CN109266185A - A kind of powdery paints and application thereof - Google Patents
A kind of powdery paints and application thereof Download PDFInfo
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- CN109266185A CN109266185A CN201811202391.XA CN201811202391A CN109266185A CN 109266185 A CN109266185 A CN 109266185A CN 201811202391 A CN201811202391 A CN 201811202391A CN 109266185 A CN109266185 A CN 109266185A
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- Prior art keywords
- powdery paints
- agent
- present
- polyester resin
- low temperature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention provides a kind of powdery paints and application thereof, the powdery paints include following weight percentage components: polyester resin 60-70%, how scaled fillers 20-30%, isocyanuric acid three-glycidyl ester 5-7%, flexibility agent 1-1.2% and low temperature curing agent 1-2%；The powdery paints that the present invention is prepared has preferable flexibility, adhesive force, resistance to cupping and resistance to low temperature, and the tank body etc. that can be used for freezing is cold to match industry.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of powdery paints and application thereof.
Background technique
With the progress of society and the improvement of people's living standards, people are also higher and higher to the cold requirement with industry, and
Cold industry of matching is mostly closed tank, is heated in coating process because unidirectional, causes tank body heating too slow, powder curing item is not achieved
Part, therefore the requirement to coating is also more harsh.Existing powdery paints is after spraying high temperature baking, in assembling process, table
Face flexibility is poor, and coating is easily burst in the biggish situation of the temperature difference, destroys the integrality of paint film, and rework rate is high, therefore cold matches
The problem of surface is easily burst during industry powder spraying, curing is still the difficult point and hot spot of this field research.
CN105885646A discloses a kind of nanoscale high-temperature resistant epoxy friendly coating, is made of the component of following parts by weight: poly-
Ester resin 40-55%, nano-powder 15-20%, coalescing agent 4.5-6%, promotor 0.3-0.6%, Ricinate 0.6-
0.8%, defoaming agent 0.4-0.5%, filler 15-20%；Nano-powder includes: nano-titanium dioxide, hollow glass micro-ball and sky
Heart ceramic microbead, wherein coalescing agent is propylene glycol monomethyl ether, propandiol butyl ether, any one in propylene glycol methyl ether acetate,
Ricinate is calgon, sodium metasilicate, any one in sodium disilicate, and defoaming agent is tributyl phosphate, phosphoric acid
Any one in dibutyl ester, silicone oil.The environmental protection coating material of invention preparation has preferable high temperature resistance, but does not refer to it
Resistance to cupping and lower temperature resistance.
CN104403525A discloses a kind of polyester resin powder coating, it is composed of the following raw materials by weight:
Polyester resin P933570-76, isocyanuric acid three-glycidyl ester 5-10, octylisothiazolinone 1-2, polyether-ether-ketone 2-3, gather
Sorb ester 800.6-1, jojoba oil 1-2, ceria 0.4-0.5, alkylolamides 1-3, sebacic acid dioctyl ester 2-3, four boron
Sour potassium 1-2, celestite powder 10-13, compounded mix 5-10；The powdery paints of invention preparation has preferable impact resistance, disappears
Photosensitiveness and the feature of environmental protection, but its lower temperature resistance is not referred to.
CN106433392A discloses a kind of water corrosion-resistant epoxy paint and preparation method thereof with obdurability, the coating
Including component A and B component, component A includes: that the cashew nut shell oil after aqueous rubber modified epoxy, iron oxide red, emulsification is polynary
It is alcohol resin lotion, aqueous zinc phosphate, nanometer native sulfate of barium, dispersing agent, defoaming agent, cosolvent, neutralizer, wetting agent, aqueous
Polyamide wax pulp, fumed silica, anti-flash rusting agent, distilled water；B component is superpower flexibility aqueous epoxy curing agent.It is made
Preparation Method is that component A and B component are made by the proportion paint of 6:1.The invention preparation water corrosion-resistant epoxy paint have compared with
Good impact property, flexility, resistance to cupping and freeze-thaw resistance, but its adhesion is poor to be improved.
Therefore, exploitation adhesion is good, flexibility is good, the powdery paints of resistance to cupping and resistance to low temperature is still this field research
Hot spot.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of powdery paints and application thereof；The powder
Last coating has both preferable flexibility, adhesive force, resistance to cupping and resistance to low temperature, and the tank body etc. that can be used for freezing is cold to match industry.
To achieve this purpose, the present invention adopts the following technical scheme:
On the one hand, the present invention provides a kind of powdery paints, including following weight percentage components:
In the present invention, the low temperature curing agent is that solidification temperature is lower than 10 DEG C, such as 10 DEG C, 5 DEG C, 0 DEG C, -5 DEG C, -10
DEG C, -15 DEG C, -20 DEG C etc..
