Super-hydrophobic HDPE composite material and preparation method thereof

Abstract

The invention discloses a super-hydrophobic HDPE (High-Density Polyethylene) composite material and a preparation method thereof. The composite material is prepared from 60 to 90 parts of HDPE, 20 to 30 parts of polytetrafluoroethylene micro powder, 10 to 30 parts of nano particles, 0.1 to 10 parts of glass fiber, 0.1 to 1 part of antioxidant and 0.1 to 1 part of lubricant. The preparation method comprises the following steps: S1, preparing modified HDPE: modifying the surface of the HDPE by using oxygen low-temperature plasma under a vacuum condition; s2, preparation of modified glass fibers: carrying out acid washing and / or alkali washing on the glass fibers to remove pollutants on the surfaces of the glass fibers so as to obtain the modified glass fibers; s3, mixing the modified HDPE with polytetrafluoroethylene micro powder and nano particles in parts by weight, so as to obtain a premix; and S4, uniformly mixing the premix, the modified glass fiber, the antioxidant and the lubricant in parts by weight, adding the mixture into a double-screw extruder, and carrying out melt extrusion granulation to obtain the super-hydrophobic HDPE composite material.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrophobic materials, and in particular to a super-hydrophobic HDPE composite material and a preparation method thereof. Background Art

[0002] Hydrophobicity refers to the physical property that a molecule (hydrophobe) and water repel each other, and hydrophobic molecules are usually gathered into a group in water, and water then can form a very large contact angle and form water drop shape when being on the surface of hydrophobic material.Therefore, generally can use water contact angle to characterize hydrophilicity, the surface such as water contact angle is less than 90 ° is called hydrophilic surface, the surface that water contact angle is greater than 90 ° is called hydrophobic surface, and when water contact angle is greater than 150 °, then be referred to as super-hydrophobic surface. In recent years, super-hydrophobic material is because it has the characteristics such as self-cleaning, fluid drag reduction, anti-fog, anti-biological property, moisture-proof, and is widely used in many fields such as waterproof, antifouling, fluid drag reduction and efficient delivery, antenna dustproof, cable anti-icing, antibacterial, in production and life, there is broad application prospect, become one of research hotspot in novel material technology; Although the research of super-hydrophobic material has achieved greater success in preparation technology at present, but all be basically for coating or film, in other aspects practical application is not ideal, in realizing industrialization, industrialization and commercialization, also still have many problems. Therefore, the fundamental direction for the future development of superhydrophobic materials is to further improve theoretical research, design optimized surface micro-nanostructures, and prepare them using simple and practical methods to reduce preparation costs, enhance the mechanical strength of the surface, improve its durability, and extend its service life.

[0003] High-density polyethylene (HDPE) is widely used due to its low price, easy processing and excellent performance, particularly in the packaging field, where plastic materials based on HDPE are replacing or have already replaced traditional metal or glass materials. HDPE is a non-polar polymer whose molecular chains are primarily composed of carbon and hydrogen atoms. These non-polar bonds repel water, making it hydrophobic. HDPE also has a high degree of crystallinity (80% to 90%), which makes its structure more compact and less susceptible to water penetration. Furthermore, HDPE is insoluble in organic solvents at room temperature and is resistant to acids, alkalis, and various salts, with excellent chemical stability, further enhancing its hydrophobicity. Therefore, the hydrophobicity of HDPE is primarily due to its non-polar chemical structure, high crystallinity, and excellent chemical stability, giving it a certain advantage in the preparation of superhydrophobic materials.

[0004] Although high-density polyethylene (HDPE) has a natural advantage in the preparation of super-hydrophobic materials due to its inherent hydrophobic properties, there are two main factors that determine the hydrophobic properties of a material's surface: surface microstructure or roughness, and surface free energy. Therefore, generally speaking, only materials with rich surface microstructures and low surface energy can construct super-hydrophobic surfaces. However, HDPE also has the problem of poor bonding with other materials and poor surface microstructure or roughness, which to some extent restricts its application in the preparation of super-hydrophobic materials. Summary of the Invention

[0005] The present invention aims to provide a super-hydrophobic HDPE composite material and a preparation method thereof, aiming to solve the corresponding problems that currently restrict high-density polyethylene in the preparation of super-hydrophobic materials.

