WO2021143473A1 - 一种导电高聚物复合永磁导电触头及其制造方法 - Google Patents
一种导电高聚物复合永磁导电触头及其制造方法 Download PDFInfo
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
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- the invention relates to the technical field of electrical devices, in particular to a conductive polymer composite permanent magnetic conductive contact and a manufacturing method thereof.
- Conductive magnetic polymers made by doping conductive fillers and magnetic fillers in high polymers have attracted wide attention due to their excellent mechanical, thermal, magnetic functions and conductive properties, and can be applied to conductive contacts in special scenarios structure.
- the polymer conductive contacts in the prior art are either relatively brittle, have poor bonding strength, have no permanent magnetic properties, or have poor ability to withstand cyclic stress, and all have their applicable limitations.
- the invention aims to provide a method for manufacturing a conductive polymer composite permanent magnetic conductive contact with a good nature, softness, light weight, fatigue resistance, impact resistance, corrosion resistance, and good fit.
- a method for manufacturing a conductive polymer composite permanent magnetic conductive contact includes the following steps:
- auxiliary materials prepare a sufficient amount of a mixture of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, and a sufficient amount of aqueous hydrochloric acid with a mass fraction of 10% solute;
- step 1 The polypropylene and starch grafted with sodium acrylate prepared in step 1) step 1 are mechanically blended into the original mixed glue pool;
- step 1 Completely immerse the carbon fiber aluminum core composite wire prepared in step 1) in step 1 into the mixed solution of concentrated sulfuric acid and concentrated nitric acid prepared in step 2, and use 200W-250W ultrasonic treatment for 3.5h-4h to obtain carboxylated passivated composite wire , And then rinse the composite wire with clean water;
- step 2 Immerse the carboxylated and passivated composite wire obtained in step 1 into the hydrochloric acid aqueous solution prepared in step 2, immerse the hydrochloric acid aqueous solution in an ice bath at -5°C ⁇ -10°C, and turn it on at a rate of 120rpm/min-150rpm/min Stir, and then sequentially react with the thionyl chloride and phenylenediamine prepared in step 1) to stabilize, and finally put into the reaction solution at a mass rate of 10%/min.
- step 1 1) the ammonium persulfate initiator prepared in step 1 , Stir for 40min-50min, take out the reaction solution and let it stand in the refrigerator at -5°C ⁇ -10°C for 0.5 days to 1 day, filter out the solidified material, and rinse with ethanol and water until it is clean to obtain the modified composite wire ;
- step 1 Heat the silver powder prepared in step 1) to melt, and then evenly spray it on the surface of the original core obtained in step 2), and solidify the combined structure after condensing to obtain a combined permanent magnetic core conductor core;
- a conductive polymer composite permanent magnetic conductive contact The composite permanent magnetic conductive contact consists of three parts: a sleeve, a conductive core and a coil.
- the magnetic core in the conductive core is brushed with a silver layer on the surface.
- Conductive core The composite structure of the conductive core is NdFeB magnetic powder and graphite powder through polypropylene and starch grafted sodium acrylate blend glue to encapsulate and solidify; the coil is aniline modified carbon fiber aluminum wound on the inner surface of the sleeve Core composite wire.
- the present invention has the following advantages: (1)
- the special magnetic core of the present invention uses polypropylene as a matrix, graphite and neodymium iron boron magnetic materials as fillers, and prepares conductive composite materials through melt blending and injection molding, that is, wrapped and packaged with flexible conductive materials
- the density of all the materials of the present invention is far less than that of conventional metal materials, and the weight is light. Therefore, the kinetic energy required to trigger the motion of the present invention is lower than that of conventional technology, and it has obtained more High reliability (that is, lower power output can be triggered) and lower energy consumption.
- the core of the present invention is a flexible collision body, and at the same time, it is light in weight, has low impact kinetic energy, and has flexible cushioning. Therefore, the present invention has good impact resistance.
- the wrapping material matrix of the present invention is polypropylene with stable chemical properties, and the functional auxiliary materials are also oil-resistant, acid- and alkali-resistant materials. Therefore, the present invention is significantly better than the contact structure realized by metal materials. Corrosion resistance, higher reliability, and longer service life. Therefore, the present invention has the characteristics of inherent softness, light weight, fatigue resistance, impact resistance, corrosion resistance and good fit.
- a conductive polymer composite permanent magnetic conductive contact The composite permanent magnetic conductive contact consists of three parts: a sleeve, a conductive core and a coil.
