Polycarbonate material and preparation method thereof, air guide plate and air conditioner

Abstract

The present invention relates to the technical field of resin material modification, and specifically provides a polycarbonate material and a preparation method thereof, an air guide plate and an air conditioner, wherein the raw materials for preparing the polycarbonate material include: 80-91 parts by weight of polycarbonate resin; 6-10 parts by weight of toughening agent, wherein the toughening agent includes a siloxane acrylate copolymer and an ethylene-methyl acrylate copolymer; 1-3 parts by weight of a phosphate ester softener; and 0.5-1 parts by weight of a flow modifier. The polycarbonate material provided by the present invention has good high and low temperature resistance, and the prepared air guide plate is not easily deformed under high and low temperature conditions, and the material also has excellent chemical resistance, and the color difference is small under aging or high temperature environment, and can be used for large-scale production of air guide plates.

Description

Technical Field

[0001] The invention relates to the technical field of resin material modification, and in particular to a polycarbonate material and a preparation method thereof, an air guide plate and an air conditioner. Background Art

[0002] The air guide plates of household wall-mounted air conditioners are generally made of ABS material. However, for high-power wall-mounted air conditioners, the ABS air guide plates will deform during long-term use, resulting in a gap between the air guide plates and the air conditioner frame when the air guide plates are closed, affecting the appearance.

[0003] At present, the conventional means to solve the above deformation problem is to fix an aluminum plate of the same size inside the ABS air deflector as a supporting structure. Due to the supporting effect of the aluminum plate, the ABS air deflector can meet the deformation requirements during long-term use. However, this combined structure, on the one hand, has an extra assembly step, and on the other hand, the presence of the aluminum plate greatly increases the weight and cost of the entire air deflector, affecting the economic benefits.

[0004] Although some improvements have been made to address the above-mentioned air-conditioning air guide plate problems and improve the strength of the material, the injection mold and process of the material are complex, and it is easy to turn yellow at high temperatures, and it is difficult to apply high-end air guide plates on a large scale. Therefore, the current air-conditioning air guide plates need to be improved. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the prior art at least to a certain extent. To this end, one object of the present invention is to provide a polycarbonate material and a preparation method thereof, an air guide plate and an air conditioner.

[0006] In a first aspect of the present invention, a polycarbonate material is provided. The raw materials for preparing the polycarbonate material include:

[0007] 80-91 parts by weight of polycarbonate resin;

[0008] 6-10 parts by weight of a toughening agent, wherein the toughening agent comprises a silicone acrylate copolymer and an ethylene-methyl acrylate copolymer;

[0009] 1-3 parts by weight of phosphate softener;

[0010] 0.5-1 parts by weight of flow modifier.

[0011] According to the above-mentioned polycarbonate material of the present invention, it includes polycarbonate resin, toughening agent, phosphate ester softener and flow modifier, and the toughening agent includes siloxane acrylate copolymer and ethylene-methyl acrylate copolymer. By adding the above-mentioned toughening agent, not only can the filling uniformity of polycarbonate resin be significantly improved, the filling stress can be reduced, and the deformation caused by stress at high and low temperatures can be reduced, but also the siloxane acrylate copolymer and ethylene-methyl acrylate copolymer can work together to effectively improve the chemical resistance of the material and reduce the color difference caused by aging or high temperature. The inventor found that although the addition of siloxane acrylate copolymer can improve the chemical resistance of the material, the material is still not resistant to edible oil and other oily substances. Therefore, by compounding ethylene-methyl acrylate copolymer and siloxane acrylate copolymer, the chemical resistance of the material can be significantly improved, especially the resistance to oil molecules. By adding a certain amount of phosphate ester softener, the molecular flexibility of the polycarbonate material can be improved during processing, molecular entanglement can be reduced, and stress concentration can be avoided to cause thermal aging deformation (the phosphate ester substance is currently often used as a flame retardant for PC or PC / ABS materials, but the addition ratio is often large). The inventors found that if more phosphate softeners are added, the heat deformation temperature of the material will be reduced, thereby causing the heat deformation to intensify. At the same time, adding a certain mass of flow modifier can improve the material's fluidity and demoulding performance, reduce internal stress, and effectively improve high and low temperature deformation. However, if more flow modifiers are added, the molecular weight of the material will be reduced, resulting in deterioration of the material's mechanical properties. As a result, the polycarbonate material has good high and low temperature resistance, and the prepared air guide plate is not easy to deform under high and low temperature conditions. The material also has excellent chemical resistance, and the color difference is small under aging or high temperature environment, and can be used for large-scale production of air guide plates.

