CN110467796A - 各向异性磁粉粘接用磁粉胶 - Google Patents

各向异性磁粉粘接用磁粉胶 Download PDF

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CN110467796A
CN110467796A CN201910752857.1A CN201910752857A CN110467796A CN 110467796 A CN110467796 A CN 110467796A CN 201910752857 A CN201910752857 A CN 201910752857A CN 110467796 A CN110467796 A CN 110467796A
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magnetic particle
particle colloid
anisotropic magnet
magnet powder
bonding
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赵威盛
赵立文
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Dongguan Haitian Magnetic Industry Co Ltd
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    • 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
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
    • C08G59/50—Amines
    • C08G59/5033—Amines aromatic
    • 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
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
    • C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • 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
    • H01F1/032—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 hard-magnetic materials
    • H01F1/04—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 hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together
    • 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

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Abstract

一种各向异性磁粉粘接用磁粉胶，该磁粉胶包括以重量百分比计的下列组分：粘接剂60～70,固化剂21～28,促进剂2～4,添加剂6～9,所述粘接剂为橡胶、塑料、树脂中的一种,所述树脂为环氧树脂,所述固化剂为芬香胺,所述促进剂为咪唑。将所述各组分相混合，形成磁粉胶混合物。本发明在用于磁粉粘接中的磁场取向时磁粉颗粒能转动自如，可有效提高取向效率和取向效果。

Description

各向异性磁粉粘接用磁粉胶
【技术领域】
本发明涉及各向异性磁体，特别是涉及一种易于磁场取向，且取向效果好的各向异性磁粉粘接用磁粉胶。
【背景技术】
粘结永磁材料是由钕铁硼磁粉加入粘合剂而制成，其作为一种高性能的永磁材料，符合当代电子产品小、轻、薄方向发展的潮流，在办公室自动化设备、电装机械、视听设备、仪器仪表、小型马达和计量机械、手机、CD-ROM、DVD-ROM驱动电机、硬盘主轴电机HDD及其它微特直流电机和自动化仪器仪表等领域得到应用广泛。现有的永磁材料的粘合剂主要为塑料、树脂等，其主要缺陷是组分及功能单一，使得永磁材料在磁场取向时由于磁粉颗粒的转动性差，导致磁场取向效果不理想。
【发明内容】
本发明旨在解决上述问题，而提供一种在用于磁粉粘接中的磁场取向时磁粉颗粒能转动自如，可有效提高取向效率和取向效果的各向异性磁粉粘接用磁粉胶。
为实现上述目的，发明提供一种各向异性磁粉粘接用磁粉胶，该磁粉胶包括以重量百分比计的下列组分：
将所述各组分相混合，形成磁粉胶混合物。
所述粘接剂为橡胶、塑料、树脂中的一种。
所述树脂为环氧树脂。
所述固化剂为芬香胺。
所述促进剂为咪唑。
所述添加剂包括重量百分比为3～4.5的石蜡和重量百分比为3～4.5的石墨。
所述磁粉胶混合物与溶剂按1：5～7的比例相混合，形成粘接磁粉用磁粉胶。
优选地，该各向异性磁粉粘接用磁粉胶包括以重量百分比计的下列组分：
将所述各组分相混合，形成磁粉胶混合物。
本发明的贡献在于，其有效解决了现有的各向异性磁体粘接用胶组份和功能单一的问题。本发明的磁粉胶由于含有固化剂，使之可快速固化。由于含有促进剂和固化剂，其可使磁粉胶在混合过程中能加速融合和固化。由于含有石蜡和石墨，因而有效提高了磁粉颗粒的润滑性，使粘接后的各向异性磁粉在磁场取向时转动自如，因此有效提高了磁场取向效果，保证了磁体的综合磁性能。
【具体实施方式】
下列实施例是对本发明的进一步解释和说明，对本发明不构成任何限制。
本发明的各向异性磁粉粘接用磁粉胶是由粘接剂、固化剂、促进剂、添加剂混合而成，其在制备各种磁体的磁粉时用于包覆和连接磁粉颗粒。
该磁粉胶包括以重量百分比计的下列组分：粘接剂60～70，固化剂21～28，促进剂2～4，添加剂6～9。本实施例中，优选粘接剂65％，固化剂24％，促进剂3％，添加剂8％，所述各组分相混合，形成磁粉胶混合物。其中，所述粘接剂可以是橡胶、塑料、树脂中的一种，本实施例中，所述树脂为环氧树脂，其为磁粉胶的主要成份，用于包覆和粘接磁粉颗粒。所述固化剂为芬香胺，其用于各组分在混合后加速固化。所述促进剂为咪唑，其用于使各组合在混合过程中能快速融合和连接。本实施例中，所述添加剂包括石蜡和石墨，其中，所述石蜡和石墨的重量百分比各为4％。该石蜡和石墨是良好的润滑剂，其在磁粉中可使磁粉颗粒有良好的润滑性，使磁粉颗粒在受到磁场作用时能够灵活转动，因而可有效提高磁体的磁场取向的效率和可靠性，显著提高磁场取向效果。
本实施例中，将所述各组分混合形成的磁粉胶混合物与溶剂按1：6的比例相混合，形成粘接磁粉用磁粉胶，该磁粉胶可用于钕铁硼、钐铁氮等磁粉的粘接，以形成粘接磁体。
本发明的各向异性磁粉粘接用磁粉胶通过以下方法制备：将环氧树脂650g，芬香胺240g，咪唑30g，石蜡和石墨各40g与作为溶剂的丙酮6000g置于密闭容器中，通过压缩空气搅拌泵搅拌2小时，即形成本发明的各向异性磁粉粘接用磁粉胶。
尽管通过以上实施例对本发明进行了揭示，但本发明的保护范围并不局限于此，在不偏离本发明构思的条件下，对以上各构件所做的变形、替换等均将落入本发明的权利要求范围内。

