阅读说明：本技术 一种木纹转印粉末涂料的生产工艺 (Production process of wood grain transfer printing powder coating ) 是由 王方银 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种木纹转印粉末涂料的生产工艺,包括木纹转印粉末涂料内部的化学成分及其重量百分比配方为：合成树脂0.5-1份、促进剂母粒5-7份、流平剂4-5份、成膜物质0.2-0.5份、颜料0.8-0.20份、钛白粉3-17份、防霉剂0.3-0.5份、碳酸钙8-16份、稀释剂5-10份、分散剂0.2-0.5份、消泡剂0.2-0.6份、滑石粉5-18份、增塑剂10-15份、稳定剂3-9份。本发明能够具有超流平、高清晰度以及优良物理和化学性能的木纹转印粉末涂料,同时能够满足高装饰性和高性能的要求。(The invention discloses a production process of wood grain transfer powder coating, which comprises the following chemical components in percentage by weight: 0.5-1 part of synthetic resin, 5-7 parts of accelerator master batch, 4-5 parts of flatting agent, 0.2-0.5 part of film forming material, 0.8-0.20 part of pigment, 3-17 parts of titanium dioxide, 0.3-0.5 part of mildew preventive, 8-16 parts of calcium carbonate, 5-10 parts of diluent, 0.2-0.5 part of dispersing agent, 0.2-0.6 part of defoaming agent, 5-18 parts of talcum powder, 10-15 parts of plasticizer and 3-9 parts of stabilizer. The wood grain transfer printing powder coating has super leveling property, high definition and excellent physical and chemical properties, and can meet the requirements of high decoration and high performance.)

1. A production process of wood grain transfer powder coating comprises the following chemical components in percentage by weight: 0.5-1 part of synthetic resin, 5-7 parts of accelerator master batch, 4-5 parts of leveling agent, 0.2-0.5 part of film forming material, 0.8-0.20 part of pigment, 3-17 parts of titanium dioxide, 0.3-0.5 part of mildew preventive, 8-16 parts of calcium carbonate, 5-10 parts of diluent, 0.2-0.5 part of dispersing agent, 0.2-0.6 part of defoaming agent, 5-18 parts of talcum powder, 10-15 parts of plasticizer and 3-9 parts of stabilizer, wherein the production process of the wood grain transfer powder coating comprises the following steps:

s1, mixing: adding the materials in the formula into a mixing tank, and premixing the materials;

s2, cryogenic extrusion: adding the mixed materials into a quick freezing machine for freezing and solidifying, and extruding the cooled mixed materials by using a double-screw extruder after the mixed materials reach the solidification temperature;

s3, coarse crushing: adding the extruded mixed material into a grinder for coarse grinding;

s4, double-screen crushing: the coarsely crushed material is added into a double-sieve crusher for crushing, so that after double-sieve crushing, the particle size of the powder is optimized, the production efficiency is improved, and the powder quality is improved;

s5, detection: carrying out detection on leveling performance, wood grain surface definition, hardness of wood grain coating, wear resistance, impact resistance, salt spray and aging performance of the double-screen crushed material;

s6, warehousing: and packaging the materials qualified for detection into a warehouse.

2. The process for producing wood grain transfer powder coating according to claim 1, wherein the volume of the mixing tank is 1500 liters, the rotation speed of the mixing tank under the condition of high-efficiency dispersion is 1200r/min, the mixing time is set to 50 minutes, and the standing time is set to 15 minutes.

3. The production process of the wood grain transfer powder coating as claimed in claim 2, wherein the pulverizer adopts a double-blade pulverizer, and under the synergistic action of two sets of mixing tools, the mixing has no dead angle and stronger shearing force, thereby greatly improving the mixing effect.

4. The process for producing wood grain transfer powder coating according to claim 3, wherein the freezer uses a cryogenic freezer to greatly increase the pulverization efficiency and optimize the particle size distribution by sheet-cooling the powder coating semi-finished product below the embrittlement temperature.

5. The process for producing wood grain transfer powder coating according to claim 4, wherein the deep cooling instant freezer has a curing temperature of 200 ℃ and a curing time of 10 min.

6. The process for producing wood grain transfer powder coating according to claim 5, wherein the rotation speed of the pulverizer pulverizing shaft is set to 3800 r/min.

7. The production process of the wood grain transfer powder coating as claimed in claim 5, wherein the synthetic resin is graphene resin, and graphene is added into the resin by utilizing the excellent toughness and elasticity of graphene, so as to improve the physical properties of the thermal transfer substrate.

