CN106893461B - Compound powdery paints of pearl powder and preparation method thereof - Google Patents
Compound powdery paints of pearl powder and preparation method thereof Download PDFInfo
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- CN106893461B CN106893461B CN201710245255.8A CN201710245255A CN106893461B CN 106893461 B CN106893461 B CN 106893461B CN 201710245255 A CN201710245255 A CN 201710245255A CN 106893461 B CN106893461 B CN 106893461B
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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
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- 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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- 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
- C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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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
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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
- C08K3/02—Elements
- C08K3/04—Carbon
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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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34924—Triazines containing cyanurate groups; Tautomers thereof
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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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The invention belongs to powder coating technology fields, and in particular to a kind of compound powdery paints of pearl powder and preparation method thereof.The compound powdery paints of pearl powder is made of the following raw material: poly terephthalic acid neopentyl glycol ester, isocyanuric acid three-glycidyl ester, quaternary ammonium salt charge regulating agent, acrylic ester type levelling agent, styrax degasser, the structure of hindered amine light stabilizer, pigment, pearl powder.The compound powdery paints of pearl powder of the invention is high containing pearl powder, and the coating after spraying can reach the surface effect of liquid pearly coating, and chargeding performance is good, and electrostatic spraying construction is easy, and sprays stabilization.
Description
Technical field
The invention belongs to powder coating technology fields, and in particular to a kind of compound powdery paints of pearl powder and its preparation side
Method.
Background technique
Powdery paints is a kind of coating without solvent, 100% solid powdery.With Diamond Search discharge, recyclable benefit
With the advantages such as, film performance is excellent.Environmental requirement was continuously improved in various countries in recent years, and the coating material with pollution is also continuous
It is substituted, has obtained preferable development as the powdery paints with obvious environment-friendly advantage.Wherein in metal material, polymer plastic
Expect the different fields such as material, wooden material, powdery paints constantly replaces liquid paint, becomes using wider, more environmentally friendly
Coating new material.
Pearl powder is the mica sheet a kind of pearlescent pigment as main component coated with thin layer of metal oxide.Due to pearly-lustre
Powder can embody pearl effect by multipath reflection, interference to incident ray, therefore it is with soft pearly luster, this
Special gloss has the unrivaled effect of other pigment.And pearl powder possesses preferable weatherability, high temperature resistant, chemically-resistant
Product, electrical insulating property and the characteristics such as nontoxic, thus the coating with pearl powder be widely used in motor locomotive, building materials,
The numerous areas such as household electrical appliances, furniture, articles for daily use, general industry.
For current, pearly-lustre powder content higher coating material more preferable for pearl effect is largely that liquid paint applies
Material, and its type for belonging to higher-end in coating.The powdery paints of environmental protection can replace oil substantially in other kinds
Qi Liao, but due to the characteristic of powdery paints and pearl powder, applied using the powder that conventional preparation techniques prepare high pearly-lustre powder content
Material is relatively difficult.This is as caused by following reason: the preparation of powdery paints needs to squeeze by the melting mixing of raw material
Out, high speed crushes, if adding pearl powder in this process, although it can preferably be bonded with powdery paints,
It is that melting mixing squeezes out and high-speed breakage can all damage pearl powder surface texture, the effect of pearly-lustre cannot be shown.It wants
Reach preferable pearl effect, pearl powder must be added again after powdery paints is made.Powdery paints and pearl powder are all solid
Body particle, but the mica sheet of pearl powder is insulation, chargeding performance is very poor.And the later period spraying of powdery paints is all by quiet
Electric spray gun sprays powder particle electrification.Therefore pearl powder is added in powdery paints, in the spraying application in later period
In due to powder particle and pearl powder particle carried charge it is different, will cause film coated surface pearl powder be unevenly distributed, appearance of film not
The problems such as stablizing.
Preparing the compound powdery paints of pearl powder and studying more method has three classes, first is that dry mixing process, has technical staff
The features such as skill is simple, and equipment is simple, but dry-mixed rear pearlescent particles can not be sticked together with powder coating particles, so pearl
Light powder paint is unstable in electrostatic spraying, and workpiece surface pearl powder is unevenly distributed, and influences coating surface beauty.And it does
Mixed technique is difficult to prepare the compound powdery paints of high pearly-lustre powder content.Such as Chinese patent CN103160181A, disclose one
Kind Pearlescent powder paint and preparation method thereof, Pearlescent powder paint of the invention is exactly by powder coating particles and silver powder pearl powder
Particle carries out dry-mixed preparation.
