WO2016192093A1 - 一种电感用高密度新型磁性复合材料 - Google Patents

一种电感用高密度新型磁性复合材料 Download PDF

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WO2016192093A1
WO2016192093A1 PCT/CN2015/080825 CN2015080825W WO2016192093A1 WO 2016192093 A1 WO2016192093 A1 WO 2016192093A1 CN 2015080825 W CN2015080825 W CN 2015080825W WO 2016192093 A1 WO2016192093 A1 WO 2016192093A1
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composite material
magnetic composite
density
powder
inductor
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PCT/CN2015/080825
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English (en)
French (fr)
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郭雄志
肖强
阮佳林
邱俊
刘志达
罗涛
刘元来
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深圳市铂科磁材有限公司
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Priority to PCT/CN2015/080825 priority Critical patent/WO2016192093A1/zh
Priority to EP15893749.0A priority patent/EP3306623A4/en
Priority to US15/525,287 priority patent/US20170330662A1/en
Publication of WO2016192093A1 publication Critical patent/WO2016192093A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/10—Metal compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
    • H01F1/26—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated by macromolecular organic substances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/01—Magnetic additives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles

Definitions

  • the invention relates to the technical field of inductance components, in particular to a high-density novel magnetic composite material for inductance.
  • the metal soft magnetic powder core is a new magnetic material with special function of magnetoelectric conversion. It is a magnetic core material produced by a special process using a powder made of metal or alloy soft magnetic material. Soft magnetic materials are widely used in various fields of technology and industry due to their special functions of magnetoelectric conversion. Therefore, metal soft magnetic powder core plays an irreplaceable role in the power electronics industry.
  • China Invention Patent Publication No. CN101552091A discloses a metal powder injection molding inductor and a processing method thereof, which are formed by injecting a composite material mainly composed of a metal soft magnetic powder and a thermosetting binder.
  • This method solves to some extent the disadvantages of high cost of pressing powder core and complicated production and preparation.
  • this method is composed of ordinary thermosetting binder and ferromagnetic powder, and the density of the magnet after curing is low (4.5g/cm 3 ⁇ 5.2g/cm 3 ), low inductance and poor DC bias capability, etc.
  • a high-density new magnetic composite material for inductance in terms of weight percentage, from high temperature resin glue 6 to 12 wt% and magnetic powder 88 to 94wt% composition.
  • the high temperature resin glue is 70 to 80% by weight of the resin glue, and 5 to 10% by weight of the coupling agent.
  • the accelerator is composed of 15 to 20% by weight.
  • the resin glue is a modified epoxy silicone resin.
  • the coupling agent is propyl propyl methyl dimethoxy silane.
  • the accelerator is m-xylylenediamine.
  • the particle size of the magnetic powder is as follows: ⁇ 100 mesh to 200 mesh: 20 ⁇ 30wt%, ⁇ 200 mesh to 500 mesh: 30 to 40wt%, ⁇ 500 mesh: 30 to 50wt%.
  • the magnetic powder is at least one of iron silicon powder, iron powder, iron silicon aluminum powder, iron nickel powder, and iron silicon chromium powder.
  • the inductor has a density of 5.5 to 6.2 g/cm 3 after curing with a high-density novel magnetic composite material, and an initial magnetic permeability of 14 to 35 ⁇ .
  • the integrated inductor core prepared by the magnetic composite material of the invention is simple to produce, and does not require a large press, thereby saving equipment investment;
  • the integrated inductor is prepared by the magnetic composite material of the invention, which reduces the mold loss during the pressing process and reduces the production cost;
  • the integrated inductor is prepared by the magnetic composite material of the invention, and the operation is simple, the magnet of complex shape can be produced, and the super large magnet can be produced.
  • the integrated magnetic inductor is prepared by the magnetic composite material of the invention to form a closed magnetic circuit, and the EMI effect is good.
  • the magnetic composite material of the present invention has a high density of the magnet after curing by a special high-temperature resin glue, and the density thereof can be ensured at 5.5 to 6.2 g/cm 3 , and the inductance value of the prepared inductor is high, and the initial magnetic permeability is obtained. Up to 14 ⁇ .
  • the magnetic composite material of the present invention can withstand higher temperatures and can operate at 180 °C.
  • the magnetic composite material of the invention has high utilization rate, less waste, less dust and meets environmental protection requirements.
  • a method for manufacturing a high-density novel magnetic composite material for an inductor includes the following steps:
  • the magnet After the magnet is molded, it is cured at 130 °C for 2h, the composite density is 6.2g/cm 3 , the initial magnetic permeability can reach 35 ⁇ , and the magnet prepared by the composite material is dense inside, no pores, ensuring the insulation properties between the powders. To reduce eddy current loss between particles.
  • a method for manufacturing a high-density novel magnetic composite material for an inductor includes the following steps:
  • the magnet After the magnet is molded, it is cured at 125 °C for 2.5h, the density of the composite material is 5.9g/cm 3 , the initial magnetic permeability can reach 19 ⁇ , and the magnet prepared by the composite material is dense inside and has no holes to ensure the insulation between the powders. Features to reduce eddy current losses between particles.
  • a method for manufacturing a high-density novel magnetic composite material for an inductor includes the following steps:
  • the magnet After the magnet is molded, it is cured at 140 °C for 1.5h, the composite density is 5.5g/cm 3 , the initial magnetic permeability can reach 14 ⁇ , and the magnet prepared by the composite is dense inside, no pores, ensuring insulation between the powders. Features to reduce eddy current losses between particles.
  • a method for manufacturing a high-density novel magnetic composite material for an inductor includes the following steps:
  • the magnet After the magnet is molded, it is cured at 130 °C for 2h, the composite density is 6.0g/cm 3 , the initial magnetic permeability can reach 26 ⁇ , and the magnet prepared by the composite is dense inside, no pores, ensuring the insulation properties between the powders. To reduce eddy current loss between particles.
  • Example 2 Example 3
  • Example 4 Number of coil turns 30 30 30 30 30
  • Effective magnetic path length l ( cm ) 15.8 15.8 15.8 15.8 15.8 15.8
  • Initial sensitivity L@0A 201.54 269.62 268.64 268.59 269.77

