CN1974429A - Lacquer mist coagulant and its prepn and application - Google Patents
Lacquer mist coagulant and its prepn and application Download PDFInfo
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- CN1974429A CN1974429A CN 200610105030 CN200610105030A CN1974429A CN 1974429 A CN1974429 A CN 1974429A CN 200610105030 CN200610105030 CN 200610105030 CN 200610105030 A CN200610105030 A CN 200610105030A CN 1974429 A CN1974429 A CN 1974429A
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- lacquer mist
- mist coagulant
- water
- coagulant
- lacquer
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Abstract
The present invention discloses one kind of lacquer mist coagulant with excellent viscosity reducing and coagulating effect on both solvent and water thinned paint. The lacquer mist coagulant consists of nitrogen-contain linear polymer and amphoteric metal salt in the weight ratio of 1 to 0.1-1 to 20. The present invention also provides the preparation process of the lacquer mist coagulant, and the preparation process is simple, low in cost and high in yield. The lacquer mist coagulant of the present invention is applied in treating circular water of wet lacquer mist eliminating system.
Description
Technical field
The invention belongs to the environmental pollution treatment technology field, relate to the lacquer mist coagulant in a kind of wet type spray chamber, the paint line circulating water treatment; The invention still further relates to the preparation method and the application of this lacquer mist coagulant simultaneously.
Background technology
In automobile, household electrical appliances, furniture industry and partly plastic processing industry, painting operation mostly adopts modern spraying technology, in encloses container formula paint spray booth or painting workshop carry out, and be equipped with give accordingly, exhaust system, wet type remove the coating cloud system.The main purpose that this wet type is removed the coating cloud system is: 1) remove over-sprayed paint fog; 2) prevent that coating cloud is to be painted pollution; 3) the existing staff's that often sprays paint of protection health.The normal wet type spray chamber that adopts utilizes the absorption agent of water conduct in painting operation, constitutes spray chamber circulating water.Its principle of work is: the side of the line that sprays paint in the paint spray booth (exit duct inlet) is provided with cascade or cascade-washing combined system, the over-sprayed paint fog that is brought by the air draft air-flow is positive contact with cascade (and spray water) collision, paints to be eluted in the water formation paint particle and to be taken away by water.After adopting special process to isolate paint, water continues to recycle.
In order to keep the operation of recirculated water long-term safety, cross and spray paint and from recirculated water, to separate.This just requires coating cloud to be separated with convenient by abundant unsticking; The inharmonious process of paint is carried out at aqueous phase, usually need in water, add specific chemical (being commonly referred to disappear stick or lacquer mist coagulant), make the paint that carries in the water fully inharmonious and from water, separate smoothly, adhere to paint spray booth's wall, pipe pump inwall, draught fan impeller, flume wall etc. and locate to produce and stop up to prevent it.Inharmonious paint general floating or under be sunken in the water.Yet, from water, separate paint effectively to prevent that block system from being very expensive.
Summary of the invention
The purpose of this invention is to provide a kind of lacquer mist coagulant that solvent-borne type, water-borne coatings is had good visbreaking, cohesion;
Another object of the present invention provides the preparation method of this lacquer mist coagulant;
A further object of the invention just provides this lacquer mist coagulant and removes application in the circulating water treatment of coating cloud system in wet type.
Lacquer mist coagulant of the present invention is combined by the linear polymeric polymkeric substance that contains nitrogen and the amphoteric metal salt part by weight with 1: 0.1～1: 20.
The described structural formula that contains the linear polymeric polymkeric substance of nitrogen is:
[NHCH
2OH]
n-, n=5～30 wherein.
Muriate or vitriol that described amphoteric metal salt is zinc, iron, aluminium, magnesium, or be the muriate of zinc, iron, aluminium, magnesium and the mixture of vitriol; When amphoteric metal salt is the mixture of the muriate of zinc, iron, aluminium, magnesium and vitriol, can arbitrary combination, also can be arbitrarily than mixing.
