TWI748314B - Microwave-assisted process for manufacturing high-carbon porous nickel ball - Google Patents
Microwave-assisted process for manufacturing high-carbon porous nickel ball Download PDFInfo
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- TWI748314B TWI748314B TW108147932A TW108147932A TWI748314B TW I748314 B TWI748314 B TW I748314B TW 108147932 A TW108147932 A TW 108147932A TW 108147932 A TW108147932 A TW 108147932A TW I748314 B TWI748314 B TW I748314B
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本發明係關於一種以微波輔助製造高碳多孔鎳金屬球的方法，尤指一種以微波加熱碳粉與一氧化鎳粉之混合物使之成多孔鎳金屬球的方法。 The invention relates to a method for manufacturing high-carbon porous nickel metal balls with the aid of microwaves, in particular to a method for heating a mixture of carbon powder and nickel monoxide powder by microwaves to form porous nickel metal balls.
請參考公告號第CN106622248B，該案提出了一種多孔鎳與碳的複合物及其製備方法，該案係在多孔鎳的表面包覆有連續的碳層，並在碳層上有微孔；碳上有氫、氧、氮等官能團中的一種或多種；其製備方法為將多孔鎳在化學氣相沉積裝置中，在高溫下通入碳源或碳源與氮源等混合物，在一定時間內可在多孔鎳表面生成連續的碳層，但該案只在多孔鎳的表面形成碳層，且表面形成之碳層並無發泡功能。 Please refer to Announcement No. CN106622248B. This case proposes a composite of porous nickel and carbon and its preparation method. The case is to coat the surface of porous nickel with a continuous carbon layer and have micropores on the carbon layer; There are one or more of functional groups such as hydrogen, oxygen, and nitrogen; its preparation method is to pass porous nickel into a chemical vapor deposition device at high temperature and pass a carbon source or a mixture of carbon and nitrogen sources, within a certain period of time A continuous carbon layer can be formed on the surface of porous nickel, but this case only forms a carbon layer on the surface of porous nickel, and the carbon layer formed on the surface has no foaming function.
爰此，本發明人提出一種以微波輔助製造高碳多孔鎳金屬球的方法，包括下列步驟：將一碳粉與一氧化鎳粉混合攪拌成一混合物；將該混合物微波加熱生成一高碳多孔鎳金屬球，使該高碳多孔鎳金屬球含碳量重量百分比係介於0.6%至10%之間；將該微波加熱反應後剩餘之該碳粉分離。 In summary, the present inventor proposes a microwave-assisted method for manufacturing high-carbon porous nickel metal balls, which includes the following steps: mixing and stirring a carbon powder and nickel monoxide powder to form a mixture; microwave heating the mixture to produce a high-carbon porous nickel The metal ball makes the carbon content of the high-carbon porous nickel metal ball between 0.6% and 10% by weight; the carbon powder remaining after the microwave heating reaction is separated.
進一步，使反應後之該混合物通過一濾網，以分離剩餘之該碳粉。 Further, the mixture after the reaction is passed through a filter screen to separate the remaining carbon powder.
進一步，再利用磁選方式將該高碳多孔鎳金屬球分離。 Further, the high-carbon porous nickel metal ball is separated by a magnetic separation method.
進一步，該碳粉與該氧化鎳粉之重量比例介於2.5至3.5：1.5至2.5之間。 Further, the weight ratio of the carbon powder to the nickel oxide powder is between 2.5 to 3.5: 1.5 to 2.5.
進一步，該高碳多孔鎳金屬球之孔隙率介於3%至30%之間。 Furthermore, the porosity of the high-carbon porous nickel metal ball is between 3% and 30%.
進一步，該微波時間係介於12-18分鐘之間，該高碳多孔鎳金屬球之尺寸介於1mm至6mm之間，高碳多孔鎳金屬球中的孔洞尺寸介於5μm至120μm之間，且該微波頻率係介於800MHZ-2470MHZ之間。 Further, the microwave time is between 12-18 minutes, the size of the high-carbon porous nickel metal ball is between 1mm and 6mm, and the size of the holes in the high-carbon porous nickel metal ball is between 5μm and 120μm. And the microwave frequency is between 800MHZ-2470MHZ.