[0006] To achieve the above object, the present invention is achieved through the following technical solutions:

[0007] The invention provides a super-hydrophobic HDPE composite material. The composite material comprises the following components in parts by weight: 60.0-90.0 parts of HDPE, 20.0-30.0 parts of polytetrafluoroethylene powder, 10.0-30.0 parts of nanoparticles, 0.1-10.0 parts of glass fiber, 0.1-1.0 part of an antioxidant and 0.1-1.0 part of a lubricant.

[0008] Furthermore, a super-hydrophobic HDPE composite material is provided: the composite material comprises the following components in parts by weight: 70.0 to 80.0 parts of HDPE, 25.0 to 30.0 parts of polytetrafluoroethylene powder, 15.0 to 25.0 parts of nanoparticles, 3.0 to 8.0 parts of glass fiber, 0.3 to 0.8 parts of antioxidant, and 0.2 to 0.7 parts of lubricant.

[0009] Furthermore, a super-hydrophobic HDPE composite material: the HDPE is HDPE modified by low-temperature plasma.

[0010] Furthermore, a super-hydrophobic HDPE composite material: the glass fiber is a glass fiber modified by acid washing and / or alkali washing.

[0011] Furthermore, a super-hydrophobic HDPE composite material: the nanoparticles are selected from a combination of one or more of nano-scale silicon dioxide, titanium dioxide, zinc oxide, aluminum hydroxide, magnesium hydroxide, barium sulfate, and magnesium sulfate.

[0012] Furthermore, a superhydrophobic HDPE composite material: the antioxidant is selected from one or more combinations of antioxidant 1010, antioxidant 1076, antioxidant CA, antioxidant 168, antioxidant 164, antioxidant DNP, antioxidant DLTP, antioxidant TNP, antioxidant TPP and antioxidant MB.

[0013] Furthermore, a super-hydrophobic HDPE composite material: the lubricant is selected from a combination of one or more of amides, fatty acids, esters, alcohols, silicone oil, white mineral oil, fatty acid salts, paraffin, and polyethylene wax.

[0014] The present invention also provides a method for preparing a super-hydrophobic HDPE composite material, which comprises the following steps:

[0015] S1. Preparation of modified HDPE: Surface modification of HDPE using oxygen low-temperature plasma under vacuum conditions to increase the linearity and surface roughness of HDPE.

[0016] S2. Preparation of modified glass fiber: acid-washing and / or alkali-washing the glass fiber to remove pollutants on the surface of the glass fiber to obtain modified glass fiber;

[0017] S3. Premixing the modified HDPE with the polytetrafluoroethylene micropowder and nanoparticles in parts by weight to obtain a premix;

[0018] S4. Mix the premix, modified glass fiber, antioxidant and lubricant in parts by weight, add the mixture into a twin-screw extruder, and perform melt extrusion and granulation to obtain a super-hydrophobic HDPE composite material.

[0019] Specifically, the glass fiber modification process: immerse the glass fiber in deionized water (water temperature 50°C) and ultrasonically clean it for 10 to 15 minutes to remove surface grease and particulate matter, and then put it into an alkaline washing tank after rinsing; dissolve and dilute sodium hydroxide or calcium hydroxide with water in a mass ratio of 1:10, control the solution temperature at 60 to 70°C, and process for 10 to 20 minutes to effectively decompose organic pollutants. 3 to 8 wt% of sodium silicate can be added as a corrosion inhibitor to prevent excessive surface erosion; dilute nitric acid (dilute nitric acid concentration 40 to 70%) with water in a volume ratio of 1:4, and control the solution temperature at 30 to 45°C for 5 to 10 minutes to remove metal oxides, mineral deposits and surface passivation layers. About 2% of hydrofluoric acid (industrial grade, concentration 40 to 70%) can be added to enhance the reaction activity. Immediately rinse with running water at 60°C after completion, wash and dry to complete the modification.

[0020] Furthermore, a method for preparing a super-hydrophobic HDPE composite material: in step S1, the vacuum degree is 10-50 Pa, the power is 15-50 W, and the modification time is 50-100 seconds.