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Manufacturing & Machinery (AREA)
  • Soft Magnetic Materials (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

本发明公开了一种电感用高密度新型磁性复合材料，以重量百分比计，由高温树脂胶6∼12wt% 和磁性粉体88∼94wt% 组成；通过本发明的磁性复合材料制备一体电感磁芯生产简单，无需大型压机，节约了设备投入；减少了压制过程中的模具损耗，降低了生产成本；操作简单，可生产复杂形状的磁体，并且可生产超大磁体；形成闭合磁路，EMI效果好；本发明的磁性复合材料通过特殊高温树脂胶的作用，使固化后的磁体密度高，密度可保证在5.5∼6.2g/cm3 ，制备电感器的感量值高，初始磁导率可达14µ以上；本发明的磁性复合材料能够承受较高温度，可在180 ℃环境下工作；本发明的磁性复合材料利用率高，废料少，粉尘少，符合环保要求。

Description

一种电感用高密度新型磁性复合材料 说明书
一种电感用高密度新型磁性复合材料
技术领域
本发明涉及电感元器件技术领域，具体涉及一种电感用高密度新型磁性复合材料。
背景技术
金属软磁粉芯是一种具有磁电转换特种功能的新型磁性材料，它是用金属或合金软磁材料制成的粉末，通过特殊的工艺生产的磁芯材料。软磁材料由于具有磁电转换的特殊功能，从而被广泛的应用于各个科技领域和工业领域中。正因此，金属软磁粉芯在电力电子行业中发挥着不可代替作用。
传统软磁粉芯的生产基本上是通过压机压制而成，压制在制造软磁粉芯方面具有一定的优势，但同样存在一定的缺陷和不足：
1 、压机属于特大型设备，软磁粉芯压制的 1cm2 单位面积压力需 15T 以上，设备投入大，生产成本高；
2 、压制过程中还需要特殊材料制成的模具，对于生产复杂形状的磁芯存在限制，另外模具属于易耗品，价格昂贵，阻碍了磁芯的快速发展；
3 、软磁粉芯经压制后还需进行退火消除内应力，浸润强化，以及倒角等复杂工序，生产效率低，人力成本高；
4 、产品的尺寸受到压力的限制，尺寸较大的产品无法通过压机制备，制约了磁芯向大尺寸发展；
中国发明专利公布号 CN101552091A 公布了一种金属粉末注射成型电感器及其加工方法，其采用金属软磁粉末与热固性粘结剂为主的复合材料注射而成。这种方法一定程度上解决了压制粉芯成本高，生产制备复杂等不足，但此方法是由普通热固性粘结剂与铁磁粉复合而成，存在固化后磁体密度低（ 4.5g/cm3 ～ 5.2g/cm3 ）、电感低和直流偏置能力差等电磁性能差的缺点。
发明内容
为解决上述技术问题，本发明提供了一种电感用高密度新型磁性复合材料。本发明采用如下技术方案：
一种电感用高密度新型磁性复合材料，以重量百分比计，由高温树脂胶 6 ～ 12wt% 和磁性粉体 88 ～ 94wt% 组成。
进一步的，以重量百分比计，所述高温树脂胶是由树脂胶 70 ～ 80wt% 、偶联剂 5 ～ 10wt% 和促进剂 15 ～ 20wt% 组成。
更进一步的，所述树脂胶为改性环氧硅树脂。
更进一步的，所述偶联剂为巯丙基甲基二甲氧基硅烷。
更进一步的，所述促进剂为间苯二甲二胺。
进一步的，以重量百分比计，所述磁性粉体的粒度配比如下： −100 目～ 200 目： 20 ～ 30wt% ， −200 目～ 500 目： 30 ～ 40wt% ， −500 目： 30 ～ 50wt% 。
更进一步的，所述磁性粉体为铁硅粉 、铁粉、 铁硅铝粉、铁镍粉和铁硅铬粉中的至少一种。
进一步的，所述的电感用高密度新型磁性复合材料固化后密度在 5.5 ～ 6.2g/cm3 ，初始磁导率为 14 ～ 35 µ 。
与现有技术相比，本发明的有益效果是：
1 、通过本发明的磁性复合材料制备一体电感磁芯生产简单，无需大型压机，节约了设备投入；
2 、通过本发明的磁性复合材料制备一体电感，减少了压制过程中的模具损耗，降低了生产成本；
3 、通过本发明的磁性复合材料制备一体电感，操作简单，可生产复杂形状的磁体，并且可生产超大磁体。
4 、通过本发明的磁性复合材料制备一体电感，形成闭合磁路， EMI 效果好。
5 、本发明的磁性复合材料通过特殊高温树脂胶的作用，使固化后的磁体密度高，其密度可保证在 5.5 ～ 6.2g/cm3 ，制备电感器的感量值高，初始磁导率可达 14µ 以上。
6 、本发明的磁性复合材料能够承受较高温度，可在 180 ℃ 环境下工作。
7 、本发明的磁性复合材料利用率高，废料少，粉尘少，符合环保要求。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例 1
