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Preparation and application methods of antirust and antibacterial aluminum triphosphate pigment

A technology of aluminum tripolyphosphate and aluminum tripolyphosphate powder, which is applied in anti-corrosion coatings, polyester coatings, anti-fouling/underwater coatings, etc., and can solve the problems of low sterilization rate, poor heat resistance, and small quantity

Inactive Publication Date: 2018-01-19
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, organic antibacterial agents have poor heat resistance, are easily hydrolyzed, and have a short validity period.
Natural antibacterial agents are mainly extracted from natural plants, such as chitin, mustard, castor oil, and horseradish. They are easy to use, but have limited antibacterial effects, poor heat resistance, and low bactericidal rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation steps of antirust and antibacterial aluminum tripolyphosphate pigment are as follows:

[0032] (1) Dissolve 10g of sodium tripolyphosphate and 5g of aluminum sulfate in 1000g of water respectively, then add 3.2g of ammonia water (concentration 25%) into the aqueous solution of sodium tripolyphosphate, and mix ammonia water and sodium tripolyphosphate under high-speed stirring The mixed solution is added to the aluminum sulfate aqueous solution to form an aluminum tripolyphosphate gel;

[0033] (2) Washing and separating the aluminum tripolyphosphate gel three times, freeze-drying, and grinding to obtain aluminum tripolyphosphate powder;

[0034] (3) Disperse 13g of aluminum tripolyphosphate powder into water, adjust the pH value to 12 with sodium hydroxide solution, control the solution temperature at 40°C, stir for 4 hours, filter with a Buchner funnel, wash with distilled water until the pH value of the filtrate At 7.3, then dry the water at 120°C to ...

Embodiment 2

[0051] The preparation steps of antirust and antibacterial aluminum tripolyphosphate pigment are as follows:

[0052] (1) Dissolve 11g of sodium tripolyphosphate and 6g of aluminum sulfate in 1000g of water respectively, then add 3.2g of ammonia water (concentration 25%) into the aqueous solution of sodium tripolyphosphate, and mix ammonia water and sodium tripolyphosphate under high-speed stirring The mixed solution is added to the aluminum sulfate aqueous solution to form an aluminum tripolyphosphate gel;

[0053] (2) Washing and separating the aluminum tripolyphosphate gel three times, freeze-drying, and grinding to obtain aluminum tripolyphosphate powder;

[0054] (3) Disperse 14g of aluminum tripolyphosphate powder into water, adjust the pH value to 12 with sodium hydroxide solution, control the solution temperature at 50°C, stir for 6 hours, filter with a Buchner funnel, wash with distilled water until the pH value of the filtrate At 7.3, then dry the water at 120°C to ...

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Abstract

The invention provides antirust and antibacterial aluminum triphosphate pigment and a preparation method thereof. The preparation method comprises the following steps: (1) preparing aluminum triphosphate sol; (2) preparing aluminum triphosphate powder from the sol; (3) activating the aluminum triphosphate powder with sodium hydroxide; (4) loading silver ions; (5) performing surface treatment of the antirust and antibacterial aluminum triphosphate with a silane coupling agent. The pigment can be applied to ultraviolet curing coating; the formula of the coating comprises the following components: 4-10% of epoxy acrylate, 15-25% of polyester acrylate, 15-27% of monofunctional (methyl) acrylate, 25-35% of bifunctional (methyl) acrylate, 5-15% of trifunctional (methyl) acrylate, 3-7% of adhesion promoter, 4-15% of modified aluminum phosphate, 0.5-2.5% of antirust and antibacterial aluminum triphosphate, 0.5-1.5% of triethanolamine, 1-3% of diphenylketone and 3-6% of photoinitiator.

Description

technical field [0001] The invention relates to an antirust and antibacterial pigment, in particular to the preparation of an antirust and antibacterial aluminum tripolyphosphate pigment and a method for applying it to prepare ultraviolet light curing paint. Background technique [0002] Metal corrosion is caused by the damage of metal materials by the surrounding medium, among which metal rust is the most common form of corrosion. During corrosion, a chemical or electrochemical multiphase reaction occurs at the interface between the metal and the medium, and the metal is oxidized into a compound, thereby significantly reducing the mechanical properties of the metal material such as strength, plasticity, and toughness, destroying the geometry of the metal component, and increasing the number of components. The wear and tear between them will deteriorate the physical properties such as electricity and optics, shorten the service life of the equipment, and even cause catastrop...

Claims

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Application Information

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IPC IPC(8): C09D5/08C09D5/14C09D167/06C09D163/10
Inventor 宋伟强杨岚涛郑红娟赵志伟
Owner HENAN UNIVERSITY OF TECHNOLOGY
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