A polyphenylene ether alloy material used for impeller and preparation method thereof

Abstract

The present invention discloses a polyphenylene ether alloy material applied to an impeller and a preparation method thereof, and relates to the technical field of polymer composite material processing. The polyphenylene ether composite material disclosed in the present invention is composed of the following raw materials in parts by weight: 40 to 75 parts of polyphenylene ether resin, 20 to 45 parts of liquid crystal polymer, 1 to 10 parts of polyetheretherketone, 5 to 18 parts of toughening agent SEBS, 20 to 50 parts of glass fiber, 0.3 to 5 parts of polytetrafluoroethylene, 0.5 to 5 parts of polyethylene, 0.1 to 0.5 parts of antioxidant, 0.2 to 3 parts of lubricant, and 5 to 18 parts of compatibilizer masterbatch. The polyphenylene ether alloy material applied to an impeller provided by the present invention has the characteristics of high wear resistance, aging resistance, UV resistance, chemical corrosion resistance, buffering, vibration absorption, low inertia, low cost and long service life.

Description

Technical Field

[0001] The invention belongs to the technical field of polymer composite material processing, and in particular relates to a polyphenylene ether alloy material used for an impeller and a preparation method thereof. Background Art

[0002] As one of the world's five major general engineering plastics, polyphenylene ether (PPE) material is non-toxic, transparent, low in relative density, with excellent mechanical strength, heat resistance, flame retardancy, good dimensional stability, and outstanding electrical insulation. Its main disadvantages are poor melt fluidity, stress cracking tendency, and difficulty in processing and molding, which greatly limits its single application. Pure PPE has the disadvantages of poor melt fluidity and high price. The products sold on the market are all improved products with excellent comprehensive performance. They are widely used in gears, bearings, pump impellers, blower impellers, pipes, valves, filters, submersible pumps and other parts.

[0003] Most of the existing impellers are made of metal, which are heavy and expensive. In addition, due to environmental factors, metal impellers are prone to corrosion, wear, and loud noise. The existing polyetheretherketone (PEEK) plastic alloy impellers are expensive, resulting in high impeller costs. Some plastic alloy impellers are prone to short service life due to material reasons.

[0004] In view of the above problems, the technicians of the present invention have conducted a new study on the required properties of alloy materials based on the materials and the application fields of impellers. It is known to the technicians in this field that it is very difficult for an alloy material to have high mechanical strength, high temperature resistance, impact resistance, flame retardancy, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, tear resistance, radiation resistance and other properties at the same time, which has become the difficulty of the research and development of the present invention. Summary of the invention

[0005] The main purpose of the present invention is to provide a PPE polyphenylene ether alloy material suitable for an impeller, which has the properties of high mechanical strength, high temperature resistance, impact resistance, flame retardancy, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, tear resistance, radiation resistance, etc., low cost and long service life.

[0006] In order to achieve the purpose of the present invention, the present invention provides a PPE polyphenylene ether alloy material used for an impeller, which is composed of the following raw materials in parts by weight: 40 to 75 parts of polyphenylene ether resin, 20 to 45 parts of liquid crystal polymer, 1 to 10 parts of polyetheretherketone, 5 to 18 parts of toughening agent SEBS, 20 to 50 parts of glass fiber, 0.3 to 5 parts of polytetrafluoroethylene, 0.5 to 5 parts of polyethylene, 0.1 to 0.5 parts of antioxidant, 0.2 to 3 parts of lubricant and 5 to 18 parts of compatibilizer masterbatch.

[0007] Furthermore, the polyphenylene ether resin is any one of a copolymer resin of poly(2,6-dimethylphenyl) ether and 2,3,6-trimethylphenol, or a copolymer resin of 2,6-dimethylphenol and 2,3,6-trimethylphenol.

[0008] Furthermore, the intrinsic viscosity of the polyphenylene ether resin is 0.3 to 0.6 dl / g.

[0009] Furthermore, the compatibilizer masterbatch is composed of the following raw materials in parts by weight: 40-60 parts of polyphenylene ether PPE, 20-35 parts of polystyrene PS, 1-10 parts of aluminum oxide, 1-8 parts of toughening agent EMA, 2-8 parts of maleic anhydride MAH, 0.3-1.5 parts of initiator and 0.2-1 part of benzoin.

