CN105273583B - A kind of aluminium dedicated weather-proof Pearlescent powder paint and preparation method thereof - Google Patents
A kind of aluminium dedicated weather-proof Pearlescent powder paint and preparation method thereof Download PDFInfo
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- CN105273583B CN105273583B CN201510756669.8A CN201510756669A CN105273583B CN 105273583 B CN105273583 B CN 105273583B CN 201510756669 A CN201510756669 A CN 201510756669A CN 105273583 B CN105273583 B CN 105273583B
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Abstract
The invention discloses a kind of aluminium dedicated weather-proof Pearlescent powder paint, by bottom powder and pearlescent pigment by weight 100:0.003 10 common bondings form, the pearlescent pigment is weather resistant pearl pigment, the aluminium dedicated weather-proof Pearlescent powder paint of the present invention have asepsis environment-protecting, with aluminium strong adhesive force, boiling water resistance, resistance to mortar and the excellent characteristics such as resistance to xenon lamp aging is good, coating has beautiful pearl shiny metal effect, and each aluminium producer can be met to performance requirements and appearance requirements such as the high adhesion forces, excellent in chemical resistance energy and good physical of special Pearlescent powder.
Description
Technical field
The present invention relates to powder coating technology field, more particularly, to a kind of aluminium dedicated weather-proof Pearlescent powder paint and
Its preparation method.
Background technology
Powdery paints has the characteristic such as energy saving, VOC free discharge performance, good decorative property, safe to use, in recent years state's inner powder
Last coating technology is quickly grown.Powdery paints is as decorative material, and plentiful with life, people are no longer limited to powder
The requirement of paint coatings single color.There is the bonding powdery paints of metal appearance, it is medium-to-high grade to be generally recognised as art of powder coatings by people
Product, by the favorable comment in construction market field, slowly promotes and comes in every field.Aluminium dedicated weather-proof pearly-lustre therein
The coating of powdery paints has excellent weatherability and glittering pearlescent appearance, by pursuing for people.Aluminium dedicated weather-proof
The current domestic aluminium dedicated weather-proof Pearlescent powder paint of pearl powder is limited by market development, powder coating formulation and work
Skill is dealt with improperly, it may appear that powder boiling pearl powder comes off, resistance to mortar is unstable and it is ageing-resistant difference the defects of, the present invention emphatically solve
Certainly in this respect the problem of.
The content of the invention
An object of the present invention is to provide a kind of aluminium dedicated weather-proof Pearlescent powder paint, which applies, tool
There are excellent water boiling resistance, resistance to mortar and ageing-resistant performance, coating generates reflective pearl shiny metal effect after its application.
The second object of the present invention is the preparation method for providing above-mentioned aluminium dedicated weather-proof Pearlescent powder paint.
First purpose of the present invention is to be achieved through the following technical solutions：A kind of aluminium dedicated weather-proof Pearlescent powder
Coating, by bottom powder and pearlescent pigment by weight 100:The common bondings of 0.003-10 form, and the pearlescent pigment is weatherability pearl
Delustering pigment.
Preferably, the bottom powder and pearlescent pigment weight ratio are 100:0.1-10.
The pearlescent pigment is coated by titanium dioxide type pearlescent pigment, selects the pearlescent pigment that particle diameter is 5-150 μm.
The bottom powder includes the component of following parts by weight：
Further improve, the bottom powder described in aluminium dedicated weather-proof Pearlescent powder paint of the present invention is by composition A and combination
Thing B is formed, wherein,
The composition A is made of the component of following parts by weight：
The composition B is made of the component of following parts by weight：
The weight ratio of the composition A and composition B are 1:1.
High acid value saturated polyester resin of the present invention, the acid number (mgKOH/g) of the polyester resin：50~60, vitrifying
Transition temperature Tg (DEG C)：65~70, viscosity (mPa.s, 200 DEG C)：7600~7900.
Low acid number saturated polyester resin of the present invention, the acid number (mgKOH/g) of the polyester resin：20~25, vitrifying
Transition temperature Tg (DEG C)：65~70, viscosity (mPa.s, 200 DEG C)：7600~7900.
The curing agent is isocyanuric acid three-glycidyl ester (TGIC), amine curing agent or beta-hydroxy alkylamide.
Auxiliary agent of the present invention is using conventional auxiliary agent, including levelling agent, styrax, ventilating agent, optical brightener, increasing electricity
One or more in agent and accelerating agent.
Filler of the present invention is one kind in titanium dioxide, barium sulfate, silicon powder, calcium carbonate, mica powder and superfine aluminium power
Or several mixture.
Pigment of the present invention uses weather-proof inorganic pigment, such as：One or more in iron oxide red, carbon black and iron oxide yellow.
