Kent K, Zeigel R F, Kent K, Frost A L, Schaaf N G
J Prosthet Dent. 1983 Aug;50(2):230-6. doi: 10.1016/0022-3913(83)90023-9.
The chemical components of the four silicone rubber polymers were reviewed. Methods of controlling the porosity and density of both the one-component semisolid prepolymer and the two-component fluid prepolymer systems were evaluated. The variables examined were deairing of the fluid systems; trial packing, pressure sealing, and processing of the semisolid materials; injection versus hand packing of the mold; the effects of moist-heat versus dry-heat application during processing; and the need for investment of the mold within the confines of a closed flask. It can be concluded that porosity of medical-grade silicone rubber polymers may be totally prevented, or accurately controlled, by proper handling techniques.
对四种硅橡胶聚合物的化学成分进行了综述。评估了控制单组分半固体预聚物和双组分流体预聚物体系孔隙率和密度的方法。所研究的变量包括流体体系的脱气；半固体材料的试填充、压力密封和加工；模具的注射填充与手工填充；加工过程中湿热与干热应用的效果；以及在密闭烧瓶范围内对模具进行包埋的必要性。可以得出结论，通过适当的处理技术，可以完全防止或精确控制医用级硅橡胶聚合物的孔隙率。