[0010] Furthermore, the preparation method of the compatibilizer masterbatch is: weigh the raw materials according to the weight ratio and put them into a high-speed mixer, stir them in the high-speed mixer for 2 to 5 minutes to mix them evenly, and then blend and extrude them through a twin-screw extruder, the temperature of the twin-screw extruder is 200 to 260°C, the screw speed is 35 to 55Hz, cool, cut into pellets, and obtain the compatibilizer masterbatch.

[0011] Furthermore, the lubricant is any one of pentaerythritol stearate, calcium stearate, zinc stearate, stearic acid, ethylene bisstearamide or organic silicone.

[0012] Furthermore, the antioxidant includes a primary antioxidant and an auxiliary antioxidant.

[0013] The primary antioxidant is any one of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate or 2,2-methylenebis(4-methyl-6-tert-butylphenol);

[0014] The auxiliary antioxidant includes any one of tris(nonylphenyl) phosphite or tris(2,4-di-tert-butylphenyl) phosphite.

[0015] The present invention also provides a method for preparing a polyphenylene ether alloy material for an impeller, which specifically comprises the following steps:

[0016] The raw materials are weighed according to the weight ratio, and the weighed raw materials of each component are put into a high-speed mixer. After being stirred for 2 to 5 minutes by the high-speed mixer to be evenly mixed, they are blended and extruded through a twin-screw extruder. The temperature of the twin-screw extruder is set to 240 to 300° C., the screw speed is set to 350 to 500 rpm, and the materials are cooled and pelletized to obtain a polyphenylene ether alloy material.

[0017] The present invention has achieved the following beneficial effects:

[0018] 1. The present invention uses PPE and LCP as the base material, and by adding appropriate amounts of PEEK, glass fiber and other auxiliary materials and toughening agents, under the action of compatibilizers, the obtained impeller polyphenylene ether alloy material has excellent mechanical properties, excellent heat resistance, pressure resistance, wear resistance, good toughness, strong rigidity and other advantages, and excellent comprehensive performance. Compared with metal impellers, it has the advantages of light weight, corrosion resistance, vibration absorption, low inertia, long service life and the like.

[0019] 2. Compared with the current common engineering plastic impeller, the present invention has more outstanding radiation resistance, deformation resistance, fatigue resistance and tear resistance when used at high temperature.

[0020] 3. Compared with the expensive special polyetheretherketone impeller material, the present invention has a more obvious cost advantage. Adding a certain proportion of PEEK to the alloy material not only improves the overall performance of the alloy material, but also controls the cost well. Therefore, the polyphenylene ether alloy material for the impeller of the present invention is suitable for use in any environment.

[0021] 4. The present invention can significantly improve the fluidity, high temperature resistance, super rigidity, and self-lubricating wear resistance of PPE by adding liquid crystal polymer (LCP) to the PPE system; the addition of polyetheretherketone (PEEK) significantly improves the mechanical strength, high temperature resistance, impact resistance, flame retardancy, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, and radiation resistance, and reaches 1.6mm V1 flame retardant level without adding flame retardant, and has outstanding aging resistance and tear resistance, and the service life of the product is greatly extended; the effect of aluminum oxide in the compatibilizer masterbatch is utilized to better strengthen the anti-aging effect of the product, and strengthen the tear resistance and wear resistance. The products produced by the present invention can be mainly used in the impeller fields such as oil pump impellers, windmill impellers, and water pump impellers. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The PPE polyphenylene ether alloy material used for an impeller provided by the present invention is composed of the following raw materials in parts by weight: 40 to 75 parts of polyphenylene ether resin, 20 to 45 parts of liquid crystal polymer, 5 to 20 parts of polyetheretherketone, 5 to 18 parts of toughening agent SEBS, 20 to 50 parts of glass fiber, 0.3 to 5 parts of polytetrafluoroethylene, 0.5 to 5 parts of polyethylene, 0.1 to 0.5 parts of antioxidant, 0.2 to 3 parts of lubricant and 5 to 18 parts of compatibilizer masterbatch.

