Resin materials, connectors and photovoltaic modules
By using a combination of modified nanoinorganic oxides and polycarbonate in the resin materials of photovoltaic connectors, the shortcomings of traditional resin materials in chemical resistance and high-temperature hydrolysis are solved, and the resin materials have achieved significant improvements in low-temperature impact and high-temperature hydrolysis.
Patent Information
- Application Number
- CN202411971460.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-04-08
AI Technical Summary
The resin materials of traditional photovoltaic connectors have shortcomings in chemical resistance and high-temperature hydrolysis, which are prone to cracking and lack of reliability at high temperatures.
A resin material is used, and its raw materials include 80 to 100 parts of polycarbonate and 1.5 to 7 parts of modified nanoinorganic oxides. By mixing the nanoinorganic oxide modified by the modifier with the polycarbonate, a resin material with good chemical resistance and high temperature hydrolysis resistance is prepared.
The modified resin material has excellent performance in low-temperature impact performance and hydrolysis resistance, and can be used for a long time at high temperatures to maintain stability.
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Abstract
Description
Technical Field
[0001] The present application relates to the technical field of resin materials, and in particular to a resin material, a connector and a photovoltaic module. Background Art
[0002] Photovoltaic connectors are key parts for interconnecting components such as components, junction boxes, controllers and inverters in photovoltaic power generation systems. Generally, photovoltaic connectors are located between the solar cell array composed of solar cell modules and the solar charging control device. They include connection interfaces, which are connected to the solar cell array and the solar charging control device through cables. Their main function is to connect the power generated by solar cells to external lines, thereby conducting the current generated by solar cells.
[0003] Traditional photovoltaic connector body materials usually use polyphenylene ether (PPE) resin materials, which have insufficient chemical resistance, especially to oil substances, and are very prone to connector cracking. At the same time, this resin material has insufficient reliability when used for a long time at high temperatures. Summary of the invention
[0004] Based on this, it is necessary to provide a resin material, a connector and a photovoltaic module that have both good chemical resistance and high temperature hydrolysis resistance.
[0005] The present application provides a resin material, wherein the raw materials include 80 to 100 parts of polycarbonate and 1.5 to 7 parts of modified nano inorganic oxide in parts by weight;
[0006] The modified nano inorganic oxide comprises a nano inorganic oxide modified by a modifier, and the modifier comprises one or more of methylsilanetriol, tris(trimethylsilyl)silanol, triethylsilanol and triisopropylsilanol.
[0007] In one embodiment, the molecular weight of the polycarbonate is 20,000-35,000.
[0008] In one embodiment, the nano inorganic oxide satisfies one or both of the following conditions:
[0009] (1) The nano inorganic oxide comprises nano silicon dioxide;
[0010] (2) The particle size of the nano inorganic oxide is 15nm~20nm.
[0011] In one embodiment, the resin material further comprises 5 to 15 parts of a hydrophobic agent, 2 to 6 parts of an insulating additive, and 3 to 8 parts of a coupling agent.
[0012] In one embodiment, one or more of the following conditions are met:
[0013] (1) The hydrophobic agent includes one or more of perfluorooctyltriethoxysilane, polymethylhydrogensiloxane and polydimethylsiloxane;
[0014] (2) The insulating additive includes one or more of tetraethyl orthosilicate, polytetrafluoroethylene and polyvinyl chloride;
[0015] (3) The coupling agent includes a silane coupling agent.
[0016] In one embodiment, the resin material further comprises 1 to 3 parts of a flame retardant, 5 to 10 parts of a plasticizer, 0.1 to 0.6 parts of an antioxidant, and 0.1 to 1 parts of a light stabilizer.
[0017] Furthermore, the present application also provides a method for preparing a resin material, comprising the following steps:
[0018] Mixing a modifier and a nano inorganic oxide to modify the nano inorganic oxide to obtain a modified nano inorganic oxide; the modifier includes one or more of methylsilanetriol, tri(trimethylsilyl)silanol, triethylsilanol and triisopropylsilanol;
[0019] The resin material is prepared by mixing 80 to 100 parts of polycarbonate and 1.5 to 7 parts of modified nano inorganic oxide and then extruding.