[0021] Furthermore, a method for preparing a superhydrophobic HDPE composite material is provided: the extrusion process parameters of the twin-screw extruder in step S4 are: zone 1 temperature 160-175°C, zone 2 temperature 170-180°C, zone 3 temperature 175-185°C, zone 4 temperature 180-190°C, zone 5 temperature 180-190°C, die head temperature 150-200°C, and main engine speed 320-400 rpm.

[0022] Beneficial effects of the present invention:

[0023] (1) The super-hydrophobic HDPE composite material of the present invention utilizes polytetrafluoroethylene with low surface energy to be blended with high-density polyethylene, and also utilizes the unique hydrophobic properties of nano-scale materials. By incorporating preferred nano-scale materials, the surface of the composite material can present a certain degree of micron-nano composite structure, so that the composite material satisfies the two main factors that determine the surface hydrophobicity of the composite material, namely, surface microstructure and low surface energy. Therefore, the super-hydrophobic HDPE composite material of the present invention achieves super-hydrophobic properties.

[0024] (2) The present invention utilizes oxygen low-temperature plasma to perform surface modification treatment on high-density polyethylene (HDPE) in the process of preparing super-hydrophobic HDPE composite materials, which can increase the linearity of HDPE and the surface roughness, and can form various polar groups such as hydroxyl, carbonyl and carboxyl groups on the surface of the material, thereby increasing the adhesion between high-density polyethylene and other substances, thereby overcoming the problem of poor bonding between high-density polyethylene and other materials. Therefore, it can remove the problems that restrict high-density polyethylene in the preparation of super-hydrophobic materials to a certain extent, thereby improving the super-hydrophobic properties of the obtained super-hydrophobic HDPE composite material.

[0025] (3) In the process of preparing the super-hydrophobic HDPE composite material, the present invention also performs acid and alkali washing on the glass fiber, which can effectively improve the surface properties of the glass fiber and enhance the bonding strength with the polymer matrix. In the glass fiber, silicon dioxide (SiO2) exists as a continuous phase, while some alkali metal oxides (such as aluminum oxide (Al2O3), magnesium oxide (MgO), sodium oxide (Na2O)) and the like are dispersed phases in the glass. These alkali metal oxides can be dissolved out by acid and alkali treatment, so that some depressions are formed on the surface of the glass fiber. When the glass fiber is compounded with the polymer matrix, the chain segments of the polymer enter these depressions, which can play a fixing role, enhance the bonding strength between the glass fiber and the polymer interface, and indirectly solve the problem of poor bonding strength between high-density polyethylene and other materials. Therefore, the bonding strength between high-density polyethylene and glass fiber can be improved by modifying the glass fiber, which is beneficial to the preparation of super-hydrophobic materials after the high-density polyethylene and glass fiber are compounded.

[0026] (4) The present invention can construct a micron-nano composite structure on the surface of high-density polyethylene by adding polytetrafluoroethylene micropowder and nanoparticles. Since the entire polymer chain of polytetrafluoroethylene is composed of carbon-fluorine bonds, the interaction between the obtained HDPE composite material and water molecules is very weak. In addition, the inertness of the fluorine atom means that it will neither form hydrogen bonds with the oxygen atoms in the water molecules nor form van der Waals forces with the hydrogen atoms in the water molecules. Therefore, the obtained HDPE composite material can exhibit excellent superhydrophobicity. DETAILED DESCRIPTION

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] This embodiment 1 provides a super-hydrophobic HDPE composite material, which includes the following components in parts by weight:

[0030] 75.0 parts of high-density polyethylene (HDPE), 28.0 parts of polytetrafluoroethylene powder, 20.0 parts of nanoparticles, 5.0 parts of glass fiber, 0.5 parts of antioxidant and 0.5 parts of lubricant;

[0031] Among them, the HDPE is HDPE modified by low-temperature plasma, the nanoparticles are nano-scale silicon dioxide (particle size 20-30nm), the glass fiber is glass fiber modified by acid washing and alkali washing, the antioxidant is antioxidant 168, and the lubricant is silicone oil.

[0032] The method for preparing the super-hydrophobic HDPE composite material provided in Example 1 comprises the following specific steps:

[0033] S1. Preparation of modified HDPE: High-density polyethylene (HDPE) was surface-modified using oxygen low-temperature plasma at a vacuum of 20.0 Pa and a power of 30.0 W for 80 seconds to increase the linearity and surface roughness of the HDPE.

