CN110117452A - A kind of high light transmission powdery paints and preparation method - Google Patents
A kind of high light transmission powdery paints and preparation method Download PDFInfo
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- CN110117452A CN110117452A CN201811237689.4A CN201811237689A CN110117452A CN 110117452 A CN110117452 A CN 110117452A CN 201811237689 A CN201811237689 A CN 201811237689A CN 110117452 A CN110117452 A CN 110117452A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/199—Acids or hydroxy compounds containing cycloaliphatic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
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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
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- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention discloses a kind of high light transmission powdery paints and preparation methods, the high light transmission powdery paints, it is constituted including following parts by weight component: polyester resin 55~60, curing agent 4~5, levelling agent 0.6~1.0, optical brightener 0.5~1.0, defoaming agent 0.3~0.5, wax powder 0.5~1.5, filler 25~35, pigment 4~5；The preparation method of above-mentioned coating, comprising the following steps: step 1, raw material is uniformly mixed by premixing；Step 2, mixture step 1 obtained squeezes out；Step 3, it crushes, the product that step 2 is obtained crushes, and obtains uniform particle sizes and charge good powder to be product powdery paints, D10 is not less than 12 μm, and D50=34 ± 1 μm, D90 is not more than 61 μm, and powder temperature is not more than 30 DEG C.Have surface of the paint film good using this coating, higher levelability and bright property, the full exquisiteness of color, fresh and clean feature.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of high light transmission powdery paints and preparation method.
Background technique
Powdery paints is a kind of novel not solvent-laden solid powdery coating, is melted in use through overbaking
The coating of levelling film-forming.It, can be to avoid organic solvent bring water pollution, environmental pollution, fire danger due to being free of solvent
Danger and the problems such as being detrimental to health, be a kind of low pollution Environmentally friendly coatings.In addition, powdery paints can recycle,
Some powder for crossing spray can recycle, and highest utilization rate is up to 99%.The film physical and mechanical property of formation and resistance toization
It is good compared with solvent type and water paint many to learn the performances such as medium.Powdery paints is considered as high efficiency, excellent painting film property
Energy, ecological environment-friendly type and Eco-power excellent coating products.
In powder coating industry, high glaze is finally obtained, bright surface is the pursuit of many clients always, such as
In bicycle production industry, client is when spraying cycle frame, using common powdery paints, spray coating process are as follows: for the first time
Baking uses 190 DEG C, and baking time 20 minutes, film-forming, then applique and trade mark, then carry out second time baking, baking temperature
It is 150 DEG C, baking time 20 minutes, after cooling, coating unclarity often occurred in obtained sprayed surface effect, and misty phenomenon is tight
The problems such as weight.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of high light transmission powdery paints and preparation method,
The high light transmission powdery paints has surface of the paint film good using this coating, higher levelability and bright property, full exquisiteness, clearly
New natural feature.
The present invention is achieved by the following technical solutions:
A kind of high light transmission powdery paints, including following parts by weight component are constituted: polyester resin 55~60, and curing agent 4~
5, levelling agent 0.6~1.0, optical brightener 0.5~1.0, defoaming agent 0.3~0.5, wax powder 0.5~1.5, filler 25~35, pigment 4
~5；
Wherein the polyester resin is made of following methods:
Step 1: alcohol being heated to 120 DEG C and is completely melt to alcohol, with 120~180 turns of revolving speed per minute stirring, then is put into
Acid and esterification catalyst, are warming up to 175 DEG C, later again with the heating rate of 5 DEG C/30min to 240~250 DEG C, maintain acid value extremely
8~12mg KOH/g；The alcohol is 22%~26% neopentyl glycol, 10%~15% ethylene glycol, 30%~35%1,4- hexamethylene
The mixture of alkane dimethanol, 23%~25%1,6- hexylene glycol and 5%~8%2- ethyl -2- butyl -1,3 propylene glycol, the acid
For 48%~55% terephthalic acid (TPA), the mixture of 25%~30% M-phthalic acid and 20%~25% adipic acid, the alcohol
Dosage be sour 2~3 times of the quality, the esterification catalyst is PC4100；
Step 2: the product investment antioxidant and acid completed to step 1 are warming up to 240 DEG C of maintenance reactions again, maintain extremely
Reactant is limpid, 43~47mgKOH/g of sampling detecting acid number, and the antioxidant is triphenyl phosphite, the acid for 48%~
The mixture of 55% terephthalic acid (TPA), 25%~30% M-phthalic acid and 20%~25% adipic acid；
Step 3: the product after the completion of step 2 being cooled to 200~250 DEG C, with the relative vacuum of -0.08~-0.1MPa
Degree vacuumizes 2~3 hours, is cooled to room temperature again later, obtains the polyester resin；
In above-mentioned technical proposal, the polyester resin acid value is 30.0~35.0mg KOH/g, and viscosity is 0.4~0.5