[0012] According to the polycarbonate material provided by the present invention, the mass ratio of the silicone acrylate copolymer to the ethylene-methyl acrylate copolymer in the toughening agent is not less than 2:1.

[0013] Preferably, the mass ratio of the silicone acrylate copolymer to the ethylene-methyl acrylate copolymer in the toughening agent is (3-10):1.

[0014] According to the polycarbonate material provided by the present invention, the average particle size of the silicone acrylate copolymer is 100 μm-320 μm.

[0015] According to the polycarbonate material provided by the present invention, the shell layer of the silicone acrylate copolymer is a styrene-acrylonitrile copolymer.

[0016] According to the polycarbonate material provided by the present invention, the mass proportion of methyl acrylate in the ethylene-methyl acrylate copolymer is 30%-35%.

[0017] According to the polycarbonate material provided by the present invention, the polycarbonate resin is selected from at least one of bisphenol A polycarbonate, siloxane copolymer polycarbonate, polyester copolymer polycarbonate, and bio-based polycarbonate.

[0018] According to the polycarbonate material provided by the present invention, the phosphate softener is selected from at least one of bisphenol A-bis(diphenyl phosphate) and resorcinol bis(diphenyl phosphate).

[0019] According to the polycarbonate material provided by the present invention, the flow modifier is selected from one of acrylate and styrene-acrylonitrile copolymer.

[0020] Preferably, the weight average molecular weight of the acrylate is 3000-5000.

[0021] Preferably, the weight average molecular weight of the styrene-acrylonitrile copolymer is 30,000-60,000.

[0022] According to the polycarbonate material provided by the present invention, the preparation raw materials further include: at least one of 1-1.5 parts by weight of a weathering agent, 0.2-0.5 parts by weight of a lubricant, and 0.3-0.5 parts by weight of an antioxidant.

[0023] In a second aspect of the present invention, the present invention provides a method for preparing the above-mentioned polycarbonate material, the method comprising:

[0024] The raw materials including polycarbonate resin, toughening agent, phosphate softener and flow modifier are mixed and then extruded and pelletized.

[0025] Therefore, the method can be used to prepare a polycarbonate material with excellent high and low temperature resistance, good chemical resistance and small color difference change under high temperature environment.

[0026] The third aspect of the present invention proposes an air guide plate, which is obtained by injection molding of raw materials including the above-mentioned polycarbonate material. The air guide plate can be obtained by one-time injection molding of polycarbonate material, and does not need to be modified for the injection molding machine and the mold, so the processing cost can be significantly reduced, and it can be suitable for large-scale production. At the same time, the air guide plate has a low deformation rate in high and low temperature environments, is not easy to turn yellow in high temperature environments, has small color difference, and has excellent chemical resistance, good stability, long service life and other advantages. It is particularly suitable as an air guide plate for air conditioners. Compared with traditional air guide plates for air conditioners, it is necessary to add supporting structures such as aluminum plates to meet the requirements of air guide plates for air conditioners not to deform during long-term use. The air guide plate does not need to add aluminum plates or other supporting materials and can also maintain long-term use or high and low temperature environments without deformation. At the same time, it reduces the assembly process and greatly reduces the weight of the air guide plate for air conditioners, so that the air conditioner has a better appearance and lower production cost.

[0027] In a fourth aspect of the present invention, the present invention provides an air conditioner, which includes the above-mentioned air guide plate. Therefore, the air guide plate of the air conditioner can maintain long-term use or high and low temperature environments without adding aluminum plates or other supporting materials, and is corrosion-resistant and has no color difference, thereby improving the appearance of the air conditioner, while reducing the assembly process and greatly reducing the weight of the air guide plate of the air conditioner. Therefore, the air conditioner has a good appearance and a low production cost, and is particularly suitable for large-scale production of high-end air conditioners. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the structure of a traditional air guide plate of an air conditioner;

[0030] Figure 2 It is a schematic diagram of the structure of the air guide plate of the air conditioner provided by the present invention;

[0031] Figure 3 It is a schematic diagram of the thermal aging test of the air guide plate of the air conditioner provided by the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0033] In a first aspect of the present invention, a polycarbonate material is provided. The raw materials for preparing the polycarbonate material include:

[0034] 80-91 parts by weight of polycarbonate resin;

[0035] 6-10 parts by weight of a toughening agent, wherein the toughening agent comprises a silicone acrylate copolymer and an ethylene-methyl acrylate copolymer;

[0036] 1-3 parts by weight of phosphate softener;

[0037] 0.5-1 parts by weight of flow modifier.

