CN110317527A - A kind of powdery paints and preparation method thereof - Google Patents
A kind of powdery paints and preparation method thereof Download PDFInfo
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- CN110317527A CN110317527A CN201910697057.4A CN201910697057A CN110317527A CN 110317527 A CN110317527 A CN 110317527A CN 201910697057 A CN201910697057 A CN 201910697057A CN 110317527 A CN110317527 A CN 110317527A
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention provides a kind of powdery paints and preparation method thereof.The powdery paints includes the component of following parts by weight: 40-60 parts of matrix resin, 3-60 parts of multicomponent curing agent, 10-30 parts of filler, 0.5-2 parts of curing accelerator, 1-20 parts of thermosetting fluoro carbon resin, 0.1-10 parts of thermosetting fluoro carbon resin curing agent and 0.01-0.5 parts of auxiliary agent；Described matrix resin is carboxyl polyester resin, hydroxy polyester resin, epoxy resin, hydroxyl acrylic resin or Epocryl；The multicomponent curing agent includes the cure component that at least two pairs of described matrix resins have different solidification rates or compatibility.The coating surface that powdery paints provided by the invention is formed is smooth, pin-free shrinkage cavity, adhesive force and hydrophobic and lyophobic property with higher, the effect of good anti-graffiti, anti-stick patch.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of powdery paints and preparation method thereof.
Background technique
Powdery paints is a kind of novel not solvent-laden solid powdery coating, by resin, curing agent, filler, pigment, is helped
Agent etc. composition, have the characteristics that it is solvent-free, pollution-free, environmentally friendly, energy saving, thereto addition functional monomer or filler may be implemented
The functionalized application of powdery paints.
The occasions such as building materials, communal facility outdoors, coating surface not only needs certain weatherability, but also needs centainly
Hydrophobic oleophobic, self-cleaning performance.Structure coating surface micronano structure commonly employed in the art or addition low-surface energy substance with
The hydrophobic oleophobic of realization coating, effect easy to clean.But unquestionably addition low-surface energy substance be it is a kind of more simply and easily
Method.Fluorine/anti-graffiti auxiliary agent of silicon class is commonly used in reducing the surface tension of coating, in surface energy during coating dry solidification
Promotion under float on coating surface, realize the hydrophobic oleophobic of coating, antigraffiti effect easy to clean.But powdery paints Quan Gu
Body component, compared to liquid coating, fluorine/anti-graffiti auxiliary agent of silicon class in powdery paints is more difficult to float on coating surface, up to not
To due effect.Moreover, because fluorine/anti-graffiti auxiliary agent of silicon class is differed with the common macromolecule resin surface tension of powdery paints
It is too big, it is easy to produce shrinkage cavity phenomenon.
It is the wash resistant of matrix, doodling prevention powder coating, CN that CN 101712834A, which discloses acrylic acid polyester resin,
101220243A disclose it is a kind of using hydroxy resin as the doodling prevention powder coating of matrix, CN104231906A disclose it is a kind of with
Mix the doodling prevention powder coating that hydroxy resin is matrix.But the above file only shows the washable of coating by matrix resin
Wash anti-graffiti, antigraffiti effect and weatherability are lower.
Therefore, up for researching and developing a kind of powdery paints with good, anti-sticking effect, to meet indoor and outdoor build
The coating demand of the occasions such as material, communal facility.
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 preparation method thereof.
Compared to the powdery paints for directly adding anti-graffiti auxiliary agent, the coating surface that powdery paints provided by the present invention is formed is smooth,
Pin-free shrinkage cavity has the effect of better hydrophobic and oil repellent, anti-graffiti, anti-stick patch.
To achieve this purpose, the present invention adopts the following technical scheme:
In a first aspect, the present invention provides a kind of powdery paints, the component including following parts by weight:
40-60 parts of matrix resin, 3-60 parts of multicomponent curing agent, 10-30 parts of filler, 0.5-2 parts of curing accelerator, thermosetting
1-20 parts of fluorocarbon resin of property, 0.1-10 parts of thermosetting fluoro carbon resin curing agent and auxiliary agent 0.01-0.5 parts anti-graffiti；
Described matrix resin is carboxyl polyester resin, hydroxy polyester resin, epoxy resin, hydroxyl acrylic resin or ring
Oxypropylene acid ester resin；
The multicomponent curing agent has different solidification rates or compatibility to consolidate described matrix resin comprising at least two
Chemical conversion point.
The present invention solidifies matrix resin using multicomponent curing agent, and multicomponent curing agent has described matrix resin
Different solidification rates or compatibility can make matrix resin form non-homogeneous structure during the reaction.In heterogeneous matrix knot
Thermosetting fluoro carbon resin is easier to float to coating surface in structure, forms bi-layer coating structure, matrix resin provide adhesive force and
Basic mechanical property, fluorocarbon resin provide good chemical resistance, weatherability；And the surface tension of fluorocarbon resin with
Anti-graffiti auxiliary agent is close, can drive anti-graffiti auxiliary agent, it is made to be easier to float to coating surface, improves the hydrophobic and oil repellent of coating
Property, so that coating is obtained anti-graffiti, anti-sticking effect.
In the present invention, the parts by weight of described matrix resin are 40-60 parts, such as can be 40 parts, 42 parts, 43 parts, 45
Part, 46 parts, 48 parts, 50 parts, 52 parts, 53 parts, 55 parts, 56 parts, 58 parts or 60 parts etc..