200 DEG C/PaS, glass transition temperature >=55 DEG C.
Mass percent in above-mentioned technical proposal, in step 1 as each substance in the alcohol of reactant are as follows: the alcohol is
24%~26% neopentyl glycol, 12%~14% ethylene glycol, 30%~32%1,4- cyclohexanedimethanol, 23%~25%1,6-
Hexylene glycol and 5%~7%2- ethyl -2- butyl -1,3 propylene glycol, the mass percent as each substance in the acid of reactant are
49%~52% terephthalic acid (TPA), 28%~30% M-phthalic acid, 20%~22% adipic acid.
In the above-mentioned technical solutions, the polyester resin is alkyd resin, and the curing agent shrinks sweet for isocyanuric acid three
Grease, the levelling agent are Voncoat R 3310 and copolymer, and the optical brightener is butyl acrylate and methyl methacrylate
The copolymer of ester, the defoaming agent are diphenylhydroxyethanone, and the wax powder is polyethylene wax powder, and the filler is barium sulfate.
In above-mentioned technical proposal, the high light transmission powdery paints further includes the pigment dispersing agent of 0.5~1 parts by weight, described
Pigment dispersing agent is surfactant.
In the above-mentioned technical solutions, the surfactant is L-113 type polymer wax.
A kind of high light transmission powdery paints, including following parts by weight component are constituted: alkyd resin 55~60, isocyanuric acid three
Ethylene oxidic ester 4~5, Voncoat R 3310 and copolymer 0.6~1.0, butyl acrylate and methyl methacrylate are total to
Polymers 0.5~1.0, diphenylhydroxyethanone 0.3~0.5, polyethylene wax powder 0.5~1.5, barium sulfate 25~35, pigment 4~5；
Wherein the alkyd resin is made of following methods:
Step 1: alcohol being heated to 120 DEG C and is completely melt to alcohol, with 120~180 turns of revolving speed per minute stirring, then is put into
Acid and esterification catalyst, are warming up to 175 DEG C, later again with the heating rate of 5 DEG C/30min to 240~250 DEG C, maintain acid value extremely
8~12mg KOH/g；Alcohol, acid and the mass percent for each accounting for alcohol acid blend are as follows: the alcohol be 17.4% neopentyl glycol,
9.1% ethylene glycol, 20.8%1,4- cyclohexanedimethanol, 16.4%1,6- hexylene glycol and 4.6%2- ethyl -2- butyl -1,3 third
Glycol, it is described acid be 15.9% terephthalic acid (TPA), 9.2% M-phthalic acid, 6.6% adipic acid, the dosage of the alcohol with it is described
The ratio of sour quality is 2.15:1, and the esterification catalyst is PC4100；
Step 2: putting into antioxidant and acid in the product completed to step 1, be warming up to 240 DEG C of maintenance reactions again, maintain
It is limpid to reactant, 43~47mgKOH/g of sampling detecting acid number, the antioxidant be triphenyl phosphite, acid be terephthalic acid (TPA),
M-phthalic acid, adipic acid；
Step 3: the product after the completion of step 2 being cooled to 235 DEG C, it is small to vacuumize 2 with the relative degree of vacuum of -0.096MPa
When, it is cooled to room temperature again later, obtains the alkyd resin；
A kind of preparation method of above-mentioned coating, comprising the following steps:
Step 1, it is pre-mixed, by the polyester resin of parts by weight described in above-mentioned technical proposal, curing agent, levelling agent increases
Photo etching, defoaming agent, wax powder, pigment dispersing agent, filler, pigment are uniformly mixed；
Step 2, mixture step 1 obtained squeezes out, and 1 area's temperature of extrusion process extruder is 90 DEG C of ± 2,2 area's temperature
It is 105 DEG C of ± 2,4 area's temperature is 100 DEG C ± 2 that degree, which be 95 DEG C of ± 2,3 area's temperature, and lower head piece temperature of charge is controlled 120~125
Between DEG C, screw speed 45HZ ± 2, screw(-type) feeder revolving speed 20HZ ± 2 keep the abundant melting mixing of material uniform；
Step 3, crush, the product that step 2 is obtained crushes, the crushing process pulverizer: main mill be set in 48HZ ±
