CN111154164B

CN111154164B - Preparation method of ultrahigh molecular weight polyethylene composite material and product thereof

Info

Publication number: CN111154164B
Application number: CN202010036874.8A
Authority: CN
Inventors: 柯扬船; 赵茜
Original assignee: China University of Petroleum Beijing
Current assignee: China University of Petroleum Beijing
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2022-02-08
Anticipated expiration: 2040-01-14
Also published as: CN111154164A

Abstract

The invention discloses an ultra-high molecular weight polyethylene composite material and a preparation method of a product thereof. The ultra-high molecular weight polyethylene composite material comprises, by mass, 70.0-99.5 wt% of ultra-high molecular weight polyethylene resin and 0.5-30.0 wt% of an auxiliary agent; wherein the molecular weight of the ultra-high molecular weight polyethylene resin is not less than 150 ten thousand; the auxiliary agent comprises 0.0-15.0 wt% of organic molecule coating treatment agent, 0.5-1.5 wt% of processing nucleation plasticizer, 0.0-5.0 wt% of processing rheological property activator, 1.0-15.0 wt% of anti-friction and abrasion agent and 0.1-1.0 wt% of anti-oxygen stabilizer. The invention also provides a preparation method of the ultra-high molecular weight polyethylene composite material product. The composite material of the invention has improved processing rheological property, and changes the problems of low molding efficiency and low product quality.

Description

Preparation method of ultrahigh molecular weight polyethylene composite material and product thereof

Technical Field

The invention relates to the technical field of engineering plastics and pipe transportation engineering materials. And more particularly, to a method for preparing an ultra-high molecular weight polyethylene composite material and a product thereof.

Background

The ultra-high molecular weight polyethylene (UHMWPE) is a special polyethylene material produced by a special polymerization process, and the UHMWPE is usually linear polyethylene with the molecular weight of more than 150 ten thousand and containing an ultra-long molecular chain and the density of 0.920-0.966 g/cm³The Vicat thermal deformation temperature is above 60 ℃ under the pressurizing test condition of 0.46MPa, and the melting point is 120-140 ℃. Compared with the existing general polyolefin or other linear polymer materials, the UHMWPE material has more excellent, higher frictional wear resistance, impact resistance, chemical acid and alkali corrosion resistance, low temperature resistance and good self-lubricating property; the UHMWPE material and the products thereof also have the advantages of relatively low surface energy, hydrophobic surface, low water absorption or non-water absorption and the like, so that the UHMWPE is often used as a thermoplastic engineering material and has difficult alternative application in the special fields and extreme environments of power electronics, automobiles, agricultural machinery, textile machinery, food machinery, building industry, paper industry, medical industry, cultural sports and the like, particularly in body armor, precision parts, oil and gas engineering machinery, gas and water supply and drainage and the like.

The ultra-high molecular weight polyethylene material is used for processing high-performance productsThe molecular weight is required to be millions, the banded ultra-long molecular chain in the high molecular chain penetrates through the whole matrix to form a high entanglement degree between molecular chains, a compact network structure and the like, and the unique molecular structure enables the UHMWPE material to generate a special molten state, namely a swelling state (which is much higher than the swelling property of the existing high polymer material) and a special high viscosity (for example, the viscosity reaches 10) at high temperature⁸Pa.s) and extremely low melt flow index (melt index MI close to 0.0), these peculiarities of UHMWPE material cause problems in industrial processing, such as very low critical shear rate, machining pressures up to 50.0MPa and above, melt fracture and hole, turtle skin on the surface of products, etc., which makes it difficult to obtain high quality materials and finished products.

The processing and other problems of the UHMWPE material are important problems of research and development and technical attack in the prior art for a long time from 1960 s to nearly 70 years, and the key points of the technical attack are about improving the processability flow and rheology of the UHMWPE material and utilizing the existing extrusion or injection molding machining forming process to produce high-performance and high-quality UHMWPE products.

The method for improving the fluidity processability of UHMWPE material in the prior art usually adopts a method for regulating and controlling the temperature interval of a processing machine, a feeding preheating, high-temperature thermal plasticizing and melting flowing area is designed, when the temperature of the processing temperature area reaches more than 250 ℃, the high-density network structure of the UHMWPE material expands or swells, few molecular chains are disentangled into coils at a very slow speed, but the molecular chain flowing and transporting amount is very small, most of UHMWPE high molecular chains are still in a frozen viscous state, and even if the UHMWPE high molecular chains are continuously subjected to gradual melting flowing at a high temperature, the molecular chain degradation rate is gradually increased, so that the UHMWPE material or product is extruded at a very low speed, and therefore, the surface of the UHMWPE material or product has a plurality of fish scales, holes and concave-convex shapes, namely, the surface morphology and the structural performance of the finished product are greatly reduced by the process for processing the UHMWPE material at a high temperature in the prior art. In contrast, in the prior art, a high-pressure extrusion method is adopted to forcibly increase the melt extrusion rate of the UHMWPE material system in the screw, but when the extrusion pressure is too high (for example, the pressure exceeds 60.0MPa), the existing processing machinery needs special steel to make the screw, so that the screw cannot be broken or other processing accidents are partially avoided, the process for ultrahigh-pressure extruding the ultrahigh-viscosity and ultralow-fluidity UHMWPE material fluid has poor feasibility and practicability, and the industry has rarely adopted the method. The prior art combines a high-temperature method and a high-pressure method for a pressing-sintering method for processing UHMWPE materials, and the problems of serious degradation phenomenon and extremely low-efficiency processing are still generated when UHMWPE products are produced.