[0024] In the present invention, preferably, the polyphenylene ether resin is a copolymer resin of poly(2,6-dimethylphenyl)ether and 2,3,6-trimethylphenol, or a copolymer resin of 2,6-dimethylphenol and 2,3,6-trimethylphenol; the intrinsic viscosity of the polyphenylene ether resin is 0.3-0.6dl / g. The polyphenylene ether resin in the present invention is selected from LXN040, LXN045 or LXN050 of Nantong Xingchen Synthetic Materials Co., Ltd., which has good comprehensive performance, can be used in 120-degree steam, has good wear resistance, good dimensional stability, low density, can make the product lightweight, and is a good environmentally friendly material.

[0025] The polymerization method of the liquid crystal polymer used in the present invention is mainly based on melt polycondensation. The fully aromatic LCP is often supplemented with solid phase polycondensation to obtain a high molecular weight product. It has good mechanical properties, dimensional stability, optical properties, electrical properties, chemical resistance, flame retardancy, and processability. It has good heat resistance, low thermal expansion coefficient, good weather resistance and radiation resistance, excellent flame retardancy, and outstanding corrosion resistance. LCP products will not be corroded in the presence of 90% acid and 50% alkali. They will not be dissolved after contact with industrial solvents, fuel oil, detergents and hot water, and will not cause stress cracking.

[0026] Preferably, the liquid crystal polymer used in the present invention is American Ticona A625, with a density of 1.54 g / cm 3 , the tensile modulus is 9000MPa, the flexural modulus is 10500MPa, it is a 25% graphite reinforced high crystalline material, with high temperature resistance, super rigidity, self-lubricating wear resistance, good halogen-free flame retardancy, outstanding corrosion resistance, good weather resistance, radiation resistance, etc.; it can make this alloy more outstanding in these properties.

[0027] In the present invention, polyetheretherketone PEEK is a polymer composed of repeating units containing one ketone bond and two ether bonds in the main chain structure. It belongs to a special polymer material and is an aromatic crystalline thermoplastic polymer material with high mechanical strength, high temperature resistance, impact resistance, flame retardancy, acid and alkali resistance, hydrolysis resistance, wear resistance, fatigue resistance, radiation resistance and good electrical properties. It has rigidity and flexibility, especially outstanding fatigue resistance under alternating stress, which can be comparable to metal alloy materials. Preferably, the PEEK used in the present invention is BASF A2000 from Germany, which has the advantages of high temperature resistance, excellent mechanical properties, good self-lubrication, chemical corrosion resistance, flame retardancy, peeling resistance, radiation resistance, stable insulation, hydrolysis resistance and easy processing, small mass, light load of supporting motors, etc.

[0028] The toughening agent SEBS of the present invention is a hydrogenated styrene-butadiene block copolymer resin elastomer. SEBS has excellent aging resistance, has both plasticity and high elasticity, can be processed and used without vulcanization, and scraps can be reused. It is widely used in the production of high-grade elastomers and plastic modification, and has good weather resistance, heat resistance, compression deformation resistance and excellent mechanical properties. The toughening agent SEBS added to the present invention can be better blended with PPE and auxiliary materials, and used in combination with LCP, compatibilizer masterbatch, etc., which significantly improves the compatibility between the components in the polyphenylene ether composite material, so that the present invention has good fluidity during processing, is easy to shape and process, and has good dimensional stability of the molded product, solves the problem of easy cracking of the present invention, and enables the present invention to obtain excellent mechanical properties. The present invention uses a toughening agent with an appropriate ratio to obtain excellent mechanical strength, toughness and impact resistance.

[0029] Preferably, the glass fiber is selected from Chongqing 306 short carbon fiber, with a fiber diameter of 13 μm and a length of 3 mm. The tiny fibers can be better integrated into the alloy, which greatly enhances the tensile strength of the alloy material caused by the centrifugal force when the impeller rotates at high speed, and also improves the corrosion resistance of the alloy material. The main components of the glass fiber in the present invention are silicon dioxide, aluminum oxide, calcium oxide, boron oxide, magnesium oxide, sodium oxide, etc.

[0030] Preferably, polytetrafluoroethylene (PTFE) is selected from F-104 of Daikin of Japan, which is white waxy, translucent, heat-resistant and cold-resistant, and can be used for a long time at -180 to 260° C. The addition of PTFE significantly improves the high and low temperature resistance of the present invention, and is well compatible with other components in the alloy material under the action of the compatibilizer masterbatch, and can further improve the mechanical strength of the present invention.