8. The process for producing wood grain transfer powder coating according to claim 6, wherein the leveling agent is modified special acrylic acid.

9. The process for producing wood grain transfer powder coating according to claim 6, wherein the accelerator masterbatch is an onium salt accelerator masterbatch.

10. The process for producing wood grain transfer powder coating according to claim 6, wherein the pigment is selected from titanium white, chrome yellow, iron blue, chrome green, zinc oxide, etc., and the pigment is selected from different kinds according to requirements.

Technical Field

The invention relates to the technical field of wood grain transfer powder coating production, in particular to a production process of wood grain transfer powder coating.

Background

The powder coating is an environment-friendly coating with extremely small solvent discharge amount, the environment-friendly requirement is a great driving force for promoting the development of the powder coating, as manufacturers are seeking ways for reducing VOC (volatile organic compounds), the powder coating naturally replaces liquid coating in certain fields, the thermal transfer printing technology is in rapid development in recent years by combining with the aluminum profile market, the wood grain transfer printing powder coating is deeply loved by mass users with vivid decorative effect and bright color, the product is widely applied to the fields of aluminum profiles and furniture household appliances, and the individuation and diversification of home life and buildings are reflected.

However, in the wood grain transfer printing market, foreign companies mainly study polyurethane systems, but due to high price, manufacturers are promoted to develop common polyester transfer printing with lower price, but currently, the wood grain transfer printing powder coating produced in China is difficult to simultaneously consider leveling performance and physicochemical performance, and the development of the wood grain transfer printing coating is restricted.

Therefore, a wood grain transfer powder coating is needed, which can have super leveling, high definition and excellent physical and chemical properties, and can meet the requirements of high decoration and high performance.

Disclosure of Invention

The invention aims to provide a production process of a wood grain transfer powder coating, aiming at solving the problems that the existing wood grain transfer powder coating is difficult to simultaneously consider the leveling property and the physical and chemical properties, and the development of the wood grain transfer coating is restricted.

The invention is realized by the following steps:

a production process of wood grain transfer powder coating comprises the following chemical components in percentage by weight: 0.5-1 part of synthetic resin, 5-7 parts of accelerator master batch, 4-5 parts of leveling agent, 0.2-0.5 part of film forming material, 0.8-0.20 part of pigment, 3-17 parts of titanium dioxide, 0.3-0.5 part of mildew preventive, 8-16 parts of calcium carbonate, 5-10 parts of diluent, 0.2-0.5 part of dispersing agent, 0.2-0.6 part of defoaming agent, 5-18 parts of talcum powder, 10-15 parts of plasticizer and 3-9 parts of stabilizer, wherein the production process of the wood grain transfer powder coating comprises the following steps:

s1, mixing: adding the materials in the formula into mixing equipment, and premixing the materials;

s2, cryogenic extrusion: adding the mixed materials into a quick freezing machine for freezing and solidifying, and extruding the cooled mixed materials by using a double-screw extruder after the mixed materials reach the solidification temperature;

s3, coarse crushing: adding the extruded mixed material into a grinder for coarse grinding;

s4, double-screen crushing: the coarsely crushed material is added into a double-sieve crusher for crushing, so that after double-sieve crushing, the particle size of the powder is optimized, the production efficiency is improved, and the powder quality is improved;

s5, detection: carrying out detection on leveling performance, wood grain surface definition, hardness of wood grain coating, wear resistance, impact resistance, salt spray and aging performance of the double-screen crushed material;

s6, warehousing: and packaging the materials qualified for detection into a warehouse.

Further, the volume of the mixing tank was 1500 liters, the rotation speed of the mixing tank was 1200r/min in the case of high-efficiency dispersion, the mixing time was set to 50 minutes, and the standing time was set to 15 minutes.

Further, the rubbing crusher adopts double knives rubbing crusher, and under two sets of compounding cutters synergism, the compounding does not have the dead angle, and the shearing force is stronger, improves the compounding effect greatly.

Furthermore, the quick freezer adopts the cryrogenic quick freezer, through with powder coating semi-manufactured goods slice cooling to below the embrittlement temperature, increases crushing efficiency greatly, and optimizes the particle size distribution.

Further, the curing temperature of the deep cooling instant freezer is 200 ℃, and the curing time is 10 min.

Further, the rotation speed of the crushing shaft of the crusher is set to 3800 r/min.

