CN111154343A - Weather-resistant modified polyethylene powder coating and formula thereof - Google Patents
Weather-resistant modified polyethylene powder coating and formula thereof Download PDFInfo
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- CN111154343A CN111154343A CN201911381431.6A CN201911381431A CN111154343A CN 111154343 A CN111154343 A CN 111154343A CN 201911381431 A CN201911381431 A CN 201911381431A CN 111154343 A CN111154343 A CN 111154343A
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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
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/08—Copolymers of ethene
- C09D123/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C09D123/0815—Copolymers of ethene with aliphatic 1-olefins
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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
- 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
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a weather-resistant modified polyethylene powder coating and a formula thereof, and is characterized in that the polyethylene powder coating comprises the following components in parts by weight: 45-60 parts of linear low-density polyethylene, 8-12 parts of epoxy resin, 1-3 parts of 3-aminopropyltrimethoxysilane, 0.3-0.8 part of nano boron carbide, 2-5 parts of pigment, 0.3-0.6 part of light stabilizer, 2-4 parts of antioxidant and 1-2 parts of flatting agent, and the preparation method comprises the following steps: weighing raw materials, and mixing the raw materials; melting in a melting device after mixing; extruding and cutting in a double-screw extruder, and pulverizing and sieving in a pulverizer. The polyethylene powder disclosed by the invention is low in cost, can show good fluidity and adhesiveness, and the formed coating is compact and smooth, is heat-resistant and stable, is hard and wear-resistant, safe and flame-retardant, is durable in use and has great market competitiveness.
Description
Technical Field
The invention belongs to the field of modified polyethylene powder coatings and formulas thereof, and particularly relates to a weather-resistant modified polyethylene powder coating and a formula thereof.
Background
The polyethylene powder coating is a common powder coating and is mainly used for the anticorrosion coating of refrigerator baskets, highway guardrails, highway barriers, iron wires, steel-plastic composite electric threading pipes, large steel containers and the like. The different applications have different requirements on the powder, some of the applications only need good toughness, some of the applications only need good adhesive force and chemical corrosion resistance, some of the applications only need good adhesive force and stress cracking resistance, the highway guardrail has the highest requirement, not only needs good adhesive force and toughness, but also needs good chemical corrosion resistance, stress cracking resistance, salt fog corrosion resistance, humidity resistance, heat resistance, sun resistance and the like, and the chemical corrosion resistance, the stress cracking resistance, the salt fog corrosion resistance and the sun resistance are collectively called as weather resistance.
At present, the polyethylene powder coating occupies a great proportion in the existing thermoplastic powder coating, and the polyethylene powder coating has the advantages of cheap raw materials, chemical corrosion resistance, good electrical insulation and low-temperature stability, but has the obvious defects of poor mechanical strength, poor film adhesion, easy cracking on the surface, corrosion resistance and weather resistance, and the competitiveness and usability of the polyethylene powder coating are improved if the application range of the polyethylene powder coating is continuously expanded.
Disclosure of Invention
In order to solve the technical problems, the invention provides a weather-resistant modified polyethylene powder coating and a formula thereof, wherein the polyethylene powder coating comprises the following components in parts by weight: 45-60 parts of linear low-density polyethylene, 8-12 parts of epoxy resin, 1-3 parts of 3-aminopropyltrimethoxysilane, 0.3-0.8 part of nano boron carbide, 2-5 parts of pigment, 0.3-0.6 part of light stabilizer, 2-4 parts of antioxidant and 1-2 parts of flatting agent, and the preparation method comprises the following steps:
s1: firstly, weighing raw materials in parts by weight, adding the weighed epoxy resin and 3-aminopropyltrimethoxysilane into a stirrer, stirring and mixing, and placing the mixture aside;
s2: sequentially adding the weighed linear low-density polyethylene, nano boron carbide, pigment, light stabilizer, antioxidant and flatting agent into a high-speed mixer, and then adding a mixture of epoxy resin and 3-aminopropyltrimethoxysilane to obtain a final mixture;
s3: putting the final mixture into a melting device for melting, then putting the melted mixture into a double-screw extruder for extruding, and cutting the extruded final mixture into segments;
s4: and (4) putting the final mixture after the cutting into sections into a grinder for grinding, and sieving the mixture after grinding into powder to obtain the finished product of the polyethylene powder coating.
Preferably, the powder is crushed and sieved by a 40-mesh sieve.
