Special high-temperature-resistant and high-absorption coating for die-casting mold

A high-adsorption, die-casting mold technology, applied in epoxy resin coatings, coatings, etc., can solve the problems of reduced service life, shedding, cracking, etc., and achieve the effects of improved high temperature resistance, high dynamic viscosity, and high viscosity

Inactive Publication Date: 2018-01-30
李景春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The die-casting mold and other parts of the die-casting machine are in direct contact with the molten metal. Due to its high temperature, ordinary coatings will crack, swell, fall off, etc., and the service life will be greatly reduced.

Method used

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  • Special high-temperature-resistant and high-absorption coating for die-casting mold
  • Special high-temperature-resistant and high-absorption coating for die-casting mold
  • Special high-temperature-resistant and high-absorption coating for die-casting mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A special high-temperature-resistant high-adsorption coating for die-casting molds, which is composed of the following raw materials in parts by weight: 180 parts by weight of epoxy resin, 35 parts by weight of silicon-acrylic emulsion, 28 parts by weight of deionized water, and 12 parts by weight of polydimethylsiloxane Parts by weight, 8 parts by weight of dipentaerythritol, 6 parts by weight of composite inorganic pigments, 3 parts by weight of strontium chromate powder, 2 parts by weight of magnesium oxide powder, 12 parts by weight of graphite powder, 1 part by weight of yttrium oxide, 8 parts by weight of sodium citrate, 4 parts by weight of melamine phosphate, 8 parts by weight of flaky mica powder, 3 parts by weight of calcium formate, 4 parts by weight of nano-silicon carbide powder, 1 part by weight of rare earth cerium fluoride, 3 parts by weight of curing agent, mixed lead-free boron glass powder 6 parts by weight, 4 parts by weight of adhesion promoter, 3 pa...

Embodiment 2

[0036] A special high-temperature-resistant high-adsorption coating for die-casting molds, consisting of the following raw materials in parts by weight: 165 parts by weight of epoxy resin, 45 parts by weight of silicon-acrylic emulsion, 33 parts by weight of deionized water, and 12 parts by weight of polydimethylsiloxane Parts by weight, 6 parts by weight of dipentaerythritol, 6 parts by weight of composite inorganic pigment, 3 parts by weight of strontium chromate powder, 2 parts by weight of magnesium oxide powder, 12 parts by weight of graphite powder, 1 part by weight of yttrium oxide, 7 parts by weight of sodium citrate, 3 parts by weight of melamine phosphate, 5 parts by weight of flake mica powder, 4 parts by weight of calcium formate, 4 parts by weight of nano silicon carbide powder, 2 parts by weight of rare earth cerium fluoride, 4 parts by weight of curing agent, 5 parts by weight of adhesion promoter , 4 parts by weight of viscosity adjusting solvent, 3 parts by wei...

Embodiment 3

[0046] A method for preparing a special high-temperature-resistant high-adsorption coating for a die-casting mold, comprising the following steps:

[0047] Step1, pour epoxy resin, silicone acrylic emulsion, deionized water, graphite powder, yttrium oxide, sodium citrate, melamine phosphate, flake mica powder, dispersant, leveling agent, coupling agent and defoamer into Dispersion cylinder, stir and mix at a high speed under the condition of 150-180°C, the stirring speed is 400-500 rpm, after mixing evenly, pour the mixture into the container and put it in a refrigerator at 4°C to stand until the temperature of the mixture Stable, then take out the mixed material and pour it into the cleaned and dried dispersion tank again, then add polydimethylsiloxane, dipentaerythritol, composite inorganic pigment, strontium chromate powder and magnesium oxide powder, at 200-250 ° C, Stir and react for 1-1.5 hours under the condition of 500-550 rpm;

[0048] Step2, pour the mixed material ...

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Abstract

The invention discloses a special high-temperature-resistant and high-absorption coating for a die-casting mold. The special high-temperature-resistant and high-absorption coating is prepared from thefollowing materials of: epoxy resin, silicone acrylic emulsion, deionized water, polydimethylsiloxane, dipentaerythritol, compound inorganic pigment, strontium chromate powder, magnesium oxide powder, graphite powder, yttrium oxide, sodium citrate, melamine phosphate, lamellar mica powder, calcium formate, nano silicon carbide powder, rare-earth cerium fluoride, curing agent, adhesion promoter, viscosity regulating solvent, dispersing agent, leveling agent, coupling agent, defoaming agent and additive. The special high-temperature-resistant and high-absorption coating disclosed by the invention has the characteristics of good high-temperature resistance, ageing resistance and fatigue resistance, also has the advantages of high viscosity and crack resistance and the like; in addition, thecoating film is dense and neat and the adhesion is excellent.

Description

technical field [0001] The invention relates to the technical field of die-casting machines, in particular to a special high-temperature-resistant high-adsorption coating for die-casting molds. Background technique [0002] The die-casting machine is a series of industrial casting machines that hydraulically inject molten metal into the mold for cooling and forming under pressure, and obtain solid metal castings after the mold is opened. With the advancement of science and technology and industrial production, especially with the development of industries such as automobiles, motorcycles and household appliances, and starting from energy saving and saving raw materials, die-casting technology has achieved extremely rapid development. [0003] The die-casting mold and other parts of the die-casting machine are in direct contact with the molten metal. Due to its high temperature, ordinary coatings will crack, swell, fall off, etc., and the service life will be greatly reduced....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D133/04C09D7/61
Inventor 李景春
Owner 李景春
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