Furthermore, the synthetic resin is graphene resin, and graphene is added into the resin by utilizing the excellent toughness and elasticity of the graphene, so that the physical property of the thermal transfer printing base material is improved, the graphene is a two-dimensional crystal which is formed by carbon atoms and has only one layer of atom thickness, and the graphene has the advantages of high toughness, breaking strength, conductivity, free radical quenching property and the like. When the graphene is added into other materials to form the composite material, the layered structure of the graphene can improve the corrosion resistance and the air tightness of the composite material. The characteristics of graphene are combined, so that the toughness, the breaking strength, the electrical conductivity, the thermal conductivity, the weather resistance, the air tightness, the corrosion resistance and the like of the composite material can be obviously improved by adding the graphene, and the physical and chemical properties of the powder coating can be obviously improved by adding a proper amount of graphene into resin.

Furthermore, the leveling agent adopts the compatibility of modified special acrylic acid and acrylate leveling agents to control the surface state capacity of the coating, the compatibility is too good, the modified special acrylic acid and acrylate leveling agents are dissolved in the coating, a new interface cannot be formed on the surface of the coating, the leveling effect cannot be provided, the compatibility is too poor, the modified special acrylic acid and acrylate leveling agents cannot be uniformly distributed on the surface of the coating and can be mutually gathered, the shrinkage-hole-shaped defects are easily generated, the gloss of the coating is reduced, fog and shadow are generated, and other adverse side effects are generated.

Furthermore, the accelerator master batch adopts an onium salt accelerator master batch, and the synthesized onium salt catalyst master batch is utilized to help the micromolecule organic matter of the coating to generate phase transfer, promote the micromolecule in the formula to generate reaction, improve the cross-linking density and compactness of the formed film and improve the chemical resistance of the wood grain transfer powder coating.

Further, the types of the pigments comprise titanium white, chrome yellow, iron blue, chrome green, zinc oxide and the like, different types of pigments are selected according to needs, the types of the pigments comprise titanium white, chrome yellow, iron blue, chrome green, zinc oxide and the like, and different types of pigments are selected according to needs.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, materials in a formula are added into a mixed structure according to components and synthesized into required onium salt type accelerator master batches and acrylic acid leveling agents, raw materials are weighed according to a formula ratio, premixed, melted and extruded by an extruder after premixing, extruded materials are coarsely crushed after being cooled, fine crushing is carried out on the powder coating in order to meet the requirement of electrostatic powder coating, the crushed powder coating is packaged and warehoused after detection, the synthesized onium salt type catalyst master batches are utilized to help micromolecular organic matters of the coating to generate phase transfer, the micromolecular reaction in the formula is promoted, the cross-linking density and compactness of a formed film are improved, and the chemical resistance of the wood grain transfer powder coating can be improved; the compatibility of the acrylate leveling agent is utilized to control the surface state capability of the coating, the compatibility is too good, the acrylate leveling agent is dissolved in the coating, a new interface cannot be formed on the surface of the coating, the leveling effect cannot be provided, the compatibility is too poor, the acrylate leveling agent cannot be uniformly distributed on the surface of the coating, the acrylate leveling agent and the coating can be aggregated together, the defect of shrinkage is easily generated, the gloss of the coating is reduced, and the undesirable side effects such as fog shadow and the like are generated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic production flow diagram of the present invention;

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1, a process for producing a wood grain transfer powder coating includes the following chemical components by weight percent: 0.5-1 part of synthetic resin, 5-7 parts of accelerator master batch, 4-5 parts of leveling agent, 0.2-0.5 part of film forming material, 0.8-0.20 part of pigment, 3-17 parts of titanium dioxide, 0.3-0.5 part of mildew preventive, 8-16 parts of calcium carbonate, 5-10 parts of diluent, 0.2-0.5 part of dispersing agent, 0.2-0.6 part of defoaming agent, 5-18 parts of talcum powder, 10-15 parts of plasticizer and 3-9 parts of stabilizer, wherein the production process of the wood grain transfer powder coating comprises the following steps:

s1, mixing: adding the materials in the formula into mixing equipment, and premixing the materials;

s2, cryogenic extrusion: adding the mixed materials into a quick freezing machine for freezing and solidifying, and extruding the cooled mixed materials by using a double-screw extruder after the mixed materials reach the solidification temperature;

s3, coarse crushing: adding the extruded mixed material into a grinder for coarse grinding;

s4, double-screen crushing: the coarsely crushed material is added into a double-sieve crusher for crushing, so that after double-sieve crushing, the particle size of the powder is optimized, the production efficiency is improved, and the powder quality is improved;

s5, detection: carrying out detection on leveling performance, wood grain surface definition, hardness of wood grain coating, wear resistance, impact resistance, salt spray and aging performance of the double-screen crushed material;

s6, warehousing: and packaging the materials qualified for detection into a warehouse.

