Preparation method of over-sprayed paint water treatment disinfectant in airplane coating technology

A coating process and water treatment technology, applied in the direction of neutralization water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of poor stability of melamine and formaldehyde resin solutions, easy stratification, and secondary pollution of water bodies To achieve the effects of protecting the working environment and the health of operators, strong electricity neutralization, and simple preparation process

Active Publication Date: 2014-04-02
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently commercially available paint mist coagulants are basically resin solutions prepared by the reaction of melamine and formaldehyde. Formaldehyde is likely to cause secondary pollution to water bodies

Method used

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  • Preparation method of over-sprayed paint water treatment disinfectant in airplane coating technology
  • Preparation method of over-sprayed paint water treatment disinfectant in airplane coating technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of modified polyether GP330: In a closed reactor, add 100g of polyether GP330, then add 5g of hydrophobic silica, stir well, raise the temperature to 80°C for 3 hours, discharge after cooling, and set aside.

[0019] Preparation of anti-viscosity agent DMC-A: Add 79g of water to the reaction bottle, add 10g of dodecylamine polyoxyethylene (10) ether, 10g of ethylene glycol methyl ether, and 1g of modified polyether GP330 in sequence, stir for 2 hours, and fully Mix, let stand and discharge.

Embodiment 2

[0021] Preparation of flocculant DMC-B: First add 1000g of water and 0.2g of aluminum sulfate into the reaction bottle. After stirring and dissolving, add 1g of anionic polyacrylamide with a molecular weight of 10 million and a degree of hydrolysis of 25. After stirring and dissolving completely, put material.

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PUM

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Abstract

The invention relates to a preparation method of an over-sprayed paint water treatment disinfectant in an airplane coating technology. The method is characterized in that the water treatment disinfectant comprises 1 parts by weight of viscosity reducer DMC-A and 1-3 parts by weight of flocculant DMC-B, and the viscosity reducer DMC-A and the flocculant DMC-B are mixed in 100 parts of water solution the pH of which is adjusted to be 8-9 by adding 20wt% liquid sodium hydroxide, so that the over-sprayed paint water treatment disinfectant is prepared, wherein the viscosity reducer DMC-A comprises a polyoxyethylene ether surfactant containing-NH perssad, an alcohol ether solvent and a polyether defoaming agent in a certain proportion, and the flocculant DMC-B comprises an amides polymer solution with 10 million of molecular weight and an aluminum salt mixed solution.

Description

technical field [0001] The invention relates to industrial water treatment technology, in particular to a method for preparing water treatment agent for oversprayed paint in aircraft painting process, in particular to a method for preparing water treatment agent for treating oversprayed paint in aircraft painting. Background technique [0002] Painting is one of the important processes in aircraft manufacturing. A large amount of overspray paint mist and organic solvent gas are generated during the painting process. If it is not treated, it will seriously affect the physical and mental health of the painting operators and seriously pollute the environment. According to the requirements of occupational health and environmental protection. Most of the coating companies at home and abroad use water treatment wet paint mist purifiers to treat the exhaust gas in the spray booth, so it must involve the treatment of circulating water in the wet spray booth. The selection and dos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56C02F1/66
Inventor 魏清霍莹张艳芳姚光源张莹张迪彦
Owner CHINA NAT OFFSHORE OIL CORP
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