CN111438835A - Composite environment-friendly plastic particle and preparation method thereof - Google Patents
Composite environment-friendly plastic particle and preparation method thereof Download PDFInfo
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- CN111438835A CN111438835A CN202010251694.1A CN202010251694A CN111438835A CN 111438835 A CN111438835 A CN 111438835A CN 202010251694 A CN202010251694 A CN 202010251694A CN 111438835 A CN111438835 A CN 111438835A
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- 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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- 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
- C08L2201/06—Biodegradable
Abstract
The invention provides a composite environment-friendly plastic particle and a preparation method thereof, wherein the preparation method comprises the following steps: putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling Ar/O2Mixing the gas; heating to a large amount of white fog-like smoke, and cooling to form cotton silk-like powder to obtain ZnO nanorods; adding deionized water and isopropanol into a ZnO nanorod, adjusting the pH value to be =9 by using ammonia water, dropwise adding ethyl orthosilicate under stirring, and reacting under stirring; washing the product with absolute ethyl alcohol to be neutral, and drying in an oven; taking out and calcining to obtain a ZnO nano rod coated with silicon dioxide;preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of a ZnO nano rod coated by silicon dioxide; dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h, cooling and discharging to form composite polypropylene particles after dropwise adding is completed within 1 h; taking bamboo powder, and carrying out surface treatment by using a dispersing agent; premixing the treated bamboo powder and the composite polypropylene particles on a high-speed mixer; melting and blending the premix on a double-screw extruder, and extruding and granulating; drying to obtain the composite environment-friendly plastic particles. The composite environment-friendly plastic particle disclosed by the invention is good in mechanical property, high in degradation degree and good in environment-friendly characteristic.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to composite environment-friendly plastic particles and a preparation method thereof.
Background
Plastic particles are commonly known as plastic particles, are raw materials for storing, transporting and processing and molding plastics in the form of semi-finished products, are high molecular polymers, and are widely applied to various fields of production and life due to the advantages of low price, light weight, high specific strength, small heat conductivity coefficient, good chemical stability and the like. The polypropylene is a semi-crystalline thermoplastic plastic, has high impact resistance, high mechanical property and toughness, resists corrosion of various organic solvents and acid and alkali, is widely applied in the industry, but has poor strength and toughness, is enhanced in strength and toughness in a composite mode, is improved in degradability by adding a natural environment-friendly material, and has wide market prospect.
Disclosure of Invention
The technical problem to be solved is as follows: the invention aims to provide composite environment-friendly plastic particles and a preparation method thereof.
The technical scheme is as follows: a preparation method of composite environment-friendly plastic particles comprises the following steps:
(1) putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling Ar/O2Mixing the gas;
(2) heating to 900 deg.C for 2 min to generate a large amount of white fog-like smoke at the furnace mouth, and cooling to obtain cotton filament-like powder to obtain ZnO nanorod;
(3) adding deionized water and isopropanol into ZnO nanorod, adjusting pH to be =9 by using ammonia water, dropwise adding ethyl orthosilicate under stirring, and reacting for 24-26h under stirring at 30-35 ℃;
(4) washing the product with absolute ethyl alcohol to neutrality, and drying in an oven at 60-70 ℃ for 24 h;
(5) taking out and calcining at 800 ℃ to obtain a ZnO nano rod coated with silicon dioxide;
(6) preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of a ZnO nano rod coated by silicon dioxide;
(7) dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h, cooling and discharging to form composite polypropylene particles after dropwise adding is finished within 1 h;
(8) taking bamboo powder, and carrying out surface treatment by using a dispersing agent;
(9) premixing the treated bamboo powder and the composite polypropylene particles on a high-speed mixer;
(10) melting and blending the premix on a double-screw extruder, and extruding and granulating;
(11) drying to obtain the composite environment-friendly plastic particles.
Further, the mass ratio of the ZnO nanorods to the tetraethoxysilane in the step (3) is 1: 1.
Further, the mass ratio of the polypropylene in the step (7) to the ZnO nano-rod coated by the silicon dioxide in the step (6) is 6: 1-2.
Further, the dispersing agent is polyethylene glycol 200 or polyethylene glycol 400.
Further, the mass ratio of the bamboo powder treated in the step (9) to the composite polypropylene particles is 1: 6-8.
Further, the extrusion temperature in the step (10) is 190-200 ℃.
The composite environment-friendly plastic particle prepared by the preparation method of the composite environment-friendly plastic particle.
Has the advantages that:
1. the ZnO nano-rod coated by the silicon dioxide has the advantages of reduced hydroxyl on the surface and difficult agglomeration.
