CN113337031A - Preparation method of EVA special material - Google Patents
Preparation method of EVA special material Download PDFInfo
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- CN113337031A CN113337031A CN202110670602.8A CN202110670602A CN113337031A CN 113337031 A CN113337031 A CN 113337031A CN 202110670602 A CN202110670602 A CN 202110670602A CN 113337031 A CN113337031 A CN 113337031A
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- acrylic resin
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- eva
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a preparation method of an EVA special material, which comprises the following components in percentage by mass: 30-40% of ethylene-vinyl acetate resin, 11-19% of modified acrylic resin, 0.6-2.8% of lubricant, 0.2-0.7% of polytetrafluoroethylene and 1.2-3.8% of wear-resistant composition. According to the technical scheme, the montmorillonite is modified by the aminobenzoic acid through the organic acid, so that the hydrophobicity of the montmorillonite is improved, the acrylic resin is modified through the modified montmorillonite so that the hydrophobic property of the acrylic resin is further improved, and the modified acrylic resin is mixed with the ethylene-vinyl acetate resin, the lubricant, the polytetrafluoroethylene and the wear-resistant composition, so that the prepared EVA special material not only has super-strong hydrophobicity and self-cleaning property, but also has good flexibility and anti-sticking property.
Description
Technical Field
The invention belongs to the technical field of EVA materials, and particularly relates to a preparation method of an EVA special material.
Background
EVA is copolymerized from ethylene and vinyl acetate, and has the Chinese cultural name: ethylene-vinyl acetate copolymer (ethylene-vinyl acetate copolymer) and EVA have wide application fields, the annual market consumption of China is continuously increased, and the ethylene-vinyl acetate copolymer is particularly applied to soles and interior materials of medium and high-grade sneakers, climbing shoes, slippers and sandals in the shoe manufacturing industry. The method also has wide application in the field of new energy, such as photovoltaic materials, solar cell adhesives and the like. The polymerization method of EVA comprises high pressure polymerization, solution polymerization, emulsion polymerization and suspension polymerization, wherein the high pressure polymerization is mainly applied to plastic products, the solution polymerization is mainly applied to PVC processing aids, and the emulsion polymerization is mainly applied to adhesive products.
The EVA sole has good rebound resilience, high tensile strength, excellent toughness and good shock resistance and impact resistance; under the condition of low temperature, the performance still keeps excellent, and the heat preservation and cold protection effect is good; under the condition of high temperature, the heat insulation board does not deform and has good heat insulation effect; the sound insulation effect is good due to the closed foaming holes; the water-absorbing, damp-proof and water-resistant performances are good; the paint is resistant to corrosion of chemicals such as seawater, grease, acid, alkali and the like, and can be applied in various scenes; antibacterial, nontoxic, tasteless and pollution-free, and is an environment-friendly new material. However, the existing EVA shoe material does not have good self-cleaning property, and the shoe material is easy to adsorb dirt such as silt, dust and the like. If not cleaned in time, the surface of the product is easily polluted, the appearance of the product is affected, and the service life of the product is further affected. Meanwhile, the cleaning frequency of the product is increased, the labor frequency of purchasers is improved, and the purchasing desire of the product is reduced. Cause discomfort of feet and bring great trouble to regularly cleaning soles.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a preparation method of an EVA special material.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the preparation method of the EVA special material comprises the following raw materials in percentage by mass: 20-60% of ethylene-vinyl acetate resin, 10-20% of modified acrylic resin, 0.5-3% of lubricant, 0.1-0.8% of polytetrafluoroethylene and 1-4% of wear-resistant composition;
the preparation method of the EVA special material comprises the following steps:
(1) weighing raw materials according to the component proportion, putting the ethylene-vinyl acetate resin, the modified acrylic resin, the lubricant, the polytetrafluoroethylene and the wear-resistant composition into a high-speed mixer, and uniformly stirring and mixing to obtain a mixture;
(2) and putting the obtained mixture into a double-screw extruder, and carrying out melt blending at the temperature of 200-300 ℃ to obtain a finished product.
Further, the raw materials of the EVA special material comprise the following components in percentage by mass: 30-40% of ethylene-vinyl acetate resin, 11-19% of modified acrylic resin, 0.6-2.8% of lubricant, 0.2-0.7% of polytetrafluoroethylene and 1.2-3.8% of wear-resistant composition.
Further, the raw materials of the EVA special material comprise the following components in percentage by mass: the weight percentage of the ethylene-vinyl acetate resin is 32-39%, the modified acrylic resin is 12-18%, the lubricant is 0.8-1.6%, the polytetrafluoroethylene is 0.3-0.6% and the wear-resistant composition is 1.4-3.6%.