The preparation method of lacquer mist coagulant of the present invention comprises following processing step:
1. ammonification derivative, organic aldehyde are joined in the water of 120～180 weight parts with weight ratio part of 10～50 parts, 20～45 parts respectively, stir and make its thorough mixing; The mineral acid that adds 0.5～5 weight part is adjusted mixture pH value to 0.9～4.0, is heated to 60～95 ℃, react 1.2～2.5 hours postcooling to 50～55 ℃, adding entry, to be diluted to characteristic density be 1.05g/ml, and solid content is 7～20%, aging 3～30 hours, get component I;
2. with component I and amphoteric metal salt weight ratio thorough mixing, promptly get lacquer mist coagulant with 1: 0.1～1: 20.
In the preparation of described lacquer mist coagulant, the ammonification derivatives class is at least a in trimeric cyanamide, Dicyanodiamide, urea, the Padil; When the ammonification derivative was mixture, its each component can be arbitrarily than mixing.
Organic aldehyde be formaldehyde, acetaldehyde, oxalic dialdehyde, at least a in the propionic aldehyde, polyoxymethylene; Mineral acid is at least a in sulfuric acid, hydrochloric acid, phosphoric acid, the nitric acid.When organic aldehyde was mixture, its each component can be arbitrarily than mixing
In the preparation of described lacquer mist coagulant, amphoteric metal salt is the muriate or the vitriol of zinc, iron, aluminium, magnesium, or is the muriate of zinc, iron, aluminium, magnesium and the mixture of vitriol (in the mixture each component can arbitrarily than mixing).
In the preparation of described lacquer mist coagulant, temperature of reaction the best is 50～75 ℃; Stirring velocity is that (the best is 60～120rpm) to 50～200rpm; The optimum range of mixture pH value is adjusted at 1.2～2.5 in the reaction process; Optimum reacting time 1.2～2.5 hours.
The lacquer mist coagulant of the present invention's preparation is colourless to light blue liquid, and preservation period is more than 90 days.
Lacquer mist coagulant of the present invention is applied in wet type and removes in the processing of coating cloud systemic circulation water.
Lacquer mist coagulant of the present invention is handled the method that wet type is removed coating cloud systemic circulation water, may further comprise the steps:
1. adjust pH value to 8～10 of recirculated water;
2. the lacquer mist coagulant that adds 0.0006～0.002 times of recycled-water quality stirs 1～5min, leaves standstill;
3. the condensation product in the partitioning cycle water.
Lacquer mist coagulant of the present invention is handled the method that wet type is removed coating cloud systemic circulation water, can also be used that (wherein the polymer coagulant aids is commercially available amide polymer or its modified product with the polymer coagulant aids, molecular weight is 600～2,000 ten thousand, negatively charged ion or positively charged ion all can), can help inharmoniously to take off steady coating cloud and flocculate rapidly, from water, separate.Specifically may further comprise the steps:
1. adjust pH value to 8～10 of recirculated water;
2. the lacquer mist coagulant that adds 0.0006～0.002 times of recycled-water quality;
3. the polymer coagulant aids that adds 0.001～0.003 times of amount of recycled-water quality stirs 1～5min, leaves standstill;
4. the condensation product in the partitioning cycle water makes the cohesion of over-sprayed paint fog unsticking, flocculation in the water separate from water with the form of lacquer slag.
The use properties of lacquer mist coagulant of the present invention can be confirmed from following experiment:
In being housed, the 1000ml beaker of whipping appts adds the 500ml tap water, adjust pH to 9.0～10.0, add the 2.5g lacquer mist coagulant, under agitation in water, drip the car finish paint 6g of any brand, stir (200～300rpm) 1～2min fast, 0.5～1% the organic polymer coagulant aids that adds same amount stirs at a slow speed that (60～90rpm) 3～5min leave standstill 10min.Observations: paint viscosity is porous block and bubbles through the water column by completely destroy; Walls of beaker and stir shaft do not have tangible bur, and water quality is limpid.
The present invention compared with prior art has the following advantages:
1, in the lacquer mist coagulant of the present invention, the linear polymeric polymeric constituent I that contains nitrogen has the positively charged ion of certain density on its molecular chain under acidic conditions, can bring into play the charge neutrality effect well, destroys the colloid that paint particles forms, and makes it take off steady cohesion; Its linearity molecular structure provides excellent adsorption bridging effect simultaneously, makes the aggregate flocculation of unstability be big and close flocs unit and water sepn.Amphoteric metal salt of the present invention can produce active precipitation under weak basic condition, make lacquer grain surface detackification, therefore multiple solvent-borne type, water-borne coatings is had good visbreaking, cohesion, can bring into play visbreaking, cohesion under 400～3000ppm lower concentration.
