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Coating for offshore steel structure buildings and preparation method thereof

A technology for steel structures and buildings, applied in anti-corrosion coatings, rubber derivative coatings, coatings, etc., can solve the problems of easy peeling of coatings, high cost, corrosion of steel components, etc. Corrosion properties, the effect of enhancing the fire resistance limit

Active Publication Date: 2014-07-02
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, for coastal or offshore steel structure buildings, due to the erosion of damp and salty sea breeze all the year round, corrosion of steel components occurs, which seriously affects their service life and brings safety hazards, so it is also very important. It is necessary to protect it from moisture and corrosion
Brushing paint is the most economical and effective way to protect steel structure materials, but the fireproof coatings for steel structures currently on the market basically have no moisture-proof and anti-corrosion functions
The existing technology is to paint anti-corrosion paint on the steel structure first, and then paint fire-proof paint. The problems of this painting process are that the process is cumbersome, the cost is high, and it is often caused by the mismatch between the two coatings. Cause the coating to peel off easily and affect the protective effect
[0003] In recent years, there have been many reports on ultra-thin intumescent steel structure fireproof coatings at home and abroad, but there are not many researches and patent reports on fireproof and anti-corrosion ultra-thin intumescent steel structure coatings.

Method used

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  • Coating for offshore steel structure buildings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1: Preparation of Modified Acrylic Resin

[0039] According to the method disclosed in Chinese patent CN101570587A, add 80% of the total dose of 12kg ethyl acetate and 6kg methanol mixed solvent in the reaction kettle, and when heating to 50-60°C while stirring, add 3.55kg of styrene, 1.52 kg of methyltriethoxysiloxane and 51 g of benzoyl peroxide. After reacting for 40 minutes, 4.57 kg of ethyl acrylate, 0.51 kg of perfluoroalkyl butyl acrylate, 51 g of benzoyl peroxide and the remaining mixed solvent were added dropwise within 2.5 hours. Add 51g of ammonium persulfate 20min after the dropwise addition, heat up to 75-80°C, react for 7h, cool down to room temperature and discharge to obtain F 5 Si 15 Modified acrylic resin, the whole reaction process adopts nitrogen protection.

[0040] Step 2: Preparation of Modified Amino Resin

[0041] According to the method disclosed in the Chinese patent CN200510085694.4, 10 kg of clay and 500 kg of deionized water were s...

Embodiment 2

[0051] Step 1: Preparation of Modified Acrylic Resin

[0052] Synthesize modified acrylic resin according to the method disclosed in Chinese patent CN101570587A. Add 80% of the total dose of 12kg ethyl acetate and 6kg methanol mixed solvent into the reaction kettle, and when heating to 50-60°C while stirring, add 3.55kg of styrene, 0.51kg of methyltriethoxy silicone and 51g of benzoyl peroxide. After 40 minutes, 4.57 kg of ethyl acrylate, 1.52 kg of perfluoroalkyl butyl acrylate, 51 g of benzoyl peroxide and the remaining mixed solvent were added dropwise within 2.5 hours. Add 51g of ammonium persulfate 20 minutes after the dropwise addition, raise the temperature to 75-80°C, react for 6-8 hours, cool down to room temperature and discharge to obtain F 15 Si 5 Modified acrylic resin, the whole reaction process adopts nitrogen protection.

[0053] Steps 2-3: Modified amino resin, the preparation of modified expandable graphite is the same as in Example 1.

[0054] Step 4: P...

Embodiment 3

[0057] Step 1: Preparation of Modified Acrylic Resin

[0058]Synthesize modified acrylic resin according to the method disclosed in Chinese patent CN101570587A. Add 80% of the total dose of 12kg ethyl acetate and 6kg methanol mixed solvent into the reaction kettle, and when heating to 50-60°C while stirring, add 3.55kg of styrene, 1.01kg of methyltriethoxy silicone and 51g of benzoyl peroxide. After 40 min, 4.57 kg of ethyl acrylate, 1.01 kg of perfluoroalkyl butyl acrylate, 51 g of benzoyl peroxide and the remaining mixed solvent were added dropwise within 1.5 h. Add 51g of ammonium persulfate 20 minutes after the dropwise addition, raise the temperature to 75-80°C, react for 6-8 hours, cool down to room temperature and discharge to obtain F 10 Si 10 Modified acrylic resin, the whole reaction process adopts nitrogen protection.

[0059] Step 2: Preparation of Modified Amino Resin

[0060] Prepared according to the method disclosed in Chinese patent ZL200510085694.4. Add...

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Abstract

The invention discloses a coating for offshore steel structure buildings and a preparation method thereof and relates to the coating. The coating for the offshore steel structure buildings comprises 0.13-0.34 of coupling agent, 17.4-23 of gasoline, 21.0-25.6 of matrix resin, 1.6-2.0 of plasticizer, 23.2-27.6 of dehydration char-forming catalyst, 10.2-14.5 of char-forming agent, 8.1-10.8 of foaming agent, 10.5-16.8 of pigment and filler and 1.6-4.2 of modified expanded graphite. The preparation method comprises the following steps of: dissolving the matrix resin and the plasticizer in the gasoline, then adding the dehydration char-forming catalyst, the char-forming agent, the foaming agent and the modified expanded graphite for mixing, adding the pigment and filler to a dispersion machine, adding the coupling agent and dispersing after heating, when the temperature is lower than 45 DEG C, adding to a mixed liquor for mixing, grinding, discharging and sieving to obtain the product. The coating not only can meet the higher fire protection requirement of the steel structure building, but also can meet the requirement of damp-proof and corrosion prevention performance of the offshore buildings.

Description

technical field [0001] The invention relates to a coating, in particular to a special coating with anti-corrosion function for offshore steel structure buildings and a preparation method thereof. Background technique [0002] The rapid development of economy and society has promoted the continuous upgrading and replacement of building materials. Steel structures with high earthquake resistance and environmental protection have gradually replaced traditional reinforced concrete in the process of urbanization in the world and in my country, and have become the main building form. According to the requirements of my country's fire protection code for building design (GB50016-2006), the surface of the steel components of the building must be protected against fire. In addition, for coastal or offshore steel structure buildings, due to the erosion of damp and salty sea breeze all the year round, corrosion of steel components occurs, which seriously affects their service life and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/08C09D125/14C09D161/32C09D115/02C09D5/08C09D7/12
Inventor 戴李宗吴锦添罗伟昂钟丽娜许一婷曾碧榕
Owner XIAMEN UNIV
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