CN114851516A - Powder coating and preparation process thereof - Google Patents
Powder coating and preparation process thereof Download PDFInfo
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- CN114851516A CN114851516A CN202210635994.9A CN202210635994A CN114851516A CN 114851516 A CN114851516 A CN 114851516A CN 202210635994 A CN202210635994 A CN 202210635994A CN 114851516 A CN114851516 A CN 114851516A
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- Prior art keywords
- powder coating
- raw materials
- auxiliary
- agent
- cover body
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- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 239000011248 coating agent Substances 0.000 title claims abstract description 35
- 239000000843 powder Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 6
- 239000003755 preservative agent Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 4
- 239000000049 pigment Substances 0.000 claims abstract description 4
- 230000002335 preservative effect Effects 0.000 claims abstract description 4
- 239000004698 Polyethylene Substances 0.000 claims abstract description 3
- 239000004743 Polypropylene Substances 0.000 claims abstract description 3
- 229920000573 polyethylene Polymers 0.000 claims abstract description 3
- 229920001155 polypropylene Polymers 0.000 claims abstract description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002671 adjuvant Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Food Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a powder coating, which comprises a raw material, an auxiliary material and an auxiliary agent, wherein the raw material is thermoplastic resin, the thermoplastic resin is any one of PE-polyethylene, PP-polypropylene or PVC-polyvinyl chloride, the auxiliary material comprises pigment and filler, the auxiliary agent comprises a curing agent, a leveling agent, a preservative, an antifreezing agent and a dispersing agent, and the raw material, the auxiliary material and the auxiliary agent are mixed according to a ratio of 1: 0.9: 1 to prepare the powder coating through melt mixing processing. In the cooling link in the powder coating preparation process, the cooling mode of air cooling equipment is adopted, the cover body with the fan is additionally arranged on the transmission device, the transmission speed of the transmission device is only required to be adjusted in the cooling process, and the powder coating in the transmission process is cooled, so that the movable cooling effect is realized.
Description
Technical Field
The invention relates to the technical field of powder coatings, in particular to a powder coating and a preparation process thereof.
Background
The powder coating is a solid powder synthetic resin coating composed of solid resin, pigment, filler and auxiliary agent, the powder coating is completely different from general coating, it is in the state of fine powder, because it does not use solvent, so it is called powder coating, the main characteristics of the powder coating are: has the characteristics of harmlessness, high efficiency, resource saving and environmental protection.
In the traditional cooling grinding of powder coating processing, the cooling mode is mainly a natural cooling mode, and after cooling is finished, the flaky coating is crushed by a crusher, so that the mode of crushing after cooling is caused, and certain influence is inevitably caused on the whole coating preparation process.
Disclosure of Invention
The invention aims to provide a powder coating and a preparation process thereof, which aim to solve the problem that the preparation process of the whole coating is influenced by the form of cooling and then crushing in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the powder coating comprises a raw material, an auxiliary material and an auxiliary agent, wherein the raw material is thermoplastic resin, the thermoplastic resin is any one of PE-polyethylene, PP-polypropylene or PVC-polyvinyl chloride, the auxiliary material comprises pigment and filler, the auxiliary agent comprises a curing agent, a leveling agent, a preservative, an antifreezing agent and a dispersing agent, and the raw material, the auxiliary material and the auxiliary agent are mixed according to a ratio of 1: 0.9: 1 to prepare the powder coating through melt mixing processing.
The specific preparation method of the powder coating comprises the following steps:
s1, material selection: selecting raw materials and auxiliary materials of corresponding components according to the component proportion, and putting the raw materials and the auxiliary materials into a stirring kettle;
s2, premixing: stirring and mixing the raw materials and the auxiliary materials until the raw materials and the auxiliary materials are uniformly stirred, adding the auxiliary agents (the curing agent, the flatting agent, the preservative and the antifreezing agent), and stirring for the second time;
s3, melt extrusion: discharging the mixture into a heating kettle after mixing, adding a dispersing agent for heating treatment, and discharging the mixture through an extruder after the heating treatment is finished;
s4, grinding and screening: and grinding the material body into thin sheets by a grinding machine after discharging, matching with a transmission device to transmit the material body into a grinder to grind after cooling, and performing coarse and fine screening by a vibrating screen after grinding.
In S2, the mixing time of the raw materials and the auxiliary materials is 20min to 30min, and the stirring speed is 400r/min to 600 r/min.
