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A spraying method for chemical storage tanks

A storage tank and chemical technology, which is applied in coatings, devices for coating liquids on the surface, and surface pretreatment, etc., can solve the problems of no suitable surface pretreatment, no coating effect, etc., and achieve energy saving and treatment Effects of cost, improvement of adhesion, and improvement of corrosion resistance

Active Publication Date: 2021-08-17
浙江晶慧科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the prerequisite for determining the quality of the coating is to carry out proper pretreatment on the metal surface, such as degreasing and rust removal, phosphating treatment, etc., without proper surface pretreatment, no matter how advanced the coating is, it will not Get a satisfactory coating effect

Method used

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  • A spraying method for chemical storage tanks

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A spraying method for a chemical storage tank, which comprises the following steps:

[0017] (1) Sand blast the inner wall of the chemical storage tank to achieve the purpose of degreasing and rust removal, and the sand blasting and rust removal can reach Sa2.5 level;

[0018] (2) After sandblasting, use silane coupling agent to carry out silane treatment on the surface of the storage tank. Silane must be hydrolyzed before use. Choose KH560 and KH570 as two silane coupling agents. The ratio is calculated according to the mass percentage: KH560 : KH570=1:1, the silane content of the final silane aqueous solution is 5~10 wt.%;

[0019] (3) After the silane film is self-drying, use artificial methods to pre-spray the primer on the surface, and the components A and B of the primer are prepared according to their respective proportions and mixed together for use;

[0020] (4) After the primer is self-drying, use a spraying robot to spray the surface according to the specifi...

Embodiment 2

[0025] A spraying method for a chemical storage tank, which comprises the following steps:

[0026] (1) Sand blast the inner wall of the chemical storage tank to achieve the purpose of degreasing and rust removal, and the sand blasting and rust removal can reach Sa2.5 level;

[0027] (2) After sandblasting, use silane coupling agent to carry out silane treatment on the surface of the storage tank. Silane must be hydrolyzed before use. Two silane coupling agents, KH550 and KH560, are selected, and the ratio is calculated according to the mass percentage: KH550 : KH560=1:1, the silane content of the final silane aqueous solution is 5~10 wt.%;

[0028] (3) After the silane film is self-drying, use artificial methods to pre-spray the primer on the surface, and the components A and B of the primer are prepared according to their respective proportions and mixed together for use;

[0029] (4) After the primer is self-drying, use a spraying robot to spray the surface according to th...

Embodiment 3

[0034] A spraying method for a chemical storage tank, which comprises the following steps:

[0035] (1) Sand blast the inner wall of the chemical storage tank to achieve the purpose of degreasing and rust removal, and the sand blasting and rust removal can reach Sa2.5 level;

[0036](2) After sandblasting, use silane coupling agent to carry out silane treatment on the surface of the storage tank. Silane must be hydrolyzed before use. Choose KH550, KH570, and KH570 three silane coupling agents. The ratio is calculated according to the mass percentage : KH550: KH560: KH570=1:1:1, the silane content of the final silane aqueous solution is 5~10 wt.%;

[0037] (3) After the silane film is self-drying, use artificial methods to pre-spray the primer on the surface, and the components A and B of the primer are prepared according to their respective proportions and mixed together for use;

[0038] (4) After the primer is self-drying, use a spraying robot to spray the surface according...

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Abstract

The invention discloses a spraying method of a chemical storage tank. Firstly, the inner wall of the chemical storage tank is sandblasted to remove oil and rust. After the treatment, a silane coupling agent is used to perform silane treatment on the surface of the storage tank. Finally, the surface is pre-sprayed with primer manually to ensure that the paint film is closely bonded to the metal surface. After the primer is self-drying, the surface is sprayed with a spraying robot according to the specified path to complete the topcoat spraying. The present invention adopts the silane pretreatment process to replace the long-term phosphating process, which saves the cost of pretreatment, and uses nano-SiO in the follow-up process 2 The particle-modified primer and topcoat ensure the quality of the coating. The surface of the coating has no defects such as cracks, orange peel blisters, pinholes, etc., and has good corrosion resistance.

Description

technical field [0001] The invention belongs to the field of surface engineering, in particular to a spraying method for a chemical storage tank. Background technique [0002] Chemical storage tanks are mainly used to store dangerous chemicals, often in contact with corrosive media such as sulfuric acid, hydrochloric acid, and caustic soda aqueous solution, and most of the storage tanks are made of metal, such as carbon steel storage tanks, stainless steel storage tanks, and aluminum storage tanks, so it is easy to Corrosion of the storage tank is caused, and the storage tank loses its original function. Although glass fiber reinforced plastics, ceramics, plastics and other materials can be used instead of metal materials, the strength often does not meet the requirements, and the manufacturing cost of storage tanks is unintentionally increased. Therefore, using appropriate anti-corrosion technology on the basis of metal materials can save costs and prolong The service life...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/14B05D7/00B05D3/12
CPCB05D3/12B05D7/14B05D7/584B05D2504/00
Inventor 庞艳红
Owner 浙江晶慧科技有限公司