CAJ | 학술논문

以质量分数70％的硅酸三钙（Ca3 SiO5，C3 S）和30％磷酸氢钙（CaHPO4·2H2 O，DCPD）复合得到的 DCP30粉体材料为固相，以不同浓度碳酸钠溶液为液相，得到碳酸钠改性骨水泥材料。使用 X 射线衍射（XRD）、扫描电镜（SEM）、万能材料试验机等手段对不同浓度改性材料进行表征。结果显示：添加碳酸钠液相，骨水泥初、终凝时间分别缩短至16和55 min；调控碳酸钠液相浓度，可以实现短期抗压强度优化；使用碳酸钠后，固化自发生成羟基磷灰石（HA）。浸泡模拟体液（SBF）7天，材料表面覆盖 HA 沉积层，生物活性优越。碳酸钠液相改性硅-磷酸钙复合骨水泥体系的水化性能、短期力学性能以及生物活性均优于Ca3 SiO5水泥和未改性硅-磷酸钙复合骨水泥，是一种良好的生物活性骨修复材料。
이질량분수70％적규산삼개（Ca3 SiO5，C3 S）화30％린산경개（CaHPO4·2H2 O，DCPD）복합득도적 DCP30분체재료위고상，이불동농도탄산납용액위액상，득도탄산납개성골수니재료。사용 X 사선연사（XRD）、소묘전경（SEM）、만능재료시험궤등수단대불동농도개성재료진행표정。결과현시：첨가탄산납액상，골수니초、종응시간분별축단지16화55 min；조공탄산납액상농도，가이실현단기항압강도우화；사용탄산납후，고화자발생성간기린회석（HA）。침포모의체액（SBF）7천，재료표면복개 HA 침적층，생물활성우월。탄산납액상개성규-린산개복합골수니체계적수화성능、단기역학성능이급생물활성균우우Ca3 SiO5수니화미개성규-린산개복합골수니，시일충량호적생물활성골수복재료。
Sodium carbonate solution modified bone cement materials have been prepared using sodium carbonate solution with dif-ferent concentration as liquid phase and DCP30 powder material obtained by 70% mass fraction tricalcium silicate (Ca3 SiO5 ,C3 S) and 30% dicalcium phosphate (CaHPO4 ·2H2 O,DCPD)as the solid phase.The materials were characterized by the means of X-ray diffraction (XRD),scanning electron microscope (SEM)and mechanical test.The results show that the initial and final set-ting time of bone cement is reduced to 16 and 55 min by the addition of sodium carbonate solution.The short-term mechanical strength can be optimized by controlling the concentration of sodium carbonate solution.Hydroxyapatite (HA)can spontaneously form after the use of sodium carbonate solution.HA forms on the surface of bone-cement after immersion in SBF for 7 days,indi-cating its good bioactivity.The modified system shows better hydraulic property,bioactivity and mechanical strength than Ca3 SiO5 cement and unmodifiled silicate-calcium phosphate composite bone cement,suggesting the new system is a good bioactive material for bone repair.