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Furan resin loaded nano ceramic modified molding sand

A technology of furan resin and nano-ceramics, which is applied in the direction of casting molds, cores, casting molding equipment, etc., can solve the problems of oxidation corrosion, operator injury, unsuitable for large-scale production and use, and achieve easy curing molding, not easy to fall sand, The effect of improving labor productivity

Active Publication Date: 2020-02-21
ANHUI SOLID FOUNDRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, strong oxidizing substances such as concentrated nitric acid are added to this kind of molding sand, which is easy to cause oxidative corrosion to other components. When used, it will also cause a certain degree of harm to the operator. Therefore, it is not suitable for large-scale production.

Method used

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  • Furan resin loaded nano ceramic modified molding sand
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A furan resin-loaded nano-ceramic modified molding sand is characterized in that it is made of the following components by weight: 50 parts of silica sand, 40 parts of quartz sand, 2 parts of manganese sand, 3 parts of white marble sand, 3 parts of glass sand, 3 parts of corundum, 1 part of borax, 2 parts of rare earth porcelain sand, 4 parts of fly ash, 5 parts of triethoxy-2-furan silane modified nano-ceramic powder, 6 parts of furan resin, epoxy-terminated polyurethane / 2, 4 parts of 5-di(aminomethyl)furan polycondensate, 2 parts of hyperbranched epoxy resin, and 25 parts of water.

[0027] The preparation method of the triethoxy-2-furan silane modified nano-ceramic powder comprises the following steps: dispersing the nano-ceramic powder in ethanol, adding triethoxy-2-furan silane to it, and heating the nano-ceramic powder at 60°C The reaction was stirred for 4 hours, and the solvent was removed by rotary evaporation to obtain triethoxy-2-furan silane modified nano-ce...

Embodiment 2

[0032] A furan resin-loaded nano-ceramic modified molding sand is characterized in that it is made of the following components by weight: 55 parts of silica sand, 43 parts of quartz sand, 3 parts of manganese sand, 4 parts of white marble sand, 3.5 parts of glass sand, 4 parts of corundum, 1.5 parts of borax, 2.5 parts of rare earth porcelain sand, 5 parts of fly ash, 6 parts of triethoxy-2-furan silane modified nano-ceramic powder, 7 parts of furan resin, epoxy-terminated polyurethane / 2, 5 parts of 5-di(aminomethyl)furan polycondensate, 2.5 parts of hyperbranched epoxy resin, and 27 parts of water.

[0033] The preparation method of the triethoxy-2-furan silane modified nano-ceramic powder comprises the following steps: dispersing the nano-ceramic powder in isopropanol, then adding triethoxy-2-furan silane, Stir and react at 60°C for 4 hours, then remove the solvent by rotary evaporation to obtain triethoxy-2-furan silane modified nano-ceramic powder; the nano-ceramic powder,...

Embodiment 3

[0037] A furan resin-loaded nano-ceramic modified molding sand is characterized in that it is made of the following components by weight: 60 parts of silica sand, 45 parts of quartz sand, 3.5 parts of manganese sand, 4.5 parts of white marble sand, 4 parts of glass sand, 4.5 parts of corundum, 2 parts of borax, 3 parts of rare earth porcelain sand, 6 parts of fly ash, 7.5 parts of triethoxy-2-furan silane modified nano-ceramic powder, 7.5 parts of furan resin, epoxy-terminated polyurethane / 2, 5.5 parts of 5-bis(aminomethyl)furan polycondensate, 3 parts of hyperbranched epoxy resin, and 30 parts of water.

[0038] The preparation method of the triethoxy-2-furan silane modified nano-ceramic powder comprises the following steps: dispersing the nano-ceramic powder in acetone, and then adding triethoxy-2-furan silane to it, at 70°C The reaction was stirred for 5 hours, and the solvent was removed by rotary evaporation to obtain triethoxy-2-furan silane modified nano-ceramic powder;...

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Abstract

The invention discloses furan resin loaded nano ceramic modified molding sand. The furan resin loaded nano ceramic modified molding sand is characterized by comprising the components, by weight, 50-70parts of silica sand, 40-50 parts of quartz sand, 2-5 parts of manganese sand, 3-6 parts of white marble sand, 3-5 parts of glass sand, 3-6 parts of emery, 1-3 parts of borax, 2-4 parts of rare earthporcelain sand, 4-8 parts of coal ash, 5-10 parts of triethoxy-2-furan silane modified nano ceramic powder, 6-9 parts of furan resin, 4-7 parts of epoxidized polyurethane / 2,5-di(aminomethyl) furan polycondensate, 2-4 parts of hyperbranched epoxy resin and 25-35 parts of water. The invention also discloses a preparation method of the furan resin loaded nano ceramic modified molding sand. The furanresin loaded nano ceramic modified molding sand has the advantages of being good in air permeability, flowability, and dispersibility, high in strength, good in heat resistance, excellent in comprehensive performance, smooth in casting surface, not prone to falling out, and capable of being recycled and reused.

Description

technical field [0001] The invention relates to the technical field of molding sand, in particular to furan resin loaded nano-ceramic modified molding sand. Background technique [0002] Casting is the process of smelting metal into a liquid that meets certain requirements and pouring it into a mold, cooling and solidifying, and cleaning to obtain a casting with a predetermined shape, size and performance. Because the casting blank is almost formed, it achieves the purpose of no machining or a small amount of processing, which reduces the cost and reduces the production time to a certain extent. Casting is one of the basic processes of the modern device manufacturing industry. An indispensable material in the casting process is molding sand, which serves the purpose of modeling in casting. It is generally made by mixing molding materials such as raw sand for casting, molding sand binder and auxiliary additives in a certain proportion. According to the different binders used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/22
CPCB22C1/224B22C1/2273
Inventor 何祥炎孙国政周万波
Owner ANHUI SOLID FOUNDRY CO LTD
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