CN111253838A - Powder coating with good wear resistance and impact resistance and preparation method thereof - Google Patents
Powder coating with good wear resistance and impact resistance and preparation method thereof Download PDFInfo
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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
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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
- 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
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- C08K3/22—Oxides; Hydroxides of metals
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- C08K2003/2241—Titanium dioxide
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Abstract
The invention discloses a powder coating with good wear resistance and impact resistance and a preparation method thereof, relating to the field of powder coatings; in order to enhance the spraying effect; the raw materials comprise: 720-770 parts of 9090 polyester resin, 18-22 parts of TGIC curing agent, 170-230 parts of PL668 leveling agent, 17-21 parts of R-996 titanium dioxide, 7-9 parts of 2542 red and 0.5-1.5 parts of graining agent; the preparation method comprises the following steps: preparing raw materials; 9090 polyester resin, TGIC curing agent, PL668 leveling agent, R-996 titanium dioxide, 2542 red, sand grain agent, P-600 calcium aluminate, iron red, L-528 electrifier and F5RK scarlet are weighed according to the weight portion. According to the invention, the sand grain agent is added into the raw material composition, so that the surface of the sprayed coating has good hand feeling and visual stereoscopic impression, and the sprayed coating can weaken reflection and has good matte property.
Description
Technical Field
The invention relates to the technical field of powder coatings, in particular to a powder coating with good wear resistance and impact resistance and a preparation method thereof.
Background
The powder coating is a solid powder synthetic resin coating which is completely different from general coatings in form, consists of solid resin, pigment, filler, auxiliary agent and the like, has the characteristics of no organic solvent, stable storage, convenient transportation, good physical and mechanical properties of a coating and the like, and is widely used by people.
Through retrieval, the Chinese patent application No. CN201310205459.0 discloses a powder coating for an automobile finish and a preparation method thereof, wherein the powder coating comprises, by weight, 3% -5% of hydroxyl acrylic resin, 0.8% -2% of epoxy resin, 12.5% -14.5% of polyether ester, 45% -50% of polyester resin, 0.3% -0.6% of dibutyltin dilaurate, 0.4% -0.6% of benzoin, 2% -2.2% of a flatting agent, 22.5% -25.5% of titanium dioxide and 8% -12% of Epsilon-caprolactam sealed isophorone diisocyanate.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a powder coating with good wear resistance and impact resistance and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the powder coating with good wear resistance and impact resistance comprises the following raw materials: 720-770 parts of 9090 polyester resin, 18-22 parts of TGIC curing agent, 170-230 parts of PL668 leveling agent, 17-21 parts of R-996 titanium dioxide, 7-9 parts of 2542 red, 0.5-1.5 parts of sand streak agent, 20-40 parts of P-600 calcium aluminate, 1.5-2 parts of iron red, 2.5-3.5 parts of L-528 electrifier and 8-10 parts of F5RK scarlet.
Preferably: the raw materials comprise: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 0.5 part of sand streak agent, 20 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
Preferably: the raw materials comprise: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 1.5 parts of sand streak agent, 40 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
Preferably: the raw materials comprise: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 1 part of graining agent, 30 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
A preparation method of a powder coating with good wear resistance and impact resistance sequentially comprises the following steps:
s1: preparing raw materials; 9090 polyester resin, TGIC curing agent, PL668 leveling agent, R-996 titanium dioxide, 2542 red, sand grain agent, P-600 calcium aluminate, iron red, L-528 electrizer and F5RK scarlet are weighed according to the weight parts;
s2: premixing; placing the prepared raw materials in a vertical mixing tank device, and stirring to fully and uniformly mix the raw materials;
s3: melt extrusion; feeding the mixture obtained in the step S2 into a double-screw mixing extruder for extrusion;
s4: cooling and crushing; rapidly cooling the melt discharged from the extruder by a tabletting machine with ice water cooling and pressing the melt into sheets, and crushing the sheets into fragments by a crusher to obtain coating fragments;
s5: grinding and mixing; putting the paint fragments into a grinder for grinding to finally form particles of 35-55 um; then mixing through a high-speed mixing device;
s6: sieving and packaging; and (4) screening the crushed particles through a 180-mesh sieve, detecting, packaging and warehousing after the detection is qualified.
Preferably: the stirring time of the vertical mixing tank equipment is 12 min.
Preferably: the temperature of the first zone of the double-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the rotating speed of the screw is 35r/s, and the feeding speed is 20 r/s; the tabletting speed is 20 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1200 revolutions and the motor power of 380V, 36A and 18.5 KW.
