Inductive composite material and method for producing same

Abstract

The present application relates to the technical field of inductance material, and particularly relates to an inductance composite material and a preparation method thereof. The inductance composite material is composed of a winding and a magnet. The winding is distributed in the magnet. The magnet comprises the following raw materials by weight: magnetic matrix powder, resin body, temperature-resistant and weather-resistant adjusting stabilizer, and additive mixed with sodium silicate. The inductance composite material is prepared by matching the winding and the magnet. The magnet is cooperatively adjusted and synergized by the magnetic matrix powder, the resin body, the temperature-resistant and weather-resistant adjusting stabilizer, and the additive mixed with sodium silicate. The obtained magnet composite material product has excellent pressure resistance. Meanwhile, the strength performance and the magnetic loss performance of the product are excellent. The product can realize balanced improvement in performance, and has remarkable effects of temperature resistance, weather resistance and stability.

Description

Technical Field

[0001] This invention relates to the field of inductor materials technology, specifically to an inductor composite material and its preparation method. Background Technology

[0002] Power inductors play a crucial role in photovoltaic inverters, acting as rectifiers or inverters. They are typically required to have high operating voltage, high power output, good insulation, and good heat dissipation. Furthermore, with the miniaturization of devices, power inductors need to be smaller in size while maintaining the same inductance. However, improving the voltage withstand performance of composite materials used in inductors often leads to a deterioration in the product's strength and magnetic loss performance, making it difficult to achieve a balanced improvement in product performance. Additionally, poor temperature resistance and weather stability limit the product's efficiency. Therefore, this invention provides further improvements to these components. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the purpose of this invention is to provide an inductive composite material and its preparation method to solve the problems mentioned in the background art.

[0004] The present invention solves the technical problem by adopting the following technical solution:

[0005] This invention provides an inductor composite material, which is composed of windings and magnets. The windings are distributed inside the magnets. The magnets include the following raw materials in parts by weight: magnetic matrix powder, resin, a temperature and weather stabilizing agent, and an additive containing sodium silicate; wherein the mass ratio of the magnetic matrix powder, resin, temperature and weather stabilizing agent, and additive containing sodium silicate is (20-23):(5-7):(5-8):4.

[0006] Preferably, the magnetic matrix powder is a mixture of iron-nickel powder and amorphous powder in a weight ratio of (75-80):(20-25);

[0007] The nickel-iron powder contains 10% nickel, 10% molybdenum, and 80% iron. The amorphous powder contains the following raw materials by weight percentage: Si 3.5%, C 1%, B 5%, P 1.5%, Al 2%, and Fe 87%.

[0008] The resin body is composed of polyvinyl butyral resin and silicone resin in a weight ratio of 5:3.

[0009] Preferably, the preparation method of the temperature and weather stabilizing agent is as follows:

[0010] S01: Preheat boron nitride at 60-65℃ for 1 hour to obtain preheated boron nitride. Mix 3-5 parts of preheated boron nitride, 3-5 parts of urea solution and 1-2 parts of silane coupling agent KH550 evenly to obtain boron nitride solution.

[0011] S02: Kaolin, barium nitrate solution and nano titanium dioxide are mixed evenly in a weight ratio of (4-7):3:(4-5) to obtain kaolin solution;

[0012] Kaolin liquid and boron nitride liquid were ultrasonically treated at a weight ratio of 3:5. After ultrasonic treatment, the mixture was filtered and dried to obtain a climate modifier.

[0013] S03: Mix 2-3 parts calcium carbonate, 4-7 parts lanthanum chloride solution (4% by mass) and 3-5 parts flaky talc powder thoroughly to obtain a ball milling agent;

[0014] The weather modifier and the ball milling agent were mixed at a weight ratio of 5:3 and ball milled at a speed of 1500 r / min for 1 hour. After the ball milling was completed, the mixture was filtered and dried to obtain a weather-resistant modifier.

[0015] Preferably, the urea solution has a mass fraction of 2-5%; the barium nitrate solution has a mass fraction of 5-8%.

[0016] Preferably, the ultrasonic power of the ultrasonic treatment is 350-400W, and the ultrasonic treatment lasts for 1 hour.

