中文摘要：

　将2%羟丙基甲基纤维素（医药级,泰安瑞泰纤维素有限公司）加入磷酸钙骨水泥（解放军总医院骨科研究所）后,将其注入到蒸馏水中震摇,观察水泥表面稀散现象。取一定量的水泥在混合后不同时间点注入到蒸馏水中,24h后取出称剩余骨水泥量。结果表明,加入2%羟丙基甲基纤维素的磷酸钙骨水泥在水中震摇表面无稀散现象发生,24h剩余骨水泥量测量结果显示加入羟丙基甲基纤维素后,磷酸钙骨水泥粘结时间由4min缩短为1min。可见2%羟丙基甲基纤维素可明显增加磷酸钙骨水泥的防水性能,延长工作时间,适于临床应用。

英文摘要：

2% hydroxypropyl methyl cellulose （HPMC, medical grade, Taian Ruitai Cellulose Co., Ltd.） was added into calcium phosphate cement （Orthopedics Institute of General Hospital of Chinese PLA） and the mixture was put into distilled water to observe whether the surface was corrupt. Some calcium phosphate cement was immersed in water at different time and the residual cement was weighed 24 hours later. The results showed that there was no surface corruption in calcium phosphate cement with 2% HPMC after shake; the residual weight measured 24 hours later showed that 2% HPMC could shorten calcium phosphate cement cohesion time from 4 minutes to 1 minutes. The experiment indicates that 2% HPMC can significantly increase the waterproof performance of calcium phosphate cement, increase the work time and is adaptable in clinical application.