The parts by weight of the multicomponent curing agent be 3-60 parts, such as can be 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts,
5.5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 12 parts, 13 parts, 15 parts, 18 parts, 20 parts, 22 parts, 25 parts, 28 parts, 30 parts, 32 parts,
35 parts, 38 parts, 40 parts, 42 parts, 43 parts, 45 parts, 46 parts, 48 parts, 50 parts, 52 parts, 53 parts, 55 parts, 56 parts, 58 parts or 60 parts
Deng.
The parts by weight of the filler be 10-30 parts, such as can be 10 parts, 12 parts, 13 parts, 15 parts, 16 parts, 18 parts,
20 parts, 22 parts, 23 parts, 25 parts, 26 parts, 28 parts or 30 parts etc..
The parts by weight of the curing accelerator be 0.5-2 parts, such as can be 0.5 part, 0.6 part, 0.7 part, 0.8 part,
0.9 part, 1 part, 1.2 parts, 1.3 parts, 1.5 parts, 1.6 parts, 1.8 parts or 2 parts etc..
The parts by weight of the thermosetting fluoro carbon resin are 1-20 parts, such as can be 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6
Part, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts or 20 parts etc..
The parts by weight of the thermosetting fluoro carbon resin curing agent be 0.1-10 parts, such as can be 0.1 part, 0.3 part,
0.5 part, 0.8 part, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts
Deng.
The parts by weight of the anti-graffiti auxiliary agent be 0.01-0.5 parts, such as can be 0.01 part, 0.02 part, 0.03 part,
0.04 part, 0.05 part, 0.06 part, 0.08 part, 0.1 part, 0.12 part, 0.15 part, 0.18 part, 0.2 part, 0.22 part, 0.25 part,
0.28 part, 0.3 part, 0.32 part, 0.35 part, 0.38 part, 0.4 part, 0.42 part, 0.45 part, 0.48 part or 0.5 part etc..
In the present invention, for thermosetting fluoro carbon resin curing agent for solidifying thermosetting fluoro carbon resin, dosage can be according to thermosetting
The dosage of property fluorocarbon resin is adjusted.Preferably, the parts by weight of the thermosetting fluoro carbon resin are 10-20 parts, the heat
The parts by weight of solidity fluorocarbon resin curing agent are 3-5 parts.
In an embodiment of the present invention, described matrix resin is carboxyl polyester resin, and the multicomponent curing agent is three
The compound of poly- triglycidyl isocyanurate (TGIC) and hydroxyalkyl amide, the parts by weight of the multicomponent curing agent are
3-6 parts (such as 3 parts, 3.2 parts, 3.5 parts, 3.8 parts, 4 parts, 4.2 parts, 4.5 parts, 4.8 parts, 5 parts, 5.2 parts, 5.5 parts, 5.8 parts or
6 parts etc.).
Preferably, the multicomponent curing agent by trimerization triglycidyl isocyanurate and hydroxyalkyl amide in mass ratio
1:1.5-1.5:1 (such as 1:1.5,1:1.4,1:1.3,1:1.2,1:1.1,1:1,1.1:1,1.2:1,1.3:1,1.4:1 or
1.5:1 wait) composition.
In an embodiment of the present invention, described matrix resin is carboxyl polyester resin, and the multicomponent curing agent is ring
The compound of oxygen resin and Epocryl, the parts by weight of the multicomponent curing agent are 35-60 parts (such as 35
Part, 38 parts, 40 parts, 42 parts, 45 parts, 48 parts, 50 parts, 52 parts, 55 parts, 58 parts or 60 parts etc.).
Preferably, the multicomponent curing agent is by epoxy resin and Epocryl 1:1.5-1.5 in mass ratio:
1 (such as 1:1.5,1:1.4,1:1.3,1:1.2,1:1.1,1:1,1.1:1,1.2:1,1.3:1,1.4:1 or 1.5:1 etc.) group
At.
In an embodiment of the present invention, described matrix resin is hydroxy polyester resin or hydroxyl acrylic resin, institute
State the compound that multicomponent curing agent is blocked polyisocyanate and amino resins, the parts by weight of the multicomponent curing agent
For 8-15 parts (such as 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts etc.).
Preferably, the multicomponent curing agent by blocked polyisocyanate and amino resins 1-2:1 in mass ratio (such as
1:1,1.1:1,1.2:1,1.3:1,1.4:1,1.5:1,1.6:1,1.7:1,1.8:1,1.9:1 or 2:1 etc.).
As the preferred technical solution of the present invention, described matrix resin is epoxy resin, and the multicomponent curing agent is carboxylic
The compound of base polyester resin and carboxy acrylic ester resin, the parts by weight of the multicomponent curing agent be 40-60 parts (such as
40 parts, 42 parts, 45 parts, 48 parts, 50 parts, 52 parts, 55 parts, 58 parts or 60 parts etc.).
Preferably, the multicomponent curing agent is by carboxyl polyester resin and carboxy acrylic ester resin 1:1.5- in mass ratio
1.5:1 composition (such as 1:1.5,1:1.4,1:1.3,1:1.2,1:1.1,1:1,1.1:1,1.2:1,1.3:1,1.4:1 or 1.5:
1 etc.).
In an embodiment of the present invention, described matrix resin is Epocryl, the multicomponent curing agent
For the compound of dodecanedioic acid and linear phenolic resin, the parts by weight of the multicomponent curing agent are 6-12 parts (such as 6
Part, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts or 12 parts etc.).
