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BRPI0704907A2 - Suitable method for drying magnetic fluids - Google Patents

Suitable method for drying magnetic fluids

Info

Publication number
BRPI0704907A2
BRPI0704907A2 BRPI0704907-2A BRPI0704907A BRPI0704907A2 BR PI0704907 A2 BRPI0704907 A2 BR PI0704907A2 BR PI0704907 A BRPI0704907 A BR PI0704907A BR PI0704907 A2 BRPI0704907 A2 BR PI0704907A2
Authority
BR
Brazil
Prior art keywords
drying
magnetic
magnetic fluids
morphology
well
Prior art date
Application number
BRPI0704907-2A
Other languages
Portuguese (pt)
Inventor
Contreras Lionel Fernel Gamarra
Souza Brito Giancarlo Espasito De
Villanueva Doris Maribel Escriba
Edson Amaro Jr
Jose Mario Prison
Original Assignee
Contreras Lionel Fernel Gamarra
Souza Brito Giancarlo Espasito De
Villanueva Doris Maribel Escriba
Edson Amaro Jr
Jose Mario Prison
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contreras Lionel Fernel Gamarra, Souza Brito Giancarlo Espasito De, Villanueva Doris Maribel Escriba, Edson Amaro Jr, Jose Mario Prison filed Critical Contreras Lionel Fernel Gamarra
Priority to BRPI0704907-2A priority Critical patent/BRPI0704907A2/en
Publication of BRPI0704907A2 publication Critical patent/BRPI0704907A2/en

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  • Soft Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)

Abstract

MÉTODO ADEQUADO PARA SECAGEM DE FLUIDOS MAGNÉTICOS. Esta patente descreve um método para a secagem de fluidos magnéticos à base de nanopartículas superparamagnéticas, adequado para a caracterização morfológica magnética e estrutural, onde não ocorrem alterações na estrutural original da suspensão coloidal, assim como na morfologia das partículas, caso contrario afetariam as propriedades fisico- químicas das mesmas. O método de liofihização evita que as nanopartículas cresçam durante a secagem formando aglomerados e não representem assim a fase e a morfologia real do fluido magnético. A liofilização permite que não ocorram estes fenômenos de crescimento das nanopartículas, assim como evita a mudança de fase, garantindo assim um estudo do material para futuras aplicações de maneira verdadeira.APPROPRIATE METHOD FOR DRYING MAGNETIC FLUIDS. This patent describes a method for drying superparamagnetic nanoparticle-based magnetic fluids suitable for magnetic and structural morphological characterization, where no changes occur in the original structural of the colloidal suspension, as well as in the morphology of the particles, otherwise they would affect the physical properties. - chemicals thereof. The lyophilization method prevents nanoparticles from growing during drying to form clumps and thus does not represent the actual phase and morphology of the magnetic fluid. Freeze drying allows these phenomena of nanoparticle growth not to occur, as well as avoiding phase change, thus ensuring a true study of the material for future applications.

BRPI0704907-2A 2007-05-11 2007-05-11 Suitable method for drying magnetic fluids BRPI0704907A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BRPI0704907-2A BRPI0704907A2 (en) 2007-05-11 2007-05-11 Suitable method for drying magnetic fluids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BRPI0704907-2A BRPI0704907A2 (en) 2007-05-11 2007-05-11 Suitable method for drying magnetic fluids

Publications (1)

Publication Number Publication Date
BRPI0704907A2 true BRPI0704907A2 (en) 2009-01-06

Family

ID=40560031

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0704907-2A BRPI0704907A2 (en) 2007-05-11 2007-05-11 Suitable method for drying magnetic fluids

Country Status (1)

Country Link
BR (1) BRPI0704907A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103842755A (en) * 2011-08-30 2014-06-04 Vsb-奥斯特拉瓦技术大学，纳米技术中心 A method of the preparation of fibrillar and lamellar porous microstructures and nanostructures by means of controlled vacuum freeze-drying of liquid nanoparticles dispersions
CN115638615A (en) * 2022-11-08 2023-01-24 东阳市家具研究院 Drying equipment for high-vacuum drying processing of wood and drying method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103842755A (en) * 2011-08-30 2014-06-04 Vsb-奥斯特拉瓦技术大学，纳米技术中心 A method of the preparation of fibrillar and lamellar porous microstructures and nanostructures by means of controlled vacuum freeze-drying of liquid nanoparticles dispersions
CN103842755B (en) * 2011-08-30 2016-03-16 Vsb-奥斯特拉瓦技术大学，纳米技术中心 The method of threadiness and layered porous micro-structural and nanostructured is prepared by the steered vacuum freeze drying of liquid nanometer particle dispersion
CN115638615A (en) * 2022-11-08 2023-01-24 东阳市家具研究院 Drying equipment for high-vacuum drying processing of wood and drying method thereof

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Legal Events

Date Code Title Description
B03A Publication of an application: publication of a patent application or of a certificate of addition of invention
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired