Low-temperature-resistant solvent-free and thick-film type epoxy anticorrosive paint

An epoxy anti-corrosion coating, solvent-free technology, applied in the direction of anti-corrosion coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problems of coating peeling, small film thickness at one time, and large solvent content, etc., to achieve anti-corrosion Good crystallinity at low temperature, enhanced thixotropic stability, low viscosity and no solvation effect

Active Publication Date: 2017-02-22
蓝色海洋(天津)工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accumulation of corrosion products causes bubbling and cracking of the coating, which leads to the peeling off of the coating and the loss of anti-corrosion effect
In addition, due to the large solvent content and the small film thickness at one time,

Method used

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  • Low-temperature-resistant solvent-free and thick-film type epoxy anticorrosive paint
  • Low-temperature-resistant solvent-free and thick-film type epoxy anticorrosive paint
  • Low-temperature-resistant solvent-free and thick-film type epoxy anticorrosive paint

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] The epoxy anticorrosive coating of this embodiment is made by uniformly mixing component A and component B in a weight ratio of 3:1.

[0027] The A component contains the following ingredients: 100kg of composite toughened epoxy resin, 30kg of anti-sagging gel, 35kg of precipitated barium sulfate, 5kg of iron oxide red, 40kg of talc, 40kg of sericite, BYK-A530 defoamer 2kg, Germany BYK BYK-3550 leveling agent 2kg, Germany BYK-R605 thixotropic agent 3kg; the composite toughened epoxy resin is pre-blocked by the composite epoxy resin and the toughening agent polymerized phenolic phenol The polymer (Bayer XP2540) is mixed according to the weight ratio of 100:30; the anti-sag gel is made of silane coupling agent KH560, fumed silica, nano titanium dioxide and composite epoxy resin according to 8:8:20:100 The composite epoxy resin is made of bisphenol A epoxy resin E51, bisphenol F epoxy resin 170, 1,4-butanediol diglycidyl ether and polypropylene glycol diglyc...

Example Embodiment

[0040] Example 2

[0041] The epoxy anticorrosive coating of this embodiment is made by uniformly mixing component A and component B in a weight ratio of 4:1.

[0042] The A component contains the following components by weight: 100kg of composite toughened epoxy resin, 20kg of anti-sagging gel, 50kg of precipitated barium sulfate, 10kg of iron oxide red, 40kg of sericite, 30kg of talc, BYK-A530 4kg of defoamer, 4kg of BYK-3550 leveling agent in Germany; the composite toughened epoxy resin is a polypropylene glycol ether polyurethane prepolymer (Bayer XP2540) capped by a composite epoxy resin and a toughening agent polymerized phenol according to 100 : 10 by weight ratio; the anti-sagging gel is made by mixing silane coupling agent KH550, fumed silica, nano titanium dioxide and composite epoxy resin in a weight ratio of 8:5:30:100; The composite epoxy resins are all made by mixing bisphenol A epoxy resin E51 and bisphenol F epoxy resin 170 at a weight ratio of 70:30.

[0043] The B...

Example Embodiment

[0054] Example 3

[0055] The epoxy anticorrosive coating of this embodiment is made by uniformly mixing component A and component B in a weight ratio of 3:1.

[0056] The A component contains the following components by weight: 100kg of composite toughened epoxy resin, 50kg of anti-sagging gel, 50kg of precipitated barium sulfate, 50kg of talc, and 5kg of BYK-A530 defoamer from Germany; The tough epoxy resin is made by mixing a composite epoxy resin and a polypropylene glycol ether polyurethane prepolymer (Bayer XP2540) terminated by a toughening agent polymerized phenol according to a weight ratio of 100:50; the anti-sag gel is made of a silane coupling agent KH560, fumed silica, nano titanium dioxide and composite epoxy resin are mixed in a weight ratio of 10:10:5:100; the composite epoxy resin is made of bisphenol A type epoxy resin E44, bisphenol F type Epoxy resin 170 and polypropylene glycol diglycidyl ether are mixed uniformly according to the weight ratio of 50:30:30.

[0...

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Abstract

The invention discloses low-temperature-resistant solvent-free and thick-film type epoxy anticorrosive paint. The paint is formed by evenly mixing a component A and a component B in a weight ratio being (2-4):1, wherein the component A comprises ingredients in parts by weight as follows: 100 parts of compound toughened epoxy resin, 10-50 parts of anti-flowing gel, 100-150 parts of pigment and filler A and 5-10 parts of an aid; the component B comprises ingredients in parts by weight as follows: 100 parts of a compound curing agent, 0-10 parts of benzyl alcohol and 80-120 parts of pigment and filler. The epoxy anticorrosive paint is free of solvents, contains no harmful substances, can be applied to inner walls of drinking water delivery concrete pipelines and sewage storage tanks, has higher low-temperature toughness and high/low-temperature thermal compatibility with concrete and has high environment adaptability, the concrete surface can be blade-coated with a coating of 1,000 mu m-1,500 mu m thick, flowing and sagging can be avoided, and the construction efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of marine engineering concrete protective coatings, in particular to a low-temperature-resistant solvent-free thick-film epoxy anti-corrosion coating. Background technique [0002] Seawater is a highly corrosive electrolyte solution. A large amount of dissolved oxygen contained in seawater, marine organisms, corrupt organic matter, the erosion of waves, the impact of floating objects, and bacteria in sea mud can all cause damage to marine concrete to varying degrees. corrosion damage. Heavy-duty anti-corrosion coatings are one of the important means of marine concrete protection. Especially in the marine environment spray splash area and ultra-tolerance area, the performance requirements for protective coatings are very high. [0003] At present, domestic marine concrete protective coatings generally adopt a three-layer coating system. The bottom layer is mostly epoxy sealer paint, the middle layer is epox...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D175/08C09D5/08C09D7/12
CPCC08K2201/011C08K2201/014C08L2205/035C09D5/08C09D7/61C09D7/63C09D7/65C09D163/00C08L63/00C08L75/08C08K13/02C08K5/5435C08K3/36C08K2003/2241C08K5/544
Inventor 王彦民刘军蒋文誉刘畅
Owner 蓝色海洋(天津)工程技术有限公司
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