It is for second bonding techniques, the specific bonding equipment of this process requirement and is set according to different powdery paints different
Bonding process parameter.Compared to dry mixing process, the pearly-lustre composite powder coatings of bonding preparation have more stable performance.Bonding work
Skill is that powdery paints is preheating to its softening point, and the skill that it is sticked together by pearl powder with powder coating particles is then added
Art, therefore powdery paints two kinds of particles in electrostatic spraying will not separate, spraying effect is more stable.But since powdery paints is every
The pearlescent particles that a particle is capable of adhesion are limited, therefore after excessive pearlescent particles are added in bonding process, will
There is the problems such as bonding effect is poor, and effect is unstable after spraying.Bonding process is not suitable for equally preparing high pearly-lustre content yet
Powdery paints.Such as Chinese patent CN103146272A, disclose a kind of metal powder coating and its system for enhancing flash effect
Preparation Method applies the powdery paints that enhancing flash effect has been prepared in bonding techniques.Chinese patent CN103820010A,
A kind of aluminum profile flash of light stereo wood pattern powdery paints and preparation method thereof and the spraying process of the powdery paints are disclosed, is answered
The wood grain powdery paints of flash effect has been prepared with bonding process.
The third is using unconventional preparation method.And can to prepare high pearly-lustre powder content powdery paints most ideal
Method.Such as Chinese patent CN101302366, disclose a kind of metal powder coating and preparation method thereof and coating metal
Plate.Preparation method of the present invention is dissolved coating resin using organic solvent, and pigment and filler is then added, by high speed dispersion,
Metallic pigments are added to be mixed, using the method that pressure atomization is dry, obtain the metal that metallic pigments are uniformly wrapped up by resin
Powdery paints powder.The present invention effectively solves the prior art and is difficult to produce the uniform metal powder coating of electrification.But due to
Organic solvent is used in its technique, pollution is caused to environment to a certain extent, and organic solvent is to part raw material
Performance can have an impact.
In addition supercritical CO is used2The research that fluid technique prepares the powdery paints of different function is more, but because every
The function of a coating is different, although all using the same technology of preparing, for being formulated design, raw material of powdery paints
It is all different with use.These patents have different technical essentials to solve different technical problems, therefore exist each other
Different technical solutions.Such as Chinese patent CN104559694A, disclose a kind of thermosetting property ultrafine powder paint and its preparation
Method.It uses supercritical CO2Fluids process is made, and raw material include 30-70 parts of resin；2-25 parts of curing agent；Styrax
0.2-0.7 parts；0.05-0.75 parts of levelling agent；0.1-0.4 parts of degasser；2.5-22.5 parts and antioxidant 0-5 parts of pigments and fillers.Powder
Last coating partial size is at 10-20 μm, and particle diameter distribution is uniform, geometric configuration is uniform, coating film thickness is between 30-50 μm；It can apply
In there is the fields such as scumbling requirement, automobile finish or acrylic acid powder coatings.Chinese patent CN104109453A is disclosed a kind of multiple
Combination functional form agricultural machinery clear top powder coatings and its production technology.The powdery paints includes the component of following mass parts: poly-
Ester/2-8 parts of acrylic resin compound, 30-50 parts of polyester resin, 12-22 parts of epoxy modified acrylic resin, nanometer glass
20-35 parts of powder, 1-5 parts of crosslinking agent, 1-2.5 parts of auxiliary agent；Preparation method uses supercritical carbon dioxide fluid method.The powder applies
Material can it is antiseptic and rustproof, again with excellent weatherability, energy consumption in production process is small, high-efficient, reduces production and processing temperature.
Chinese patent CN104140746A discloses a kind of compound functionalization infrared external reflection engineering machinery powdery paints and its production work
Skill.The powdery paints includes the component of following mass parts: 2-8 parts of polyester/acrylic resin compound, 30-50 parts of polyester resin,
10-20 parts of epoxy modified acrylic resin, 15-35 parts of infrared reflecting paint, 1-5 parts of crosslinking agent, 8-18 parts of filler, auxiliary agent 1-
2.5 part；Its production technology uses supercritical carbon dioxide fluid method.The powdery paints had not only had antiseptic and rustproof but also had had excellent
Weatherability, energy consumption in production process is small, high-efficient, reduces production and processing temperature.Chinese patent CN105885499A, discloses one
Kind thermosetting property scratch resistance open air low brightness paint powder and its preparation process.This powdery paints mainly includes at least one containing epoxy group
Resin such as epoxy group acrylic resin, epoxy resin, triglycidyl isocyanurate and at least one carboxylic resin are such as
Carboxyl polyester resin, carboxyl acrylic resin composition.Outdoor low brightness paint powder of the invention is by the supercritical carbon dioxide
So that coating various composition fluidisation and prepare, have scratch resistance good, the features such as gloss can drop to 5%.
