CN110564035A - Ultrahigh molecular weight polyethylene composite material and preparation method thereof - Google Patents
Ultrahigh molecular weight polyethylene composite material and preparation method thereof Download PDFInfo
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- CN110564035A CN110564035A CN201910712601.8A CN201910712601A CN110564035A CN 110564035 A CN110564035 A CN 110564035A CN 201910712601 A CN201910712601 A CN 201910712601A CN 110564035 A CN110564035 A CN 110564035A
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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
- C08L23/06—Polyethene
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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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/068—Ultra high molecular weight polyethylene
Abstract
The invention relates to the technical field of high polymer materials, in particular to an ultrahigh molecular weight polyethylene composite material and a preparation method thereof, wherein the ultrahigh molecular weight polyethylene composite material comprises the following raw materials: ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene, a lubricant, a coupling agent and carbon nanotubes; the raw materials comprise the following components in parts by mass: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube; mixing and stirring prepared ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene and a lubricant, adding a flow modifier for stirring after fully stirring, and finally adding a coupling agent for treating the carbon nano tube and the nucleating agent for stirring and forming; the blend is molded and used for manufacturing through an extruder or a die, and the properties of wear resistance, stretching, impact resistance and the like of the blend can be improved through the scheme.
Description
Technical Field
the invention relates to the technical field of high polymer materials, in particular to an ultrahigh molecular weight polyethylene composite material and a preparation method thereof.
Background
Polyethylene is one of the most widely used and productive synthetic resins, and is mainly used in various aspects of industrial and agricultural production and human life. Polyethylene is of various types, and can be classified into: low molecular weight polyethylene, normal molecular weight polyethylene, and ultra high molecular weight polyethylene. The ultra-high molecular weight polyethylene is a thermoplastic engineering plastic with the molecular weight of more than 150 ten thousand, a linear structure, excellent friction resistance, impact resistance, self-lubrication, chemical resistance, low temperature resistance, sanitation, innocuity, high tensile strength and the like.
When the ultra-high molecular weight polyethylene is used as a matrix to prepare the composite material, the ultra-high molecular weight polyethylene, the filler and the processing aid are mixed and subjected to hot press molding to form the composite material. At present, the ultrahigh molecular weight polyethylene composite material in the market has the problems of poor mechanical property, wear resistance, tensile property, impact property and the like. Therefore, the problem is solved by providing an ultrahigh molecular weight polyethylene composite material and a preparation method thereof.
Disclosure of Invention
the invention aims to provide an ultrahigh molecular weight polyethylene composite material and a preparation method thereof, so as to solve the problems in the background technology.
in order to achieve the purpose, the invention provides the following technical scheme:
An ultra-high molecular weight polyethylene composite material comprises the following raw materials: the polyethylene with ultrahigh molecular weight, the polyethylene with high density, the polyethylene with low density, a lubricant, a coupling agent, a carbon nano tube, a nucleating agent and a flow modifier are prepared from the following raw materials in parts by mass: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube.
Preferably, the nucleating agent is one or more of benzoic acid, sodium oxalate and diatomite.
Preferably, the flow modifier is one or more of paraffin wax or paraffin wax extract, polyethylene wax and aliphatic polyester. Wherein, the dosage of the solid paraffin or the paraffin extract is less than 10 percent; polyethylene wax, the dosage is less than 15%.
Preferably, the coupling agent is titanate.
Preferably, the method comprises the following steps:
s1, preparing the required material: ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene, a lubricant, a coupling agent, a carbon nanotube, a nucleating agent and a flow modifier;
S2, selecting according to the mass parts: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube;
S3, mixing and stirring the prepared ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene and lubricant, adding the flow modifier for stirring after fully stirring, and finally adding the carbon nano tube and the nucleating agent for stirring after treating by the coupling agent;
And S4, molding with an extruder or a die.
Preferably, in the step S3, the ultra-high molecular weight polyethylene, the high density polyethylene, the low density polyethylene and the lubricant are mixed and stirred at a temperature of 60 ℃ to 80 ℃ for 5 to 15 minutes.
Preferably, the flow modifier is added in the step S3 and then stirred at a high speed for 10 to 15 minutes.
preferably, the carbon nanotubes in step S3 are ground before use, treated with a coupling agent, and then added and stirred at a high speed for 5-8 minutes.
Preferably, the temperature inside the extruder in step S4 is 120 to 130 ℃.
Compared with the prior art, the invention has the beneficial effects that:
In the invention, one or more of benzoic acid, sodium oxalate and diatomite are selected as the nucleating agent, and the crystallization degree of PE can be improved by the forming nucleating agent, so that the PE forms a large number of small and uniform crystal spheres, thus the performances of wear resistance, stretching, impact resistance and the like of the blend are improved in a moving way, the flow modifier adopts solid paraffin or paraffin extract with the dosage of less than 10 percent and polyethylene wax with the dosage of less than 15 percent, and aliphatic polyester, the selection standard of the flow modifier is good dispersibility, compatibility with ultra-high molecular weight polyethylene and good thermal stability, and the surfaces of the carbon nano tube and the nucleating agent can be modified by the coupling agent.
