Modified alcohol-base foundry coating and preparation method thereof

A casting coating, alcohol-based technology, applied in casting molding equipment, coatings, molds, etc., can solve the problems of poor suspension of attapulgite and low suspension of alcohol-based coatings, and improve the suspension and bond strength. No hardening, smooth and dense coating

Inactive Publication Date: 2014-02-19
WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the allocation of alcohol-based casting coatings with high viscosity, high suspensibility, and good fluidity has always been a hot spot for those skilled in the art. Because attapulgite, that is, attapulgite clay, is a clay with attapulgite as the main component, according to The viscosity characteristics of attapulgite, in the prior art, attapulgite is applied in the alcohol base coating, although the viscosity of the alcohol base coating that improves to a certain extent, there are following two shortcoming: one, attapulgite is not suspendable in ethanol Well, the suspending property of the prepared alcohol-based paint is not high; 2. The prepared alcohol-based paint is easy to harden and form "dead sediment" during long-term storage

Method used

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Examples

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Comparison scheme
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preparation example Construction

[0018] A preparation method for a modified alcohol-based casting coating, comprising the steps of:

[0019] 1) Prepare the above-mentioned modified alcohol-based casting coating;

[0020] 2) Disperse the gas-phase nano additives, phenolic resin, polyvinyl butyrate and additives into the zircon powder, add water to fully dissolve the solution, then disperse the suspending agent into the solution, and finally add the defoamer to carry out Stir to form a colloid; the dispersion time of the suspending agent is 15 minutes to ensure good thixotropy and suspension; the stirring speed is 1000r / min, and the stirring time is 1h;

[0021] 3) Put the colloid in the drum of the ball mill, and discharge it after grinding.

Embodiment 1

[0023] A modified alcohol-based casting coating, which comprises 75% zircon powder by weight, 1% gas-phase nano additives, 2% polyvinyl butyrate, 4% suspending agent, and 1% phenolic resin , and the rest are additives, and then take 0.01% of the mass percentage of the modified alcohol-based casting coating as a defoamer for preparation, and the defoamer is n-butanol. In the present invention, the suspending agent is uniformly mixed with 40% TM-MA composite reagent and 10% alcohol by weight ratio, and 50% attapulgite is added to the ultrasonic generator, stirred and shaken for 1h and left to stand for 30min, after 70 °C dried. In the modified alcohol-based casting coating prepared above, disperse the gas-phase nano additives, phenolic resin, polyvinyl butyrate and additives into the zircon powder, add water to fully dissolve to obtain a solution, and then disperse the suspending agent into the solution After dispersing for 15 minutes, finally add defoamer and stir to form a co...

Embodiment 2

[0025] A modified alcohol-based casting coating, which comprises 85% zircon powder by weight, 2% gas-phase nano additives, 3% polyvinyl butyrate, 6% suspending agent, and 2% phenolic resin , and the rest are additives, and then take 0.02% of the mass percentage of the modified alcohol-based casting coating as a defoamer for preparation, and the defoamer is n-amyl alcohol. In the present invention, the suspending agent is uniformly mixed with 40% TM-MA composite reagent and 10% alcohol by weight ratio, and 50% attapulgite is added to the ultrasonic generator, stirred and shaken for 1h and left to stand for 30min, after 70 °C dried. In the modified alcohol-based casting coating prepared above, disperse the gas-phase nano additives, phenolic resin, polyvinyl butyrate and additives into the zircon powder, add water to fully dissolve to obtain a solution, and then disperse the suspending agent into the solution After dispersing for 15 minutes, finally add defoamer and stir to form...

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PUM

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Abstract

The invention relates to a modified alcohol-base foundry coating which comprises the components in percent by weight: 75%-85% of zirconium silicate powder, 1%-2% of a gas-phase auxiliary agent, 2%-3% of polyvinyl butyral, 4%-6% of a suspending agent, 1%-2% of phenolic resin, and the balance additive, wherein the suspending agent is prepared by: uniformly mixing 40% by weight of a TM-MA composite agent and 10% by weight of alcohol, adding 50% by weight of attapulgite, putting in a supersonic generator, stirring and shaking for 1 h, standing for 30 min, and drying at 70 DEG C. According to the modified alcohol-base foundry coating provided by the invention, modified attapulgite is employed for preparation of the suspending agent, and does not form compact precipitation after placed for a relatively long time when the modified attapulgite is suspended in alcohol; and the addition of an anti-foaming agent helps to eliminate bubbles generated during stirring, so that the wettability of the alcohol-base coating is improved, the suspensibility, the thixotropy and the coating effect of the alcohol-base coating is substantially improved, and the coating layer is smooth, compact and high in bonding strength, and has no hardening.

Description

technical field [0001] The invention relates to a casting coating, in particular to a modified alcohol-based casting coating and a preparation method thereof. Background technique [0002] Because alcohol-based coatings are resistant to high temperature, erosion, and bursting, compared with traditional water and coatings that dry slowly, have a long production cycle and consume a lot of energy, alcohol-based coatings are becoming more and more widely used. Therefore, the allocation of alcohol-based casting coatings with high viscosity, high suspensibility and good fluidity has always been a hot spot for those skilled in the art. Because attapulgite is attapulgite clay, a clay with attapulgite as the main component, according to The viscosity characteristics of attapulgite, in the prior art, attapulgite is applied in the alcohol-based coating, although the viscosity of the alcohol-based coating that improves to a certain extent, there are following two shortcoming: one, a...

Claims

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Application Information

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IPC IPC(8): B22C3/00
Inventor 浦巧生
Owner WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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