一种电感用高密度新型磁性复合材料的制造方法，包括以下步骤：
1 、配制高温树脂胶：按重量称取改性环氧硅树脂 0.42kg 、巯丙基甲基二甲氧基硅烷 0.06kg 、间苯二甲二胺 0.12kg ，均匀混合 3 分钟，保证各成分均匀分布；
2 、配制磁性粉体：按重量称取 −100 目～ 200 目的铁硅粉 1.88kg 、 −200 目～ 500 目的铁硅粉 2.82kg 、 −500 目的铁硅粉 4.7kg ，粉体均匀混合 30 分钟；
3 、将配置好的高温树脂胶 0.6kg 与配置好的磁性粉体 9.4kg 均匀混合 30 分钟，使铁硅粉表面形成一层均匀的高温树脂胶，以备产生绝缘特性，并且保证混合体能够形成稳定的流动特性；
4 、磁体成型后，在 130 ℃ 固化 2h ，复合材料密度为 6.2g/cm3 ，初始磁导率能达到 35µ ，并且复合材料制备的磁体内部致密，无孔洞，确保粉体之间的绝缘特性，减少颗粒间的涡流损耗。
实施例 2
一种电感用高密度新型磁性复合材料的制造方法，包括以下步骤：
1 、配制高温树脂胶：按重量称取改性环氧硅树脂 0.75kg 、巯丙基甲基二甲氧基硅烷 0.07kg 、间苯二甲二胺 0.18kg ，均匀混合 3 分钟，保证各成分均匀分布；
2 、配制磁性粉体：按重量称取 −100 目～ 200 目的铁硅粉 2.25kg 、 −200 目～ 500 目的铁硅粉 3.15kg 、 −500 目的铁硅粉 3.6kg ，粉体均匀混合 30 分钟；
3 、将配置好的高温树脂胶 1kg 与配置好的磁性粉体 9kg 均匀混合 30 分钟，使铁硅粉表面形成一层均匀的高温树脂胶，以备产生绝缘特性，并且保证混合体能够形成稳定的流动特性；
4 、磁体成型后，在 125 ℃ 固化 2.5h ，复合材料密度为 5.9g/cm3 ，初始磁导率能达到 19µ ，并且复合材料制备的磁体内部致密，无孔洞，确保粉体之间的绝缘特性，减少颗粒间的涡流损耗。
实施例 3
一种电感用高密度新型磁性复合材料的制造方法，包括以下步骤：
1 、配制高温树脂胶：按重量称取改性环氧硅树脂 0.96kg 、巯丙基甲基二甲氧基硅烷 0.06kg 、间苯二甲二胺 0.18kg ，均匀混合 3 分钟，保证各成分均匀分布 ；
2 、配制磁性粉体：按重量称取 −100 目～ 200 目的铁硅粉 2.64kg 、 −200 目～ 500 目的铁硅粉 3.52kg 、 −500 目的铁硅粉 2.64kg ，粉体均匀混合 30 分钟；
3 、将配置好的高温树脂胶 1.2kg 与配置好的磁性粉体 8.8kg 均匀混合 30 分钟，使铁硅粉表面形成一层均匀的高温树脂胶，以备产生绝缘特性，并且保证混合体能够形成稳定的流动特性；
4 、磁体成型后，在 140 ℃ 固化 1.5h ，复合材料密度为 5.5g/cm3 ，初始磁导率能达到 14µ ，并且复合材料制备的磁体内部致密，无孔洞，确保粉体之间的绝缘特性，减少颗粒间的涡流损耗。
实施例 4
一种电感用高密度新型磁性复合材料的制造方法，包括以下步骤：
1 、配制高温树脂胶：按重量称取改性环氧硅树脂 0.7kg 、偶联剂 0.1kg 、促进剂 0.2kg ，均匀混合 3 分钟，保证各成分均匀分布；
2 、配制磁性粉体：按重量称取 −100 目～ 200 目的铁镍粉 1.8kg 、 −200 目～ 500 目的铁镍粉 2.7kg 、 −500 目的铁镍粉 4.5kg ，粉体均匀混合 30 分钟；
3 、将配置好的高温树脂胶 1kg 与配置好的磁性粉体 9kg 均匀混合 30 分钟，使铁镍粉表面形成一层均匀的高温树脂胶，以备产生绝缘特性，并且保证混合体能够形成稳定的流动特性；
4 、磁体成型后，在 130 ℃ 固化 2h ，复合材料密度为 6.0g/cm3 ，初始磁导率能达到 26µ ，并且复合材料制备的磁体内部致密，无孔洞，确保粉体之间的绝缘特性，减少颗粒间的涡流损耗。
利用实施例 1 ～4所述 复合材料 制造相同规格的电感，与现有一体成型制造的电感做电气性能对比测试，得到下表数据：
现有一体成型电感 实施例 1 实施例 2 实施例 3 实施例 4
线圈圈数 30 30 30 30 30
有效磁路长度 l （ cm ） 15.8 15.8 15.8 15.8 15.8
初始感量 L@0A 201.54 269.62 268.64 268.59 269.77
5A 电流下保留的感量值 L@5A 180.26 266.69 265.51 265.54 266.85
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (1)