2, pair mill is set in 22HZ ± 2, and pressure feeding spiral conveyer is set in 18HZ ± 2, and air inlet wind chill temperatures are not more than 10 DEG C, crushes
Product is sieved using sieve afterwards, and fine powder enters dust bucket by rotating separation, and coarse powder only sieve is recycled into coarse powder
Case obtains uniform particle sizes under sieve and charges good powder to be product powdery paints.
In above-mentioned technical proposal, the step 2, extrusion process uses 60 extruder of Sheng Shida, and the crushing process uses
05 grinding machine of Sheng Shida.
In above-mentioned technical proposal, the step 3, smashed product is sieved using 180 mesh antistatic sieves, fine powder
Enter dust bucket by rotating separation, only sieve into coarse powder recycling bins it is good to obtain uniform particle sizes' electrification to coarse powder under sieve
Powder is product powdery paints, and D10 is not less than 12 μm, and D50=34 ± 1 μm, D90 is not more than 61 μm, and powder temperature is not more than
30℃。
The advantages and benefits of the present invention are:
High light transmission powdery paints produced by the invention is a kind of high bright not misty powdery paints, using of the invention
The coating surface of coating material production has surface of the paint film good, higher levelability and bright property, full exquisiteness, fresh and clean spy
Point completely solves in the market under different process and baking condition, and to coating surface high brightness, requirement high-definition reaches
To the painting effect for the painted surface that matches in excellence or beauty under the premise of environmental protection.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, combined with specific embodiments below furtherly
Bright technical solution of the present invention.
Embodiment 1
The present invention is achieved by the following technical solutions:
A kind of high light transmission powdery paints, including following parts by weight component are constituted:
Alkyd resin: 58 parts
Isocyanuric acid three-glycidyl ester (chemical plant TGIC Niu Tang): 4.1 parts
Voncoat R 3310 and copolymer (the modest chemical industry of 896D moral): 0.8 part
The copolymer (South Sea 701B chemistry) of butyl acrylate and methyl methacrylate: 0.8 part
Diphenylhydroxyethanone (South Sea Benzoin chemistry): 0.4 part
Polyethylene wax powder (PE520 Clariant): 0.1 part
Surfactant (polymer wax): 0.5 part
Pigment: 4.5 parts
Barium sulfate: 31 parts
Wherein the alkyd resin is made of following methods:
Step 1: alcohol being heated to 120 DEG C and is completely melt to alcohol, with 120~180 turns of revolving speed per minute stirring, then is put into
Acid and esterification catalyst, are warming up to 175 DEG C, later again with the heating rate of 5 DEG C/30min to 240~250 DEG C, maintain acid value extremely
8~12mg KOH/g；Alcohol, acid and the mass percent for each accounting for alcohol acid blend are as follows: the alcohol be 17.4% neopentyl glycol,
9.1% ethylene glycol, 20.8%1,4- cyclohexanedimethanol, 16.4%1,6- hexylene glycol and 4.6%2- ethyl -2- butyl -1,3 third
Glycol, it is described acid be 15.9% terephthalic acid (TPA), 9.2% M-phthalic acid, 6.6% adipic acid, the dosage of the alcohol with it is described
The ratio of sour quality is 2.15:1, and the esterification catalyst is PC4100；
Step 2: putting into antioxidant and acid in the product completed to step 1, be warming up to 240 DEG C of maintenance reactions again, maintain
It is limpid to reactant, 43~47mgKOH/g of sampling detecting acid number, the antioxidant be triphenyl phosphite, acid be terephthalic acid (TPA),
M-phthalic acid, adipic acid；
Step 3: the product after the completion of step 2 being cooled to 235 DEG C, it is small to vacuumize 2 with the relative degree of vacuum of -0.096MPa
When, it is cooled to room temperature again later, obtains the alkyd resin；
The alkyd resin acid value be 35.0mg KOH/g, viscosity be 0.48 200 DEG C/Pas, 65 DEG C of glass transition temperature.
