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Preparation method of low shrink air dry vinyl ester heavy-duty anti-corrosive paint

A vinyl ester, low shrinkage gas technology, used in anti-corrosion coatings, epoxy coatings, coatings, etc., can solve the problems of high curing shrinkage and poor air drying

Inactive Publication Date: 2010-06-30
中昊北方涂料工业研究设计院有限公司
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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 synthesize a low-shrinkage, air-drying resin by introducing a highly air-drying adduct group, and solve the problem of poor air-drying property and large curing shrinkage of the original vinyl ester glass flake heavy-duty anti-corrosion coating. disadvantages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: This example demonstrates the preparation method of the low-shrinkage air-drying vinyl ester heavy-duty anti-corrosion coating of the present invention.

[0044] (1) Add 38.4kg of maleic anhydride, 4kg of water and 57.6kg of dicyclopentadiene into the reactor, raise the temperature to 80-100°C and keep it warm for 1 hour, then continue to raise the temperature to 120-140°C, keep it warm until the acid value reaches a suitable value , DCPD maleic acid ester can be obtained.

[0045] (2) Add 23.5kg of DCPD cisic acid ester, 39.6kg of epoxy resin, 0.3kg of catalyst and 0.1kg of polymerization inhibitor into the reaction kettle, stir and dissolve, heat up to 80°C, add 7.7kg of methacrylic acid, and heat up to 110-120°C , heat preservation reaction until the acid value reaches a suitable value, lower the temperature to 80 ° C, add 28.8 kg of styrene dilute, and stir well to obtain vinyl ester resin.

[0046] (3) Add 37.5kg of vinyl ester resin, 4.7kg of titanium ...

Embodiment 2

[0051] Serial number Material name Embodiment 2 Embodiment 3

[0052] 1 Maleic anhydride 37.3 36.2

[0053] 2 water 6.8 9.6

[0054] 3 Dicyclopentadiene 55.9 54.2

[0055] (2) Formula of vinyl ester resin: Unit: kg

Embodiment 3

[0057] 1 DCPD cisate 21.6 19.7

[0058] 2 epoxy resin 36.4 33.2

[0059] 3 catalyst 0.3 0.2

[0060] 4 Inhibitor 0.1 0

[0061]5 Methacrylic acid 7.0 6.4

[0062] 6 Styrene 34.6 40.5

[0063] (3) Formula of component A of low-shrinkage air-drying vinyl ester heavy-duty anti-corrosion coating: unit: kg

[0064] Serial number Material name Embodiment 2 Embodiment 3

[0065] 1 Vinyl ester resin 40.2 42.9

[0066] 2 Titanium dioxide 5.1 5.4

[0067] 3 Talc 5.0 5.4

[0068] 4 Mother powder 3.7 3.9

[0069] 5 glass flakes 26.8 28.6

[0070] 6 Silica 3.4 3.6

[0071] 7 Rheology modifier 1.7 1.8

[0072] 8 Defoamer 1.4 1.4

[0073] 9 Styrene 12.7 7.0

[0074] (4) Formulation of component B of low-shrinkage air-drying vinyl ester heavy-duty anti-corrosion coating: unit: kg

[0075] Serial number Material name Embodiment 2 Embodiment 3

[0076] 1 Primer 53.4 66.7

[0077] 2 Plasticizer 31.1 22.2

[0078] 3 accelerator 15.5 11.1

[0079] (5) Before use, mix component A ...

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PUM

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Abstract

The invention discloses a preparation method of low shrink air dry vinyl ester heavy-duty anti-corrosive paint. The anti-corrosive paint comprises a first component of the dry vinyl ester heavy-duty anti-corrosive paint and a second component of the dry vinyl ester heavy-duty anti-corrosive paint, wherein the first component of the dry vinyl ester heavy-duty anti-corrosive pain t comprises vinyl ester resin, titanium pigment, French chalk, mica powder, gas phase silicon dioxide, styrene, BYK-410, BYK-555, glass scales and like, the second component of the dry vinyl ester heavy-duty anti-corrosive paint comprises dibutyl phthalate, methylethyl ketone peroxide and cobalt naphthenate. The defects of low air dry capability and high cure shrinkage of the traditional vinyl ester glass scale heavy-duty anti-corrosive paint are solved by introducing the air dry addition product group to synthesize low shrink air dry resin, and the paint has the advantages of high media penetrability resistance, abrasive resistance and the like. The low shrink air dry vinyl ester heavy-duty anti-corrosive paint has the characteristics of simple preparation process, abundant raw materials and stable performance, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a heavy-duty anti-corrosion coating, in particular to a low-shrinkage air-drying vinyl ester heavy-duty anti-corrosion coating for chemical pipelines. Background technique [0002] Vinyl ester resin is a free radical-initiated thermosetting resin prepared by the reaction of epoxy resin and methacrylic acid. Its molecular ends contain vinyl groups, and the middle skeleton is an epoxy resin structure, so it has excellent epoxy resin properties. Excellent mechanical properties, corrosion resistance, high temperature resistance, and easy fluidity and rapid curing of unsaturated polyester resin. The methacrylic acid group at the end of the molecular bond also improves its resistance to sunlight aging. [0003] Patent CN181719A Anti-corrosion vinyl ester resin glass flake coating for wet flue gas desulfurization equipment, the coating components are composed of vinyl ester, additives, pigments, glass flakes, thixotropic agent, fille...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/10C09D5/08
Inventor 李清材陈小庆崔定伟王国炜朱光荣赵虎森
Owner 中昊北方涂料工业研究设计院有限公司
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