[0034] S2. Preparation of modified glass fiber: acid-washing and alkali-washing the glass fiber to remove pollutants such as metal oxides, oil stains, and organic matter on the surface of the glass fiber to obtain modified glass fiber;

[0035] S3. Premixing the modified HDPE with 28.0 parts of polytetrafluoroethylene powder and 20.0 parts of nanoparticles, by weight, to obtain a premix;

[0036] S4. The obtained premix, modified glass fiber, 0.5 parts of antioxidant and 0.5 parts of lubricant are mixed uniformly by weight, and then added to a twin-screw extruder for melt extrusion and granulation to obtain a super-hydrophobic HDPE composite material; wherein the extrusion process parameters of the twin-screw extruder are: zone 1 temperature 160-175°C, zone 2 temperature 170-180°C, zone 3 temperature 175-185°C, zone 4 temperature 180-190°C, zone 5 temperature 180-190°C, die head temperature 150-200°C, and main engine speed 320-400 rpm.

[0037] Example 2

[0038] This embodiment 2 provides a super-hydrophobic HDPE composite material, which includes the following components in parts by weight:

[0039] 70.0 parts of high-density polyethylene (HDPE), 25.0 parts of polytetrafluoroethylene powder, 15.0 parts of nanoparticles, 3.0 parts of glass fiber, 0.3 parts of antioxidant and 0.2 parts of lubricant;

[0040] Among them, the HDPE is HDPE modified by low-temperature plasma, the nanoparticles are nano-scale titanium dioxide (particle size 20-30nm), the glass fiber is glass fiber modified by acid washing and alkali washing, the antioxidant is antioxidant CA, and the lubricant is polyethylene wax.

[0041] The method for preparing the super-hydrophobic HDPE composite material provided in Example 2 comprises the following specific steps:

[0042] S1. Preparation of modified HDPE: High-density polyethylene (HDPE) was surface-modified using oxygen low-temperature plasma at a vacuum of 15.0 Pa and a power of 20.0 W for 55 seconds to increase the linearity and surface roughness of the HDPE.

[0043] S2. Preparation of modified glass fiber: acid-washing and alkali-washing the glass fiber to remove pollutants such as metal oxides, oil stains, and organic matter on the surface of the glass fiber to obtain modified glass fiber;

[0044] S3. Premixing the modified HDPE with 25.0 parts of polytetrafluoroethylene powder and 15.0 parts of nanoparticles, by weight, to obtain a premix;

[0045] S4. The obtained premix, modified glass fiber, 0.3 parts of antioxidant and 0.2 parts of lubricant are mixed uniformly by weight, and then added to a twin-screw extruder for melt extrusion and granulation to obtain a super-hydrophobic HDPE composite material; wherein, the extrusion process parameters of the twin-screw extruder are: zone 1 temperature 160-175°C, zone 2 temperature 170-180°C, zone 3 temperature 175-185°C, zone 4 temperature 180-190°C, zone 5 temperature 180-190°C, head temperature 150-200°C, and main engine speed 320-400 rpm.

[0046] Example 3

[0047] This embodiment 3 provides a super-hydrophobic HDPE composite material, which includes the following components in parts by weight:

[0048] 80.0 parts of high-density polyethylene (HDPE), 30.0 parts of polytetrafluoroethylene powder, 25.0 parts of nanoparticles, 8.0 parts of glass fiber, 0.8 parts of antioxidant and 0.7 parts of lubricant;

[0049] Among them, the HDPE is HDPE modified by low-temperature plasma, the nanoparticles are nano-scale zinc oxide (particle size 20-30nm), the glass fiber is glass fiber modified by acid washing and alkali washing, the antioxidant is antioxidant 1010, and the lubricant is amide.

[0050] The method for preparing the super-hydrophobic HDPE composite material provided in Example 3 comprises the following specific steps:

[0051] S1. Preparation of modified HDPE: High-density polyethylene (HDPE) was surface-modified using oxygen low-temperature plasma at a vacuum of 45.0 Pa and a power of 50.0 W for 95 seconds to increase the linearity and surface roughness of the HDPE.