Preferably, the multicomponent curing agent by dodecanedioic acid and linear phenolic resin 1:2-3 in mass ratio (such as 1:
2,1:2.1,1:2.2,1:2.3,1:2.4,1:2.5,1:2.6,1:2.7,1:2.8,1:2.9 or 1:3 etc.) composition.
In the present invention, according to the difference of matrix resin type, the ingredient and dosage of multicomponent curing agent are also different.Wherein,
When matrix resin is epoxy resin, since its weatherability is poor, is not suitable for open air, can be used for indoor coating；Work as base
When body resin is other resins in addition to epoxy resin, obtained powdery paints has good weatherability, can be used for open air
The coating of facility.
As the preferred technical solution of the present invention, the filler is in titanium dioxide, barium sulfate, silicon powder or mica powder
It is a kind of or at least two combination.
The viscosity of the controllable powdery paints of filler, reduces the shrinking percentage of powdery paints.Wherein, titanium dioxide is also a kind of white
Pigment then no longer needs to addition white pigment when filler is titanium dioxide in powdery paints.
Preferably, the partial size of the filler is 0.5-10 μm；Such as it can be 0.5 μm, 0.6 μm, 0.7 μm, 0.8 μm, 0.9
μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm etc..
Preferably, the curing accelerator is selected from one of imidazoles, imdazole derivatives, tertiary amine or quaternary ammonium salt or at least two
The combination of kind.
As the preferred technical solution of the present invention, the thermosetting fluoro carbon resin is FEVE (trifluoro-ethylene-vinyl ethers-
Vinyl ester copolymer).
Preferably, the hydroxyl value of the FEVE is 50-60mg KOH/g；Such as it can be 50KOH/g, 51KOH/g, 52KOH/
G, 53KOH/g, 54KOH/g, 55KOH/g, 56KOH/g, 57KOH/g, 58KOH/g, 59KOH/g or 60KOH/g etc..
Preferably, the thermosetting fluoro carbon resin curing agent is blocked polyisocyanate.
Preferably, the anti-graffiti auxiliary agent is perfluoropolyether-modified acrylic resin.
Preferably, the hydroxyl value of the anti-graffiti auxiliary agent is 30-50mg KOH/g；Such as can be 30KOH/g, 31KOH/g,
32KOH/g、33KOH/g、34KOH/g、35KOH/g、36KOH/g、37KOH/g、38KOH/g、39KOH/g、40KOH/g、
42KOH/g, 43KOH/g, 45KOH/g, 46KOH/g, 48KOH/g or 50KOH/g etc..
As the preferred technical solution of the present invention, the powdery paints further include 0.2-1 parts (such as can be 0.2 part,
0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part or 1 part etc.) levelling agent.
Preferably, the levelling agent is polyacrylate levelling agent.
Preferably, to further include 0.1-0.5 parts (such as can be 0.1 part, 0.15 part, 0.2 part, 0.25 to the powdery paints
Part, 0.3 part, 0.35 part, 0.4 part, 0.45 part or 0.5 part etc.) degasser.
Preferably, the degasser is styrax.
Preferably, to further include 0.1-0.5 parts (such as can be 0.1 part, 0.15 part, 0.2 part, 0.25 to the powdery paints
Part, 0.3 part, 0.35 part, 0.4 part, 0.45 part or 0.5 part etc.) nano-gas-phase aluminium oxide.Nano-gas-phase aluminium oxide is to promote powder
The auxiliary agent of flowing is common auxiliary agent in a kind of powdery paints.
Preferably, to further include 0.5-2 parts (such as can be 0.5 part, 0.8 part, 1 part, 1.2 parts, 1.5 to the powdery paints
Part, 1.8 parts or 2 parts etc.) pigment.
Powdery paints universal pigment has iron oxide red, ultramarine, titanium dioxide, iron oxide yellow, phthalocyanine blue, dark green etc..The present invention couple
Pigment type is not particularly limited, and those skilled in the art can select as needed.
Second aspect, the present invention provide a kind of preparation method of above-mentioned powdery paints, the preparation method is that: by each component
Then mixing, melting extrusion tabletting and crush, obtain the powdery paints.
As the preferred technical solution of the present invention, the temperature of the melting extrusion is 80-110 DEG C；Such as can be 80 DEG C,
82 DEG C, 85 DEG C, 88 DEG C, 90 DEG C, 92 DEG C, 95 DEG C, 98 DEG C, 100 DEG C, 102 DEG C, 105 DEG C, 108 DEG C or 110 DEG C etc..
Preferably, it is described crushing be crushed to partial size be 20-80 μm；Such as it can be 20 μm, 25 μm, 30 μm, 35 μm, 40
μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm or 80 μm etc..
Preferably, the preparation method includes the following steps:
(1) thermosetting fluoro carbon resin, anti-graffiti auxiliary agent and thermosetting fluoro carbon resin curing agent are mixed, twin-screw is added and squeezes
Out in machine, the melting extrusion at 80-110 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, sieve and cross 180 mesh
Net obtains the first mixed material；
(2) remaining each component is mixed, is added twin-screw extrude, the melting extrusion at 80-110 DEG C, then tabletting,
It cools down, be crushed to partial size as 20-80 μm, screening and 180 mesh nets excessively, obtain the second mixed material；
(3) first mixed material and second mixed material are mixed, obtains the powdery paints.
