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Nanometer modified epoxy sealing paint and its prepn

A nano-modified, inorganic nano-material technology, applied in the field of nano-modified epoxy sealing coatings and their preparation, can solve the problems of polyurethane coating coatings being inferior to epoxy coatings, etc., achieve excellent resistance to salt water immersion, and improve anti-corrosion. Longevity, effect of high coating adhesion

Active Publication Date: 2007-01-03
JIANGSU CUMT DAZHENG SURFACE ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] CN 1450134A (Application No. 02109430.6) "A nano-sealed polyurethane coating and its preparation method" proposes a nano-sealed coating for Dacromet coating, oxide film, phosphating film, passivation film, chemical plating, and electroplating. Porous polyurethane coating, the coating has a good sealing effect and good leveling appearance, but the adhesion and chemical medium corrosion resistance of polyurethane coatings are not as good as epoxy coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1) Prepare nano slurry: first mix 27 parts of mixed solvent (xylene: n-butanol: propylene glycol ether = 5: 4: 1) and 40 parts of epoxy resin and stir evenly at a low speed, then add 2 parts of dispersant DP- 150 and 1 part of coupling agent KH-550, after being completely uniformly dispersed, add 30 parts of inorganic nanomaterials (nano-silicon oxide: nano-titanium oxide = 1: 1), stir for 15 minutes at a speed of 1200r / min, and then Use a high-shear emulsifying disperser to stir vigorously at a speed of 8000r / min for 90 minutes, then use an ultrasonic machine to disperse for 30 minutes, and finally use a sand mill to grind for 120 minutes. slurry.

[0057] 2) Preparation of nano-coating: first mix 28 parts of mixed solvent (xylene: n-butanol: propylene glycol ether = 5: 4: 1) and 50 parts of epoxy resin and stir evenly at a low speed, then add 0.5 parts of dispersing powder under stirring Agent DP-150, 0.4 parts of leveling agent CF-1016 and 0.1 part of defoamer CF-10...

Embodiment 2

[0059] 1) Preparation of nano slurry: first mix 27 parts of mixed solvent (xylene: n-butanol: bisglycidyl ether: = 6: 3: 1) and 48 parts of epoxy resin and stir evenly at a low speed, then add 2 parts of dispersing Agent DP-150, 1.5 parts of anti-sedimentation agent CP-88 and 1.5 parts of coupling agent KH-550, after being completely uniformly dispersed, add 20 parts of inorganic nanomaterials (nano-silicon oxide: nano-titanium oxide: nano-iron oxide red = 2:1:2), stirred for 5 minutes at a speed of 1000r / min, then vigorously stirred with a high-shear emulsifying disperser at a speed of 8000r / min for 90 minutes, then dispersed for 30 minutes with an ultrasonic machine, and finally Sand mill for 180 minutes, and then filter to make a nano-slurry in which the inorganic nano-material accounts for 20%.

[0060] 2) Preparation of nano-coating: first mix 34 parts of mixed solvent (xylene: n-butanol: bisglycidyl ether: = 6: 3: 1) and 40 parts of epoxy resin and stir evenly at a low s...

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PUM

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Abstract

The nanometer modified epoxy sealing paint is used mainly for hot spraying or other coating to seal various micropores. It consists of two components separated packed, the component A includes filming material, inorganic nanometer material, pigment, filler, assistant and diluent; and the component B includes curing agent and diluting solvent. It has the advantages of low viscosity, high permeability, high attachment force and excellent anticorrosive performance.

Description

technical field [0001] The invention relates to nano-coating technology and thermal spraying anti-corrosion technology, in particular to a nano-modified epoxy sealing coating with good sealing effect on thermal spraying coatings and other coatings and a preparation method thereof. Background technique [0002] Since thermal sprayed coatings generally have a porosity of 1% to 15% (not necessarily through pores), when the thermal sprayed coating is used as an anti-corrosion coating, it is necessary to seal the metal sprayed coating. The treatment process is also one of the contents that must be considered in coating design. The purpose of sealing the metal spray coating is to block the pores of the coating as much as possible and fill up the pits to prolong the service life of the coating. The most common sealing method is to seal the pores of thermally sprayed metal coatings with appropriate organic coatings. For aesthetic reasons or to prolong t...

Claims

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Application Information

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IPC IPC(8): C09D163/00
Inventor 易春龙安云岐
Owner JIANGSU CUMT DAZHENG SURFACE ENG TECH
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