In the present invention, the weight percent of the polyester resin is 60-70%, for example, 60%, 61%, 62%, 63%,
64%, 65%, 66%, 67%, 68%, 69%, 70% etc..
In the present invention, it is described how the weight percent of scaled fillers be 20-30%, such as 20%, 21%, 22%, 23%,
24%, 25%, 26%, 27%, 28%, 29%, 30% etc..
The present invention select how scaled fillers have stable partial size and good oil absorption, on the one hand can ensure that different batches
On the other hand stability between secondary product can increase the mechanical performance of paint film；When selection how scaled fillers mesh number be lower than 250 mesh
When, the mechanical performance of paint film can reduce, and the stability between different batches is slightly poor；When selection how scaled fillers mesh number it is excessively high
When, it is able to satisfy preferable effect, but the cost of product can be greatly increased, it is unfavorable for industrial profit.
In the present invention, the weight percent of the isocyanuric acid three-glycidyl ester is 5-7%, for example, 5%, 5.5%,
6%, 6.5%, 7% etc..
In the present invention, the weight percent of the flexibility agent is 1-1.2%, for example, 1%, 1.05%, 1.1%, 1.15%,
1.2% etc..
In the present invention, the weight percent of the low temperature curing agent is 1-2%, for example, 1%, 1.1%, 1.2%, 1.3%,
1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2% etc..
Isocyanuric acid three-glycidyl ester and low temperature curing agent are used cooperatively by the present invention, have greatly accelerated the solidification of paint film
Effect further increases paint film to the adhesion property of tank body.
The present invention uses low temperature curing agent and flexibility agent collaboration, and can only can unidirectionally be heated in refrigeration tank body leads to tank body liter
In the case that temperature is too slow, the performance of the anti-cupping of shock resistance of tank body is improved, and paint film can be increased to the adhesion property of tank body, from
And solve the problems, such as low temperature to be unidirectionally heated in situation that surface is easily burst during powder spraying, curing.
Preferably, the powdery paints includes following weight percentage components:
It is further preferred that the powdery paints includes following weight percentage components:
In the present invention, the weight average molecular weight of the polyester resin is 350-450, for example, 350,360,370,380,390,
400,410,420,430,440,450 etc., preferably 400.
In the present invention, the polyester resin is DSM polyester resin.
In the present invention, it is described how the mesh number of scaled fillers be 250-350, such as 250,260,270,280,290,300,
310,320,330,340,350 etc., preferably 300.
In the present invention, the flexibility agent is TL815 and/or TL600, preferably TL815.
In the present invention, the low temperature curing agent is imidazole curing agent, preferably diphenyl-imidazole quinoline.
In the present invention, the powdery paints further include 3-5% (such as 3%, 3.2%, 3.5%, 3.8%, 4%, 4.2%,
4.5%, processing aid 4.8%, 5% etc.).
In the present invention, the processing aid includes one of levelling agent, antioxidant or uvioresistant photo etching or at least two
Combination.
On the other hand, the present invention provides a kind of purposes of above-mentioned powdery paints, and the powdery paints is for the tank body that freezes.
A kind of application method of powdery paints provided by the invention is as follows: by powder coating electrostatic spraying in workpiece surface,
10-15min is toasted at 180-220 DEG C, forms coating, coating layer thickness is preferably 60-80 μm.
Compared with the existing technology, the invention has the following advantages:
The raw material for preparing of powdery paints provided by the invention includes DSM polyester resin, have preferable product stability and
Impact resistance；Further include how scaled fillers, there is stable partial size and good oil absorption, DSM polyester resin of arranging in pairs or groups can be into
One step ensures the stability between different batches of product, and increases the mechanical performance of paint film；Isocyanuric acid three-glycidyl ester and low
Warm curing agent is used cooperatively the solidification effect for having greatly accelerated paint film, further increases paint film to the adhesion property of tank body；Low temperature
Curing agent and flexibility agent collaboration use, and can improve in the case where the tank body that freezes, which can only unidirectionally be heated, causes tank body heating too slow
The performance of the anti-cupping of the shock resistance of tank body, and paint film can be increased to the adhesion property of tank body, to solve cold with industry powder
The problem that surface is easily burst in spraying solidification process.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.Those skilled in the art should be bright
, the described embodiments are merely helpful in understanding the present invention, should not be regarded as a specific limitation of the invention.
Embodiment 1
The present embodiment provides a kind of powdery paints, including following weight percentage components:
Wherein, the weight average molecular weight of DSM polyester resin is 400, and how the mesh number of scaled fillers is 300.
Embodiment 2
The present embodiment provides a kind of powdery paints, including following weight percentage components:
Wherein, the weight average molecular weight of polyester resin is 420, and how the mesh number of scaled fillers is 320, and the processing aid includes
Levelling agent, antioxidant and uvioresistant photo etching.