2. The composite environment-friendly plastic particle has good mechanical property, and the impact strength, the tensile strength and the bending strength respectively reach 155.4J/m, 34.8MPa and 53.3 MPa. Meanwhile, the degradable polyester film has good degradation performance and good environmental protection property.
Detailed Description
Example 1
A preparation method of composite environment-friendly plastic particles comprises the following steps:
(1) putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling Ar/O2Mixing the gas;
(2) heating to 900 deg.C for 2 min to generate a large amount of white fog-like smoke at the furnace mouth, and cooling to obtain cotton filament-like powder to obtain ZnO nanorod;
(3) adding deionized water and isopropanol into ZnO nanorods, adjusting the pH to be =9 by using ammonia water, dropwise adding tetraethoxysilane under stirring, and reacting for 24 hours under stirring at 30 ℃, wherein the mass ratio of the ZnO nanorods to the tetraethoxysilane is 1: 1;
(4) washing the product with absolute ethyl alcohol to neutrality, and drying in an oven at 60-70 ℃ for 24 h;
(5) taking out and calcining at 800 ℃ to obtain a ZnO nano rod coated with silicon dioxide;
(6) preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of a ZnO nano rod coated by silicon dioxide;
(7) dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h after dropwise adding is finished, cooling and discharging to form composite polypropylene particles, wherein the mass ratio of the polypropylene to the ZnO nanorods coated with the silicon dioxide in the step (6) is 6: 1;
(8) taking bamboo powder, and carrying out surface treatment by using polyethylene glycol 200;
(9) premixing the treated bamboo powder and the composite polypropylene particles on a high-speed mixer, wherein the mass ratio of the treated bamboo powder to the composite polypropylene particles is 1: 6;
(10) melting and blending the premix on a double-screw extruder, and extruding and granulating, wherein the extrusion temperature is 190 ℃;
(11) drying to obtain the composite environment-friendly plastic particles.
Example 2
A preparation method of composite environment-friendly plastic particles comprises the following steps:
(1) putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling the air into the reaction furnaceAr/O2Mixing the gas;
(2) heating to 900 deg.C for 2 min to generate a large amount of white fog-like smoke at the furnace mouth, and cooling to obtain cotton filament-like powder to obtain ZnO nanorod;
(3) adding deionized water and isopropanol into ZnO nanorods, adjusting the pH to be =9 by using ammonia water, dropwise adding tetraethoxysilane under stirring, and reacting for 25 hours under stirring at 30 ℃, wherein the mass ratio of the ZnO nanorods to the tetraethoxysilane is 1: 1;
(4) washing the product with absolute ethyl alcohol to neutrality, and drying in a 65 ℃ oven for 24 h;
(5) taking out and calcining at 800 ℃ to obtain a ZnO nano rod coated with silicon dioxide;
(6) preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of a ZnO nano rod coated by silicon dioxide;
(7) dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h after dropwise adding is finished, cooling and discharging to form composite polypropylene particles, wherein the mass ratio of the polypropylene to the ZnO nanorods coated with the silicon dioxide in the step (6) is 6: 1;
(8) taking bamboo powder, and carrying out surface treatment by using polyethylene glycol 400;
(9) premixing the treated bamboo powder and the composite polypropylene particles on a high-speed mixer, wherein the mass ratio of the treated bamboo powder to the composite polypropylene particles is 1: 7;
(10) melting and blending the premix on a double-screw extruder, and extruding and granulating, wherein the extrusion temperature is 195 ℃;
(11) drying to obtain the composite environment-friendly plastic particles.
Example 3
A preparation method of composite environment-friendly plastic particles comprises the following steps:
(1) putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling Ar/O2Mixing the gas;
(2) heating to 900 deg.C for 2 min to generate a large amount of white fog-like smoke at the furnace mouth, and cooling to obtain cotton filament-like powder to obtain ZnO nanorod;
(3) adding deionized water and isopropanol into ZnO nanorods, adjusting the pH to be =9 by using ammonia water, dropwise adding tetraethoxysilane under stirring, and reacting for 25 hours under stirring at 35 ℃, wherein the mass ratio of the ZnO nanorods to the tetraethoxysilane is 1: 1;
(4) washing the product with absolute ethyl alcohol to neutrality, and drying in a 65 ℃ oven for 24 h;
(5) taking out and calcining at 800 ℃ to obtain a ZnO nano rod coated with silicon dioxide;
(6) preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of a ZnO nano rod coated by silicon dioxide;
(7) dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h after dropwise adding is finished within 1h, cooling and discharging to form composite polypropylene particles, wherein the mass ratio of the polypropylene to the ZnO nanorods coated with the silicon dioxide in the step (6) is 6: 2;
(8) taking bamboo powder, and carrying out surface treatment by using polyethylene glycol 200;
(9) premixing the treated bamboo powder and the composite polypropylene particles on a high-speed mixer, wherein the mass ratio of the treated bamboo powder to the composite polypropylene particles is 1: 7;
(10) melting and blending the premix on a double-screw extruder, and extruding and granulating, wherein the extrusion temperature is 195 ℃;
(11) drying to obtain the composite environment-friendly plastic particles.