- the magnetic core in the conductive core is brushed with a silver layer on the surface.
- Conductive core The composite structure of the conductive core is NdFeB magnetic powder and graphite powder through polypropylene and starch grafted sodium acrylate blend glue to encapsulate and solidify;
- the coil is aniline modified carbon fiber aluminum wound on the inner surface of the sleeve Core composite wire;
- the manufacturing method of the composite permanent magnetic conductive contact includes the following steps:
- auxiliary materials prepare a sufficient amount of a mixture of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, and a sufficient amount of hydrochloric acid aqueous solution with a mass fraction of 10% solute;
- step 1 The polypropylene and starch grafted with sodium acrylate prepared in step 1) step 1 are mechanically blended into the original mixed glue pool;
- step 1 Completely immerse the carbon fiber aluminum core composite wire prepared in step 1) in step 1 into the mixed solution of concentrated sulfuric acid and concentrated nitric acid prepared in step 2, and use 200W-250W ultrasonic treatment for 3.5h-4h to obtain carboxylated passivated composite wire , And then rinse the composite wire with clean water;
- step 2 Immerse the carboxylated and passivated composite wire obtained in step 1 into the hydrochloric acid aqueous solution prepared in step 2, immerse the hydrochloric acid aqueous solution in an ice bath at -5°C ⁇ -10°C, and turn it on at a rate of 120rpm/min-150rpm/min Stir, and then sequentially react with the thionyl chloride and phenylenediamine prepared in step 1) to stabilize, and finally put into the reaction solution at a mass rate of 10%/min.
- step 1 1) the ammonium persulfate initiator prepared in step 1 , Stir for 40min-50min, take out the reaction solution and let it stand in the refrigerator at -5°C ⁇ -10°C for 0.5 days to 1 day, filter out the solidified material, and rinse with ethanol and water until it is clean to obtain the modified composite wire ;
- step 1 Heat the silver powder prepared in step 1) to melt, and then evenly spray it on the surface of the original core obtained in step 2), and solidify the combined structure after condensing to obtain a combined permanent magnetic core conductor core;