2, the present invention prepares that the raw materials cost of lacquer mist coagulant is low, technology is simple, makes productive rate height, the cost of lacquer mist coagulant finished product low.
3, the wet type that is applied in of lacquer mist coagulant of the present invention is removed in the processing of coating cloud systemic circulation water, and handling procedure is simple, and is easy to operate, makes over-sprayed paint fog unsticking cohesion quickly and efficiently, flocculation in the water, separates from water with the form of lacquer slag.
Embodiment
The preparation method of embodiment 1, lacquer mist coagulant of the present invention comprises following processing step:
1. trimeric cyanamide, formaldehyde are joined in the water of 120 weight parts with weight ratio part of 10 parts, 20 parts respectively, stir and make its thorough mixing; The hydrochloric acid (37%) that adds 0.5 weight part is adjusted mixture pH value to 0.9, is heated to 95 ℃, react 1.2 hours postcooling to 50～55 ℃, and adding entry, to be diluted to characteristic density be 1.05g/ml, and solid content is 7～20%, wears out 3 hours, must component I;
2. with component I and iron trichloride weight ratio thorough mixing, promptly get lacquer mist coagulant with 1: 0.1.
The preparation method of embodiment 2, lacquer mist coagulant of the present invention comprises following processing step:
1. Dicyanodiamide, acetaldehyde are joined in the water of 130 weight parts with weight ratio part of 20 parts, 20 parts respectively, stir and make its thorough mixing; The sulfuric acid (98%) that adds 1 weight part is adjusted mixture pH value to 1.0, is heated to 60 ℃, react 2 hours postcooling to 50～55 ℃, and adding entry, to be diluted to characteristic density be 1.05g/ml, and solid content is 7～20%, wears out 5 hours, must component I;
2. with component I and ferric sulfate weight ratio thorough mixing, promptly get lacquer mist coagulant with 1: 1.
The preparation method of embodiment 3, lacquer mist coagulant of the present invention comprises following processing step:
1. urea, oxalic dialdehyde are joined in the water of 140 weight parts with weight ratio part of 30 parts, 45 parts respectively, stir and make its thorough mixing; The phosphoric acid that adds 2 weight parts is adjusted mixture pH value to 1.5, is heated to 70 ℃, react 1.5 hours, is cooled fast to 50～55 ℃, and adding entry, to be diluted to characteristic density be 1.05g/ml, and solid content is 7～20%, wears out 10 hours, must component I;
2. with component I and aluminum chloride weight ratio thorough mixing, promptly get lacquer mist coagulant with 1: 5.
The preparation method of embodiment 4, lacquer mist coagulant of the present invention comprises following processing step:
1. Padil, propionic aldehyde are joined in the water of 160 weight parts with weight ratio part of 50 parts, 30 parts respectively, stir and make its thorough mixing; The nitric acid that adds 3 weight parts is adjusted mixture pH value to 2.0, is heated to 75 ℃, react to be cooled fast to 50～55 ℃ after 2.5 hours, and adding entry, to be diluted to characteristic density be 1.05g/ml, and solid content is 7～20%, wears out 15 hours, must component I;
2. with component I and zinc chloride weight ratio thorough mixing, promptly get lacquer mist coagulant with 1: 10.
The preparation method of embodiment 5, lacquer mist coagulant of the present invention comprises following processing step:
1. 20 parts of 25 parts of trimeric cyanamides, 15 parts of Dicyanodiamides, 20 parts in formaldehyde, oxalic dialdehyde are joined with weight part in the water of 180 weight parts, stir and make its thorough mixing; The hydrochloric acid that adds 4 weight parts is adjusted mixture pH value to 3.0, is heated to 80 ℃, react 1.8 hours, is cooled fast to 50～55 ℃, and adding entry, to be diluted to characteristic density be 1.05g/ml, and solid content is 7～20%, wears out 25 hours, must component I;
2. with component I and sal epsom weight ratio thorough mixing, promptly get lacquer mist coagulant with 1: 15.
