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Boron phenolics-titanium nano composite temperature and pressure resistant heavy anti-corrosive coating and preparation method thereof

A nano-composite, boron-phenolic technology, used in anti-corrosion coatings, coatings, etc., can solve the problems of poor substrate adhesion, short service life, low mechanical strength, etc., and achieve the effects of good adhesion, convenient construction and stable storage.

Active Publication Date: 2010-08-18
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

General temperature-resistant anti-corrosion coatings are easily decomposed in high-temperature, high-pressure and acidic environments, and have poor adhesion to the substrate, low mechanical strength, and short service life in high-temperature, high-pressure and acidic environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] 1. Preparation of modified boron phenolic polymer

[0040] The modified boron phenolic polymer has the properties of a thermosetting polymer, and the flexible -B-O- bond can improve the brittleness and mechanical strength of the coating. The three-way cross-linked structure of boron and titanium improves the heat resistance of the coating.

[0041] In parts by weight, 20-35 parts of boric acid or diboron trioxide, 1-4 parts of nano-titanium dioxide, 0.5-2.5 parts of butyl orthotitanate and 60-80 parts of phenol are refluxed at 90-110°C under the action of KOH catalyst After 6-8 hours, heat up to 160-180°C to react, distill off the water to form boric acid phenolic ester mixtures with different reaction degrees; then cool to below 80°C, add 30-50 parts of boric acid phenolic ester mixtures to 50-70 parts of paraformaldehyde Or paraformaldehyde or formaldehyde aqueous solution, react at 80-110°C for 2-4 hours, remove water and low boiling point products, make the gel tim...

Embodiment 1

[0071] 1. Preparation of nanocomposite mother liquor

[0072] In parts by weight, add 50 parts of nano-titanium dioxide and 10 parts of nano-silicon dioxide into 50 parts of acetone for ultrasonic dispersion (temperature T=40° C.) for 10 minutes; Oxylkane coupling agent, Disperbyk180 macromolecular dispersant accounting for 1.5% of the total weight of the above-mentioned nanoparticles and the modified boron phenolic polymer accounting for 8% of the total weight of the above-mentioned nanoparticles are carried out by ultrasonic (T=60°C) dispersion for 1h; finally in 2×10 4 Centrifuge 3 times at rpm to prepare nanocomposite mother liquor.

[0073] 2. Preparation of modified boron phenolic polymer:

[0074] In parts by weight, 35 parts of boric acid, 4 parts of nano-titanium dioxide, 1.5 parts of butyl orthotitanate and 61 parts of phenol were refluxed at 100°C for 8 hours under the action of KOH catalyst, and then heated to 180°C to react. After distilling off water, different...

Embodiment 2

[0093] 1. Preparation of nanocomposite mother liquor

[0094] In parts by weight, add 40 parts of nano-titanium dioxide and 20 parts of nano-silica to 40 parts of acetone for ultrasonic dispersion (temperature T=40° C.) for 20 minutes; Alkane coupling agent, account for the Solsperse-2000 polymer dispersant of 4% of above-mentioned nanoparticle gross weight and account for the modified boron phenolic polymer (T=50 ℃) of 10% of above-mentioned nanoparticle gross weight and disperse 1h; Finally, at 2.5 ×10 4 Centrifuge 3 times at rpm to prepare nanocomposite mother liquor.

[0095] 2. Preparation of modified boron phenolic polymer:

[0096] In parts by weight, 32 parts of diboron trioxide, 3 parts of nano-titanium dioxide, 1 part of butyl orthotitanate and 65 parts of phenol were refluxed at 100°C for 6 hours under the action of KOH catalyst, then heated to 180°C for reaction, and water was distilled off Finally, a mixture of boric acid phenolic esters with different degrees ...

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Abstract

The invention relates to a heavy anti-corrosive nano composite coating technology, in particular to a boron phenolics-titanium nano composite temperature and pressure resistant heavy anti-corrosive coating and a preparation method thereof. The formula of the coating is as follows: 30 to 35 parts of modified phenolic polymer, 4 to 8 parts of nano composite liquid, 5 to 8 parts of reinforced carbon fiber, 20 to 25 parts of rutile titanium dioxide, 5 to 8 parts of silicon carbide powder, 4 to 7 parts of nickel-based alloy powder, 2 to 4 parts of flame retardant, and 15 to 22 parts of mixed solvent; and the materials are mixed in a ratio, dispersed and ground to have the grain size of below 40mu m, mixed with composite curing agent (the ratio is 1:0.5 to 1) which comprises linear phenol formaldehyde resin and resorcinol formaldehyde resin by the ratio of 1 to 3:1, heated and cured for 2 to 3h at 160 to 180DEG C, to prepare the heavy anti-corrosive composite coating. The coating of the invention can resist high temperature, high pressure (5 to 15MPa, 100 to 180DEG C) when the thickness is 0.1 to 2.0mm, and corrosion damage which contains hydrogen sulfide, sulfur dioxide, carbon dioxide, chloride and other strong acidic corrosive media, and the bonding force between the coating and a metal substrate is strong.

Description

technical field [0001] The invention relates to heavy-duty anti-corrosion nano-composite coating technology, in particular to a boron phenolic-titanium nano-composite temperature-resistant and pressure-resistant heavy-duty anti-corrosion coating and a preparation method thereof. Background technique [0002] Corrosion of metal materials is very serious in high-temperature, high-pressure and acidic environments, and there have been no efficient anti-corrosion materials and protective measures to solve the corrosion problem. General temperature-resistant anti-corrosion coatings are easily decomposed in high-temperature, high-pressure and acidic environments, and have poor adhesion to the substrate, low mechanical strength, and short service life in high-temperature, high-pressure and acidic environments. Contents of the invention [0003] The purpose of the present invention is to provide a new high-efficiency boron phenolic-titanium nanocomposite temperature-resistant, pres...

Claims

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Application Information

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IPC IPC(8): C09D161/14C09D7/12C09D5/08
Inventor 王震宇韩恩厚柯伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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