[0052] S2. Preparation of modified glass fiber: acid-washing and alkali-washing the glass fiber to remove pollutants such as metal oxides, oil stains, and organic matter on the surface of the glass fiber to obtain modified glass fiber;

[0053] S3. Premixing the modified HDPE with 30.0 parts of polytetrafluoroethylene powder and 25.0 parts of nanoparticles by weight to obtain a premix;

[0054] S4. The obtained premix, modified glass fiber, 0.8 parts of antioxidant and 0.7 parts of lubricant are mixed uniformly by weight, and then added to a twin-screw extruder for melt extrusion and granulation to obtain a super-hydrophobic HDPE composite material; wherein, the extrusion process parameters of the twin-screw extruder are: zone 1 temperature 160-175°C, zone 2 temperature 170-180°C, zone 3 temperature 175-185°C, zone 4 temperature 180-190°C, zone 5 temperature 180-190°C, head temperature 150-200°C, and main engine speed 320-400 rpm.

[0055] Example 4

[0056] This embodiment 4 provides a super-hydrophobic HDPE composite material, which includes the following components in parts by weight:

[0057] 60.0 parts of high-density polyethylene (HDPE), 20.0 parts of polytetrafluoroethylene powder, 10.0 parts of nanoparticles, 0.5 parts of glass fiber, 0.2 parts of antioxidant and 0.1 parts of lubricant;

[0058] The HDPE is HDPE modified by low-temperature plasma, the nanoparticles are nano-silicon dioxide, nano-titanium dioxide and nano-zinc oxide (particle size 20-30 nm) in a weight ratio of 1:1:1, the glass fiber is glass fiber modified by acid washing and alkali washing, the antioxidant is antioxidant TNP, and the lubricant is paraffin.

[0059] Example 5

[0060] This embodiment 5 provides a super-hydrophobic HDPE composite material, which includes the following components in parts by weight:

[0061] 90.0 parts of high-density polyethylene (HDPE), 23.0 parts of polytetrafluoroethylene powder, 30.0 parts of nanoparticles, 9.5 parts of glass fiber, 1.0 part of antioxidant and 0.9 part of lubricant;

[0062] The HDPE is HDPE modified by low-temperature plasma, the nanoparticles are nano-scale aluminum hydroxide (particle size 20-30 nm), the glass fiber is glass fiber modified by acid washing and alkali washing, the antioxidant is antioxidant TNP, and the lubricant is fatty acid.

[0063] Comparative Example 1

[0064] Comparative Example 1 provides a HDPE composite material. The difference between Comparative Example 1 and Example 1 is that the HDPE is not modified in Comparative Example 1, and the other conditions are the same as those in Example 1.

[0065] Comparative Example 2

[0066] Comparative Example 2 provides a HDPE composite material. The difference between Comparative Example 2 and Example 1 is that the glass fiber is not modified in Comparative Example 2, and the rest is the same as Example 1.

[0067] Comparative Example 3

[0068] Comparative Example 3 provides a HDPE composite material. The difference between Comparative Example 3 and Example 1 is that nanoparticles are not added in Comparative Example 3, and other conditions are the same as those in Example 1.

[0069] Comparative Example 4

[0070] Comparative Example 4 provides a HDPE composite material. The difference between Comparative Example 4 and Example 1 is that glass fiber is not added in Comparative Example 4, and other conditions are the same as those in Example 1.

[0071] Comparative Example 5

[0072] Comparative Example 5 provides a HDPE composite material. The difference between Comparative Example 5 and Example 1 is that polytetrafluoroethylene powder is not added in Comparative Example 5, and other conditions are the same as those in Example 1.

[0073] Comparative Example 6

[0074] Comparative Example 6 provides a HDPE composite material. The difference between Comparative Example 6 and Example 1 is that polytetrafluoroethylene powder and nanoparticles are not added in Comparative Example 6, and other conditions are the same as those in Example 1.

[0075] test:

[0076] The HDPE composite materials obtained in Examples 1 to 5 and Comparative Examples 1 to 6 were dried at 50° C. for 24 hours and then injection molded into standard test specimens (the injection molding machine temperature was 175 to 200° C.) according to the experimental requirements. The performance test was then performed according to the standard:

[0077] (1) Notched impact strength test at room temperature (23°C): Tested in accordance with GB / T 1843. See Table 1 below for specific test results.