The preparation method of above-mentioned coating, comprising the following steps:
Step 1, it is pre-mixed, by following parts by weight:
Alkyd resin: 58 parts
Isocyanuric acid three-glycidyl ester (chemical plant TGIC Niu Tang): 4.1 parts
Voncoat R 3310 and copolymer (the modest chemical industry of 896D moral): 0.8 part
The copolymer (South Sea 701B chemistry) of butyl acrylate and methyl methacrylate: 0.8 part
Diphenylhydroxyethanone (South Sea Benzoin chemistry): 0.4 part
Polyethylene wax powder (PE520 Clariant): 0.1 part
Surfactant (polymer wax): 0.5 part
Pigment: 4.5 parts
Barium sulfate: 31 parts
It is uniformly mixed；
Step 2, mixture step 1 obtained squeezes out, and extrusion process uses 60 extruder of Sheng Shida, 1st area of extruder
Temperature is 90 DEG C, and 2 area's temperature are 95 DEG C, and 3 area's temperature are 105 DEG C, and 4 area's temperature are 100 DEG C, and lower head piece temperature of charge control exists
Between 120~125 DEG C, screw speed 45HZ, screw(-type) feeder revolving speed 20HZ keep the abundant melting mixing of material uniform；
Step 3, it crushing, the product that step 2 is obtained crushes, and the crushing process uses 05 grinding machine of Sheng Shida,
Pulverizer: main mill is set in 48HZ, and pair mill is set in 22HZ, and pressure feeding spiral conveyer is set in 18HZ, air inlet wind chill temperatures
No more than 10 DEG C, smashed product is sieved using 180 mesh antistatic sieves, and fine powder enters dust by rotating separation
Bucket, only sieve obtains uniform particle sizes and charges good powder to be that product powder applies coarse powder into coarse powder recycling bins under sieve
Material, D10 are not less than 12 μm, and D50=34 ± 1 μm, D90 is not more than 61 μm, and powder temperature is not more than 30 DEG C.
