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Novel fast-set anticorrosion and wear-resistant epoxy powder coating and preparation process thereof

A fast-curing, wear-resistant epoxy technology, applied in powder coatings, anti-corrosion coatings, epoxy resin coatings, etc., to achieve the effect of simple preparation process, excellent physical and mechanical properties and wear resistance of the coating film, and improved wear resistance

Inactive Publication Date: 2012-06-13
JIANGSU LANLING POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of epoxy powder coatings, phenolic modified epoxy resins with better anti-corrosion properties, polyphenylene sulfide modified epoxy resins, and fast-curing phenolic hydroxyl resin curing agents with better anti-corrosion properties and film properties are still scarce. As we all know, pigments and fillers generally use coloring pigments and cast stone powder with good wear resistance, diopside, emery, etc., and there are only a few anti-rust pigments and modified silicon micropowder and nano-scale fillers with high hardness and good dispersibility. application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A new fast-curing anti-corrosion and wear-resistant epoxy powder coating has the following formula (each component is the mass percentage): 43 parts of bisphenol A epoxy resin, 9 parts of dibasic fatty acid chain-extending phenolic hydroxyl resin curing agent, 5 parts of coloring pigment, 3.2 parts of aluminum tripolyphosphate, 21.5 parts of silicon micropowder, 5 parts of nanoscale HT618 wear-resistant powder, 4 parts of polyethylene resin, 3 parts of polyamide (nylon) resin, 2.0 parts of leveling agent, 1.0 parts of dispersant part, 0.5 part of benzoin degassing agent, 0.2 part of loosening agent, 0.6 part of 2-methylimidazole curing accelerator, 2 parts of graphite lubricant, and the preparation process is as follows:

[0020] (1) After weighing the material according to the formula, pre-mix the material through a high-speed mixer for 3 minutes in the order of adding epoxy resin, curing agent, filler, resin modifier, pigment, and additives, and then use a melt extrusi...

Embodiment 2

[0023] A new type of fast-curing anti-corrosion and wear-resistant epoxy powder coating has the following formula (each component is a mass percentage): 30 parts of bisphenol A epoxy resin, 15 parts of phenolic modified epoxy resin, phenolic hydroxyl resin cured 8 parts of agent, 5 parts of coloring pigment, 3.2 parts of composite iron-titanium powder, 25.5 parts of silicon micropowder, 4 parts of polyphenylene sulfide resin, 3 parts of polyamide (nylon) resin, 2.0 parts of leveling agent, 1.0 part of dispersant, amide 0.5 part of wax degassing agent, 0.2 part of loosening agent, 0.6 part of 2-phenylimidazoline curing accelerator, 2 parts of graphite lubricant, the preparation process is as follows:

[0024] (1) After weighing the material according to the formula, pre-mix the material through a high-speed mixer for 5 minutes in the order of adding epoxy resin, curing agent, filler, resin modifier, pigment, and additives, and then use a melt extrusion mixer Carry out melt extr...

Embodiment 3

[0027] A new fast-curing anti-corrosion and wear-resistant epoxy powder coating has the following formula (each component is a mass percentage): 40 parts of phenolic modified epoxy resin, 12 parts of phenolic hydroxyl resin curing agent, 5 parts of coloring pigment, compound 3.2 parts of iron-titanium powder, 26.5 parts of silicon micropowder, 4 parts of vinylidene fluoride resin, 3 parts of polyamide (nylon) resin, 2.0 parts of leveling agent, 1.0 part of dispersant, 0.5 part of amide wax degasser, 0.2 part of loosening agent , 0.6 parts of 2-methylimidazole curing accelerator, 2 parts of molybdenum disulfide lubricant, the preparation process is the same as in Example 2.

[0028] After testing, the powder coating obtained in the above-mentioned embodiment 1 can be fully cured to form a film at 180°C in 3 minutes, and the powder coating obtained in Examples 2 and 3 can be completely cured to form a film at 180°C in 5 minutes. The powder coating obtained in the three examples ...

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Abstract

The invention relates to the field of chemical coating, in particular to epoxy powder coating applied to material conveying steel belts in oilfield oil pumping pipelines or coal transportation in the oil industry. In a formula, the coating comprises the following components in percentage by weight: 32-56% of epoxy resin, 8-14% of curing agent, 30-50% of pigments and fillers, 2-10% of resin modifier and 2-6% of assistant, wherein the epoxy resin in the formula is bisphenol A type epoxy resin, a mixture of the bisphenol A type epoxy resin and phenolic aldehyde modified epoxy resin, and phenolic aldehyde modified epoxy resin, and the curing agent is phenolic hydroxyl resin. The epoxy powder coating disclosed by the invention belongs to fast-set anticorrosion and wear-resistant epoxy powder coating, has the granularity being 10-125 mu m, is applied under general curing conditions that the curing temperature is 180-200 DEG C and the curing time is 3-10min, can be regulated according to user needs and is superior to like products in anticorrosion performance, coating film mechanical performance and wear resistance, a preparation process is simple, the labour productivity can be obviously increased, and the epoxy powder coating is suitable for industrialized production.

Description

technical field [0001] The invention relates to the field of chemical coatings, in particular to a novel fast-curing anti-corrosion and wear-resistant epoxy powder coating used for oil field oil suction pipes in the petroleum industry or material conveying steel belts in the coal transportation industry. Background technique [0002] At present, there are many kinds of anti-corrosion and wear-resistant powder coatings used in the oil mining and coal transportation industries. The powder coatings on the market can be mainly divided into two categories: thermosetting type and thermoplastic type. Thermosetting epoxy resin anti-corrosion and wear-resistant powder coatings and thermoplastic polyamide (nylon) resin powder coatings. These two kinds of powder coatings have certain application limitations. The curing speed of epoxy resin powder coatings is slow, the coating production efficiency is low, and the low temperature impact resistance and bending resistance of the coating f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C09D163/04C09D123/06C09D177/00C09D181/02C09D127/16C09D5/03C09D5/08C09D7/12
Inventor 高新田金顺玉潘锎程军盛晔陈建刚南仁植
Owner JIANGSU LANLING POLYMER MATERIAL CO LTD
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