Claims (8)

1.一种各向异性磁粉粘接用磁粉胶，其特征在于，该磁粉胶包括以重量百分比计的下列组分：
将所述各组分相混合，形成磁粉胶混合物。
2.如权利要求1所述的各向异性磁粉粘接用磁粉胶，其特征在于，所述粘接剂为橡胶、塑料、树脂中的一种。
3.如权利要求2所述的各向异性磁粉粘接用磁粉胶，其特征在于，所述树脂为环氧树脂。
4.如权利要求1所述的各向异性磁粉粘接用磁粉胶，其特征在于，所述固化剂为芬香胺。
5.如权利要求1所述的各向异性磁粉粘接用磁粉胶，其特征在于，所述促进剂为咪唑。
6.如权利要求1所述的各向异性磁粉粘接用磁粉胶，其特征在于，所述添加剂包括重量百分比为3～4.5的石蜡和重量百分比为3～4.5的石墨。
7.如权利要求1所述的各向异性磁粉粘接用磁粉胶，其特征在于，所述磁粉胶混合物与溶剂按1：5～7的比例相混合，形成粘接磁粉用磁粉胶。
8.如权利要求1所述的各向异性磁粉粘接用磁粉胶，其特征在于，该磁粉胶包括以重量百分比计的下列组分：
将所述各组分相混合，形成磁粉胶混合物。
CN201910752857.1A 2019-08-15 2019-08-15 各向异性磁粉粘接用磁粉胶 Pending CN110467796A (zh)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1087744A (zh) * 1992-06-01 1994-06-08 三菱麻铁里亚尔株式会社 用于生产各向异性粘结磁体的固态树脂涂覆磁粉及其制造方法
CN101325108A (zh) * 2008-04-03 2008-12-17 麦格昆磁（天津）有限公司 一种粘结钕铁硼磁体及其制备方法
CN102938283A (zh) * 2012-11-14 2013-02-20 天津邦特磁性材料有限公司 一种高磁性高机械强度粘结钕铁硼永磁体及其制备方法
CN103489621A (zh) * 2013-10-18 2014-01-01 北京科技大学 一种采用两步成型工艺制备各向异性粘结磁体的方法
CN104332301A (zh) * 2014-11-25 2015-02-04 湖南航天磁电有限责任公司 一种粘结钕铁硼永磁体的制备方法
CN104616882A (zh) * 2015-01-17 2015-05-13 浙江和也健康科技有限公司 一种各向异性粘结磁体及其生产工艺
CN105206369A (zh) * 2015-10-12 2015-12-30 北京工业大学 一种耐高温各向异性粘结NdFeB磁体及其制备方法
CN105348995A (zh) * 2015-12-16 2016-02-24 襄阳市百盾防护涂层材料有限公司 具有磁性的耐磨涂层材料
CN105374543A (zh) * 2015-12-03 2016-03-02 湖南航天磁电有限责任公司 一种粘结钕铁硼-铁氧体永磁体的制备方法
CN107301916A (zh) * 2016-04-15 2017-10-27 北京中科三环高技术股份有限公司 各向异性钕铁硼粘结磁体及其制备方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1087744A (zh) * 1992-06-01 1994-06-08 三菱麻铁里亚尔株式会社 用于生产各向异性粘结磁体的固态树脂涂覆磁粉及其制造方法
CN101325108A (zh) * 2008-04-03 2008-12-17 麦格昆磁（天津）有限公司 一种粘结钕铁硼磁体及其制备方法
CN102938283A (zh) * 2012-11-14 2013-02-20 天津邦特磁性材料有限公司 一种高磁性高机械强度粘结钕铁硼永磁体及其制备方法
CN103489621A (zh) * 2013-10-18 2014-01-01 北京科技大学 一种采用两步成型工艺制备各向异性粘结磁体的方法
CN104332301A (zh) * 2014-11-25 2015-02-04 湖南航天磁电有限责任公司 一种粘结钕铁硼永磁体的制备方法
CN104616882A (zh) * 2015-01-17 2015-05-13 浙江和也健康科技有限公司 一种各向异性粘结磁体及其生产工艺
CN105206369A (zh) * 2015-10-12 2015-12-30 北京工业大学 一种耐高温各向异性粘结NdFeB磁体及其制备方法
CN105374543A (zh) * 2015-12-03 2016-03-02 湖南航天磁电有限责任公司 一种粘结钕铁硼-铁氧体永磁体的制备方法
CN105348995A (zh) * 2015-12-16 2016-02-24 襄阳市百盾防护涂层材料有限公司 具有磁性的耐磨涂层材料
CN107301916A (zh) * 2016-04-15 2017-10-27 北京中科三环高技术股份有限公司 各向异性钕铁硼粘结磁体及其制备方法

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