Embodiment 2
The present invention is achieved by the following technical solutions:
A kind of high light transmission powdery paints, including following parts by weight component are constituted:
Alkyd resin: 60 parts
Isocyanuric acid three-glycidyl ester (chemical plant TGIC Niu Tang): 5.2 parts
Voncoat R 3310 and copolymer (the modest chemical industry of 896D moral): 0.8 part
The copolymer (South Sea 701B chemistry) of butyl acrylate and methyl methacrylate: 0.8 part
Diphenylhydroxyethanone (South Sea Benzoin chemistry): 0.4 part
Polyethylene wax powder (PE520 Clariant): 0.1 part
Surfactant (L-113, Lubrizol Corp.): 0.8 part
Pigment: 4.5 parts
Barium sulfate (blanc fixe, Fu Bang): 28 parts
Wherein the alkyd resin is made of following methods:
Step 1: alcohol being heated to 120 DEG C and is completely melt to alcohol, with 120~180 turns of revolving speed per minute stirring, then is put into
Acid and esterification catalyst, are warming up to 175 DEG C, later again with the heating rate of 5 DEG C/30min to 240~250 DEG C, maintain acid value extremely
8~12mg KOH/g；Alcohol, acid and the mass percent for each accounting for alcohol acid blend are as follows: the alcohol be 17.4% neopentyl glycol,
9.1% ethylene glycol, 20.8%1,4- cyclohexanedimethanol, 16.4%1,6- hexylene glycol and 4.6%2- ethyl -2- butyl -1,3 third
Glycol, it is described acid be 15.9% terephthalic acid (TPA), 9.2% M-phthalic acid, 6.6% adipic acid, the dosage of the alcohol with it is described
The ratio of sour quality is 2.15:1, and the esterification catalyst is PC4100；
Step 2: putting into antioxidant and acid in the product completed to step 1, be warming up to 240 DEG C of maintenance reactions again, maintain
It is limpid to reactant, 43~47mgKOH/g of sampling detecting acid number, the antioxidant be triphenyl phosphite, acid be terephthalic acid (TPA),
M-phthalic acid, adipic acid；
Step 3: the product after the completion of step 2 being cooled to 235 DEG C, it is small to vacuumize 2 with the relative degree of vacuum of -0.096MPa
When, it is cooled to room temperature again later, obtains the alkyd resin；
The alkyd resin acid value be 35.0mg KOH/g, viscosity be 0.48 200 DEG C/Pas, 65 DEG C of glass transition temperature.
The preparation method of above-mentioned coating, comprising the following steps:
Step 1, it is pre-mixed, by following parts by weight:
Alkyd resin: 60 parts
Isocyanuric acid three-glycidyl ester (chemical plant TGIC Niu Tang): 5.2 parts
Voncoat R 3310 and copolymer (the modest chemical industry of 896D moral): 0.8 part
The copolymer (South Sea 701B chemistry) of butyl acrylate and methyl methacrylate: 0.8 part
Diphenylhydroxyethanone (South Sea Benzoin chemistry): 0.4 part
Polyethylene wax powder (PE520 Clariant): 0.1 part
Surfactant (L-113, Lubrizol Corp.): 0.8 part
Pigment: 4.5 parts
Barium sulfate (blanc fixe, Fu Bang): 28 parts
It is uniformly mixed；
Step 2, mixture step 1 obtained squeezes out, and extrusion process uses 60 extruder of Sheng Shida, 1st area of extruder
Temperature is 90 DEG C, and 2 area's temperature are 95 DEG C, and 3 area's temperature are 105 DEG C, and 4 area's temperature are 100 DEG C, and lower head piece temperature of charge control exists
Between 120~125 DEG C, screw speed 45HZ, screw(-type) feeder revolving speed 20HZ keep the abundant melting mixing of material uniform；
Step 3, it crushing, the product that step 2 is obtained crushes, and the crushing process uses 05 grinding machine of Sheng Shida,
Pulverizer: main mill is set in 48HZ, and pair mill is set in 22HZ, and pressure feeding spiral conveyer is set in 18HZ, air inlet wind chill temperatures
No more than 10 DEG C, smashed product is sieved using 180 mesh antistatic sieves, and fine powder enters dust by rotating separation
Bucket, only sieve obtains uniform particle sizes and charges good powder to be that product powder applies coarse powder into coarse powder recycling bins under sieve
Material, D10 are not less than 12 μm, and D50=34 ± 1 μm, D90 is not more than 61 μm, and powder temperature is not more than 30 DEG C.
