CN109762449A - A kind of bloom self-cleaning powder paint and preparation method thereof - Google Patents
A kind of bloom self-cleaning powder paint and preparation method thereof Download PDFInfo
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- CN109762449A CN109762449A CN201811515509.4A CN201811515509A CN109762449A CN 109762449 A CN109762449 A CN 109762449A CN 201811515509 A CN201811515509 A CN 201811515509A CN 109762449 A CN109762449 A CN 109762449A
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Abstract
The invention discloses a kind of bloom self-cleaning powder paints and preparation method thereof.In parts by mass, including following components: 30~50 parts of hydroxyl telechelic polyester resins, 3~15 parts of fluorocarbon resins, 15~75 parts of curing agent, 1~10 part of modified manometer silicon dioxide, 0~2 part of pigment, 10~40 parts of fillers, 0~15 part of auxiliary agent.Powdery paints of the invention has excellent hydrophobic performance, characteristic also strong with good weather resistance and bloom, adhesive force, impact resistance simultaneously, can be used for the coating on the surfaces such as coating and indoor equipment, the smoke exhaust ventilator on the surfaces such as outdoor equipment, guardrail, billboard.
Description
Technical field
The present invention relates to art of powder coatings more particularly to a kind of bloom self-cleaning powder paint and preparation method thereof.
Background technique
With getting worse for air pollution and dust pollution, the road protective fence in city, the surfaces such as advertising display board
Coating is by increasingly severe erosion.These need constantly to clean the cleaning that just can guarantee coating surface and entire city
City it is clean and tidy with it is clean, this process needs to expend a large amount of man power and material.In addition, the smoke exhaust ventilator and metal of current household
The surfaces such as dining table mostly use greatly powder paint, this coating part makes using polyurethane system, higher cost, a part
It is common indoor powdery paints, greasy dirt not easy cleaning needs frequent cleaning process, not only causes the wave of water resource
Take, can also expend many manpowers.Therefore, it is necessary to research and develop a kind of powdery paints easy to clean, it is applied to highway
Guardrail, bridge guardrail, advertising display board, behind the surfaces such as smoke exhaust ventilator and metal dining table, the pollutants such as dust or greasy dirt are not easy to stick
It is attached, or be also easy to rinse or wipe by rainwater or rag etc. after adherency clean.
CN105482633A discloses a kind of easy cleaning powdery paints of epoxy polyester systems, and epoxy resin therein is weather-proof
Property it is bad, calcium carbonate the bad problem such as is also easy to appear dusting, falls off in outdoor application, and therefore, the powder of the patent disclosure applies
Material is not suitable in outdoor application；And CN107760170A discloses a kind of preparation method of self-cleaning powder paint, however wherein
Using linear phenolic epoxy resin, the weatherability of novolac epoxy resin is general, is also easy to appear dusting in outdoor application, falls off
Etc. bad problem, to lose the self-cleaning function of coating；CN103194140A then discloses a kind of extra-weather-proof powder of automatically cleaning
Coating and preparation method thereof, wherein using anatase thpe white powder, anatase thpe white powder will form electricity after receiving ultraviolet light irradiation
Son-hole pair, the oxygen trapped electron of titanium dioxide surface therein form negative oxygen ion, and negative oxygen ion has very strong energy of oxidation
Power can decompose terminal carboxyl polyester resin and part inorganic matter, in addition, the patent is terminal carboxyl polyester system and fluorocarbon resin system
Be used in mixed way, after be sprayed on the surface of workpiece, since the coating after spraying is mixture, thus during the reaction, due to end
The carboxyl polyester system reaction time is very fast, and the reaction of fluorine carbon system is slower, crosslinking curing has been formed in the coating, so can not
Can still there be the terminal carboxyl polyester system of part in upper part, this part is subject to ultraviolet in the lower part for floating to coating down again
, there are the situations such as dusting in line irradiation oxidation, further, since fluorocarbon resin system weatherability is extremely excellent, patent CN
103194140A uses pigment, the filler of excellent in weather not in polyester system.So two kinds of system powder are mixed
Solidify coating, so will affect the service life of practical application floating coat, causes coating powder since there are short slabs for some materials
Change, to reduce or lose self-cleaning function.