- 1Material preparation prepare 20g rubidium-iron-boron magnetic core, sufficient thionyl chloride, sufficient phenylenediamine, 120g polypropylene, 1.5g starch grafted sodium acrylate, 8g graphite powder, 8g silver powder, and sufficient carbon fiber in parts by weight Aluminum core composite wire, 0.5g ammonium persulfate initiator, fixed sleeve;
- the wrapping material matrix of the present invention is polypropylene with stable chemical properties, and the functional auxiliary materials are all oil-resistant, acid- and alkali-resistant materials. Therefore, the present invention is significantly more resistant to corrosion than the contact structure realized by metal materials. Higher reliability and longer service life. Therefore, the present invention has the characteristics of inherent softness, light weight, fatigue resistance, impact resistance, corrosion resistance and good fit.
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Abstract
一种导电高聚物复合永磁导电触头及其制造方法，该触头由套筒、导电芯体和线圈三部分组成；导电芯体中的磁芯为表面刷涂了银层的导电芯体，导电芯体内复合的结构为钕铁硼磁粉、石墨粉通过聚丙烯、淀粉接枝丙烯酸钠共混胶封装固化而成；线圈为卷绕在套筒内表面的苯胺改性碳纤维铝芯复合导线。该触头本质柔软、质量轻、抗疲劳、抗冲击、耐腐蚀、贴合好。
Description
本发明涉及电气装置技术领域，尤其涉及一种导电高聚物复合永磁导电触头及其制造方法。
随着电子技术的飞速发展，电子电器微型化、高储能化程度提高，相关元器件的应用环境更加复杂，这就要求电介质材料具有良好的加工性能和介电性能。在高聚物中掺杂导电填料和磁性填料制成的导电磁性高聚物，因其具备优良的力学、热学、磁性功能和导电特性而得到广泛关注，可应用于特殊场景下的导电触头结构。
而现有技术中的高聚物导电触头要么脆性较大、要么结合力差、要么不具备永磁性能、要么承受循环应力的能力差，均有其适用的限制。
因此，市面上急需一种本质柔软、质量轻、抗疲劳、抗冲击、耐腐蚀、贴合好的导电高聚物复合永磁导电触头及其制造方法。
本发明旨在提供一种本质柔软、质量轻、抗疲劳、抗冲击、耐腐蚀、贴合好的导电高聚物复合永磁导电触头制造方法。
为了实现上述目的，本发明采用以下技术方案：一种导电高聚物复合永磁导电触头的制造方法，包括以下步骤：
1）原料准备
①原材料准备：按重量份准备铷铁硼磁芯20份-25份、足量二氯亚砜、足量苯二胺、聚丙烯100-120份、淀粉接枝丙烯酸钠1份-1.5份、石墨粉5份-8份、银粉5份-8份、足量碳纤维铝芯复合导线、过硫酸铵引发剂0.2份-0.5份、固定套筒；
②辅材准备：准备足量按体积比3：1配比的浓硫酸与浓硝酸的混合液，足量10%溶质质量分数的盐酸水溶液；
2）原始芯体准备
①将阶段1）步骤①准备的聚丙烯、淀粉接枝丙烯酸钠以机械共混的方式制成原始混合胶熔池；
②将阶段1）步骤①准备的铷铁硼磁芯球磨成1000目-2000目的粉末，获得磁性粉末；
③在步骤①获得的原始混合胶熔池内逐渐加入步骤②获得的磁性粉末以及阶段1）步骤①准备的石墨粉，并搅拌均匀，然后注塑成按设计所需磁芯轮廓尺寸放大10%的圆柱体形状，获得原始芯体；
3）导线制备
①将阶段1）步骤①准备的碳纤维铝芯复合导线完全浸入阶段1）步骤②准备的浓硫酸与浓硝酸的混合液，采用200W-250W超声波处理3.5h-4h，获得羧化钝化复合导线，然后采用清水将复合导线漂洗干净；