Example 4
A preparation method of composite environment-friendly plastic particles comprises the following steps:
(1) putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling Ar/O2Mixing the gas;
(2) heating to 900 deg.C for 2 min to generate a large amount of white fog-like smoke at the furnace mouth, and cooling to obtain cotton filament-like powder to obtain ZnO nanorod;
(3) adding deionized water and isopropanol into ZnO nanorods, adjusting the pH to be =9 by using ammonia water, dropwise adding tetraethoxysilane under stirring, and reacting for 26 hours under stirring at 35 ℃, wherein the mass ratio of the ZnO nanorods to the tetraethoxysilane is 1: 1;
(4) washing the product with absolute ethyl alcohol to neutrality, and drying in an oven at 70 ℃ for 24 h;
(5) taking out and calcining at 800 ℃ to obtain a ZnO nano rod coated with silicon dioxide;
(6) preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of a ZnO nano rod coated by silicon dioxide;
(7) dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h after dropwise adding is finished within 1h, cooling and discharging to form composite polypropylene particles, wherein the mass ratio of the polypropylene to the ZnO nanorods coated with the silicon dioxide in the step (6) is 6: 1-2;
(8) taking bamboo powder, and carrying out surface treatment by using polyethylene glycol 400;
(9) premixing the treated bamboo powder and the composite polypropylene particles on a high-speed mixer, wherein the mass ratio of the treated bamboo powder to the composite polypropylene particles is 1: 8;
(10) melting and blending the premix on a double-screw extruder, and extruding and granulating, wherein the extrusion temperature is 200 ℃;
(11) drying to obtain the composite environment-friendly plastic particles.
Comparative example 1
Compared with example 4, the difference of the comparative example is that no bamboo powder is added, and the specific steps are as follows:
a preparation method of composite environment-friendly plastic particles comprises the following steps:
(1) putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling Ar/O2Mixing the gas;
(2) heating to 900 deg.C for 2 min to generate a large amount of white fog-like smoke at the furnace mouth, and cooling to obtain cotton filament-like powder to obtain ZnO nanorod;
(3) adding deionized water and isopropanol into ZnO nanorods, adjusting the pH to be =9 by using ammonia water, dropwise adding tetraethoxysilane under stirring, and reacting for 26 hours under stirring at 35 ℃, wherein the mass ratio of the ZnO nanorods to the tetraethoxysilane is 1: 1;
(4) washing the product with absolute ethyl alcohol to neutrality, and drying in an oven at 70 ℃ for 24 h;
(5) taking out and calcining at 800 ℃ to obtain a ZnO nano rod coated with silicon dioxide;
(6) preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of a ZnO nano rod coated by silicon dioxide;
(7) dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h after dropwise adding is finished within 1h, cooling and discharging to form composite polypropylene particles, wherein the mass ratio of the polypropylene to the ZnO nanorods coated with the silicon dioxide in the step (6) is 6: 1-2;
(8) melting and blending the composite polypropylene particles on a double-screw extruder, and extruding and granulating, wherein the extrusion temperature is 200 ℃;
(9) drying to obtain the composite environment-friendly plastic particles. Tensile tests were carried out with a universal electronic tensile machine in accordance with ISO527 (DIN 53455).
Comparative example 2
Compared with the embodiment 1, the difference of the comparative example is that the ZnO nano-rod is not treated, and the specific steps are as follows:
a preparation method of composite environment-friendly plastic particles comprises the following steps:
(1) putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling Ar/O2Mixing the gas;
(2) heating to 900 deg.C for 2 min to generate a large amount of white fog-like smoke at the furnace mouth, and cooling to obtain cotton filament-like powder to obtain ZnO nanorod;
(3) preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of ZnO nano-rods;
(4) dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h after dropwise adding is finished, cooling and discharging to form composite polypropylene particles, wherein the mass ratio of the polypropylene to the ZnO nanorods coated with the silicon dioxide in the step (6) is 6: 1;
(5) taking bamboo powder, and carrying out surface treatment by using polyethylene glycol 200;
(6) premixing the treated bamboo powder and the composite polypropylene particles on a high-speed mixer, wherein the mass ratio of the treated bamboo powder to the composite polypropylene particles is 1: 6;
(7) melting and blending the premix on a double-screw extruder, and extruding and granulating, wherein the extrusion temperature is 190 ℃;
(8) drying to obtain the composite environment-friendly plastic particles.