Furthermore, the prior art adopts the method of adding general polyolefin materials with better relative fluidity, such as high-density polyethylene, low-density polyethylene, polypropylene materials or mixed materials thereof, into the UHMWPE material; in addition, lubricating materials such as stearic acids, low molecular weight polyolefin waxes, low molecular weight low surface energy additives (such as fluoride additives) are added, or a composite material of general polyolefin materials and the lubricating materials is adopted, so that the processability of the UHMWPE material is improved, however, the general polyolefin materials, the lubricating materials and the composite materials thereof cannot be well, uniformly and effectively dispersed in an UHMWPE matrix under the conditions of high temperature and high pressure, and hardly generate effective action on the ultra-long molecular chain of UHMWPE, and the additive components in the composite materials degrade or cut off the high molecular chain of the UHMWPE at high temperature and reduce the molecular weight of the UHMWPE, so that the original superior performances of the UHMWPE material, such as tensile resistance, impact resistance, surface energy, friction and wear resistance, and the like are also reduced.

The prior art discloses a formula of an ultra-high molecular weight polyethylene product and a preparation method thereof (publication No. CN101058651A, published Japanese 2007-10-24), a method for improving processing rheological property of UHMWPE material and keeping molecular weight of UHMWPE material is adopted, when an UHMWPE material composition is plasticized in a die head, incomplete plasticization can be generated on the modified UHMWPE material composition due to too small die head distance (5-10 cm) and low plasticizing temperature (lower than 200 ℃), and fluoride with lower molecular weight and extremely low addition is difficult to be uniformly dispersed in an UHMWPE molecular matrix, so far, the prior art still has difficulty in obtaining the UHMWPE material product with stable performance and difficult to prepare a pipe product with high transport performance requirement.

The ultrahigh molecular weight polyethylene material with processing fluidity and the preparation method thereof (No. CN 104045899B, No. 2016.06.01) disclosed by the prior art adopt polypropylene (PP) composition to modify the processing rheology of UHMWPE, and PEG/diatomite (glass beads) and PP auxiliary agent are utilized to form a composition system with PP to prepare UHMWPE/PP blend cut granules, the UHMWPE/PP blend cut granules have excellent mechanical property, frictional wear property and processing fluidity, and can be processed by a double screw and an injection molding machine.

The ultra-high molecular weight polyethylene composite material and the preparation method thereof (publication No. CN 106397926A, published Japanese 2017.02.15) disclosed by the prior art adopt a method of compounding molybdenum disulfide and ultra-high molecular weight polyethylene under the impact of high-speed airflow after mixing, improve the wear resistance of UHMWPE material and have simple preparation process. However, the composite material is only suitable for compression molding to obtain a composite sheet, and it is difficult to obtain a pipe suitable for transportation by an extrusion molding method.

The prior art discloses an ultra-high molecular weight polyethylene pipe and a production process thereof (publication No. CN 102675715A, published Japanese 2012.9.19). The polypropylene and the polyethylene are adopted to carry out blending modification on the ultrahigh molecular weight polyethylene, so that the ultrahigh molecular weight polyethylene pipe has excellent processing characteristics, good plasticizing effect and high production efficiency, but the added polyolefin and other additives are difficult to uniformly disperse in a base material under high temperature and high pressure in the extrusion process, and the molecular weight of UHMWPE is reduced due to the high-temperature degradation of the additives or the cutting of UHMWPE molecular chains, thereby reducing the original good tensile, impact and other properties of the ultrahigh molecular weight polyethylene.

The prior art discloses a scheme for improving the processability of an UHMWPE material by adopting the existing single-screw extrusion process, the temperature of a designed processing area is limited to 240 ℃, the processing pressure is limited to 20.0MPa, and an UHMWPE composition material is extruded once to form a pipe product, however, the extrusion speed is extremely low, the surface roughness of the extruded pipe is large, the hole distribution and the friction and wear resistance are poor, and when a very long UHMWPE pipe is extruded, the collimation degree and the uniformity of the pipe wall thickness of the extruded pipe are poor, so that the assembly problem of a lining pipe-metal pipe is caused; the prior art discloses a method for increasing the thermal deformation temperature of an UHMWPE composite material extruded tube, namely, inorganic phase materials such as glass fibers are added to improve the strength and the temperature resistance of the UHMWPE composite material, however, the long-term problems of uneven inorganic phase dispersion and difficult control of inorganic-organic phase interface action cause the thermal deformation temperature and the use temperature of a tube product to be low, and therefore, when the prepared composite material tube is used for transporting high-temperature oil-gas-water mixed fluid, the surface roughness of the tube is high and not smooth, and the problems of deposition, phase separation and crack are often generated.

Therefore, the assistant and the composition thereof in the prior art, the method for improving the processing rheological property of the UHMWPE material and the processing production efficiency of the existing extrusion machinery, do not overcome the problems of reducing the molecular weight of the original UHMWPE and losing the original excellent performance, and are difficult to prepare the high-performance high-quality UHMWPE pipe and the UHMWPE pipe used for efficiently transporting oil and gas fluid.

Aiming at the problems in the prior art, the long-chain structure and the distribution density of multiple entanglement points of an ultra-high molecular weight polyethylene molecule are researched, the internal mechanisms among the disentangled molecular chain, the folded chain crystal distribution and the difficult-to-melt property of crystals are researched, the crystal bonding difference of the macromolecular chain, the crystal nucleation growth and the melt fluidity control method are researched and disclosed, and further, the nano dispersion nucleation effect mechanism and the theoretical method in the macromolecular matrix are researched and disclosed (see Koyangshan, polymer-inorganic nano composite material, chemical industry Press, 2017, Beijing).