Further, the lubricant is one or more of glycerin, polyethylene wax and solid paraffin.
Further, the raw materials of the wear-resistant composition comprise the following components in parts by mass: 20-30 parts of dioctyl phthalate, 10-20 parts of isoprene rubber and 8-12 parts of epoxy resin.
Further, the preparation process of the wear-resistant composition comprises the following steps: weighing the raw materials according to the component proportion, putting dioctyl phthalate, isoprene rubber and epoxy resin into a high-speed mixer, and uniformly stirring and mixing to obtain the wear-resistant composition
Further, the raw materials of the modified acrylic resin comprise the following components in parts by weight: 10-20 parts of acrylic resin, 1-2 parts of montmorillonite and 3-5 parts of p-aminobenzoic acid.
Further, the preparation method of the modified acrylic resin comprises the following steps:
s1, weighing the raw materials according to the component ratio, placing the montmorillonite in a muffle furnace, calcining for 3-5h at the temperature of 300-350 ℃, taking out the montmorillonite, and cooling to obtain activated montmorillonite;
s2, adding deionized water into the obtained activated montmorillonite, stirring at a high speed for 1-2h at the temperature of 60-80 ℃, adding p-aminobenzoic acid, reacting for 10-15h, cooling, and filtering to obtain filter residue;
s3, fully washing the obtained filter residue with absolute ethyl alcohol, and then drying in an oven at 40-50 ℃ to obtain the modified acrylic resin.
Further, in step S2, the mass of the added deionized water is 2-3 times of the mass of the montmorillonite.
Further, in step S3, the oven drying is performed under vacuum.
The invention has the beneficial effects that:
according to the technical scheme, the montmorillonite is modified by the aminobenzoic acid through the organic acid, so that the hydrophobicity of the montmorillonite is improved, the acrylic resin is modified through the modified montmorillonite so that the hydrophobic property of the acrylic resin is further improved, and the modified acrylic resin is mixed with the ethylene-vinyl acetate resin, the lubricant, the polytetrafluoroethylene and the wear-resistant composition, so that the prepared EVA special material not only has super-strong hydrophobicity, but also has strong flexibility.
Of course, it is not necessary for any one product that embodies the invention to achieve all of the above advantages simultaneously.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
A preparation method of EVA special material comprises the following steps:
(1) weighing raw materials according to the component proportion, putting the ethylene-vinyl acetate resin, the modified acrylic resin, the lubricant, the polytetrafluoroethylene and the wear-resistant composition into a high-speed mixer, and uniformly stirring and mixing to obtain a mixture;
(2) and putting the obtained mixture into a double-screw extruder, and carrying out melt blending at the temperature of 250 ℃ to obtain a finished product.
The lubricant is one or more of glycerol, polyethylene wax and solid paraffin.
The wear-resistant composition comprises the following raw materials in parts by mass: 25 parts of dioctyl phthalate, 15 parts of isoprene rubber and 10 parts of epoxy resin;
the preparation process of the wear-resistant composition comprises the following steps: and (3) putting dioctyl phthalate, isoprene rubber and epoxy resin into a high-speed mixer, and uniformly stirring and mixing to obtain the wear-resistant composition.
The modified acrylic resin comprises the following raw materials in parts by weight: 15 parts of acrylic resin, 1.5 parts of montmorillonite and 4 parts of p-aminobenzoic acid.
The preparation method of the modified acrylic resin comprises the following steps:
s1, weighing the raw materials according to the mixture ratio, placing montmorillonite in a muffle furnace, calcining for 4 hours at 330 ℃, taking out the montmorillonite, and cooling to obtain activated montmorillonite;
s2, adding deionized water into the obtained activated montmorillonite, wherein the mass of the added deionized water is 2.5 times of that of the montmorillonite, stirring at a high speed for 1.5h at 70 ℃, adding p-aminobenzoic acid, reacting for 12h, cooling, and filtering to obtain filter residue;
and S3, fully washing the obtained filter residue with absolute ethyl alcohol, and then drying in an oven at 45 ℃ under a vacuum condition to obtain the modified acrylic resin.
Example 1
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: 20% of ethylene-vinyl acetate resin, 10% of modified acrylic resin, 0.5% of lubricant, 0.1% of polytetrafluoroethylene and 1% of wear-resistant composition.
Example 2
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: the mass percentage of the ethylene-vinyl acetate resin is 30%, the mass percentage of the modified acrylic resin is 11%, the mass percentage of the lubricant is 0.6%, the mass percentage of the polytetrafluoroethylene is 0.2%, and the mass percentage of the wear-resistant composition is 1.2%.