Detailed Description
the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
The invention provides a technical scheme that:
An ultra-high molecular weight polyethylene composite material comprises the following raw materials: the polyethylene with ultrahigh molecular weight, the polyethylene with high density, the polyethylene with low density, a lubricant, a coupling agent, a carbon nano tube, a nucleating agent and a flow modifier are prepared from the following raw materials in parts by mass: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube.
the nucleating agent is one or more of benzoic acid, sodium oxalate and diatomite.
The flow modifier is one or more of solid paraffin or paraffin extract (less than 10 percent), polyethylene wax (less than 15 percent) and aliphatic polyester.
The coupling agent is titanate.
The method comprises the following steps:
S1, preparing the required material: ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene, a lubricant, a coupling agent, a carbon nanotube, a nucleating agent and a flow modifier;
S2, selecting according to the mass parts: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube;
s3, mixing and stirring the prepared ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene and lubricant, adding the flow modifier for stirring after fully stirring, and finally adding the carbon nano tube and the nucleating agent for stirring after treating by the coupling agent;
And S4, molding with an extruder or a die.
And in the step S3, mixing and stirring the ultrahigh molecular weight polyethylene, the high density polyethylene, the low density polyethylene and the lubricant at the temperature of 60-80 ℃ for 5-15 minutes.
And (S3) adding the flow modifier, and then stirring at a high speed for 10-15 minutes.
And in the step S3, the carbon nano tubes are ground before use, treated by a coupling agent with a nucleating agent, and then added and stirred at a high speed for 5-8 minutes.
In the step S4, the temperature inside the extruder is 120 to 130 ℃.
one or more of benzoic acid, sodium oxalate and diatomite is selected as the nucleating agent, the crystallinity of the PE can be improved due to the formed nucleating agent, and a large number of small and uniform crystal spheres are formed on the PE, so that the performances of wear resistance, stretching, impact resistance and the like of the blend are improved in a moving way, the flow modifier adopts solid paraffin or paraffin extract with the dosage of less than 10 percent and polyethylene wax with the dosage of less than 15 percent, and aliphatic polyester, the selection standard of the flow modifier is good in dispersibility, compatibility with ultrahigh molecular weight polyethylene and good in thermal stability, and the surfaces of the carbon nano tube and the nucleating agent can be modified by the coupling agent.
The internal temperature of the S4 extruder is 120-130 ℃.
Example 1: preparing required materials: the polyethylene comprises ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene, a lubricant, a coupling agent and a carbon nano tube, and comprises the following raw materials in parts by mass: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube, wherein the nucleating agent is selected from benzoic acid and sodium oxalate (1:1), the flow modifier is selected from solid paraffin, polyethylene wax and aliphatic polyester (1:1.5:8), the coupling agent is selected from titanate, the prepared ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene and lubricant are mixed and stirred at the temperature of 60-80 ℃ for 5-15 minutes, and after full stirring, adding a flow modifier, stirring at a high speed for 10-15 minutes, grinding the carbon nano tube before use, treating the carbon nano tube with a nucleating agent through a coupling agent, adding the mixture, stirring at a high speed for 5-8 minutes, molding, and molding through an extruder or a die.
example 2: preparing required materials: the polyethylene comprises ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene, a lubricant, a coupling agent and a carbon nano tube, and comprises the following raw materials in parts by mass: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube, wherein the nucleating agent is diatomite (1:1:2), the flow modifier is aliphatic polyester, the coupling agent is titanate, the prepared ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene and lubricant are mixed and stirred at the temperature of 40-60 ℃ for 5-15 minutes, the flow modifier is added for high-speed stirring for 5-10 minutes after the mixture is fully stirred, the carbon nano tube is ground before use, the nucleating agent is treated by the coupling agent and then added for high-speed stirring for 5 minutes, the mixture is molded, and the product is molded and manufactured by an extruder or a mold.
Example 3: preparing required materials: the polyethylene comprises ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene, a lubricant, a coupling agent and a carbon nano tube, and comprises the following raw materials in parts by mass: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 1 part of lubricant, 10 parts of nucleating agent, 15 parts of flow modifier, 3 parts of coupling agent and 8 parts of carbon nano tube, wherein the nucleating agent is benzoic acid, sodium oxalate and diatomite (1:1:2), the flow modifier is paraffin extract, polyethylene wax and aliphatic polyester (1:1.5:8), the coupling agent is titanate, the prepared ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene and lubricant are mixed and stirred at the temperature of 60-80 ℃ for 5-15 minutes, and after full stirring, adding a flow modifier, stirring at a high speed for 10-15 minutes, grinding the carbon nano tube before use, treating the carbon nano tube with a nucleating agent through a coupling agent, adding the mixture, stirring at a high speed for 5-8 minutes, molding, and molding through an extruder or a die.