Therefore, the present invention provides a method for preparing an ultra-high molecular weight polyethylene composite material and a product thereof, so as to solve the above problems.

Disclosure of Invention

The invention aims to provide a preparation method of an ultrahigh molecular weight polyethylene composite material and a product thereof; the invention researches the method for disentangling the ultra-long molecular chain or reducing the molecular chain entanglement point by using a high molecular chain entanglement theory and mechanism method, provides a technology for carrying out the disentangling of the ultra-long molecular chain, synchronously activating the molecular chain migration performance and uniformly dispersing the ultra-long molecular chain melt nano-micron particles by using the multifunctional nano-micron composite auxiliary agent, overcomes the long-term problems of poor processing fluidity, difficult processing, difficult effective processing and difficult preparation of a high-quality UHMWPE material product of UHMWPE material, and improves the high temperature resistance, the frictional wear resistance, the stable size, the low flow resistance of the inner surface of the tube and the characteristics of the transported oil gas flow of the UHMWPE material product and the tube product.

In order to achieve the purpose, the invention adopts the following technical scheme:

the ultra-high molecular weight polyethylene composite material comprises the following raw material components in percentage by mass:

70.0 to 99.5 weight percent of ultra-high molecular weight polyethylene resin,

0.5wt% -30.0 wt% of auxiliary agent; wherein the content of the first and second substances,

the molecular weight of the ultra-high molecular weight polyethylene resin is not less than 150 ten thousand;

the auxiliary agent comprises the following components in percentage by mass:

preferably, the organic molecule coating treatment agent is selected from one or more of low-density polyethylene, high-density polyethylene, polypropylene, hyperbranched polyethylene, hyperbranched polypropylene resin, vinyl diethoxysilane, isopropyl diethoxysilane, polyethylene wax, silane grafted polypropylene, silane grafted rubber, silicone oil and relatively low molecular weight high molecular weight resin; wherein the molecular weight of the relatively low molecular weight high molecular weight resin is 1000-30000 or less than 100 ten thousand; the relatively low molecular weight high molecular weight resin is selected from one or more of modified low density polyethylene, modified high density polyethylene, modified polypropylene, modified hyperbranched polyethylene and modified hyperbranched polypropylene; the low-density polyethylene is preferably industrial grade low-density polyethylene, and the silicone oil is preferably industrial grade silicone oil.

Preferably, the melt flow rate of the modified polypropylene is 1g/10 min-100 g/10 min.

Preferably, the modified polypropylene is PP3800 petrochemical from Yanshan mountain in China.

Preferably, the high-density polyethylene is D5308 of high-density polyethylene (HDPE) of China petrochemical Zilustone division, the high-density polyethylene with the melt flow rate of 0.05g/10 min-3.50 g/10min of China petrochemical, 5000sPEL501 of China petrochemical Yanshan division, or the high-density polyethylene with the melt flow rate of 0.1g/10 min-1.05 g/10min of China petrochemical Yanshan division.

Preferably, the low density polyethylene is low density polyethylene petrochemical from Chinese petrochemical Yanshan mountain, low density polyethylene from Qilu petrochemical, or low density polyethylene from Yangzi petrochemical.

The organic molecule coating agent is used for treating the ultrahigh molecular weight polyethylene resin and other inorganic phase particle systems to form the ultrahigh molecular weight polyethylene composite material coated with organic molecules on the surface of the particle systems.

Preferably, in the ultra-high molecular weight polyethylene composite material, the organic molecule coating treatment agent covers the entire surface of the processing nucleation plasticizer.

Preferably, the process nucleating plasticizer comprises a nano nucleating plasticizer and/or a micro nucleating plasticizer. The processing nucleating plasticizer provided by the invention inhibits the crystal size of ultra-high molecular weight polyethylene molecules through the nano dispersion structure of the nano-micron composite particle system, and forms a more uniform crystal system through the central nano-micron nucleating template.

Preferably, the nano-nucleating plasticizer comprises silica having a particle size of 10nm to 100nm and/or carbon black having a particle size of 10nm to 100 nm.

Preferably, the micro-nucleating plasticizer is selected from one or more of diatomaceous earth having a particle size of 5 to 150 μm, glass microbeads having a particle size of 5 to 150 μm, graphite having a particle size of 5 to 150 μm, and layered silicate having a particle size of 5 to 150 μm.

Preferably, the processing rheological property activator is selected from one or any two of polytetrafluoroethylene, polyvinylidene fluoride with unsaturated bonds and ultralow surface energy fluoride; wherein the surface contact angle corresponding to the ultralow surface energy in the ultralow surface energy fluoride is 150-180 degrees. The processing rheological property activator provided by the invention not only generates an effect of activating an ultra-long molecular chain in a composite material, but also generates an effect of activating the molecular chain or disentangling the molecular chain in situ in an ultra-high molecular weight polyethylene chain; in addition, when the addition amount of the processing rheological property activator is very small, a layer of dynamic lubricating film is formed between the metal surfaces and the materials at a machine barrel, a screw rod and a mouth die of a processing machine by controlling the dispersion and migration properties of the nano-micron particle composite system, so that the effects of reducing extrusion resistance, reducing energy consumption, improving the surface smoothness of a product and reducing the surface fluid friction resistance are achieved; further, the ultra-low surface energy fluoride is preferably an industrial grade ultra-low surface energy fluoride.

Preferably, the preparation method of the ultra-low surface energy fluoride comprises the following steps:

adding aqueous solution of heptafluorobutyric acid into aqueous solution of diethylenetriamine for fluorination reaction, heating to 20-100 ℃ after the reaction is carried out for 8-24 h, and obtaining the ultralow surface energy fluoride.

