High shear thin film machine for dispersion and simultaneous orientation-distribution of nanoparticles within polymer matrix

Patent metadata

Field	Value
Publication number	US-11173459-B2
Application number	US-202016805319-A
Country	US
Kind code	B2
Filing date	Feb 28, 2020
Priority date	Mar 24, 2015
Publication date	Nov 16, 2021
Grant date	Nov 16, 2021

Abstract

An improved a device and method for dispersion and simultaneous orientation of nanoparticles within a matrix is provided. A mixer having a shaft and a stator is provided. The shaft may have a rupture region and erosion region. Further, an orienter having an angled stationary plate and a moving plate are provided. The nanoparticles and the matrix are fed into the mixer. A rotational force is applied to the shaft to produce shearing forces. The shearing forces disperse and exfoliate the nanoparticles within the matrix. The dispersed mixture is outputted onto the moving plate. The moving plate is forced across the angled stationary plate to produce fully developed laminar shear flow. The fully developed laminar shear flow or the two-dimensional extensional drag flow orients the dispersed nanoparticles-matrix mixture.

First claim

What is claimed is:

1. A device to disperse particles within a matrix, the device comprising:
a housing having a center axis, an outer surface, an inner diameter, and an inner surface;
an inlet in fluid connection with the housing configured to receive a mixture of the particles and the matrix;
a shaft within the housing, the shaft having a length defined between the inlet and an outlet of the housing, a substantially constant outer circumference and a center of rotation about the center axis;
a rupture portion of the shaft having surface interruptions extending inwardly from the outer circumference;
an erosion portion of the shaft between the rupture portion of the shaft and the outlet, the erosion portion of the shaft having a smooth outer surface along the substantially constant outer circumference, wherein the erosion portion of the shaft is greater than the rupture portion of the shaft; and
a dispersion of the mixture between the inner diameter of the housing and along substantially an entirety of the length of the shaft between the inlet and the outlet.

2. The device of claim 1 , further comprising:
one or more cooling channels disposed within the housing between the outer surface and the inner surface.

3. The device of claim 2 , wherein the one or more cooling channels is threaded.

4. The device of claim 1 , further comprising:
an elongated member removably installed into each of the one or more cooling channels.

5. The device of claim 1 , further comprising:
a screw groove portion of the shaft proximate to the inlet and having helical channels to force the particles and the matrix towards the rupture portion.

6. The device of claim 1 , wherein the interior surface of the one or more cooling channels comprise surface irregularities to increase surface area of the interior surface to improve heat dissipation.

7. The device of claim 6 , wherein the surface irregularities comprise surface undulations.

8. A device to disperse particles within a matrix, the device comprising:
a housing having a central axis, an outer surface, an inner diameter, and an inner surface;
an inlet connected in fluid communication with the housing configured to receive a mixture of the particles and the matrix;
an outlet connected in fluid communication with the housing and the inlet;
a shaft disposed within the housing between the inlet and the outlet, the shaft having a center of rotation about the central axis and an outer circumference;
a rupture portion of the shaft having surface interruptions extending inwardly toward the center of rotation from the outer circumference, wherein the rupture portion of the shaft is disposed proximate the inlet; and
an erosion portion of the shaft between the rupture portion of the shaft and the outlet, the erosion portion of the shaft having a smooth outer surface.

9. The device of claim 8 , wherein the shaft comprises a substantially constant outer circumference.

10. The device of claim 9 , wherein the erosion portion comprises a smooth outer surface along the substantially constant outer circumference.

11. The device of claim 9 , wherein the one or more cooling channels is threaded.

12. The device of claim 11 , further comprising:
an elongated member removably installed into each of the one or more cooling channels.

13. The device of claim 11 , wherein the interior surface of the one or more cooling channels comprise one or more surface irregularities to increase surface area of the interior surface to improve heat dissipation.

14. The device of claim 13 , wherein the one or more surface irregularities comprise surface undulations.

15. The device of claim 8 , wherein a dispersion of the mixture between the inner diameter of the housing and along substantially an entirety of a length of the shaft between the inlet and the outlet.

16. The device of claim 8 , further comprising:
one or more cooling channels disposed within the housing between the outer surface and the inner surface.

17. The device of claim 8 , further comprising:
a screw groove portion of the shaft proximate to the inlet and having helical channels to force the particles and the matrix towards the rupture portion.

18. A device to disperse particles within a matrix, the device comprising:
a housing having a center axis, an outer surface an inner diameter, and an inner surface;
an inlet in fluid connection with the housing configured to receive a mixture of the particles and the matrix;
a shaft within the housing, the shaft having a length defined between the inlet and an outlet of the housing, one end of the length disposed at the inlet and an opposing end of the length disposed at the outlet, a substantially constant outer circumference and a center of rotation about the center axis;
a rupture portion of the shaft having surface interruptions extending inwardly from the outer circumference, wherein the rupture portion of the shaft is disposed at the inlet of the housing;
an erosion portion of the shaft extending along the length of the shaft between the rupture portion of the shaft and the opposing end at the outlet, the erosion portion of the shaft occupying and in communication with the outlet and having a smooth outer surface along the substantially constant outer circumference;
one or more cooling channels disposed within the housing between the outer surface and the inner surface;
an elongated member removably installed into each of the one or more cooling channels;
one or more surface irregularities in the interior surface of the one or more cooling channels to increase surface area of the interior surface to improve heat dissipation; and
a dispersion of the mixture between the inner diameter of the housing and along substantially an entirety of the length of the shaft between the inlet and the outlet.

19. The device of claim 18 , wherein the one or more cooling channels is threaded.

20. The device of claim 18 , further comprising:
a screw groove portion of the shaft proximate to the inlet and having helical channels to force the particles and the matrix towards the rupture portion.

Assignees

• South Dakota Board Of Regents

Inventors

• Dash Ilchgerel
• Winter Robb M

Classifications

• B01F2101/2805

  Mixing plastics, polymer material ingredients, monomers or oligomers · CPC title

• B01F35/92

  for heating the outside of the receptacle, e.g. heated jackets or burners · CPC title

• B01F27/2722 Primary

  provided with ribs, ridges or grooves on one surface · CPC title

• B01F23/57

  Mixing high-viscosity liquids with solids · CPC title

• B01F2035/98

  Cooling · CPC title