SU43565A1 - The method of preparation of insulating material - Google Patents

Description

The present invention relates to methods for preparing a heat insulating material using maize waste (cobs, stalks, stems, leaves, etc.).

According to the invention, selected and suspended cobs or cobs and other waste placed in an autoclave are poured at 15 ° C with half the amount (by weight) of a saturated solution of technical carbonate of ammonium (salt content 40% -44%). Then, a liquid coal tar, usually obtained as a waste from benzene or gas production, is added to the same autoclave, and the amount (by weight) of the resin relative to the weight of the raw material taken should be minimal, i.e. about 20%, the goal is to ensure a better course of the reaction and to obtain the starting material without an excess of unreacted resin. During the reaction, the autoclave is heated to a temperature of 120 ° C by a stream of heated steam passing through a layer of resin and a cob. The autoclave is heated for two to four hours or more, and volatile shoulder straps are formed in it, released by some of the resin and carried along by the steam that passes through it, such as benzene, naphthalene, their homologues and fatty acids.

Since the resulting plastic

the mass contains residues of unreacted pentazans and other substances in the form of a loose corky skeleton, strongly impregnated with the resulting adhesive mass, the reaction products are either mixed in an autoclave or directly extracted from it in a hot form with the intention of using adhesive plastic properties of liquid phases in the further course of the process. In both cases, the mixture, after being removed from the autoclave, is exposed to atmospheric air in order to remove all volatile substances, for which the entire mass is discharged onto the web and leveled. After cooling and transfer of the resulting mass to a solid state, it can be compacted in an obmny way, for example, with a hydraulic press with heating or without heating, with a conventional press, rollers, etc.

Greater resistance to decay, high technical properties and low cost on the ground obtained by the proposed method of mass, allows it to be used for tamping building walls by tamping with beaters of this plastic, laid in separate portions into the space between the wooden walls and shields dried plastics or shields made from reed straw stalks.

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To reduce the cost of plastics, plastics can be mixed with various fillers of both organic and non-organic nature, such as gravel, sand, straw.

The subject matter of the invention.

The method of preparation of thermal insulating g material using I

corn waste (cobs, stalks, stalks, leaves, etc.), characterized in that the said waste placed in an autoclave is first poured with a solution of carbonaceous salt, then coal tar and boiled with steam of about 120 °, after which the resulting mass is discharged onto the canvas and finally pressed one of the known methods.