②将步骤①获得的羧化钝化复合导线浸入阶段1）步骤②准备的盐酸水溶液中，将盐酸水溶液浸入-5℃~-10℃的冰浴，以120rpm/min-150rpm/min的速率开启搅拌，然后依次与阶段1）步骤①准备的二氯亚砜和苯二胺反应至稳定，最后以10%/min的质量速率在反应液中投入阶段1）步骤①准备的过硫酸铵引发剂，搅拌40min-50min，取出反应液将其在-5℃~-10℃冰箱内静置0.5天-1天，滤出固化物，并采用乙醇与水分别漂洗至漂洗干净，获得改性复合导线；
4）芯体准备
①将阶段1）步骤①准备的银粉加热至融化，然后均匀喷涂在阶段2）获得的原始芯体表面，待凝结后固化组合结构，获得组合永磁芯导体磁芯；
5） 导电高聚物复合永磁导电触头成型
①将阶段4）获得的组合永磁芯导体磁芯作为移动芯体，套装在阶段1）步骤①准备的固定套筒中间，再将阶段3）获得的改性复合导线剪去首尾端后紧贴套筒内表面卷绕，卷绕后的改性复合导线与移动芯体不接触，将获得的整体结合固定后即获得所需导电高聚物复合永磁导电触头。
一种导电高聚物复合永磁导电触头，该复合永磁导电触头由三部分组成：套筒、导电芯体和线圈，其中导电芯体中的磁芯为表面刷涂了银层的导电芯体，导电芯体内复合的结构为钕铁硼磁粉、石墨粉通过聚丙烯、淀粉接枝丙烯酸钠共混胶封装固化而成；线圈为卷绕在套筒内表面的苯胺改性碳纤维铝芯复合导线。
本发明具有以下优点：（1）本发明特制的磁芯以聚丙烯为基体，石墨和钕铁硼磁性材料为填料，通过熔融共混、注塑成型制备导电复合材料，即以柔性导电材料包裹封装的可移动永磁导电复合芯体，以及与复合材料匹配并引导永磁导电复合芯体做功的导电线圈，即获得了整体柔软的碰撞芯体，由于柔软碰撞面的存在，与目标端自适应贴合，因而不会存在传统触头因老化后机械性能降低或触头变形导致的接触不良，因此使用寿命长且贴合性好。（2）除了作为永磁材料的磁芯以及银涂层外，本发明所有材料的密度均远小于常规的金属材料，质量轻，因此引发本发明运动的动能需求低于常规技术，获得了更高的可靠性（即更低的电能输出都能引发）和更低的能耗。（3）本发明的芯体为柔性碰撞体，同时本身质量轻，冲击动能本来就低，兼有柔性缓冲，因而本发明具有良好的抗冲击性能。（4）本发明的包裹材料基体为本身化学性质稳定的聚丙烯，然后功能辅料也均为耐油、耐酸碱的材料，因此本发明相对于以金属材料实现的触头结构而言，明显更耐腐蚀，可靠性更高，使用寿命更长。因此，本发明具有本质柔软、质量轻、抗疲劳、抗冲击、耐腐蚀、贴合好的特性。
实施例1：
一种导电高聚物复合永磁导电触头，该复合永磁导电触头由三部分组成：套筒、导电芯体和线圈，其中导电芯体中的磁芯为表面刷涂了银层的导电芯体，导电芯体内复合的结构为钕铁硼磁粉、石墨粉通过聚丙烯、淀粉接枝丙烯酸钠共混胶封装固化而成；线圈为卷绕在套筒内表面的苯胺改性碳纤维铝芯复合导线；该复合永磁导电触头的制造方法包括以下步骤：
1）原料准备
①原材料准备：按重量份准备铷铁硼磁芯23g、足量二氯亚砜、足量苯二胺、聚丙烯114g、淀粉接枝丙烯酸钠1.2g、石墨粉7g、银粉6.8g、足量碳纤维铝芯复合导线、过硫酸铵引发剂0.4g、固定套筒；
②辅材准备：准备足量按体积比3：1配比的浓硫酸与浓硝酸的混合液，足量10%溶质质量分数的盐酸水溶液；
2）原始芯体准备
①将阶段1）步骤①准备的聚丙烯、淀粉接枝丙烯酸钠以机械共混的方式制成原始混合胶熔池；
②将阶段1）步骤①准备的铷铁硼磁芯球磨成1000目-2000目的粉末，获得磁性粉末；
③在步骤①获得的原始混合胶熔池内逐渐加入步骤②获得的磁性粉末以及阶段1）步骤①准备的石墨粉，并搅拌均匀，然后注塑成按设计所需磁芯轮廓尺寸放大10%的圆柱体形状，获得原始芯体；
3）导线制备
①将阶段1）步骤①准备的碳纤维铝芯复合导线完全浸入阶段1）步骤②准备的浓硫酸与浓硝酸的混合液，采用200W-250W超声波处理3.5h-4h，获得羧化钝化复合导线，然后采用清水将复合导线漂洗干净；
②将步骤①获得的羧化钝化复合导线浸入阶段1）步骤②准备的盐酸水溶液中，将盐酸水溶液浸入-5℃~-10℃的冰浴，以120rpm/min-150rpm/min的速率开启搅拌，然后依次与阶段1）步骤①准备的二氯亚砜和苯二胺反应至稳定，最后以10%/min的质量速率在反应液中投入阶段1）步骤①准备的过硫酸铵引发剂，搅拌40min-50min，取出反应液将其在-5℃~-10℃冰箱内静置0.5天-1天，滤出固化物，并采用乙醇与水分别漂洗至漂洗干净，获得改性复合导线；
4）芯体准备
①将阶段1）步骤①准备的银粉加热至融化，然后均匀喷涂在阶段2）获得的原始芯体表面，待凝结后固化组合结构，获得组合永磁芯导体磁芯；
5）导电高聚物复合永磁导电触头成型
①将阶段4）获得的组合永磁芯导体磁芯作为移动芯体，套装在阶段1）步骤①准备的固定套筒中间，再将阶段3）获得的改性复合导线剪去首尾端后紧贴套筒内表面卷绕，卷绕后的改性复合导线与移动芯体不接触，将获得的整体结合固定后即获得所需导电高聚物复合永磁导电触头。
实施例2：
整体与实施例1一致，差异之处在于：
①原材料准备：按重量份准备铷铁硼磁芯25g、足量二氯亚砜、足量苯二胺、聚丙烯100g、淀粉接枝丙烯酸钠1g、石墨粉5g、银粉5g、足量碳纤维铝芯复合导线、过硫酸铵引发剂0.2g、固定套筒；
