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Attapulgite suspending agent for casting alcohol-based coating and preparation method thereof

A technology of suspending agent and attapulgite, which is used in casting and molding equipment, coatings, molds, etc., can solve the problems of unsatisfactory suspension and high viscosity of refractory aggregates, improve suspension stability and anti-compacting performance, improve Coating performance, great application prospects and practical effects

Inactive Publication Date: 2009-12-23
SHENYANG RES INST OF FOUNDRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In short, my country has carried out many experimental studies on attapulgite clay, and it has been well applied in the adsorption and purification of industrial sewage. However, when it is applied to the suspension agent of casting alcohol-based coatings, it still has high viscosity and high density. Due to the unsatisfactory suspension of refractory aggregates and other problems, it has not been widely used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing attapulgite suspending agent for casting alcohol-based coatings is to add 200 milliliters of 2mol / L hydrochloric acid to 50 grams of attapulgite, ultrasonically disperse and treat it for 20 minutes, then wash with deionized water until there is no chloride ion, and then centrifugally dehydrate , dried and crushed.

[0029] Add 5 grams of the above-mentioned attapulgite into 50 ml of water, and disperse by ultrasonic wave for 10 minutes to form a uniformly dispersed attapulgite suspension.

[0030] Add inorganic nanoparticles according to the ratio of acidified attapulgite and inorganic nanoparticles to 50 / 3, ultrasonically disperse for 10 minutes, centrifugally dehydrate, dry and pulverize to obtain attapulgite suspending agent for alcohol-based coatings.

[0031] The suspensibility of the alcohol-based zircon powder coating prepared with the attapulgite modified by the above-mentioned nanomaterials reaches 96% within 24 hours.

Embodiment 2

[0033] A method for preparing attapulgite suspending agent for casting alcohol-based coatings is to add 200 milliliters of 1mol / L sulfuric acid to 50 grams of attapulgite, ultrasonically disperse and treat it for 20 minutes, then wash with deionized water until there is no chloride ion, and then centrifugally dehydrate , dried and crushed.

[0034] Add 5 grams of the above-mentioned attapulgite into 50 ml of water, and disperse by ultrasonic wave for 10 minutes to form a uniformly dispersed attapulgite suspension.

[0035] Add inorganic nanoparticles according to the ratio of acidified attapulgite and inorganic nanoparticles at a ratio of 50 / 1, ultrasonically disperse for 10 minutes, centrifugally dehydrate, dry and pulverize to obtain attapulgite suspending agent for alcohol-based coatings.

[0036] The suspensibility of the alcohol-based zircon powder coating prepared with the attapulgite modified by the above-mentioned nanomaterials reaches 93% in 24 hours.

Embodiment 3

[0038] A method for preparing attapulgite suspending agent for casting alcohol-based coatings is to add 200 milliliters of 1mol / L hydrochloric acid to 50 grams of attapulgite, ultrasonically disperse and treat it for 20 minutes, then wash with deionized water until there is no chloride ion, and then centrifugally dehydrate , dried and crushed.

[0039] Add 5 grams of the above-mentioned attapulgite into 50 ml of water, and disperse by ultrasonic wave for 10 minutes to form a uniformly dispersed attapulgite suspension.

[0040] Then add inorganic nanoparticles according to the ratio of acidified attapulgite and inorganic nanoparticles at a ratio of 10 / 1, ultrasonically disperse for 10 minutes, centrifugally dehydrate, dry and pulverize to obtain attapulgite suspending agent for alcohol-based coatings.

[0041] The suspensibility of the alcohol-based zircon powder coating prepared with the attapulgite modified by the above-mentioned nanomaterials reaches 99% within 24 hours.

...

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Abstract

The invention relates to an attapulgite suspending agent for casting alcohol-based coating, which is formed by coating inorganic nanometer grains on attapulgite grains containing 80-85 percent of magnesium aluminum silicate according to the mass percent, wherein the inorganic nanometer grains are nanometer Al2O3, nanometer SiO 2 or nanometer TiO2, the grain diameter is 10-20nm, and the specific surface area is 200-300m / g. The inorganic nanometer grains are added into a purified and acidized attapulgite system for modification so as to lead the organic nanometer to be covered around the attapulgite, on the one hand, the invention can change the surface state of the attapulgite to achieve the purpose of dewatering and affinity alcohol, on the other hand, can prevent highly dispersed attapulgite suspending agent grains from gathering and growing, thereby greatly improving the suspending stability and the harden-resisting property of the alcohol-based coating.

Description

technical field [0001] The invention relates to a nano-composite modification method of a suspending agent for alcohol-based paint, in particular to a nano-composite modification method of an attapulgite suspending agent in an alcohol-based paint used in the foundry industry. Background technique [0002] With the rapid development of my country's economic construction in recent years, the output, quality and export volume of castings have increased year by year, and the requirements for the amount and quality of casting coatings are also getting higher and higher. Compared with water-based coatings, alcohol-based coatings are widely used in my country because they only need to be ignited to dry or volatilize to dry, and have the advantages of fast drying speed, high production efficiency, energy saving and shortened production cycle. The annual consumption of paint can reach 200,000 to 250,000 tons, and alcohol-based paint accounts for 60 to 70% of the total paint consumptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 李玲吕德志李汉锟刘加军
Owner SHENYANG RES INST OF FOUNDRY
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