Comparative example:
A kind of powdery paints, including following parts by weight component are constituted:
Alkyd resin (4#ET Shen Jian new material Co., Ltd): 60 parts
Isocyanuric acid three-glycidyl ester (chemical plant TGIC Niu Tang): 4.5 parts
Voncoat R 3310 and copolymer (the modest chemical industry of 896D moral): 0.8 part
The copolymer (South Sea 701B chemistry) of butyl acrylate and methyl methacrylate: 0.8 part
Diphenylhydroxyethanone (South Sea Benzoin chemistry): 0.4 part
Polyethylene wax powder (PE520 Clariant): 0.1 part
Surfactant (polymer wax): 0.5 part
Pigment: 4.5 parts
Barium sulfate: 28 parts
The preparation method of above-mentioned coating, comprising the following steps:
Step 1, it is pre-mixed, appeal formula is put into agitator tank according to resin-pigments and fillers-auxiliary agent-resin sequence
In, it is thoroughly mixed.
Step 2, mixture step 1 obtained squeezes out, and extrusion process uses 60 extruder of Sheng Shida, 1st area of extruder
Temperature is 90 DEG C, and 2 area's temperature are 95 DEG C, and 3 area's temperature are 105 DEG C, and 4 area's temperature are 100 DEG C, and lower head piece temperature of charge control exists
Between 120~125 DEG C, screw speed 45HZ, screw(-type) feeder revolving speed 20HZ keep the abundant melting mixing of material uniform；
Step 3, it crushing, the product that step 2 is obtained crushes, and the crushing process uses 05 grinding machine of Sheng Shida,
Pulverizer: main mill is set in 48HZ, and pair mill is set in 22HZ, and pressure feeding spiral conveyer is set in 18HZ, air inlet wind chill temperatures
No more than 10 DEG C, smashed product is sieved using 180 mesh antistatic sieves, and fine powder enters dust by rotating separation
Bucket, only sieve obtains uniform particle sizes and charges good powder to be that product powder applies coarse powder into coarse powder recycling bins under sieve
Material, D10 are not less than 12 μm, and D50=34 ± 1 μm, D90 is not more than 61 μm, and powder temperature is not more than 30 DEG C.
The contrast effect of Examples 1 and 2 and the coating of original formula production after coating is shown in Table 1
Table 1
The powdery paints of Examples 1 and 2 method production, has surface of the paint film good, and higher levelability and bright property are satisfied
Full exquisiteness, fresh and clean feature completely solve in the market under different process and baking condition, highlighted to coating surface
Degree, requirement high-definition, the painting effect for the painted surface that matches in excellence or beauty under the premise of having reached environmental protection,
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (10)
1. a kind of high light transmission powdery paints, which is characterized in that constituted including following parts by weight component: polyester resin 55~60,
Curing agent 4~5, levelling agent 0.6~1.0, optical brightener 0.5~1.0, defoaming agent 0.3~0.5, wax powder 0.5~1.5, filler 25~
35, pigment 4~5；
Wherein the polyester resin is made of following methods:
Step 1: alcohol is heated to 120 DEG C and is completely melt to alcohol, with 120~180 turns of revolving speed per minute stirring, then put into acid and
Esterification catalyst is warming up to 175 DEG C, later again with the heating rate of 5 DEG C/30min to 240~250 DEG C, maintenance acid value to 8~
12mgKOH/g；The alcohol is 22%~26% neopentyl glycol, 10%~15% ethylene glycol, 30%~35%1,4- hexamethylene two
The mixture of methanol, 23%~25%1,6- hexylene glycol and 5%~8%2- ethyl -2- butyl -1,3 propylene glycol, the acid are
The mixture of 48%~55% terephthalic acid (TPA), 25%~30% M-phthalic acid and 20%~25% adipic acid, the alcohol
Dosage is sour 2~3 times of the quality, and the esterification catalyst is PC4100；
Step 2: the product investment antioxidant and acid completed to step 1 are warming up to 240 DEG C of maintenance reactions again, maintain extremely to react
Object is limpid, 43~47mgKOH/g of sampling detecting acid number, and the antioxidant is triphenyl phosphite, and the acid is 48%~55% pair
The mixture of phthalic acid, 25%~30% M-phthalic acid and 20%~25% adipic acid；
Step 3: the product after the completion of step 2 being cooled to 200~250 DEG C, is taken out with the relative degree of vacuum of -0.08~-0.1MPa
It vacuum 2~3 hours, is cooled to room temperature again later, obtains the polyester resin.