Thermosetting fluoro carbon resin, anti-graffiti auxiliary agent and solid-state fluorocarbon resin curing agent are individually blended and are crushed, be for
It is sufficiently mixed thermosetting fluoro carbon resin and anti-graffiti auxiliary agent uniformly, facilitates anti-graffiti auxiliary agent on thermosetting fluoro carbon resin
It is floating.
Powdery paints provided by the invention can carry out coating and solidification by the method for this field routine, illustratively,
Coating can be carried out using high-pressure electrostatic method or fluidized bed process, be then heating and curing at 140-200 DEG C 5-30min, preferably exists
Be heating and curing 10-20min at 160-180 DEG C, forms coating.
Compared with prior art, the invention has the following advantages:
The present invention solidifies matrix resin by using multicomponent curing agent, makes matrix resin shape during the reaction
At non-homogeneous structure, thermosetting fluoro carbon resin can be made to be easier to float to coating surface, improve the weatherability of coating；And fluorine
The surface tension of carbon resin is close with anti-graffiti auxiliary agent, and anti-graffiti auxiliary agent can be driven to float to coating surface, improves anti-graffiti
The utilization rate of auxiliary agent, compared to the powdery paints for directly adding anti-graffiti auxiliary agent, the painting of powdery paints formation provided by the invention
Layer surface is smooth, pin-free shrinkage cavity, adhesive force with higher, and the effect of better hydrophobic and oil repellent, anti-graffiti, anti-stick patch.
Specific embodiment
Below by specific embodiment to further illustrate the technical scheme of the present invention.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.
Raw materials used source is as follows in the embodiment of the present invention:
Carboxyl polyester resin: profound new CRYCOAT1501, acid value 70mgKOH/g；
Hydroxy polyester resin: Guangzhou produces association EL-1200, hydroxyl value 45mg KOH/g；
Epoxy resin: Ba Ling petrochemical industry CYD-014, epoxide number 0.12；
Epocryl: Guangzhou produces association AG-500, epoxide equivalent 500g/eq；
Carboxy acrylic ester resin: EStron G154, acid value 160mg KOH/g；
Hydroxyl acrylic resin: Mitsui Chemicals, hydroxyl value 45mgKOH/g；
Amino resins: solid-state hexamethoxymethyl melamine, chemicals；
Linear phenolic resin: Shandong chemical industry Amanda 969 is celebrated in grand celebration；
Beta-hydroxy alkylamide: Primid XL 552；
Blocked polyisocyanate: Degussa B1530；
FEVE: the Lumiflon LF710 of Asahi Glass Co., Ltd, hydroxyl value 50mg KOH/g；
Perfluoropolyether-modified acrylic resin: Beijing Hua Tongrui speeds the A39, hydroxyl value 40mg of material Science and Technology Ltd.
KOH/g；
Levelling agent: the GLP588 of Ningbo South-sea Chemical Co., Ltd..
Embodiment 1-6
Embodiment 1-6 provides a kind of powdery paints respectively, it is specific the preparation method is as follows:
(1) thermosetting fluoro carbon resin FEVE, perfluoropolyether-modified acrylic resin and blocked polyisocyanate are mixed,
Add twin-screw extrude, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, screening simultaneously
180 mesh nets are crossed, the first mixed material is obtained；
(2) by carboxyl polyester resin, TGIC, beta-hydroxy alkylamide, titanium dioxide (average grain diameter 800nm), curing accelerator
Diphenyl-imidazole quinoline, levelling agent, styrax, nano-gas-phase aluminium oxide and pigment mixing, add twin-screw extrude, 100
Melting extrusion at DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, sieve and cross 180 mesh nets, obtain the second mixture
Material；
(3) the first mixed material and the second mixed material are mixed, obtains powdery paints.
Comparative example 1
Difference with embodiment 4 is, does not add thermosetting fluoro carbon resin and blocked polyisocyanate, directly by each group
Point mixing, melting extrusion, then tabletting, cooling, crushing, screening and cross 180 mesh nets.
Comparative example 2
Difference with embodiment 4 is, does not add perfluoropolyether-modified acrylic resin, other components and dosage and implementation
Example 4 is identical.
Comparative example 3
Difference with embodiment 4 is, TGIC is replaced with to the beta-hydroxy alkylamide of equivalent, other components and dosage and reality
It is identical to apply example 4.
Comparative example 4
Difference with embodiment 4 is, beta-hydroxy alkylamide is replaced with to the TGIC of equivalent, other components and dosage and reality
It is identical to apply example 4.
