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Anti-corrosion two-component adhesive for thermal power plant desulfurization chimney lining and preparation method thereof

A chimney lining, two-component technology, applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of poor bonding performance, long curing time, and limited promotion, and achieve improved Effect of application value, short curing time, and extended service life

Active Publication Date: 2016-05-25
CHENGDU LONGZHIQUAN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent CN201010604881 published by Chen Naihong and others provides a heat-resistant and acid-resistant anti-corrosion coating for brick desulfurization chimneys. It is composed of nano-silicone resin emulsion, glass flakes and ammonium silica in a certain mass ratio to form a film-forming base material, adding additives, Defoamer and pigment etc. are formulated into temperature-resistant and acid-resistant anticorrosion coatings, but its bonding performance is not good; the patent CN201210363919.8 that Ren Tianrui et al. And adding pigments and fillers such as glass flakes to form component A, and triethanolamine, diethylenetriamine and polyethylene polyamine as composite curing agents to form component B, but the curing time is long, which is not conducive to construction; published by Deng Yuqiang et al. Patent CN201210284643.4 provides a desulfurization chimney anti-corrosion coating method, which is composed of fluoroelastomer, solvent, filler and additives dissolved, dispersed and mixed in a certain proportion as component A, and the curing agent and solvent are mixed in a certain proportion As component B, mix components A and B in proportion to obtain an anti-corrosion coating, which has excellent performance, but the cost is high and the promotion is limited

Method used

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  • Anti-corrosion two-component adhesive for thermal power plant desulfurization chimney lining and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0029] 1) Preparation of component A: Add 100 parts by mass of 107 gum and 30 parts by mass of simethicone to the reaction kettle, vacuumize at 95°C for 5 minutes, continue stirring for 1 hour, then add 8 parts by mass of A mixture of fumed silica (200 mesh) and 1 mass part of coupling-treated glass flakes (200 mesh), after stirring evenly, add 60 mass parts of xylene and petroleum ether mixed solvent (volume ratio is 5:1) and 0.5 parts by mass of KH-550, stirred evenly and cooled to room temperature, then poured out to obtain component A.

[0030] 2) Preparation of component B: at room temperature, mix 1 mass part of methyltrimethoxysilane, 0.4 mass part of dibutyltin dilaurate, 2.5 mass parts of n-butyl titanate, 2.5 mass parts of n-butyl borate Add 10 parts by mass of xylene and petroleum ether mixture (volume ratio 5:1) into the mixer, and stir evenly to obtain component B.

[0031] 3) Prepare component A and component B according to the mass ratio of 12:1, and stir evenl...

Embodiment 2

[0033] 1) Preparation of component A: Add 100 parts by mass of 107 gum and 35 parts by mass of simethicone to the reaction kettle, vacuumize at 95°C for 5 minutes, continue stirring for 1 hour, then add 8 parts by mass of The mixture of fumed white carbon black (200 mesh) and the glass flakes (200 mesh) of coupling treatment of 1 mass part, after stirring evenly, add 55 mass parts of xylene and sherwood oil mixed solvent (volume ratio is 5:1) and 0.5 parts by mass of KH-550, stirred evenly and cooled to room temperature, then poured out to obtain component A.

[0034]2) Preparation of component B: 1.5 parts by mass of methyltrimethoxysilane, 0.5 parts by mass of dibutyltin dilaurate, 2.5 parts by mass of n-butyl titanate, 2.0 parts by mass of n-butyl borate Add 10 parts by mass of xylene and petroleum ether mixture (volume ratio 5:1) into the mixer, and stir evenly to obtain component B.

[0035] 3) Prepare component A and component B according to the mass ratio of 12:1, and ...

Embodiment 3

[0037] 1) Preparation of component A: Add 100 parts by mass of 107 gum and 40 parts by mass of simethicone to the reaction kettle, vacuumize at 95°C for 5 minutes, continue stirring for 1 hour, then add 10 parts by mass of The mixture of fumed white carbon black (200 mesh) and the glass flakes (200 mesh) of coupling treatment of 3 mass parts, after stirring evenly, add 50 mass parts of xylene and sherwood oil mixed solvent (volume ratio is 5:1) and 0.5 parts by mass of KH-550, stirred evenly and cooled to room temperature, then poured out to obtain component A.

[0038] 2) Preparation of component B: 2.0 parts by mass of methyltrimethoxysilane, 0.6 parts by mass of dibutyltin dilaurate, 2.0 parts by mass of n-butyl titanate, 2.0 parts by mass of n-butyl borate Add 10 parts by mass of xylene and petroleum ether mixture (volume ratio 5:1) into the mixer, and stir evenly to obtain component B.

[0039] 3) Prepare component A and component B at a mass ratio of 12:1, stir evenly a...

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Abstract

The invention discloses an anticorrosive double-component adhesive for thermal power plant desulfurization flue linings and a preparation method thereof. The adhesive is prepared by mixing a component A and a component B in a mass ratio of 12:1. The component A is composed of the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane (107 glue), 30-50 parts of dimethyl silicone oil, 9-17 parts of filler, 40-60 parts of solvent a and 0.5 part of coupling agent. The component B is composed of the following components in parts by weight: 1.0-2.0 parts of curing agent, 0.3-0.6 part of catalyst, 3-5 parts of assistant and 10 parts of solvent b. The adhesive has the advantages of favorable strong acid corrosion resistance, high-temperature aging resistance, high / low temperature alternation resistance, favorable bonding property, higher application value as a flue lining adhesive, longer service life, short curing time and favorable workability.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion materials, and relates to an anti-corrosion adhesive, in particular to an anti-corrosion two-component adhesive used for lining a desulfurization chimney of a thermal power plant and a preparation method thereof. Background technique [0002] The flue gas emitted by coal-fired power plants contains a large amount of dust, SO 2 , NO x Pollutants such as SO 2 It is the main pollution source of PM2.5 and acid rain, which seriously endangers human health. With the implementation of the national environmental protection policy and the implementation of "energy saving and emission reduction" regulations, new and existing thermal power plants have carried out flue gas desulfurization, wet limestone The desulfurization process has played a dominant role in the exhaust gas purification devices of thermal power plants. While the wet limestone desulfurization technology reduces environmental pollut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/06C09J183/04C09J11/04
Inventor 李明田潘忠文
Owner CHENGDU LONGZHIQUAN SCI & TECH
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