A continuous production method and production device of nano-zinc phosphate antirust pigment

A technology of anti-rust pigments and production methods, applied in anti-corrosion coatings, inorganic pigment treatment, chemical instruments and methods, etc., can solve the problems of high cost, no industrialized production equipment, and no industrialized production, and achieve low production costs. The effect of product quality and product stability, good economic benefits and social benefits

Inactive Publication Date: 2017-07-25
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the above-mentioned preparation methods or processes has been industrialized, because there is no matching industrialized production equipment, or the cost is too high

Method used

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  • A continuous production method and production device of nano-zinc phosphate antirust pigment
  • A continuous production method and production device of nano-zinc phosphate antirust pigment

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] A continuous production method of nano-zinc phosphate antirust pigment, comprising the following steps:

[0045] (1) Dispersion: Weigh 99.7% zinc oxide by indirect method, and prepare zinc oxide solution with water at a weight ratio of 1:9; take 10,000 parts of zinc oxide solution, 11 parts of dispersant, and add them to the vertical sand mill at the same time , grinding zinc oxide to D98≦1 μm to obtain a zinc oxide dispersion; the dispersant 1 is commercially available Silok-7455;

[0046] (2) Acid preparation: add industrial phosphoric acid and deionized water into the dilution tank, stir, and prepare a phosphoric acid solution with a concentration of 10%;

[0047] (3) Add 2 parts of CTAB, 3 parts of Span-40, 1300 parts of deionized water, 30 parts of cyclohexylamine, and 15 parts of copolymer of acrylic acid and butyl acrylate into the reaction kettle continuously and uniformly. The zinc dispersion liquid and the phosphoric acid solution are continuously and uniform...

Embodiment 2

[0055] A continuous production method of nano-zinc phosphate antirust pigment, comprising the following steps:

[0056] (1) Dispersion: Weigh 99.7% zinc oxide by indirect method, and prepare zinc oxide solution with water at a weight ratio of 4:6; take 10,000 parts of zinc oxide solution and 18 parts of dispersant, and add them to the vertical sand mill at the same time , grinding zinc oxide to D98≦1 μm to obtain a zinc oxide dispersion; the dispersant 1 is commercially available Momentive 3013 dispersant;

[0057] (2) Acid preparation: add industrial phosphoric acid and deionized water into the dilution tank, stir, and prepare a phosphoric acid solution with a concentration of 30%;

[0058] (3) Add 20 parts of Tween, 10 parts of Pingpingjia, 1900 parts of deionized water, 50 parts of onion film, and 50 parts of copolymer of acrylic acid and butyl acrylate into the reaction kettle continuously and uniformly. The dispersion liquid and the phosphoric acid solution are continuou...

Embodiment 3

[0066] A continuous production method of nano-zinc phosphate antirust pigment, comprising the following steps:

[0067] (1) Dispersion: Weigh 99.7% zinc oxide by indirect method, and prepare zinc oxide solution with water at a weight ratio of 2:7; take 10,000 parts of zinc oxide solution and 15 parts of dispersant, and add them to the vertical sand mill at the same time , grinding zinc oxide to D98≦1 μm to obtain a zinc oxide dispersion; the dispersant 1 is commercially available Momentive 4065 dispersant;

[0068] (2) Acid preparation: add industrial phosphoric acid and deionized water into the dilution tank, stir, and prepare a phosphoric acid solution with a concentration of 20%;

[0069] (3) Add 5 parts of sodium dodecylbenzenesulfonate, 10 parts of sodium dodecyl sulfate, 1600 parts of deionized water, 40 parts of PEG-200040 parts, and 25 parts of copolymer of acrylic acid and butyl acrylate to the reaction Add the zinc oxide dispersion and phosphoric acid solution to th...

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Abstract

The invention provides a nanometer zinc phosphate antirust pigment continuous production method and device. Zinc oxide and phosphoric acid are used as raw materials, under the synergistic effect of multiple auxiliaries such as a template agent and a dispersing agent, the contact reaction surface between zinc oxide and phosphoric acid is continuously updated by means of three-level serial grinding, particle shape and size control is conducted, and nanometer zinc phosphate antirust pigments with a uniform particle size are obtained by means of dehydration, spray drying, modification and smashing. Full-automatic control is adopted, production is convenient and fast, the obtained nanometer zinc phosphate antirust pigments are uniform in particle size and stable in product quality, and the antirust performance is improved by 20% compared with existing imported zinc phosphate.

Description

technical field [0001] The invention belongs to the technical field of antirust pigment preparation, and relates to a preparation method of phosphate antirust pigment, in particular to a continuous production method and production device of nanometer zinc phosphate antirust pigment. [0002] Background technique: [0003] Zinc phosphate has been promoted and used in the paint industry for more than 20 years as a substitute for traditional toxic chemical antirust pigments such as red lead and zinc chrome yellow, but there are still technical deficiencies, such as: weak early antirust ability, coarse particles, poor dispersion, etc. . [0004] In order to improve the performance of zinc phosphate and improve its antirust ability, the following two methods are currently used: [0005] The first approach is through the addition of other metal phosphates. CN101081945A discloses a composite zinc phosphate antirust pigment, which contains the following components in weight percent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/08C09D163/00C09D7/12C09C1/02C09C3/04C09C3/10
CPCC01P2004/60C01P2006/90C08K2201/011C09C1/02C09C3/006C09C3/04C09C3/10C09D5/084C09D7/61C09D163/00C08L61/20C08K13/06C08K9/04C08K2003/328C08K2003/2241C08K3/34
Inventor 袁爱群黄云龙陈峰张方志周泽广黄增尉
Owner GUANGXI UNIV FOR NATITIES
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