Adding materials in a formula into a mixed structure according to components, synthesizing required onium salt type accelerator master batches and acrylic acid leveling agents, weighing raw materials according to a formula ratio, premixing, melting, extruding and mixing the materials by using an extruder after premixing, roughly crushing the extruded materials after supercooling, packaging and warehousing the crushed powder coating after detection in order to meet the requirement of electrostatic powder coating, and promoting the micromolecule in the formula to react by using the synthesized onium salt type catalyst master batches to help micromolecule organic matters of the coating to generate phase transfer so as to improve the crosslinking density and compactness of a formed film and improve the chemical resistance of the wood grain transfer powder coating; the compatibility of the acrylate leveling agent is utilized to control the surface state capability of the coating, the compatibility is too good, the acrylate leveling agent is dissolved in the coating, a new interface cannot be formed on the surface of the coating, the leveling effect cannot be provided, the compatibility is too poor, the acrylate leveling agent cannot be uniformly distributed on the surface of the coating, the acrylate leveling agent and the coating can be aggregated together, the defect of shrinkage is easily generated, the gloss of the coating is reduced, and the undesirable side effects such as fog shadow and the like are generated.

Referring to fig. 1, the volume of the mixing tank is 1500 liters, the rotation speed of the mixing tank is 1200r/min under the condition of high-efficiency dispersion, the mixing time is set to be 50 minutes, and the standing time is set to be 15 minutes.

Referring to fig. 1, the pulverizer adopts a double-blade pulverizer, and under the synergistic effect of two sets of material mixing cutters, material mixing has no dead angle, shearing force is stronger, and material mixing effect is greatly improved.

Referring to fig. 1, the instant freezer adopts a deep cooling instant freezer, and the powder coating semi-finished product is cooled to below the embrittlement temperature in a sheet shape, so that the crushing efficiency is greatly improved, and the particle size distribution is optimized.

Referring to fig. 1, the deep-freezing instant freezer has a curing temperature of 200 ℃ and a curing time of 10 min.

Referring to FIG. 1, the rotation speed of the pulverizing shaft of the pulverizer was set to 3800 r/min.

Referring to fig. 1, the synthetic resin is graphene resin, and graphene is added to the resin to improve physical properties of the thermal transfer substrate by using excellent toughness and elasticity of graphene, and is a two-dimensional crystal composed of carbon atoms and having only one atomic thickness, and has advantages of high toughness and fracture strength, electrical conductivity, radical quenching property, and the like. When the graphene is added into other materials to form the composite material, the layered structure of the graphene can improve the corrosion resistance and the air tightness of the composite material. The characteristics of graphene are combined, so that the toughness, the breaking strength, the electrical conductivity, the thermal conductivity, the weather resistance, the air tightness, the corrosion resistance and the like of the composite material can be obviously improved by adding the graphene, and the physical and chemical properties of the powder coating can be obviously improved by adding a proper amount of graphene into resin.

Referring to fig. 1, the leveling agent adopts modified special acrylic acid and the compatibility of the acrylate leveling agent to control the surface state capability of the coating, the compatibility is too good, the modified special acrylic acid and the acrylate leveling agent are dissolved in the coating, a new interface cannot be formed on the surface of the coating, the leveling effect cannot be provided, the compatibility is too poor, the modified special acrylic acid and the acrylate leveling agent cannot be uniformly distributed on the surface of the coating, the modified special acrylic acid and the acrylate leveling agent can be gathered together, the shrinkage-hole-shaped defects are easily generated, the gloss of the coating is reduced, and the fog and.

Referring to fig. 1, the accelerator masterbatch is an onium salt accelerator masterbatch, and the synthesized onium salt catalyst masterbatch is used to help phase transfer of small molecular organic matters of the coating, promote small molecular reactions in the formula, improve the crosslinking density and compactness of the formed film, and improve the chemical resistance of the wood grain transfer powder coating.

Referring to fig. 1, the types of the pigments include titanium white, chrome yellow, iron blue, chrome green, zinc oxide, and the like, and different types of pigments are selected as needed, and the types of the pigments include titanium white, chrome yellow, iron blue, chrome green, zinc oxide, and the like, and different types of pigments are selected as needed.

The device obtained by the design can basically meet the use of the wood grain transfer powder coating which can have super leveling, high definition and excellent physical and chemical properties and can meet the requirements of high decorativeness and high performance, but the designer further improves the device by aiming at further improving the function.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.