Preferably: the temperature of the first zone of the double-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the rotating speed of the screw is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1300 revolutions and the motor power of 380V, 36A and 18.5 KW.
Preferably: the temperature of the first zone of the double-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the rotating speed of the screw is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1400 revolutions and the motor power of 380V, 36A and 18.5 KW.
Preferably: the temperature of the first zone of the double-screw mixing extruder is controlled at 90 ℃, the temperature of the second zone is controlled at 100 ℃, the rotating speed of the screw is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 45 ℃, the rotating speed of 1500 revolutions and the motor power of 380V, 36A and 18.5 KW.
The invention has the beneficial effects that:
1. by adding the sand grain agent into the raw material composition, the surface of the sprayed coating has good hand feeling and visual stereoscopic impression, can weaken reflection of light, has good matte property, and enhances the spraying effect.
2. By adding P600 calcium aluminate into the raw material composition, the sprayed coating has good physical and mechanical properties due to the physical properties of high hardness and high melting point, and the wear resistance and the pressure resistance are improved.
3. By adding the L-528 electrifier into the raw materials, the charges on the surface of the workpiece can be leaked out in time during powder spraying, so that the electrostatic shielding effect is overcome, the powder is easily applied to the inner surface of the workpiece, and the powder application rate is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the attached tables in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1:
the powder coating with good wear resistance and impact resistance comprises the following raw materials: 720-770 parts of 9090 polyester resin, 18-22 parts of TGIC curing agent, 170-230 parts of PL668 leveling agent, 17-21 parts of R-996 titanium dioxide, 7-9 parts of 2542 red, 0.5-1.5 parts of sand streak agent, 20-40 parts of P-600 calcium aluminate, 1.5-2 parts of iron red, 2.5-3.5 parts of L-528 electrifier and 8-10 parts of F5RK scarlet.
A preparation method of a powder coating with good wear resistance and impact resistance sequentially comprises the following steps:
s1: preparing raw materials; 9090 polyester resin, TGIC curing agent, PL668 leveling agent, R-996 titanium dioxide, 2542 red, sand grain agent, P-600 calcium aluminate, iron red, L-528 electrizer and F5RK scarlet are weighed according to the weight parts;
s2: premixing; placing the prepared raw materials in a vertical mixing tank device, and stirring to fully and uniformly mix the raw materials;
s3: melt extrusion; feeding the mixture obtained in the step S2 into a double-screw mixing extruder for extrusion;
s4: cooling and crushing; rapidly cooling the melt discharged from the extruder by a tabletting machine with ice water cooling and pressing the melt into sheets, and crushing the sheets into fragments by a crusher to obtain coating fragments;
s5: grinding and mixing; putting the paint fragments into a grinder for grinding to finally form particles of 35-55 um; then mixing through a high-speed mixing device;
s6: sieving and packaging; and (4) screening the crushed particles through a 180-mesh sieve, detecting, packaging and warehousing after the detection is qualified.
Wherein, the stirring time of the vertical mixing tank equipment is 12 min.
Wherein the temperature of the first zone of the double-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the rotating speed of the screw is 35r/s, and the feeding speed is 20 r/s; the tabletting speed is 20 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1200 revolutions and the motor power of 380V, 36A and 18.5 KW.
Example 2:
the powder coating with good wear resistance and impact resistance comprises the following raw materials: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 0.5 part of sand streak agent, 20 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
A preparation method of a powder coating with good wear resistance and impact resistance sequentially comprises the following steps:
s1: preparing raw materials; 9090 polyester resin, TGIC curing agent, PL668 leveling agent, R-996 titanium dioxide, 2542 red, sand grain agent, P-600 calcium aluminate, iron red, L-528 electrizer and F5RK scarlet are weighed according to the weight parts;
s2: premixing; placing the prepared raw materials in a vertical mixing tank device, and stirring to fully and uniformly mix the raw materials;
s3: melt extrusion; feeding the mixture obtained in the step S2 into a double-screw mixing extruder for extrusion;
s4: cooling and crushing; rapidly cooling the melt discharged from the extruder by a tabletting machine with ice water cooling and pressing the melt into sheets, and crushing the sheets into fragments by a crusher to obtain coating fragments;
s5: grinding and mixing; putting the paint fragments into a grinder for grinding to finally form particles of 35-55 um; then mixing through a high-speed mixing device;
s6: sieving and packaging; and (4) screening the crushed particles through a 180-mesh sieve, detecting, packaging and warehousing after the detection is qualified.
