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Preparation method of environment-friendly and high-performance hectorite paint mist coagulant

A paint mist coagulant, green and environmentally friendly technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sewage treatment, etc., can solve the problem of poor paint debonding effect, large fixed investment, and low efficiency of clay treatment and other problems, to achieve the effect of improved adsorption and wrapping ability, bright application prospects, and excellent debonding effect

Active Publication Date: 2016-07-27
JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, caustic soda has poor versatility and is only effective for certain paints, and caustic soda is extremely corrosive, and the risk of safe operation is great
Melamine / aldehyde paint mist coagulant has good versatility, but generally has poor debonding effect on paint, especially formaldehyde containing carcinogens, so its application is greatly restricted and will gradually withdraw from the stage of history
Biological treatment and biochemical treatment paint mist coagulant have good effect and high efficiency, but there are also disadvantages such as large fixed investment and high cost
Clay-based paint mist coagulants have good versatility and have a good debonding effect on almost all types of paints, but the current clay treatment efficiency is low, resulting in a large amount of sludge and increasing the cost of waste treatment

Method used

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  • Preparation method of environment-friendly and high-performance hectorite paint mist coagulant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Firstly, 1000 parts of hectorite was made into a dispersion with a solid content of 6% in water, then dilute sulfuric acid was added to adjust the pH of the system to 3, and the reaction was stirred for 15 minutes;

[0031] 2) Then add 1 part of [Al 10 (OH) 22 ]Cl 8 , and continue to stir the reaction for 1h;

[0032] 3) After that, the temperature was raised to 50°C, and 50 parts of octadecyltrimethylammonium bromide was added, and the stirring reaction was continued for 30 minutes; after the reaction was completed, it was cooled to room temperature to prepare the paint mist coagulant a.

Embodiment 2

[0034]1) Firstly, 1000 parts of hectorite was made into a dispersion with a solid content of 15% in water, then dilute sulfuric acid was added to adjust the pH of the system to 6, and the reaction was stirred for 30 minutes;

[0035] 2) Then add 10 parts of [Al 10 (OH) 22 ]Cl 8 and 5 parts of [AlO 4 al 12 (OH) 24 (OH 2 ) 12 ]Cl 7 , and continue to stir the reaction for 2h;

[0036] 3) Then heat up to 80°C, add 50 parts of octadecyltrimethylammonium bromide and 50 parts of hexadecyltrimethylammonium bromide, continue to stir and react for 60 minutes; after the reaction is completed, cool to room temperature to obtain the paint fog coagulant b

Embodiment 3

[0038] 1) Firstly, make 1000 parts of hectorite with water into a dispersion with a solid content of 10%, then add dilute sulfuric acid to adjust the pH of the system to 5, and stir for 30 minutes;

[0039] 2) Then add 4 parts of [Al 10 (OH) 22 ]Cl 8 , 3 parts [AlO 4 al 12 (OH) 24 (OH 2 ) 12 ]Cl 7 , 2 parts [Al 24 (OH) 60 ]Cl 12 , and continue to stir the reaction for 1.5h;

[0040] 3) After that, the temperature was raised to 60°C, and 20 parts of octadecyltrimethylammonium bromide, 20 parts of hexadecyltrimethylammonium bromide, and 20 parts of dodecyltrimethylammonium chloride were added, and continued Stir the reaction for 45 minutes; after the reaction is completed, cool to room temperature to obtain the paint mist coagulant c.

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Abstract

The invention discloses a preparation method of an environment-friendly and high-performance hectorite paint mist coagulant. The method comprises steps as follows: firstly, a dispersion liquid with the solid content being 6%-15% is prepared from hectorite with water, then dilute acid is added to adjust the pH of the system to range from 3 to 6, and the system is stirred to react for 15-30 min; then a poly-aluminum compound is added and the system is continuously stirred to react for 1-2 h; finally, the system is heated to 50-80 DEG C, organic quaternary ammonium salt is added, and the system is continuously stirred to react for 30-60 min; after the reaction, the system is cooled to the room temperature, and the paint mist coagulant is prepared. The invention aims to overcome defects of the prior art and provides the preparation method of the environment-friendly, high-efficiency and low-cost hectorite paint mist coagulant.

Description

technical field [0001] The invention relates to the technical field of preparation of hectorite modification, in particular to a modified hectorite used as a coagulant and detackifier for paint mist wastewater treatment. Background technique [0002] In the modern automatic painting technology of large workpieces and components, especially in the field of automotive painting (such as automobiles, motorcycles, electric vehicles, etc.), most of them are automatically sprayed in closed spray booths. The spray booth has the function of collecting oversprayed paint, reducing the risk of contamination of workpieces during spraying, and protecting the safety of on-site workers. In the industrial coating production line, a lot of spray paint in the spray booth is not sprayed on the substrate, but is wasted in the form of paint mist. Generally speaking, overspray paint accounts for 20-60% of the total paint, which is not only extremely wasteful, but also directly leads to a series o...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/54C02F103/14
CPCC02F1/52C02F1/5245C02F1/5263C02F1/54C02F2103/14
Inventor 张天志张天毅
Owner JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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