CN114381113A - Preparation method of self-lubricating high-wear-resistance fluorine-containing polymer alloy - Google Patents
Preparation method of self-lubricating high-wear-resistance fluorine-containing polymer alloy Download PDFInfo
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Abstract
The invention discloses a preparation method of a self-lubricating high-wear-resistance fluorine-containing polymer alloy, which comprises the following steps that nylon is selected as a base polymer resin raw material for a resin base material; selecting one or more materials of PTFE and silicon compounds to carry out compounding to prepare a modified additive package; selecting carbon fiber, aramid fiber, graphite, HDPE and ultrahigh molecular weight polyethylene as fillers; atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition of vacuum degree; premixing the lubricating wear-resistant modified material and the reinforced modified material, compounding the lubricating wear-resistant modified material and the resin powder, mixing the materials by a premixer, and blending, extruding and granulating the materials by a double-screw extruder. The high-strength high-modulus polyethylene lubricating material is compounded by adopting graphite, carbon fiber, a high-strength high-modulus polyethylene reinforcing material, PTFE and a silicone lubricating material, can generate an obvious synergistic effect, and can improve the lubricating and wear-resisting properties of the high-molecular alloy under the condition of low addition of the filler.
Description
Technical Field
The invention belongs to the technical field of high-performance polymer alloy materials, and particularly relates to a preparation method of a self-lubricating high-wear-resistance fluorine-containing polymer alloy.
Background
Self-lubricating means that the material has high surface tension, and relative sliding or microcracks are generated when the material is pressed or rubbed by external force, and the stress is transferred, so that the friction loss of the material is reduced. The self-lubricating high-wear-resistance material has wide application in real life and production. Especially in the case of some components which are subjected to frequent stress, such materials are often used to increase the lifetime of the device. For example, the application in the fields of vehicles, mechanical bearings and the like is wide.
The prior art product is mainly realized by adding PTFE and silicone oil, however, the existing preparation technology for the self-lubricating high-wear-resistant polymer material has the defects of complex operation, uncontrollable process, limited performance promotion space and incapability of meeting the requirements of the existing production and use.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made keeping in mind the above and/or other problems occurring in the prior art.
Therefore, the invention aims to overcome the defects in the prior art and provide a preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy.
In order to solve the technical problems, the invention provides the following technical scheme: a process for preparing the self-lubricating antiwear fluoric high-molecular alloy includes such steps as proportionally mixing the raw materials,
selection of resin base material: the resin base material is nylon as a base high polymer resin raw material;
selecting lubricating wear-resistant modified materials: selecting one or more materials of PTFE and silicon compounds to carry out compounding to prepare a modified additive package;
selection of a reinforced modified material: selecting carbon fiber, aramid fiber, graphite, HDPE and ultrahigh molecular weight polyethylene as fillers;
carrying out surface modification on the reinforced modified material: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition of vacuum degree;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material, compounding with resin powder, mixing by a premixer, and blending, extruding and granulating by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the matrix polymer resin material comprises one or more of PA6, PA66, PA46, PPA, POM, ETFE and PBT.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the mass proportion of the base material in the self-lubricating high-wear-resistance polymer alloy is 50-90%.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the lubricating wear-resistant modified material is prepared from PTFE powder and a silicon compound in a liquid or solid state.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the lubricating wear-resistant modified material is prepared by premixing PTFE and a silicon compound in a mass ratio of 1: 4-4: 1, wherein the PTFE and the silicon compound account for 5-20% of the content of the self-lubricating high wear-resistant polymer alloy after mixing.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the reinforcing modified material comprises one or more of carbon fiber, aramid fiber, graphite, HDPE and ultrahigh molecular weight polyethylene, the filling material is in a powder shape or a short fiber shape, the particle size of the powder is 50-500nm, the length-diameter ratio of the short fiber is 1: 10-1: 100, and the diameter is 100-2000 mu m.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the reinforced modified material is added into the polymer alloy in a proportion of 5-35%.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the surface modification of the reinforced modified material comprises the following steps,
atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition of keeping a certain vacuum degree, so as to increase the compatibility of the reinforced modified material with other systems, wherein the vacuum degree is 0-0.01 MPa, and the temperature is 20-120 ℃.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the surface modifier comprises methyl silicone oil, polydimethylsiloxane and polycyclomethyl siloxane, and the using amount of the surface modifier is 0.1-3% of the mass of the reinforced modified material.
As a preferred scheme of the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy, the preparation method comprises the following steps: the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy comprises the steps of preparing a self-lubricating high-wear-resistance polymer alloy, wherein the mixing rotating speed of a premixer is 200-600 r/min, the working temperature is normal temperature, the double-screw extrusion processing temperature is 220-275 ℃, the working efficiency is 1-10 MHZ, and extruding, water cooling, chopping and drying are carried out through a machine head to obtain the self-lubricating high-wear-resistance polymer alloy material.