[0038] According to the above-mentioned polycarbonate material of the present invention, it includes polycarbonate resin, toughening agent, phosphate ester softener and flow modifier, and the toughening agent includes siloxane acrylate copolymer and ethylene-methyl acrylate copolymer. By adding the above-mentioned toughening agent, not only can the filling uniformity of polycarbonate resin be significantly improved, the filling stress can be reduced, and the deformation caused by stress at high and low temperatures can be reduced, but also the siloxane acrylate copolymer and ethylene-methyl acrylate copolymer can work together to effectively improve the chemical resistance of the material and reduce the color difference caused by aging or high temperature. The inventor found that although the addition of siloxane acrylate copolymer can improve the chemical resistance of the material, the material is still not resistant to grease substances such as edible oil. Therefore, by compounding ethylene-methyl acrylate copolymer and siloxane acrylate copolymer, the chemical resistance of the material can be significantly improved, especially the resistance to grease molecules. By adding a certain amount of phosphate ester softener, the molecular flexibility of the polycarbonate material can be improved during processing, molecular entanglement can be reduced, and stress concentration can be avoided to cause thermal aging deformation (the phosphate ester substance is currently often used as a flame retardant for PC or PC / ABS materials, but the addition ratio is often large). The inventors found that if more phosphate softeners are added, the heat deformation temperature of the material will be reduced, thereby causing the heat deformation to intensify. At the same time, adding a certain mass of flow modifier can improve the material's fluidity and demoulding performance, reduce internal stress, and effectively improve high and low temperature deformation. However, if more flow modifiers are added, the molecular weight of the material will be reduced, resulting in deterioration of the material's mechanical properties. As a result, the polycarbonate material has good high and low temperature resistance, and the prepared air guide plate is not easy to deform under high and low temperature conditions. The material also has excellent chemical resistance, and the color difference is small under aging or high temperature environment, and can be used for large-scale production of air guide plates.

[0039] According to the polycarbonate material provided by the present invention, the mass ratio of the silicone acrylate copolymer and the ethylene-methyl acrylate copolymer in the toughening agent is not less than 2:1, for example, the mass ratio is 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 11:1, 12:1, etc., or a range between any two of the above values. By controlling the mass ratio of the silicone acrylate copolymer and the ethylene-methyl acrylate copolymer in the toughening agent to be not less than 2:1, the synergistic promotion effect of the two can be fully volatilized, the deformation of the air guide plate can be significantly reduced, and the chemical resistance of the polycarbonate material can be improved.

[0040] Preferably, the mass ratio of the silicone acrylate copolymer to the ethylene-methyl acrylate copolymer in the toughening agent is (3-10):1.

[0041] According to the polycarbonate material provided by the present invention, the average particle size (DV50) of the siloxane acrylate copolymer is 100 μm-320 μm, for example, the average particle size is 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 320 μm, etc., or a range between any two of the above values. By controlling the average particle size of the siloxane acrylate copolymer within the above range, the siloxane acrylate copolymer can be well dispersed in the polycarbonate resin, so that the material has uniform chemical resistance, while improving the material's resistance to aging and deformation.

[0042] Preferably, the shell layer of the siloxane acrylate copolymer is styrene-acrylonitrile copolymer (SAN). Compared with siloxane acrylate copolymers with other shell layers, the polycarbonate material using siloxane acrylate copolymer with styrene-acrylonitrile copolymer as the shell layer has better chemical resistance.

[0043] Preferably, the mass proportion of methyl acrylate in the ethylene-methyl acrylate copolymer is 30%-35%.

