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Flexible epoxy anti-corrosion coating for solvent-free all-weather application

An anti-corrosion coating, flexible epoxy technology, applied in the field of coatings, can solve the problems such as hindering the full use of epoxy anti-corrosion coatings, incomplete curing, unfavorable construction, etc., achieving excellent adhesion, convenient construction, and overcoming poor toughness. Effect

Inactive Publication Date: 2016-08-24
SHANGHAI DATONG TABERNACLE NEW ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing epoxy resin anti-corrosion coatings have the problem of high rigidity and poor flexibility, and the curing agent used is often polyamide.
Therefore, the cured product cannot be completely cured at low temperature
[0003] If a new type of curing agent such as modified phenalkamine is used, although it can be cured at low temperature, it will be cured too quickly in hot summer weather, which is not conducive to construction, which hinders the full use of epoxy anti-corrosion coatings.

Method used

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  • Flexible epoxy anti-corrosion coating for solvent-free all-weather application
  • Flexible epoxy anti-corrosion coating for solvent-free all-weather application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Preparation of component A

[0032] 1.1 In a stainless steel bucket, first add 1 part by weight of E-44 epoxy resin; then add 0.35 parts by weight of glycidyl ester resin of carbon-12 dimer acid, 0.3 parts by weight of phenyl glycidyl ether and an appropriate amount of wet dispersion agent, silane coupling agent, dispersed at a speed of 400 rpm for 0.5 hours;

[0033] 1.2 Next, add 0.07 parts by weight of precipitated barium sulfate, 0.07 parts by weight of talc powder, 0.1 parts by weight of zinc phosphate under high-speed stirring, and then add 0.08 parts by weight of sericite powder for 800 rpm dispersion for 1 hour;

[0034] 1.3 Finally, stir again at a low speed of 300 rpm, add the rest of the additives, stir for 2 hours, and filter with an 80-mesh filter to obtain component A.

[0035] 2. Preparation of component B

[0036] In another stainless steel bucket, first add 1 part by weight of cardanol modified phenalkamine, 0.5 part by weight of aliphatic polyamid...

Embodiment 2-5

[0040] Its A component and B component preparation method are the same as embodiment 1, and formula is as follows:

[0041] The formula of embodiment 2-4 (by weight parts)

[0042]

[0043] *Appropriate amount of additives (wetting and dispersing agent, defoamer, silane coupling agent, leveling agent) used, Example 2, Example 3: A:B=10:7; Example 4: Example 5=10 :6.

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Abstract

The invention discloses a solvent-free flexible epoxy anticorrosive coating applicable to all-weather construction, comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 1 part of E-44 epoxy resin, 0.3-0.5 parts of C12-glycidyl ester-dimer acid, 0.2-0.4 parts of sericite powder and 0.15-0.3 parts of assistants; the component B comprises the following raw materials in parts by weight: 1 part of cardanol modified phenolic amine, 0.4-0.6 parts of aliphatic series polyamide and 0.1-0.3 parts of phenyl glycidyl ether. Meanwhile, a preparation method of the solvent-free flexible epoxy anticorrosive coating is disclosed. The coating disclosed by the invention has the advantages of excellent adhesive force, tenacity, chemical resistance and the like, the defect of poor tenacity of the conventional epoxy anticorrosive coating is overcome, and the coating has a long usage period within a wide temperature change range from a high temperature of over 35 DEG C in summer to a low temperature of -5 DEG C in winter. The solvent-free flexible epoxy anticorrosive coating is convenient to construct, rapid to cure, free of an organic solvent, and friendly to environment.

Description

technical field [0001] The invention relates to a coating, in particular to a solvent-free flexible epoxy anti-corrosion coating for all-weather construction. Background technique [0002] Most of the existing epoxy anti-corrosion coatings have the problem of high rigidity and poor flexibility, and the curing agent used is often polyamide. Therefore, the cured product cannot be completely cured at low temperature. [0003] If a new type of curing agent such as modified phenalkamine is used, although it can be cured at low temperature, it will be cured too quickly in hot summer weather, which is not conducive to construction, which hinders the full use of epoxy anti-corrosion coatings. [0004] Therefore, new requirements for improved epoxy anticorrosion coatings are removed. Contents of the invention [0005] The object of the present invention is to provide a solvent-free all-weather construction flexible epoxy anti-corrosion coating to overcome the above-mentioned shor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08
Inventor 杨宇奇顾勤英
Owner SHANGHAI DATONG TABERNACLE NEW ENERGY SAVING MATERIALS CO LTD