[0031] Preferably, polyethylene is a thermoplastic resin obtained by polymerization of ethylene, and also includes copolymers of ethylene and a small amount of α-olefins. It is odorless, non-toxic, waxy, has excellent low temperature resistance (the lowest operating temperature can reach -100 to 70°C), good chemical stability, and can withstand the corrosion of most acids and alkalis (not resistant to oxidizing acids). It is insoluble in general solvents at room temperature, has low water absorption, and has excellent electrical insulation.

[0032] Preferably, the present invention uses Sinopec LLDPE, and the use of LLDPE is to better improve the high fluidity and environmental stress cracking resistance, heat resistance and impact resistance of the alloy material.

[0033] Preferably, the lubricant is any one of pentaerythritol stearate, calcium stearate, zinc stearate, stearic acid, ethylene bis stearamide or organic silicone.

[0034] Preferably, the antioxidant includes a primary antioxidant and an auxiliary antioxidant, the primary antioxidant is any one of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] pentaerythritol ester (antioxidant 1010), β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate octadecyl ester (antioxidant 1076) or 2,2-methylenebis(4-methyl-6-tert-butylphenol) (antioxidant 2246); the auxiliary antioxidant includes any one of tris(nonylphenyl) phosphite (antioxidant TNP) or tris(2,4-di-tert-butylphenyl) phosphite (antioxidant 168).

[0035] Preferably, the compatibilizer masterbatch in the present invention is composed of the following raw materials by weight: 40-60 parts of polyphenylene ether PPE, 20-35 parts of polystyrene PS, 1-10 parts of aluminum oxide, 1-8 parts of toughening agent EMA, 2-8 parts of maleic anhydride MAH, 0.3-1.5 parts of initiator, and 0.2-1 parts of benzoin. The preparation method is: weighing the raw materials according to the weight ratio, putting the weighed raw materials of each component into a high-speed mixer, stirring the high-speed mixer for 2-5min to completely mix them, and then blending and extruding them through a twin-screw extruder, the temperature of the twin-screw extruder is 200-260°C, the screw speed is 35-55Hz, cooling, pelletizing, and obtaining the compatibilizer masterbatch.

[0036] Whether it is a metal impeller or a plastic impeller, the most common fault is easy wear, corrosion by various gases and liquids, frequent cracks and breakage, and because the metal impeller has a large specific gravity, it will produce a lot of noise when rotating at high speed. Although ordinary plastic impellers reduce noise, they have poor wear resistance, corrosion resistance, and weather resistance, and are prone to breakage. They are also flammable, easy to accumulate static electricity, and have poor thermal stability. Therefore, it is necessary to strengthen the antistatic, flame retardant, impact resistance, tensile strength, and thermal stability performance problems or defects or quality problems to avoid safety hazards. The present invention utilizes the characteristics of various materials to improve these performance defects.

[0037] The addition of aluminum oxide in the compatibilizer masterbatch increases the hardness and wear resistance of the product, greatly extending the service life of the impeller. Preferably, the aluminum oxide in the compatibilizer masterbatch of the present invention is Hengge nano aluminum oxide, HN-NL105Z white spherical particles with a diameter of 45-50um and a purity of 99%.

[0038] The present invention also provides a preparation method of a PPE polyphenylene ether alloy material used for an impeller, and the specific steps are: weighing raw materials according to the weight ratio, putting the weighed raw materials of each component into a high-speed mixer, stirring them in the high-speed mixer for 2 to 5 minutes to completely mix them, and then blending and extruding them through a twin-screw extruder, the temperature of the twin-screw extruder is set to 240 to 300°C, the screw speed is set to 350 to 500rpm, cooling, pelletizing, and obtaining the polyphenylene ether alloy material.

[0039] The polyphenylene ether (PPE) alloy material used for an impeller of the present invention will be described below in conjunction with specific embodiments.

[0040] Example 1

[0041] The preparation method of the polyphenylene ether PPE alloy material of this embodiment is as follows: weigh by mass fraction, put 45 parts of PPE, 30 parts of LCP, 2 parts of PEEK, 7 parts of toughening agent, 25 parts of glass fiber, 0.5 parts of polytetrafluoroethylene, 0.5 parts of PE, 0.2 parts of antioxidant 1010, 0.1 parts of antioxidant 168, 0.2 parts of silicone, and 5 parts of compatibilizer masterbatch into a high-speed mixer for mixing for 2 to 5 minutes, and discharge; use a twin-screw extruder for blending and granulation to obtain a PPE alloy material. The twin-screw extrusion processing temperature is 240 to 300 ° C, and the screw speed is 35 to 55 Hz. The specific temperature of each section set by the twin-screw extruder is shown in Table 1.

