Radio frequency heating for rapid curing of nanocomposite adhesives
US-2020317957-A1 · Oct 8, 2020 · US
B-staging of pre-preg using capacitively-coupled electromagnetic heating method
US2020354531A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020354531-A1 |
| Application number | US-202016870739-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 8, 2020 |
| Priority date | May 11, 2019 |
| Publication date | Nov 12, 2020 |
| Grant date | — |
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Abstract
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A method of fabrication processing a pre-preg material includes applying electromagnetic heating to a composition including a fiber and a resin. The electromagnetic heating is conducted with at least one fringing field capacitor utilizing radio frequency (RF) alternating current (AC) and controlling cross-linking of the resin in the composition via the electromagnetic heating.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of fabrication processing a pre-preg material, the method comprising: applying electromagnetic heating to a composition comprising a fiber and a resin, wherein the electromagnetic heating is conducted with at least one fringing field capacitor utilizing radio frequency (RF) alternating current (AC); and controlling cross-linking of the resin in the composition via the electromagnetic heating. 2 . The method of claim 1 , wherein the at least one fringing field capacitor is tuned to improve coupling of the RF to the fiber in the composition. 3 . The method of claim 1 , wherein the at least one fringing field capacitor is tuned to allow for partial curing of the resin. 4 . The method of claim 1 , wherein the at least one fringing field capacitor provides curing of the resin as a function of temperature. 5 . The method of claim 1 , wherein the fiber comprises at least one of a carbon fiber, a nano-filler, a graphite fiber, a glass fiber, and an aramid fiber. 6 . The method of claim 1 , wherein the resin is a thermoset resin with or without embedded fillers. 7 . The method of claim 6 , wherein the thermoset resin is an epoxy resin. 8 . The method of claim 1 , wherein the composition comprises a secondary filler. 9 . The method of claim 8 , wherein the at least one fringing field capacitor is tuned to improve coupling of the RF to the secondary filler in the composition. 10 . The method of claim 1 , wherein the controlling the cross-linking comprises tailoring temperature of the resin by controlling an amount of power input to the at least one fringing field capacitor. 11 . The method of claim 1 , wherein the resin is partially cured by the electromagnetic heating. 12 . The method of claim 1 , wherein the resin comprises carbon nanotubes. 13 . A method of fabrication processing a pre-preg material, the method comprising: applying electromagnetic heating to a composition comprising a carbonaceous solid inclusion and a resin, wherein the electromagnetic heating is conducted with at least one fringing field capacitor utilizing radio frequency (RF) alternating current (AC); and controlling cross-linking of the resin in the composition via the electromagnetic heating. 14 . A method of fabrication processing a pre-preg material, the method comprising: applying electromagnetic heating to a composition comprising a fiber and a resin, wherein the electromagnetic heating induces volumetric heating of the composition; and controlling cross-linking of the resin in the composition via the electromagnetic heating. 15 . The method of claim 14 , wherein the electromagnetic heating is applied via a fringing field capacitor utilizing radio frequency (RF) alternating current (AC). 16 . The method of claim 15 , wherein the at least one fringing field capacitor is tuned to improve coupling of the RF to the fiber in the composition. 17 . The method of claim 14 , wherein the composition comprises polytetrafluoroethylene taping on at least one side of the composition. 18 . The method of claim 14 , wherein an amount of time the composition is exposed to the electromagnetic heating is controlled by a translation speed of a conveyor. 19 . The method of claim 14 , wherein the fiber comprises at least one of a carbon fiber, a nano-filler, a graphite fiber, a glass fiber, and an aramid fiber. 20 . The method of claim 14 , wherein the controlling the cross-linking comprises tailoring temperature of the resin by controlling an amount of power input to the at least one fringing field capacitor.
Assignees
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Classifications
using polymer based synthetic fibres · CPC title
using glass fibres · CPC title
using radio frequency · CPC title
Radiofrequency · CPC title
using carbon fibres · CPC title
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- What does patent US2020354531A1 cover?
- A method of fabrication processing a pre-preg material includes applying electromagnetic heating to a composition including a fiber and a resin. The electromagnetic heating is conducted with at least one fringing field capacitor utilizing radio frequency (RF) alternating current (AC) and controlling cross-linking of the resin in the composition via the electromagnetic heating.
- Who is the assignee on this patent?
- Texas A & M Univ Sys
- What technology area does this patent fall under?
- Primary CPC classification C08J3/247. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Nov 12 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).