Preferably, the melting temperature of the melting device is 120-180 ℃.
Preferably, the linear low density polyethylene has higher softening temperature and melting temperature, has the advantages of high strength, good toughness, high rigidity, good heat resistance and cold resistance, and has good environmental stress cracking resistance, impact strength, tear strength and other properties.
Preferably, the nano boron carbide is an artificially synthesized super-hard material, is unreactive with acid and alkali solutions, is one of the most stable substances to acid, is stable in all concentrated or dilute acid or alkali aqueous solutions, and has stable physical and chemical properties.
Preferably, the leveling agent is a common coating auxiliary agent, can promote the coating to form a flat, smooth and uniform coating film in the drying film-forming process, can effectively reduce the surface tension of the coating liquid, can improve the permeability of the coating liquid, can reduce the possibility of generating spots and stains during brushing, can increase the coverage, and can ensure that the film is formed uniformly and naturally.
Compared with the prior art, the invention has the beneficial effects that: the polyethylene powder has low cost, good fluidity and adhesiveness, compact and smooth coating, heat resistance, stability, hardness, wear resistance, safety, flame retardance, durability and great market competitiveness.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
The invention is further described below:
example (b):
a weather-resistant modified polyethylene powder coating and a formula thereof are disclosed, wherein the polyethylene powder coating comprises the following components in parts by weight: 45-60 parts of linear low-density polyethylene, 8-12 parts of epoxy resin, 1-3 parts of 3-aminopropyltrimethoxysilane, 0.3-0.8 part of nano boron carbide, 2-5 parts of pigment, 0.3-0.6 part of light stabilizer, 2-4 parts of antioxidant and 1-2 parts of flatting agent, and the preparation method comprises the following steps:
s1: firstly, weighing raw materials in parts by weight, adding the weighed epoxy resin and 3-aminopropyltrimethoxysilane into a stirrer, stirring and mixing, and placing the mixture aside;
s2: sequentially adding the weighed linear low-density polyethylene, nano boron carbide, pigment, light stabilizer, antioxidant and flatting agent into a high-speed mixer, and then adding a mixture of epoxy resin and 3-aminopropyltrimethoxysilane to obtain a final mixture;
s3: putting the final mixture into a melting device for melting, then putting the melted mixture into a double-screw extruder for extruding, and cutting the extruded final mixture into segments;
s4: and (4) putting the final mixture after the cutting into sections into a grinder for grinding, and sieving the mixture after grinding into powder to obtain the finished product of the polyethylene powder coating.
Specifically, the powder is crushed and sieved by a 40-mesh sieve.
Specifically, the melting temperature of the melting device is 120-180 ℃.
Specifically, the linear low-density polyethylene has the advantages of higher softening temperature and melting temperature, high strength, good toughness, high rigidity, good heat resistance and cold resistance, and the like, and also has good environmental stress cracking resistance, impact strength, tear strength and the like.
Specifically, the nano boron carbide is an artificially synthesized super-hard material, does not react with an acid solution or an alkali solution, is one of the most stable substances to acid, is stable in all concentrated or diluted acid or alkali aqueous solutions, and has stable physical and chemical properties.
Specifically, the leveling agent is a common coating additive, can promote a coating to form a flat, smooth and uniform coating film in a drying film-forming process, can effectively reduce the surface tension of a finishing liquid, can improve the permeability of a coating liquid, can reduce the possibility of generating spots and stains during brushing, can increase the coverage, and can ensure that the film is formed uniformly and naturally.
Example 1
Firstly, weighing 45-60 parts of linear low-density polyethylene, 8-12 parts of epoxy resin, 1-3 parts of 3-aminopropyltrimethoxysilane, 0.3-0.8 part of nano boron carbide, 2-5 parts of pigment, 0.3-0.6 part of light stabilizer, 2-4 parts of antioxidant and 1-2 parts of flatting agent, adding the weighed epoxy resin and 3-aminopropyltrimethoxysilane into a stirrer, stirring and mixing, and placing aside after mixing; sequentially adding the weighed linear low-density polyethylene, nano boron carbide, pigment, light stabilizer, antioxidant and flatting agent into a high-speed mixer, and then adding a mixture of epoxy resin and 3-aminopropyltrimethoxysilane to obtain a final mixture; putting the final mixture into a melting device, melting the final mixture at the temperature of 120-180 ℃, then putting the melted mixture into a double-screw extruder for extrusion, and cutting the extruded final mixture into segments; and (3) putting the final mixture after cutting into sections into a grinder for grinding, and sieving the mixture with a 40-mesh sieve after grinding into powder to obtain the finished product of the polyethylene powder coating.