根據上述技術特徵可達成以下功效： According to the above technical features, the following effects can be achieved:
1.該高碳多孔鎳金屬球具有良好的孔隙率，多孔結構可達到輕量化功效，以及可吸收隔音及隔絕熱等功效。 1. The high-carbon porous nickel metal ball has good porosity, and the porous structure can achieve lightweight effects, and can absorb sound insulation and heat insulation.
2.利用微波當作一加熱熱源，並加入該碳粉，可使碳粉除了吸收微波加熱使還原反應產生外，當溫度高過碳粉燃點時，碳粉會自然提供大量燃燒熱，使還原成金屬鎳反應(吸熱反應，高溫有利反應加速)加速，本案更進一步加入過量的碳，使碳粉在反應過程被包覆在生成的鎳液微滴中，在高溫中，此球內碳粉高溫受熱成二氧化碳，使包覆在球體內部的碳氧化增加近1000倍的體積，形成氣泡，碳粉具發泡功能，為發泡劑。 2. Using microwave as a heating source and adding the carbon powder, the carbon powder can not only absorb microwave heating to produce the reduction reaction, when the temperature is higher than the ignition point of the carbon powder, the carbon powder will naturally provide a large amount of combustion heat to reduce The metal nickel reaction (endothermic reaction, high temperature facilitates the acceleration of the reaction) accelerates. In this case, excess carbon is further added, so that the carbon powder is coated in the generated nickel droplets during the reaction process. At high temperatures, the carbon powder in the ball The high temperature heats into carbon dioxide, which increases the volume of the carbon coated inside the sphere by nearly 1,000 times, forming bubbles. The carbon powder has a foaming function and is a foaming agent.
3.本案更進一步加入過量的碳，有足夠碳粉在反應過程分散在生成的鎳液微滴外圍，隔開鎳液微滴，使鎳液微滴如同水銀成球，內聚力大於表面張力，碳粉扮演鎳液滴隔離劑的功能。 3. In this case, an excess of carbon is added further, enough carbon powder is dispersed around the nickel liquid droplets generated during the reaction process to separate the nickel liquid droplets, so that the nickel liquid droplets are like mercury spheres, and the cohesion is greater than the surface tension. The powder acts as a release agent for nickel droplets.
4.該金屬球型態有利於應力的分散，避免表面尖端應力集中產生裂縫。 4. The metal ball shape is conducive to the dispersion of stress and avoids cracks caused by stress concentration at the surface tip.
5.該金屬球內部的氣孔是球形型態有利於應力的分散，避免因為多孔而易於脆化。 5. The spherical shape of the pores inside the metal ball facilitates the dispersion of stress and avoids easy embrittlement due to porosity.
[第一圖]係本發明實施例之實驗流程圖。 [The first figure] is an experimental flowchart of an embodiment of the present invention.
[第二圖]係本發明實施例之高碳多孔鎳金屬球與微波加熱反應後剩餘之碳粉示意圖。 [Second Figure] is a schematic diagram of the carbon powder remaining after the high-carbon porous nickel metal ball reacts with microwave heating according to the embodiment of the present invention.
[第三圖]係本發明實施例之高碳多孔鎳金屬球外觀示意圖。 [Third Figure] is a schematic diagram of the appearance of a high-carbon porous nickel metal ball according to an embodiment of the present invention.
[第四圖]係本發明實施例之高碳多孔鎳金屬球表面具有多孔隙之外觀示意圖。 [Fourth Figure] is a schematic diagram of the appearance of the porous nickel metal ball with porous surface of the embodiment of the present invention.
綜合上述技術特徵，本發明以微波輔助製造高碳多孔鎳金屬球的方法的主要功效將可於下述實施例清楚呈現。 Based on the above technical features, the main effects of the microwave-assisted method for manufacturing high-carbon porous nickel metal balls of the present invention will be clearly presented in the following embodiments.
請參閱第一圖所示，本發明實施例步驟如下：取一碳粉與一氧化鎳粉混合，混合之重量比例介於2.5至3.5：1.5至2.5之間，本實施例取該碳粉6公克與該氧化鎳粉4公克，混合攪拌成一混合物，將該混合物微波加熱生成一高碳多孔鎳金屬球，且該微波頻率係介於800MHZ-2470MHZ之間，加熱時間介於12-18分鐘之間，本實施例是採用15分鐘作為加熱時間，再將該微波加熱反應後剩餘之該碳粉過濾。 Please refer to the first figure. The steps of the embodiment of the present invention are as follows: take a carbon powder and nickel monoxide powder and mix, the mixing weight ratio is between 2.5 to 3.5: 1.5 to 2.5, this embodiment takes the carbon powder 6 Gram and 4 grams of the nickel oxide powder are mixed and stirred to form a mixture. The mixture is microwave-heated to generate a high-carbon porous nickel metal ball. The microwave frequency is between 800MHZ-2470MHZ, and the heating time is between 12-18 minutes. Meanwhile, in this embodiment, 15 minutes is used as the heating time, and the carbon powder remaining after the microwave heating reaction is filtered.