Summary of the invention
The object of the present invention is to provide a kind of compound powdery paints of pearl powder, have pearly-lustre powder content is high, charging property is good,
The characteristics of powder coating particles are microspheroidal, electrostatic spraying is stable, hardness of film is high, good weatherability, instead of the paint of Pearly-lustre type,
As using wider array of, more environmentally friendly coating new material；Invention also provides the preparations of the compound powdery paints of pearl powder
Method, it is scientific and reasonable, simple and easy.
The compound powdery paints of pearl powder of the present invention, is made of the raw material of following weight percent:
The acid value of the poly terephthalic acid neopentyl glycol ester is 28-40mgKOH/g.
The quaternary ammonium salt charge regulating agent is 3- dodecanamide propyl trimethylammoniumethyl sulfuric acid methyl ester.
The structure of hindered amine light stabilizer is the Tinuvin 144 of BASF AG.
The pigment is titanium dioxide pigment or charcoal blacks.
The preparation method of the compound powdery paints of pearl powder of the present invention is put into raw material in supercritical reaction kettle
It is uniformly mixed, controls CO in reaction kettle2Content, temperature, pressure and ejiction opening temperature to get.
The CO2Content is 20-45wt%.
The temperature is 45-75 DEG C.
The pressure is 80-120Kg/cm2。
The ejiction opening temperature is 55-60 DEG C.
Technical principle of the invention is as follows:
(1) present invention uses supercritical CO2Fluid technique prepares the compound powdery paints of pearl powder, is different from tradition completely
Preparation process, the compound powdery paints that pearly-lustre powder content is high, electrostatic spraying is stable can be prepared.
It is first to prepare powder coating particles since traditional handicraft prepares pearl powder type powdery paints, is by the way that powder is applied
The processes such as the raw material of material carry out melting mixing extrusion, high speed crushes, this is in the process due to there are higher temperature and relatively strong
Shearing force, pearl powder is easily broken and loses due pearl effect, this process is to be not suitable for addition pearl powder.
However pearl powder adds again after powdery paints is made, since powdery paints and pearl powder are all solid particle, powdery paints is very
Difficulty wraps up pearly-lustre powder particles completely, and two kinds of particles are essentially distinct.But the mica sheet of pearl powder is insulation, band
Electrical property is very poor.And the later period spraying of powdery paints is all to be sprayed powder particle electrification by electrostatic gun.Therefore
Pearl powder is added in powdery paints, in the spraying application in later period not due to powder particle and pearl powder particle carried charge
Together, with the increase of pearly-lustre powder content, film coated surface pearl powder can be significantly caused and be unevenly distributed, appearance of film is unstable etc. asks
Topic.
Using supercritical CO2Fluid technique prepares the compound powdery paints of pearl powder, due in CO2Reach supercriticality
When, the raw material of the compound powdery paints of pearl powder in autoclave are also fluid state, and various raw material and pearl powder can
High temperature and high shear force is not present in mixing well, whole process, and after powdery paints is sprayed from nozzle, pearly-lustre powder particles can be with
By powdery paints, other raw material are preferably wrapped.This technology can prepare that pearly-lustre powder content is high, electrostatic spraying is steady
The compound powdery paints of fixed pearl powder.
(2) process characteristic is designed and prepared according to formula in powdery paints of the present invention, is added to the adjustment of quaternary ammonium salt charge
Agent.Compared to traditional powdery paints, the compound powdery paints of pearl powder of the invention due to the pearl powder containing more amount, and
Pearl powder is with mica sheet particle as main component, and charging property is poor.Therefore it is applied to improve the compound powder of pearl powder
Stability and charging property when material is using electrostatic spraying, in the formula design of this patent product, according to of other raw material
With characteristic and compatibility, it is added to quaternary ammonium salt charge regulating agent.Quaternary ammonium salt charge regulating agent is cationic antistatic agent,
Since it adsorbs with surface active properties the moisture in air, surfactant generates polarization or ionization, is formed very thin
Conductive layer, form the conductive channel of charge, thus play the role of in powder coating electrostatic spraying charge adjustment, promote not
The stability of the compound powder coating electrostatic spraying of the pearl powder easily charged.