[0044] According to the polycarbonate material provided by the present invention, the polycarbonate resin is selected from at least one of bisphenol A polycarbonate, siloxane copolymer polycarbonate, polyester copolymer polycarbonate, and bio-based polycarbonate, preferably at least one of bisphenol A polycarbonate and siloxane copolymer polycarbonate.

[0045] Further preferred is bisphenol A polycarbonate having a melt index of 8-12 g / 10 min under the test conditions of 300° C. and 1.2 kg. More preferred is bisphenol A polycarbonate synthesized by phosgene method.

[0046] According to the polycarbonate material provided by the present invention, the phosphate softener is selected from at least one of bisphenol A-bis(diphenyl phosphate) and resorcinol bis(diphenyl phosphate).

[0047] According to the polycarbonate material provided by the present invention, the flow modifier is selected from one of acrylate and styrene-acrylonitrile copolymer. The flow modifier has a relatively low molecular weight, good fluidity, good compatibility with the polycarbonate resin and does not affect the glossiness. A small amount of addition can greatly improve the fluidity of the polycarbonate resin, while significantly reducing the internal stress of the material and improving the high-temperature deformation problem of the material.

[0048] More preferably, the weight average molecular weight of the acrylic acid ester is 3000-5000, and the weight average molecular weight of the styrene-acrylonitrile copolymer is 30000-60000. The use of the flow modifier with the above molecular weight can significantly improve the fluidity and demoulding ability of the material, effectively reduce the internal stress, and improve the high and low temperature deformation.

[0049] According to the polycarbonate material provided by the present invention, the preparation raw materials further include: at least one of 1-1.5 parts by weight of a weathering agent, 0.2-0.5 parts by weight of a lubricant, and 0.3-0.5 parts by weight of an antioxidant.

[0050] According to an embodiment of the present invention, the weathering agent includes at least one of UV5577, UV326, UV327, UV328, UV329, UV234, UV360, UV1577, and UV1600, preferably UV329, UV5577, and UV1600.

[0051] According to an embodiment of the present invention, the lubricant includes at least one of pentaerythritol stearate, ethylene bisstearamide, and polyethylene wax.

[0052] According to an embodiment of the present invention, the antioxidant includes at least one of 1010 antioxidant, 168 antioxidant, 1076 antioxidant, and 164 antioxidant.

[0053] In a second aspect of the present invention, the present invention provides a method for preparing the above-mentioned polycarbonate material, the method comprising:

[0054] The raw materials including polycarbonate resin, toughening agent, phosphate softener and flow modifier are mixed and then extruded and pelletized.

[0055] The raw materials including polycarbonate resin, toughening agent, phosphate softener and flow modifier are weighed according to a certain weight ratio and mixed evenly in a mixing pot, and then the obtained mixture is extruded and pelletized using an extruder to obtain a polycarbonate material. Thus, the method can be used to prepare a polycarbonate material with excellent high and low temperature resistance, good chemical resistance and small color difference change under high temperature environment.

[0056] According to an embodiment of the present invention, the mixed material is extruded and pelletized using a twin-screw extruder, the twin-screw extrusion temperature is 260-280° C., the screw aspect ratio is 40:1 or 42:1, and the screw speed is 300-500 rpm.

[0057] According to an embodiment of the present invention, the above-mentioned preparation raw materials also include at least one of a weathering agent, a lubricant, and an antioxidant.

[0058] The third aspect of the present invention proposes an air guide plate, which is obtained by injection molding of raw materials including the above-mentioned polycarbonate material. The air guide plate can be obtained by one-time injection molding of polycarbonate material, and does not need to be modified for the injection molding machine and the mold, so the processing cost can be significantly reduced, and it can be suitable for large-scale production. At the same time, the air guide plate has a low deformation rate in high and low temperature environments, is not easy to turn yellow in high temperature environments, has small color difference, and has excellent chemical resistance, good stability, long service life and other advantages. It is particularly suitable as an air guide plate for air conditioners. Compared with traditional air guide plates for air conditioners, it is necessary to add supporting structures such as aluminum plates to meet the requirements of air guide plates for air conditioners not to deform during long-term use. The air guide plate does not need to add aluminum plates or other supporting materials and can also maintain long-term use or high and low temperature environments without deformation. At the same time, it reduces the assembly process and greatly reduces the weight of the air guide plate for air conditioners, so that the air conditioner has a better appearance and lower production cost.