[0020] In one embodiment, the modifier and the nano inorganic oxide are mixed at 350° C. to 400° C. to modify the nano inorganic oxide.
[0021] Furthermore, the present application also provides a connector, comprising the resin material as described above.
[0022] The present application provides a photovoltaic assembly, including the resin material as described above or the connector as described above.
[0023] The present application uses modified nano inorganic oxides to effectively modify the polycarbonate material in the resin material, so that the modified polycarbonate material has good chemical resistance and high temperature hydrolysis resistance. DETAILED DESCRIPTION
[0024] In order to facilitate understanding of the present application, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0026] The term "and / or" used herein includes any one of two or more related listed items, and also includes any and all combinations of the related listed items, wherein the any and all combinations include any combination of two related listed items, any more related listed items, or all related listed items. For example, "A and / or B" includes three parallel solutions: A, B, and "a combination of A and B".
[0027] In this article, unless otherwise specified, "one or more" means any one of the listed items or any combination of the listed items. Similarly, "one or more" and other expressions that mean "one or more" are also understood in the same way unless otherwise specified.
[0028] In this document, "further", "further", "particularly", "for example", "such as", "example", "for example", etc. are used for descriptive purposes, indicating that the previous and subsequent technical solutions are related in terms of the content covered, but should not be understood as limiting the previous technical solution, nor can they be understood as limiting the scope of protection of this document. In this document, unless otherwise specified, A (such as B) means that B is a non-limiting example of A, and it can be understood that A is not limited to B.
[0029] Herein, "optionally", "optional", and "optional" mean optional, that is, any one of the two parallel schemes of "yes" or "no". If multiple "optional" items appear in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction, each "optional" item is independent of each other. In this application, descriptions such as "optionally contain", "optionally include", etc. mean "contain or not contain". "Optional component X" means that component X exists or does not exist, or means that component X is contained or not contained.
[0030] In this document, the terms "first", "second", "third", "fourth", etc. in "the first aspect", "the second aspect", "the third aspect", "the fourth aspect", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or quantity, nor can they be understood as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first", "second", "third", "fourth", etc. only serve the purpose of non-exhaustive enumeration and description, and it should be understood that they do not constitute a closed limitation on quantity.
[0031] In this article, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.
[0032] Herein, when it comes to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values within the numerical interval is considered to be continuous and includes the two numerical endpoints (i.e., the minimum and maximum values) of the numerical interval, and each numerical value between the two numerical endpoints. Unless otherwise specified, when a numerical interval only refers to integers within the numerical interval, including the two endpoint integers of the numerical range, and each integer between the two endpoints, is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical ranges disclosed herein should be understood to include any and all sub-ranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. "Numerical interval" allows broadly including numerical interval types such as percentage intervals, ratio intervals, and ratio intervals.
[0033] Herein, the term "room temperature" or "normal temperature" generally refers to 4°C to 35°C, for example, 20°C ± 5°C. In some embodiments herein, "room temperature" or "normal temperature" refers to 10°C to 30°C. In some embodiments herein, "room temperature" or "normal temperature" refers to 20°C to 30°C.
[0034] In this article, if there are multiple steps involved in the method flow, unless there is a clear different description in this article, there is no strict order restriction for the execution of these steps, and they can be executed in other orders than described. Moreover, any step can include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn, alternating or simultaneously with other steps or parts of sub-steps or stages of other steps.
[0035] The present application provides a resin material, wherein the raw materials include 80 to 100 parts of polycarbonate and 1.5 to 7 parts of modified nano inorganic oxide in parts by weight;
[0036] The modified nano inorganic oxide includes a nano inorganic oxide modified by a modifier, and the modifier includes one or more of methylsilanetriol, tris(trimethylsilyl)silanol, triethylsilanol and triisopropylsilanol.