In S2, the time of the secondary stirring is 15min to 20min, and the stirring speed is 400r/min to 600 r/min.
In S4, the cooling mode adopts air cooling equipment, air cooling equipment includes the cover body, fan and driving motor, the cover body nests on transmission equipment, and fan transverse distribution is in one side of the cover body, the cover body opposite side is equipped with the thermovent, connect through the drive belt between the fan, the fan and the driving motor of cover body one end are connected.
In S3, the mixing and heating time is 40-50 min, and the heating temperature is 180-230 ℃.
Compared with the prior art, the invention has the beneficial effects that:
in the cooling link in the powder coating preparation process, the cooling mode of air cooling equipment is adopted, the cover body with the fan is additionally arranged on the transmission device, the transmission speed of the transmission device is only required to be adjusted in the cooling process, and the powder coating in the transmission process is cooled, so that the movable cooling effect is realized.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, the present invention provides a technical solution:
a powder coating and its preparation method, choose 10 raw materials, 9 adjuvants and 10 auxiliaries of the corresponding component, put into stirred tank, stir raw materials and adjuvants for 20min under the condition of 550r/min, until stir, add adjuvants, stir 18min under the condition of 450r/min secondarily, after mixing, the discharge is to heating kettle, add dispersant and regulate to the temperature to 220 duC and heat for 45min, after the heat treatment is finished, discharge through the extruder, grind the material body into lamellar by the mill after the discharge, after cooling, cooperate with the drive unit to transmit the material body to the pulverizer to pulverize, carry on the coarse and fine screening with the help of the vibrating screen;
wherein, cooling system adopts forced air cooling equipment, forced air cooling equipment is including the cover body, fan and driving motor, the cover body nestification is on transmission equipment, and fan transverse distribution is in one side of the cover body, the cover body opposite side is equipped with the thermovent, connect through the drive belt between the fan, the fan and the driving motor of cover body one end are connected.
Example two
A powder coating and its preparation method, choose 10 raw materials, 9 adjuvants and 10 auxiliaries of the corresponding component, put into stirred tank, stir raw materials and adjuvants for 20min under the condition of 550r/min, until stir, add adjuvants, stir 18min under the condition of 450r/min secondarily, after mixing, the discharge is to heating kettle, add dispersant and regulate to the temperature to 220 duC and heat for 45min, after the heat treatment is finished, discharge through the extruder, grind the material body into lamellar by the mill after the discharge, after cooling, cooperate with the drive unit to transmit the material body to the pulverizer to pulverize, carry on the coarse and fine screening with the help of the vibrating screen;
wherein, the cooling mode adopts a natural cooling mode.
EXAMPLE III
A powder coating and its preparation method, choose 20 parts of raw materials, 18 parts of supplementary products and 20 parts of auxiliaries of the corresponding component, put into stirred tank, stir raw materials and supplementary products under 500r/min and mix for 25min, after stirring evenly, add the auxiliary agent, stir 18min under 400r/min for the second time, after mixing, the discharge is to heating the kettle, add dispersant and regulate to the temperature to 200 duC and heat for 48min, after the heat treatment is finished, discharge through the extruder, grind the material body into lamellar by the mill after the discharge, after cooling, cooperate with the drive unit to transmit the material body to pulverize in the pulverizer, pulverize, carry on the coarse and fine screening with the help of the vibrating screen;
wherein, cooling system adopts forced air cooling equipment, forced air cooling equipment is including the cover body, fan and driving motor, the cover body nestification is on transmission equipment, and fan transverse distribution is in one side of the cover body, the cover body opposite side is equipped with the thermovent, connect through the drive belt between the fan, the fan and the driving motor of cover body one end are connected.
The following are analytical comparisons between three groups of examples:
through the analysis, the influence on the preparation efficiency is caused by different cooling modes under the same mixing condition and melting condition between the first embodiment and the second embodiment, and the influence on the preparation efficiency is caused by different component raw materials, auxiliary materials and auxiliary agents and different mixing conditions and melting conditions under the same cooling mode between the first embodiment and the third embodiment;
through the analysis of the table above, because air-cooled cooperation transmission can reach portable refrigerated effect to the coating after milling, consequently, can not cause the influence to whole preparation process, and the mode of natural cooling needs cool off earlier, the transmission again to prolonged the preparation process, simultaneously, under specified mixed condition, melting condition, the air-cooled equipment cooling of adoption can not cause the influence to whole preparation process.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A powder coating characterized by: the paint is characterized by comprising raw materials, auxiliary materials and auxiliaries, wherein the raw materials are thermoplastic resin, the thermoplastic resin is any one of PE-polyethylene, PP-polypropylene or PVC-polyvinyl chloride, the auxiliary materials comprise pigments and fillers, the auxiliaries comprise curing agents, flatting agents, preservatives, antifreezing agents and dispersing agents, and the raw materials, the auxiliary materials and the auxiliaries are mixed according to a ratio of 1: 0.9: 1 to prepare the powder coating through melt mixing processing.
