PROCESS FOR PREPARING MAGNETIC NANOFLUID IN VEGETABLE OIL
The invention relates to a process for preparing a magnetic nanofluid to be used as an insulation fluid and cooling medium in power transformers. According to the invention, the process comprises the synthesis of magnetic nanoparticles FeOby the hydrothermal method, hydrophobic steric stabilization...
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| creator | MANTA EUGEN MĂLĂERU TEODORA GEORGESCU GABRIELA PĂTROI EROS ALEXANDRU PĂTROI DELIA |
| description | The invention relates to a process for preparing a magnetic nanofluid to be used as an insulation fluid and cooling medium in power transformers. According to the invention, the process comprises the synthesis of magnetic nanoparticles FeOby the hydrothermal method, hydrophobic steric stabilization by coating with a polymeric coat, using ultrasonication emulsifying method and dispersion of the coated synthesised nanoparticles into oil, where the suspension has volume concentrations of 0.3...1.5% magnetic nanoparticles, it is subjected to ultrasonication for 4...8 h at the ambient temperature, to result in a magnetic fluid having a saturation magnetization of 1.85...3.08 emu/g, a remanent magnetization of 0.72...0.90 emu/g and a coercive field of 235...268.9 Oe.
Invenţia se referă la un procedeu de obţinere a unui nanofluid magnetic, utilizat ca fluid izolator şi agent de răcire la transformatoare de putere. Procedeul conform invenţiei constă în sinteza de nanoparticule magnetice de FeOprin metoda hidrotermală, stabilizarea sterică hidrofobă, prin acoperire cu un înveliş polimeric, prin metoda emulsionării cu ultrasonare, şi dispersia în ulei a nanoparticulelor sintetizate acoperite, suspensia având concentraţii volumice de 0,3...1,5% nanoparticule magnetice, se ultrasonează timp de 4...8 h la temperatura camerei, rezultând un fluid magnetic având o magnetizaţie la saturaţie de 1,85...3,08 emu/g, magnetizaţie remanentă 0,72...0,90 emu/g şi câmp coercitiv 235...268,9 Oe. |
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Invenţia se referă la un procedeu de obţinere a unui nanofluid magnetic, utilizat ca fluid izolator şi agent de răcire la transformatoare de putere. Procedeul conform invenţiei constă în sinteza de nanoparticule magnetice de FeOprin metoda hidrotermală, stabilizarea sterică hidrofobă, prin acoperire cu un înveliş polimeric, prin metoda emulsionării cu ultrasonare, şi dispersia în ulei a nanoparticulelor sintetizate acoperite, suspensia având concentraţii volumice de 0,3...1,5% nanoparticule magnetice, se ultrasonează timp de 4...8 h la temperatura camerei, rezultând un fluid magnetic având o magnetizaţie la saturaţie de 1,85...3,08 emu/g, magnetizaţie remanentă 0,72...0,90 emu/g şi câmp coercitiv 235...268,9 Oe.</description><language>eng ; rum</language><subject>ADHESIVES ; CHEMISTRY ; CRACKING HYDROCARBON OILS ; DYES ; FUELS ; LUBRICANTS ; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES ; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE ; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES ; METALLURGY ; MINERAL WAXES ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NANOTECHNOLOGY ; NATURAL RESINS ; PAINTS ; PEAT ; PERFORMING OPERATIONS ; PETROLEUM, GAS OR COKE INDUSTRIES ; POLISHES ; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION ; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES ; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS ; REFORMING OF NAPHTHA ; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES ; TECHNICAL GASES CONTAINING CARBON MONOXIDE ; TRANSPORTING</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180330&DB=EPODOC&CC=RO&NR=132439A2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76292</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20180330&DB=EPODOC&CC=RO&NR=132439A2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MANTA EUGEN</creatorcontrib><creatorcontrib>MĂLĂERU TEODORA</creatorcontrib><creatorcontrib>GEORGESCU GABRIELA</creatorcontrib><creatorcontrib>PĂTROI EROS ALEXANDRU</creatorcontrib><creatorcontrib>PĂTROI DELIA</creatorcontrib><title>PROCESS FOR PREPARING MAGNETIC NANOFLUID IN VEGETABLE OIL</title><description>The invention relates to a process for preparing a magnetic nanofluid to be used as an insulation fluid and cooling medium in power transformers. According to the invention, the process comprises the synthesis of magnetic nanoparticles FeOby the hydrothermal method, hydrophobic steric stabilization by coating with a polymeric coat, using ultrasonication emulsifying method and dispersion of the coated synthesised nanoparticles into oil, where the suspension has volume concentrations of 0.3...1.5% magnetic nanoparticles, it is subjected to ultrasonication for 4...8 h at the ambient temperature, to result in a magnetic fluid having a saturation magnetization of 1.85...3.08 emu/g, a remanent magnetization of 0.72...0.90 emu/g and a coercive field of 235...268.9 Oe.