[0037] The present application uses modified nano inorganic oxides to effectively modify the polycarbonate material in the resin material, so that the modified polycarbonate material has good chemical resistance and high temperature hydrolysis resistance.
[0038] In a specific example, the molecular weight of the polycarbonate is 20000 to 35000. Further, the molecular weight of the polycarbonate may be, but is not limited to, 20000, 21000, 22000, 23000, 24000, 25000, 26000, 27000, 28000, 29000, 30000, 31000, 32000, 33000, 34000 or 35000.
[0039] In a specific example, the nano inorganic oxide includes nano silicon dioxide.
[0040] In a specific example, the particle size of the nano inorganic oxide is 15 nm to 20 nm. Specifically, the particle size of the nano inorganic oxide can be, but is not limited to, 15 nm, 16 nm, 17 nm, 18 nm, 19 nm or 20 nm.
[0041] In a specific example, the composition of the resin material also includes 5 to 15 parts of a hydrophobic agent, 2 to 6 parts of an insulating additive, and 3 to 8 parts of a coupling agent.
[0042] In a specific example, the composition of the resin material further includes 1 to 3 parts of a flame retardant, 5 to 10 parts of a plasticizer, 0.1 to 0.6 parts of an antioxidant, and 0.1 to 1 part of a light stabilizer.
[0043] In a specific example, the flame retardant is an organic phosphorus flame retardant. Specifically, the organic phosphorus flame retardant may be, but is not limited to, one or more of bisphenol A-bis(diphenyl phosphate) (BDP), tris(2-chloroethyl) phosphate, tris(xylene) phosphate, tris(2,3-dibromopropyl) phosphate, and tris(1-aziridinyl)phosphine oxide.
[0044] In a specific example, the plasticizer may be, but is not limited to, bisphenol A.
[0045] In a specific example, the hydrophobic agent includes one or more of perfluorooctyltriethoxysilane, polymethylhydrogensiloxane, and polydimethylsiloxane.
[0046] In one specific example, the insulating additive includes one or more of tetraethyl orthosilicate, polytetrafluoroethylene, and polyvinyl chloride;
[0047] In a specific example, the coupling agent is a silane coupling agent. Specifically, the silane coupling agent may be one or more of γ-aminopropyltriethoxysilane (KH-550), γ-(2,3-epoxypropyloxy)propyltrimethoxysilane (KH-560), γ-methacryloxypropyltrimethoxysilane (KH-570) and γ-mercaptopropyltrimethoxysilane (KH-590).
[0048] In a specific example, the antioxidant includes one or more of antioxidant 168 , antioxidant 1035 , antioxidant 1010 , and antioxidant 1076 .
[0049] In a specific example, the light stabilizer includes one or more of the light stabilizer 622 , the light stabilizer 770 , the light stabilizer 292 , and the light stabilizer 1130 .
[0050] Furthermore, the present application also provides a method for preparing a resin material, comprising the following steps:
[0051] The modifier and the nano inorganic oxide are mixed to modify the nano inorganic oxide to obtain a modified nano inorganic oxide; the modifier includes one or more of methylsilanetriol, tri(trimethylsilyl)silanol, triethylsilanol and triisopropylsilanol;
[0052] The resin material is prepared by mixing 80 to 100 parts of polycarbonate and 1.5 to 7 parts of modified nano inorganic oxide and then extruding.
[0053] In a specific example, the modifier and the nano inorganic oxide are mixed at 350° C. to 400° C. to modify the nano inorganic oxide.
[0054] Specifically, the preparation method of the modified nano inorganic oxide includes: heating the nano inorganic oxide to 350°C to 400°C, mixing with the modifier for 3h to 5h, cooling to room temperature, and then mixing, stirring and drying with the modifier. It is understood that the preparation temperature of the modified nano inorganic oxide can be, but is not limited to, 350°C, 360°C, 370°C, 380°C, 390°C or 400°C.