The bending test (three-point) was carried out in accordance with ISO178 (DIN 53452) using a universal electronic tensile machine, with a specimen span of 40mm and a specified deflection of 3.2 mm.
The materials were tested for low temperature (-20 ℃) and room temperature Izod impact strength (notched) according to GB1843-80 using a cantilever impact tester.
Part of performance indexes of the composite environment-friendly plastic particles are shown in the following table 1, and the composite environment-friendly plastic particles have good mechanical properties, and the impact strength, the tensile strength and the bending strength respectively reach 155.4J/m, 34.8MPa and 53.3 MPa. Meanwhile, the degradable polyester film has good degradation performance and good environmental protection property.
TABLE 1 mechanical Properties of the composite Environment-friendly Plastic particles of the present invention
Claims (7)
1. A preparation method of composite environment-friendly plastic particles is characterized by comprising the following steps: the method comprises the following steps:
(1) putting high-purity zinc particles into a tubular quartz furnace, pumping out air in the reaction furnace, and slowly and uniformly filling Ar/O2Mixing the gas;
(2) heating to 900 deg.C for 2 min to generate a large amount of white fog-like smoke at the furnace mouth, and cooling to obtain cotton filament-like powder to obtain ZnO nanorod;
(3) adding deionized water and isopropanol into ZnO nanorod, adjusting pH to be =9 by using ammonia water, dropwise adding ethyl orthosilicate under stirring, and reacting for 24-26h under stirring at 30-35 ℃;
(4) washing the product with absolute ethyl alcohol to neutrality, and drying in an oven at 60-70 ℃ for 24 h;
(5) taking out and calcining at 800 ℃ to obtain a ZnO nano rod coated with silicon dioxide;
(6) preparing stable emulsion from acrylamide, an initiator aqueous solution and a toluene dispersion of a ZnO nano rod coated by silicon dioxide;
(7) dissolving polypropylene in toluene, dropwise adding the prepared emulsion into a flask, keeping the temperature for 1h, cooling and discharging to form composite polypropylene particles after dropwise adding is finished within 1 h;
(8) taking bamboo powder, and carrying out surface treatment by using a dispersing agent;
(9) premixing the treated bamboo powder and the composite polypropylene particles on a high-speed mixer;
(10) melting and blending the premix on a double-screw extruder, and extruding and granulating;
(11) drying to obtain the composite environment-friendly plastic particles.
2. The method for preparing the composite environment-friendly plastic particle as claimed in claim 1, wherein the method comprises the following steps: the mass ratio of the ZnO nanorods to the tetraethoxysilane in the step (3) is 1: 1.
3. The composite environment-friendly plastic particle and the preparation method thereof as claimed in claim 1, wherein the composite environment-friendly plastic particle comprises: the mass ratio of the polypropylene in the step (7) to the ZnO nano-rod coated by the silicon dioxide in the step (6) is 6: 1-2.
4. The method for preparing the composite environment-friendly plastic particle as claimed in claim 1, wherein the method comprises the following steps: the dispersant is polyethylene glycol 200 or polyethylene glycol 400.
5. The method for preparing the composite environment-friendly plastic particle as claimed in claim 1, wherein the method comprises the following steps: the mass ratio of the bamboo powder treated in the step (9) to the composite polypropylene particles is 1: 6-8.
6. The method for preparing the composite environment-friendly plastic particle as claimed in claim 1, wherein the method comprises the following steps: the extrusion temperature in the step (10) is 190-200 ℃.
7. The composite environment-friendly plastic particle prepared by the preparation method of the composite environment-friendly plastic particle according to claims 1-6.
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| CN114985730A (en) * | 2022-04-28 | 2022-09-02 | 中科铜都粉体新材料股份有限公司 | Preparation method of antioxidant copper powder |
| CN115491789A (en) * | 2022-06-30 | 2022-12-20 | 浙江恒逸石化研究院有限公司 | Functional parallel composite elastic fiber and preparation method thereof |
| CN114985730B (en) * | 2022-04-28 | 2024-04-30 | 中科铜都粉体新材料股份有限公司 | Preparation method of antioxidant copper powder |
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| CN114985730B (en) * | 2022-04-28 | 2024-04-30 | 中科铜都粉体新材料股份有限公司 | Preparation method of antioxidant copper powder |
| CN115491789A (en) * | 2022-06-30 | 2022-12-20 | 浙江恒逸石化研究院有限公司 | Functional parallel composite elastic fiber and preparation method thereof |
| CN115491789B (en) * | 2022-06-30 | 2024-04-05 | 浙江恒逸石化研究院有限公司 | Functional parallel composite elastic fiber and preparation method thereof |
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Application publication date: 20200724 |