Wherein, the stirring time of the vertical mixing tank equipment is 12 min.
Wherein the temperature of the first zone of the double-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the rotating speed of the screw is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1300 revolutions and the motor power of 380V, 36A and 18.5 KW.
Example 3:
the powder coating with good wear resistance and impact resistance comprises the following raw materials: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 1.5 parts of sand streak agent, 40 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
A preparation method of a powder coating with good wear resistance and impact resistance sequentially comprises the following steps:
s1: preparing raw materials; 9090 polyester resin, TGIC curing agent, PL668 leveling agent, R-996 titanium dioxide, 2542 red, sand grain agent, P-600 calcium aluminate, iron red, L-528 electrizer and F5RK scarlet are weighed according to the weight parts;
s2: premixing; placing the prepared raw materials in a vertical mixing tank device, and stirring to fully and uniformly mix the raw materials;
s3: melt extrusion; feeding the mixture obtained in the step S2 into a double-screw mixing extruder for extrusion;
s4: cooling and crushing; rapidly cooling the melt discharged from the extruder by a tabletting machine with ice water cooling and pressing the melt into sheets, and crushing the sheets into fragments by a crusher to obtain coating fragments;
s5: grinding and mixing; putting the paint fragments into a grinder for grinding to finally form particles of 35-55 um; then mixing through a high-speed mixing device;
s6: sieving and packaging; and (4) screening the crushed particles through a 180-mesh sieve, detecting, packaging and warehousing after the detection is qualified.
Wherein, the stirring time of the vertical mixing tank equipment is 12 min.
Wherein the temperature of the first zone of the double-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the rotating speed of the screw is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1400 revolutions and the motor power of 380V, 36A and 18.5 KW.
Example 4:
the powder coating with good wear resistance and impact resistance comprises the following raw materials: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 1 part of graining agent, 30 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
A preparation method of a powder coating with good wear resistance and impact resistance sequentially comprises the following steps:
s1: preparing raw materials; 9090 polyester resin, TGIC curing agent, PL668 leveling agent, R-996 titanium dioxide, 2542 red, sand grain agent, P-600 calcium aluminate, iron red, L-528 electrizer and F5RK scarlet are weighed according to the weight parts;
s2: premixing; placing the prepared raw materials in a vertical mixing tank device, and stirring to fully and uniformly mix the raw materials;
s3: melt extrusion; feeding the mixture obtained in the step S2 into a double-screw mixing extruder for extrusion;
s4: cooling and crushing; rapidly cooling the melt discharged from the extruder by a tabletting machine with ice water cooling and pressing the melt into sheets, and crushing the sheets into fragments by a crusher to obtain coating fragments;
s5: grinding and mixing; putting the paint fragments into a grinder for grinding to finally form particles of 35-55 um; then mixing through a high-speed mixing device;
s6: sieving and packaging; and (4) screening the crushed particles through a 180-mesh sieve, detecting, packaging and warehousing after the detection is qualified.
Wherein, the stirring time of the vertical mixing tank equipment is 12 min.
Wherein the temperature of the first zone of the double-screw mixing extruder is controlled at 90 ℃, the temperature of the second zone is controlled at 100 ℃, the rotating speed of the screw is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 45 ℃, the rotating speed of 1500 revolutions and the motor power of 380V, 36A and 18.5 KW.
TABLE 1
TABLE 2
TABLE 3
TABLE 4
TABLE 5
| Effects of use | Impact strength | Hardness of |
| Example 1 | 45～48kg·cm（GB/T1732-93） | ≥2.3H（GB/T6739-86） |
| Example 2 | 45kg·cm（GB/T1732-93） | ≥2.3H（GB/T6739-86） |
| Example 3 | 48kg·cm（GB/T1732-93） | ≥2.5H（GB/T6739-86） |
| Example 4 | 48kg·cm（GB/T1732-93） | ≥2.5H（GB/T6739-86） |
As can be seen from the data shown in tables 1 to 5, the amount of the calcium P600 aluminate according to the present invention at 2.88% is relatively excellent in impact resistance and hardness of the powder coating while securing flexibility; when the dosage of the P600 calcium aluminate exceeds 2.88 percent, the compression resistance and the wear resistance of the powder coating are hardly improved; therefore, the effective dosage of the P600 calcium aluminate is preferably 2.88%, and the effective dosage of the graining agent is preferably 0.1% in order to ensure the texture.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The powder coating with good wear resistance and impact resistance is characterized by comprising the following raw materials: 720-770 parts of 9090 polyester resin, 18-22 parts of TGIC curing agent, 170-230 parts of PL668 leveling agent, 17-21 parts of R-996 titanium dioxide, 7-9 parts of 2542 red, 0.5-1.5 parts of sand streak agent, 20-40 parts of P-600 calcium aluminate, 1.5-2 parts of iron red, 2.5-3.5 parts of L-528 electrifier and 8-10 parts of F5RK scarlet.