Thus, it is necessary to it is prominent to provide a kind of weatherability, self-cleaning property, while having that bloom, adhesive force are high, shock resistance is strong
Etc. performances comprehensive powdery paints to adapt to the demand in market.
Summary of the invention
The purpose of the present invention is to provide a kind of bloom self-cleaning powder paints and preparation method thereof.
The technical solution used in the present invention is:
One of the objects of the present invention is to provide a kind of bloom self-cleaning powder paint, the powdery paints presses mass parts
Meter, including following components: 30~50 parts of hydroxyl telechelic polyester resins, 3~15 parts of fluorocarbon resins, 15~75 parts of curing agent, 1~10 part
Modified manometer silicon dioxide, 0~2 part of pigment, 10~40 parts of fillers, 0~15 part of auxiliary agent.
Preferably, said components are as follows: 35~45 parts of hydroxyl telechelic polyester resins, 5~12.5 parts of fluorocarbon resins, 20~70 parts it is solid
Agent, 3~5 parts of modified manometer silicon dioxides, 0.5~1.5 part of pigment, 25~35 parts of fillers, 1~15 part of auxiliary agent.
Preferably, the ratio between mass fraction of above-mentioned hydroxyl telechelic polyester resin and fluorocarbon resin is 8:1~4:1.
Preferably, the hydroxyl value of above-mentioned hydroxyl telechelic polyester resin is 100~300mgKOH/g, 200 DEG C of melt viscosities are 3000
~8500mPa.s.
Preferably, the hydroxyl value of above-mentioned hydroxyl telechelic polyester resin is 100~300mgKOH/g, 200 DEG C of melt viscosities are 3000
~4000mPa.s.
Preferably, above-mentioned hydroxyl telechelic polyester resin is selected from profound new at least one of 4874-0 or 2818.
Preferably, above-mentioned fluorocarbon resin be FEVE tetrafluoro resin based on tetrafluoroethene and vinyl ether co-polymer or
Person's PVDF resin.
Preferably, above-mentioned fluorocarbon resin is selected from Asahi Glass FL710.
Preferably, above-mentioned modified manometer silicon dioxide is the nano silica of aminosilane coupling agent modifying.
Preferably, above-mentioned modified manometer silicon dioxide is prepared by the following procedure method and is prepared:
A) starvation disperses nano silica in solution, obtains dispersion liquid a；
B perfluoro capryl-triethoxysilane is added in) starvation in dispersion liquid a, carries out back flow reaction, adds after cooling
Enter amino silicane coupling agent and carry out coupling reaction, obtains the nano silica of aminosilane coupling agent modifying.
Preferably, the mass ratio of nano silica, perfluoro capryl-triethoxysilane and amino silicane coupling agent is
1:(0.01~0.08): (0.01~0.05).
It is highly preferred that the mass ratio of nano silica, perfluoro capryl-triethoxysilane and amino silicane coupling agent
For 1:(0.03~0.05): (0.02~0.04).
Preferably, step A) in nano silica be dispersed in faintly acid ethanol solution.
Preferably, step B) in back flow reaction temperature be 75~85 DEG C.
Preferably, step B) in back flow reaction time be 0.5~6h, more preferably 2~3h.
Preferably, step B) in coupling reaction temperature be 100~120 DEG C.
Preferably, step B) in coupling reaction time be 0.5~6h, more preferably 1~3h.
Preferably, step B) include the steps that being evaporated under reduced pressure after reaction, dry.
Preferably, above-mentioned curing agent is selected from isocyanates.
Preferably, above-mentioned filler is selected from least one of rutile titanium white powder, barium sulfate, silica flour, mica powder.
Preferably, paint is selected from extra-weather-proof type pigment.
Preferably, above-mentioned auxiliary agent in levelling agent, antioxidant, degasser, ultraviolet absorbing agent, ventilating agent at least one
Kind.
Preferably, above-mentioned levelling agent be selected from butyl cellulose, hydroxymethyl cellulose, GLP588, GLP505, GLP599,
At least one of PV88,486CFL, 570FL.
Preferably, above-mentioned antioxidant is selected from irgasfos 168, antioxidant 3114, antioxidant DLTDP, antioxidant 1010, antioxygen
At least one of agent 1076.