Preferably, the concentration of the aqueous solution of the heptafluorobutyric acid is 1 mol/L-5 mol/L; the concentration of the aqueous solution of diethylenetriamine is 1 to 2 mol/L.

Preferably, the volume ratio of the aqueous solution of heptafluorobutyric acid to the aqueous solution of diethylenetriamine is 1 to 3: 1.

preferably, the anti-friction and wear agent is selected from one or more of graphite, molybdenum disulfide, polyethylene wax, calcium stearate and zinc stearate. The boiling point of the anti-friction and anti-abrasion agent provided by the invention is higher than the processing temperature of the ultra-high molecular weight polyethylene; in addition, the boiling point of the anti-friction and anti-wear agent may or should be higher than the processing temperature of the ultra-high molecular weight polyethylene.

Preferably, the antioxidant stabilizer is selected from one or two of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (i.e., antioxidant 1010), triester 2, 4-di-tert-butylphenyl) phosphite (i.e., antioxidant 168) and aryl phosphate. The antioxidant stabilizer provided by the invention and the mixed nucleating effect of the processing nucleating plasticizer jointly regulate and control the crystallization performance of the ultrahigh molecular weight polyethylene composite material.

Preferably, the particle size of the antioxidant stabilizer is not more than 50 μm.

As another aspect of the present invention, the present invention further provides a preparation method of the above ultra-high molecular weight polyethylene composite material, comprising the steps of:

1) mixing the ultra-high molecular weight polyethylene resin and the auxiliary agent in proportion to obtain a mixture;

2) and extruding the mixture by a single-screw extruder, and carrying out preheating, plasticizing and melt extrusion to obtain the ultrahigh molecular weight polyethylene composite material.

Preferably, step 1) further comprises the step of drying the mixture; further, the drying condition is that the drying time is 2-4 h at 70-90 ℃, water in the mixture is removed, and the mixture with the water content of less than 0.1% is formed.

Preferably, the extrusion temperature of the single-screw extruder in the step 2) is 100-245 ℃, and the extrusion pressure is 15.0-35.0 MPa.

As a further aspect of the present invention, the present invention also provides an ultra-high molecular weight polyethylene composite article comprising the above ultra-high molecular weight polyethylene composite.

Preferably, the ultra-high molecular weight polyethylene composite product is an ultra-high molecular weight polyethylene composite pipe.

As another aspect of the present invention, the present invention further provides a method for preparing the above ultra-high molecular weight polyethylene composite material product, comprising the following steps:

I) mixing the ultra-high molecular weight polyethylene resin and the auxiliary agent in proportion to obtain a mixture;

II) adding the mixture into a single-screw extruder, and carrying out preheating, plasticizing, melting, die head sizing, cooling, stretching, shaping and solidifying to obtain the ultra-high molecular weight polyethylene composite material product.

Preferably, the extrusion temperature of the single-screw extruder in the step II) is 100-245 ℃, and the extrusion pressure is 15.0-35.0 MPa.

In addition, unless otherwise specified, any range recited herein includes any value between the endpoints and any sub-range defined by any value between the endpoints or any value between the endpoints.

The invention has the following beneficial effects:

(1) the processing rheological property of the ultra-high molecular weight polyethylene composite material provided by the invention is obviously improved, and the problems of extremely low molding efficiency and low quality of molded products in the prior art of pressing-sintering molding are solved;

(2) the ultra-high molecular weight polyethylene product provided by the invention is continuously, efficiently and massively molded, and keeps excellent mechanical and frictional wear properties of the ultra-high molecular weight polyethylene, so that the material has the characteristics of high wear resistance, high impact resistance, good self-lubricating property, excellent chemical corrosion resistance and the like.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 shows the preparation of the F-amine obtained in example 1 of the invention¹H-NMR chart.

FIG. 2 shows the preparation of the F-amine obtained in example 1 of the invention¹⁹F-NMR chart.

Detailed Description

In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

In the invention, the preparation method is a conventional method if no special description is provided; the starting materials used are commercially available from published sources unless otherwise specified.

Example 1

The embodiment provides a preparation method of an ultralow surface energy fluoride of a processing rheological activator, which comprises the following steps:

dropwise adding 10ml of 1mol/L aqueous solution of heptafluorobutyric acid into 10ml of 1mol/L aqueous solution of diethylenetriamine to start a fluorination reaction through the reaction of carboxyl and amino, gradually heating to 100 ℃ after the reaction is carried out for 8 hours, evaporating water generated by the reaction to generate fluorinated amine (F-amine), namely the ultra-fluorinated amineLow surface energy fluorides of¹H-NMR chart and¹⁹the F-NMR chart is shown in FIG. 1 and FIG. 2.

Example 2

The embodiment provides an ultrahigh molecular weight polyethylene composite material, which comprises the following components in parts by weight:

the molecular weight of the ultra-high molecular weight polyethylene M2 used in the embodiment is 200-300 ten thousand, and is produced by Beijing Yanshan petrochemical company;

the anti-friction and anti-wear agent is a mixture of zinc stearate/calcium stearate (mass ratio is 1:5), graphite and molybdenum disulfide, wherein the mass ratio of the zinc stearate to the calcium stearate is 2.5:1: 1;

the nucleating plasticizer is a mixture of diatomite with 150 mu m particle size and graphite with 50 mu m particle size in a mass ratio of 0.5: 1;

the processing rheology activator was the ultra low surface energy fluoride generated in example 1, i.e., F-amine;

the antioxidant stabilizer is a mixture of antioxidant 1010 and antioxidant 168 with the mass ratio of 1: 1.

