FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy and can be used for production of moulds and rods for molten metal casting. Binder for mixture based on moulding material contains: (A) a first component of an organic binder; (B) a second component of an organic binder, supplementing a first component of the organic binder; and (C) alkylsilicate component, where the alkylsilicate component contains tetraethyl orthosilicate (TEOS) and/or alkyl silicate oligomer and additionally contains an amino silane with two linker fragments, where (A), (B) and (C) are provided in the form of a three-component system in separate containers for combining during use.
EFFECT: technical result is increased strength of casting mould at tension, especially in conditions of high relative humidity.
8 cl, 1 tbl
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