Embodiment 3
The present embodiment provides a kind of powdery paints, including following weight percentage components:
Wherein, the weight average molecular weight of polyester resin is 350, and how the mesh number of scaled fillers is 350, and the processing aid includes
Levelling agent, antioxidant and uvioresistant photo etching.
Embodiment 4
The present embodiment provides a kind of powdery paints, including following weight percentage components:
Wherein, the weight average molecular weight of polyester resin is 450, and how the mesh number of scaled fillers is 350, and the processing aid includes
Levelling agent, antioxidant and uvioresistant photo etching.
Embodiment 5
The present embodiment provides a kind of powdery paints, including following weight percentage components:
Wherein, the weight average molecular weight of polyester resin is 350, and how the mesh number of scaled fillers is 250, and the processing aid includes
Levelling agent, antioxidant and uvioresistant photo etching.
Embodiment 6
The difference from embodiment 1 is that how the mesh number of scaled fillers is 200 mesh, remaining component and component proportion with implementation
Example 1 is identical.
Embodiment 7
The difference from embodiment 1 is that how the mesh number of scaled fillers is 400 mesh, remaining component and component proportion with implementation
Example 1 is identical.
Comparative example 1
The difference from embodiment 1 is that replacing isocyanuric acid three-glycidyl ester with the hydroxyalkyl amide of equivalent；Other groups
Divide and dosage is same as Example 1.
Comparative example 2
Difference with embodiment 1 is only that do not include diphenyl-imidazole quinoline in the powdery paints of this comparative example, and isocyanide is urinated
The additive amount of sour three-glycidyl ester be embodiment 1 in the additive amount of isocyanuric acid three-glycidyl ester and diphenyl-imidazole quinoline it
With proportional assignment, the addition weight percent of isocyanuric acid three-glycidyl ester is 8%.
Comparative example 3
Difference with embodiment 1 is only that in the powdery paints of this comparative example not include isocyanuric acid three-glycidyl ester,
And the additive amount of diphenyl-imidazole quinoline be embodiment 1 in the additive amount of isocyanuric acid three-glycidyl ester and diphenyl-imidazole quinoline it
With proportional assignment, the addition weight percent of diphenyl-imidazole quinoline is 8%.
Comparative example 4
Difference with embodiment 1 is only that in the powdery paints of this comparative example not include TL815, and diphenyl-imidazole quinoline
Additive amount is the sum of TL815 and the additive amount of diphenyl-imidazole quinoline in embodiment 1, is divided in portion, and diphenyl-imidazole quinoline adds
Add weight percentage is 3%.
Comparative example 5
Difference with embodiment 1 is only that do not include diphenyl-imidazole quinoline in the powdery paints of this comparative example, and TL815
Additive amount is the sum of TL815 and the additive amount of diphenyl-imidazole quinoline in embodiment 1, proportional assignment, the addition weight hundred of TL815
Divide than being 3%.
The powder coating electrostatic spraying that above-described embodiment 1-7 and comparative example 1-5 are provided is on workpiece surface, at 200 DEG C
Lower baking 10min forms the coating of 80 μ m-thicks.
The property of coating is tested, test method is as follows:
Hardness: it is measured with pencil hardometer；
It pulls open method adhesive force: being measured according to GB/T5210-2006 " paint and varnish pulls open method adhesion test "；
Impact strength: it is measured according to GB/T 1732-93 " paint film impact resistance measuring method "；
Cupping experiment: it is measured according to GB/G9753-2007 " paint and varnish cupping test "；
Flexibility: it is measured according to GB/T1731-1993 " paint film flexibility measuring method "；
The result of above-mentioned test is as shown in table 1 below:
Table 1
As shown in Table 1, the present invention is matched under specific ratio by each component, obtained it is a kind of have compared with
High rigidity, adhesive force, impact strength, resistance to cupping and flexible powdery paints.By pair of embodiment 1-5 and embodiment 6-7
Than it is found that ought how the mesh number of the scaled fillers range given lower than the present invention, then the mechanical performance of the powdery paints prepared can drop
It is low；When how the mesh number of scaled fillers is higher than the given range of the present invention, the effect of the powdery paints of preparation is still preferable, but its
Higher cost is unfavorable for industrial production；By the comparison of embodiment 1 and comparative example 1 it is found that isocyanuric acid three-glycidyl ester uses it
His curing agent replaces, then the solidification effect of the powdery paints prepared is poor, the impact resistance of paint film and under the adhesive force of tank body
Drop；By the comparison of embodiment 1 and comparative example 2-3 it is found that when lacking isocyanuric acid three-glycidyl ester and hexichol in powdery paints
When one of in base imidazoline, then the impact resistance of paint film and the adhesive force of tank body is declined；By embodiment 1 and comparative example
The comparison of 4-5 it is found that when lacking one of in TL815 and diphenyl-imidazole quinoline in powdery paints, then the adhesive force of paint film,
Impact strength, resistance to cupping and flexibility decline；Therefore, the technical solution of powdery paints provided by the invention can guarantee
The best performance of the powdery paints arrived.