[0017] Preferably, the method for preparing the sodium silicate-doped additive is as follows:

[0018] S101: Irradiate cerium oxide in a proton irradiation chamber for 1 hour at an irradiation power of 350-400W. After irradiation, irradiated cerium oxide is obtained.

[0019] Add 2-5 parts of sodium silicate solution and 1-3 parts of irradiated cerium oxide to 5-8 parts of dopamine hydrochloride solution and stir thoroughly to obtain sodium silicate admixture;

[0020] S102: The sodium silicate admixture and reinforcing agent are mixed at a weight ratio of 5:3 and ball-milled at a speed of 1000 r / min for 1 hour. After ball milling, the mixture is filtered and dried to obtain the sodium silicate admixture additive.

[0021] Preferably, the sodium silicate solution has a mass fraction of 2-5%; and the dopamine hydrochloride solution has a mass fraction of 4-6%.

[0022] Preferably, the method for preparing the reinforcing agent is as follows:

[0023] Add 2-4 parts of nano-silica sol and 1-3 parts of β-cyclodextrin to 5-8 parts of chitosan solution, then add 2-3 parts of aluminum nitride and 3-5 parts of barium carbonate, continue stirring until fully mixed, then filter and dry to obtain the reinforcing agent.

[0024] Preferably, the chitosan solution has a mass fraction of 2-5%.

[0025] This invention also provides a method for preparing an inductive composite material, comprising the following steps:

[0026] The magnetic matrix powder, resin, temperature and weather stabilizing agent, and sodium silicate additive are mixed and ball-milled thoroughly at a speed of 1000-1500 r / min for 1 hour. The ball milling is then completed to obtain the magnet.

[0027] The winding is placed in a mold, a magnet is filled into the mold, and it is die-cast under a pressure of 500 MPa. Then it is heat-cured at a temperature of 180-200℃ for 1 hour to obtain the inductor composite material.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The inductor composite material of this invention is made by combining windings and magnets. The magnet is made by the synergistic effect of magnetic matrix powder, resin, temperature and weather stabilizing agent and sodium silicate additive. The resulting magnet composite material product has excellent pressure resistance, as well as excellent strength and magnetic loss performance. The product can achieve balanced performance improvement and has significant effects on temperature change resistance and weather stability.

[0030] The temperature and weather stabilizing agent is made by preheating boron nitride, then blending it with urea solution and silane coupling agent KH550, and further improving it by ball milling in kaolin liquid. The kaolin, barium nitrate solution and nano titanium dioxide in the kaolin liquid are further blended and enhanced. Through the synergistic effect between the raw materials, with kaolin as the matrix, combined with nano titanium dioxide and boron nitride and other raw materials, the system performance is strengthened and the performance coordination is optimized. At the same time, calcium carbonate, 4% lanthanum chloride solution and flake talc are used to make a ball milling agent. The flake talc in the ball milling agent is integrated into the system to reinforce it. After blending with calcium carbonate, the performance of the product is further improved.

[0031] The additives for blending sodium silicate are made by irradiating cerium oxide to activate its activity. Then, they are blended with sodium silicate solution and dopamine hydrochloride solution, and further improved by ball milling with reinforcing agents. The reinforcing agents are based on aluminum nitride and barium carbonate, and are further coordinated with nano-silica sol, β-cyclodextrin and chitosan solution. Through the mutual matching and synergy between the raw materials, the reinforcing and synergistic effect between the additives for blending sodium silicate and the temperature-resistant stabilizers is optimized, thereby further improving the performance of the product. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] This embodiment provides an inductor composite material composed of windings and magnets. The windings are distributed inside the magnets. The magnets include the following raw materials by weight: magnetic matrix powder, resin, a temperature and weather stabilizing agent, and an additive containing sodium silicate. The mass ratio of the magnetic matrix powder, resin, temperature and weather stabilizing agent, and additive containing sodium silicate is (20-23):(5-7):(5-8):4.

[0034] The magnetic matrix powder in this embodiment is a mixture of iron-nickel powder and amorphous powder in a weight ratio of (75-80):(20-25);

[0035] The nickel-iron powder contains 10% nickel, 10% molybdenum, and 80% iron. The amorphous powder contains the following raw materials by weight percentage: Si 3.5%, C 1%, B 5%, P 1.5%, Al 2%, and Fe 87%.

