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Shear thickening fluid containing carbon nanoparticles and shock absorbing material comprising same
US2016289467A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016289467-A1 |
| Application number | US-201415035237-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 12, 2014 |
| Priority date | Nov 7, 2013 |
| Publication date | Oct 6, 2016 |
| Grant date | — |
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Abstract
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Disclosed are a shear thickening fluid (STF) comprising solid particles and a dispersion medium, wherein the solid particles comprise silica particles as a first component and carbon nanoparticles as a second component and a method for preparing a shear thickening fluid, comprising mixing silica particles, a dispersion medium for silica particles, and a carbon nanoparticle dispersion.
First claim
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1 . A shear thickening fluid (STF) comprising solid particles and a dispersion medium, wherein the solid particles comprise silica particles as a first component and carbon nanoparticles as a second component. 2 . The shear thickening fluid of claim 1 , wherein the carbon nanoparticles are graphene oxide nanoparticles. 3 . The shear thickening fluid of claim 1 , wherein the carbon nanoparticles are graphene or graphite oxide nanoparticles. 4 . The shear thickening fluid of claim 1 , wherein the silica particles are fumed silica particles. 5 . The shear thickening fluid of claim 4 , wherein the fumed silica particles have a bimodal particle size distribution. 6 . The shear thickening fluid of claim 1 , wherein the dispersion medium is selected from the group consisting of polyethylene glycol, ethylene glycol, and polypropylene glycol. 7 . A method for preparing a shear thickening fluid, comprising mixing silica particles, a dispersion medium for silica particles, and a carbon nanoparticle dispersion. 8 . The method of claim 7 , comprising: stirring the carbon nanoparticle dispersion and a dispersion medium; drying the stirred material under reduced pressure to remove water and other solvent, thereby preparing the dispersion medium for silica particles; and adding silica particles to the prepared dispersion medium for silica particles, followed by mixing. 9 . The method of claim 7 , wherein the carbon nanoparticle dispersion is used in an amount of 5-20 wt % based on the total weight of the shear thickening fluid. 10 . The method of claim 7 , wherein the carbon nanoparticle dispersion is used in an amount of 10-15 wt % based on the total weight of the shear thickening fluid. 11 . The method of claim 7 , wherein the concentration of the carbon nanoparticle dispersion is 0.01-2%. 12 . The method of claim 7 , wherein the concentration of the carbon nanoparticle dispersion is 0.03-1%. 13 . The method of claim 7 , wherein the silica particles are used in an amount of 5-20 wt % based on the total weight of the shear thickening fluid, and the carbon nanoparticles are used in an amount of 10-15 wt % based on the total weight of the shear thickening fluid. 14 . The method of claim 7 , wherein the silica particles are fumed silica particles, and the carbon nanoparticles are graphene oxide nanoparticles. 15 . A shock-absorbing material containing the shear thickening fluid of claim 1 .
Assignees
Inventors
Classifications
Graphene or derivatives, e.g. graphene oxides · CPC title
Silica · CPC title
Reactive armour; Dynamic armour · CPC title
Ethers (D06M13/11 takes precedence) · CPC title
- C09D7/44Primary
Combinations of two or more thickening agents · CPC title
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- What does patent US2016289467A1 cover?
- Disclosed are a shear thickening fluid (STF) comprising solid particles and a dispersion medium, wherein the solid particles comprise silica particles as a first component and carbon nanoparticles as a second component and a method for preparing a shear thickening fluid, comprising mixing silica particles, a dispersion medium for silica particles, and a carbon nanoparticle dispersion.
- Who is the assignee on this patent?
- Korea Ind Tech Inst
- What technology area does this patent fall under?
- Primary CPC classification C09D7/44. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Oct 06 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).