(3) process characteristic is designed and prepared according to formula in powdery paints of the present invention, is added to the structure of hindered amine light and stablizes
Agent.The structure of hindered amine light stabilizer is a kind of light stabilizer with the structure of hindered amine, since the structure of hindered amine is with biggish
Dielectric constant, polarity is larger, and composite powder coatings are using that can generate polarization when electrostatic spraying, to promote pearl powder compound
Powdery paints electrification, improves its electrostatic spraying stability.And the structure of hindered amine light stabilizer being capable of uvioresistant, hence it is evident that improves
The outdoor ageing-resistant performance of coating, thus play in the compound powder coating formulation design of this patent pearl powder it is dual and compared with
Important role.
And quaternary ammonium salt charge regulating agent and the structure of hindered amine light stabilizer are all and other in this patent product formula
Raw material matching and the preferable material of compatibility, will not generate negative effect while improving its charging property and weather resistance,
Preferable comprehensive performance is brought to the compound powdery paints of pearl powder of this patent.
(4) due to being formulated the improvement with technique, the compound powdery paints of this patent pearl powder pearl powder with higher contains
Amount.Pearl powder has preferable weather resistance and higher hardness, therefore the compound powder paint of pearl powder of this patent
Coating also there is preferable weatherability and hardness, excellent combination property.
The present invention is prepared pearly-lustre powder particles in the compound powdery paints of pearl powder and is partially or completely package, entirely
Powder coating particles are microspheroidal.
The present invention is designed formula, selects the good raw material of compatibility, and is not easy to charge according to pearl powder, electrostatic
The difficult feature of spraying is adjusted formula, using supercritical CO2Fluid technique is prepared pearl powder and is wrapped up by powdery paints
Good, pearly-lustre powder content is high, and powdery paints charging property is good, and electrostatic spraying is stablized, and hardness of film is high, the pearl powder of good weatherability is compound
Type powdery paints.The compound powdery paints excellent combination property of high pearly-lustre powder content of the invention, and VOC free discharges, tool
There is apparent environment-friendly advantage, has certain impetus to the paint for replacing high pearly-lustre powder content.
Compared with prior art, the present invention having the following beneficial effects:
(1) the compound powdery paints of pearl powder of the invention is high containing pearl powder, and the coating after spraying can reach liquid bead
The surface effect of optical coating.
(2) pearl powder is wrapped by preferably in the compound powdery paints of pearl powder of the invention, powder coating particles and pearly-lustre
Powder particles will not be kept completely separate, and electrostatic spraying is stablized, and pearl powder is evenly distributed in film.
(3) the compound powdery paints chargeding performance of pearl powder of the invention is good, and electrostatic spraying construction is easy, and sprays steady
It is fixed.
(4) the compound weathering resistance performance powder paint of pearl powder of the invention is than common Pearlescent powder paint outdoor weathe resistance energy
More preferable and hardness is bigger.
Specific embodiment
The present invention is described further with reference to embodiments.
Embodiment 1
Raw material composition is as follows, by weight percentage:
The acid value of poly terephthalic acid neopentyl glycol ester is 28mgKOH/g.
Quaternary ammonium salt charge regulating agent is 3- dodecanamide propyl trimethylammoniumethyl sulfuric acid methyl ester.
The structure of hindered amine light stabilizer is the Tinuvin 144 of BASF AG.
Raw material is put into supercritical reaction kettle and is uniformly mixed, CO in reaction kettle is controlled2Content is 38wt%, temperature 66
DEG C, pressure 110Kg/cm2, ejiction opening temperature is 58 DEG C.Pearly-lustre powder particles are prepared and are partially or completely package, entirely
Powder coating particles are the compound powdery paints of pearl powder of microspheroidal.
1 product specific performance of embodiment is shown in Table 1.
Embodiment 2
Raw material composition is as follows, by weight percentage:
The acid value of poly terephthalic acid neopentyl glycol ester is 40mgKOH/g.
Quaternary ammonium salt charge regulating agent is 3- dodecanamide propyl trimethylammoniumethyl sulfuric acid methyl ester.