[0059] The above-mentioned polycarbonate material can not only be used to make air guide plates for air conditioners, because of its excellent low deformation rate, corrosion resistance, and small color difference, but can also be used to make air conditioner panels. The air conditioner panels made of the above-mentioned polycarbonate material not only have excellent mechanical properties and are not easy to deform, but are also durable and do not discolor, which overall improves the appearance and service life of the air conditioner.

[0060] In a fourth aspect of the present invention, the present invention provides an air conditioner, the air conditioner comprising the above-mentioned air guide plate. Compared with the conventional air conditioner air guide plate (such as Figure 1 As shown), the air guide plate of the present invention (as Figure 2 As shown in the figure, there is no need to add aluminum plates or other supporting materials, and it can maintain long-term use or high and low temperature environments without deformation, corrosion resistance, and color difference, which improves the appearance of the air conditioner, while reducing the assembly process and greatly reducing the weight of the air guide plate of the air conditioner. Therefore, the air conditioner has a good appearance and a low production cost, and is particularly suitable for large-scale production of high-end air conditioners.

[0061] If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the field or the product instructions are used. If no manufacturer is specified for the reagents or instruments used, they are all conventional products that can be purchased through regular channels.

[0062] (I) The sources of materials used in the embodiments and comparative examples are as follows:

[0063]

[0064] (II) The raw materials for preparing the polycarbonate material of the embodiment are specifically shown in Table 1;

[0065] The raw materials for preparing the polycarbonate material of the comparative example are specifically shown in Table 2.

[0066] (III) The preparation process of the polycarbonate material of the embodiment and the comparative example is as follows:

[0067] a. The polycarbonate resin, toughening agent, softener, flow modifier, weathering agent, lubricant and antioxidant are weighed in a weight ratio and mixed evenly using a mixing pot to obtain a mixed material;

[0068] b. The mixture was extruded and pelletized using a twin-screw extruder. The twin-screw extrusion temperature was 270°C, the screw aspect ratio was 40:1, and the screw speed was 400 rpm.

[0069] (IV) The performance of the polycarbonate materials of the embodiments and comparative examples and the prepared air guide plates were tested, as follows:

[0070] 1. Izod notched impact test

[0071] Reference standard GB / T 1843-2008.

[0072] 2. Melt Index

[0073] Reference standard GB / T 3682-2000.

[0074] 3. Tensile strength

[0075] Reference standard GB / T 1040.1-2018.

[0076] 4. Tensile strength retention

[0077] A standard tensile specimen is placed on an arc-shaped environmental strain cracking resistance test fixture. The fixture size refers to ISO22088-3:2006. Edible oil, rust inhibitor, mold cleaning agent and lubricating oil are applied to the surface of the specimen respectively, and it is wrapped with a stretch film. The tensile strength is tested after being placed at 70°C for 96 hours. The ratio to the initial tensile strength is the tensile retention rate. The standard requires that the tensile retention rate be ≥80% to ensure good chemical resistance.

[0078] 5. Thermal aging test

[0079] The polycarbonate material prepared in the embodiment and the comparative example was used for injection molding to obtain an air guide plate component, and then the air guide plate component was used for a heat aging test. The test steps were as follows: storing at 70°C for 145 hours, cooling to 23°C for 17 hours, then heating to 70°C for 191 hours, and finally cooling to 23°C for 4 hours before testing the various points (such as Figure 3 The maximum clearance between points 1, 2, 3, 4, 5, and 6 in the figure and the plane is ≤ 2mm as required by the standard.

[0080] 6. Weathering test

[0081] The color plate is obtained by injection molding using polycarbonate material, and then tested under UV-B light source for 96 hours, and the color difference before and after is recorded. The standard requires the color difference △E≤8.

[0082] (V) The performance test results of the polycarbonate materials and air guide plates of Examples 1-7 are shown in Table 1.

[0083] Table 1

[0084]

[0085] (VI) The performance test results of the polycarbonate materials and air guide plates of Comparative Examples 1-8 are shown in Table 2.