实施例3：
整体与实施例1一致，差异之处在于：
①材料准备：按重量份准备铷铁硼磁芯20g、足量二氯亚砜、足量苯二胺、聚丙烯120g、淀粉接枝丙烯酸钠1.5g、石墨粉8g、银粉8g、足量碳纤维铝芯复合导线、过硫酸铵引发剂0.5g、固定套筒；
本发明的包裹材料基体为本身化学性质稳定的聚丙烯，然后功能辅料也均为耐油、耐酸碱的材料，因此本发明相对于以金属材料实现的触头结构而言，明显更耐腐蚀，可靠性更高，使用寿命更长。因此，本发明具有本质柔软、质量轻、抗疲劳、抗冲击、耐腐蚀、贴合好的特性。
对所公开的实施例的上述说明，仅为了使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。
Claims (2)
- 一种导电高聚物复合永磁导电触头的制造方法，其特征在于包括以下步骤：1）原料准备①原材料准备：按重量份准备铷铁硼磁芯20份-25份、足量二氯亚砜、足量苯二胺、聚丙烯100-120份、淀粉接枝丙烯酸钠1份-1.5份、石墨粉5份-8份、银粉5份-8份、足量碳纤维铝芯复合导线、过硫酸铵引发剂0.2份-0.5份、固定套筒；②辅材准备：准备足量按体积比3：1配比的浓硫酸与浓硝酸的混合液，足量10%溶质质量分数的盐酸水溶液；2）原始芯体准备①将阶段1）步骤①准备的聚丙烯、淀粉接枝丙烯酸钠以机械共混的方式制成原始混合胶熔池；②将阶段1）步骤①准备的铷铁硼磁芯球磨成1000目-2000目的粉末，获得磁性粉末；③在步骤①获得的原始混合胶熔池内逐渐加入步骤②获得的磁性粉末以及阶段1）步骤①准备的石墨粉，并搅拌均匀，然后注塑成按设计所需磁芯轮廓尺寸放大10%的圆柱体形状，获得原始芯体；3）导线制备①将阶段1）步骤①准备的碳纤维铝芯复合导线完全浸入阶段1）步骤②准备的浓硫酸与浓硝酸的混合液，采用200W-250W超声波处理3.5h-4h，获得羧化钝化复合导线，然后采用清水将复合导线漂洗干净；②将步骤①获得的羧化钝化复合导线浸入阶段1）步骤②准备的盐酸水溶液中，将盐酸水溶液浸入-5℃~-10℃的冰浴，以120rpm/min-150rpm/min的速率开启搅拌，然后依次与阶段1）步骤①准备的二氯亚砜和苯二胺反应至稳定，最后以10%/min的质量速率在反应液中投入阶段1）步骤①准备的过硫酸铵引发剂，搅拌40min-50min，取出反应液将其在-5℃~-10℃冰箱内静置0.5天-1天，滤出固化物，并采用乙醇与水分别漂洗至漂洗干净，获得改性复合导线；4）芯体准备①将阶段1）步骤①准备的银粉加热至融化，然后均匀喷涂在阶段2）获得的原始芯体表面，待凝结后固化组合结构，获得组合永磁芯导体磁芯；5）导电高聚物复合永磁导电触头成型①将阶段4）获得的组合永磁芯导体磁芯作为移动芯体，套装在阶段1）步骤①准备的固定套筒中间，再将阶段3）获得的改性复合导线剪去首尾端后紧贴套筒内表面卷绕，卷绕后的改性复合导线与移动芯体不接触，将获得的整体结合固定后即获得所需导电高聚物复合永磁导电触头。
- 一种导电高聚物复合永磁导电触头，其特征在于：该复合永磁导电触头由三部分组成：套筒、导电芯体和线圈，其中导电芯体中的磁芯为表面刷涂了银层的导电芯体，导电芯体内复合的结构为钕铁硼磁粉、石墨粉通过聚丙烯、淀粉接枝丙烯酸钠共混胶封装固化而成；线圈为卷绕在套筒内表面的苯胺改性碳纤维铝芯复合导线。
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| CN87216550U (zh) * | 1987-12-16 | 1988-10-26 | 中国科学院武汉岩土力学研究所 | 高载频差动电感位移传感器 |
| JPH0483318A (ja) * | 1990-07-25 | 1992-03-17 | Ckd Corp | ソレノイド製造方法 |
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| CN105257750A (zh) * | 2015-11-19 | 2016-01-20 | 西安空间无线电技术研究所 | 一种多模态电磁吸振器 |
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| CN87216550U (zh) * | 1987-12-16 | 1988-10-26 | 中国科学院武汉岩土力学研究所 | 高载频差动电感位移传感器 |
| JPH0483318A (ja) * | 1990-07-25 | 1992-03-17 | Ckd Corp | ソレノイド製造方法 |
| CN1739176A (zh) * | 2002-11-19 | 2006-02-22 | 亨特来夫工业技术公开发行股份有限公司 | 带电感耦合器的连接器 |
| CN102214536A (zh) * | 2010-04-07 | 2011-10-12 | 张洪彬 | 一种节能交流接触器 |
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