Second object of the present invention is to be achieved through the following technical solutions：A kind of aluminium dedicated weather-proof Pearlescent powder
The preparation method of coating, comprises the following steps：
(1) bottom powder and pearlescent pigment are pressed 100:0.003-10 weight ratios are uniformly mixed, and are placed in bonding machines；
(2) protective gas is passed through in room temperature environment, in bonding machines and carries out heating bonding, it is 300 to set bonding machines rotating speed
~1000n/min, bonding temperature are 40-70 DEG C, and the bonding time is 3-10 minutes.
(3) after the completion of bonding, obtained powder is sieved, the special Pearlescent powder paint of material.
The protective gas is preferably nitrogen.
40-70 DEG C of the bonding temperature is resiniferous Tg temperature in powdery paints of the present invention, makes bottom powder and pearly-lustre face
Material easily combines.
Preferred 300~the 700n/min of rotating speed of bonding parameter, bonding temperature are 45-65 DEG C, bonding time setting 4~
6min, to ensure that powder bottom powder is sufficiently mixed with weather resistant pearl powder in bonding machine equipment, makes weather resistant pearl powder and bottom powder
Closely it is combined together, the pearl effect produced.
Beneficial effects of the present invention are：The aluminium dedicated weather-proof Pearlescent powder paint of the present invention solves prior art powder
Existing for last coating not water boiling resistance, intolerant to mortar and it is easy to aging the defects of, have asepsis environment-protecting, with aluminium strong adhesive force, resistance to boiling
The excellent characteristics such as water-based, resistance to mortar and resistance to xenon lamp aging are good, coating have beautiful pearl shiny metal effect, can meet each aluminium
Producer is to performance requirements and appearances such as the high adhesion forces, excellent in chemical resistance energy and good physical of special Pearlescent powder
It is required that；And preparation process is simple, it is adapted to the baking-curing at 200 DEG C, hardening time is short.
Embodiment
With reference to specific embodiment, the present invention is further elaborated.
In the following embodiments of the present invention,
Saturated polyester resin：NH3307, the production of Guangzhou Qing Tian Resins Corporations；
SJ4E, Anhui Shenjian New Material Co., Ltd.'s production.
High acid value saturated polyester resin：NH8081, the production of Guangzhou Qing Tian Resins Corporations.
Low acid number saturated polyester resin：NH8588, the production of Guangzhou Qing Tian Resins Corporations.
Bonding machines：Using German HENSCHEL companies MB350 models bonding unit.
Weather resistant pearl pigment：It is the weatherability of 5-150 μm of particle diameter specifically for the pearlescent pigment of rutile-type cladding
Pearlescent pigment, using Shanghai Mei Ze chemical companies M/BS111, M/BS6153, M/BS103, M/BS111 etc..
Embodiment 1
A kind of aluminium dedicated weather-proof Pearlescent powder paint, by bottom powder and weather resistant pearl pigment by weight 100:1 is common
Formed with bonding, the bottom powder includes the component of following parts by weight：
Preparation method：
1st, bottom powder is prepared：
(a) saturated polyester resin, curing agent TGIC, titanium dioxide are weighed by above-mentioned weight ratio, barium sulfate, levelling agent,
Styrax, other auxiliary agents and pigment are placed in compounding jar, are sufficiently mixed and crush 1~10 minute；
(b) material after crushing is extruded into double screw extruder；Extruder heating and temperature control is at 80~120 DEG C；
(c) it is 30~45um's that material after extrusion is ground into particle diameter (equivalent grain size D50) through tabletting, cooling, pulverizer
Powder, up to the bottom powder of aluminium dedicated weather-proof Pearlescent powder paint after then sieving.
2nd, bottom powder and weather resistant pearl pigment bonding：
(1) bottom powder and weather resistant pearl pigment (Shanghai Mei Ze chemical company M/BS103) are pre-mixed, part by weight is
100:1, added after mixing in bonding machines；
(2) protective gas is passed through in room temperature environment, in bonding machines and carries out heating bonding.Bonding temperature setting 45-65 degree,
Bonding machines revolution is set：Heat up revolution 500n/min, bonding rotating speed 400n/min, and discharge rotating speed 300n/min, and the bonding time sets
Put 5min.
(3) after the completion of bonding, the sieving of gained powder, obtains aluminium dedicated weather-proof Pearlescent powder paint.