請參閱第二圖及第三圖所示，本實施例係用該碳粉作為一還原劑，可吸收微波快速加熱，增快反應時間，也可降低該氧化鎳粉熔點溫度，微波加熱反應後產生該高碳多孔鎳金屬球，再利用過濾方式，將微波加熱反應後剩餘之該碳粉濾除，其中，此過濾方式只能過濾體積較小之該碳粉，另外，再利用磁力將該高碳多孔鎳金屬球吸附之磁篩方式，將該高碳多孔鎳金屬球篩出。 Please refer to the second and third diagrams. In this embodiment, the carbon powder is used as a reducing agent, which can absorb microwaves for rapid heating, increase the reaction time, and reduce the melting point temperature of the nickel oxide powder. Produce the high-carbon porous nickel metal ball, and then use the filter method to filter out the carbon powder remaining after the microwave heating reaction. Among them, this filter method can only filter the carbon powder with a small volume. In addition, the magnetic force is used to remove the carbon powder. The high-carbon porous nickel metal ball is adsorbed by a magnetic sieve method to sieve out the high-carbon porous nickel metal ball.
請參閱第四圖所示，該高碳多孔鎳金屬球呈現多孔結構，該高碳多孔鎳金屬球之孔隙率介於3%至30%之間，具輕量化的效果，且可隔絕電磁波，及作為一吸音材質及一隔熱材質。 Please refer to the fourth figure. The high-carbon porous nickel metal ball has a porous structure. The porosity of the high-carbon porous nickel metal ball is between 3% and 30%. It has a lightweight effect and can cut off electromagnetic waves. And as a sound-absorbing material and a heat-insulating material.
綜合上述實施例之說明，當可充分瞭解本發明之操作、使用及本發明產生之功效，惟以上所述實施例僅係為本發明之較佳實施例，當不能以此 限定本發明實施之範圍，即依本發明申請專利範圍及發明說明內容所作簡單的等效變化與修飾，皆屬本發明涵蓋之範圍內。 Based on the description of the above-mentioned embodiments, when one can fully understand the operation, use, and effects of the present invention, the above-mentioned embodiments are only the preferred embodiments of the present invention. Limiting the scope of implementation of the present invention, that is, simple equivalent changes and modifications based on the scope of the patent application and the description of the invention, are all within the scope of the present invention.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323909A (en) * | 2008-07-17 | 2008-12-17 | 东北大学 | Method of microwave selective reduction roasting-dilute acid leaching nickel oxide ore |
| US20110020662A1 (en) * | 2009-07-22 | 2011-01-27 | Kazutaka Okamoto | Sintered porous metal body and a method of manufacturing the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323909A (en) * | 2008-07-17 | 2008-12-17 | 东北大学 | Method of microwave selective reduction roasting-dilute acid leaching nickel oxide ore |
| US20110020662A1 (en) * | 2009-07-22 | 2011-01-27 | Kazutaka Okamoto | Sintered porous metal body and a method of manufacturing the same |
Non-Patent Citations (3)
| Title |
|---|
| Gunawan Gunawan et al., 2011. Novel Microwave-Assisted Synthesis of Nickel/Carbon (Ni/C) Nanocomposite with Tannin as the Carbon Source, Journal of Wood Chemistry and Technology, Vol. 31, page: 345-356. |
| Gunawan Gunawan et al., 2011. Novel Microwave-Assisted Synthesis of Nickel/Carbon (Ni/C) Nanocomposite with Tannin as the Carbon Source, Journal of Wood Chemistry and Technology, Vol. 31, page: 345-356.; * |
| Song Qiu et al., 2016. Facile Synthesis of Porous Nickel/Carbon Composite Microspheres with Enhanced Electromagnetic Wave Absorption by Magnetic and Dielectric Losses, Applied Materials& Interfaces, Vol. 8, page: 20258-20266. * |
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