Preferably, above-mentioned degasser is selected from least one of styrax, micro mist wax, polyethers.
Preferably, Tinuvin 144 of the above-mentioned ultraviolet absorbing agent selected from BASF, Tinuvin 783, in UV531
It is at least one.
Preferably, above-mentioned ventilating agent is selected from polyethers, polyvinyl butyral, at least one of BYK966.
Another object of the present invention is to provide the preparation methods of above-mentioned powdery paints, including following preparation step:
1) each component is weighed according to the ratio, and mixing, tabletting obtain mixed material；
2) by mixed material in pulverizer, by nano silica be placed in plus silicon device in, while open pulverizer and
Add silicon device, it is rear to be sieved, obtain powdery paints.
Preferably, the partial size of powdery paints is 30~45 μm.
It is highly preferred that the partial size of powdery paints is 35~40 μm.
Preferably, the mass ratio of nano silica and mixed material is (0.001~0.005): 1.
The beneficial effects of the present invention are:
Hydroxyl telechelic polyester resin, fluorocarbon resin and modified manometer silicon dioxide of the invention forms chemical bond, while by
In the high hydroxyl value of polyester resin, the crosslink density after its solidification made is big, coating structure, in addition the coating after solidification has
Amido bond (- NH-CO -), nitrogen-atoms forms hydrogen bond, the hydrogen atom of amido bond on the hydrogen atom and other amido bonds on amido bond
Also hydrogen bond can be formed with the fluorine atom of fluorocarbon resin, the formation of hydrogen bond enhances the combination energy of different functional groups in coating in coating
Power, so that entire coating forms a finer and close entirety, therefore, powdery paints of the invention has excellent hydrophobicity
Can, while also can be used for outdoor equipment, shield with good weather resistance and the strong characteristic of bloom, adhesive force, impact resistance
The coating on the surfaces such as the coating on the surfaces such as column, billboard and indoor equipment, smoke exhaust ventilator.
Specific embodiment
Enumerate embodiment further below with the present invention will be described in detail.It will similarly be understood that following embodiment is served only for this
Invention is further described, and should not be understood as limiting the scope of the invention, those skilled in the art are according to the present invention
Some nonessential modifications and adaptations that the principle of elaboration is made all belong to the scope of protection of the present invention.Following specific works of example
Skill parameter etc. is also only an example in OK range, i.e. those skilled in the art can do suitable model by the explanation of this paper
Interior selection is enclosed, and does not really want to be defined in hereafter exemplary specific data.
Below with reference to embodiment and comparative example, the present invention is described in detail, the powdery paints of each embodiment and comparative example
Component see the table below 1:
Table 1
The bloom self-cleaning powder paint of Examples 1 to 3 and comparative example 1~2 the preparation method is as follows:
1) each component is weighed by table 1, puts into compounding jar and is pre-mixed 3min, mix 3min again after being spaced 2min, it will be pre-
Mixed component carries out melting mixing uniformly with double screw extruder and squeezes out, and rear tabletting obtains mixed material；
2) mixed material in step 1) is cooled to room temperature and is placed on pulverizer, nano-silica is added in adding silicon device
SiClx, while opening pulverizer and silicon device is added to be crushed, it is rear to cross rotary screen, it obtains the powder that average grain diameter is 35~40 μm and applies
Material.
Performance test:
Powdery paints high-pressure electrostatic method or fluidized bed process prepared by above-described embodiment 1~3 and comparative example 1~2 are applied
Loaded on heat-sensitive substrate material, solidification temperature is 200~210 DEG C, and curing time is that (electric baking oven or heat can be used in 15~20min
Stove of exchanging solidification), coating layer thickness be 50~80 μm, after perform the following performance tests, the results are shown in Table 2:
1) gloss is tested according to GB/T 9754；
2) adhesive force is tested according to GB/T 9286；
3) solvent resistance is tested according to GB/T1768-79；
4) water contact angle is tested according to GB/T 30693-2014；
5) impact resistance is tested according to GB/T 1732；
6) neutral salt spray is tested according to GB/T 1771-2007；
7) xenon lamp exposure test is tested according to GB/T 1865-2009；
8) lipstick and marking pen test: coating lipstick or marking pen on the substrate for being coated with powdery paints of the present invention, quiet
Paper handkerchief erasing test is carried out after setting 72h.