The Applicant declares that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention not office
It is limited to this, it should be clear to those skilled in the art, any to belong to those skilled in the art and take off in the present invention
In the technical scope of dew, any changes or substitutions that can be easily thought of, and all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of powdery paints, which is characterized in that the powdery paints includes following weight percentage components:
The low temperature curing agent is the curing agent that solidification temperature is lower than 10 DEG C.
2. powdery paints according to claim 1, which is characterized in that the powdery paints includes following weight percent
Component:
3. powdery paints according to claim 1 or 2, which is characterized in that the powdery paints includes following weight percent
The component of ratio:
4. powdery paints according to claim 1-3, which is characterized in that the weight average molecular weight of the polyester resin
For 350-450, preferably 400；
Preferably, the polyester resin is DSM polyester resin.
5. powdery paints according to claim 1-4, which is characterized in that described how the mesh number of scaled fillers is
250-350, preferably 300.
6. powdery paints according to claim 1-5, which is characterized in that the flexibility agent be TL815 and/or
TL600, preferably TL815.
7. powdery paints according to claim 1-6, which is characterized in that the low temperature curing agent is solid for imidazoles
Agent, preferably diphenyl-imidazole quinoline.
8. powdery paints according to claim 1-7, which is characterized in that the powdery paints further includes 3-5%
Processing aid.
9. powdery paints according to claim 8, which is characterized in that the processing aid includes levelling agent, antioxidant or anti-purple
In outer photo etching any one or at least two combination.
10. a kind of application such as the described in any item powdery paints of claim 1-9 in refrigeration tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811202391.XA CN109266185A (en) | 2018-10-16 | 2018-10-16 | A kind of powdery paints and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811202391.XA CN109266185A (en) | 2018-10-16 | 2018-10-16 | A kind of powdery paints and application thereof |
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| CN109266185A true CN109266185A (en) | 2019-01-25 |
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| CN201811202391.XA Pending CN109266185A (en) | 2018-10-16 | 2018-10-16 | A kind of powdery paints and application thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928503A (en) * | 2009-06-19 | 2010-12-29 | 扬州市金晨化工有限公司 | Anti-corrosion and super-weatherability powder coating and preparation process thereof |
| CN104513591A (en) * | 2014-12-29 | 2015-04-15 | 浙江明泉工业涂装有限公司 | Medium-and-low temperature cured thinly-coated powder coating for household electrical appliance and preparation method for medium-and-low temperature cured thinly-coated powder coating |
| CN104559691A (en) * | 2014-12-25 | 2015-04-29 | 江苏兰陵高分子材料有限公司 | Polymer composite for heat transfer printing low-temperature crosslinking and preparation method thereof |
| CN106280914A (en) * | 2016-08-04 | 2017-01-04 | 浙江超浪新材料有限公司 | A kind of weather resistant metal pattern effect list is coated with powdery paints |
| CN106398482A (en) * | 2016-08-30 | 2017-02-15 | 安徽美佳新材料股份有限公司 | Low-temperature curing hammer tone powder coating and preparation method thereof |
-
2018
- 2018-10-16 CN CN201811202391.XA patent/CN109266185A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928503A (en) * | 2009-06-19 | 2010-12-29 | 扬州市金晨化工有限公司 | Anti-corrosion and super-weatherability powder coating and preparation process thereof |
| CN104559691A (en) * | 2014-12-25 | 2015-04-29 | 江苏兰陵高分子材料有限公司 | Polymer composite for heat transfer printing low-temperature crosslinking and preparation method thereof |
| CN104513591A (en) * | 2014-12-29 | 2015-04-15 | 浙江明泉工业涂装有限公司 | Medium-and-low temperature cured thinly-coated powder coating for household electrical appliance and preparation method for medium-and-low temperature cured thinly-coated powder coating |
| CN106280914A (en) * | 2016-08-04 | 2017-01-04 | 浙江超浪新材料有限公司 | A kind of weather resistant metal pattern effect list is coated with powdery paints |
| CN106398482A (en) * | 2016-08-30 | 2017-02-15 | 安徽美佳新材料股份有限公司 | Low-temperature curing hammer tone powder coating and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王松: "《金属材涂层工》", 31 May 2011, 中国建材工业出版社 * |
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Application publication date: 20190125 |