[0036] The resin body is composed of polyvinyl butyral resin and silicone resin in a weight ratio of 5:3.

[0037] The preparation method of the temperature and weather resistant stabilizer in this embodiment is as follows:

[0038] S01: Preheat boron nitride at 60-65℃ for 1 hour to obtain preheated boron nitride. Mix 3-5 parts of preheated boron nitride, 3-5 parts of urea solution and 1-2 parts of silane coupling agent KH550 evenly to obtain boron nitride solution.

[0039] S02: Kaolin, barium nitrate solution and nano titanium dioxide are mixed evenly in a weight ratio of (4-7):3:(4-5) to obtain kaolin solution;

[0040] Kaolin liquid and boron nitride liquid were ultrasonically treated at a weight ratio of 3:5. After ultrasonic treatment, the mixture was filtered and dried to obtain a climate modifier.

[0041] S03: Mix 2-3 parts calcium carbonate, 4-7 parts lanthanum chloride solution (4% by mass) and 3-5 parts flaky talc powder thoroughly to obtain a ball milling agent;

[0042] The weather modifier and the ball milling agent were mixed at a weight ratio of 5:3 and ball milled at a speed of 1500 r / min for 1 hour. After the ball milling was completed, the mixture was filtered and dried to obtain a weather-resistant modifier.

[0043] In this embodiment, the urea solution has a mass fraction of 2-5%; the barium nitrate solution has a mass fraction of 5-8%.

[0044] In this embodiment, the ultrasonic power for ultrasonic treatment is 350-400W, and the ultrasonic treatment lasts for 1 hour.

[0045] The preparation method of the sodium silicate-doped additive in this embodiment is as follows:

[0046] S101: Irradiate cerium oxide in a proton irradiation chamber for 1 hour at an irradiation power of 350-400W. After irradiation, irradiated cerium oxide is obtained.

[0047] Add 2-5 parts of sodium silicate solution and 1-3 parts of irradiated cerium oxide to 5-8 parts of dopamine hydrochloride solution and stir thoroughly to obtain sodium silicate admixture;

[0048] S102: The sodium silicate admixture and reinforcing agent are mixed at a weight ratio of 5:3 and ball-milled at a speed of 1000 r / min for 1 hour. After ball milling, the mixture is filtered and dried to obtain the sodium silicate admixture additive.

[0049] In this embodiment, the sodium silicate solution has a mass fraction of 2-5%; the dopamine hydrochloride solution has a mass fraction of 4-6%.

[0050] The preparation method of the reinforcing agent in this embodiment is as follows:

[0051] Add 2-4 parts of nano-silica sol and 1-3 parts of β-cyclodextrin to 5-8 parts of chitosan solution, then add 2-3 parts of aluminum nitride and 3-5 parts of barium carbonate, continue stirring until fully mixed, then filter and dry to obtain the reinforcing agent.

[0052] The chitosan solution in this embodiment has a mass fraction of 2-5%.

[0053] The method for preparing an inductive composite material according to this embodiment includes the following steps:

[0054] The magnetic matrix powder, resin, temperature and weather stabilizing agent, and sodium silicate additive are mixed and ball-milled thoroughly at a speed of 1000-1500 r / min for 1 hour. The ball milling is then completed to obtain the magnet.

[0055] The winding is placed in a mold, a magnet is filled into the mold, and it is die-cast under a pressure of 500 MPa. Then it is heat-cured at a temperature of 180-200℃ for 1 hour to obtain the inductor composite material.

[0056] Example 1.

[0057] This embodiment provides an inductor composite material composed of windings and magnets. The windings are distributed inside the magnets, and the magnets comprise the following raw materials by weight: magnetic matrix powder, resin, a temperature and weather stabilizing agent, and an additive containing sodium silicate; wherein the mass ratio of the magnetic matrix powder, resin, temperature and weather stabilizing agent, and additive containing sodium silicate is 20:5:5:4.

[0058] In this embodiment, the magnetic matrix powder is a mixture of iron-nickel powder and amorphous powder in a weight ratio of 75:20.

[0059] The nickel-iron powder contains 10% nickel, 10% molybdenum, and 80% iron. The amorphous powder contains the following raw materials by weight percentage: Si 3.5%, C 1%, B 5%, P 1.5%, Al 2%, and Fe 87%.