The embodiment also provides a preparation method of the ultrahigh molecular weight polyethylene composite material, which comprises the following steps:

1) adding the ultra-high molecular weight polyethylene M2, an antiwear agent, a nucleating agent, an activator and a stabilizer into a mixer according to the parts by mass, and fully mixing to obtain a mixed material;

2) adding the mixed material into a single-screw extruder, preheating, plasticizing and melt-extruding the material under the extrusion temperature of 100-245 ℃, the pressure of 15.0-30.0 MPa and the screw propelling action to obtain the ultra-high molecular weight polyethylene composite material, and testing the melt index (testing condition: 230-245 ℃, load 21.6kg, cutting interval 240s), see table 1.

The embodiment also provides a preparation method of the ultrahigh molecular weight polyethylene composite pipe comprising the ultrahigh molecular weight polyethylene composite material, which comprises the following steps:

I) adding the ultra-high molecular weight polyethylene M2, an antiwear agent, a nucleating agent, an activator, a coating agent and a stabilizer into a mixer according to the parts by mass, and fully mixing to obtain a mixed material;

II) adding the mixed material into a single screw extruder, preheating the plasticized material under the extrusion temperature of 100-245 ℃, the pressure of 15.0-30.0 MPa and the screw propelling action, melting the plasticized material in a selected size mold, cooling, solidifying, drafting and continuously processing the melted material in a shaping section to form an ultra-high molecular weight polyethylene composite material pipe with the pipe inner diameter of 64.5mm and the wall thickness of 6.3mm, extruding and inserting the pipe into the preheated metal pipe by adopting external force pre-reducing extrusion, and forming a composite pipe stably assembled by the metal pipe and the lining pipe in a manner of releasing prestress in the metal pipe, wherein the composite pipe is used for transporting crude oil and pumping crude oil underground, and the performance of the ultra-high molecular weight polyethylene composite material pipe is shown in Table 4.

Example 3

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 2, and the preparation method is the same as that in embodiment 2, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 42.5mm and the wall thickness of 3.44mm is formed in the step II); the properties are shown in Table 5.

Example 4

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 2, and the preparation method is the same as that in embodiment 2, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 44.7mm and the wall thickness of 3.52mm is formed in the step II); the properties are shown in Table 6.

Example 5

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 2, and the preparation method is the same as that in embodiment 2, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 63.5mm and the wall thickness of 6.25mm is formed in the step II); the properties are shown in Table 6.

Example 6

the anti-friction and anti-wear agent is polyethylene wax with the molecular weight of 2000-3000;

the nucleating plasticizer is graphite with the granularity of 150 mu m;

the processing rheological property activator is a mixture of polytetrafluoroethylene and polyvinylidene fluoride with unsaturated bonds in a mass ratio of 50: 50;

the organic molecule coating treating agent is a mixture of PP380 of China petrochemical Yanshan petrochemical and industrial-grade vinyl diethoxy silane in a mass ratio of 1: 1;

1) adding the ultra-high molecular weight polyethylene M2, an antiwear agent, a nucleating agent, an activator, a coating agent and a stabilizer into a mixer according to the parts by mass, and fully mixing to obtain a mixed material;

II) adding the mixed material into a single screw extruder, preheating the plasticized material under the extrusion temperature of 100-245 ℃, the pressure of 15.0-30.0 MPa and the screw propelling action, melting the plasticized material in a selected size mold, cooling, solidifying, drafting and continuously processing the melted material in a shaping section to form an ultra-high molecular weight polyethylene composite material pipe with the pipe inner diameter of 66.5mm and the wall thickness of 6.5mm, extruding and inserting the pipe into the preheated metal pipe by adopting external force pre-reducing extrusion, and forming a composite pipe stably assembled by the metal pipe and the lining pipe in a manner of releasing prestress in the metal pipe, wherein the composite pipe is used for transporting crude oil and pumping crude oil underground, and the performance of the ultra-high molecular weight polyethylene composite material pipe is shown in Table 4.

Example 7

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 6, and the preparation method is the same as that in embodiment 6, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 44.5mm and the wall thickness of 3.44mm is formed in the step II); the properties are shown in Table 5.

Example 8

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 6, and the preparation method is the same as that in embodiment 6, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 44.0mm and the wall thickness of 3.36mm is formed in the step II); the properties are shown in Table 6.

Example 9

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 6, and the preparation method is the same as that in embodiment 6, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 62.9mm and the wall thickness of 6.56mm is formed in the step II); the properties are shown in Table 6.

Example 10

the anti-friction and anti-wear agent is a mixture of zinc stearate and calcium stearate in a mass ratio of 1: 5;

the nucleating plasticizer comprises graphite particles with the granularity of 50 mu m and SiO with the granularity of 50nm in a mass ratio of 10:1₂A mixture of particles;

the organic molecule coating treating agent is a mixture of silane coupling agent and silane grafted polyethylene with the mass ratio of 1: 1;

the antioxidant stabilizer is antioxidant 1010.

2) adding the mixed material into a single-screw extruder, preheating, plasticizing and melt-extruding the material under the extrusion temperature of 110-240 ℃, the pressure of 15.0-30.0 MPa and the screw propelling action to obtain the ultra-high molecular weight polyethylene composite material, and testing the melt index (testing condition: 230-245 ℃, load 21.6kg, cutting interval 240s), see table 2.

