WO2023011463A1 - Sintered neodymium iron boron grain boundary diffusion anti-adhesion coating and application thereof - Google Patents

Sintered neodymium iron boron grain boundary diffusion anti-adhesion coating and application thereof Download PDF

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WO2023011463A1
WO2023011463A1 PCT/CN2022/109684 CN2022109684W WO2023011463A1 WO 2023011463 A1 WO2023011463 A1 WO 2023011463A1 CN 2022109684 W CN2022109684 W CN 2022109684W WO 2023011463 A1 WO2023011463 A1 WO 2023011463A1
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sintered ndfeb
parts
coating
grain boundary
boundary diffusion
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PCT/CN2022/109684
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French (fr)
Chinese (zh)
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刘竞成
张震
徐娟
陈翔
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安徽省瀚海新材料股份有限公司
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Publication of WO2023011463A1 publication Critical patent/WO2023011463A1/en

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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
    • H01F1/032—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
    • H01F1/0577—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 sintered
    • 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
    • H01F41/005—Impregnating or encapsulating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/0221—Mounting means for PM, supporting, coating, encapsulating PM

Definitions

  • the invention relates to the technical field of coatings, in particular to a sintered NdFeB grain boundary diffusion anti-sticking coating and an application thereof.
  • NdFeB magnets have been widely used in information technology, wind power generation, nuclear magnetic resonance, automobiles and other fields.
  • NdFeB magnets are divided into sintered NdFeB magnets and bonded NdFeB magnets. The latter was developed late and has a relatively narrow application range.
  • the sintered NdFeB products are usually coated or coated, but usually cannot be passed through the mechanical arm or Automatic equipment realizes the code box, but it is necessary to manually isolate the sintered NdFeB products after coating or magnetron sputtering with high-temperature resistant materials to prevent direct adhesion between products.
  • This method virtually increases labor costs and is time-consuming. It is laborious, and it is easy to achieve adhesion between products due to improper manual operation, reducing the quality of the product.
  • the present invention proposes a sintered NdFeB grain boundary diffusion anti-sticking coating, through which the sticking between coated or coated sintered NdFeB products can be avoided, and the whole process
  • the operation is automated, saving time and effort, improving production efficiency, and the coating is simple and easy to use, which is suitable for popularization.
  • a sintered NdFeB grain boundary diffusion anti-sticking coating comprising a bottom layer and a surface layer, the raw material of the bottom layer is a coupling agent, and the surface layer is made of the following raw materials in parts by weight:
  • Molybdenum sulfide powder 5-8 parts, the particle size of the molybdenum sulfide powder is ⁇ 2 ⁇ m;
  • Epoxy resin 10-20 parts
  • the spraying thickness of the bottom layer is 0.1-1.5 ⁇ m, and the spraying thickness of the surface layer is 1.8-3.5 ⁇ m.
  • the epoxy resin is epoxy resin 6101 or epoxy resin 634 .
  • the coupling agent is one or more of coupling agent KH550, coupling agent KH560, coupling agent KH570, and coupling agent KH792.
  • the organic solvent is one of acetone, absolute ethanol, toluene and xylene.
  • the anti-sticking coating has a particle size of 0.001-0.003mm and a temperature resistance of 1000-1500°C.
  • the invention also provides an application of the sintered NdFeB grain boundary diffusion anti-sticking coating, the anti-sticking coating is applied to the coated or coated sintered NdFeB.
  • the bottom layer is sprayed onto the surface of the coated film or coated sintered NdFeB, and then the surface layer is sprayed, and the bottom layer realizes adhesion between the surface layer and the coated film or the coated sintered NdFeB.
  • the present inventor has invented a kind of anti-sticking coating, at the end of coating production line or magnetron sputtering production line, adds a spraying anti-sticking coating production line, the anti-sticking coating prepared in advance, spraying To the surface of sintered NdFeB magnets, thereby avoiding the adhesion between products and improving production efficiency.
  • the anti-sticking coating of the present invention is composed of a bottom layer and a surface layer, wherein the raw material of the bottom layer is a coupling agent, and the surface layer is prepared from molybdenum sulfide powder, epoxy resin and an organic solvent.
  • Molybdenum sulfide is a metal that belongs to the layered structure of the hexagonal system and has good heat resistance and stability.
  • Molybdenum sulfide crystals are composed of S-Mo-S3 planar unit layers, and the layers are connected by weak van der Waals force, so the friction coefficient of molybdenum sulfide is low, and it has good lubrication and anti-friction effects.
  • Sintered NdFeB magnets can effectively prevent bonding between products.
  • the molybdenum sulfide powder used in the present invention is nano-molybdenum sulfide, which has a larger specific surface area and stronger adsorption capacity than ordinary molybdenum sulfide, and has more excellent wear resistance and lubricating properties.
