Chemical-resistant epoxy inner lining coating and preparation method thereof

A chemical and epoxy-resistant technology, applied in the field of coatings, can solve the problems of irritating construction and painting personnel's health effects, the failure of the chemical resistance of the paint film, affecting the chemical resistance of the paint film, etc., to improve the shielding and barrier effect. , The effect of reducing internal stress and high-efficiency defoaming

Inactive Publication Date: 2019-03-22
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two technical problems in the epoxy and novolac epoxy coating products currently used for inner linings: (1) whether the common epoxy and novolac epoxy inner lining coatings can be fully cured under normal temperature conditions, many The inner lining coating cannot be fully cured under normal temperature conditions, and the paint film can only be cured after baking or heated with a hot electrolyte during storage of thermochemical media. Under post-curing conditions, these inner lining coatings cannot be fully cured, and the chemical resistance of the paint film will be seriously affected, resulting in premature failure; (2) The improvement of common epoxy and novolac epoxy inner lining coatings Non-toxic aliphatic amines and alicyclic amine curing agents contain a large amount

Method used

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  • Chemical-resistant epoxy inner lining coating and preparation method thereof
  • Chemical-resistant epoxy inner lining coating and preparation method thereof
  • Chemical-resistant epoxy inner lining coating and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0057] Example 1

[0058] The chemical-resistant epoxy lining paint of this embodiment includes component A and component B. The mass ratio of component A and component B is 4:1. The component A includes the following components by weight :29 parts of 830S bisphenol F epoxy resin, 9.5 parts of mixed solvent, 0.6 parts of wetting and dispersing agent BYK-110, 0.3 parts of defoaming agent BYK1790, 0.6 parts of thixotropic agent G-1958, 18 parts of titanium dioxide R-902, 20 parts of precipitated barium sulfate, 12 parts of quartz powder, 10 parts of 500 mesh sericite; The B component includes the following components by weight: 75 parts of fatty amine adduct, 22 parts of xylene, 2 parts of salicylic acid, 1 part of adhesion promoter KH-792; the mixed solvent is made by mixing xylene and propylene glycol methyl ether according to 4:1 parts by weight.

[0059] The preparation method of the chemical-resistant epoxy lining paint of this embodiment includes the following steps:

[0060] 1...

Example Embodiment

[0068] Example 2

[0069] The chemical-resistant epoxy lining paint of this embodiment includes component A and component B. The mass ratio of component A and component B is 3.5:1. The component A includes the following components by weight :32 parts of NPEF 170 bisphenol F epoxy resin, 7.5 parts of mixed solvent, 0.5 parts of wetting and dispersing agent BYK-110, 0.4 parts of defoaming agent BYK 1790, 0.5 parts of thixotropic agent G-1958, and titanium dioxide R-90215 parts , 0.1 part of carbon black, 17 parts of precipitated barium sulfate, 15 parts of quartz powder, 12 parts of 500 mesh sericite; The B component includes the following components by weight: 72 parts of fatty amine adduct, 24.8 parts of xylene, 1.7 parts of salicylic acid, 1.5 parts of adhesion promoter KH-792; the mixed solvent is made by mixing xylene and propylene glycol methyl ether in 4:1 parts by weight.

[0070] The preparation method of the chemical-resistant epoxy lining paint of this embodiment includes...

Example Embodiment

[0079] Example 3

[0080] The chemical-resistant epoxy lining paint of this embodiment includes component A and component B. The mass ratio of component A and component B is 3:1. The component A includes the following components by weight : 830S bisphenol F epoxy resin 36 parts, mixed solvent 6 parts, wetting and dispersing agent BYK-110 0.4 parts, defoamer BYK1790 0.5 parts, thixotropic agent G-1958 0.4 parts, titanium dioxide R-902 10.5 parts, Carbon black 0.2 parts, precipitated barium sulfate 14 parts, quartz powder 16 parts, 500 mesh sericite 16 parts; the B component includes the following components by weight: fatty amine adduct 70 parts, xylene 26.5 parts, water 1.5 parts of salicylic acid, KH-7922 parts of adhesion promoter; the mixed solvent is made by mixing xylene and propylene glycol methyl ether in 4:1 parts by weight.

[0081] The preparation method of the chemical-resistant epoxy lining paint of this embodiment includes the following steps:

[0082] 1) Mix 36 parts ...

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Abstract

The invention relates to the technical field of coatings, and particularly relates to a chemical-resistant epoxy inner lining coating and a preparation method thereof. The chemical-resistant epoxy inner lining coating provided by the invention is prepared from a component A and a component B, wherein the component A is prepared from the following components in parts by weight: 29 to 36 parts of bisphenol F epoxy resin, 0.4 to 0.6 part of a wetting dispersant, 0.3 to 0.5 part of an antifoaming agent, 0.4 to 0.6 part of a thixotropic agent, 10 to 18 parts of pigment, 30 to 32 parts of a filler a, 10 to 16 parts of a filler b and 6 to 10 parts of a mixed solvent; the component B is prepared from the following components in parts by weight: 70 to 75 parts of an aliphatic amine additive product, 22 to 27 parts of an organic solvent, 1.5 to 2 parts of a curing accelerator and 1 to 2 parts of an adhesion promoter; and the weight ratio of the component A to the component B is (3 to 4) to 1. The chemical-resistant epoxy inner lining coating provided by the invention is sufficiently cured in a normal-temperature condition, does not contain any active thinners or plasticizers, and has excellent chemical resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a chemical-resistant epoxy inner lining coating and a preparation method thereof. Background technique [0002] As we all know, cured epoxy resin has the characteristics of high adhesion, strong cohesion, small shrinkage, good electrical insulation, and excellent chemical resistance. Epoxy coatings developed with cured epoxy resin are widely used in anti-corrosion coatings Industrial fields, especially in the field of heavy anti-corrosion coatings. In practical applications, epoxy resins with different molecular weights can be selected as base materials according to the application field requirements of epoxy coatings, and different types of amine curing agents can also be selected. An important application of epoxy coatings is as an inner lining coating for storage tanks, containers, etc. [0003] Common epoxy lining coatings generally use novolac epoxy resin or liquid epoxy ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/61C08G59/50C08G59/68
CPCC08G59/504C08G59/68C08K2003/2241C08K2003/3045C09D163/00C09D7/61C09D7/70C08K3/34C08K7/00C08K3/30C08K3/22C08K3/36
Inventor 方健君徐科许洋廉兵杰王清海周丽王秀娟张伟丽李敏沈雪锋马胜军
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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