Wherein, in embodiment 1-6 and comparative example 1-4 the type and dosage (parts by weight) of each component respectively such as the following table 1 and
Shown in table 2:
Table 1
Table 2
The powder coating and their application that embodiment 1-6 and comparative example 1-4 are provided with high-pressure electrostatic method in wood substrates,
Be heating and curing 20min at 180 DEG C, forms coating.Anti-graffiti property, adhesive force and the weatherability of coating are tested, test side
Method is as follows:
Anti-graffiti property: being tested according to the regulation of JGT 304-2011 standard, tests paint film respectively for prepared Chinese ink, oiliness
Marking pen and the performance of acrylic acid spray painting；1 grade indicates to be removed with doing lint-free cotton, and 2 grades indicate weak clearly with 1% neutral aqueous
Lotion can be removed, and 3 grades of expression citrus based cleaning agents can be removed, and 4 grades of expression dehydrated alcohols can be removed, and " can not remove " indicates
The discoloration of coating loss of gloss or damage after above-mentioned four kinds of cleaning materials cannot be removed or be cleaned；
Wherein, prepared Chinese ink meets QB/T 2860-2007；Permanent pen, it is red, meet QB/T 2777-2006；Acrylic acid
Spray painting, black meet BB/T 0047-2007；
Anti-stick patch: provide that measurement 3M single side marking tape is to 180 ° of coating according to the standard of GB/T 2792-2004
Peel strength；
Contact angle: using the contact angle of contact angle measurement (KRUSS DSA100) test surface of the paint film, water is tested respectively
Contact angle and oil droplet (olive oil) contact angle are dripped, contact angle is bigger, and the anti-stain characteristic for representing paint film is better；
Adhesive force: according to stroke hundred lattice adhesive force of the standard testing paint film of GB/T 9286-1998, using cutter cutter
It cuts to form grid pattern in coating surface, coating cut edge is smoothly 0 grade completely；Notch infall has a little coating de-
It falls, impacted cross-cut area is 1 grade less than 5%；There is coating shedding in notch infall or along notching edge, it is impacted
Cross-cut area be greater than 5% less than 15% be 2 grades；
Resistance to artificial climate (UVB) aging: according to ISO 4892-2013, the weatherability (ultraviolet light and aging of testing coating
Light-protection rate, color difference after 200h).
The result of above-mentioned test is respectively as shown in the following table 3 and table 4:
Table 3
Table 4
The coating of powdery paints provided by the present invention preparation has good it can be seen from the performance data of table 3 and table 4
Anti-graffiti, anti-stick patch, hydrophobic and oil repellent effect and higher adhesive force and weatherability.
Wherein, compared to embodiment 4, since the additive amount of TGIC and beta-hydroxy alkylamide has big difference in embodiment 5-6,
So that the structure of matrix resin during the reaction is more uniform, it is unfavorable for thermosetting fluoro carbon resin and drives on anti-graffiti auxiliary agent
It is floating, therefore the coating antigraffiti effect that is formed of the obtained powdery paints of embodiment 5-6 and weatherability are declined.
Comparative example 1 is not added with thermosetting fluoro carbon resin, is unfavorable for anti-graffiti auxiliary agent and floats, therefore the antigraffiti effect of coating
It is poor with weatherability.Comparative example 2 is not added with anti-graffiti auxiliary agent, and coating is almost without antigraffiti effect.In comparative example 3 and 4 only
Using the curing agent of one-component, matrix resin can not form non-homogeneous structure in the curing process, be unfavorable for thermosetting fluoro carbon
Resin drives anti-graffiti auxiliary agent to float, therefore the antigraffiti effect of coating and weatherability are poor.
Embodiment 7-9
Embodiment 7-9 provides a kind of powdery paints respectively, it is specific the preparation method is as follows:
(1) thermosetting fluoro carbon resin FEVE, perfluoropolyether-modified acrylic resin and blocked polyisocyanate are mixed,
Add twin-screw extrude, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, screening simultaneously
180 mesh nets are crossed, the first mixed material is obtained；
(2) by carboxyl polyester resin, epoxy resin, Epocryl, titanium dioxide (average grain diameter 800nm), solid
Change promotor diphenyl-imidazole quinoline, levelling agent, styrax, nano-gas-phase aluminium oxide and pigment mixing, double screw extruder is added
In, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size and be 20-80 μm, sieve and cross 180 mesh nets, obtain the
Two mixed materials；
(3) the first mixed material and the second mixed material are mixed, obtains powdery paints.
Comparative example 5
Difference with embodiment 7 is, does not add thermosetting fluoro carbon resin and blocked polyisocyanate, directly by each group
Point mixing, melting extrusion, then tabletting, cooling, crushing, screening and cross 180 mesh nets.
Comparative example 6
Difference with embodiment 7 is, epoxy resin replaces with to the Epocryl of equivalent, other components and
Dosage is same as Example 7.
Comparative example 7
Difference with embodiment 7 is, Epocryl replaces with to the epoxy resin of equivalent, other components and
Dosage is same as Example 7.
Wherein, the type and dosage (parts by weight) of each component are as shown in table 5 below in embodiment 7-9 and comparative example 5-7:
Table 5
The powder coating and their application that embodiment 7-9 and comparative example 5-7 are provided with high-pressure electrostatic method in wood substrates,
Be heating and curing 15min at 160 DEG C, forms coating.The property of coating, adhesive force are tested, as a result as shown in table 6 below:
Table 6
The coating of powdery paints provided by the present invention preparation has good anti-it can be seen from the performance data of table 6
Scribble, anti-stick patch, hydrophobic and oil repellent effect and higher adhesive force.Comparative example 5 is not added with thermosetting fluoro carbon resin, is unfavorable for
Anti-graffiti auxiliary agent floats；Comparative example 6-7 only uses the curing agent of one-component, and matrix resin can not form non-in the curing process
Equal phase structure is unfavorable for thermosetting fluoro carbon resin and anti-graffiti auxiliary agent is driven to float, therefore the antigraffiti effect of coating is poor.
Embodiment 10-12
Embodiment 10-12 provides a kind of powdery paints respectively, it is specific the preparation method is as follows:
(1) thermosetting fluoro carbon resin FEVE, perfluoropolyether-modified acrylic resin and blocked polyisocyanate A are mixed
Close, add twin-screw extrude, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, sieve
Divide and cross 180 mesh nets, obtains the first mixed material；
(2) by hydroxy polyester resin, blocked polyisocyanate B, amino resins, barium sulfate (5 μm of average grain diameter), solidification
Promotor diphenyl-imidazole quinoline, levelling agent, styrax, nano-gas-phase aluminium oxide and pigment mixing, add twin-screw extrude,
The melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, sieve and cross 180 mesh nets, obtain second
Mixed material；
(3) the first mixed material and the second mixed material are mixed, obtains powdery paints.
