Efficient furan resin for casting as well as preparation method thereof

Abstract

The invention relates to the technical field of mechanical casting, in particular to efficient furan resin for casting as well as a preparation method thereof. The efficient furan resin for casting can reduce release of formaldehyde and reduce damage to staff; furthermore, when furan resin sand is prepared, various properties of the furan resin sand for casting can be improved; the efficient furanresin for casting is prepared by mixing the following components in parts by weight of 1200 parts of furfuryl alcohol, 650 parts of environmentally-friendly formaldehyde, 300 parts of urea, 100 partsof ammonia water, 4 parts of ammonium chloride, 400 parts of phenol, 100 parts of concentrated hydrochloric acid, 50 parts of a modifier, 20 parts of a filling agent, 10 parts of an anti-ageing agent, 15 parts of a water-resistant agent, 20 parts of a multi-component composite additive, 30 parts of a lubricating agent, 8 parts of a microporous stabilizer and 40 parts of pigment; and the preparation method of the furan resin comprises the following steps of (1) preparing a first intermediate product; (2) cooling the first intermediate product; (3) preparing a second intermediate product; (4) cleaning the second intermediate product; (5) making a condensation polymerization reaction; (6) performing dehydration treatment; (7) performing modification treatment; and (8) performing color adjustment.

Description

technical field [0001] The invention relates to the technical field of mechanical casting, in particular to a high-efficiency casting furan resin and a preparation method thereof. Background technique [0002] Furan resin refers to the general term for resins with furan rings produced from furfuryl alcohol and furfural with furan rings as raw materials, which solidify into insoluble and infusible solids under the action of strong acid. Furfuryl alcohol resin is one of the furan resin series products. Furfuryl alcohol resin is made by adding furfuryl alcohol as the main body and adding urea-formaldehyde resin or phenolic resin pre-condensation polymer. It is a brown liquid with good heat resistance and water resistance. The solution has excellent resistance and is an excellent preservative; furfuryl alcohol resin has high strength and is an excellent binder for wood, rubber, metal and ceramics, and can also be used to produce coatings; an important use of sugar alcohol resin...

AI Technical Summary

Problems solved by technology

[0004] But when existing furan resin is used in casting process, there is the problem of formaldehyde release, very easily causes damage to the health of staff, and environmental performance is relatively poor; And when furan resin is used for making furan resin sand, furan The properties of the resin sand are not high enough to be applicable to most casting requirements. Therefore, the present invention cites the environmentally friendly formaldehyde prepared in CN107857606A as a raw material for production