[0086] Table 2

[0087]

[0088] From the data in Table 1, it can be seen that the air guide plate made of the polycarbonate material of the present invention has excellent deformation resistance in the heat aging test and better chemical resistance. Comparing the data in Table 1 and Table 2, the air guide plate of Comparative Example 1 is made of traditional materials, and the air guide plate of the present invention (without aluminum plate) has a smaller thermal aging deformation than the air guide plate of ABS plus aluminum plate in Comparative Example 1. From Comparative Examples 2 and 3, it can be seen that the deformation resistance and chemical resistance of the air guide plate made of polycarbonate resin alone cannot meet the requirements of the air guide plate material. Comparing Example 2 and Comparative Example 4, Comparative Example 4 uses a silicone acrylate copolymer with a larger particle size and a PMMA shell. The melt index of the material in Comparative Example 4 is significantly reduced, the thermal aging deformation is increased, and the chemical resistance is also significantly reduced. Comparing Example 4 and Comparative Example 5, after excessive addition of the phosphate softener in Comparative Example 5, although the material fluidity can be improved to a certain extent, it will lead to a decrease in overall performance and deterioration of oil resistance. At the same time, excessive softener causes the material thermal deformation temperature to drop too much, and the thermal aging deformation is also significantly increased. Comparing Example 3 with Comparative Example 6, Comparative Example 6 simply adds a silicone acrylate copolymer toughening agent, the oil resistance of the material is poor, and the thermal aging deformation is large. Comparing Example 4 with Comparative Example 7, the excessive addition of a flow modifier in Comparative Example 7 will lead to a decrease in molecular weight, partial chain scission of the material, poor chemical resistance, and a large thermal aging deformation. Comparing Example 7 with Comparative Example 8, Comparative Example 8 uses a styrene-acrylonitrile copolymer (flow modifier) ​​with a larger molecular weight, the melt index is reduced, and the thermal aging deformation becomes larger.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A polycarbonate material, characterized in that: The raw materials for preparation include: 80-91 parts by weight of polycarbonate resin; 6-10 parts by weight of a toughening agent, wherein the toughening agent comprises a silicone acrylate copolymer and an ethylene-methyl acrylate copolymer; 1-3 parts by weight of phosphate softener; 0.5-1 parts by weight of flow modifier; The average particle size of the silicone acrylate copolymer is 100 μm-320 μm; The flow modifier is selected from one of acrylate and styrene-acrylonitrile copolymer; The weight average molecular weight of the acrylic acid ester is 3000-5000, The weight average molecular weight of the styrene-acrylonitrile copolymer is 30,000-60,000.

2. The polycarbonate material according to claim 1, characterized in that: The mass ratio of the silicone acrylate copolymer to the ethylene-methyl acrylate copolymer in the toughening agent is not less than 2:

1.

3. The polycarbonate material according to claim 2, characterized in that: The mass ratio of the silicone acrylate copolymer to the ethylene-methyl acrylate copolymer in the toughening agent is (3-10):

1.

4. The polycarbonate material according to any one of claims 1 to 3, characterized in that: The shell layer of the silicone acrylate copolymer is a styrene-acrylonitrile copolymer; And / or, the mass proportion of methyl acrylate in the ethylene-methyl acrylate copolymer is 30%-35%.

5. The polycarbonate material according to any one of claims 1 to 3, characterized in that: The polycarbonate resin is selected from at least one of bisphenol A polycarbonate, siloxane copolymer polycarbonate, polyester copolymer polycarbonate, and bio-based polycarbonate; And / or, the phosphate softener is selected from at least one of bisphenol A-bis(diphenyl phosphate) and resorcinol bis(diphenyl phosphate); And / or, the flow modifier is selected from one of acrylate and styrene-acrylonitrile copolymer.

6. The polycarbonate material according to any one of claims 1 to 3, characterized in that: The raw materials for preparation further include at least one of: 1-1.5 parts by weight of a weathering agent, 0.2-0.5 parts by weight of a lubricant, and 0.3-0.5 parts by weight of an antioxidant.

7. A method for preparing the polycarbonate material according to any one of claims 1 to 6, characterized in that: include: The raw materials including polycarbonate resin, toughening agent, phosphate softener and flow modifier are mixed and then extruded and pelletized.

8. A wind deflector, characterized in that: The polycarbonate material is obtained by injection molding of raw materials including the polycarbonate material according to any one of claims 1 to 6.

9. An air conditioner, characterized in that: Including the wind deflector as described in claim 8.

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