Table 2
As shown in Table 2: when fluorocarbon resin dosage continues growing, high-hydroxyl-value polyester resin and fluorocarbon resin ratio are less than 4:1
When, the crosslink density of entire coating reduces, and entire coating gloss reduces, and influences the gloss of coating, while also will affect water contact
The size at angle influences the self-cleaning effect of coating；And when high-hydroxyl-value polyester resin and fluorocarbon resin ratio are more than 8:1, i.e. fluorine
When the dosage of carbon resin is lower, the weather resistance of coating is bad, after outdoor standing time is too long, influences the automatically cleaning effect of coating
Fruit.
Claims (10)
1. a kind of bloom self-cleaning powder paint, it is characterised in that: in parts by mass, including following components: 30~50 parts of end hydroxyls
Base polyester resin, 3~15 parts of fluorocarbon resins, 15~75 parts of curing agent, 1~10 part of modified manometer silicon dioxide, 0~2 part of pigment,
10~40 parts of fillers, 0~15 part of auxiliary agent.
2. powdery paints according to claim 1, it is characterised in that: the component are as follows: 35~45 parts of hydroxyl telechelic polyester trees
Rouge, 5~12.5 parts of fluorocarbon resins, 20~70 parts of curing agent, 3~5 parts of modified manometer silicon dioxides, 0.5~1.5 part of pigment, 25
~35 parts of fillers, 1~15 part of auxiliary agent.
3. powdery paints according to claim 1, it is characterised in that: the matter of the hydroxyl telechelic polyester resin and fluorocarbon resin
Measuring the ratio between number is 8:1~4:1.
4. powdery paints according to any one of claims 1 to 3, it is characterised in that: the hydroxyl telechelic polyester resin
Hydroxyl value is 100~300mgKOH/g, 200 DEG C of melt viscosities are 3000~8500mPa.s.
5. powdery paints according to any one of claims 1 to 3, it is characterised in that: the fluorocarbon resin is with tetrafluoro
FEVE tetrafluoro resin or PVDF resin based on ethylene and vinyl ether co-polymer.
6. powdery paints according to any one of claims 1 to 3, it is characterised in that: the modified manometer silicon dioxide
For the nano silica of aminosilane coupling agent modifying.
7. powdery paints according to any one of claims 1 to 3, it is characterised in that: the curing agent is selected from isocyanic acid
Ester；The filler is selected from least one of rutile titanium white powder, barium sulfate, silica flour, mica powder；The pigment is selected from super resistance to
Time type pigment；The auxiliary agent is selected from least one of levelling agent, antioxidant, degasser, ultraviolet absorbing agent, ventilating agent.
8. the preparation method of powdery paints described in claim 1~7 any one, characterized by the following steps:
1) each component is weighed in proportion, and mixing, tabletting obtain mixed material；
2) by mixed material in pulverizer, nano silica is placed in and is added in silicon device, while opening pulverizer and plus silicon
Device, it is rear to be sieved, obtain powdery paints.
9. preparation method according to claim 8, it is characterised in that: the partial size of the powdery paints is 30~45 μm.
10. preparation method according to claim 8, it is characterised in that: the matter of the nano silica and mixed material
Amount is than being (0.001~0.005): 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811515509.4A CN109762449B (en) | 2018-12-12 | 2018-12-12 | Highlight self-cleaning powder coating and preparation method thereof |
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| CN201811515509.4A CN109762449B (en) | 2018-12-12 | 2018-12-12 | Highlight self-cleaning powder coating and preparation method thereof |
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| CN110669420A (en) * | 2019-10-10 | 2020-01-10 | 湖南连心科技有限公司 | Anti-doodling polyurethane powder coating and preparation method and application thereof |
| CN112391110A (en) * | 2020-11-16 | 2021-02-23 | 安徽博泰装饰材料有限公司 | Easy-to-clean powder coating and production process thereof |
| CN114836110A (en) * | 2022-04-30 | 2022-08-02 | 江苏国强镀锌实业有限公司 | Nano modified hot-dip galvanized polyester coating and preparation method thereof |
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| CN109762449B (en) | 2021-04-23 |
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