  • epoxy resin When epoxy resin is cured, it has strong adhesion to sintered NdFeB magnets. Add epoxy resin to the anti-stick coating and compound it with molybdenum sulfide powder to form a composite lubricant material, which strengthens the anti-stick coating and The interfacial adhesion between the sintered NdFeB magnets prevents the anti-stick coating from desorbing from the sintered NdFeB magnets, and also provides anti-corrosion properties to prolong the service life of the sintered NdFeB magnets.
  • the coupling agent is sprayed on the NdFeB magnet as the bottom layer, which will greatly increase the bonding force between the surface layer and the NdFeB magnet.
  • the present invention has the following beneficial effects:
  • the present invention creatively develops an anti-stick coating, which can spray the anti-stick coating on the sintered NdFeB products after coating or coating, so as to avoid mutual sticking between products.
  • the anti-sticking coating of the present invention is a kind of simple and easy-to-use coating, is suitable for popularizing and using, avoids the sintered NdFeB after isolation coating or coating with high-temperature-resistant materials artificially, saves time and effort, and can greatly improve Improve production efficiency and improve product quality.
  • the epoxy resin added in the coating of the present invention forms a composite material with molybdenum sulfide powder, which plays an anti-corrosion role and prolongs the service life of the sintered NdFeB magnet.
  • a sintered NdFeB grain boundary diffusion anti-sticking coating the raw material of the bottom layer is a coupling agent, including a bottom layer and a surface layer, and the surface layer includes the following raw material components in parts by weight:
  • Molybdenum sulfide powder 5-8 parts, the particle size of the molybdenum sulfide powder is ⁇ 2 ⁇ m;
  • Epoxy resin 10-20 parts
  • the epoxy resin is epoxy resin 6101 or epoxy resin 634;
  • the organic solvent is one of acetone, absolute ethanol, toluene and xylene.
  • the main substance in the anti-sticking coating of the present invention is molybdenum sulfide, which has a low friction coefficient and has good lubricating and anti-friction effects. Coating on sintered NdFeB magnets can effectively prevent bonding between products. When epoxy resin is cured, it has strong adhesion to sintered NdFeB magnets.
  • the particle size of the anti-sticking coating is 0.001-0.003mm, and it can withstand high temperature of 1000-1500°C.
  • molybdenum sulfide powder is creatively used as the main substance of the anti-sticking coating and applied to sintered NdFeB products.
  • the parts by weight of molybdenum sulfide powder are 5-8 parts.
  • the parts by weight of the powder are 5 parts, 6 parts, 7 parts or 8 parts.
  • described epoxy resin is epoxy resin 6101 or epoxy resin 634
  • described 6101 and 634 are the product model of epoxy resin, and in the embodiment of the present invention, the parts by weight of epoxy resin is 10 parts, 15 parts or 20 parts, the epoxy resin used is epoxy resin 6101 or epoxy resin 634;
  • the organic solvent is one of acetone, absolute ethanol, toluene, and xylene.
  • the parts by weight of the organic solvent are 30 parts, 35 parts, 40 parts or 45 parts,
  • the organic solvent used is specifically acetone, absolute ethanol or toluene.
  • the bottom layer is a coupling agent
  • the parts by weight are 0.5-2 parts
  • the coupling agent is one of coupling agent KH550, coupling agent KH560, coupling agent KH570, and coupling agent KH792 or more
  • the spraying thickness of the bottom layer is 0.1 ⁇ m, 0.4 ⁇ m and 1 ⁇ m
  • the coupling agent used is KH550 or coupling agent KH560.
  • molybdenum sulfide powder is provided by Aladdin Reagent Co., Ltd., product specification: ⁇ 2 ⁇ m, item number/package: M104968-100g, epoxy resin 6101 and epoxy resin 634 are provided by Nantong Xingchen Synthetic Materials Co., Ltd.
  • the process of this comparative example is basically the same as that of Example 1, the difference is that no molybdenum sulfide powder is added in this comparative example.
  • the process of this comparative example is basically the same as that of Example 1. The difference is that no coupling agent is added in this comparative example, that is, the bottom layer is no longer sprayed, and the surface layer is directly sprayed.
  • the anti-stick coating provided in the present invention is sprayed on the coated film or coated sintered NdFeB, which can better avoid the adhesion phenomenon between products, avoid manual operation, and save time. It saves labor, improves production efficiency, and the coating is simple and easy to use, which is suitable for popularization and use.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Hard Magnetic Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention relates to the technical field of paints, and disclosed are a sintered neodymium iron boron grain boundary diffusion anti-adhesion coating and an application thereof. The anti-adhesion coating comprises a bottom layer and a surface layer; the raw material of the bottom layer is a coupling agent; and the surface layer is prepared from the following raw materials in parts by weight: 5-8 parts of molybdenum sulfide powder, 10-20 parts of epoxy resin, and 30-50 parts of an organic solvent. The anti-adhesion coating of the present invention is sprayed to the surface of a sintered neodymium iron boron magnetic steel, such that adhesion between products can be well avoided, whole-process operation automation is achieved, time and labor are saved, and production efficiency is improved; and the coating is simple, easy to use, and suitable for popularization.