  1. 1． 一种电感用高密度新型磁性复合材料，其特征在于，以重量百分比计，由高温树脂胶 6 ～ 12wt% 和磁性粉体 88 ～ 94wt% 组成。
    2． 根据权利要求 1 所述的电感用高密度新型磁性复合材料，其特征在于，以重量百分比计，所述高温树脂胶是由树脂胶 70 ～ 80wt% 、偶联剂 5 ～ 10wt% 和促进剂 15 ～ 20wt% 组成。
    3． 根据权利要求 2 所述的电感用高密度新型磁性复合材料，其特征在于，
    所述树脂胶为改性环氧硅树脂。
    4． 根据权利要求 2 所述的电感用高密度新型磁性复合材料，其特征在于，所述偶联剂为巯丙基甲基二甲氧基硅烷。
    5． 根据权利要求 2 所述的电感用高密度新型磁性复合材料，其特征在于，所述促进剂为间苯二甲二胺。
    6． 根据权利要求 1 所述的电感用高密度新型磁性复合材料，其特征在于，以重量百分比计，所述磁性粉体的粒度配比如下： −100 目～ 200 目： 20 ～ 30wt% ， −200 目～ 500 目： 30 ～ 40wt% ， −500 目： 30 ～ 50wt% 。
    7． 根据权利要求 6 所述的电感用高密度新型磁性复合材料，其特征在于，所述磁性粉体为铁硅粉、铁粉 、 铁硅铝粉、铁镍粉和铁硅铬粉中的至少一种。
    8． 根据权利要求 1 所述的电感用高密度新型磁性复合材料，其特征在于，所述的电感用高密度新型磁性复合材料固化后密度在 5.5 ～ 6.2g/cm3 ，初始磁导率为 14 ～ 35 µ 。
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