Solvent-free epoxy phenolic coating

A technology of coatings and anti-corrosion coatings, which is applied in the direction of epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of poor acid resistance and achieve excellent chemical resistance

Active Publication Date: 2016-07-06
MARINE CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of this system can effectively solve the problem of poor acid resistance of the epoxy system....

Method used

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  • Solvent-free epoxy phenolic coating
  • Solvent-free epoxy phenolic coating
  • Solvent-free epoxy phenolic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 30 parts by weight of composite epoxy resin, put it into a stainless steel tank and stir it with a high-speed disperser, add 2 parts by weight of defoamer, 1.5 parts by weight of wetting and dispersing agent, and 1.5 parts by weight of leveling agent, and stir with the resin evenly Add 2 parts by weight of titanium dioxide, 5 parts by weight of talcum powder, 10 parts by weight of aluminum tripolyphosphate, 8 parts by weight of zinc phosphate, 3 parts by weight of iron-titanium powder, 10 parts by weight of mica powder, and 2 parts by weight of barium sulfate, and stir evenly, then Grind to standard fineness with a sand mill or three-roll mill, filter and pack into paint A component.

[0033] Weigh 23 parts by weight of the modified alicyclic amine curing agent and 2 parts by weight of the curing accelerator, stir evenly with a high-speed disperser, filter and pack into a bucket to become component B of the coating.

[0034] When using, mix the two components of A...

Embodiment 2

[0039] It is used in a ship chemical tank in Qingdao shipyard. Construction temperature: 8-15°C; construction method: high-pressure airless spraying, two coats with an interval of no more than 24 hours; paint film thickness: 320±20μm. During construction, the bulkhead surface shall be sandblasted to Sa2.5. Using the coating prepared in Example 1, the two components A and B are weighed by the weight ratio of A:B=3:1, mixed and stirred evenly, and sprayed by special high-pressure airless spraying equipment, and the obtained coating is smooth and smooth. The surface is bright. Use the coating after curing for seven days at room temperature (25°C), and check after 12 months that the coating is intact.

Embodiment 3

[0041] at a certain 2000m 3 The inner wall of carbon steel methanol storage tank is used. Construction temperature: 15-20°C; construction method: high-pressure airless spraying, two coats, with an interval of no more than 24 hours; paint film thickness: the tank wall is not less than 200 μm, and the tank bottom is not less than 300 μm. During construction, the surface of the inner wall of the storage tank shall be sandblasted to Sa2.5. Using the coating prepared in Example 1, the A and B components are weighed and matched in parts by weight of A:B=3:1, stirred evenly, and sprayed by special high-pressure airless spraying equipment, and the obtained coating is smooth, The surface is bright. The coating is cured at room temperature (25°C) for seven days and used, and checked after 12 months. There is no blistering and falling off, and the coating is intact.

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Abstract

The invention discloses a novel environmentally friendly solvent-free epoxy phenolic coating. The compound solvent-free epoxy phenolic resin is prepared from 195-208 epoxide equivalents of low molecular epoxy phenolic resin and 169-178 epoxide equivalents of acrylic acid-modified bisphenol A-type liquid epoxy resin through mixing. The coating solves the problems of poor acid and methanol resistance of the common epoxy coating, is free of a solvent, is environmentally friendly, has excellent comprehensive properties and chemical resistance and can be widely used as a protection material of inner walls of a ship chemical tank and facilities with acid and methanol resistance requirements.

Description

technical field [0001] The present invention has developed a new type of environmentally friendly solvent-free epoxy phenolic coating. After testing and practical application, it is known that this coating makes up for the lack of acid resistance and methanol resistance of ordinary epoxy coatings and is environmentally friendly without adding solvents. , its comprehensive properties, especially its excellent chemical resistance, can be widely used as protective materials for marine chemical tanks and inner walls of facilities that require acid resistance and methanol resistance. Background technique [0002] Ordinary epoxy resin coatings are widely used in the automobile industry and shipbuilding industry because of their excellent chemical resistance, good thermal stability, electrical insulation, and strong adhesion to metal substrates. , aviation industry, chemical industry and electrical industry and other fields, but because of its poor acid resistance, it is difficult ...

Claims

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Application Information

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IPC IPC(8): C09D163/04C09D163/10C09D7/12C09D5/08
Inventor 郭常青高新华方倩徐金文杨凯宋晓波张善贵包江涛
Owner MARINE CHEM RES INST
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