Example 3
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: the mass percentage of the ethylene-vinyl acetate resin is 32%, the modified acrylic resin is 12%, the lubricant is 0.8%, the polytetrafluoroethylene is 0.3% and the wear-resistant composition is 1.4%.
Example 4
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: the mass percentage of the ethylene-vinyl acetate resin is 39%, the mass percentage of the modified acrylic resin is 18%, the mass percentage of the lubricant is 1.6%, the mass percentage of the polytetrafluoroethylene is 0.6%, and the mass percentage of the wear-resistant composition is 3.6%.
Example 5
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: the mass percentage of the ethylene-vinyl acetate resin is 40%, the mass percentage of the modified acrylic resin is 19%, the mass percentage of the lubricant is 2.8%, the mass percentage of the polytetrafluoroethylene is 0.7%, and the mass percentage of the wear-resistant composition is 3.8%.
Example 6
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: 60% of ethylene-vinyl acetate resin, 20% of modified acrylic resin, 3% of lubricant, 0.8% of polytetrafluoroethylene and 4% of wear-resistant composition.
Comparative example 1
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: 20% of ethylene-vinyl acetate resin, 10% of unmodified acrylic resin, 0.5% of lubricant, 0.1% of polytetrafluoroethylene and 1% of wear-resistant composition.
Comparative example 2
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: the mass percentage of the ethylene-vinyl acetate resin is 30%, the mass percentage of the unmodified acrylic resin is 11%, the mass percentage of the lubricant is 0.6%, the mass percentage of the polytetrafluoroethylene is 0.2%, and the mass percentage of the wear-resistant composition is 1.2%.
Comparative example 3
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: the mass percentage of the ethylene-vinyl acetate resin is 32%, the mass percentage of the unmodified acrylic resin is 12%, the mass percentage of the lubricant is 0.8%, the mass percentage of the polytetrafluoroethylene is 0.3%, and the mass percentage of the wear-resistant composition is 1.4%.
Comparative example 4
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: the mass percent of the ethylene-vinyl acetate resin is 39%, the mass percent of the unmodified acrylic resin is 18%, the mass percent of the lubricant is 1.6%, the mass percent of the polytetrafluoroethylene is 0.6%, and the mass percent of the wear-resistant composition is 3.6%.
Comparative example 5
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: the mass percentage of the ethylene-vinyl acetate resin is 40%, the mass percentage of the unmodified acrylic resin is 19%, the mass percentage of the lubricant is 2.8%, the mass percentage of the polytetrafluoroethylene is 0.7%, and the mass percentage of the wear-resistant composition is 3.8%.
Comparative example 6
The preparation method of the EVA special material comprises the following raw materials in percentage by mass: 60% of ethylene-vinyl acetate resin, 20% of unmodified acrylic resin, 3% of lubricant, 0.8% of polytetrafluoroethylene and 4% of wear-resistant composition.
Now, the performance tests of examples 1 to 6 and comparative examples 1 to 6 were carried out, and the test results are shown in Table 1.
TABLE 1
As can be seen from the above table, examples 1-6 have greater tensile strength and elongation at break than comparative examples 1-6, indicating that examples 1-6 have better toughness; the adhesion is low, which shows that the material in the embodiment has better anti-sticking property and self-cleaning property.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The preparation method of the EVA special material is characterized in that the EVA special material comprises the following raw materials in percentage by mass: 20-60% of ethylene-vinyl acetate resin, 10-20% of modified acrylic resin, 0.5-3% of lubricant, 0.1-0.8% of polytetrafluoroethylene and 1-4% of wear-resistant composition;
the preparation method of the EVA special material comprises the following steps:
(1) weighing raw materials according to the component proportion, putting the ethylene-vinyl acetate resin, the modified acrylic resin, the lubricant, the polytetrafluoroethylene and the wear-resistant composition into a high-speed mixer, and uniformly stirring and mixing to obtain a mixture;
(2) and putting the obtained mixture into a double-screw extruder, and carrying out melt blending at the temperature of 200-300 ℃ to obtain a finished product.
2. The preparation method of the EVA special material according to claim 1, wherein the raw materials of the EVA special material comprise the following components in percentage by mass: 30-40% of ethylene-vinyl acetate resin, 11-19% of modified acrylic resin, 0.6-2.8% of lubricant, 0.2-0.7% of polytetrafluoroethylene and 1.2-3.8% of wear-resistant composition.