Description

一种烧结钕铁硼晶界扩散防粘涂层及其应用A sintered NdFeB grain boundary diffusion anti-stick coating and its application
本申请要求于2021年08月02日提交的申请号为202110882596.2，发明名称为“一种烧结钕铁硼晶界扩散防粘涂层及其应用”的中国专利申请的优先权，其通过引用方式全部并入本申请。This application claims the priority of the Chinese patent application with the application number 202110882596.2 filed on August 2, 2021, and the title of the invention is "A Sintered NdFeB Grain Boundary Diffusion Anti-Stick Coating and Its Application", which is by reference All are incorporated into this application.
【技术领域】【Technical field】
本发明涉及一种涂料技术领域，具体涉及一种烧结钕铁硼晶界扩散防粘涂层及其应用。The invention relates to the technical field of coatings, in particular to a sintered NdFeB grain boundary diffusion anti-sticking coating and an application thereof.
【背景技术】【Background technique】
近年来，钕铁硼磁钢作为一种有优异的磁性材料，已经在信息技术、风力发电、核磁共振、汽车等领域被广泛应用。钕铁硼磁钢分为烧结钕铁硼与粘接钕铁硼两种，后者开发较晚，应用范围相对狭窄。In recent years, as an excellent magnetic material, NdFeB magnets have been widely used in information technology, wind power generation, nuclear magnetic resonance, automobiles and other fields. NdFeB magnets are divided into sintered NdFeB magnets and bonded NdFeB magnets. The latter was developed late and has a relatively narrow application range.
烧结钕铁硼在制备过程中，为了增加烧结钕铁硼的硬度，提高其导电性和表面美观度等，通常对烧结钕铁硼产品进行镀膜或者涂覆，但处理后通常不能通过机械臂或自动化设备实现码盒，而需要人工将涂覆或者磁控溅射后的烧结钕铁硼产品，用耐高温材料隔离，以防止产品之间直接粘连，此种方式无形中增加了人工成本，费时费力，且容易因人工操作不当使得产品之间实现粘连，降低产品的优良度。During the preparation process of sintered NdFeB, in order to increase the hardness of sintered NdFeB, improve its electrical conductivity and surface aesthetics, etc., the sintered NdFeB products are usually coated or coated, but usually cannot be passed through the mechanical arm or Automatic equipment realizes the code box, but it is necessary to manually isolate the sintered NdFeB products after coating or magnetron sputtering with high-temperature resistant materials to prevent direct adhesion between products. This method virtually increases labor costs and is time-consuming. It is laborious, and it is easy to achieve adhesion between products due to improper manual operation, reducing the quality of the product.
【发明内容】【Content of invention】
针对现有技术中的问题，本发明提出了一种烧结钕铁硼晶界扩散防粘涂层，通过该防粘涂层避免镀膜或者涂覆后的烧结钕铁硼产品之间的粘连，全程操作自动化，省时省力，提高生产效率，且涂层简单易用，适合推广使用。Aiming at the problems in the prior art, the present invention proposes a sintered NdFeB grain boundary diffusion anti-sticking coating, through which the sticking between coated or coated sintered NdFeB products can be avoided, and the whole process The operation is automated, saving time and effort, improving production efficiency, and the coating is simple and easy to use, which is suitable for popularization.
为了实现上述目的，本发明通过以下技术方案予以实现：In order to achieve the above object, the present invention is achieved through the following technical solutions:
一种烧结钕铁硼晶界扩散防粘涂层，包括底层和面层，所述底层的原料为偶联剂，所述面层包括以下重量份数的原料制成：A sintered NdFeB grain boundary diffusion anti-sticking coating, comprising a bottom layer and a surface layer, the raw material of the bottom layer is a coupling agent, and the surface layer is made of the following raw materials in parts by weight:
硫化钼粉末：5-8份，所述硫化钼粉末的粒径<2μm；Molybdenum sulfide powder: 5-8 parts, the particle size of the molybdenum sulfide powder is <2 μm;
环氧树脂：10-20份；Epoxy resin: 10-20 parts;
有机溶剂：30-50份。Organic solvent: 30-50 parts.
优选地，所述底层的喷涂厚度为0.1-1.5μm，所述面层的喷涂厚度为1.8-3.5μm。Preferably, the spraying thickness of the bottom layer is 0.1-1.5 μm, and the spraying thickness of the surface layer is 1.8-3.5 μm.
