Epoxy polyurethane anticorrosive coating capable of resisting light aging and preparation method

A technology of epoxy polyurethane and anti-corrosion coatings, which is applied in the direction of anti-corrosion coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of poor chemical medium resistance and poor light aging resistance, and achieve improved light aging resistance , Good shielding and isolation effect, low air permeability

Inactive Publication Date: 2009-12-09
CNPC RES INST OF ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Although the existing epoxy polyurethane anti-corrosion coatings have good chemical medium corrosion resistance, their light aging resistance is relatively poor. Although acrylic polyurethane and other external anticorrosion materials have excellent light aging resistance, their chemical medium resistance is relatively poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In the anti-light aging epoxy polyurethane anti-corrosion coating and the manufacturing method of the present invention, respectively add 1 weight part of bisphenol A type epoxy resin with a medium molecular weight softening point of 50-95 DEG C and 0.35 weight part of a glass transition point epoxy resin in a reaction kettle. Hydroxyl-containing polyester resin with a Tg of 40-80°C, 0.12 parts by weight of xylene, and 0.08 parts by weight of butyl acetate, heating the reactor to 100±5°C and dispersing at a high speed until dissolved, then adding the solution to a In the stainless steel bucket, subsequently add 0.12 parts by weight of rutile titanium dioxide, 0.008 parts by weight of UV-326 ultraviolet light absorber of Zibo Vanke Chemical Co., Ltd., 0.08 parts by weight of 325 mesh talcum powder, 0.08 parts by weight of 325 mesh Mica powder, 0.01 parts by weight of Afcona-2021 organosiloxane, 0.005 parts by weight of isopropyl tris (dioctyl pyrophosphate acyloxy) titana...

Embodiment 2

[0032] Embodiment 2: light-aging anti-aging epoxy polyurethane anticorrosion coating of the present invention and manufacture method In reactor, add respectively the xylene of 1 weight part epoxy resin, 0.33 weight part polyester resin, 0.15 weight part xylene, For 0.085 parts by weight of butyl acetate, heat the reaction kettle to 100±5°C and disperse at a high speed until dissolved, then add the solution into a stainless steel bucket, then add 0.12 parts by weight of titanium dioxide and 0.008 parts by weight of UV -360 UV absorbers, 0.09 parts by weight of talcum powder, 0.09 parts by weight of mica powder, 0.01 parts by weight of organosiloxane, 0.004 parts by weight of isopropyl tris (dioctyl pyrophosphate acyloxy) titanic acid After the ester and 0.007 parts by weight of polyorganocarboxylate were dispersed at high speed for 30 minutes, they were ground with a sand mill to obtain component A.

[0033] In another stainless steel tank, 1 part by weight of diphenylmethane d...

Embodiment 3

[0036] Embodiment 3: Anti-light aging epoxy polyurethane anti-corrosion coating of the present invention and manufacturing method are in reactor, add 1 weight part bisphenol A type epoxy resin respectively, the glass transition point Tg of 0.36 weight part is 40-80 ℃ Hydroxyl-containing polyester resin, 0.13 parts by weight of xylene, 0.09 parts by weight of butyl acetate, heating the reactor temperature to 100±5°C and dispersing at a high speed until dissolved, then adding the solution into a stainless steel bucket, and then Add 0.13 parts by weight of rutile titanium dioxide, 0.01 parts by weight of UV-326 ultraviolet light absorber, 0.085 parts by weight of 400 mesh talcum powder, 0.085 parts by weight of 400 mesh mica powder, and 0.015 parts by weight of Afcona-2021 organic silicon Oxane, 0.0045 parts by weight of isopropyl tris (dioctyl pyrophosphate acyloxy) titanate, 0.008 parts by weight of Afcona-5066 polyorganic carboxylate were dispersed at high speed for 30 minutes,...

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PUM

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Abstract

The invention discloses an epoxy polyurethane anticorrosive coating capable of resisting light aging and a preparation method; A component is prepared by mixing, stirring and grinding epoxy resin with medium molecular weight, hydroxyl-containing polyester resin, dimethylbenzene, butyl acetate, titanium pigment, ultraviolet absorber, talcum powder, mica powder, organosiloxane, isopropyl tri (dioctylpyrophosphato) titanate, poly-organic phosphate and the like; B component is prepared by mixing and stirring diphenylmethane diisocyanate and biuret. A component and B component are uniformly mixed according to weight ratio of 4:1 to be used. The epoxy polyurethane anticorrosive coating is capable of resisting light aging and has excellent corrosion resistance against acid, alkali and salt and salt fog resistance. The invention is external anticorrosive preferential coating for steel structures under severe environment such as chemical factories, refineries and the like.

Description

technical field [0001] The invention relates to an anti-light aging epoxy polyurethane anti-corrosion coating and a manufacturing method, which are used for anti-corrosion of steel structures under severe environmental conditions such as chemical plants, oil refineries and coastal areas. Background technique [0002] Although the existing epoxy polyurethane anti-corrosion coating has good chemical medium corrosion resistance, its anti-light aging performance is relatively poor, and external anti-corrosion materials such as acrylic polyurethane have excellent light aging resistance but poor chemical medium resistance. Contents of the invention [0003] The purpose of the present invention is to avoid the disadvantages of the above-mentioned prior art and provide an anti-corrosion paint with certain light aging resistance, acid resistance, alkali resistance and salt erosion resistance and a manufacturing method. [0004] Technical scheme adopted in the present invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D167/00C09D163/02C09D5/08C09D7/12
Inventor 杜建伟张丽萍郭晓军何鱼游王景山杜强杨长春梁镐
Owner CNPC RES INST OF ENG TECH
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