[0042] Embodiments 2 to 5

[0043] The PPE alloy material was prepared in the manner of Example 1, except that the amounts of the raw materials used in the preparation were different. The specific formulas and values ​​can be seen in Table 2. In addition, the specific temperatures of each section of the twin-screw extruder in the preparation methods of Examples 2 to 5 are shown in Table 1.

[0044] Comparative Example 1

[0045] The preparation method of the PPE alloy material of this comparative example is as follows: weigh 40 parts of PPE, 45 parts of LCP, 1 part of PEEK, 7 parts of toughening agent, 25 parts of glass fiber, 0.5 parts of polytetrafluoroethylene, 0.5 parts of PE, 0.2 parts of antioxidant 1010, 0.1 parts of antioxidant 168, and 0.2 parts of silicone by mass fraction, put them into a high-speed mixer and mix them for 2 to 5 minutes, and discharge the materials; use a twin-screw extruder for blending and granulation to obtain the PPE alloy material. The twin-screw extrusion processing temperature is 240 to 300°C, and the screw speed is 35 to 55Hz. The specific temperature of each section set by the twin-screw extruder is shown in Table 1.

[0046] Comparative Example 2

[0047] The preparation method of the PPE alloy material of this comparative example is as follows: weigh 75 parts of PPE, 20 parts of LCP, 10 parts of PEEK, 6 parts of toughening agent, 25 parts of glass fiber, 0.5 parts of polytetrafluoroethylene, 0.5 parts of PE, 0.2 parts of antioxidant 1010, 0.1 parts of antioxidant 168, and 0.2 parts of silicone by mass fraction, put them into a high-speed mixer and mix them for 2 to 5 minutes, and discharge the materials; use a twin-screw extruder for blending and granulation to obtain the PPE alloy material. The twin-screw extrusion processing temperature is 240 to 300°C, and the screw speed is 35 to 55Hz. The specific temperature of each section of the twin-screw extruder is shown in Table 1.

[0048] Comparative Example 3

[0049] The preparation method of the PPE alloy material in this comparative example is the same as that in Example 5, with specific reference to the preparation method and raw material ratio of Example 5, the only difference being that aluminum oxide is not added to the compatibilizer masterbatch in this comparative example 3.

[0050] Table 1 shows the temperature of each zone and the main engine speed of the twin-screw extruder during the preparation of the raw material formula in Examples 1 to 5 and Comparative Examples 1 to 2, as shown in Table 1 below.

[0051] Table 1 Twin-screw extruder zone temperature and main engine speed settings

[0052]

[0053] Table 2 Components and fractions of alloy materials of Comparative Examples 1 to 2 and Examples 1 to 5

[0054]

[0055] The polyphenylene ether composite materials obtained by the raw materials of Examples 1 to 5 and Comparative Examples 1 to 2 through a twin-screw extruder were injection molded in an injection molding machine at 270 to 320° C. to prepare tensile, bending, impact, and flame retardant sample strips, and the performance of the sample strips was tested according to the ASTM national standard. The performance test results are shown in Table 3. Before the test, the test sample strips were placed in an environment of room temperature 23±2° C. and relative humidity 50±10% for 48 hours.

[0056] The melt index is tested according to ISO 1133 standard, 280℃, 5Kg;

[0057] The tensile strength is tested according to ASTM D638 standard;

[0058] The bending strength is tested according to ASTM D790 standard;

[0059] The notched impact strength is tested according to ASTM D256 standard;

[0060] The heat deformation temperature is tested according to ASTM D648 standard.

[0061] Table 3 Performance test results of Examples 1 to 5 and Comparative Examples 1 to 2

[0062]

[0063] The PPE alloy materials prepared in the above-mentioned comparative examples 1 to 3 and embodiments 1 to 5 were subjected to weather resistance tests. The artificial weathering (xenon arc lamp aging test) of the present invention is based on the requirements of the laboratory light source exposure test standard GB / T16422.2-2014, and the product is subjected to a weather resistance test according to test method A, as shown in Table 4 below.