优选地，所述环氧树脂为环氧树脂6101或环氧树脂634。Preferably, the epoxy resin is epoxy resin 6101 or epoxy resin 634 .
优选地，所述的偶联剂为偶联剂KH550、偶联剂KH560、偶联剂KH570、偶联剂KH792中的一种或多种。Preferably, the coupling agent is one or more of coupling agent KH550, coupling agent KH560, coupling agent KH570, and coupling agent KH792.
优选地，所述有机溶剂为丙酮、无水乙醇、甲苯、二甲苯中的一种。Preferably, the organic solvent is one of acetone, absolute ethanol, toluene and xylene.
优选地，所述防粘涂层的粒度为0.001-0.003mm，耐受温度为1000-1500℃。Preferably, the anti-sticking coating has a particle size of 0.001-0.003mm and a temperature resistance of 1000-1500°C.
本发明还提供了一种烧结钕铁硼晶界扩散防粘涂层的应用，将防粘涂层应用于镀膜或者涂覆后的烧结钕铁硼中。The invention also provides an application of the sintered NdFeB grain boundary diffusion anti-sticking coating, the anti-sticking coating is applied to the coated or coated sintered NdFeB.
本发明中，将所述底层喷涂到镀膜或者涂覆后的烧结钕铁硼表面，然后喷涂面层，底层实现面层和镀膜或者涂覆后的烧结钕铁硼的粘连。In the present invention, the bottom layer is sprayed onto the surface of the coated film or coated sintered NdFeB, and then the surface layer is sprayed, and the bottom layer realizes adhesion between the surface layer and the coated film or the coated sintered NdFeB.
本发明人在从事烧结钕铁硼制备研发工作时发现，在烧结钕铁硼产品制成后，通常要进行镀膜或者涂覆，但处理之后的烧结钕铁硼通常不能通过机械臂或自动化设备实现码盒，而需要人工将涂覆或者磁控溅射后的烧结钕铁硼产品用耐高温材料隔离，以防止产品之间直接粘连。此种方式工人费时费力，且效率低下，还可能会发生人为错误。When the inventor was engaged in the research and development of the preparation of sintered NdFeB, it was found that after the sintered NdFeB products are manufactured, coating or coating is usually required, but the processed sintered NdFeB cannot usually be realized by mechanical arms or automated equipment. Code box, but the sintered NdFeB products after coating or magnetron sputtering need to be isolated with high temperature resistant materials manually to prevent direct adhesion between products. This method is time-consuming and labor-intensive for workers, and is inefficient, and human errors may also occur.
基于此问题，本发明人发明出了一种防粘涂层，在涂覆生产线或者磁控溅射生产线的末尾，增加一道喷涂防粘涂层生产线，将事先调配好的防粘涂层，喷涂到烧结钕铁硼磁钢表面，进而避免了产品之间的粘连，提升了生产效率。Based on this problem, the present inventor has invented a kind of anti-sticking coating, at the end of coating production line or magnetron sputtering production line, adds a spraying anti-sticking coating production line, the anti-sticking coating prepared in advance, spraying To the surface of sintered NdFeB magnets, thereby avoiding the adhesion between products and improving production efficiency.
本发明的防粘涂层由底层和面层组成，底层的原料为偶联剂，面层由硫化钼粉末、环氧树脂和有机溶剂制备而成。硫化钼是一种金属，属于六方晶系的层状结构，具有良好的耐热性和稳定性。硫化钼晶体是由S-Mo-S3平面单元层所组成，层与层之间由较弱的范德华力相连，因此硫化钼的摩擦系数较低，具有良好的润滑和减摩作用，涂覆在烧结钕铁硼磁钢上，能有效地防止产品之间发生粘接。同时，暴露在外部的S原子拥有较好的活性，它和金属离子间有较强的结合粘附力，能让硫化钼较强地依附在烧结钕铁硼磁钢表面，形成牢固的一层膜。本发明中所选用的硫化钼粉末为纳米硫化钼，其比普通的硫化钼具有更大的比表面积，吸附能力也更强，具有更为优异的耐磨和润滑性能。The anti-sticking coating of the present invention is composed of a bottom layer and a surface layer, wherein the raw material of the bottom layer is a coupling agent, and the surface layer is prepared from molybdenum sulfide powder, epoxy resin and an organic solvent. Molybdenum sulfide is a metal that belongs to the layered structure of the hexagonal system and has good heat resistance and stability. Molybdenum sulfide crystals are composed of S-Mo-S3 planar unit layers, and the layers are connected by weak van der Waals force, so the friction coefficient of molybdenum sulfide is low, and it has good lubrication and anti-friction effects. Sintered NdFeB magnets can effectively prevent bonding between products. At the same time, the S atoms exposed to the outside have good activity, and it has strong bonding and adhesion with metal ions, which can make molybdenum sulfide strongly adhere to the surface of sintered NdFeB magnets to form a firm layer. membrane. The molybdenum sulfide powder used in the present invention is nano-molybdenum sulfide, which has a larger specific surface area and stronger adsorption capacity than ordinary molybdenum sulfide, and has more excellent wear resistance and lubricating properties.