II) adding the mixing material into a single screw extruder, preheating the plasticized material under the extrusion temperature of 110-240 ℃, the pressure of 15.0-30.0 MPa and the screw propulsion action, melting the plasticized material in a mould with selected size, cooling, solidifying, drafting and continuously processing the melted material in a shaping section to form an ultra-high molecular weight polyethylene composite material pipe with the pipe inner diameter of 65.0mm and the wall thickness of 6.7mm, extruding and inserting the pipe into the preheated metal pipe by adopting external force pre-reducing extrusion, and forming a composite pipe stably assembled by the metal pipe and the lining pipe in a manner of releasing prestress in the metal pipe, wherein the composite pipe is used for transporting crude oil and pumping crude oil underground, and the performance of the ultra-high molecular weight polyethylene composite material pipe is shown in Table 4.

Example 11

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 10, and the preparation method is the same as that in embodiment 10, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 43.0mm and the wall thickness of 3.47mm is formed in the step II); the properties are shown in Table 5.

Example 12

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 10, and the preparation method is the same as that in embodiment 10, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 44.4mm and the wall thickness of 3.33mm is formed in the step II); the properties are shown in Table 6.

Example 13

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 10, and the preparation method is the same as that in embodiment 10, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 63.2mm and the wall thickness of 6.60mm is formed in the step II); the properties are shown in Table 6.

Example 14

the molecular weight of the ultra-high molecular weight polyethylene M2 used in the embodiment is 200-300 ten thousand, and is produced by Beijing Yanshan Hecheng company;

the anti-friction and anti-wear agent is a mixture of 50-micron-sized calcium stearate and 2000-3000-molecular-weight polyethylene wax, wherein the mass ratio of the calcium stearate to the polyethylene wax is 0.8: 1;

the nucleating plasticizer is lamellar silicate particles with the particle size of 50 mu m;

the processing rheological property activator is industrial polytetrafluoroethylene;

the organic molecule coating treating agent is a mixture of industrial polypropylene resin, an organic silane coupling agent and silane grafted polypropylene in a mass ratio of 7:1: 2;

the antioxidant stabilizer is a mixture of antioxidant 1010 and (2, 4-di-tert-butylphenyl) phosphite triester in a mass ratio of 1: 1.

2) adding the mixed material into a single-screw extruder, preheating, plasticizing and melt-extruding the material under the extrusion temperature of 110-240 ℃, the pressure of 15.0-30.0 MPa and the screw propelling action to obtain the ultra-high molecular weight polyethylene composite material, and testing the melt index (testing condition: 230-245 ℃, load 21.6kg, cutting interval 240s), see table 2. The embodiment also provides a preparation method of the pipe comprising the ultrahigh molecular weight polyethylene composite material, which comprises the following steps:

II) adding the mixing material into a single screw extruder, preheating the plasticized material under the extrusion temperature of 110-240 ℃, the pressure of 15.0-30.0 MPa and the screw propulsion action, melting the plasticized material in a mould with selected size, cooling, solidifying, drafting and continuously processing the melted material in a shaping section to form an ultra-high molecular weight polyethylene composite material pipe with the pipe inner diameter of 65.3mm and the wall thickness of 6.5mm, extruding and inserting the pipe into the preheated metal pipe by adopting external force pre-reducing extrusion, and forming a composite pipe stably assembled by the metal pipe and the lining pipe in a manner of releasing prestress in the metal pipe, wherein the composite pipe is used for transporting crude oil and pumping crude oil underground, and the performance of the ultra-high molecular weight polyethylene composite material pipe is shown in Table 4.

Example 15

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 14, and the preparation method is the same as that in embodiment 14, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 43.3mm and the wall thickness of 3.45mm is formed in the step II); the properties are shown in Table 5.

Example 16

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 10, and the preparation method is the same as that in embodiment 14, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 45.4mm and the wall thickness of 3.55mm is formed in the step II); the properties are shown in Table 6.

Example 17

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 10, and the preparation method is the same as that in embodiment 10, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 63.0mm and the wall thickness of 6.32mm is formed in the step II); the properties are shown in Table 6.

Example 18

The embodiment provides an ultra-high molecular weight polyethylene composite material, which comprises the following components in percentage by mass:

the anti-friction and anti-wear agent is a mixture of polyethylene wax and calcium stearate in a mass ratio of 0.9: 0.5;

the nucleating plasticizer is SiO with the granularity of 50nm and the mass ratio of 1:1:5₂A mixture of particles, carbon black of 20nm particle size and layer silicate of 60 μm particle size;

the processing rheological property activator is polytetrafluoroethylene and polyvinylidene fluoride with the mass ratio of 1: 1;

the organic molecule coating treating agent is a mixture of D5308 of China petrochemical Azilu petrochemical company, polypropylene resin and silane grafted polypropylene in a mass ratio of 6:6: 1;

the antioxidant stabilizer is antioxidant 1010.

2) adding the mixed material into a single-screw extruder, preheating, plasticizing and melt-extruding the material under the extrusion temperature of 110-245 ℃, the pressure of 15.0-35.0 MPa and the screw propelling action to obtain the ultra-high molecular weight polyethylene composite material, and testing the melt index (testing condition: 230-245 ℃, load 21.6kg, cutting interval 240s), see table 3.

II) adding the mixed material into a single screw extruder, preheating the plasticized material under the extrusion temperature of 110-245 ℃, the pressure of 15.0-35.0 MPa and the screw propelling action, melting the plasticized material in a mould with selected size, cooling, solidifying, drafting and continuously processing the melted material in a shaping section to form an ultra-high molecular weight polyethylene composite material pipe with the pipe inner diameter of 64.0mm and the wall thickness of 6.6mm, extruding and inserting the pipe into the preheated metal pipe by adopting external force pre-reducing extrusion, and forming a composite pipe stably assembled by the metal pipe and the lining pipe in a manner of releasing prestress in the metal pipe, wherein the composite pipe is used for transporting crude oil and pumping crude oil underground, and the performance of the ultra-high molecular weight polyethylene composite material pipe is shown in Table 4.

