KR100936013B1 - 자기가변 점성유체 조성물 - Google Patents
자기가변 점성유체 조성물 Download PDFInfo
- Publication number
- KR100936013B1 KR100936013B1 KR1020090071540A KR20090071540A KR100936013B1 KR 100936013 B1 KR100936013 B1 KR 100936013B1 KR 1020090071540 A KR1020090071540 A KR 1020090071540A KR 20090071540 A KR20090071540 A KR 20090071540A KR 100936013 B1 KR100936013 B1 KR 100936013B1
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic particles
- graphite
- viscous fluid
- magnetic
- fluid
- Prior art date
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/001—Electrorheological fluids; smart fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/02—Carbon; Graphite
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/04—Metals; Alloys
-
- 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
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/442—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a metal or alloy, e.g. Fe
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/04—Detergent property or dispersant property
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
- Lubricants (AREA)
Abstract
Description
재료 | 실시예 1 | 실시예 2 | 실시예 3 | 비교예 1 | 비교예 2 | |
분산매 (wt%) | 23.14 | 23.14 | 23.14 | 22.64 | 22.64 | |
표면처리제 (wt%) | 토상흑연 | 0.36 | ||||
하드카본블랙 | 0.36 | |||||
소프트카본블랙 | 0.36 | |||||
계면활성제 (wt%) | 올레인산 | 0.36 | ||||
리롤레익산 | 0.36 | |||||
요변제 (wt%) | 변성폴리아크릴산 | 4.0 | 4.0 | 4.0 | ||
우레탄변성 폴리아크릴계 | 4.0 | 4.0 | ||||
산화방지제 | 아민계 | - | - | - | 0.5 | 0.5 |
자성입자 (wt%) | 카보닐철분 | 72.5 | 72.5 | 72.5 | 72.5 | 72.5 |
침강안정성 (vol %) | 3일간 정치 | 1.5 | 2 | 2 | 7 | 20 |
1개월간 정치 | 5 | 6 | 10 | 18 | 45 | |
점도 (Pas) | 전단속도 1 ( (1/s)3 rpm | 5326 | 5350 | 5315 | 5309 | 5341 |
전단속도 20 (1/s)75 rpm | 516 | 508 | 504 | 511 | 506 |
Claims (5)
- 입경 1 내지 20마이크로미터의 분말상태인 철계 금속 또는 철계 합금인 자성입자의 표면을, 일정 입경의 흑연 또는 카본블랙으로 코팅하고, 상기와 같이 흑연 또는 카본블랙으로 코팅된 자성입자를 요변제와 함께 비극성 분산매인 베이스오일에 분산시킨 현탁액인, 자기가변 점성유체 조성물.
- 삭제
- 제1항에 있어서,상기 자성입자의 표면에 코팅되는 흑연은 입경이 1.5 내지 10마이크로미터인 토상흑연, 인상흑연 또는 인조흑연인 것을 특징으로 하는, 자기가변 점성유체 조성물.
- 제1항에 있어서,상기 자성입자의 표면에 코팅되는 카본블랙은 입경이 10 내지 100 나노미터인 것을 특징으로 하는, 자기가변 점성유체 조성물.
- 제1항에 있어서,상기 자성입자의 표면에 코팅되는 흑연 또는 카본블랙은, 자성입자 100 질량%에 대하여 0.05 내지 10 질량%의 비율인 것을 특징으로 하는, 자기가변 점성유체 조성물.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090071540A KR100936013B1 (ko) | 2009-08-04 | 2009-08-04 | 자기가변 점성유체 조성물 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020090071540A KR100936013B1 (ko) | 2009-08-04 | 2009-08-04 | 자기가변 점성유체 조성물 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR100936013B1 true KR100936013B1 (ko) | 2010-01-11 |
Family
ID=41809591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020090071540A KR100936013B1 (ko) | 2009-08-04 | 2009-08-04 | 자기가변 점성유체 조성물 |
Country Status (1)
Country | Link |
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KR (1) | KR100936013B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11972876B2 (en) * | 2018-08-24 | 2024-04-30 | David Lussey | Composite materials |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000086219A (ja) | 1998-09-11 | 2000-03-28 | Futaba Corp | 単層カーボンナノチューブの皮膜を形成する方法及びその方法により皮膜を形成された単層カーボンナノチューブ |
JP2005035810A (ja) | 2003-07-15 | 2005-02-10 | Mikuni Color Ltd | 0次元又は1次元炭素構造体の分散液 |
JP2007063107A (ja) * | 2005-09-02 | 2007-03-15 | Hokkaido Univ | カーボンナノチューブ分散体の製造方法 |
-
2009
- 2009-08-04 KR KR1020090071540A patent/KR100936013B1/ko active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000086219A (ja) | 1998-09-11 | 2000-03-28 | Futaba Corp | 単層カーボンナノチューブの皮膜を形成する方法及びその方法により皮膜を形成された単層カーボンナノチューブ |
JP2005035810A (ja) | 2003-07-15 | 2005-02-10 | Mikuni Color Ltd | 0次元又は1次元炭素構造体の分散液 |
JP2007063107A (ja) * | 2005-09-02 | 2007-03-15 | Hokkaido Univ | カーボンナノチューブ分散体の製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11972876B2 (en) * | 2018-08-24 | 2024-04-30 | David Lussey | Composite materials |
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