Invenţia se referă la un procedeu de obţinere a unui nanofluid magnetic, utilizat ca fluid izolator şi agent de răcire la transformatoare de putere. Procedeul conform invenţiei constă în sinteza de nanoparticule magnetice de FeOprin metoda hidrotermală, stabilizarea sterică hidrofobă, prin acoperire cu un înveliş polimeric, prin metoda emulsionării cu ultrasonare, şi dispersia în ulei a nanoparticulelor sintetizate acoperite, suspensia având concentraţii volumice de 0,3...1,5% nanoparticule magnetice, se ultrasonează timp de 4...8 h la temperatura camerei, rezultând un fluid magnetic având o magnetizaţie la saturaţie de 1,85...3,08 emu/g, magnetizaţie remanentă 0,72...0,90 emu/g şi câmp coercitiv 235...268,9 Oe.</description><subject>ADHESIVES</subject><subject>CHEMISTRY</subject><subject>CRACKING HYDROCARBON OILS</subject><subject>DYES</subject><subject>FUELS</subject><subject>LUBRICANTS</subject><subject>MANUFACTURE OR TREATMENT OF NANOSTRUCTURES</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES</subject><subject>METALLURGY</subject><subject>MINERAL WAXES</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NANOTECHNOLOGY</subject><subject>NATURAL RESINS</subject><subject>PAINTS</subject><subject>PEAT</subject><subject>PERFORMING OPERATIONS</subject><subject>PETROLEUM, GAS OR COKE INDUSTRIES</subject><subject>POLISHES</subject><subject>PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION</subject><subject>RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES</subject><subject>REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS</subject><subject>REFORMING OF NAPHTHA</subject><subject>SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES</subject><subject>TECHNICAL GASES CONTAINING CARBON MONOXIDE</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLAMCPJ3dg0OVnDzD1IICHINcAzy9HNX8HV093MN8XRW8HP083fzCfV0UfD0UwhzdXcNcXTycVXw9_ThYWBNS8wpTuWF0twM8m6uIc4euqkF-fGpxQWJyal5qSXxQf6GxkYmxpaORsaEVQAA7F8n7A</recordid><startdate>20180330</startdate><enddate>20180330</enddate><creator>MANTA EUGEN</creator><creator>MĂLĂERU TEODORA</creator><creator>GEORGESCU GABRIELA</creator><creator>PĂTROI EROS ALEXANDRU</creator><creator>PĂTROI DELIA</creator><scope>EVB</scope></search><sort><creationdate>20180330</creationdate><title>PROCESS FOR PREPARING MAGNETIC NANOFLUID IN VEGETABLE OIL</title><author>MANTA EUGEN ; MĂLĂERU TEODORA ; GEORGESCU GABRIELA ; PĂTROI EROS ALEXANDRU ; PĂTROI DELIA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_RO132439A23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; rum</language><creationdate>2018</creationdate><topic>ADHESIVES</topic><topic>CHEMISTRY</topic><topic>CRACKING HYDROCARBON OILS</topic><topic>DYES</topic><topic>FUELS</topic><topic>LUBRICANTS</topic><topic>MANUFACTURE OR TREATMENT OF NANOSTRUCTURES</topic><topic>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</topic><topic>MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES</topic><topic>METALLURGY</topic><topic>MINERAL WAXES</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NANOTECHNOLOGY</topic><topic>NATURAL RESINS</topic><topic>PAINTS</topic><topic>PEAT</topic><topic>PERFORMING OPERATIONS</topic><topic>PETROLEUM, GAS OR COKE INDUSTRIES</topic><topic>POLISHES</topic><topic>PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION</topic><topic>RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES</topic><topic>REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS</topic><topic>REFORMING OF NAPHTHA</topic><topic>SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES</topic><topic>TECHNICAL GASES CONTAINING CARBON MONOXIDE</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>MANTA EUGEN</creatorcontrib><creatorcontrib>MĂLĂERU TEODORA</creatorcontrib><creatorcontrib>GEORGESCU GABRIELA</creatorcontrib><creatorcontrib>PĂTROI EROS ALEXANDRU</creatorcontrib><creatorcontrib>PĂTROI DELIA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MANTA EUGEN</au><au>MĂLĂERU TEODORA</au><au>GEORGESCU GABRIELA</au><au>PĂTROI EROS ALEXANDRU</au><au>PĂTROI DELIA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PROCESS FOR PREPARING MAGNETIC NANOFLUID IN VEGETABLE OIL</title><date>2018-03-30</date><risdate>2018</risdate><abstract>The invention relates to a process for preparing a magnetic nanofluid to be used as an insulation fluid and cooling medium in power transformers. According to the invention, the process comprises the synthesis of magnetic nanoparticles FeOby the hydrothermal method, hydrophobic steric stabilization by coating with a polymeric coat, using ultrasonication emulsifying method and dispersion of the coated synthesised nanoparticles into oil, where the suspension has volume concentrations of 0.3...1.5% magnetic nanoparticles, it is subjected to ultrasonication for 4...8 h at the ambient temperature, to result in a magnetic fluid having a saturation magnetization of 1.85...3.08 emu/g, a remanent magnetization of 0.72...0.90 emu/g and a coercive field of 235...268.9 Oe.
Invenţia se referă la un procedeu de obţinere a unui nanofluid magnetic, utilizat ca fluid izolator şi agent de răcire la transformatoare de putere. Procedeul conform invenţiei constă în sinteza de nanoparticule magnetice de FeOprin metoda hidrotermală, stabilizarea sterică hidrofobă, prin acoperire cu un înveliş polimeric, prin metoda emulsionării cu ultrasonare, şi dispersia în ulei a nanoparticulelor sintetizate acoperite, suspensia având concentraţii volumice de 0,3...1,5% nanoparticule magnetice, se ultrasonează timp de 4...8 h la temperatura camerei, rezultând un fluid magnetic având o magnetizaţie la saturaţie de 1,85...3,08 emu/g, magnetizaţie remanentă 0,72...0,90 emu/g şi câmp coercitiv 235...268,9 Oe.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES CHEMISTRY CRACKING HYDROCARBON OILS DYES FUELS LUBRICANTS MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES METALLURGY MINERAL WAXES MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NANOTECHNOLOGY NATURAL RESINS PAINTS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES POLISHES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORTING |
| title | PROCESS FOR PREPARING MAGNETIC NANOFLUID IN VEGETABLE OIL |
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