To sum up, in the embodiment 3, 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 1% of lubricant, 10 parts of nucleating agent, 15 parts of flow modifier, 3 parts of coupling agent and 8 parts of carbon nano tube are adopted, and the mixture of the ultrahigh molecular weight polyethylene, the high density polyethylene, the low density polyethylene and the lubricant is stirred at the temperature of 60-80 ℃ for 5-15 minutes, after the mixture is fully stirred, the flow modifier is added for high-speed stirring for 10-15 minutes, before the carbon nano tube is used, the mixture is ground, the nucleating agent is treated by the coupling agent, and then the mixture is added for high-speed stirring for 5-8 minutes, so that the blend has better performances such as wear resistance, stretching performance, impact performance and the like, and the flow modifier adopts paraffin extract, polyethylene wax and aliphatic polyester, can be compatible with the ultrahigh molecular weight polyethylene and has.
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The ultra-high molecular weight polyethylene composite material is characterized by comprising the following raw materials: the polyethylene with ultrahigh molecular weight, the polyethylene with high density, the polyethylene with low density, a lubricant, a coupling agent, a carbon nano tube, a nucleating agent and a flow modifier are prepared from the following raw materials in parts by mass: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube.
2. The ultra-high molecular weight polyethylene composite material as claimed in claim 1, wherein the nucleating agent is selected from one or more of benzoic acid, sodium oxalate and diatomite.
3. the ultra-high molecular weight polyethylene composite material as claimed in claim 1, wherein the flow modifier is one or more selected from paraffin wax or paraffin wax extract, polyethylene wax, and aliphatic polyester.
4. the ultra-high molecular weight polyethylene composite material according to claim 1, wherein the coupling agent is selected from titanate.
5. The preparation method of the ultra-high molecular weight polyethylene is characterized by comprising the following steps:
S1, preparing the required material: ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene, a lubricant, a coupling agent, a carbon nanotube, a nucleating agent and a flow modifier;
S2, selecting according to the mass parts: 100 parts of ultrahigh molecular weight polyethylene, 30 parts of high density polyethylene, 30 parts of low density polyethylene, 0.5-1 part of lubricant, 5-10 parts of nucleating agent, 5-15 parts of flow modifier, 0.5-3 parts of coupling agent and 0.5-8 parts of carbon nano tube;
S3, mixing and stirring the prepared ultrahigh molecular weight polyethylene, high density polyethylene, low density polyethylene and lubricant, adding the flow modifier for stirring after fully stirring, and finally adding the carbon nano tube and the nucleating agent for stirring after treating by the coupling agent;
And S4, molding with an extruder or a die.
6. The method of claim 5, wherein the mixing of the ultra-high molecular weight polyethylene, the high density polyethylene, the low density polyethylene and the lubricant at 60-80 ℃ for 5-15 minutes in step S3 is performed.
7. The method of claim 5, wherein the step S3 is performed by high speed stirring for 10-15 minutes after the flow modifier is added.
8. the method of claim 5, wherein the carbon nanotubes in step S3 are ground before use, treated with a coupling agent, and then added and stirred at high speed for 5-8 minutes.
9. the method of claim 1, wherein the temperature inside the extruder in step S4 is 120-130 ℃.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111875867A (en) * | 2020-08-12 | 2020-11-03 | 胜利新大新材料股份有限公司 | Modified resin for composite material base plate and preparation method thereof |
| CN112521674A (en) * | 2020-11-24 | 2021-03-19 | 胜利新大新材料股份有限公司 | High-temperature-resistant ultrahigh molecular weight polyethylene composite material, pipe and preparation method thereof |
| CN113121861A (en) * | 2021-03-16 | 2021-07-16 | 厦门卡德莱新材料有限公司 | Method for improving hydrophilicity of ultra-high molecular weight polyethylene product |
| CN113234268A (en) * | 2021-03-17 | 2021-08-10 | 浙江晟祺实业有限公司 | Composite reinforced high-density polyethylene material and preparation method thereof |
| CN113292775A (en) * | 2021-05-21 | 2021-08-24 | 浙江晟祺实业有限公司 | Injection molding grade ultra-high molecular weight polyethylene material and preparation method thereof |
| CN114507388A (en) * | 2022-03-03 | 2022-05-17 | 广东金发科技有限公司 | High-wear-resistance barrier moisture-permeable material and preparation method and application thereof |
| CN116444877A (en) * | 2023-02-15 | 2023-07-18 | 郑州大学 | Nano magnesium oxide modified polyethylene nanocomposite and preparation method thereof |
| WO2024003060A1 (en) * | 2022-07-01 | 2024-01-04 | Sabic Global Technologies B.V. | Polymer composition comprising uhmwpe and hdpe |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111875867A (en) * | 2020-08-12 | 2020-11-03 | 胜利新大新材料股份有限公司 | Modified resin for composite material base plate and preparation method thereof |
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| WO2024003060A1 (en) * | 2022-07-01 | 2024-01-04 | Sabic Global Technologies B.V. | Polymer composition comprising uhmwpe and hdpe |
| CN116444877A (en) * | 2023-02-15 | 2023-07-18 | 郑州大学 | Nano magnesium oxide modified polyethylene nanocomposite and preparation method thereof |
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