The invention has the beneficial effects that:
the reinforcing material can improve the binding force and compatibility with the self-lubricating high-wear-resistance material after surface modification by the silicon surfactant, and is beneficial to the preparation of a high-molecular alloy material and the improvement of the lubricating wear-resistance.
The high-strength high-modulus polyethylene lubricating material is compounded by adopting graphite, carbon fiber, a high-strength high-modulus polyethylene reinforcing material, PTFE and a silicone lubricating material, so that an obvious synergistic effect can be generated, the lubricating and wear-resisting properties of the high-molecular alloy can be improved under the condition of low addition of the filler, and the cost is reduced.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, specific embodiments thereof are described in detail below with reference to examples of the specification.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1:
selection of resin base material: PA6 is selected as a matrix polymer resin raw material of the resin base material, and the content is 90%; the lubricating wear-resistant modified material is PTFE, and the addition amount is 5%; the reinforcing modified material selects carbon fiber short fiber, and the addition amount is 5%;
and (3) carrying out surface modification on the reinforced modified material, selecting polydimethylsiloxane as a surface modifier, wherein the use amount is 1% of that of the carbon fiber: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition that the vacuum degree is 0.01 MPa;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material by a premixer at the rotating speed of 400r/min for 30min, then compounding the lubricating wear-resistant modified material and resin powder, mixing the resin powder and the resin powder by the premixer at the rotating speed of 400r/min for 20min, and performing blending, extrusion and granulation by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material, wherein the double-screw power is 6Hz, and the processing temperature is 235 ℃.
Self-lubricating performance is detected by referring to the standard GB/T3903.2-2008, the length of a grinding crack is 3mm, and the mechanical strength is increased by 5%.
Example 2:
selection of resin base material: PA6 is selected as a matrix polymer resin raw material of the resin base material, and the content is 85%; the lubricating wear-resistant modified material is PTFE, and the addition amount is 5%; the reinforcing modified material selects carbon fiber short fiber, and the addition amount is 10%;
and (3) carrying out surface modification on the reinforced modified material, selecting polydimethylsiloxane as a surface modifier, wherein the use amount is 1% of that of the carbon fiber: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition that the vacuum degree is 0.01 MPa;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material by a premixer at the rotating speed of 400r/min for 30min, then compounding the lubricating wear-resistant modified material and resin powder, mixing the resin powder and the resin powder by the premixer at the rotating speed of 400r/min for 20min, and performing blending, extrusion and granulation by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material, wherein the double-screw power is 6Hz, and the processing temperature is 235 ℃.
Self-lubricating performance is detected by referring to the standard GB/T3903.2-2008, the length of a grinding crack is 2.7mm, and the mechanical strength is increased by 8%.
Example 3:
selection of resin base material: PA6 is selected as a matrix polymer resin raw material of the resin base material, and the content is 75%; the lubricating wear-resistant modified material is PTFE, and the addition amount is 5%; the reinforcing modified material selects carbon fiber short fiber, and the addition amount is 20%;
and (3) carrying out surface modification on the reinforced modified material, selecting polydimethylsiloxane as a surface modifier, wherein the use amount is 1% of that of the carbon fiber: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition that the vacuum degree is 0.01 MPa;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material by a premixer at the rotating speed of 400r/min for 30min, then compounding the lubricating wear-resistant modified material and resin powder, mixing the resin powder and the resin powder by the premixer at the rotating speed of 400r/min for 20min, and performing blending, extrusion and granulation by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material, wherein the double-screw power is 6Hz, and the processing temperature is 235 ℃.
Self-lubricating performance is detected by referring to the standard GB/T3903.2-2008, the length of a grinding crack is 2.2mm, and the mechanical strength is increased by 26%.
Example 4:
selection of resin base material: PA6 is selected as a matrix polymer resin raw material of the resin base material, and the content is 65%; the lubricating wear-resistant modified material is PTFE, and the addition amount is 5%; the reinforcing modified material selects carbon fiber short fiber, and the addition amount is 30%;
and (3) carrying out surface modification on the reinforced modified material, selecting polydimethylsiloxane as a surface modifier, wherein the use amount is 1% of that of the carbon fiber: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition that the vacuum degree is 0.01 MPa;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material by a premixer at the rotating speed of 400r/min for 30min, then compounding the lubricating wear-resistant modified material and resin powder, mixing the resin powder and the resin powder by the premixer at the rotating speed of 400r/min for 20min, and performing blending, extrusion and granulation by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material, wherein the double-screw power is 6Hz, and the processing temperature is 235 ℃.
Self-lubricating performance is detected by referring to the standard GB/T3903.2-2008, the length of a grinding crack is 2.1mm, and the mechanical strength is increased by 28%.
