| 摘要 |
This invention is concerned with a process for preparing ceramic-like materials suitable for a wide range of application, by binding an inorganic filler of a grain size of up to 20 mu m, used in the form of phosphogypsum or phosphogypsum and magnetite, or phosphogypsum and glass-forming oxides, with epoxy resin or a mixture of epoxy resin and polyester resin, the latter amounting to 80 % by volume, with the volume ratio of the resin component to the filler being 1:0.45-2. The resultant ceramic-like materials are water resistant and can be easily formed, also by casting, and additionally by mechanical working, if required. The ceramic-like materials containing magnetite show magnetic properties, while those containing glass-forming oxides are able to absorb an X-radiation of 45-55 keV and a hard radiation of 0.6-1.25 MeV. The addition of an expanding agent such as butyl isocyanate to the raw composition makes it possible to prepare an expanded material with completely closed pores. Due to very good adhesion of the ceramic-like to metal, glass, plastics, concrete it can be easily joined with these materials both during the polymerization process and after its termination, also by using a prepolymerized composition as a binder. |
