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Rare-earth sol modified composite zinc-aluminum low-temperature sintered coating slurry

A rare earth sol, low-temperature sintering technology, used in coatings, devices for coating liquids on surfaces, pre-treatment surfaces, etc. problems, to achieve good protection effect, low curing and sintering temperature, and good comprehensive mechanical properties.

Active Publication Date: 2010-11-10
CHONGQING HANGLI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in addition to the VOC pollution, the biggest problem with the application of the above-mentioned polymer adhesive materials is the weakening of the coating cathodic protection conduction current, which affects the electrochemical protection effect of the coating.

Method used

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  • Rare-earth sol modified composite zinc-aluminum low-temperature sintered coating slurry
  • Rare-earth sol modified composite zinc-aluminum low-temperature sintered coating slurry

Examples

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Effect test

Embodiment 1

[0023] A rare earth sol modified inorganic-organic composite material system is the zinc-aluminum low-temperature sintering coating slurry of the bonding material, and its raw materials and their weight percentages are shown in Table 1;

[0024] Table 1

[0025]

[0026] The manufacturing method of the coating slurry is as follows: firstly prepare the nano-rare earth cerium-zinc oxide-alumina ternary sol slurry; Each sol is prepared by hydrolysis, followed by mixing and dispersing in proportion; then adding silicone acrylic resin solution to continue dispersing and mixing, and then adding dispersant, zinc-aluminum flake powder, F-111 defoamer, product The coating rheology agent of model XY-501, antioxidant ammonium tungstate or metatungstic acid is added to deionized water and mixed, and dispersed at a speed of 300-500 rpm.

Embodiment 2～10

[0028] Adopt each raw material and its weight ratio relationship as described in Table 2, and adopt the preparation method identical with embodiment 1, prepare coating of the present invention; Wherein, auxiliary agent all selects other general commercially available products for use; Water can preferably adopt deionized water.

[0029] Table 2

[0030]

[0031] The invention uses rare earth cerium (Ce) sol to modify zinc oxide-alumina sol and silicone acrylic resin solution to form an inorganic-organic composite bonding material system. The three kinds of sols are obtained by hydrolysis; the silicone acrylic resin solution is water-soluble silicone acrylic resin or silicone acrylic resin emulsion, and fluoropropylene emulsion can also be used instead of silicone acrylic resin solution, water-soluble silicone acrylic resin, silicone acrylic resin emulsion or Fluorine-acrylic emulsions can be purchased in the market, such as HL-T15 water-soluble silicone acrylic resin, etc....

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Abstract

The invention provides rare-earth sol modified composite zinc-aluminum low-temperature sintered coating slurry. Zinc oxide-alumina sol is modified by using rare-earth sol and mixed with water-soluble silicon acrylic resin to form an inorganic / inorganic composite rare earth-zinc oxide-alumina ternary sol bonding material system. The slurry is prepared from the following raw materials in percentage by weight: 4 to 9 percent of nano rare-earth cerium sol, 25 to 35 percent of zinc oxide sol, 6 to 10 percent of alumina sol, 8 to 13 percent of water-soluble silicon acrylic resin, 0.05 to 0.1 percent of dispersant, 0.3 to 0.5 percent of rheological agent, 0.3 to 0.8 percent of antioxidant, 25 to 30 percent of laminar Zn-Sc alloy powder, 5 to 8 percent of laminar aluminum powder and the balance of deionized water. The slurry realizes the non-chromate Dacromet goal, and has the advantages of low curing and sintering temperature, bright and durable coating metal luster and good comprehensive mechanical property; and the integral process has the characteristics of lower carbon, more environmental protection, more energy conservation and the like.

Description

technical field [0001] The invention relates to a chromium-free dacromet slurry, in particular to a zinc-aluminum low-temperature sintered coating slurry with a rare earth sol modified inorganic-organic composite material system as an adhesive material and a preparation method thereof. Background technique [0002] Zinc and its alloy coating, as the surface cathodic protection layer technology of steel material structural parts, is one of the most important surface engineering technologies in the machine manufacturing industry. In order to protect the environment and avoid the waste acid (water) and waste gas pollution caused by the old galvanizing technology, in 1972 in the last century, a so-called DACRO technology of low-temperature sintered zinc and its alloy coating technology came out in the United States; This technology uses the inorganic salt solution of the transition group element chromium to add flake zinc powder to prepare a coating, which is applied to the surf...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/12B05D3/02
Inventor 赵航李朝丽
Owner CHONGQING HANGLI IND
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