The preparation method of embodiment 6, lacquer mist coagulant of the present invention comprises following processing step:
1. the weight part with 10 parts of trimeric cyanamides, 10 parts of Dicyanodiamides, 10 parts of Padils, 45 parts of polyoxymethylene joins in the water of 180 weight parts, stirs to make its thorough mixing; The sulfuric acid that adds 5 weight parts is adjusted mixture pH value to 4.0, is heated to 70 ℃, react 2.5 hours postcooling to 50～55 ℃, and adding entry, to be diluted to characteristic density be 1.05g/ml, and solid content is 7～20%, wears out 30 hours, must component I;
2. with component I and the Tai-Ace S 150 weight ratio thorough mixing with 1: 20, thing promptly gets lacquer mist coagulant.
Embodiment 7, lacquer mist coagulant of the present invention are handled the method that wet type is removed coating cloud systemic circulation water:
1. adjust the pH value to 8 of recirculated water;
2. the lacquer mist coagulant that adds 0.0006 times of recycled-water quality stirs 1～5min, leaves standstill;
3. the condensation product in the partitioning cycle water.
Embodiment 8, lacquer mist coagulant of the present invention are handled the method that wet type is removed coating cloud systemic circulation water:
1. adjust the pH value to 9 of recirculated water;
2. the lacquer mist coagulant that adds 0.002 times of recycled-water quality stirs 1～5min;
3. the condensation product in the partitioning cycle water.
Embodiment 9, lacquer mist coagulant of the present invention are handled the method that wet type is removed coating cloud systemic circulation water:
1. adjust the pH value to 10 of recirculated water;
2. the lacquer mist coagulant that adds 0.001 times of recycled-water quality stirs 1～5min, leaves standstill;
3. the amide polymer coagulant aids that adds 0.001 times of amount of recycled-water quality stirs 1～5min;
4. the condensation product in the partitioning cycle water.
Embodiment 10, lacquer mist coagulant of the present invention are handled the method that wet type is removed coating cloud systemic circulation water:
1. adjust the pH value to 9 of recirculated water;
2. the lacquer mist coagulant that adds 0.0008 times of recycled-water quality stirs 1～5min;
3. the amide polymer coagulant aids that adds 0.003 times of amount of recycled-water quality stirs 1～5min, leaves standstill;
4. the condensation product in the partitioning cycle water.
Claims (10)
1, a kind of lacquer mist coagulant is characterized in that: combined by the linear polymeric polymkeric substance that contains nitrogen and the amphoteric metal salt part by weight with 1: 0.1～1: 20.
2, lacquer mist coagulant as claimed in claim 1 is characterized in that: the described structural formula that contains the linear polymeric polymkeric substance of nitrogen is:
[NHCH
2OH]
n-, n=5～30 wherein.
3, lacquer mist coagulant as claimed in claim 1 is characterized in that: muriate or vitriol that described amphoteric metal salt is zinc, iron, aluminium, magnesium, or be the muriate of zinc, iron, aluminium, magnesium and the mixture of vitriol.
4, a kind of preparation method of lacquer mist coagulant comprises following processing step:
1. ammonification derivative, organic aldehyde are joined in the water of 120～180 weight parts with weight ratio part of 10～50 parts, 20～45 parts respectively, stir and make its thorough mixing; The mineral acid that adds 0.5～5 weight part is adjusted mixture pH value to 0.9～4.0, is heated to 60～95 ℃, react 1.2～2.5 hours postcooling to 50～55 ℃, adding entry, to be diluted to characteristic density be 1.05g/ml, and solid content is 7～20%, aging 3～30 hours, get component I;
2. with component I and amphoteric metal salt weight ratio thorough mixing, promptly get lacquer mist coagulant with 1: 0.1～1: 20.
5, as the preparation method of lacquer mist coagulant as described in the claim 4, it is characterized in that: described ammonification derivatives class is at least a in trimeric cyanamide, Dicyanodiamide, urea, the Padil.
6, as the preparation method of lacquer mist coagulant as described in the claim 4, it is characterized in that: described organic aldehyde be formaldehyde, acetaldehyde, oxalic dialdehyde, at least a in the propionic aldehyde, polyoxymethylene.
7, as the preparation method of lacquer mist coagulant as described in the claim 4, it is characterized in that: described mineral acid is at least a in sulfuric acid, hydrochloric acid, phosphoric acid, the nitric acid.
