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Freeze-thawing-resistant epoxy protective paint and preparation method thereof

A protective coating, freeze-thaw resistance technology, applied in the direction of epoxy resin coating, anti-corrosion coating, coating, etc., can solve the problems of unusable, water resistance is not very ideal, etc., to reduce internal stress, good bonding effect, reduce The effect of system viscosity

Inactive Publication Date: 2017-06-23
HUBEI WUDA LUOJIA INSPECTION & CONSULTATION OF ENG STRUCTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current coatings generally have poor water resistance and cannot be used in humid environments. Once the substrate cracks, the coating will immediately produce cracks and appear.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A component, by weight:

[0027] Epoxy resin E51 - 85 parts;

[0028] Toughening agent -- 10 parts;

[0029] Diluent (benzyl glycidyl ether) --- 5.5 parts;

[0030] Silica powder - 20 parts;

[0031] Thixotropic agent (fumed silica A200) --- 0.5 part;

[0032] Silane coupling agent (γ-glycidyl etheroxypropyltrimethoxysilane)——0.2 parts.

[0033] B component, by weight:

[0034] Flexible curing agent H112 - 30 parts;

[0035] Modified amine curing agent CP400——35 parts;

[0036] Silica powder - 8 parts;

[0037] Thixotropic agent (fumed silica A200) --- 0.5 part;

[0038] Silane coupling agent (γ-aminopropyltriethoxysilane) —— 0.2 parts.

[0039] The above components A and B were added to the high-speed shearing disperser in turn and stirred to make them uniformly dispersed. They were ground by a three-roller mill and then packaged. Mix components A and B according to a weight ratio of 3:1, and stir Uniform, that is, a freeze-thaw resistant epoxy protective coa...

Embodiment 2

[0048] A component, by weight:

[0049] Epoxy resin E51 - 90 parts;

[0050] Toughening agent——5 parts;

[0051] Thinner (butyl glycidyl ether) --- 10 parts;

[0052] Silica powder - 10 parts;

[0053] Thixotropic agent (fumed silica A200) —— 2 parts;

[0054] Silane coupling agent (γ-glycidyl etheroxypropyltrimethoxysilane)—0.1 part.

[0055] B component, by weight:

[0056] Flexible curing agent H112 - 10 parts;

[0057] Modified amine curing agent CP400——45 parts;

[0058] Silica powder - 5 parts;

[0059] Thixotropic agent (fumed silica A200) —— 0.8 parts.

[0060] The above components A and B were added to the high-speed shearing disperser in turn and stirred to make them uniformly dispersed. They were ground by a three-roller mill and then packaged. Mix components A and B according to a weight ratio of 3:1, and stir Uniform, that is, a freeze-thaw resistant epoxy protective coating is prepared.

[0061] Measured colloidal strength performance indicators:

[00...

Embodiment 3

[0069] A component, by weight:

[0070] Epoxy resin E51 - 75 parts;

[0071] Toughening agent - 15 parts;

[0072] Thinner (benzyl glycidyl ether) --- 2 parts;

[0073] Silica powder --- 30 parts;

[0074]Thixotropic agent (fumed silica A200) --- 0.2 parts;

[0075] Silane coupling agent (γ-glycidyl etheroxypropyl trimethoxysilane) - 0.3 parts;

[0076] B component, by weight:

[0077] Flexible curing agent H112 - 45 parts;

[0078] Modified amine curing agent CP400——10 parts;

[0079] Silica powder - 10 parts;

[0080] Thixotropic agent (fumed silica A200) --- 0.2 parts;

[0081] Silane coupling agent (γ-aminopropyltriethoxysilane) —— 0.3 parts.

[0082] The above components A and B were added to the high-speed shearing disperser in turn and stirred to make them uniformly dispersed. They were ground by a three-roller mill and then packaged. Mix components A and B according to a weight ratio of 3:1, and stir Uniform, that is, a freeze-thaw resistant epoxy protective ...

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Abstract

The invention provides a freeze-thawing-resistant epoxy protective paint which is formed by mixing a component A and a component B in a weight ratio of 3:1. The component A comprises the following ingredients in parts by weight: 75-90 parts of epoxy resin, 5-15 parts of toughener, 2-10 parts of diluter, 10-30 parts of silicon micropowder, 0.20-2.0 parts of thixotropic agent and 0.1-0.3 part of silane coupling agent. The component B comprises the following ingredients in parts by weight: 10-45 parts of flexible curing agent, 10-45 parts of modified amine curing agent, 5-10 parts of silicon micropowder, 0.20-0.80 part of thixotropic agent and 0.1-0.3 part of silane coupling agent. By adopting the novel epoxy compound system, the cured colloid has high water resistance, high corrosion resistance and favorable flexibility; and after being brushed on the concrete or steel structure surface, the paint can effectively prevent the water in the environment from invading the substrate and causing freeze-thawing damage, enhances the crack blocking capacity of the substrate and reduces the internal stress of the material. The freeze-thawing-resistant epoxy protective paint has the characteristics of favorable bonding effect, high strength, high toughness, high cracking resistance, excellent long-term water resistance and the like.

Description

technical field [0001] The invention relates to a freeze-thaw resistant epoxy protective coating and a preparation method thereof. Background technique [0002] Building waterproofing occupies a very important position in the design and construction of architectural engineering, and is directly related to the normal use and life of buildings and structures. The current coatings generally have poor water resistance and cannot be used in a humid environment. Once cracks appear in the substrate, the coating will immediately produce cracks and appear. Contents of the invention [0003] The present invention proposes a freeze-thaw resistant epoxy protective coating and its preparation method. A new type of epoxy compound system is adopted. After curing, the colloid itself has strong water and corrosion resistance and good flexibility. It can be painted on concrete or The surface of the steel structure can prevent the moisture in the environment from invading the base material ...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D7/12C09D5/08C08G59/56
CPCC09D163/00C08G59/56C08K3/36C08K5/1515C08K5/544C09D5/08C09D7/61C09D7/63C09D7/70
Inventor 蔡浩浩肖皓万雄卫
Owner HUBEI WUDA LUOJIA INSPECTION & CONSULTATION OF ENG STRUCTURE