Example 19

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 18, and the preparation method is the same as that in embodiment 18, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 44.0mm and the wall thickness of 3.43mm is formed in the step II); the properties are shown in Table 5.

Example 20

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 18, and the preparation method is the same as that in embodiment 18, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 43.8mm and the wall thickness of 3.36mm is formed in the step II); the properties are shown in Table 6.

Example 21

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 18, and the preparation method is the same as that in embodiment 18, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 63.5mm and the wall thickness of 6.20mm is formed in the step II); the properties are shown in Table 6.

Example 22

the anti-friction and anti-wear agent is a mixture of 0.9 part of polyethylene wax and 2.5 parts of calcium stearate and zinc stearate with the mass ratio of 5: 1;

the nucleating plasticizer is SiO with the granularity of 50nm and the mass ratio of 1:3:4₂A mixture of particles, graphite of 150 μm particle size and layer silicate of 60 μm particle size;

the organic molecule coating treating agent is a mixture of 5000sPEL501 and silane grafted polypropylene of China petrochemical Yanshan division with the mass ratio of 6: 1;

the antioxidant stabilizer is antioxidant 1010.

II) adding the mixed material into a single screw extruder, preheating the plasticized material under the extrusion temperature of 110-245 ℃, the pressure of 15.0-35.0 MPa and the screw propulsion action, melting the plasticized material in a selected size die, cooling, solidifying, drafting and continuously processing the melted material in a shaping section to form an ultrahigh molecular weight polyethylene composite material pipe with the specification of 65.2mm of pipe inner diameter and 6.1mm of wall thickness, extruding and inserting the pipe into the preheated metal pipe by adopting external force pre-reducing extrusion, and forming the composite pipe stably assembled by the metal pipe and the lining pipe in a mode of releasing prestress in the metal pipe, wherein the composite pipe is used for transporting crude oil and pumping crude oil out of an underground oil pumping unit, and the performance of the ultrahigh molecular weight polyethylene composite material pipe is shown in Table 4.

Example 23

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 22, and the preparation method is the same as that in embodiment 22, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 43.3mm and the wall thickness of 3.45mm is formed in the step II); the properties are shown in Table 5.

Example 24

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 22, and the preparation method is the same as that in embodiment 22, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 43.5mm and the wall thickness of 3.34mm is formed in the step II); the properties are shown in Table 6.

Example 25

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 22, and the preparation method is the same as that in embodiment 22, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 63.1mm and the wall thickness of 6.38mm is formed in the step II); the properties are shown in Table 6.

Example 26

the molecular weight of the ultra-high molecular weight polyethylene M3 used in the embodiment is 300-400 ten thousand, and is produced by Beijing Yanshan Hecheng company;

the organic molecule coating treating agent is a mixture of industrial hyperbranched polyethylene and silane grafted polypropylene with a mass ratio of 6: 1;

I) adding the ultra-high molecular weight polyethylene M3, an antiwear agent, a nucleating agent, an activator, a coating agent and a stabilizer into a mixer according to the parts by mass, and fully mixing to obtain a mixed material;

II) adding the mixing material into a single screw extruder, preheating the plasticized material under the extrusion temperature of 110-245 ℃, the pressure of 15.0-35.0 MPa and the screw propelling action, melting in a mould with selected size, cooling, solidifying, drafting and continuously processing in a shaping section to form an ultra-high molecular weight polyethylene composite material pipe with the pipe inner diameter of 65.9mm and the wall thickness of 6.4mm, extruding and inserting the pipe into the preheated metal pipe by adopting external force pre-reducing extrusion, and forming a composite pipe stably assembled by the metal pipe and the lining pipe in a manner of releasing prestress in the metal pipe, wherein the composite pipe is used for transporting crude oil and pumping crude oil underground, and the performance of the ultra-high molecular weight polyethylene composite material pipe is shown in Table 4.

Example 27

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 26, and the preparation method is the same as that in embodiment 26, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 43.1mm and the wall thickness of 3.40mm is formed in the step II); the properties are shown in Table 5.

Example 28

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 26, and the preparation method is the same as that in embodiment 26, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 43.9mm and the wall thickness of 3.40mm is formed in the step II); the properties are shown in Table 6.

Example 29

The embodiment provides a preparation method of an ultrahigh molecular weight polyethylene composite pipe, the components of the ultrahigh molecular weight polyethylene composite pipe in the ultrahigh molecular weight polyethylene composite pipe are the same as those in embodiment 26, and the preparation method is the same as that in embodiment 26, except that the ultrahigh molecular weight polyethylene composite pipe with the pipe inner diameter of 63.4mm and the wall thickness of 6.40mm is formed in the step II); the properties are shown in Table 6.

Comparative example 1

The comparative example provides an ultra-high molecular weight polyethylene powder, which is the ultra-high molecular weight polyethylene M2 of Beijing Yanshan petrochemical company, a medium petrochemical group, and the test evaluation execution standard Q/SH 3155003-charge 2018.

Comparative example 2

The comparative example provides ultra-high molecular weight polyethylene powder which is ultra-high molecular weight polyethylene M3 of a petrochemical company, and the test evaluation execution standard Q/SH 3155003-2018.

Test example 1

The samples of examples 2 to 8 and comparative examples 1 to 2 were tested for heat distortion temperature under load according to the state and industry-related standards of performance, with an applied bending stress of 0.45 MPa; the vicat softening point of the test specimen was measured under the test conditions of a120 method with the applied force of 10N.