3. The preparation method of the EVA special material according to claim 2, wherein the raw materials of the EVA special material comprise the following components in percentage by mass: the weight percentage of the ethylene-vinyl acetate resin is 32-39%, the modified acrylic resin is 12-18%, the lubricant is 0.8-1.6%, the polytetrafluoroethylene is 0.3-0.6% and the wear-resistant composition is 1.4-3.6%.
4. The preparation method of the EVA special material according to claim 1, wherein the lubricant is one or more of glycerin, polyethylene wax and paraffin wax.
5. The preparation method of the EVA special material according to claim 1, wherein the raw materials of the wear-resistant composition comprise the following components in parts by mass: 20-30 parts of dioctyl phthalate, 10-20 parts of isoprene rubber and 8-12 parts of epoxy resin.
6. The preparation method of the EVA special material according to claim 5, wherein the preparation process of the wear-resistant composition comprises the following steps: weighing the raw materials according to the component proportion, putting dioctyl phthalate, isoprene rubber and epoxy resin into a high-speed mixer, and uniformly stirring and mixing to obtain the wear-resistant composition.
7. The preparation method of the EVA special material according to claim 1, wherein the modified acrylic resin comprises the following components in parts by mass: 10-20 parts of acrylic resin, 1-2 parts of montmorillonite and 3-5 parts of p-aminobenzoic acid.
8. The preparation method of the EVA special material according to claim 7, wherein the preparation method of the modified acrylic resin comprises the following steps:
s1, weighing the raw materials according to the component ratio, placing the montmorillonite in a muffle furnace, calcining for 3-5h at the temperature of 300-350 ℃, taking out the montmorillonite, and cooling to obtain activated montmorillonite;
s2, adding deionized water into the obtained activated montmorillonite, stirring at a high speed for 1-2h at the temperature of 60-80 ℃, adding p-aminobenzoic acid, reacting for 10-15h, cooling, and filtering to obtain filter residue;
s3, fully washing the obtained filter residue with absolute ethyl alcohol, and then drying in an oven at 40-50 ℃ to obtain the modified acrylic resin.
9. The method for preparing EVA special material according to claim 8, wherein in step S2, the mass of the added deionized water is 2-3 times of the mass of the montmorillonite.
10. The method for preparing EVA special material according to claim 8, wherein in step S3, the oven drying is under vacuum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110670602.8A CN113337031B (en) | 2021-06-17 | 2021-06-17 | Preparation method of EVA special material |
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| CN202110670602.8A CN113337031B (en) | 2021-06-17 | 2021-06-17 | Preparation method of EVA special material |
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| CN113337031A true CN113337031A (en) | 2021-09-03 |
| CN113337031B CN113337031B (en) | 2023-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409984A (en) * | 2021-12-21 | 2022-04-29 | 扬州罗兰新材料有限公司 | Preparation method of composite wax for EVA shoe material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015019490A1 (en) * | 2013-08-09 | 2015-02-12 | 株式会社アシックス | Sole for shoes, and shoes |
| CN106243480A (en) * | 2016-08-30 | 2016-12-21 | 联泓(江苏)新材料研究院有限公司 | A kind of EVA type resistance to tribulation combustion elastomeric material and preparation method |
| CN107082922A (en) * | 2017-05-27 | 2017-08-22 | 安徽誉林汽车部件有限公司 | A kind of automobile tire abrasion-resistant rubber material |
| CN111117049A (en) * | 2019-12-25 | 2020-05-08 | 温州欧盛鞋业股份有限公司 | Shoe with yellowing-resistant sole and preparation method thereof |
-
2021
- 2021-06-17 CN CN202110670602.8A patent/CN113337031B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015019490A1 (en) * | 2013-08-09 | 2015-02-12 | 株式会社アシックス | Sole for shoes, and shoes |
| CN106243480A (en) * | 2016-08-30 | 2016-12-21 | 联泓(江苏)新材料研究院有限公司 | A kind of EVA type resistance to tribulation combustion elastomeric material and preparation method |
| CN107082922A (en) * | 2017-05-27 | 2017-08-22 | 安徽誉林汽车部件有限公司 | A kind of automobile tire abrasion-resistant rubber material |
| CN111117049A (en) * | 2019-12-25 | 2020-05-08 | 温州欧盛鞋业股份有限公司 | Shoe with yellowing-resistant sole and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 郑新建等: "纳米材料改性丙烯酸树脂的研究进展", 《皮革与化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114409984A (en) * | 2021-12-21 | 2022-04-29 | 扬州罗兰新材料有限公司 | Preparation method of composite wax for EVA shoe material |
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