[0064] Table 4 Artificial weathering (xenon arc lamp aging test) parameters - Method A

[0065]

[0066] The performance test results after the aging test are shown in Table 5 below.

[0067] Table 5 Performance test results of comparative examples 1 to 3 and embodiments 1 to 5 after testing

[0068]

[0069] It can be seen from the test results of Table 3 and Table 5 that the compatibility and performance of the PPE alloy without adding a compatibilizer and with adding a compatibilizer are completely different. The PPE alloy is completely incompatible without adding a compatibilizer. Because of the incompatibility, after the aging test, the material is delaminated, cracks, blistering and other serious adverse phenomena occur, and its material performance index is very low; after adding the compatibilizer masterbatch, all materials of the PPE alloy are completely fused and copolymerized, and by increasing or decreasing the amount of auxiliary materials and appropriately adjusting the ratio, the performance of the present invention is greatly improved.

[0070] It can also be seen from the test results of 5 that the tensile strength of the PPE alloy compatibilizer masterbatch without adding aluminum oxide is lower than that with adding aluminum oxide.

[0071] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A polyphenylene ether alloy material used for impellers, It is characterized in that It is composed of the following raw materials in parts by weight: 40-75 parts of polyphenylene ether resin; Liquid crystal polymer 20-45 parts; 1-10 parts of polyetheretherketone; Toughening agent SEBS 5-18 parts; 20-50 parts of glass fiber; 0.3-5 parts of polytetrafluoroethylene; 0.5-5 parts of polyethylene; 0.1-0.5 parts of antioxidant; 0.2-3 parts of lubricant; 5-18 parts of compatibilizer masterbatch; The polyphenylene ether resin is any one of a copolymer resin of poly (2, 6-dimethylphenyl) ether and 2, 3, 6-trimethylphenol, or a copolymer resin of 2, 6-dimethylphenol and 2, 3, 6-trimethylphenol; The intrinsic viscosity of the polyphenylene ether resin is 0.3 to 0.6 dl / g; The liquid crystal polymer is American Ticona A625; The compatibilizer masterbatch is composed of the following raw materials in parts by weight: 40-60 parts of polyphenylene ether PPE, 20-35 parts of polystyrene PS, 1-10 parts of aluminum oxide, 1-8 parts of toughening agent EMA, 2-8 parts of maleic anhydride MAH, 0.3-1.5 parts of initiator and 0.2-1 part of benzoin.

2. The polyphenylene ether alloy material for impeller according to claim 1, It is characterized in that The preparation method of the compatibilizer masterbatch is as follows: weighing raw materials according to the weight ratio and putting them into a high-speed mixer, stirring them in the high-speed mixer for 2 to 5 minutes to mix them evenly, and then blending and extruding them through a twin-screw extruder, wherein the temperature of the twin-screw extruder is 200 to 260° C. and the screw speed is 35 to 55 Hz, cooling, and pelletizing to obtain the compatibilizer masterbatch.

3. The polyphenylene ether alloy material for impeller according to claim 1, It is characterized in that The lubricant is any one of pentaerythritol stearate, calcium stearate, zinc stearate, stearic acid, ethylene bis stearamide or organic silicone.

4. The polyphenylene ether alloy material for impeller according to claim 1, It is characterized in that The antioxidants include primary antioxidants and auxiliary antioxidants. The primary antioxidant is any one of pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate or 2,2-methylenebis(4-methyl-6-tert-butylphenol); The auxiliary antioxidant includes any one of tris(nonylphenyl) phosphite or tris(2, 4-di-tert-butylphenyl) phosphite.

5. The method for preparing the polyphenylene ether alloy material for impeller according to any one of claims 1 to 4, It is characterized in that The specific steps include: The raw materials are weighed according to the weight ratio, and the weighed raw materials of each component are put into a high-speed mixer. After being stirred for 2 to 5 minutes by the high-speed mixer to be evenly mixed, they are blended and extruded through a twin-screw extruder. The temperature of the twin-screw extruder is set to 240 to 300° C., the screw speed is set to 350 to 500 rpm, and the materials are cooled and pelletized to obtain a polyphenylene ether alloy material.

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