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Low temperature cured solvent-free epoxy anticorrosion paint and its preparation method

An epoxy anti-corrosion coating, solvent-free technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of limited low-temperature workability, large temperature dependence, slow, stop below 5 ℃, etc. Excellent physical and mechanical properties, energy saving, good flexibility

Active Publication Date: 2012-03-21
SHANGHAI HILONG SHINE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing heavy-duty anti-corrosion coatings for the inner and outer walls of pipelines are mainly epoxy resin coatings, but the curing of epoxy resin coatings is highly dependent on temperature. Generally, the curing is slow below 10°C, stops below 5°C, and completely cures at 23°C. It takes 7 days to complete at ℃; and in this low-temperature construction environment, the solvent in the solvent-based epoxy resin coating cannot be volatilized, which limits the further low-temperature construction of this system

Method used

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  • Low temperature cured solvent-free epoxy anticorrosion paint and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The raw material ratio (percentage by weight) of Examples 1 to 3 is shown in Table 1 below:

[0030]

[0031] According to the ratio of Example 1 in the above table 1, add nitrile rubber modified epoxy resin to bisphenol A modified epoxy resin, then stir until uniform, and then add various additives and inorganic pigments and fillers in sequence according to the proportion , Stir at room temperature and grind to ≤60μm, filter after passing. When in use, mix according to the mass ratio of component A: component B = 100: 20.76, the measured adhesion (cross-cut method) is grade 1, the flexibility is 1mm, and the impact strength is 50kg·cm.

Embodiment 2

[0033] According to the proportion of Example 2 in the above table 1, add nitrile rubber modified epoxy resin and benzyl glycidyl ether to bisphenol A modified epoxy resin, then stir until uniform, and then add various Additives and inorganic pigments and fillers, after stirring at room temperature, grind to ≤60μm, and filter after passing the test. When in use, mix according to the mass ratio of component A: component B = 100: 23.57, the measured adhesion (cross-cut method) is grade 1, the flexibility is 1mm, and the impact strength is 50kg·cm.

Embodiment 3

[0035] According to the proportion of Example 3 in the above table 1, add nitrile rubber modified epoxy resin and benzyl glycidyl ether to bisphenol A modified epoxy resin, then stir until uniform, and then add various Additives and inorganic pigments and fillers, after stirring at room temperature, grind to ≤60μm, and filter after passing the test. When in use, mix according to the mass ratio of component A:component B=100:19.82, the measured adhesion (cross-cut method) is grade 1, the flexibility is 1mm, and the impact strength is 50kg·cm.

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Abstract

The invention discloses a low temperature cured solvent-free epoxy anticorrosion paint and its preparation method. The low temperature cured solvent-free epoxy anticorrosion paint comprises a component A and a component B with weight ratio of 100:12.90-24.12, wherein, the component A comprises the following ingredients by weight percentage: 26.75-50.0% of bisphenol A modified epoxy resin, 6.71-18% of auxiliary agent and 43.29-55.75% of inorganic pigments and fillers. The auxiliary agent comprises nitrile rubber modified epoxy resin, benzyl glycidyl ether, modified polyacrylate, fluorocarbon modified polyacrylate, polymethyl alkyl siloxane, an ester coupling agent and gas phase silica; the inorganic pigments and fillers comprise carbon black, zinc phosphate, aluminium triphosphate, mica powder, titanium dioxide, talcum powder and ferrotitanium powder; the component B is modified aliphatic amine. The solvent-free epoxy anticorrosion paint of the invention can be rapidly cured at the low temperature of 4 DEG C in winter, and the method of the invention has the advantages of simple and convenient construction, no special device requirement, energy saving and low cost.

Description

technical field [0001] The invention relates to a low-temperature curing solvent-free epoxy anti-corrosion coating and a preparation method thereof, which are used for anti-corrosion of inner and outer walls of pipelines in a low-temperature environment. Background technique [0002] The existing heavy-duty anti-corrosion coatings on the inner and outer walls of pipelines are mainly epoxy resin coatings, but the curing of epoxy resin coatings is highly dependent on temperature. Generally, the curing is slow below 10°C, stops below 5°C, and completely cures at 23°C. It takes 7 days to complete at ℃; and in this low-temperature construction environment, the solvent in the solvent-based epoxy resin coating cannot be volatilized, which limits the further low-temperature construction of this system. In order to be able to apply epoxy resin coatings at low temperatures, polyisocyanates and polythiols are commonly used. Contents of the invention [0003] In order to further enha...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D7/12C09D5/08F16L58/10
Inventor 杜传芹丁武斌李芳梁擘聃
Owner SHANGHAI HILONG SHINE NEW MATERIAL
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