环氧树脂在固化时，对烧结钕铁硼磁钢具有较强的附着力，在防粘涂层中加入环氧树脂，和硫化钼粉末复配，形成复合润滑材料，强化防粘涂层和烧结钕铁硼磁钢之间的界面附着力，使得防粘涂层不会从烧结钕铁硼磁钢上脱附，还能起到防腐性，延长烧结钕铁硼磁钢的使用寿命。When epoxy resin is cured, it has strong adhesion to sintered NdFeB magnets. Add epoxy resin to the anti-stick coating and compound it with molybdenum sulfide powder to form a composite lubricant material, which strengthens the anti-stick coating and The interfacial adhesion between the sintered NdFeB magnets prevents the anti-stick coating from desorbing from the sintered NdFeB magnets, and also provides anti-corrosion properties to prolong the service life of the sintered NdFeB magnets.
偶联剂作为底层喷涂在钕铁硼磁钢上，则会大大增加面层和钕铁硼磁钢的结合力。The coupling agent is sprayed on the NdFeB magnet as the bottom layer, which will greatly increase the bonding force between the surface layer and the NdFeB magnet.
与现有技术相比，本发明具有以下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
(1)本发明创造性地研发出一种防粘涂层，能实现对烧结钕铁硼产品进行镀膜或者涂覆后，对其进行喷涂防粘涂层，避免了产品之间的相互粘连。(1) The present invention creatively develops an anti-stick coating, which can spray the anti-stick coating on the sintered NdFeB products after coating or coating, so as to avoid mutual sticking between products.
(2)本发明的防粘涂层是一种简单易用的涂层，适合推广使用，避免人工用耐高温材料隔离涂覆或镀膜后的烧结钕铁硼，省时省力，能大大地提高生产效率，提高产品的优良度。(2) The anti-sticking coating of the present invention is a kind of simple and easy-to-use coating, is suitable for popularizing and using, avoids the sintered NdFeB after isolation coating or coating with high-temperature-resistant materials artificially, saves time and effort, and can greatly improve Improve production efficiency and improve product quality.
(3)本发明的涂层中加入的环氧树脂，和硫化钼粉末形成复配材料，起到防腐的作用，延长烧结钕铁硼磁体的使用寿命。(3) The epoxy resin added in the coating of the present invention forms a composite material with molybdenum sulfide powder, which plays an anti-corrosion role and prolongs the service life of the sintered NdFeB magnet.
本发明的其他特征和优点将在随后的具体实施方式中予以详细说明。Other features and advantages of the present invention will be described in detail in the following specific embodiments.
【具体实施方式】【Detailed ways】
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施例，进一步阐明本发明。In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elucidated below in conjunction with specific embodiments.
一种烧结钕铁硼晶界扩散防粘涂层，所述底层的原料为偶联剂，包括底层和面层，所述面层包括以下重量份数的原料组分：A sintered NdFeB grain boundary diffusion anti-sticking coating, the raw material of the bottom layer is a coupling agent, including a bottom layer and a surface layer, and the surface layer includes the following raw material components in parts by weight:
硫化钼粉末：5-8份，所述硫化钼粉末的粒径<2μm；Molybdenum sulfide powder: 5-8 parts, the particle size of the molybdenum sulfide powder is <2 μm;
环氧树脂：10-20份；Epoxy resin: 10-20 parts;
有机溶剂：30-50份；Organic solvent: 30-50 parts;
所述环氧树脂为环氧树脂6101或环氧树脂634；The epoxy resin is epoxy resin 6101 or epoxy resin 634;
所述有机溶剂为丙酮、无水乙醇、甲苯、二甲苯中的一种。The organic solvent is one of acetone, absolute ethanol, toluene and xylene.
本发明的防粘涂层中的主体物质是硫化钼，硫化钼的摩擦系数较低，具有良好的润滑和减摩作用。涂覆在烧结钕铁硼磁钢上，能有效地防止产品之间发 生粘接。环氧树脂在固化时，对烧结钕铁硼磁钢具有较强的附着力，在防粘涂层中加入环氧树脂，和硫化钼粉末复配，形成复合润滑材料，强化防粘涂层和烧结钕铁硼磁钢之间的界面附着力，使得防粘涂层不会从烧结钕铁硼磁钢上脱附，还能起到防腐性，延长烧结钕铁硼磁钢的使用寿命。The main substance in the anti-sticking coating of the present invention is molybdenum sulfide, which has a low friction coefficient and has good lubricating and anti-friction effects. Coating on sintered NdFeB magnets can effectively prevent bonding between products. When epoxy resin is cured, it has strong adhesion to sintered NdFeB magnets. Add epoxy resin to the anti-stick coating and compound it with molybdenum sulfide powder to form a composite lubricant material, which strengthens the anti-stick coating and The interfacial adhesion between the sintered NdFeB magnets prevents the anti-stick coating from desorbing from the sintered NdFeB magnets, and also provides anti-corrosion properties to prolong the service life of the sintered NdFeB magnets.