[0060] The resin body is composed of polyvinyl butyral resin and silicone resin in a weight ratio of 5:3.

[0061] The preparation method of the temperature and weather resistant stabilizer in this embodiment is as follows:

[0062] S01: Preheat boron nitride at 60℃ for 1 hour to obtain preheated boron nitride. Mix 3-5 parts of preheated boron nitride, 3 parts of urea solution and 1 part of silane coupling agent KH550 evenly to obtain boron nitride solution.

[0063] S02: Kaolin, barium nitrate solution and nano titanium dioxide are mixed evenly in a weight ratio of 4:3:4 to obtain kaolin liquid;

[0064] Kaolin liquid and boron nitride liquid were ultrasonically treated at a weight ratio of 3:5. After ultrasonic treatment, the mixture was filtered and dried to obtain a climate modifier.

[0065] S03: Mix 2 parts calcium carbonate, 4 parts lanthanum chloride solution (4% by mass) and 3 parts flaky talc powder thoroughly to obtain a ball milling agent;

[0066] The weather modifier and the ball milling agent were mixed at a weight ratio of 5:3 and ball milled at a speed of 1500 r / min for 1 hour. After the ball milling was completed, the mixture was filtered and dried to obtain a weather-resistant modifier.

[0067] In this embodiment, the urea solution has a mass fraction of 2% and the barium nitrate solution has a mass fraction of 5%.

[0068] In this embodiment, the ultrasonic power for ultrasonic treatment is 350W, and the ultrasonic treatment lasts for 1 hour.

[0069] The preparation method of the sodium silicate-doped additive in this embodiment is as follows:

[0070] S101: Irradiate cerium oxide in a proton irradiation chamber for 1 hour at an irradiation power of 350W. After irradiation, irradiated cerium oxide is obtained.

[0071] Two parts of sodium silicate solution and one part of irradiated cerium oxide were added to five parts of dopamine hydrochloride solution and stirred thoroughly to obtain sodium silicate admixture;

[0072] S102: The sodium silicate admixture and reinforcing agent are mixed at a weight ratio of 5:3 and ball-milled at a speed of 1000 r / min for 1 hour. After ball milling, the mixture is filtered and dried to obtain the sodium silicate admixture additive.

[0073] In this embodiment, the sodium silicate solution has a mass fraction of 2%; the dopamine hydrochloride solution has a mass fraction of 4%.

[0074] The preparation method of the reinforcing agent in this embodiment is as follows:

[0075] Two parts of nano-silica sol and one part of β-cyclodextrin were added to five parts of chitosan solution, followed by two parts of aluminum nitride and three parts of barium carbonate. The mixture was stirred thoroughly, then filtered and dried to obtain the reinforcing agent.

[0076] The chitosan solution in this embodiment has a mass fraction of 2%.

[0077] The method for preparing an inductive composite material according to this embodiment includes the following steps:

[0078] The magnetic matrix powder, resin, temperature and weather stabilizing agent, and sodium silicate additive were mixed and ball-milled thoroughly at a speed of 1000 r / min for 1 hour. The ball milling was then completed to obtain the magnet.

[0079] The winding is placed in a mold, a magnet is filled into the mold, and it is die-cast under a pressure of 500 MPa. Then it is heat-cured at a temperature of 180°C for 1 hour to obtain the inductor composite material.

[0080] Example 2.

[0081] This embodiment provides an inductor composite material composed of windings and magnets. The windings are distributed inside the magnets, and the magnets comprise the following raw materials in parts by weight: magnetic matrix powder, resin, a temperature and weather stabilizing agent, and an additive containing sodium silicate; wherein the mass ratio of the magnetic matrix powder, resin, temperature and weather stabilizing agent, and additive containing sodium silicate is 23:7:8:4.

[0082] In this embodiment, the magnetic matrix powder is a mixture of iron-nickel powder and amorphous powder in a weight ratio of 80:25.

[0083] The nickel-iron powder contains 10% nickel, 10% molybdenum, and 80% iron. The amorphous powder contains the following raw materials by weight percentage: Si 3.5%, C 1%, B 5%, P 1.5%, Al 2%, and Fe 87%.