2. The process for preparing a powder coating according to claim 1, wherein: the specific preparation method of the powder coating comprises the following steps:
s1, material selection: selecting raw materials and auxiliary materials of corresponding components according to the component proportion, and putting the raw materials and the auxiliary materials into a stirring kettle;
s2, premixing: stirring and mixing the raw materials and the auxiliary materials until the raw materials and the auxiliary materials are uniformly stirred, adding the auxiliary agents (the curing agent, the flatting agent, the preservative and the antifreezing agent), and stirring for the second time;
s3, melt extrusion: discharging the mixture into a heating kettle after mixing, adding a dispersing agent for heating treatment, and discharging the mixture through an extruder after the heating treatment is finished;
s4, grinding and screening: and grinding the material body into thin sheets by a grinding machine after discharging, matching with a transmission device to transmit the material body into a grinder to grind after cooling, and performing coarse and fine screening by a vibrating screen after grinding.
3. A process for the preparation of a powder coating according to claim 2, characterized in that: in S2, the mixing time of the raw materials and the auxiliary materials is 20min to 30min, and the stirring speed is 400r/min to 600 r/min.
4. A process for the preparation of a powder coating according to claim 2, characterized in that: in S2, the time of the secondary stirring is 15min to 20min, and the stirring speed is 400r/min to 600 r/min.
5. A process for the preparation of a powder coating according to claim 2, characterized in that: in S4, the cooling mode adopts air cooling equipment, air cooling equipment includes the cover body, fan and driving motor, the cover body nests on transmission equipment, and fan transverse distribution is in one side of the cover body, the cover body opposite side is equipped with the thermovent, connect through the drive belt between the fan, the fan and the driving motor of cover body one end are connected.
6. A process for the preparation of a powder coating according to claim 2, characterized in that: in S3, the mixing and heating time is 40-50 min, and the heating temperature is 180-230 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210635994.9A CN114851516A (en) | 2022-06-07 | 2022-06-07 | Powder coating and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210635994.9A CN114851516A (en) | 2022-06-07 | 2022-06-07 | Powder coating and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114851516A true CN114851516A (en) | 2022-08-05 |
Family
ID=82624285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210635994.9A Pending CN114851516A (en) | 2022-06-07 | 2022-06-07 | Powder coating and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114851516A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908671A (en) * | 2020-09-03 | 2020-11-10 | 国电科学技术研究院有限公司 | Method and device for preventing scaling of desulfurization-preventing wastewater concentration system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204160742U (en) * | 2014-10-22 | 2015-02-18 | 重庆七彩虹化工有限公司 | With the powder coating extruder of cooling device |
| CN111961389A (en) * | 2020-06-04 | 2020-11-20 | 安徽美佳新材料股份有限公司 | Novel environment-friendly thermosetting powder coating formula and preparation process |
| CN113667361A (en) * | 2021-09-27 | 2021-11-19 | 赣州立幸邦新材料有限公司 | PVDF solid fluorocarbon coating and preparation process thereof |
-
2022
- 2022-06-07 CN CN202210635994.9A patent/CN114851516A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204160742U (en) * | 2014-10-22 | 2015-02-18 | 重庆七彩虹化工有限公司 | With the powder coating extruder of cooling device |
| CN111961389A (en) * | 2020-06-04 | 2020-11-20 | 安徽美佳新材料股份有限公司 | Novel environment-friendly thermosetting powder coating formula and preparation process |
| CN113667361A (en) * | 2021-09-27 | 2021-11-19 | 赣州立幸邦新材料有限公司 | PVDF solid fluorocarbon coating and preparation process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908671A (en) * | 2020-09-03 | 2020-11-10 | 国电科学技术研究院有限公司 | Method and device for preventing scaling of desulfurization-preventing wastewater concentration system |
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