2. The abrasion and impact resistant powder coating of claim 1, wherein said raw material composition comprises: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 0.5 part of sand streak agent, 20 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
3. The abrasion and impact resistant powder coating of claim 1, wherein said raw material composition comprises: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 1.5 parts of sand streak agent, 40 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
4. The abrasion and impact resistant powder coating of claim 1, wherein said raw material composition comprises: 750 parts of 9090 polyester resin, 20 parts of TGIC curing agent, 200 parts of PL668 leveling agent, 19 parts of R-996 titanium dioxide, 8 parts of 2542 red, 1 part of graining agent, 30 parts of P-600 calcium aluminate, 1.7 parts of iron red, 3 parts of L-528 electrifying agent and 9 parts of F5RK scarlet.
5. A preparation method of a powder coating with good wear resistance and impact resistance sequentially comprises the following steps:
s1: preparing raw materials; 9090 polyester resin, TGIC curing agent, PL668 leveling agent, R-996 titanium dioxide, 2542 red, sand grain agent, P-600 calcium aluminate, iron red, L-528 electrizer and F5RK scarlet are weighed according to the weight parts;
s2: premixing; placing the prepared raw materials in a vertical mixing tank device, and stirring to fully and uniformly mix the raw materials;
s3: melt extrusion; feeding the mixture obtained in the step S2 into a double-screw mixing extruder for extrusion;
s4: cooling and crushing; rapidly cooling the melt discharged from the extruder by a tabletting machine with ice water cooling and pressing the melt into sheets, and crushing the sheets into fragments by a crusher to obtain coating fragments;
s5: grinding and mixing; putting the paint fragments into a grinder for grinding to finally form particles of 35-55 um; then mixing through a high-speed mixing device;
s6: sieving and packaging; and (4) screening the crushed particles through a 180-mesh sieve, detecting, packaging and warehousing after the detection is qualified.
6. The method for preparing a powder coating with good abrasion resistance and impact resistance according to claim 5, wherein the stirring time of the vertical mixing tank device is 12 min.
7. The method for preparing the powder coating with good abrasion resistance and impact resistance as claimed in claim 6, wherein the temperature of the first zone of the twin-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the rotating speed of the screw is 35r/s, and the feeding speed is 20 r/s; the tabletting speed is 20 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1200 revolutions and the motor power of 380V, 36A and 18.5 KW.
8. The method for preparing the powder coating with good abrasion resistance and impact resistance as claimed in claim 6, wherein the temperature of the first zone of the twin-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the screw rotating speed is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1300 revolutions and the motor power of 380V, 36A and 18.5 KW.
9. The method for preparing the powder coating with good abrasion resistance and impact resistance as claimed in claim 6, wherein the temperature of the first zone of the twin-screw mixing extruder is controlled at 80 ℃, the temperature of the second zone is controlled at 90 ℃, the screw rotating speed is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 40 ℃, the rotating speed of 1400 revolutions and the motor power of 380V, 36A and 18.5 KW.
10. The method for preparing the powder coating with good abrasion resistance and impact resistance as claimed in claim 6, wherein the temperature of the first zone of the twin-screw mixing extruder is controlled at 90 ℃, the temperature of the second zone is controlled at 100 ℃, the screw rotating speed is 40r/s, and the feeding speed is 20 r/s; the tabletting speed is 25 r/s; the high-speed mixing device is a high-speed mixer with a model number GHT-50, and the mixing conditions are that the mixing is carried out at the temperature of 45 ℃, the rotating speed of 1500 revolutions and the motor power of 380V, 36A and 18.5 KW.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115232446A (en) * | 2022-07-18 | 2022-10-25 | 绍兴市英纳粉末涂料有限公司 | High-temperature-resistant plastic powder for kitchen appliances and production process thereof |
| CN116875155A (en) * | 2023-08-01 | 2023-10-13 | 湖北来斯涂塑新材料有限公司 | Preparation method and application of fluorine-free texture additive for powder coating |
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