[0084] The resin body is composed of polyvinyl butyral resin and silicone resin in a weight ratio of 5:3.

[0085] The preparation method of the temperature and weather resistant stabilizer in this embodiment is as follows:

[0086] S01: Preheat boron nitride at 65°C for 1 hour to obtain preheated boron nitride. Mix 5 parts of preheated boron nitride, 5 parts of urea solution and 2 parts of silane coupling agent KH550 evenly to obtain boron nitride solution.

[0087] S02: Kaolin, barium nitrate solution and nano titanium dioxide are mixed evenly in a weight ratio of 7:3:5 to obtain kaolin liquid;

[0088] Kaolin liquid and boron nitride liquid were ultrasonically treated at a weight ratio of 3:5. After ultrasonic treatment, the mixture was filtered and dried to obtain a climate modifier.

[0089] S03: Mix 3 parts calcium carbonate, 7 parts lanthanum chloride solution (4% by mass) and 5 parts flaky talc powder thoroughly to obtain a ball milling agent;

[0090] The weather modifier and the ball milling agent were mixed at a weight ratio of 5:3 and ball milled at a speed of 1500 r / min for 1 hour. After the ball milling was completed, the mixture was filtered and dried to obtain a weather-resistant modifier.

[0091] In this embodiment, the urea solution has a mass fraction of 5% and the barium nitrate solution has a mass fraction of 8%.

[0092] In this embodiment, the ultrasonic power for ultrasonic treatment is 400W, and the ultrasonic treatment lasts for 1 hour.

[0093] The preparation method of the sodium silicate-doped additive in this embodiment is as follows:

[0094] S101: Irradiate cerium oxide in a proton irradiation chamber for 1 hour at an irradiation power of 400W. After irradiation, irradiated cerium oxide is obtained.

[0095] Five parts of sodium silicate solution and three parts of irradiated cerium oxide were added to eight parts of dopamine hydrochloride solution and stirred thoroughly to obtain sodium silicate admixture;

[0096] S102: The sodium silicate admixture and reinforcing agent are mixed at a weight ratio of 5:3 and ball-milled at a speed of 1000 r / min for 1 hour. After ball milling, the mixture is filtered and dried to obtain the sodium silicate admixture additive.

[0097] In this embodiment, the sodium silicate solution has a mass fraction of 5%; the dopamine hydrochloride solution has a mass fraction of 6%.

[0098] The preparation method of the reinforcing agent in this embodiment is as follows:

[0099] Four parts of nano-silica sol and three parts of β-cyclodextrin were added to eight parts of chitosan solution, followed by three parts of aluminum nitride and five parts of barium carbonate. The mixture was stirred thoroughly, then filtered and dried to obtain the reinforcing agent.

[0100] The chitosan solution in this embodiment has a mass fraction of 5%.

[0101] The method for preparing an inductive composite material according to this embodiment includes the following steps:

[0102] The magnetic matrix powder, resin body, temperature and weather stabilizing agent and sodium silicate additive are mixed and ball-milled thoroughly at a speed of 1500 r / min for 1 hour. After ball milling, the magnet is obtained.

[0103] The winding is placed in a mold, a magnet is filled into the mold, and it is die-cast under a pressure of 500 MPa. Then it is heat-cured at a temperature of 200°C for 1 hour to obtain the inductor composite material.

[0104] Example 3.

[0105] This embodiment provides an inductor composite material composed of windings and magnets. The windings are distributed inside the magnets, and the magnets comprise the following raw materials by weight: magnetic matrix powder, resin, a temperature and weather stabilizing agent, and an additive containing sodium silicate; wherein the mass ratio of the magnetic matrix powder, resin, temperature and weather stabilizing agent, and additive containing sodium silicate is 21.5:6:6.5:4.

[0106] The magnetic matrix powder in this embodiment is a mixture of iron-nickel powder and amorphous powder in a weight ratio of 78.5:22.5.

[0107] The nickel-iron powder contains 10% nickel, 10% molybdenum, and 80% iron. The amorphous powder contains the following raw materials by weight percentage: Si 3.5%, C 1%, B 5%, P 1.5%, Al 2%, and Fe 87%.

[0108] The resin body is composed of polyvinyl butyral resin and silicone resin in a weight ratio of 5:3.