本发明中，所述防粘涂层的粒度为0.001-0.003mm，能耐1000-1500℃的高温。In the present invention, the particle size of the anti-sticking coating is 0.001-0.003mm, and it can withstand high temperature of 1000-1500°C.
本发明中，创造性地将硫化钼粉末作为防粘涂层的主体物质，应用到烧结钕铁硼产品中，硫化钼粉末的重量份数为5-8份，本发明的实施例中，硫化钼粉末的重量份数为5份、6份、7份或8份。In the present invention, molybdenum sulfide powder is creatively used as the main substance of the anti-sticking coating and applied to sintered NdFeB products. The parts by weight of molybdenum sulfide powder are 5-8 parts. The parts by weight of the powder are 5 parts, 6 parts, 7 parts or 8 parts.
本发明中，所述环氧树脂为环氧树脂6101或环氧树脂634，所述6101和634均为环氧树脂的产品型号，本发明的实施例中，环氧树脂的重量份数为10份、15份或20份，所用的环氧树脂为环氧树脂6101或环氧树脂634；Among the present invention, described epoxy resin is epoxy resin 6101 or epoxy resin 634, and described 6101 and 634 are the product model of epoxy resin, and in the embodiment of the present invention, the parts by weight of epoxy resin is 10 parts, 15 parts or 20 parts, the epoxy resin used is epoxy resin 6101 or epoxy resin 634;
本发明中，所述有机溶剂为丙酮、无水乙醇、甲苯、二甲苯中的一种，本发明的实施例中，有机溶剂的重量份数为30份、35份、40份或45份，本发明的实施例中，所用的有机溶剂具体为丙酮、无水乙醇或甲苯。In the present invention, the organic solvent is one of acetone, absolute ethanol, toluene, and xylene. In the embodiments of the present invention, the parts by weight of the organic solvent are 30 parts, 35 parts, 40 parts or 45 parts, In the embodiments of the present invention, the organic solvent used is specifically acetone, absolute ethanol or toluene.
本发明中，所述底层为偶联剂，重量份数为0.5-2份，所述偶联剂为偶联剂KH550、偶联剂KH560、偶联剂KH570、偶联剂KH792中的一种或多种，本发明的实施例中，底层的喷涂厚度为0.1μm、0.4μm和1μm，所用的偶联剂为KH550或偶联剂KH560。In the present invention, the bottom layer is a coupling agent, the parts by weight are 0.5-2 parts, and the coupling agent is one of coupling agent KH550, coupling agent KH560, coupling agent KH570, and coupling agent KH792 or more, in the embodiment of the present invention, the spraying thickness of the bottom layer is 0.1 μm, 0.4 μm and 1 μm, and the coupling agent used is KH550 or coupling agent KH560.
以下实施例中，硫化钼粉末由阿拉丁试剂有限公司提供，产品规格：<2μm，货号/包装：M104968-100g，环氧树脂6101和环氧树脂634由南通星辰合成材料有限公司提供。In the following examples, molybdenum sulfide powder is provided by Aladdin Reagent Co., Ltd., product specification: <2 μm, item number/package: M104968-100g, epoxy resin 6101 and epoxy resin 634 are provided by Nantong Xingchen Synthetic Materials Co., Ltd.
实施例1Example 1
将5份硫化钼粉末溶解于30份丙酮中，将其混合液用超声波超声，然后添加10份环氧树脂6101，面层涂层制作完毕。Dissolve 5 parts of molybdenum sulfide powder in 30 parts of acetone, ultrasonicate the mixture, and then add 10 parts of epoxy resin 6101 to complete the surface coating.
取偶联剂KH550，喷涂在镀膜或者涂覆后的烧结钕铁硼表面至厚度0.1μm，然后喷涂面层，厚度为1.8μm，整个防粘涂层就沾附在了烧结钕铁硼的表面，起到避免烧结钕铁硼产品粘连的作用。Take the coupling agent KH550, spray it on the surface of the coated or coated sintered NdFeB to a thickness of 0.1 μm, and then spray the surface layer with a thickness of 1.8 μm, and the entire anti-stick coating adheres to the surface of the sintered NdFeB , to avoid the adhesion of sintered NdFeB products.
实施例2Example 2
将6份硫化钼粉末溶解于35份无水乙醇中，将其混合液用超声波超声，然后添加15份环氧树脂6101，面层涂层制作完毕。Dissolve 6 parts of molybdenum sulfide powder in 35 parts of absolute ethanol, ultrasonicate the mixture, and then add 15 parts of epoxy resin 6101 to complete the surface coating.
