DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Multifunctional curing agents and their use in improving strength of composites containing carbon fibers embedded in a polymeric matrix

Abstract

A functionalized carbon fiber having covalently bound on its surface a sizing agent containing epoxy groups, at least some of which are engaged in covalent bonds with crosslinking molecules, wherein each of said crosslinking molecules possesses at least two epoxy-reactive groups and at least one free functional group reactive with functional groups of a polymer matrix in which the carbon fiber is to be incorporated, wherein at least a portion of said crosslinking molecules are engaged, via at least two of their epoxy-reactive groups, in crosslinking bonds between at least two epoxy groups of the sizing agent. Composites comprised of these functionalized carbon fibers embedded in a polymeric matrix are also described. Methods for producing the functionalized carbon fibers and composites thereof are also described.

Inventors:
;
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1351078
Patent Number(s):
9617398
Application Number:
14/107,416
Assignee:
UT-BATTELLE, LLC
Patent Classifications (CPCs):
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
D - TEXTILES D06 - TREATMENT OF TEXTILES OR THE LIKE D06M - TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Dec 16
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Citation Formats

Vautard, Frederic, and Ozcan, Soydan. Multifunctional curing agents and their use in improving strength of composites containing carbon fibers embedded in a polymeric matrix. United States: N. p., 2017. Web.
Vautard, Frederic, & Ozcan, Soydan. Multifunctional curing agents and their use in improving strength of composites containing carbon fibers embedded in a polymeric matrix. United States.
Vautard, Frederic, and Ozcan, Soydan. Tue . "Multifunctional curing agents and their use in improving strength of composites containing carbon fibers embedded in a polymeric matrix". United States. https://www.osti.gov/servlets/purl/1351078.
@article{osti_1351078,
title = {Multifunctional curing agents and their use in improving strength of composites containing carbon fibers embedded in a polymeric matrix},
author = {Vautard, Frederic and Ozcan, Soydan},
abstractNote = {A functionalized carbon fiber having covalently bound on its surface a sizing agent containing epoxy groups, at least some of which are engaged in covalent bonds with crosslinking molecules, wherein each of said crosslinking molecules possesses at least two epoxy-reactive groups and at least one free functional group reactive with functional groups of a polymer matrix in which the carbon fiber is to be incorporated, wherein at least a portion of said crosslinking molecules are engaged, via at least two of their epoxy-reactive groups, in crosslinking bonds between at least two epoxy groups of the sizing agent. Composites comprised of these functionalized carbon fibers embedded in a polymeric matrix are also described. Methods for producing the functionalized carbon fibers and composites thereof are also described.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {4}
}

Works referenced in this record:

Alkenyl Isocyanate-Substituted Carbamates
patent, November 1960


Triphenylmethane Tetraisocyanate Derivatives
patent, December 1972


Adhesives Containing Diphenylmethane Tetraisocyanate Derivatives
patent, October 1973


Preparation of alkenyl isocyanates
patent, August 1975


Tetraisocyanate compositions
patent, September 1975


Reaction products of alkyl and alkenyl succinic acids and ether diamines
patent, April 1982


Mixtures of alkyl and alkenyl succinic acids and polymer acids
patent, April 1985


Alkylated triamines and higher polyamines as curing agents in polyurethane manufacture
patent, November 1987


Sizing agent for carbon fibers
patent, November 1988


At least trifunctional epoxy resin reacted with solid rubber mixed with epoxy resin and curing agent
patent, January 2000


Prepreg fabric and honeycomb sandwich panel
patent, August 2002


Curable resin composition
patent, September 2009


Method for enhancing adherence of carbon fibers with respect to an organic matrix
patent, December 2012


Process for Improving the Adhesion of Carbon Fibers with Regard to an Organic Matrix
patent-application, April 2010


Method of Improving Adhesion of Carbon Fibers with a Polymeric Matrix
patent-application, August 2013


Fatigue performance of carbon fibre/vinyl ester composites: the effect of two dissimilar polymeric sizing agents
journal, July 1998


Mechanical and Thermal Properties of Chemically Modified Epoxy Resin
journal, January 2012


Plasma etching and plasma polymerization coating of carbon fibers. Part 1. Interfacial adhesion study
journal, January 2002


Effect of solubility and miscibility on the adhesion behavior of polymer-coated carbon fibers with vinyl ester resins
journal, January 2000


Enhanced interfacial adhesion of carbon fibers to vinyl ester resin using poly(arylene ether phosphine oxide) coatings as adhesion promoters
journal, January 2000


Theoretical study on reaction mechanism of isocyanate radical NCO with ethene
journal, March 2009


Designed Interphase Regions in Carbon Fiber Reinforced Vinyl Ester Matrix Composites
journal, December 1999


Plasma-graft polymerization of a monomer with double bonds onto the surface of carbon fiber and its adhesion to a vinyl ester resin
journal, September 2003