碳纤维增强磷酸钙骨水泥

以碳纤维为增强相,Na2HPO4/柠檬酸为调和液,α-磷酸三钙、磷酸四钙、磷酸二氢钙、羟基磷灰石和碳酸钙为原料制备骨水泥,研究不同掺杂比例的短碳纤维对其性能的影响。在磷酸钙骨水泥中掺杂碳纤维能够提高样品的致密性,缩短固化时间,提高抗压强度。当掺杂质量分数0.5%的碳纤维时,骨水泥的初凝、终凝时间分别为9.3和24.9min,模拟体液中浸泡28d后抗压强度最大为38.24MPa。掺杂的碳纤维对浸泡液pH影响不大,pH在小范围内浮动,均在人体安全范围内。

The calcium phosphate bone cement reinforced by carbon fiber

The effect of carbon fiber on the performance of calcium phosphate bone cement was studied.Calcium phosphate bone cement doped with carbon fiber was prepared from α-tricalcium phosphate, tetracalcium phosphate, monocalcium phosphate monohydrate, hydroxyapatite and calcium carbonate, in which Na2HPO4/citric acid was added as mixing liquid.The results show that carbon fiber doped in calcium phosphate cement can increase the density, reduce the setting time and enhance the compressive strength.When the doping amount of carbon fiber is 0.5%, the initial setting time and the final setting time is respectively 9.3and 24.9 min.The compressive strength reaches up to 38.24MPa after immersed 28din the simulated body fluid.Meanwhile, the doping of carbon fiber has little influence on the change of pH, which is in the range of human security.