取偶联剂KH560，喷涂在镀膜或者涂覆后的烧结钕铁硼表面至厚度0.4μm，然后喷涂面层，厚度为2μm，整个防粘涂层就沾附在了烧结钕铁硼的表面，起到避免烧结钕铁硼产品粘连的作用。Take the coupling agent KH560, spray it on the surface of the coated or coated sintered NdFeB to a thickness of 0.4 μm, and then spray the surface layer with a thickness of 2 μm, and the entire anti-stick coating adheres to the surface of the sintered NdFeB, Play the role of avoiding the adhesion of sintered NdFeB products.
实施例3Example 3
将7份硫化钼粉末溶解于40份甲苯中，将其混合液用超声波超声，然后添加20份环氧树脂634，面层涂层制作完毕。Dissolve 7 parts of molybdenum sulfide powder in 40 parts of toluene, ultrasonicate the mixture, and then add 20 parts of epoxy resin 634 to complete the surface coating.
取偶联剂KH550，喷涂在镀膜或者涂覆后的烧结钕铁硼表面至厚度1μm，然后喷涂面层，厚度为2.2μm，整个防粘涂层就沾附在了烧结钕铁硼的表面，起到避免烧结钕铁硼产品粘连的作用。Take the coupling agent KH550, spray it on the surface of the coated or coated sintered NdFeB to a thickness of 1 μm, and then spray the surface layer with a thickness of 2.2 μm, and the entire anti-stick coating will adhere to the surface of the sintered NdFeB, Play the role of avoiding the adhesion of sintered NdFeB products.
实施例4Example 4
将8份硫化钼粉末溶解于45份甲苯中，将其混合液用超声波超声，然后添加20份环氧树脂634，面层涂层制作完毕。Dissolve 8 parts of molybdenum sulfide powder in 45 parts of toluene, ultrasonicate the mixture, and then add 20 parts of epoxy resin 634 to complete the surface coating.
取偶联剂KH550，喷涂在镀膜或者涂覆后的烧结钕铁硼表面至厚度1μm，然后喷涂面层，厚度为2μm，整个防粘涂层就沾附在了烧结钕铁硼的表面，起到避免烧结钕铁硼产品粘连的作用。Take the coupling agent KH550, spray it on the surface of the coated or coated sintered NdFeB to a thickness of 1 μm, and then spray the surface layer with a thickness of 2 μm, and the entire anti-stick coating will adhere to the surface of the sintered NdFeB To avoid the adhesion of sintered NdFeB products.
实施例5Example 5
将8份硫化钼粉末溶解于30份无水乙醇中，将其混合液用超声波超声，然后添加15份环氧树脂634，面层涂层制作完毕。Dissolve 8 parts of molybdenum sulfide powder in 30 parts of absolute ethanol, ultrasonicate the mixture, and then add 15 parts of epoxy resin 634 to complete the surface coating.
取偶联剂KH550，喷涂在镀膜或者涂覆后的烧结钕铁硼表面至厚度0.4μm，然后喷涂面层，厚度为1.8μm，整个防粘涂层就沾附在了烧结钕铁硼的表面，起到避免烧结钕铁硼产品粘连的作用。Take the coupling agent KH550, spray it on the surface of the coated or coated sintered NdFeB to a thickness of 0.4 μm, and then spray the surface layer with a thickness of 1.8 μm, and the entire anti-stick coating adheres to the surface of the sintered NdFeB , to avoid the adhesion of sintered NdFeB products.
对比例1Comparative example 1
本对比例和实施例1的过程基本一致，不同的是，本对比例中不添加硫化钼粉末。The process of this comparative example is basically the same as that of Example 1, the difference is that no molybdenum sulfide powder is added in this comparative example.
对比例2Comparative example 2
本对比例和实施例1的过程基本一致，不同的是，本对比例中不添加偶联剂，即不再喷涂底层，直接喷涂面层。The process of this comparative example is basically the same as that of Example 1. The difference is that no coupling agent is added in this comparative example, that is, the bottom layer is no longer sprayed, and the surface layer is directly sprayed.
