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Anticorrosive powder coating composition for super-tough rapid-bending steel bar, preparation method and application thereof

A technology of powder coatings and compositions, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as patent publications that have not yet been found, and achieve excellent resistance to chloride penetration, improve corrosion resistance, and adhesion strong effect

Inactive Publication Date: 2014-07-30
国润恒科(天津)防腐工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Through the search, no patent publications related to the patent application of the present invention have been found

Method used

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  • Anticorrosive powder coating composition for super-tough rapid-bending steel bar, preparation method and application thereof
  • Anticorrosive powder coating composition for super-tough rapid-bending steel bar, preparation method and application thereof
  • Anticorrosive powder coating composition for super-tough rapid-bending steel bar, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A super-tough and extremely fast-bending steel bar anti-corrosion powder coating composition and a preparation method thereof, the raw material components and parts by weight are respectively:

[0048]

[0049] Add the above-mentioned materials to a high-speed mixer, dry-mix them, and then add them to an extruder, melt, knead, cool, and tablet at an extrusion temperature of 80-120°C, and then pulverize, classify, sieve, Packaged to become a powder coating finished product.

[0050] Moreover, the special super-tough epoxy resin is self-made.

[0051] The self-made special epoxy resin is synthesized from three materials, the names are: NPES-907, YDCN-500-80P, OPL-350, the first two are purchased from Taiwan Formosa Plastics Group South Asia Epoxy Resin Kunshan Company, Composition of YDCN-500-80P o-cresol novolac epoxy resin (purchased from Korea Kukdo Chemical). The matching ratio of the three is: 300-500:30-50:200-300

[0052] Among them, OPL-350 is a self-made ni...

Embodiment 2

[0070] A super-tough and rapidly bendable anti-corrosion powder coating composition for steel bars, its raw material components and parts by weight are as follows: the preparation method of its self-made raw materials is the same as in Example 1.

[0071]

[0072] Wherein the preparation method of self-made special epoxy and curing agent is shown in embodiment 1, and the organic silane treatment process of pigments and fillers is also the same as embodiment 1.

[0073] The preparation method of the above-mentioned super-tough and rapidly bendable steel bar anti-corrosion powder coating composition, the steps are as follows:

[0074] Add the above-mentioned materials to a high-speed mixer, dry-mix them, and then add them to an extruder, melt, knead, cool, and tablet at an extrusion temperature of 80-120°C, and then pulverize, classify, sieve, Packaged to become a powder coating finished product.

Embodiment 3

[0076] A super-tough and rapidly bendable anti-corrosion powder coating composition for steel bars, its raw material composition and parts by weight are shown in Table 1, wherein the preparation method of self-made special epoxy and curing agent is shown in Example 1, and the organosilane treatment process of pigments and fillers is also the same Example 1, but the ratio of materials is changed, see Table 1. The preparation method of the super-tough and rapidly bendable steel bar anticorrosion powder coating composition is the same as that in Example 2.

[0077] The usage method of super-tough and rapidly bendable steel bar anticorrosion powder coating composition of the present invention can be as follows:

[0078] The production of the coated steel bar of the present invention is carried out in a professional production factory in the form of a production line, and its main process flow: steel bar surface treatment (shot blasting and derusting) → steel bar heating (intermedi...

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Abstract

The invention relates to an anticorrosive powder coating composition for super-tough rapid-bending steel bars, a preparation method and an application thereof; the composition comprises the following components by weight: 700-800 parts of special tough epoxy resin; 50-200 parts of special curing agents; 50-300 parts of organosilicon modified pigment filling materials; and 20-40 parts of auxiliary agents. The super-tough rapid-bending anticorrosive steel bars of the invention are mainly used for parts requiring heavy-duty anticorrosion in industries such as railway, roads, bridges, high-rise building basements, underground garages, harbours, wharves, dams and sewage treatment pools, chemical engineering, and the like, can increase the stability of steel bars, prolong the final service life of buildings, and have corrosion resistance nearly 800 times higher than naked steel bars. The powder coating composition of the invention also overcomes the generation of phenomena of powder wire drawing (like a spider web) during electrostatic spraying process, and cracking and stripping during rapid bending after film formation.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a super-tough and rapidly bendable steel bar anti-corrosion powder coating composition and its preparation method and application. Background technique [0002] The stability of steel performance is directly related to the final service life of the building. Due to the cracks or micropores in the reinforced concrete, the steel bars of the reinforced concrete will be corroded when they are corroded by salt water or acid rain. The oxide scale produced by corrosion expands dozens of times in volume, which can lead to concrete cracking and peeling of the protective layer, so that the steel bars are directly exposed to the atmosphere, water and its corrosive media, and the corrosion speed is accelerated. The buildings are often destroyed before reaching the design service life. Corrosion of steel bars will cause catastrophic accidents in engineering, and the corrosion protection of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D163/04C09D7/12C09D5/08C08G59/40
Inventor 赵金祥王焱
Owner 国润恒科(天津)防腐工程技术有限公司
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