8, as the preparation method of lacquer mist coagulant as described in the claim 4, it is characterized in that: muriate or vitriol that described amphoteric metal salt is zinc, iron, aluminium, magnesium, or be the muriate of zinc, iron, aluminium, magnesium and the mixture of vitriol.
9, a kind of lacquer mist coagulant is applied in wet type except that in the processing of coating cloud systemic circulation water.
10, handle the method that wet type is removed coating cloud systemic circulation water as lacquer mist coagulant as described in the claim 8, may further comprise the steps:
1. adjust pH value to 8～10 of recirculated water;
2. the lacquer mist coagulant that adds 0.0006～0.002 times of recycled-water quality stirs 1～5min, leaves standstill; Or add the lacquer mist coagulant of 0.0006～0.002 times of recycled-water quality and the polymer coagulant aids of 0.001～0.003 times of amount of recycled-water quality, and stir 1～5min, leave standstill;
3. the condensation product in the partitioning cycle water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101050304A CN1974429B (en) | 2006-08-17 | 2006-08-17 | Lacquer mist coagulant and its preparation and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101050304A CN1974429B (en) | 2006-08-17 | 2006-08-17 | Lacquer mist coagulant and its preparation and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1974429A true CN1974429A (en) | 2007-06-06 |
| CN1974429B CN1974429B (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101050304A Expired - Fee Related CN1974429B (en) | 2006-08-17 | 2006-08-17 | Lacquer mist coagulant and its preparation and application |
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|---|---|
| CN (1) | CN1974429B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830548A (en) * | 2010-05-25 | 2010-09-15 | 武汉理工大学 | Paint mist coagulant |
| CN102390886A (en) * | 2011-07-07 | 2012-03-28 | 盐城工学院 | Preparation of organic/inorganic combined coating deadhesion agent and application of organic/inorganic combined coating deadhesion agent to spray painting wastewater |
| CN102874949A (en) * | 2012-09-26 | 2013-01-16 | 跃成环保科技(太仓)有限公司 | Novel energy-saving and environment-friendly paint water separation purification system |
| CN103693724A (en) * | 2013-12-31 | 2014-04-02 | 湖南金裕化工有限公司 | Paint mist coagulant and manufacturing method thereof |
| CN103910423A (en) * | 2014-04-23 | 2014-07-09 | 武汉理工大学 | Polysilicic acid modified melamine coagulant for paint fog and preparation method thereof |
| CN106693558A (en) * | 2016-05-27 | 2017-05-24 | 荆门市拓达科技有限公司 | Adhesive for spray mist purification |
| CN111333165A (en) * | 2020-03-13 | 2020-06-26 | 西安三化机电科技有限公司 | Paint mist coagulant and preparation method thereof |
-
2006
- 2006-08-17 CN CN2006101050304A patent/CN1974429B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830548A (en) * | 2010-05-25 | 2010-09-15 | 武汉理工大学 | Paint mist coagulant |
| CN102390886A (en) * | 2011-07-07 | 2012-03-28 | 盐城工学院 | Preparation of organic/inorganic combined coating deadhesion agent and application of organic/inorganic combined coating deadhesion agent to spray painting wastewater |
| CN102874949A (en) * | 2012-09-26 | 2013-01-16 | 跃成环保科技(太仓)有限公司 | Novel energy-saving and environment-friendly paint water separation purification system |
| CN103693724A (en) * | 2013-12-31 | 2014-04-02 | 湖南金裕化工有限公司 | Paint mist coagulant and manufacturing method thereof |
| CN103910423A (en) * | 2014-04-23 | 2014-07-09 | 武汉理工大学 | Polysilicic acid modified melamine coagulant for paint fog and preparation method thereof |
| CN103910423B (en) * | 2014-04-23 | 2016-02-03 | 武汉理工大学 | A kind of polysilicon acid modified cyanurotriamide lacquer mist coagulant and preparation method thereof |
| CN106693558A (en) * | 2016-05-27 | 2017-05-24 | 荆门市拓达科技有限公司 | Adhesive for spray mist purification |
| CN111333165A (en) * | 2020-03-13 | 2020-06-26 | 西安三化机电科技有限公司 | Paint mist coagulant and preparation method thereof |
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|---|---|
| CN1974429B (en) | 2011-05-11 |
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Granted publication date: 20110511 |