It should be noted that the blocked polyisocyanate A and blocked polyisocyanate B in embodiment 10-12 are practical
It is same blocked polyisocyanate, the ingredient merely for convenience for illustrating powdery paints and preparation method, and artificially assign
The name given.
Comparative example 8
Difference with embodiment 10 is, does not add thermosetting fluoro carbon resin and blocked polyisocyanate, directly will be each
Component mixes, melting extrusion, then tabletting, cooling, crushing, screening and 180 mesh nets excessively.
Comparative example 9
Difference with embodiment 10 is, blocked polyisocyanate B is replaced with to the amino resins of equivalent, other components
It is same as in Example 10 with dosage.
Comparative example 10
Difference with embodiment 10 is, amino resins is replaced with to the blocked polyisocyanate B of equivalent, other components
It is same as in Example 10 with dosage.
Wherein, in embodiment 10-12 and comparative example 8-10 each component type and dosage (parts by weight) such as the following table 7 institute
Show:
Table 7
The powder coating and their application that embodiment 10-12 and comparative example 8-10 are provided with high-pressure electrostatic method in wood substrates,
Be heating and curing 10min at 160 DEG C, forms coating.Anti-graffiti property, adhesive force and the weatherability of coating are tested, as a result
It is as shown in table 8 below:
Table 8
The coating of powdery paints provided by the present invention preparation has good anti-it can be seen from the performance data of table 8
Scribble, anti-stick patch, hydrophobic and oil repellent effect and higher adhesive force and weatherability.Comparative example 8 is not added with thermosetting fluoro carbon tree
Rouge is unfavorable for anti-graffiti auxiliary agent and floats；Comparative example 9-10 only uses the curing agent of one-component, and matrix resin is in the curing process
Non-homogeneous structure can not be formed, is unfavorable for thermosetting fluoro carbon resin and anti-graffiti auxiliary agent is driven to float, therefore the anti-graffiti effect of coating
Fruit and weatherability are poor.
Embodiment 13-15
Embodiment 13-15 provides a kind of powdery paints respectively, it is specific the preparation method is as follows:
(1) thermosetting fluoro carbon resin FEVE, perfluoropolyether-modified acrylic resin and blocked polyisocyanate A are mixed
Close, add twin-screw extrude, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, sieve
Divide and cross 180 mesh nets, obtains the first mixed material；
(2) by hydroxyl acrylic resin, blocked polyisocyanate B, amino resins, barium sulfate (5 μm of average grain diameter),
Curing accelerator diphenyl-imidazole quinoline, levelling agent, styrax, nano-gas-phase aluminium oxide and pigment mixing, are added twin-screw extrusion
In machine, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, sieve and cross 180 mesh nets, obtain
Second mixed material；
(3) the first mixed material and the second mixed material are mixed, obtains powdery paints.
It should be noted that the blocked polyisocyanate A and blocked polyisocyanate B in embodiment 10-12 are practical
It is same blocked polyisocyanate, the ingredient merely for convenience for illustrating powdery paints and preparation method, and artificially assign
The name given.
Comparative example 11
Difference with embodiment 13 is, does not add thermosetting fluoro carbon resin and blocked polyisocyanate, directly will be each
Component mixes, melting extrusion, then tabletting, cooling, crushing, screening and 180 mesh nets excessively.
Comparative example 12
Difference with embodiment 13 is, blocked polyisocyanate B is replaced with to the amino resins of equivalent, other components
It is identical as embodiment 13 with dosage.
Comparative example 13
Difference with embodiment 13 is, amino resins is replaced with to the blocked polyisocyanate B of equivalent, other components
It is identical as embodiment 13 with dosage.
Wherein, in embodiment 13-15 and comparative example 11-13 each component type and dosage (parts by weight) such as the following table 9 institute
Show:
Table 9
The powder coating and their application that embodiment 13-15 and comparative example 11-13 are provided with high-pressure electrostatic method in wood substrates,
Be heating and curing 10min at 160 DEG C, forms coating.Anti-graffiti property, adhesive force and the weatherability of coating are tested, as a result
It is as shown in the following table 10:
Table 10
The coating of powdery paints provided by the present invention preparation has good anti-it can be seen from the performance data of table 10
Scribble, anti-stick patch, hydrophobic and oil repellent effect and higher adhesive force and weatherability.Comparative example 11 is not added with thermosetting fluoro carbon tree
Rouge is unfavorable for anti-graffiti auxiliary agent and floats；Comparative example 12-13 only uses the curing agent of one-component, and matrix resin is in solidification process
In can not form non-homogeneous structure, be unfavorable for thermosetting fluoro carbon resin and anti-graffiti auxiliary agent driven to float, therefore coating is anti-graffiti
Effect and weatherability are poor.
Embodiment 16-18
Embodiment 16-18 provides a kind of powdery paints respectively, it is specific the preparation method is as follows:
(1) thermosetting fluoro carbon resin FEVE, perfluoropolyether-modified acrylic resin and blocked polyisocyanate are mixed,
Add twin-screw extrude, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, screening simultaneously
180 mesh nets are crossed, the first mixed material is obtained；
(2) by epoxy resin, carboxyl polyester resin, carboxy acrylic ester resin, barium sulfate (5 μm of average grain diameter), solidification
Promotor diphenyl-imidazole quinoline, levelling agent, styrax, nano-gas-phase aluminium oxide and pigment mixing, add twin-screw extrude,
The melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, sieve and cross 180 mesh nets, obtain second
Mixed material；
(3) the first mixed material and the second mixed material are mixed, obtains powdery paints.