The main performance index tests respectively implement the following national standards:

the results are shown in tables 4 to 6.

Table 1 melt index of ultra high molecular weight polyethylene composites of example 2 and example 6

TABLE 2 melt index of ultra high molecular weight polyethylene composites of example 10 and example 14

Table 3 melt indices of ultra high molecular weight polyethylene composites of example 18, example 22 and example 26

TABLE 4 product Performance test results

TABLE 5 product Performance test results

TABLE 6 product Performance test results

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.

Claims

1. The ultra-high molecular weight polyethylene composite material is characterized by comprising the following raw material components in percentage by mass:

70.0-99.5 wt% of ultra-high molecular weight polyethylene resin,

0.5wt% -30.0 wt% of an auxiliary agent; wherein the content of the first and second substances,

the auxiliary agent comprises the following components in percentage by mass of the ultra-high molecular weight polyethylene composite material:

0.0wt% -15.0 wt% of organic molecule coating treating agent,

0.5wt% -1.5 wt% of processing nucleation plasticizer,

0.1-5.0 wt% of processing rheological property activator,

1.0-15.0 wt% of anti-friction and anti-wear agent,

and 0.1wt% -1.0 wt% of an antioxidant stabilizer;

the processing rheological property activator is ultralow surface energy fluoride, a surface contact angle corresponding to ultralow surface energy in the ultralow surface energy fluoride is 150-180 degrees, and the preparation method of the ultralow surface energy fluoride comprises the following steps: adding aqueous solution of heptafluorobutyric acid into aqueous solution of diethylenetriamine for fluorination reaction, and heating to 20-100 ℃ after the reaction is carried out for 8-24 h to obtain the ultralow surface energy fluoride;

the processing nucleating plasticizer comprises a nano nucleating plasticizer and/or a micron nucleating plasticizer, the nano nucleating plasticizer comprises silicon dioxide with the particle size of 10 nm-100 nm and/or carbon black with the particle size of 10 nm-100 nm, and the micron nucleating plasticizer is graphite with the particle size of 5 mu m-150 mu m and/or layered silicate with the particle size of 5 mu m-150 mu m.

2. The ultra-high molecular weight polyethylene composite material according to claim 1, wherein the organic molecule coating treatment agent is selected from one or more of low density polyethylene, high density polyethylene, polypropylene, hyperbranched polyethylene, hyperbranched polypropylene resin, vinyl diethoxysilane, isopropyl diethoxysilane, silane grafted polypropylene, silane grafted rubber.

3. The ultra-high molecular weight polyethylene composite material according to claim 1, wherein the organic molecule coating treatment agent is selected from a relatively low molecular weight high molecular weight resin, wherein the molecular weight of the relatively low molecular weight high molecular weight resin is 1000 to 30000;

the relatively low molecular weight high molecular weight resin is selected from one or more of modified low density polyethylene, modified high density polyethylene, modified polypropylene, modified hyperbranched polyethylene and modified hyperbranched polypropylene.

4. The ultra high molecular weight polyethylene composite according to claim 1, wherein the organic molecule coating treatment agent is selected from relatively low molecular weight high molecular weight resins, wherein the relatively low molecular weight high molecular weight resins have a molecular weight of less than 100 ten thousand; the relatively low molecular weight high molecular weight resin is selected from one or more of modified low density polyethylene, modified high density polyethylene, modified polypropylene, modified hyperbranched polyethylene and modified hyperbranched polypropylene.

5. The ultra-high molecular weight polyethylene composite material according to any one of claims 1 and 3 to 4, wherein the organic molecule coating treatment agent covers the entire surface of the processing nucleation plasticizer in the ultra-high molecular weight polyethylene composite material.

6. The ultra-high molecular weight polyethylene composite material according to claim 1, wherein the concentration of the aqueous solution of heptafluorobutyric acid is 1-5 mol/L; the concentration of the aqueous solution of diethylenetriamine is 1 to 2 mol/L.

7. The ultrahigh molecular weight polyethylene composite material according to any one of claims 1 to 6, wherein the volume ratio of the aqueous solution of heptafluorobutyric acid and the aqueous solution of diethylenetriamine is 1 to 3: 1.

8. the ultra-high molecular weight polyethylene composite material according to claim 1, wherein the anti-friction and wear agent is selected from one or more of graphite, molybdenum disulfide, polyethylene wax, calcium stearate, zinc stearate.

9. The ultra-high molecular weight polyethylene composite material according to claim 1, wherein the antioxidant stabilizer is one or two selected from the group consisting of pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], and triesters of (2, 4-di-tert-butylphenyl) phosphite.

10. A method for preparing an ultra-high molecular weight polyethylene composite material according to any one of claims 1 to 9, comprising the steps of:

11. The method for preparing the ultra-high molecular weight polyethylene composite material according to claim 10, wherein the extrusion temperature of the single screw extruder in the step 2) is 100 ℃ to 245 ℃, and the extrusion pressure is 15.0MPa to 35.0 MPa.

12. An ultra high molecular weight polyethylene composite article comprising the ultra high molecular weight polyethylene composite of any one of claims 1 to 9.

13. A method of making the ultra high molecular weight polyethylene composite article of claim 12, comprising the steps of:

II) adding the mixture into a single-screw extruder, and carrying out preheating, plasticizing, melting, die head sizing and cooling, stretching, shaping and solidifying to obtain the ultra-high molecular weight polyethylene composite material product.

14. The preparation method of claim 13, wherein the single-screw extruder in the step II) has an extrusion temperature of 100 ℃ to 245 ℃ and an extrusion pressure of 15.0MPa to 35.0 MPa.