2. a kind of high light transmission powdery paints according to claim 1, which is characterized in that the polyester resin acid value is 30.0
~35.0mg KOH/g, viscosity are 0.4~0.5 200 DEG C/Pas, glass transition temperature >=55 DEG C.
3. a kind of high light transmission powdery paints according to claim 1, which is characterized in that as reactant in step 1
The mass percent of each substance in alcohol are as follows: the alcohol be 24%~26% neopentyl glycol, 12%~14% ethylene glycol, 30%~
32%1,4- cyclohexanedimethanols, 23%~25%1,6- hexylene glycol and 5%~7%2- ethyl -2- butyl -1,3 propylene glycol are made
Mass percent for each substance in the acid of reactant be 49%~52% terephthalic acid (TPA), 28%~30% M-phthalic acid,
20%~22% adipic acid.
4. a kind of high light transmission powdery paints according to claim 1, which is characterized in that the polyester resin is alkyd tree
Rouge, the curing agent are isocyanuric acid three-glycidyl ester, and the levelling agent is Voncoat R 3310 and copolymer, the increasing
Photo etching is the copolymer of butyl acrylate and methyl methacrylate, and the defoaming agent is diphenylhydroxyethanone, and the wax powder is poly-
Ethylene wax powder, the filler are barium sulfate.
5. a kind of high light transmission powdery paints according to claim 1, which is characterized in that the high light transmission powdery paints also wraps
The pigment dispersing agent of 0.5~1 parts by weight is included, the pigment dispersing agent is surfactant.
6. a kind of high light transmission powdery paints according to claim 5, which is characterized in that the surfactant is L-113
Type polymer wax.
7. a kind of high light transmission powdery paints, which is characterized in that constituted including following parts by weight component: alkyd resin 55~60,
Isocyanuric acid three-glycidyl ester 4~5, Voncoat R 3310 and copolymer 0.6~1.0, butyl acrylate and metering system
The copolymer 0.5~1.0 of sour methyl esters, diphenylhydroxyethanone 0.3~0.5, polyethylene wax powder 0.5~1.5, barium sulfate 25~35, face
Material 4~5；
Wherein the alkyd resin is made of following methods:
Step 1: alcohol is heated to 120 DEG C and is completely melt to alcohol, with 120~180 turns of revolving speed per minute stirring, then put into acid and
Esterification catalyst is warming up to 175 DEG C, later again with the heating rate of 5 DEG C/30min to 240~250 DEG C, maintenance acid value to 8~
12mgKOH/g；Alcohol, acid and the mass percent for each accounting for alcohol acid blend are as follows: the alcohol is 17.4% neopentyl glycol, 9.1%
Ethylene glycol, 20.8%1,4- cyclohexanedimethanol, 16.4%1,6- hexylene glycol and 4.6%2- ethyl -2- butyl -1,3 propylene glycol,
The acid is 15.9% terephthalic acid (TPA), 9.2% M-phthalic acid, 6.6% adipic acid, the dosage of the alcohol and the sour quality
Ratio be 2.15:1, the esterification catalyst be PC4100；
Step 2: putting into antioxidant and acid in the product completed to step 1, be warming up to 240 DEG C of maintenance reactions again, maintain to anti-
Answer object limpid, 43~47mgKOH/g of sampling detecting acid number, the antioxidant be triphenyl phosphite, acid be 50% terephthalic acid (TPA),
29% M-phthalic acid, 21% adipic acid；
Step 3: the product after the completion of step 2 is cooled to 235 DEG C, is vacuumized 2 hours with the relative degree of vacuum of -0.096MPa,
It is cooled to room temperature again later, obtains the alkyd resin.