Comparative example 14
Difference with embodiment 16 is, does not add thermosetting fluoro carbon resin and blocked polyisocyanate, directly will be each
Component mixes, melting extrusion, then tabletting, cooling, crushing, screening and 180 mesh nets excessively.
Comparative example 15
Difference with embodiment 16 is, carboxyl polyester resin is replaced with to the carboxy acrylic ester resin of equivalent, other
Component and dosage are identical as embodiment 16.
Comparative example 16
Difference with embodiment 16 is, is the carboxyl polyester resin of equivalent by carboxy acrylic ester resin replacement, other
Component and dosage are identical as embodiment 16.
Wherein, in embodiment 16-18 and comparative example 14-16 each component type and dosage (parts by weight) such as the following table 11 institute
Show:
Table 11
The powder coating and their application that embodiment 16-18 and comparative example 14-16 are provided with high-pressure electrostatic method in wood substrates,
Be heating and curing 20min at 180 DEG C, forms coating.The anti-graffiti property of coating, adhesive force are tested, as a result such as the following table 12
It is shown:
Table 12
The coating of powdery paints provided by the present invention preparation has good anti-it can be seen from the performance data of table 12
Scribble, anti-stick patch, hydrophobic and oil repellent effect and higher adhesive force.Comparative example 14 is not added with thermosetting fluoro carbon resin, is unfavorable for
Anti-graffiti auxiliary agent floats；Comparative example 15-16 only uses the curing agent of one-component, and matrix resin can not be formed in the curing process
Non-homogeneous structure is unfavorable for thermosetting fluoro carbon resin and anti-graffiti auxiliary agent is driven to float, therefore the antigraffiti effect of coating is poor.
Embodiment 19-21
Embodiment 19-21 provides a kind of powdery paints respectively, it is specific the preparation method is as follows:
(1) thermosetting fluoro carbon resin FEVE, perfluoropolyether-modified acrylic resin and blocked polyisocyanate are mixed,
Add twin-screw extrude, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, screening simultaneously
180 mesh nets are crossed, the first mixed material is obtained；
(2) by Epocryl, dodecanedioic acid, linear phenolic resin, barium sulfate (5 μm of average grain diameter), solid
Change promotor diphenyl-imidazole quinoline, levelling agent, styrax, nano-gas-phase aluminium oxide and pigment mixing, double screw extruder is added
In, the melting extrusion at 100 DEG C, then tabletting, cooling, be crushed to partial size and be 20-80 μm, sieve and cross 180 mesh nets, obtain the
Two mixed materials；
(3) the first mixed material and the second mixed material are mixed, obtains powdery paints.
Comparative example 17
Difference with embodiment 19 is, does not add thermosetting fluoro carbon resin and blocked polyisocyanate, directly will be each
Component mixes, melting extrusion, then tabletting, cooling, crushing, screening and 180 mesh nets excessively.
Comparative example 18
Difference with embodiment 19 is, according to the ratio of dodecanedioic acid and linear phenolic resin in embodiment 19, incites somebody to action
It is identical as embodiment 19 that dodecanedioic acid replaces with linear phenolic resin, other components and dosage.
Comparative example 19
Difference with embodiment 19 is, according to the ratio of dodecanedioic acid and linear phenolic resin in embodiment 19, incites somebody to action
It is identical as embodiment 19 that linear phenolic resin replaces with dodecanedioic acid, other components and dosage.
Wherein, in embodiment 19-21 and comparative example 17-19 each component type and dosage (parts by weight) such as the following table 13 institute
Show:
Table 13
The powder coating and their application that embodiment 19-21 and comparative example 17-19 are provided with high-pressure electrostatic method in wood substrates,
Be heating and curing 20min at 180 DEG C, forms coating.Anti-graffiti property, adhesive force and the weatherability of coating are tested, as a result
It is as shown in table 14 below:
Table 14
The coating of powdery paints provided by the present invention preparation has good anti-it can be seen from the performance data of table 14
Scribble, anti-stick patch, hydrophobic and oil repellent effect and higher adhesive force and weatherability.Comparative example 17 is not added with thermosetting fluoro carbon tree
Rouge is unfavorable for anti-graffiti auxiliary agent and floats；Comparative example 18-19 only uses the curing agent of one-component, and matrix resin is in solidification process
In can not form non-homogeneous structure, be unfavorable for thermosetting fluoro carbon resin and anti-graffiti auxiliary agent driven to float, therefore coating is anti-graffiti
Effect and weatherability are poor.
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 the component of following parts by weight:
40-60 parts of matrix resin, 3-60 parts of multicomponent curing agent, 10-30 parts of filler, 0.5-2 parts of curing accelerator, thermosetting fluoro
1-20 parts of carbon resin, 0.1-10 parts of thermosetting fluoro carbon resin curing agent and auxiliary agent 0.01-0.5 parts anti-graffiti；
Described matrix resin is carboxyl polyester resin, hydroxy polyester resin, epoxy resin, hydroxyl acrylic resin or epoxy third
Alkene acid ester resin；
The multicomponent curing agent has different solidification rates or compatibility to be solidified into described matrix resin comprising at least two
Point.
