Gelling Nanofluids For Dispersion Stability

Patent metadata

Field	Value
Publication number	US-2016017253-A1
Application number	US-201414774619-A
Country	US
Kind code	A1
Filing date	Mar 14, 2014
Priority date	Mar 14, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

A gelling nanofluid and methods for manufacture are provided. The composition and methods for manufacture produce nanofluid gels so that the settlement of nanoparticles in a base fluid is improved due to the inhibition of particle movement in the gel. The nanofluid gel is produced by using a gelling agent which is either coated on the nanoparticles prior to dispersion in the base fluid or directly introduced in the base fluid.

First claim

1 . A nanofluid comprising:
a base fluid; a nanoparticle component; and a gelling agent provided in an amount effective to cause the nanofluid to change from a liquid state to a gelled state at temperatures below at least about 10° C., the gelled state helping to maintain the nanoparticle component suspended throughout the base fluid.

2 . The nanofluid of claim 1 wherein the nanoparticle component is selected from the group consisting of diamond nanoparticles, MoS 2 nanoparticles, WS 2 , and combinations thereof.

3 . The nanofluid of claim 1 wherein the base fluid is a polar fluid.

4 . The nanofluid of claim 3 wherein the base fluid is selected from the group consisting of water, long chain alcohol-base machining lubricant, oil-in-water emulsions, and mixtures thereof.

5 . The nanofluid of claim 4 wherein the base fluid is a long chain alcohol-based machining lubricant.

6 . The nanofluid of claim 1 wherein the gelling agent is provided in a range of about 0.2 to about 2.0 wt. %.

7 . The nanofluid of claim 1 wherein the gelling agent is selected from the group consisting of sodium oleate, alginic acid, sodium linoleate, and mixtures thereof.

8 . The nanofluid of claim 7 wherein the gelling agent is sodium oleate.

9 . The nanofluid of claim 1 wherein the gelling agent is provided in an amount effective to cause the nanofluid to change from a liquid state to a gelled state at temperatures below at least about 20° C.

10 . A method of preparing a gelling nanofluid, the method comprising the steps of:
coating a first nanoparticle component with a gelling agent to form coated nanoparticles; and combining the coated nanoparticles with a base fluid to form the gelling nanofluid, the gelling agent provided in an amount effective to cause the nanofluid to change from a liquid state to a gelled state at temperatures below at least about 10° C., the gelled state helping to maintain the nanoparticle component suspended throughout the base fluid.

11 . The method of claim 10 wherein the base fluid is a polar fluid.

12 . The method of claim 11 wherein the base fluid is selected from the group consisting of water, long chain alcohol-base machining lubricant, oil-in-water emulsions, and mixtures thereof.

13 . The method of claim 10 wherein the gelling agent is provided in a range of about 0.2 to about 2.0 wt. %.

14 . The method of claim 10 wherein the gelling agent is selected from the group consisting of sodium oleate, alginic acid, sodium linoleate, and mixtures thereof.

15 . The method of claim 14 wherein the gelling agent is sodium oleate.

16 . The method of claim 10 wherein the gelling agent is provided in an amount effective to cause the nanofluid to change from a liquid state to a gelled state at temperatures below at least about 20° C.

17 . A method of preparing a gelling nanofluid, the method comprising the steps of:
combining a base fluid with a first nanoparticle component and a gelling agent to form a gelling nanofluid; and cooling the gelling nanofluid to a temperature of less than about 20° C., the gelling agent provided in an amount effective to cause the nanofluid to change from a liquid state to a gelled state at temperatures below at least about 10° C., the gelled state helping to maintain the nanoparticle component suspended throughout the base fluid.

18 . The method of claim 17 wherein the base fluid is a polar fluid.

19 . The method of claim 18 wherein the base fluid is selected from the group consisting of water, long chain alcohol-base machining lubricant, oil-in-water emulsions, and mixtures thereof.

20 . The method of claim 17 wherein the gelling agent is provided in a range of about 0.2 to about 2.0 wt. %.

21 . The method of claim 17 wherein the gelling agent is selected from the group consisting of sodium oleate, alginic acid, sodium linoleate, and mixtures thereof.

22 . The method of claim 17 wherein the gelling agent is provided in an amount effective to cause the nanofluid to change from a liquid state to a gelled state at temperatures below at least about 20° C.

23 . The nanofluid of claim 1 wherein the base fluid is a non-aqueous fluid having a moisture content less than about 20%.

Assignees

• Univ Howard

Inventors

• Mosleh Mohsen
• Ghaderi-Yeganeh Mohammad

Classifications

• C10M2207/0215

  used as base material · CPC title

• C09C1/44 Primary

  Carbon · CPC title

• C09C3/08

  Treatment with low-molecular-weight {non-polymer} organic compounds {(C09C3/006, C09C3/048 take precedence)} · CPC title

• C10M141/12

  at least one of them being an organic compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10 · CPC title

• C10M173/00

  Lubricating compositions containing more than 10% water · CPC title