[0109] The preparation method of the temperature and weather resistant stabilizer in this embodiment is as follows:

[0110] S01: Preheat boron nitride at 62.5℃ for 1 hour to obtain preheated boron nitride. Mix 4 parts of preheated boron nitride, 4 parts of urea solution and 1.5 parts of silane coupling agent KH550 evenly to obtain boron nitride solution.

[0111] S02: Kaolin, barium nitrate solution and nano titanium dioxide are mixed evenly in a weight ratio of 5.5:3:4.5 to obtain kaolin solution;

[0112] Kaolin liquid and boron nitride liquid were ultrasonically treated at a weight ratio of 3:5. After ultrasonic treatment, the mixture was filtered and dried to obtain a climate modifier.

[0113] S03: 2.5 parts calcium carbonate, 5.5 parts lanthanum chloride solution (4% by mass) and 4 parts flaky talc powder are thoroughly mixed to obtain a ball milling agent;

[0114] The weather modifier and the ball milling agent were mixed at a weight ratio of 5:3 and ball milled at a speed of 1500 r / min for 1 hour. After the ball milling was completed, the mixture was filtered and dried to obtain a weather-resistant modifier.

[0115] In this embodiment, the urea solution has a mass fraction of 3.5% and the barium nitrate solution has a mass fraction of 6.5%.

[0116] In this embodiment, the ultrasonic power for ultrasonic treatment is 375W, and the ultrasonic treatment lasts for 1 hour.

[0117] The preparation method of the sodium silicate-doped additive in this embodiment is as follows:

[0118] S101: Irradiate cerium oxide in a proton irradiation chamber for 1 hour at an irradiation power of 375W. After irradiation, irradiated cerium oxide is obtained.

[0119] 3.5 parts sodium silicate solution and 2 parts irradiated cerium oxide were added to 6.5 parts dopamine hydrochloride solution and stirred thoroughly to obtain sodium silicate admixture;

[0120] S102: The sodium silicate admixture and reinforcing agent are mixed at a weight ratio of 5:3 and ball-milled at a speed of 1000 r / min for 1 hour. After ball milling, the mixture is filtered and dried to obtain the sodium silicate admixture additive.

[0121] In this embodiment, the sodium silicate solution has a mass fraction of 3.5%; the dopamine hydrochloride solution has a mass fraction of 5%.

[0122] The preparation method of the reinforcing agent in this embodiment is as follows:

[0123] Three parts of nano-silica sol and two parts of β-cyclodextrin were added to 6.5 parts of chitosan solution, followed by 2.5 parts of aluminum nitride and 4 parts of barium carbonate. The mixture was stirred thoroughly, then filtered and dried to obtain the reinforcing agent.

[0124] The chitosan solution in this embodiment has a mass fraction of 3.5%.

[0125] The method for preparing an inductive composite material according to this embodiment includes the following steps:

[0126] The magnetic matrix powder, resin, temperature and weather stabilizing agent, and sodium silicate additive were mixed and ball-milled thoroughly at a speed of 1250 r / min for 1 hour. The ball milling was then completed to obtain the magnet.

[0127] The winding is placed in a mold, a magnet is filled into the mold, and it is die-cast under a pressure of 500 MPa. Then it is heat-cured at a temperature of 190°C for 1 hour to obtain the inductor composite material.

[0128] Comparative Example 1.

[0129] Unlike Example 3, no temperature- and weather-resistant stabilizers were added.

[0130] Comparative Example 2.

[0131] Unlike Example 3, no weather modifier was added in the preparation of the temperature-resistant stabilizer.

[0132] Comparative Example 3.

[0133] Unlike Example 3, no kaolin liquid was added to the climate modifier.

[0134] Comparative Example 4.

[0135] Unlike Example 3, no nano-titanium dioxide and kaolin were added to the kaolin liquid.

[0136] Comparative Example 5.

[0137] Unlike Example 3, boron nitride solution was not added to the climate modifier.

[0138] Comparative Example 6.

[0139] Unlike Example 3, no preheated boron nitride was added to the boron nitride solution.

[0140] Comparative Example 7.

[0141] Unlike Example 3, no ball milling agent was added in the preparation of the temperature-resistant stabilizer.

[0142] Comparative Example 8.