[0055] Further, the preparation method of the resin material comprises the following steps: after mixing the hydrophobic agent, the insulating additive and the coupling agent, heating to 50°C to 80°C, stirring for the first time, adding water, maintaining the temperature at 50°C to 80°C, adding the flame retardant, heating the polycarbonate, the modified nano inorganic oxide, the plasticizer, the antioxidant and the light stabilizer to 80°C to 100°C, stirring for the second time, and extruding. It can be understood that the extrusion is performed using a twin-screw extruder.
[0056] Specifically, the mass ratio of the water added to the total mass ratio of the resin material is (3-5):10. The mass ratio of the water to the total mass ratio of the resin material can be, but is not limited to, 3:10, 3.5:10, 4:10, 4.5:10 or 5:10.
[0057] Furthermore, after the hydrophobic agent, insulating additive and coupling agent are mixed, the final heating temperature may be, but not limited to, 50° C., 55° C., 60° C., 65° C., 70° C., 75° C. or 80° C. The final heating temperature after the polycarbonate, modified nano inorganic oxide, plasticizer, antioxidant and light stabilizer are mixed may be, but not limited to, 80° C., 85° C., 90° C., 95° C. or 100° C.
[0058] Understandably, the time of first stirring is 20min-30min. The time of second stirring is 30min-40min. Specifically, the time of first stirring may be but not limited to 20min, 21 min, 22 min, 23 min, 24 min, 25 min, 26 min, 27 min, 28 min, 29 min or 30 min. The time of second stirring may be but not limited to 30min, 31 min, 32 min, 33 min, 34 min, 35 min, 36 min, 37 min, 38 min, 39 min or 40 min.
[0059] In a specific example, the time for maintaining the temperature at 50° C. to 80° C. is 4 h to 6 h. Specifically, the time for maintaining the temperature at 50° C. to 80° C. may be, but is not limited to, 4 h, 4.5 h, 5 h, 5.5 h or 6 h.
[0060] In a specific example, the flame retardant is added and maintained for 2h to 3h.
[0061] Furthermore, the present application also provides a connector, comprising the resin material as described above.
[0062] In a specific example, the connector includes a connector body and a sealing protective layer, wherein the sealing protective layer wraps the connector body.
[0063] The present application provides a photovoltaic assembly, including the resin material as described above or the connector as described above.
[0064] The present application is further described in detail below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present application and are not intended to limit the scope of the present application. The experimental methods for which specific conditions are not specified in the following examples are preferably referred to the guidance given in the present application, and can also be based on the experimental manuals or conventional conditions in the art, can also be based on the conditions recommended by the manufacturer, or refer to experimental methods known in the art.
[0065] In the following specific embodiments, the measured parameters of raw material components may have slight deviations within the range of weighing accuracy unless otherwise specified. For temperature and time parameters, acceptable deviations caused by instrument test accuracy or operation accuracy are allowed. "Normal temperature" refers to 25°C; "normal pressure" refers to 100KPa or 101KPa.
[0066] Example 1
[0067] Nano-silicon dioxide with a particle size of 15 nm to 20 nm is placed in a muffle furnace at 350°C for 3 hours, taken out and cooled to room temperature, and then placed in a high-speed mixer with methylsilanetriol and stirred at room temperature for 1 minute. The mixture is taken out of the high-speed mixer and dried at room temperature for 18 hours to obtain modified nano-silicon dioxide.
[0068] Perfluorooctyl triethoxysilane (PFAS), tetraethyl orthosilicate (TEOS) and γ-(2,3-epoxypropoxy)propyl trimethoxysilane were placed in a high-speed mixer, heated to 50°C and stirred for 20 minutes, 39 parts of distilled water were added to the system, and 50°C was maintained for 4 hours, and then bisphenol A (BPA) was added and maintained for 2 hours. Polycarbonate (PC resin) with a molecular weight of 20,000, modified nano-silica, bisphenol A-bis(diphenyl phosphate) (BDP), antioxidant 168 and light stabilizer 622 were added, heated to 90°C and stirred for 30 minutes to obtain a mixed raw material;
[0069] The mixed raw materials are added to a twin-screw extruder and extruded to obtain a resin material.