2. powdery paints according to claim 1, which is characterized in that described matrix resin is carboxyl polyester resin, described
Multicomponent curing agent is the compound of epoxy resin and Epocryl, and the parts by weight of the multicomponent curing agent are
35-60 parts；
Preferably, the multicomponent curing agent is by epoxy resin and Epocryl 1:1.5-1.5:1 group in mass ratio
At.
3. powdery paints according to claim 1, which is characterized in that described matrix resin is carboxyl polyester resin, described
Multicomponent curing agent is the compound of triglycidyl isocyanurate and hydroxyalkyl amide, the weight of the multicomponent curing agent
Number is 3-6 parts；
Preferably, the multicomponent curing agent is by triglycidyl isocyanurate and hydroxyalkyl amide 1:1.5- in mass ratio
1.5:1 composition.
4. powdery paints according to claim 1, which is characterized in that described matrix resin is hydroxy polyester resin or hydroxyl
Acrylate, the multicomponent curing agent are the compound of blocked polyisocyanate and amino resins, the multicomponent
The parts by weight of curing agent are 8-15 parts；
Preferably, the multicomponent curing agent is by blocked polyisocyanate and amino resins 1-2:1 in mass ratio.
5. powdery paints according to claim 1, which is characterized in that described matrix resin is epoxy resin, the multiple groups
Dividing curing agent is the compound of carboxyl polyester resin and carboxy acrylic ester resin, and the parts by weight of the multicomponent curing agent are
40-60 parts；
Preferably, the multicomponent curing agent is by carboxyl polyester resin and carboxy acrylic ester resin 1:1.5-1.5 in mass ratio:
1 composition.
6. powdery paints according to claim 1, which is characterized in that described matrix resin is Epocryl,
The multicomponent curing agent is the compound of dodecanedioic acid and linear phenolic resin, the parts by weight of the multicomponent curing agent
It is 6-12 parts；
Preferably, the multicomponent curing agent is made of dodecanedioic acid and linear phenolic resin 1:2-3 in mass ratio.
7. powdery paints according to claim 1-6, which is characterized in that the filler is selected from titanium dioxide, sulfuric acid
One of barium, silicon powder or mica powder or at least two combination；
Preferably, the partial size of the filler is 0.5-10 μm；
Preferably, the curing accelerator is selected from one of imidazoles, imdazole derivatives, tertiary amine or quaternary ammonium salt or at least two
Combination；
Preferably, the parts by weight of the thermosetting fluoro carbon resin are 10-20 parts, the weight of the thermosetting fluoro carbon resin curing agent
Measuring number is 3-5 parts；
Preferably, the thermosetting fluoro carbon resin is trifluoro-ethylene-vinyl ethers-vinyl ester copolymer；
Preferably, the thermosetting fluoro carbon resin curing agent is blocked polyisocyanate；
Preferably, the anti-graffiti auxiliary agent is perfluoropolyether-modified acrylic resin.
8. powdery paints according to claim 1-7, which is characterized in that the powdery paints further includes 0.2-1
Part levelling agent；
Preferably, the levelling agent is polyacrylate levelling agent；
Preferably, the powdery paints further includes 0.1-0.5 parts of degassers；
Preferably, the degasser is styrax；
Preferably, the powdery paints further includes 0.1-0.5 parts of nano-gas-phase aluminium oxide；
Preferably, the powdery paints further includes 0.5-2 parts of pigment.
9. a kind of preparation method of such as described in any item powdery paints of claim 1-8, which is characterized in that the preparation method
Are as follows: each component is mixed, melting extrusion, then tabletting and crushes, obtain the powdery paints.
10. preparation method according to claim 9, which is characterized in that the temperature of the melting extrusion is 80-110 DEG C；
Preferably, it is described crushing be crushed to partial size be 20-80 μm；
Preferably, the preparation method includes the following steps:
(1) thermosetting fluoro carbon resin, anti-graffiti auxiliary agent and thermosetting fluoro carbon resin curing agent are mixed, double screw extruder is added
In, the melting extrusion at 80-110 DEG C, then tabletting, cooling, be crushed to partial size be 20-80 μm, sieve and cross 180 mesh nets, obtain
To the first mixed material；
(2) remaining each component is mixed, is added twin-screw extrude, the melting extrusion at 80-110 DEG C, then tabletting, cold
But, it is crushed to partial size and is 20-80 μm, sieves and cross 180 mesh nets, obtains the second mixed material；
(3) first mixed material and second mixed material are mixed, obtains the powdery paints.
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| CN114163905A (en) * | 2021-12-24 | 2022-03-11 | 老虎表面技术新材料（清远）有限公司 | Powder coating composition and coating thereof |
| CN114163905B (en) * | 2021-12-24 | 2023-02-14 | 老虎表面技术新材料（清远）有限公司 | Powder coating composition and coating thereof |
| WO2024056059A1 (en) * | 2022-09-16 | 2024-03-21 | Valspar Coatings (Shanghai) Co. Ltd. | Low temperature curing powder coating composition and articles formed therefrom |
| CN116333541A (en) * | 2023-02-21 | 2023-06-27 | 广东华江粉末科技有限公司 | Fingerprint-resistant low-temperature-cured matte powder coating and preparation and coating methods thereof |
| CN116333541B (en) * | 2023-02-21 | 2023-10-13 | 广东华江粉末科技有限公司 | Fingerprint-resistant low-temperature-cured matte powder coating and preparation and coating methods thereof |
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