[0143] Unlike Example 3, calcium carbonate and flaky talc were not added to the ball milling agent.

[0144] Comparative Example 9.

[0145] Unlike Example 3, no sodium silicate additive was added.

[0146] Comparative Example 10.

[0147] Unlike Example 3, no sodium silicate admixture was added to the additive used to adjust the sodium silicate content.

[0148] Comparative Example 11.

[0149] Unlike Example 3, no sodium silicate solution or irradiated cerium oxide was added to the sodium silicate admixture.

[0150] Comparative Example 12.

[0151] Unlike Example 3, no reinforcing agent was added to the additive that incorporated sodium silicate.

[0152] The products of Examples 1-3 and Comparative Examples 1-12 were subjected to performance tests, including pressure resistance, strength, and magnetic loss performance, as well as temperature resistance and weathering stability (the products were first placed at 70°C for 12 hours, then heated to 150°C at a rate of 1-3°C / min, held at that temperature for 6 hours, and finally placed at 5°C for 12 hours, followed by irradiation under ultraviolet light for 24 hours at an intensity of 100 W / m²). The results are as follows;

[0153]

[0154] As can be seen from Comparative Examples 1-12 and Examples 1-3;

[0155] The product in Example 3 has excellent pressure resistance, compressive strength and magnetic loss. The performance of the product can be improved in a coordinated manner. In addition, the product has excellent temperature resistance and weather resistance stability. The product can be improved in an integrated and coordinated manner.

[0156] The product's performance tends to deteriorate significantly when neither a temperature- and weather-resistant stabilizer nor a sodium silicate additive is added. By using the raw materials coordinated and synergistically combined according to the present invention, the product's performance is most significantly improved.

[0157] In the preparation of temperature-resistant weather stabilizers, the following methods were used: 1) No weather modifier was added; 2) No kaolin liquid was added to the weather modifier; 3) No nano-titanium dioxide and kaolin were added to the kaolin liquid; 4) No boron nitride liquid was added to the weather modifier; 5) No preheated boron nitride was added to the boron nitride liquid; 6) No ball milling agent was added to the preparation of the temperature-resistant weather stabilizer; 7) No calcium carbonate and flake talc were added to the ball milling agent. All of these methods resulted in varying degrees of performance degradation. The weather modifier prepared using the specific method of this invention, combining kaolin liquid and boron nitride liquid, and the temperature-resistant weather stabilizer prepared using a specific ball milling agent, exhibited the most significant performance improvement.

[0158] Additives containing sodium silicate without sodium silicate admixture, sodium silicate admixtures without sodium silicate solution, irradiated cerium oxide, and additives containing sodium silicate without reinforcing agents all exhibit varying degrees of performance degradation. The additives containing sodium silicate obtained using the specific method of this invention show the most significant performance improvement, and additives containing sodium silicate without reinforcing agents also show a relatively obvious trend of performance degradation.

[0159] Since reinforcing agents have a significant impact on product performance, this invention further explores product performance through the preparation of reinforcing agents.

[0160] Experimental Example 1.

[0161] The only difference from Example 3 is that aluminum nitride was not added to the reinforcing agent.

[0162] Experimental Example 2.

[0163] The only difference from Example 3 is that barium carbonate was not added to the reinforcing agent.

[0164] Experimental Example 3.

[0165] The only difference from Example 3 is that β-cyclodextrin was not added to the reinforcing agent.

[0166] Experimental Example 4.

[0167] The only difference from Example 3 is that nano-silica sol was not added to the reinforcing agent.

[0168] Experimental Example 5.

[0169] The only difference from Example 3 is that water is used instead of chitosan solution.

[0170]

[0171] As can be seen from Experiments 1-5, the absence of aluminum nitride in the preparation of the reinforcing agent resulted in the most significant performance degradation among the factors affecting the preparation of the reinforcing agent. This was followed by the absence of barium carbonate in the reinforcing agent. Furthermore, the absence of β-cyclodextrin, the absence of nano-silica sol, and the substitution of water for chitosan solution all showed a trend of performance degradation. The performance of the reinforcing agent deteriorated with different methods, indicating that the preparation of the reinforcing agent is specific to this invention, and other methods are not as effective as those of this invention.