8. a kind of preparation method of the high light transmission powdery paints according to one of right 1~7, which is characterized in that including following step
It is rapid:
Step 1, it is pre-mixed, by the polyester resin of the parts by weight, curing agent, levelling agent, optical brightener, defoaming agent, wax powder, face
Expect that dispersing agent, filler, pigment are uniformly mixed；
Step 2, mixture step 1 obtained squeezes out, and 1 area's temperature of extrusion process extruder is that 90 DEG C of ± 2,2 area's temperature are
It is 100 DEG C ± 2 that 95 DEG C of ± 2,3 area's temperature, which are 105 DEG C of ± 2,4 area's temperature, the control of lower head piece temperature of charge 120~125 DEG C it
Between, screw speed 45HZ ± 2, screw(-type) feeder revolving speed 20HZ ± 2 keep the abundant melting mixing of material uniform；
Step 3, it crushes, the product that step 2 is obtained crushes, and the crushing process pulverizer: main mill is set in 48HZ ± 2, secondary
Mill is set in 22HZ ± 2, and pressure feeding spiral conveyer is set in 18HZ ± 2, and air inlet wind chill temperatures are not more than 10 DEG C, produce after crushing
Product are sieved using sieve, and fine powder enters dust bucket by rotating separation, and only sieve sieves coarse powder into coarse powder recycling bins
Under obtain uniform particle sizes to charge good powder being product powdery paints.
9. a kind of preparation method according to claim 8, which is characterized in that the step 2, extrusion process use Sheng Shida
60 extruders, the crushing process use 05 grinding machine of Sheng Shida.
10. a kind of preparation method according to claim 8, which is characterized in that the step 3, smashed product use
180 mesh antistatic sieves are sieved, and fine powder enters dust bucket by rotating separation, and coarse powder only sieve is recycled into coarse powder
Case obtains uniform particle sizes under sieve and charges good powder to be product powdery paints, and D10 is not less than 12 μm, D50=34 ± 1 μm,
D90 is not more than 61 μm, and powder temperature is not more than 30 DEG C.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110684186A (en) * | 2019-10-12 | 2020-01-14 | 杭州金质丽科技有限公司 | Organosilicon modified fluorine-containing powder resin, preparation method and super-lubricating powder coating |
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| JP2000119561A (en) * | 1998-10-16 | 2000-04-25 | Toagosei Co Ltd | Polyester-based powdered paint composition and its production |
| CN102190786A (en) * | 2011-03-28 | 2011-09-21 | 黄山永佳三利科技有限公司 | Dull polyester resin and preparation method thereof |
| CN103724603A (en) * | 2013-12-20 | 2014-04-16 | 黄山永佳三利科技有限公司 | Polyester resin for anticorrosive powder paint and preparation method thereof |
| CN103755934A (en) * | 2013-12-21 | 2014-04-30 | 安徽神剑新材料股份有限公司 | Method for preparing polyester resin used in frostless type powder coating |
| CN107266665A (en) * | 2017-04-20 | 2017-10-20 | 浙江传化天松新材料有限公司 | A kind of TGIC solidifications high tenacity, superelevation weather-resistance powder coatings polyester resin and preparation method thereof |
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|---|---|---|---|---|
| JP2000119561A (en) * | 1998-10-16 | 2000-04-25 | Toagosei Co Ltd | Polyester-based powdered paint composition and its production |
| CN102190786A (en) * | 2011-03-28 | 2011-09-21 | 黄山永佳三利科技有限公司 | Dull polyester resin and preparation method thereof |
| CN103724603A (en) * | 2013-12-20 | 2014-04-16 | 黄山永佳三利科技有限公司 | Polyester resin for anticorrosive powder paint and preparation method thereof |
| CN103755934A (en) * | 2013-12-21 | 2014-04-30 | 安徽神剑新材料股份有限公司 | Method for preparing polyester resin used in frostless type powder coating |
| CN107266665A (en) * | 2017-04-20 | 2017-10-20 | 浙江传化天松新材料有限公司 | A kind of TGIC solidifications high tenacity, superelevation weather-resistance powder coatings polyester resin and preparation method thereof |
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| CN110684186A (en) * | 2019-10-12 | 2020-01-14 | 杭州金质丽科技有限公司 | Organosilicon modified fluorine-containing powder resin, preparation method and super-lubricating powder coating |
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