Process for the manufacture of polymeric materials with a high chemical and mechanical resistance and polymeric materials with a high chemical and mechanical resistance

摘要

PCT No. PCT/PL95/00005 Sec. 371 Date Apr. 17, 1996 Sec. 102(e) Date Apr. 17, 1996 PCT Filed Mar. 15, 1995 PCT Pub. No. WO95/28440 PCT Pub. Date Oct. 26, 1995A process for the manufacture of materials with a high chemical and mechanical resistance in which for each 100 parts by volume of vinylester resin treated with 0.85-1.47 parts by volume of an accelerant in the form of cobalt naphthenate, there are added at least in two batches 50-900 parts by volume of an inorganic filler constituting previously roasted at a temperature not lower than 470 K disintegrated to a particle size of at least 30 mu m phosphogypsum or a composition of phosphogypsum with glass-forming oxides or phosphogypsum with magnetite or phosphogypsum with microsphere, after which on continuous stirring there is added, if necessary, up to 60 parts by volume of styrene and/or up to 0.2 parts by volume of dimethylaniline, and then the whole is polymerized in the presence of know initiators such as organic peroxides. The materials with a high chemical and mechanical resistance constitute polymerized composition of synthetic resin and inorganic fillers, consisting of 7.5-88.1% by weight of vinylester resin, styrene and/or a low-molecular-weight unsaturated polyester resin in a quantity up to 34.1% by weight, and 14.3-86.6% by weight of phosphogypsum or 0.4-46.6% by weight of phosphogypsum and 6.4-44.8% by weight of glass-forming oxides or 4.6-53.5% by weight of microsphere or 5.5-42.1% by weight of magnetite. The process for the manufacture of these materials makes it possible to utilize industrial wastes resulted from production of phosphoric acid, while the material itself in all its varieties is characterized by a very good resistance to aggressive media, also at elevated temperatures, and suitable for processing by mechanical methods as well as for combining with other materials by using to that end an incompletely polymerized composition of the material.