[0172] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0173] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An inductor composite material, comprising windings and a magnet, wherein the windings are distributed inside the magnet, characterized in that, The magnet comprises the following raw materials in parts by weight: magnetic matrix powder, resin body, temperature and weather stabilizing agent and additives containing sodium silicate; wherein the mass ratio of the magnetic matrix powder, resin body, temperature and weather stabilizing agent and additives containing sodium silicate is (20-23): (5-7): (5-8):

4. The preparation method of the temperature and weather resistant stabilizer is as follows: S01: Preheat boron nitride at 60-65℃ for 1 hour to obtain preheated boron nitride. Mix 3-5 parts of preheated boron nitride, 3-5 parts of urea solution and 1-2 parts of silane coupling agent KH550 evenly to obtain boron nitride solution. S02: Kaolin, barium nitrate solution and nano titanium dioxide are mixed evenly in a weight ratio of (4-7):3:(4-5) to obtain kaolin solution; Kaolin liquid and boron nitride liquid were ultrasonically treated at a weight ratio of 3:

5. After ultrasonic treatment, the mixture was filtered and dried to obtain a climate modifier. S03: Mix 2-3 parts calcium carbonate, 4-7 parts lanthanum chloride solution (4% by mass) and 3-5 parts flaky talc powder thoroughly to obtain a ball milling agent; The weather modifier and the ball milling agent were mixed at a weight ratio of 5:3 and ball milled at a speed of 1500 r / min for 1 hour. After the ball milling was completed, the mixture was filtered and dried to obtain a weather-resistant stabilizer. The preparation method of the sodium silicate-doped additive is as follows: S101: Irradiate cerium oxide in a proton irradiation chamber for 1 hour at an irradiation power of 350-400W. After irradiation, irradiated cerium oxide is obtained. Add 2-5 parts of sodium silicate solution and 1-3 parts of irradiated cerium oxide to 5-8 parts of dopamine hydrochloride solution and stir thoroughly to obtain sodium silicate admixture; S102: The sodium silicate admixture and reinforcing agent are mixed at a weight ratio of 5:3 and ball-milled at a speed of 1000 r / min for 1 hour. After ball milling, the mixture is filtered and dried to obtain the sodium silicate admixture additive.

2. The inductive composite material according to claim 1, characterized in that, The magnetic matrix powder is a mixture of iron-nickel powder and amorphous powder in a weight ratio of (75-80):(20-25); The nickel-iron powder contains 10% nickel, 10% molybdenum, and 80% iron. The amorphous powder contains the following raw materials by weight percentage: Si 3.5%, C 1%, B 5%, P 1.5%, Al 2%, and Fe 87%. The resin body is composed of polyvinyl butyral resin and silicone resin in a weight ratio of 5:

3.

3. The inductive composite material according to claim 1, characterized in that, The urea solution has a mass fraction of 2-5%; the barium nitrate solution has a mass fraction of 5-8%.

4. The inductive composite material according to claim 3, characterized in that, The ultrasonic power of the ultrasonic treatment is 350-400W, and the ultrasonic treatment lasts for 1 hour.

5. The inductive composite material according to claim 1, characterized in that, The sodium silicate solution has a mass fraction of 2-5%; the dopamine hydrochloride solution has a mass fraction of 4-6%.

6. The inductive composite material according to claim 5, characterized in that, The method for preparing the reinforcing agent is as follows: Add 2-4 parts of nano-silica sol and 1-3 parts of β-cyclodextrin to 5-8 parts of chitosan solution, then add 2-3 parts of aluminum nitride and 3-5 parts of barium carbonate, continue stirring until fully mixed, then filter and dry to obtain the reinforcing agent.

7. The inductive composite material according to claim 6, characterized in that, The chitosan solution has a mass fraction of 2-5%.

8. The method for preparing an inductive composite material according to any one of claims 1-7, characterized in that, Includes the following steps: The magnetic matrix powder, resin, temperature and weather stabilizing agent, and sodium silicate additive are mixed and ball-milled thoroughly at a speed of 1000-1500 r / min for 1 hour. The ball milling is then completed to obtain the magnet. The winding is placed in a mold, a magnet is filled into the mold, and it is die-cast under a pressure of 500 MPa. Then it is heat-cured at a temperature of 180-200℃ for 1 hour to obtain the inductor composite material.

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