[0078] (2) Tensile strength and elongation at break test: The test was conducted in accordance with GB / T 1040, with a tensile rate of 20 mm / min. The specific test results are shown in Table 1 below.

[0079] (3) Flexural strength and flexural modulus test: The test was conducted in accordance with GB / T 9341. The specific test results are shown in Table 1 below.

[0080] (4) Water contact angle test: The test was conducted in accordance with the standard GB / T 30693. The specific test results are shown in Table 1 below;

[0081] (5) Water rolling angle test: The test was conducted in accordance with the standard GB / T 11665. For specific test results, see Table 1 below.

[0082] Table 1 shows the test results of the specimens made of HDPE composite materials obtained from Examples 1 to 5 and Comparative Examples 1 to 6:

[0083]

[0084]

[0085] The above preferred embodiments of the present invention are only used to explain the present invention and are not used to limit the present invention. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A super hydrophobic HDPE composite material, characterized in that: The composite material comprises the following components in parts by weight: 60.0-90.0 parts of HDPE, 20.0-30.0 parts of polytetrafluoroethylene powder, 10.0-30.0 parts of nanoparticles, 0.1-10.0 parts of glass fiber, 0.1-1.0 part of antioxidant and 0.1-1.0 part of lubricant.

2. A super hydrophobic HDPE composite material according to claim 1, characterized in that, The composite material comprises the following components in parts by weight: 70.0-80.0 parts of HDPE, 25.0-30.0 parts of polytetrafluoroethylene powder, 15.0-25.0 parts of nanoparticles, 3.0-8.0 parts of glass fiber, 0.3-0.8 parts of antioxidant and 0.2-0.7 parts of lubricant.

3. A super hydrophobic HDPE composite material according to claim 1 or 2, characterized in that, The HDPE is HDPE that has been treated with low-temperature plasma modification.

4. A super hydrophobic HDPE composite material according to claim 1 or 2, characterized in that, The glass fiber is modified by acid washing and / or alkali washing.

5. A super hydrophobic HDPE composite material according to claim 1 or 2, characterized in that, The nanoparticles are selected from one or more of nano-scale silicon dioxide, titanium dioxide, zinc oxide, aluminum hydroxide, magnesium hydroxide, barium sulfate, and magnesium sulfate.

6. A super hydrophobic HDPE composite material according to claim 1 or 2, characterized in that, The antioxidant is selected from one or more of antioxidant 1010, antioxidant 1076, antioxidant CA, antioxidant 168, antioxidant 164, antioxidant DNP, antioxidant DLTP, antioxidant TNP, antioxidant TPP, and antioxidant MB.

7. A super hydrophobic HDPE composite material according to claim 1 or 2, characterized in that, The lubricant is selected from one or more of amides, fatty acids, esters, alcohols, silicone oil, white mineral oil, fatty acid salts, paraffin, and polyethylene wax.

8. The method for preparing a super-hydrophobic HDPE composite material according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: S1. Preparation of modified HDPE: Surface modification of HDPE using oxygen low-temperature plasma under vacuum conditions to increase the linearity and surface roughness of HDPE. S2. Preparation of modified glass fiber: acid-washing and / or alkali-washing the glass fiber to remove pollutants on the surface of the glass fiber to obtain modified glass fiber; S3. Premixing the modified HDPE with the polytetrafluoroethylene micropowder and nanoparticles in parts by weight to obtain a premix; S4. Mix the premix, modified glass fiber, antioxidant and lubricant in parts by weight, add the mixture into a twin-screw extruder, and perform melt extrusion and granulation to obtain a super-hydrophobic HDPE composite material.

9. The method for preparing a super-hydrophobic HDPE composite material according to claim 8, wherein In step S1, the vacuum degree is 10-50 Pa, the power is 15-50 W, and the modification time is 50-100 seconds.

10. The method for preparing a super-hydrophobic HDPE composite material according to claim 8, wherein: The extrusion process parameters of the twin-screw extruder in step S4 are: zone 1 temperature 160-175°C, zone 2 temperature 170-180°C, zone 3 temperature 175-185°C, zone 4 temperature 180-190°C, zone 5 temperature 180-190°C, die head temperature 150-200°C, and main engine speed 320-400 rpm.

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