[0070] Example 2
[0071] The difference from Example 1 lies in the selection of raw materials and the content. Specifically, the raw material composition of the resin material in Example 2 includes, by weight, 100 parts of polycarbonate, 6 parts of nano-silicon dioxide, 0.3 parts of methylsilanetriol, 3 parts of bisphenol A-bis(diphenyl phosphate), 10 parts of bisphenol A, 15 parts of perfluorooctyltriethoxysilane, 6 parts of tetraethyl orthosilicate, 8 parts of γ- (2,3-epoxypropoxy)propyltrimethoxysilane, 0.6 parts of antioxidant 1035 and 1 part of light stabilizer 770. Other components such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0072] Example 3
[0073] The difference from Example 1 is that the weight portion of methylsilanetriol added is adjusted to 0.075 parts, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0074] Example 4
[0075] The difference from Example 1 is that the polycarbonate with a molecular weight of 20,000 is replaced by a polycarbonate with a molecular weight of 35,000, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0076] Example 5
[0077] The difference from Example 1 is that bisphenol A-bis(diphenyl phosphate) (BDP) is not added, 0.1 parts of antioxidant 168 are replaced by 0.6 parts of antioxidant 1010, 0.1 parts of light stabilizer 622 are replaced by 1 part of light stabilizer 292, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0078] Example 6
[0079] The difference from Example 1 is that bisphenol A is not added, 0.1 parts of antioxidant 168 are replaced by 0.6 parts of antioxidant 1010, 0.1 parts of light stabilizer 622 are replaced by 1 part of light stabilizer 292, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0080] Example 7
[0081] The difference from Example 1 is that perfluorooctyltriethoxysilane (PFAS) is not added, 0.1 parts of antioxidant 168 are replaced by 0.6 parts of antioxidant 1010, 0.1 parts of light stabilizer 622 are replaced by 1 part of light stabilizer 292, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0082] Example 8
[0083] The difference from Example 1 is that γ-(2,3-epoxypropoxy)propyltrimethoxysilane is not added, 0.1 parts of antioxidant 168 are replaced by 0.6 parts of antioxidant 1010, 0.1 parts of light stabilizer 622 are replaced by 1 part of light stabilizer 292, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0084] Example 9
[0085] The difference from Example 1 is that tetraethyl orthosilicate (TEOS) is not added, 0.1 parts of antioxidant 168 are replaced by 0.6 parts of antioxidant 1010, 0.1 parts of light stabilizer 622 are replaced by 1 part of light stabilizer 292, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0086] Comparative Example 1
[0087] The difference from Example 1 is that the raw material composition is 80 parts by weight of polycarbonate, 0.1 parts of antioxidant 168 and 0.1 parts of light stabilizer 622. Other parameters such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0088] Comparative Example 2
[0089] The difference from Example 1 is that methyl silanetriol is not added, 0.1 parts of antioxidant 168 are replaced by 0.6 parts of antioxidant 1010, 0.1 parts of light stabilizer 622 are replaced by 1 part of light stabilizer 292, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0090] Comparative Example 3
[0091] The difference from Example 1 is that nano-silica and methylsilanetriol are not added, 0.1 parts of antioxidant 168 are replaced by 0.6 parts of antioxidant 1076, 0.1 parts of light stabilizer 622 are replaced by 1 part of light stabilizer 1130, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0092] Comparative Example 4
[0093] The difference from Example 1 is that the modifier is replaced by polydimethylsiloxane, and other factors such as the water addition ratio and experimental parameters are the same as those in Example 1.
[0094] Comparative Example 5
[0095] The difference from Example 1 is that the main resin is replaced with polyphenylene ether PPE resin, and other parameters such as the water addition ratio and the experimental parameters are the same as those of Example 1. The raw materials of the above-mentioned examples and comparative examples are charged according to the following Table 1.
[0096] Table 1
[0097]
[0098] Test methods and results summary
[0099] Low temperature impact: -55℃, 16H, 1J energy impact on 1mm thick specimen. If it passes, increase the impact energy (1J each time).
