Multifunctional curing agents and their use in improving strength of composites containing carbon fibers embedded in polymeric matrix
申请人:UT-Battelle, LLC
公开号:US10240011B2
公开(公告)日:2019-03-26
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 cros slinking 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.
MULTIFUNCTIONAL CURING AGENTS AND THEIR USE IN IMPROVING STRENGTH OF COMPOSITES CONTAINING CARBON FIBERS EMBEDDED IN A POLYMERIC MATRIX
申请人:UT-BATTELLE, LLC
公开号:US20160102180A1
公开(公告)日:2016-04-14
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.
MULTIFUNCTIONAL CURING AGENTS AND THEIR USE IN IMPROVING STRENGTH OF COMPOSITES CONTAINING CARBON FIBERS EMBEDDED IN POLYMERIC MATRIX
申请人:UT-Battelle, LLC
公开号:US20170166712A1
公开(公告)日:2017-06-15
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 cros slinking 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.
US9617398B2
申请人:——
公开号:US9617398B2
公开(公告)日:2017-04-11
Bridged (β-alkoxyalkyl)CoIII(salen) complexes by intramolecular alkoxycobaltation of unactivated alkenes: new models for coenzyme B12
作者:Rolf Blaauw、Irene E. Kingma、Jan H. Laan、Juul L. van der Baan、Sijbe Balt、Martinus W. G. de Bolster、Gerhard W. Klumpp、Wilberth J. J. Smeets、Anthony L. Spek
DOI:10.1039/b000196l
日期:——
but-2-en-1-yl (6c), but-3-en-1-yl (6d)] react with oxygen and alcohols to give organocobalt(III) complexes containing a β-alkoxy-substituted three- or four-carbon bridge between cobalt and the equatorial ligand. NMR and UV–VIS spectroscopic studies show that product formation is a three-stage process involving (1) oxidation of cobalt(II) to produce an (alkoxo)cobalt(III) complex, (2) intramolecular interaction