It should be noted that, in this document, moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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. The weather-resistant modified polyethylene powder coating and the formula thereof are characterized in that the polyethylene powder coating comprises the following components in parts by weight: 45-60 parts of linear low-density polyethylene, 8-12 parts of epoxy resin, 1-3 parts of 3-aminopropyltrimethoxysilane, 0.3-0.8 part of nano boron carbide, 2-5 parts of pigment, 0.3-0.6 part of light stabilizer, 2-4 parts of antioxidant and 1-2 parts of flatting agent, and the preparation method comprises the following steps:
s1: firstly, weighing raw materials in parts by weight, adding the weighed epoxy resin and 3-aminopropyltrimethoxysilane into a stirrer, stirring and mixing, and placing the mixture aside;
s2: sequentially adding the weighed linear low-density polyethylene, nano boron carbide, pigment, light stabilizer, antioxidant and flatting agent into a high-speed mixer, and then adding a mixture of epoxy resin and 3-aminopropyltrimethoxysilane to obtain a final mixture;
s3: putting the final mixture into a melting device for melting, then putting the melted mixture into a double-screw extruder for extruding, and cutting the extruded final mixture into segments;
s4: and (4) putting the final mixture after the cutting into sections into a grinder for grinding, and sieving the mixture after grinding into powder to obtain the finished product of the polyethylene powder coating.
2. The weather-resistant modified polyethylene powder coating and the formulation thereof as claimed in claim 1, wherein the powder is crushed and sieved through a 40-mesh sieve.
3. The weather-resistant modified polyethylene powder coating and the formulation thereof as claimed in claim 1, wherein the melting temperature of the melting device is 120-180 ℃.
4. The weather-resistant modified polyethylene powder coating and the formulation thereof as claimed in claim 1, wherein the linear low density polyethylene has higher softening temperature and melting temperature, and has the advantages of high strength, good toughness, high rigidity, good heat resistance, good cold resistance, good environmental stress cracking resistance, good impact strength, good tear strength, etc.
5. The weather-resistant modified polyethylene powder coating and the formulation thereof as claimed in claim 1, wherein the nano boron carbide is a synthetic super hard material, which is non-reactive with acid and alkali solutions, is one of the most stable substances to acid, is stable in all concentrated or diluted acid and alkali aqueous solutions, and has stable physical and chemical properties.
6. The weather-resistant modified polyethylene powder coating and the formulation thereof as claimed in claim 1, wherein the leveling agent is a conventional coating assistant, which can promote the coating to form a flat, smooth and uniform coating film during the drying film-forming process, and can effectively reduce the surface tension of the coating liquid, improve the permeability of the coating liquid, reduce the possibility of spots and stains during the brushing process, increase the coverage, and make the film-forming process uniform and natural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911381431.6A CN111154343A (en) | 2019-12-27 | 2019-12-27 | Weather-resistant modified polyethylene powder coating and formula thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911381431.6A CN111154343A (en) | 2019-12-27 | 2019-12-27 | Weather-resistant modified polyethylene powder coating and formula thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111154343A true CN111154343A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911381431.6A Pending CN111154343A (en) | 2019-12-27 | 2019-12-27 | Weather-resistant modified polyethylene powder coating and formula thereof |
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| Country | Link |
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| CN (1) | CN111154343A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453404A (en) * | 2010-10-17 | 2012-05-16 | 青岛三利中德美水设备有限公司 | Novel polyethylene powder coating |
| US9499677B2 (en) * | 2013-03-15 | 2016-11-22 | Melior Innovations, Inc. | Black ceramic additives, pigments, and formulations |
-
2019
- 2019-12-27 CN CN201911381431.6A patent/CN111154343A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453404A (en) * | 2010-10-17 | 2012-05-16 | 青岛三利中德美水设备有限公司 | Novel polyethylene powder coating |
| US9499677B2 (en) * | 2013-03-15 | 2016-11-22 | Melior Innovations, Inc. | Black ceramic additives, pigments, and formulations |
Non-Patent Citations (1)
| Title |
|---|
| 陈光等: "《新材料概论》", 30 April 2013, 国防工业出版社 * |
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Application publication date: 20200515 |