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Anti-corrosion waterproof coating for evanescent mode

A fire-resistant coating and corrosion-resistant technology, applied in coatings, casting molding equipment, casting molds, etc., can solve the problems of easy cracking of coatings and poor corrosion resistance, and achieve good flame retardant effect, good adhesion, and not easy to age Effect

Inactive Publication Date: 2015-06-10
QINGDAO DAYUN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a corrosion-resistant fireproof coating for lost foam, which solves the technical problems of poor environmental corrosion resistance and easy cracking of the coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A corrosion-resistant and fireproof coating for lost foam is characterized in that the components of the raw materials are composed as follows in parts by weight:

[0018] 30 parts of ethylene-vinyl acetate copolymer, 20 parts of polyisocyanate, 18 parts of bisphenol A epoxy resin, 8 parts of polyphosphate amine, 8 parts of perchloroethylene resin, 8 parts of pentaerythritol, methylene dimethyl naphthalene sulfonic acid 2 parts of sodium, 0.6 parts of melamine, 4 parts of methyl cellulose, 2 parts of preservatives composed of sorbic acid, borax and ethylenediamine tetraacetic acid according to the mass ratio of 2:1:1, 1.5 parts of antimony trioxide, titanium dioxide and 3 parts of filler composed of talcum powder in a weight ratio of 1:1, 25 parts of solvent composed of ethyl acetate and ethylene glycol in a weight ratio of 1:1.

Embodiment 2

[0020] A corrosion-resistant and fireproof coating for lost foam is characterized in that the components of the raw materials are composed as follows in parts by weight:

[0021] 35 parts of ethylene-vinyl acetate copolymer, 25 parts of polyisocyanate, 20 parts of bisphenol A type epoxy resin, 10 parts of polyphosphate amine, 10 parts of perchlorethylene resin, 10 parts of pentaerythritol, methylene dimethyl naphthalene sulfonic acid 3 parts of sodium, 0.7 parts of melamine, 5 parts of methyl cellulose, 3 parts of preservatives composed of sorbic acid, borax and ethylenediamine tetraacetic acid according to the mass ratio of 2:1:1, 1.8 parts of antimony trioxide, titanium dioxide and 4 parts of fillers composed of talc powder at a weight ratio of 1:1, and 30 parts of solvents composed of ethyl acetate and ethylene glycol at a weight ratio of 1:1.

Embodiment 3

[0023] A corrosion-resistant and fireproof coating for lost foam is characterized in that the components of the raw materials are composed as follows in parts by weight:

[0024] 40 parts of ethylene-vinyl acetate copolymer, 30 parts of polyisocyanate, 22 parts of bisphenol A type epoxy resin, 12 parts of polyphosphate amine, 12 parts of perchlorethylene resin, 15 parts of pentaerythritol, methylene dimethyl naphthalene sulfonic acid 4 parts of sodium, 0.8 parts of melamine, 6 parts of methyl cellulose, 4 parts of preservatives composed of sorbic acid, borax and ethylenediamine tetraacetic acid according to the mass ratio of 2:1:1, 2 parts of antimony trioxide, titanium dioxide and 5 parts of fillers composed of talc powder at a weight ratio of 1:1, and 35 parts of solvents composed of ethyl acetate and ethylene glycol at a weight ratio of 1:1.

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PUM

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Abstract

The invention discloses an anti-corrosion waterproof coating for an evanescent mode. The anti-corrosion waterproof coating is characterized by consisting of the following components in parts by weight: 30-40 parts of an ethylene-vinlacetate copolymer, 20-30 parts of polyisocyanate, 18-22 parts of bisphenol-A epoxy resin, 8-12 parts of ammonium polyphosphate, 8-12 parts of perchloro-ethylene resin, 8-15 parts of pentaerythritol, 2-4 parts of methylene dual-methyl naphthalene sulfonic acid sodium, 0.6-0.8 part of melamine, 4-6 parts of methyl cellulose, 2-4 parts of a preservative, 1.5-2 parts of antimonous oxide, 3-5 parts of a filler and 25-35 parts of a solvent. The prepared coating has an elastic effect, can effectively prevent a coating layer from being cracked, has a good flame retardant effect, and is high in adhesive force and excellent in corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a corrosion-resistant and fire-resistant coating for lost foam. Background technique [0002] The refractory coating used for lost foam casting is finally coated on the surface of the foam plastic model. Different types of foam plastics and different casting materials have different requirements for coating performance. In addition, foam plastic is airtight, has a low heat distortion temperature (about 70°C), has a low affinity for water, and has a large amount of gas after gasification. These characteristics determine that the refractory coating coated on its surface should meet the following technical requirements: The coating has a certain degree of air permeability. [0003] From the point of view of preventing sand sticking of castings, the surface of the foam model must be coated with paint, and the coating should be as dense as possible; but the dense coatin...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 陶岩华
Owner QINGDAO DAYUN MACHINERY
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