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Atomizing and spraying method of sulfur modified composite anticorrosive coating

A composite material and anti-corrosion coating technology, applied in anti-corrosion coatings, devices for coating liquid on the surface, coatings, etc., can solve the problems of poor durability of sulfur concrete, inability to spray and spray paint, and difficult to master the modification reaction. , to achieve the effect of improving thermal stability

Inactive Publication Date: 2012-10-31
刘岩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a modification reaction that is difficult to grasp, and severe temperature reactions often occur during operation, causing the temperature in the reactor to rise rapidly. If the temperature rise exceeds 140°C, the viscosity of the material increases, producing a viscous substance, which will form agglomerates in severe cases , damage the equipment, let alone spraying
[0006] To sum up, the biggest defect of sulfur concrete modified by the above material technology is its poor durability, and it cannot be used as a coating for atomization and spraying.
Because the sulfur material is thermoplastic, it is solid at normal temperature, and it becomes liquid after heating to a certain temperature. After heating and melting, the rapid solidification time at normal temperature is measured in seconds, and the viscosity is high and the fluidity is poor.
It is difficult to atomize and spray it even after it is hot melted into a liquid state

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment is to prepare an anti-corrosion coating, which is suitable for anti-corrosion in a highly aggressive chemical environment, and requires acid resistance, high hardness, high wear resistance, compression resistance, and tensile strength. In the sulfur-modified composite material, sulfur is 74.5%, modifier 25%, wherein the mixture ratio of dicyclopentadiene and cyclopentadiene oligomer is 3:7, and toughening agent 0.5%.

[0029] In the total proportion, sulfur modified composite material is 30%; fly ash or incineration garbage ash is 7%; fine aggregate is 23%, and coarse aggregate is 40%.

[0030] Prepare above-mentioned anticorrosion coating, comprise the following steps:

[0031] (1) Hot-melt sulfur raw material: add sulfur into the reaction vessel, heat to reach the hot-melt temperature of sulfur raw material 135-140°C, and dehydrate until there are no bubbles.

[0032] (2) Add modifier: reduce the temperature of raw sulfur to 120°C, start to slowly add...

Embodiment 2

[0037] This embodiment is to prepare a toughening, anti-crack, impact-resistant coating, wherein sulfur 55%, modifier 38.5%, wherein the mixture ratio of dicyclopentadiene and cyclopentadiene oligomer is 2:8 , 0.5% silane coupling agent, 0.5% titanate coupling agent, 0.5% fumed silica, 3% toughening agent. In the total proportion, the sulfur modified composite material is 39%, the fine aggregate is 15%, the coarse aggregate is 25%, and the powder is 5%.

[0038] Prepare above-mentioned coating, comprise the following steps:

[0039] (1) Hot-melt sulfur raw material: add sulfur into the reaction vessel, heat to reach the hot-melt temperature of sulfur raw material 135-140°C, and dehydrate until there are no bubbles.

[0040] (2) Add modifier: reduce the temperature of raw sulfur to 120°C, start to slowly add modifier in batches, keep stirring, then control the temperature at 140°C±5°C, and the reaction time is 5h.

[0041] (3) Add coupling agent, stabilizer and toughening age...

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Abstract

The invention discloses an atomizing and spraying method of a sulfur modified composite anticorrosive coating, which comprises the following steps of: (1) hot-melting a sulfur raw material: adding sulfur into a reaction vessel for heating, reaching the hot-melting temperature of 135-140 DEG C of the sulfur raw material and dewatering till no air bubble exits; (2) adding modifying agents: reducing the temperate of the raw material sulfur to 120 DEG C, slowly adding the modifying agents in batch, continuously agitating, then controlling the temperature to be 140 DEG C plus or minus 5 DEG C and reacting for 5 hours; (3) adding a coupling agent, a stabilizing agent and a toughening agent and keeping the temperature of 140 DEG C for 45 minutes; (4) adding an aggregate: controlling the temperature to be 140-150 DEG C and continuously agitating; and (5) atomizing and spraying: spraying by adopting a spray gun and still keeping the temperature of 140 DEG C. By adopting the method, the thermal stability, the viscosity, the density, the liquidity and other properties of a hot-melted sulfur modified composite material are improved, so that the material has the atomizing and spraying properties.

Description

technical field [0001] The invention belongs to an atomization spraying method of anti-corrosion paint, and in particular relates to a sulfur-modified composite material which is solid at normal temperature as an atomization spraying method of anti-corrosion paint. Background technique [0002] Currently known anti-corrosion and waterproof coatings are mostly oil-soluble and water-soluble organic materials, such as epoxy resin, acrylic acid, polyurethane, alkyd, chlorinated rubber, fluorocarbon, latex paint and other organic materials. It is usually diluted with an organic solvent and sprayed with compressed air through a spray gun. Moreover, the anticorrosion and waterproof functions of the anti-corrosion coating on the surface of the structure and the anti-seepage water layer of the tunnel are limited in the highly severe chemical erosion environment of the above-mentioned materials. For example, the Qinghai-Tibet Railway, due to the plateau environment such as harsh clim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24C09D5/08C04B28/00C04B20/10
Inventor 刘岩
Owner 刘岩
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