经过现场操作发现，在使用了发明中的防粘涂层后，烧结钕铁硼产品之间的粘连情况见表1：After on-site operation, it was found that after using the anti-stick coating in the invention, the adhesion between sintered NdFeB products is shown in Table 1:
表1 实施例1-5和对比例1-2的产品粘连情况The product adhesion situation of table 1 embodiment 1-5 and comparative example 1-2
组别group 产品粘连情况Product adhesion
实施例1Example 1 无粘连no adhesion
实施例2Example 2 无粘连no adhesion
实施例3Example 3 无粘连no adhesion
实施例4Example 4 无粘连no adhesion
实施例5Example 5 无粘连no adhesion
对比例1Comparative example 1 有粘连Adhesion
对比例2Comparative example 2 轻微粘连slight adhesion
通过表1中的数据可知，本发明中提供的防粘涂层喷涂到镀膜或者涂覆后的烧结钕铁硼上，能较好地避免产品之间的粘连现象，避免了人工操作，省时省力，提高生产效率，且涂层简单易用，适合推广使用。It can be seen from the data in Table 1 that the anti-stick coating provided in the present invention is sprayed on the coated film or coated sintered NdFeB, which can better avoid the adhesion phenomenon between products, avoid manual operation, and save time. It saves labor, improves production efficiency, and the coating is simple and easy to use, which is suitable for popularization and use.
以上显示和描述了本发明的基本原理、主要特征和本发明的特点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明的范围内。本发明要求保护的范围由所附的权利要求书及其等效物界定。The basic principles, main features and characteristics of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible which fall within the scope of the claimed invention. The scope of the claimed invention is defined by the appended claims and their equivalents.

Claims (8)

  1. 一种烧结钕铁硼晶界扩散防粘涂层，其特征在于，包括底层和面层，所述底层的原料为偶联剂，所述面层由以下重量份数的原料制备而成：A sintered NdFeB grain boundary diffusion anti-sticking coating is characterized in that it includes a bottom layer and a surface layer, the raw material of the bottom layer is a coupling agent, and the surface layer is prepared from the following raw materials in parts by weight:
    硫化钼粉末：5-8份，所述硫化钼粉末的粒径<2μm；Molybdenum sulfide powder: 5-8 parts, the particle size of the molybdenum sulfide powder is <2 μm;
    环氧树脂：10-20份；Epoxy resin: 10-20 parts;
    有机溶剂：30-50份。Organic solvent: 30-50 parts.
  2. 根据权利要求1所述的烧结钕铁硼晶界扩散防粘涂层，其特征在于，所述底层的喷涂厚度为0.1-1.5μm，所述面层的喷涂厚度为1.8-3.5μm。The sintered NdFeB grain boundary diffusion anti-sticking coating according to claim 1, characterized in that the spraying thickness of the bottom layer is 0.1-1.5 μm, and the spraying thickness of the surface layer is 1.8-3.5 μm.
  3. 根据权利要求1所述的烧结钕铁硼晶界扩散防粘涂层，其特征在于，所述环氧树脂为环氧树脂6101或环氧树脂634。The sintered NdFeB grain boundary diffusion anti-stick coating according to claim 1, wherein the epoxy resin is epoxy resin 6101 or epoxy resin 634.
  4. 根据权利要求1所述的烧结钕铁硼晶界扩散防粘涂层，其特征在于，所述的偶联剂为偶联剂KH550、偶联剂KH560、偶联剂KH570、偶联剂KH792中的一种或多种。The sintered NdFeB grain boundary diffusion anti-sticking coating according to claim 1, wherein the coupling agent is coupling agent KH550, coupling agent KH560, coupling agent KH570, coupling agent KH792 one or more of .
  5. 根据权利要求1所述的烧结钕铁硼晶界扩散防粘涂层，其特征在于，所述有机溶剂为丙酮、无水乙醇、甲苯、二甲苯中的一种。The sintered NdFeB grain boundary diffusion anti-stick coating according to claim 1, wherein the organic solvent is one of acetone, absolute ethanol, toluene, and xylene.
  6. 根据权利要求1所述的烧结钕铁硼晶界扩散防粘涂层，其特征在于，所述防粘涂层的粒度为0.001-0.003mm，耐受温度为1000-1500℃。The sintered NdFeB grain boundary diffusion anti-sticking coating according to claim 1, characterized in that the particle size of the anti-sticking coating is 0.001-0.003mm, and the withstand temperature is 1000-1500°C.
  7. 一种烧结钕铁硼晶界扩散防粘涂层的应用，其特征在于，将防粘涂层应用于镀膜或者涂覆后的烧结钕铁硼中。An application of a sintered NdFeB grain boundary diffusion anti-stick coating, which is characterized in that the anti-stick coating is applied to the coated or coated sintered NdFeB.
  8. 根据权利要求7所述的烧结钕铁硼晶界扩散防粘涂层的应用，其特征在于，将所述底层喷涂到镀膜或者涂覆后的烧结钕铁硼表面，然后喷涂面层，底层实现面层和镀膜或者涂覆后的烧结钕铁硼的粘连。The application of the sintered NdFeB grain boundary diffusion anti-sticking coating according to claim 7, characterized in that the bottom layer is sprayed onto the surface of the sintered NdFeB after coating or coating, and then the surface layer is sprayed, and the bottom layer realizes Adhesion of surface layer and coating or coated sintered NdFeB.
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