Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Marine steel structure long-term protection multi-layer epoxy heavy-duty anti-corrosion coating and preparation method

A technology of anti-corrosion coating and epoxy resin coating, which is applied in the direction of epoxy resin coatings, coatings, and devices for coating liquid on the surface, can solve problems that have not been effectively solved, and achieve increased compactness and low Surface treatment requirements, effects of improving protection performance and service life

Active Publication Date: 2015-11-25
HOHAI UNIV
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bonding force and weather resistance between the marine heavy-duty anti-corrosion coating and the metal interface are the key factors affecting the service life of the coating, but the above problems have not been effectively solved in the existing patents and open literature

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Firstly, prepare polyvalent carboxyl epoxy resin: in a reaction vessel, dissolve 22.6g of toluene diisocyanate (TDI) with 300ml of anhydrous toluene, and protect it under nitrogen; dissolve 42g of E44 epoxy resin with 90ml of anhydrous toluene and transfer it into a constant pressure dropping funnel , under room temperature, stirring and nitrogen protection conditions, the E44 epoxy resin solution was added dropwise to the TDI toluene solution at a rate of 30 drops / min, then reacted at room temperature for 2 hours, raised the temperature to 120°C for 5 hours, and distilled under reduced pressure , Remove unreacted TDI, obtain TDI modified epoxy resin, move in the constant pressure dropping funnel under nitrogen protection, and add 60 milliliters of anhydrous N-methylpyrrolidone. Add 25g of citric acid and 80ml of anhydrous N-methylpyrrolidone that have been dehydrated in advance into a closed reaction vessel equipped with a thermometer, a stirrer and a condenser, stir un...

Embodiment 2

[0035]Research on multi-layer epoxy heavy-duty anti-corrosion coating for ship deck and ballast tank in a shipyard in Yangzhou. First use an electric angle grinder to remove serious rust or dirt, and then use ultra-high pressure water jets to clean the surface to remove loose matter on the surface and obtain a clean pretreated surface. The surface is wet or the remaining part of the water film, with flash rust, etc. will not affect the bottom. Painted construction. Then spray 2 roads of the multi-component carboxyl epoxy primer prepared in Example 1, with a thickness of 60 μm, and dry for 24 hours; then spray 2 roads of Akzo Nobel Powder Coatings Ningbo Co., Ltd. solvent-free epoxy powder coating with a thickness of 250 μm and cure at 180 ° C. 20 minutes; Finally, spray one coat of PN-968T-52 polyurethane epoxy topcoat from Tianjin Paiernier Company, with a thickness of 100 μm.

[0036] After the above-mentioned coating construction, the total thickness of the paint film reac...

Embodiment 3

[0038] The alkoxy silicon epoxy resin is prepared as follows: remove water, dry and purify toluene, epoxy resin and silane coupling agent. In a reaction vessel equipped with a thermometer, a stirrer and a condenser, 50g of E44 epoxy resin is dissolved with 200ml of anhydrous toluene, and filled with nitrogen protection; 25g of 3-aminopropyltriethoxysilane is dissolved with 80ml of anhydrous toluene, Move to the constant pressure dropping funnel under nitrogen protection, add in the toluene solution of epoxy resin at a speed of 20 drops / minute per minute, stir at room temperature for 2 hours, then be warming up to the temperature of toluene reflux and continue to react for 2 hours, cooling, reducing Pressure distillation, solvent removal, alkoxy silicon modified epoxy resin.

[0039] Research on multi-layer epoxy heavy-duty anti-corrosion coating for storage tanks in a cargo port in Jiangsu. First, use an electric angle grinder to grind to remove rust and dirt, remove surface ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a long-acting protection multi-layer epoxy heavy-corrosion-prevention coating for a sea steel structure and a manufacturing method of the long-acting protection multi-layer epoxy heavy-corrosion-prevention coating and belongs to the field of sea heavy corrosion prevention. The epoxy heavy-corrosion-prevention coating comprises three layers of structures which are a poly-carboxy epoxy resin coating body, a solvent-free epoxy coating body and acrylic epoxy finish coat or polyurethane epoxy finish cost or organic silicone epoxy finish coat or fluorocarbon finish coat. The multi-layer epoxy heavy-corrosion-prevention coating meets the low metal surface treatment requirement and can be constructed on a humid metal surface with rust, due to three-dimensional crosslinking curing and chemical bonding with a base material, the obtained coating interface bonding force is good, the crosslinking degree is high, the compactness is good, the weather resistance is excellent, the service life in a sea environment can reach more than 30 years, and the coating is simple in technology, easy to popularize and capable of being used for long-acting protection of seal steel and iron facilities.

Description

technical field [0001] The invention belongs to the technical field of marine heavy-duty anti-corrosion coatings, in particular to a multi-layer epoxy heavy-duty anti-corrosion coating for long-term protection of marine steel structures and a preparation method. Background technique [0002] In recent years, with the advancement of marine development, the Hangzhou Bay Bridge, Zhoushan Bridge, and Qingdao Bay Bridge have been built successively. Other offshore survey platforms, oil production platforms, and offshore oil and gas gathering platforms Marine projects such as pipelines, ships, port terminals, and cross-sea bridges have sprung up, and there is an urgent need for heavy-duty anti-corrosion coating technology with better marine anti-corrosion performance and longer service life. At present, heavy anti-corrosion coatings are mainly used to protect marine steel structures, mainly including epoxy, polyester, polyurethane, alkyd resin, phenolic resin, fluorocarbon resin, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B05D3/00B05D1/36C09D163/00C09D163/10C09D127/12
Inventor 李保松张磊于洋张薇薇
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com