[0100] Hydrolysis resistance: DH double 85 test, continuously in an environment of temperature 85℃ and humidity 85%RH, to see how long it takes for the material to start hydrolyzing.
[0101] Flame retardant: UL94
[0102]
[0103] The present application effectively modifies the polycarbonate material in the resin material by using modified nano inorganic oxides to make the modified polycarbonate material have good chemical resistance and high temperature hydrolysis resistance at the same time, wherein the low temperature impact performance of Examples 1 to 9 reaches 10J~21.5J, and the hydrolysis resistance reaches 3900~4000 hours, but when hydrophobic agent, insulating additive and coupling agent are added to Examples 1 to 6, the low temperature impact performance of the material can be further improved. In Comparative Example 1, only PC resin is added with antioxidant and light stabilizer, and the low temperature impact performance and hydrolysis resistance of the final resin material are poor, while in Comparative Example 2, nano silica is not modified and Comparative Example 3 does not add nano silica and modified substances at the same time, resulting in a significant decrease in the hydrolysis resistance of the resin material, and Comparative Example 4 replaces silanol methyl silane triol with polydimethyl hydrogen siloxane, and the low temperature impact performance and hydrolysis resistance of the final resin material are poor, and Comparative Example 5 replaces PC resin with PE resin, and the low temperature impact performance of the resin material also decreases significantly.
[0104] 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.
[0105] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims, and the description may be used to interpret the scope of the claims.
Claims
1. A resin material, characterized in that: In parts by weight, the raw materials include 80 to 100 parts of polycarbonate and 1.5 to 7 parts of modified nano inorganic oxide; The modified nano inorganic oxide comprises a nano inorganic oxide modified by a modifier, and the modifier comprises one or more of methylsilanetriol, tris(trimethylsilyl)silanol, triethylsilanol and triisopropylsilanol.
2. The resin material according to claim 1, wherein The molecular weight of the polycarbonate is 20,000-35,000.
3. The resin material according to claim 1, wherein The nano inorganic oxide meets one or both of the following conditions: (1) The nano inorganic oxide comprises nano silicon dioxide; (2) The particle size of the nano inorganic oxide is 15nm~20nm.
4. The resin material according to claim 1, wherein The resin material also includes 5 to 15 parts of a hydrophobic agent, 2 to 6 parts of an insulating additive, and 3 to 8 parts of a coupling agent.
5. The resin material according to claim 4, characterized in that One or more of the following conditions are met: (1) The hydrophobic agent includes one or more of perfluorooctyltriethoxysilane, polymethylhydrogensiloxane and polydimethylsiloxane; (2) The insulating additive includes one or more of tetraethyl orthosilicate, polytetrafluoroethylene and polyvinyl chloride; (3) The coupling agent includes a silane coupling agent.
6. The resin material according to any one of claims 1 to 5, characterized in that The resin material also comprises 1 to 3 parts of a flame retardant, 5 to 10 parts of a plasticizer, 0.1 to 0.6 parts of an antioxidant, and 0.1 to 1 parts of a light stabilizer.
7. A method for preparing a resin material, characterized in that: The following steps are involved: Mixing a modifier and a nano inorganic oxide to modify the nano inorganic oxide to obtain a modified nano inorganic oxide; the modifier includes one or more of methylsilanetriol, tri(trimethylsilyl)silanol, triethylsilanol and triisopropylsilanol; The resin material is prepared by mixing 80 to 100 parts of polycarbonate and 1.5 to 7 parts of modified nano inorganic oxide and then extruding.
8. The preparation method according to claim 7, characterized in that: The modifier and the nano inorganic oxide are mixed at 350° C. to 400° C. to modify the nano inorganic oxide.
9. A connector, characterized in that: Comprising the resin material as described in any one of claims 1 to 6.
10. A photovoltaic module, characterized in that: It comprises the resin material as described in any one of claims 1 to 6 or the connector as described in claim 9.