Example 5:
selection of resin base material: PA6 is selected as a matrix polymer resin raw material of the resin base material, and the content is 60%; the lubricating wear-resistant modified material is PTFE, and the addition amount is 5%; the reinforcing modified material selects carbon fiber short fiber, and the addition amount is 35%;
and (3) carrying out surface modification on the reinforced modified material, selecting polydimethylsiloxane as a surface modifier, wherein the use amount is 1% of that of the carbon fiber: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition that the vacuum degree is 0.01 MPa;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material by a premixer at the rotating speed of 400r/min for 30min, then compounding the lubricating wear-resistant modified material and resin powder, mixing the resin powder and the resin powder by the premixer at the rotating speed of 400r/min for 20min, and performing blending, extrusion and granulation by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material, wherein the double-screw power is 6Hz, and the processing temperature is 235 ℃.
Self-lubricating performance is detected by referring to the standard GB/T3903.2-2008, the length of a grinding crack is 2.1mm, and the mechanical strength is increased by 30%.
In this case, the mechanical strength of the polymer system is not increased much by further increasing the carbon fiber, and the abrasion resistance is not improved at all, so that the carbon fiber is preferably added in an amount of 20% by weight.
Example 6:
selection of resin base material: PA6 is selected as a matrix polymer resin raw material of the resin base material, and the content is 70%; the lubricating wear-resistant modified material is PTFE, and the addition amount is 10%; the reinforcing modified material selects carbon fiber short fiber, and the addition amount is 20%;
and (3) carrying out surface modification on the reinforced modified material, selecting polydimethylsiloxane as a surface modifier, wherein the use amount is 1% of that of the carbon fiber: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition that the vacuum degree is 0.01 MPa;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material by a premixer at the rotating speed of 400r/min for 30min, then compounding the lubricating wear-resistant modified material and resin powder, mixing the resin powder and the resin powder by the premixer at the rotating speed of 400r/min for 20min, and performing blending, extrusion and granulation by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material, wherein the double-screw power is 6Hz, and the processing temperature is 235 ℃.
Self-lubricating performance is detected by reference to the standard GB/T3903.2-2008, the length of a grinding crack is 2.0mm, and the mechanical strength is increased by 28%.
Example 7:
selection of resin base material: PA6 is selected as a matrix polymer resin raw material of the resin base material, and the content is 65%; the lubricating wear-resistant modified material is PTFE, and the addition amount is 15%; the reinforcing modified material selects carbon fiber short fiber, and the addition amount is 20%;
and (3) carrying out surface modification on the reinforced modified material, selecting polydimethylsiloxane as a surface modifier, wherein the use amount is 1% of that of the carbon fiber: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition that the vacuum degree is 0.01 MPa;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material by a premixer at the rotating speed of 400r/min for 30min, then compounding the lubricating wear-resistant modified material and resin powder, mixing the resin powder and the resin powder by the premixer at the rotating speed of 400r/min for 20min, and performing blending, extrusion and granulation by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material, wherein the double-screw power is 6Hz, and the processing temperature is 235 ℃.
Self-lubricating performance is detected by reference to the standard GB/T3903.2-2008, the length of a grinding crack is 2.0mm, and the mechanical strength is increased by 31%.
The wear resistance is improved slightly by continuously increasing PTFE, the strength is slightly improved, the synergistic effect between the lubricating material and the reinforcing material is verified, and in consideration of cost, the addition amount of PTFE is preferably 10%.
Example 9:
selection of resin base material: PA6 is selected as a matrix polymer resin raw material of the resin base material, and the content is 75%; the lubricating wear-resistant modified material is selected from PTFE and silicone, and the addition amount is 5 percent; the reinforced modified material selects carbon fiber short fiber and graphite, the adding amount of the carbon fiber is 15%, and the adding amount of the graphite is 5%;
and (3) carrying out surface modification on the reinforced modified material, selecting polydimethylsiloxane as a surface modifier, wherein the use amount is 1% of that of the carbon fiber: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition that the vacuum degree is 0.01 MPa;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material by a premixer at the rotating speed of 400r/min for 30min, then compounding the lubricating wear-resistant modified material and resin powder, mixing the resin powder and the resin powder by the premixer at the rotating speed of 400r/min for 20min, and performing blending, extrusion and granulation by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material, wherein the double-screw power is 6Hz, and the processing temperature is 235 ℃.
Self-lubricating performance is detected by reference to the standard GB/T3903.2-2008, the length of a grinding crack is 1.4mm, and the mechanical strength is increased by 38%. Under a compound system, the mechanical strength and the wear resistance are improved.
