技术学院校级综合科研项目（19XHZH-008）