Coating process：Aluminium dedicated weather-proof Pearlescent powder paint is taken out, plate is sprayed with electrostatic gun, in 200 DEG C of baking ovens
10min is toasted up to the good weather-resistance powder coatings coating of pearl effect, properties detection is carried out to coating, detection result is such as
Following table：
Embodiment 2
A kind of aluminium dedicated weather-proof Pearlescent powder paint, by bottom powder and weather resistant pearl pigment by weight 100:3 is common
Formed with bonding, the bottom powder includes the component of following parts by weight：
Preparation method：
1st, bottom powder is prepared：
(a) saturated polyester resin, curing agent TGIC, titanium dioxide are weighed by above-mentioned weight ratio, barium sulfate, levelling agent,
Styrax, other auxiliary agents and pigment are placed in compounding jar, are sufficiently mixed and crush 1~10 minute；
(b) material after crushing is extruded into double screw extruder；Extruder heating and temperature control is at 80~120 DEG C；
(c) it is 30~45um's that material after extrusion is ground into particle diameter (equivalent grain size D50) through tabletting, cooling, pulverizer
Powder, up to the bottom powder of aluminium dedicated weather-proof Pearlescent powder paint after then sieving.
2nd, bottom powder and weather resistant pearl pigment bonding：
(1) bottom powder and weather resistant pearl pigment (Shanghai Mei Ze chemical company M/BS103) are pre-mixed, part by weight is
100:3, added after mixing in bonding machines；
(2) protective gas is passed through in room temperature environment, in bonding machines and carries out heating bonding, bonding temperature setting 45-65 degree,
Bonding machines revolution is set：Heat up revolution 300n/min, bonding rotating speed 450n/min, and discharge rotating speed 300n/min, and the bonding time sets
Put 5min.
(3) after the completion of bonding, the sieving of gained powder, obtains aluminium dedicated weather-proof Pearlescent powder paint.
Coating process：Aluminium dedicated weather-proof Pearlescent powder paint is taken out, plate is sprayed with electrostatic gun, in 200 DEG C of baking ovens
10min is toasted up to the good weather-resistance powder coatings coating of pearl effect, properties detection is carried out to coating, detection result is such as
Following table：
Embodiment 3
A kind of aluminium dedicated weather-proof Pearlescent powder paint, by bottom powder and weather resistant pearl pigment by weight 100:1 is common
Being formed with bonding, the bottom powder is made of composition A and composition B,
The components of the composition B containing following parts by weight：
The components of the composition B containing following parts by weight：
Preparation method：
1st, bottom powder is prepared：
(a) ratio weighs composition A and composition B respectively by weight, is respectively placed in compounding jar, is sufficiently mixed and crushes
1~10 minute；
(b) material after composition A and composition B is crushed respectively enters double screw extruder extrusion；Extruder heating temperature
Degree control is at 80~120 DEG C；
(c) composition A materials and composition B material after extrusion is respectively through tabletting, cooling, broken, then respectively enter powder
Broken machine is ground into the powder that particle diameter (equivalent grain size D50) is 30~45um, and 1 is pressed after then sieving：1 weight ratio is uniformly mixed, i.e.,
Obtain bottom powder.
2nd, bottom powder and weather resistant pearl pigment bonding：
(1) bottom powder and weather resistant pearl pigment (Shanghai Mei Ze chemical company M/BS6153) are pre-mixed, weight ratio is
100:1, added after mixing in bonding machines；
(2) protective gas is passed through in room temperature environment, in bonding machines and carries out heating bonding, bonding temperature setting 45-65 degree,
Bonding machines revolution is set：Heat up revolution 300n/min, bonding rotating speed 450n/min, and discharge rotating speed 300n/min, and the bonding time sets
Put 5min.
(3) after the completion of bonding, the sieving of gained powder, obtains aluminium dedicated weather-proof Pearlescent powder paint.
Coating process：Aluminium dedicated weather-proof Pearlescent powder paint is taken out, plate is sprayed with electrostatic gun, in 200 DEG C of baking ovens
10min is toasted up to the good weather-resistance powder coatings coating of pearl effect, properties detection is carried out to coating, detection result is such as
Following table：
Embodiment 4
A kind of aluminium dedicated weather-proof Pearlescent powder paint, by bottom powder and weather resistant pearl pigment by weight 100:3 is common
Being formed with bonding, the bottom powder is made of composition A and composition B,
The components of the composition B containing following parts by weight：
The components of the composition B containing following parts by weight：
Preparation method：
1st, bottom powder is prepared：
(a) ratio weighs composition A and composition B respectively by weight, is respectively placed in compounding jar, is sufficiently mixed and crushes
1~10 minute；
(b) material after composition A and composition B is crushed respectively enters double screw extruder extrusion；Extruder heating temperature
Degree control is at 80~120 DEG C；
(c) composition A materials and composition B material after extrusion is respectively through tabletting, cooling, broken, then respectively enter powder
Broken machine is ground into the powder that particle diameter (equivalent grain size D50) is 30~45um, and 1 is pressed after then sieving：1 weight ratio is uniformly mixed, i.e.,
Obtain bottom powder.
