FIELD: technological processes.
SUBSTANCE: invention is related to cured without heating binding agent composition, which is able to be mixed and cured under conditions without heating. Cured without heating binding agent composition is described, which contains the following main components: trifunctional or tetrafunctional phenol that carries one or two electron-donating groups on phenol benzene ring, coupling agent and catalyst, and trifunctional or tetrafunctional phenol benzene ring has three or four carbon positions that are able to interact with coupling agent, where coupling agent is aldehyde or xylain glycol, and catalyst content is approximately from 10-5 to 0.3 gram-molecules per gram-molecule of trifunctional or tetrafunctional phenol. Also the set is described for production of cured without heating binding agent (variants); method is described to produce moulded piece out of phenol resin that contains above mentioned cured without heating composition; moulded piece out of phenol resin that is produced by above described method; method of making sand mould for casting, which contains the following stages: (A) mixing of moulding sand, dissolvent and above mentioned cured without heating binding agent composition, and (B) casting of prepared mixture in mould, moulding and curing it under conditions without heating; sand mould for casting made by the above mentioned method; method of producing porous ceramic moulded piece, which includes the following stages: (C) mixing of ceramic powder, surface-active substance, dissolvent, phosphate and above mentioned binding agent composition cured without heating, (D) casting of prepared mixture into mould, moulding and curing under conditions without heating, and (E) baking of prepared cured item at the temperature of 600-1900°C; porous ceramic item produced by above mentioned method: method of producing ceramic moulded piece, which includes the following stages: (F) mixing of ceramic powder, phosphate (or its hydrate) and above mentioned binding agent composition cured without heating; (G) casting of prepared mixture in mould, moulding and curing under conditions without heating, and (H) baking of produced cured item at the temperature 600-1900°C; ceramic moulded piece produced by above mentioned method; method of crucible production; method of making composite material carbon/carbon; composite material carbon/carbon produced by above mentioned method.
EFFECT: reduces power consumption and simplifies production process.
24 cl, 23 ex, 1 tbl