The structure of hindered amine light stabilizer is the Tinuvin 144 of BASF AG.
Raw material is put into supercritical reaction kettle and is uniformly mixed, CO in reaction kettle is controlled2Content is 26wt%, temperature 52
DEG C, pressure 95Kg/cm2, ejiction opening temperature is 56 DEG C.Pearly-lustre powder particles are prepared and are partially or completely package, entirely
Powder coating particles are the compound powdery paints of pearl powder of microspheroidal.
2 product specific performance of embodiment is shown in Table 1.
Embodiment 3
Raw material composition is as follows, by weight percentage:
The acid value of poly terephthalic acid neopentyl glycol ester is 30mgKOH/g.
Quaternary ammonium salt charge regulating agent is 3- dodecanamide propyl trimethylammoniumethyl sulfuric acid methyl ester.
The structure of hindered amine light stabilizer is the Tinuvin 144 of BASF AG.
Raw material is put into supercritical reaction kettle and is uniformly mixed, CO in reaction kettle is controlled2Content is 42wt%, temperature 49
DEG C, pressure 115Kg/cm2, ejiction opening temperature is 60 DEG C.Pearly-lustre powder particles are prepared and are partially or completely package, entirely
Powder coating particles are the compound powdery paints of pearl powder of microspheroidal.
3 product specific performance of embodiment is shown in Table 1.
1 embodiment 1-3 product correlated performance test result of table
As shown in Table 1, the compound powdery paints of pearl powder that embodiment 1-3 is obtained has pearly-lustre powder content height, charging property
The features such as good, electrostatic spraying stabilization, hardness of film height, good weatherability, comprehensive performance meets or better than country or industry mark
It is quasi-.
Claims (5)
1. a kind of preparation method of the compound powdery paints of pearl powder, it is characterised in that by the raw material system of following weight percent
At:
Poly terephthalic acid neopentyl glycol ester 46-89%
Isocyanuric acid three-glycidyl ester 2.5-7.2%
Quaternary ammonium salt charge regulating agent 0.3-1.2%
Acrylic ester type levelling agent 0.4-1.2%
Styrax degasser 0.1-0.8%
The structure of hindered amine light stabilizer 0.2-0.8%
Pigment 0-26%
Pearl powder 4-30%；
The acid value of the poly terephthalic acid neopentyl glycol ester is 28-40mgKOH/g；
The quaternary ammonium salt charge regulating agent is 3- dodecanamide propyl trimethylammoniumethyl sulfuric acid methyl ester；
The structure of hindered amine light stabilizer is the Tinuvin 144 of BASF AG；
The pigment is titanium dioxide pigment or charcoal blacks；
The preparation method is to be put into raw material in supercritical reaction kettle to be uniformly mixed, and controls CO in reaction kettle2Content, temperature,
Pressure and ejiction opening temperature to get.
2. the preparation method of the compound powdery paints of pearl powder according to claim 1, it is characterised in that the CO2Contain
Amount is 20-45wt%.
3. the preparation method of the compound powdery paints of pearl powder according to claim 1, it is characterised in that the temperature
It is 45-75 DEG C.
4. the preparation method of the compound powdery paints of pearl powder according to claim 1, it is characterised in that the pressure
For 80-120Kg/cm2。
5. the preparation method of the compound powdery paints of pearl powder according to claim 1, it is characterised in that the ejection
Mouth temperature is 55-60 DEG C.
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| CN108299914B (en) * | 2018-02-02 | 2020-05-12 | 广西零到壹科技有限责任公司 | Electrostatic additive for powder coating, preparation method and application thereof |
| CN116554768A (en) * | 2023-05-08 | 2023-08-08 | 上海彩立嵘新材料科技有限公司 | Preparation method of high-decorative colorful powder coating |
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| CN104140746B (en) * | 2014-07-28 | 2016-08-17 | 漳州三德利油漆涂料有限公司 | Compound functionalization infrared external reflection engineering machinery powdery paints and production technology thereof |
| CN104559694B (en) * | 2014-12-31 | 2017-04-26 | 山东麦都孚新材料科技有限公司 | Thermosetting ultrafine powder coating and preparation method thereof |
| CN106634479B (en) * | 2016-12-30 | 2019-05-14 | 山东麦都孚新材料科技有限公司 | Metal coiled material extra-weather-proof microspheroidal powdery paints and preparation method thereof of supercritical fluid technique preparation |
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| CN106893461A (en) | 2017-06-27 |
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