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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, multiple coatings are required, resulting in poor environmental protection and economic benefits.
The temperature in northern my country is low in winter, and epoxy thick build paint is prone to cracking at low temperatures, resulting in protection failure

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

Embodiment 1

[0026] The epoxy anticorrosion coating of this embodiment is prepared by uniformly mixing component A and component B according to the weight ratio of 3:1.

[0027] The A component contains the following ingredients: 100kg composite toughened epoxy resin, 30kg anti-dripping gel, 35kg precipitated barium sulfate, 5kg iron oxide red, 40kg talcum powder, 40kg sericite, BYK-A530 defoamer 2kg, German BYK-3550 leveling agent 2kg, German BYK BYK-R605 thixotropic agent 3kg; the composite toughened epoxy resin is prepared by composite epoxy resin and toughener polymerized phenol-terminated polypropylene glycol ether polyurethane Polymer (Bayer XP2540) is mixed according to the weight ratio of 100:30; The anti-dripping gel is made of silane coupling agent KH560, fumed silica, nano-titanium dioxide and composite epoxy resin according to 8:8:20:100 The weight ratio is mixed; the composite epoxy resin is made of bisphenol A type epoxy resin E51, bisphenol F type epoxy resin 170, 1,4 butane...

Embodiment 2

[0041] The epoxy anticorrosion coating of this embodiment is prepared by uniformly mixing component A and component B according to the weight ratio of 4:1.

[0042] The A component contains the following components by weight: 100kg composite toughened epoxy resin, 20kg anti-dripping gel, 50kg precipitated barium sulfate, 10kg iron oxide red, 40kg sericite, 30kg talcum powder, BYK-A530 Defoamer 4kg, German Bi Ke BYK-3550 leveling agent 4kg; Described composite toughening epoxy resin is by the polypropylene glycol ether polyurethane prepolymer (Bayer XP2540) of composite epoxy resin and toughening agent polymerization phenol termination according to 100 The weight ratio of 10 is mixed and made; the anti-dripping gel is made by mixing silane coupling agent KH550, fumed silica, nano-titanium dioxide and composite epoxy resin according to the weight ratio of 8:5:30:100; the The above-mentioned composite epoxy resins are made by uniformly mixing bisphenol A epoxy resin E51 and bisph...

Embodiment 3

[0055] The epoxy anticorrosion coating of this embodiment is prepared by uniformly mixing component A and component B according to the weight ratio of 3:1.

[0056] The A component contains the following components by weight: 100kg of composite toughened epoxy resin, 50kg of anti-dripping gel, 50kg of precipitated barium sulfate, 50kg of talcum powder, and 5kg of German BYK-A530 defoamer; Tough epoxy resin is made by mixing composite epoxy resin and toughening agent polymerized phenol-terminated polypropylene glycol ether polyurethane prepolymer (Bayer XP2540) in a weight ratio of 100:50; the anti-dripping gel is made of silane coupling agent KH560, fumed silica, nano-titanium dioxide and composite epoxy resin are mixed according to the 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 uniformly mixed in a weight ratio of 50:30:30.

[0057] The B co...

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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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