The graphite is a flaky two-dimensional structure, the carbon fiber is a fibrous one-dimensional structure, and the two different structures are distributed in the resin to form a cross point and form a stress dispersion point/surface, so that a good reinforcing effect is achieved; and the high-modulus polyethylene that excels in passes through the later stage and adds, and here HDPE is fibrous structure, and the screw rod is close to discharge gate department and adds and can not destroy its fibrous structure, and its organic structure has increased the compatibility with the resin, has formed the inside skeleton texture of resin with graphite and the carbon fiber that adds earlier stage, plays the effect of supporting the reinforcing.
The silicone lubricant and PTFE have the synergistic effect that PTFE is insoluble powder, has a 0-dimensional structure in a system, is distributed around the one-dimensional structure and the two-dimensional structure to form cross points, has a further reinforcing function, has good compatibility with the silicone lubricant, and brings the silicone lubricant to the surfaces of graphite and carbon fibers, so that the lubricating and wear-resisting properties are improved.
The invention provides a preparation technology of a high polymer alloy for greatly improving self-lubricating property by researching the synergistic effect between reinforced materials such as high-strength high-modulus polyethylene, graphite and the like and PTFE and silicone lubricating materials, and can meet the requirements of current and future production and use.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A preparation method of a self-lubricating high-abrasion-resistance fluorine-containing polymer alloy is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
selection of resin base material: the resin base material is nylon as a base high polymer resin raw material;
selecting lubricating wear-resistant modified materials: selecting one or more materials of PTFE and silicon compounds to carry out compounding to prepare a modified additive package;
selection of a reinforced modified material: selecting carbon fiber, aramid fiber, graphite, HDPE and ultrahigh molecular weight polyethylene as fillers;
carrying out surface modification on the reinforced modified material: atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition of vacuum degree;
preparing a self-lubricating high-wear-resistance fluorine-containing polymer alloy: premixing the lubricating wear-resistant modified material and the reinforced modified material, compounding with resin powder, mixing by a premixer, and blending, extruding and granulating by a double-screw extruder to obtain the self-lubricating high-wear-resistant polymer material.
2. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy as claimed in claim 1, wherein: the matrix polymer resin material comprises one or more of PA6, PA66, PA46, PPA, POM, ETFE and PBT.
3. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy as claimed in claim 1 or 2, wherein: the mass proportion of the base material in the self-lubricating high-wear-resistance polymer alloy is 50-90%.
4. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy as claimed in claim 1 or 2, wherein: the lubricating wear-resistant modified material is prepared from PTFE powder and a silicon compound in a liquid or solid state.
5. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy as claimed in any one of claims 1, 2 and 5, wherein the method comprises the following steps: the lubricating wear-resistant modified material is prepared by premixing PTFE and a silicon compound in a mass ratio of 1: 4-4: 1, wherein the PTFE and the silicon compound account for 5-20% of the content of the self-lubricating high wear-resistant polymer alloy after mixing.
6. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy as claimed in any one of claims 1, 2 and 5, wherein the method comprises the following steps: the reinforcing modified material comprises one or more of carbon fiber, aramid fiber, graphite, HDPE and ultrahigh molecular weight polyethylene, the filling material is in a powder shape or a short fiber shape, the particle size of the powder is 50-500nm, the length-diameter ratio of the short fiber is 1: 10-1: 100, and the diameter is 100-2000 mu m.
7. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy as claimed in any one of claims 1, 2 and 5, wherein the method comprises the following steps: the reinforced modified material is added into the polymer alloy in a proportion of 5-35%.
8. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy as claimed in any one of claims 1, 2 and 5, wherein the method comprises the following steps: the surface modification of the reinforced modified material comprises the following steps,
atomizing the surface modifier by adopting an atomizing nozzle of a high-speed kneader, and carrying out surface modification on the reinforced modified material under the condition of keeping a certain vacuum degree, so as to increase the compatibility of the reinforced modified material with other systems, wherein the vacuum degree is 0-0.01 MPa, and the temperature is 20-120 ℃.
9. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy according to claim 8, wherein the self-lubricating high wear-resistant fluorine-containing polymer alloy comprises the following steps: the surface modifier comprises methyl silicone oil, polydimethylsiloxane and polycyclomethyl siloxane, and the using amount of the surface modifier is 0.1-3% of the mass of the reinforced modified material.
10. The method for preparing the self-lubricating high wear-resistant fluorine-containing polymer alloy as claimed in any one of claims 1, 2 and 5, wherein the method comprises the following steps: the preparation method of the self-lubricating high-wear-resistance fluorine-containing polymer alloy comprises the steps of preparing a self-lubricating high-wear-resistance polymer alloy, wherein the mixing rotating speed of a premixer is 200-600 r/min, the working temperature is normal temperature, the double-screw extrusion processing temperature is 220-275 ℃, the working efficiency is 1-10 MHZ, and extruding, water cooling, chopping and drying are carried out through a machine head to obtain the self-lubricating high-wear-resistance polymer alloy material.
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