Alcohol-based organogel as nanofluid medium

Patent metadata

Field	Value
Publication number	US-12161985-B2
Application number	US-202117307515-A
Country	US
Kind code	B2
Filing date	May 4, 2021
Priority date	May 5, 2020
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

An organogel including a base fluid, cetyl alcohol, and a gelling agent provided in an amount to cause the fluid to change from a liquid state to a gelled state at temperatures below at least 25° C. A nanofluid including an organogel and a nanoparticle component which permits the nanofluid to change from a liquid state to a gelled state at temperatures below at least 25° C., the gelled state helping to maintain the nanoparticle component suspended throughout the base fluid; and a method for preparing a gelled nanofluid.

First claim

What is claimed is:

1. An organogel comprising:
a base fluid which is 2-hexyl-1-decanol or 2-n-octyl-1-dodecanol,
cetyl alcohol, and
a gelling agent provided in an amount to cause the fluid to change from a liquid state to a gelled state at temperatures below at least 25° C.,
wherein the concentration of cetyl alcohol is 1% to 15% by weight based on the total weight of the organogel,
the concentration of the gelling agent is 0.1% to 2% by weight based on the total weight of the organogel,
the concentration of the base fluid in the organogel is 83% to 98.9% by weight based on the total weight of the organogel, and
the gelling agent is sodium oleate.

2. The organogel according to claim 1 , wherein a higher concentration of cetyl alcohol allows gelling at a higher temperature.

3. A nanofluid comprising:
the organogel according to claim 1 , and
a nanoparticle component,
wherein the nanofluid is configured to change from a liquid state to a gelled state at temperatures below at least 25° C., the gelled state helping to maintain the nanoparticle component suspended throughout the base fluid.

4. The nanofluid according to claim 3 , wherein the nanoparticle component is selected from the group consisting of molybdenum disulfide, nanodiamond, graphite, tungsten disulfide, hexagonal boron nitride, nanoparticles of materials with lamellar structure, and nanoparticles of soft metals, and combinations thereof.

5. The nanofluid according to claim 3 , wherein the nanoparticle concentration is from 0-15% by weight based on the weight of the nanofluid.

6. A method of preparing a gelling nanofluid, the method comprising the steps of:
preparing an organogel containing a base fluid, cetyl alcohol, and a gelling agent, combining the organogel with a nanoparticle component, to form a gelling nanofluid; and
cooling the gelling nanofluid to a temperature of less than 25° C., which changes from a liquid state to a gelled state at temperatures below 25° C., the gelled state helping to maintain the nanoparticle component suspended throughout the base fluid,
wherein the concentration of cetyl alcohol in the organogel is 1% to 15% by weight based on the total weight of the organogel,
the concentration of the gelling agent in the organogel is 0.1% to 2% by weight based on the total weight of the organogel,
the concentration of the base fluid in the organogel is 83% to 98.9% by weight based on the total weight of the organogel,
the base fluid in the organogel is 2-hexyl-1-decanol or 2-n-octyl-1-dodecanol, and
the gelling agent is sodium oleate.

7. The method according to claim 6 , wherein the nanoparticle component is selected from the group consisting of molybdenum disulfide, nanodiamond, graphite, tungsten disulfide, hexagonal boron nitride, nanoparticles of materials with lamellar structure, and nanoparticles of soft metals, and combinations thereof.

8. The method according to claim 6 , wherein the nanoparticle concentration is from 0-15% by weight based on the weight of the nanofluid.

Assignees

• Univ Howard

Inventors

• Mosleh Mohsen
• Ahmed Mousab
• Chandran Preethi
• Alaghmand Marjan

Classifications

• C10M125/20

  Compounds containing nitrogen · CPC title

• C10N2050/01

  Emulsions, colloids, or micelles · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C10M171/02

  Specified values of viscosity or viscosity index · CPC title

• C10M171/06

  Particles of special shape or size · CPC title