-
公开(公告)号：US20230416949A1
公开(公告)日：2023-12-28
申请号：US18249492
申请日：2021-11-10
Inventor： Stuart E. Smith , William M. Ferry , Kazem V. Edmond , Manesh Gopinadhan , Nicolas J. Alvarez , Heedong Yoon , Clarence E. Chase , Daniel J. Ryan
CPC classification number: D01F9/145 , D10B2101/12 , D01F9/322
Abstract: Pitch compositions suitable for spinning may comprise: a pitch having a softening point (SP) below 400° C. and is capable of achieving a radial Hencky strain prior to break of about 0.7 to about 10, at spinning temperature (Ts) ranging from about SP−30° C. to about SP+80° C. Methods for producing a carbon fiber from a pitch composition at a temperature within a spinning temperature (Ts) range may comprise determining a temperature range wherein the maximum radial Hencky strain (εR) lies above a minimum process radial Hencky strain, and wherein the minimum process radial Hencky strain is within a range of about 0.7 to about 10. The spinning temperature (Ts) range may be determined by measuring a maximum radial Hencky strain (εR) prior to break at a series of different temperatures and strain rates. Carbon fiber composites may comprise of the said carbon fiber.
-
公开(公告)号：US20250023045A1
公开(公告)日：2025-01-16
申请号：US18349227
申请日：2023-07-10
Applicant: ExxonMobil Technology and Engineering Company , The Trustees of the University Of Pennsylvania
Inventor： Manesh Gopinadhan , Stuart E. Smith , Eric B. Sirota , Bharath Natarajan , Chinedum O. Osuji , Yuma Morimitsu , Kazem V. Edmond
IPC: H01M4/583 , H01M4/62 , H01M10/0525
Abstract: Disclosed embodiments may include a material having a composition including a mesophase pitch material between approximately 5.0% to 95.0% and having a viscosity of between approximately 0.01 to 102 Pascal seconds (Pa·s) in a temperature range of between approximately Ts
-
3.发明公开公开(公告)号：US20240068132A1
公开(公告)日：2024-02-29
申请号：US18269882
申请日：2021-11-10
Inventor： Manesh Gopinadhan , Stuart E. Smith , Nicole M. Callen , Clarence E. Chase , Kazem V. Edmond , Srinivasan Rajagopalan , Eric B. Sirota , Daniel J. Ryan
Abstract: Nucleation enhancement and/or growth rate improvement of mesophase in pitch compositions derived from hydrocarbon feedstocks can be achieved by: reacting in a reaction zone a blend comprising an isotropic feed and a seeding agent, to produce a reacted pitch having a mesophase content of about 10 vol % to 100 vol %, based on the total volume of the reacted pitch, and a softening point (Tsp) below 400° C.; wherein the seeding agent is about 50 wt % or less, based on the total weight of the blend; wherein the seeding agent has a mesophase content of about 0.01 vol % to 100 vol %, based on the total volume of the seeding agent.
-
公开(公告)号：US20240035972A1
公开(公告)日：2024-02-01
申请号：US17816526
申请日：2022-08-01
Inventor： Kazem V. Edmond , David L. Perkins , Daniella Mendez
CPC classification number: G01N21/6428 , G01N33/2823
Abstract: Identification of aromatic interactions, e.g. π-interactions, of mesophase formation, and methods related thereto, including the use of fluorescent light and optical imaging and/or detection schemes for the identification of π-interactions of mesophase formation, and methods related thereto. Methods include interacting fluorescent light with a pitch composition; receiving fluorescent light emissions from the pitch composition; and detecting the onset of mesophase formation upon detecting a normalized fluorescence intensity (I/I0) of the fluorescent light emissions in the range of about 0.4 to about 0.7 at a wavelength in the range of about 430 nm to about 470 nm for an exposure of about 1.5 seconds.
-
-
-
Search Results
4
records
(took 0.015 seconds)