3rd, bottom powder and weather resistant pearl pigment bonding：
(1) bottom powder and weather resistant pearl pigment (Shanghai Mei Ze chemical company M/BS6153) are pre-mixed, weight ratio is
100:3, added after mixing in bonding machines；
(2) protective gas is passed through in room temperature environment, in bonding machines and carries out heating bonding, bonding temperature setting 45-65 degree,
Bonding machines revolution is set：Heat up revolution 300n/min, bonding rotating speed 450n/min, and discharge rotating speed 300n/min, and the bonding time sets
Put 5min.
(3) after the completion of bonding, the sieving of gained powder, obtains aluminium dedicated weather-proof Pearlescent powder paint.
Coating process：Aluminium dedicated weather-proof Pearlescent powder paint is taken out, plate is sprayed with electrostatic gun, in 200 DEG C of baking ovens
10min is toasted up to the good weather-resistance powder coatings coating of pearl effect, properties detection is carried out to coating, detection result is such as
Following table：
In above-described embodiment 1 to 4, silver powder that weather resistant pearl pigment uses, can also use the other resistance to of different company
Time property pearlescent pigment, the mixture of one or more can be added in experiment, to obtain the special pearl of aluminium with different-effect
Light effect.
The above, is only presently preferred embodiments of the present invention, is not intended to limit the invention, every skill according to the present invention
Any trickle amendment, equivalent substitution and the improvement that art substantially makees above example, should be included in technical solution of the present invention
Protection domain in.
Claims (4)
1. a kind of aluminium dedicated weather-proof Pearlescent powder paint, it is characterised in that by bottom powder and pearlescent pigment by weight 100:
The common bondings of 0.003-10 form；
The pearlescent pigment is coated by titanium dioxide type pearlescent pigment, selects the pearlescent pigment that particle diameter is 5-150 μm；
The bottom powder is made of composition A and composition B, wherein,
The composition A is made of the component of following parts by weight：
The composition B is made of the component of following parts by weight：
Composition A and composition the B weight ratio is 1:1；
The high acid value saturated polyester resin acid number is 50~60mgKOH/g, and the viscosity at 200 DEG C is 7600~7900mPa
s；
The low acid number saturated polyester resin acid number is 20~25mgKOH/g, and the viscosity at 200 DEG C is 7600~7900mPa
s。
A kind of 2. preparation method of aluminium dedicated weather-proof Pearlescent powder paint as claimed in claim 1, it is characterised in that bag
Include following steps：
(1) bottom powder and pearlescent pigment are pressed 100:0.003-10 weight ratios are uniformly mixed, and are placed in binding machine；
(2) protective gas is passed through in room temperature environment, in bonding machines and carries out heating bonding, set bonding machines rotating speed for 300~
1000n/min, bonding temperature are 40-70 DEG C, and the bonding time is 3-10 minutes；
(3) after the completion of bonding, obtained powder is sieved, up to the special Pearlescent powder paint of aluminium.
3. the preparation method of aluminium dedicated weather-proof Pearlescent powder paint according to claim 2, it is characterised in that described
Protective gas is nitrogen.
4. the preparation method of aluminium dedicated weather-proof Pearlescent powder paint according to claim 2, it is characterised in that described
Bonding machines rotating speed is 300~700n/min, and bonding temperature is 45-65 DEG C, and the bonding time sets 4~6min.
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| CN109181400B (en) * | 2018-07-20 | 2021-09-17 | 天津西敦粉漆科技有限公司 | Microwave heating binding method for powder coating and pigment |
| CN109233582A (en) * | 2018-08-29 | 2019-01-18 | 佛山市三水固丽雅五金装饰材料有限公司 | Multi-functional pure polyester TGIC powdery paints of one kind and preparation method thereof |
| CN109943126A (en) * | 2019-04-11 | 2019-06-28 | 德汇新材料科技南通有限公司 | Bonding method, the preparation method of coating, coating and the application of metallic powdery pigment |
| CN112724804A (en) * | 2020-12-29 | 2021-04-30 | 老虎表面技术新材料（清远）有限公司 | Powder coating composition with color changing effect and coating thereof |
| CN114276740A (en) * | 2021-11-22 | 2022-04-05 | 科浦勒塑料粉末(佛山)有限公司 | Weather-resistant light energy storage metal powder coating and preparation method thereof |
| CN114316752B (en) * | 2021-12-23 | 2023-05-05 | 老虎表面技术新材料（清远）有限公司 | Powder coating composition with stable pearlescent texture, preparation method and coating thereof |
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Address after: No.5 Lisha East Road, Shatian Town, Dongguan City, Guangdong Province 523000 Patentee after: Qingtian Material Technology Co., Ltd Address before: Shiling Town, Huadu District, Guangzhou City, Guangdong province 510000 Yufeng Road No. 16 Building 1 Patentee before: GUANGZHOU KINTE INDUSTRIAL Co.,Ltd. |