Electrolysis: processes – compositions used therein – and methods – Product produced by electrolysis involving electrolytic...
Patent
1995-03-01
1996-08-27
Niebling, John
Electrolysis: processes, compositions used therein, and methods
Product produced by electrolysis involving electrolytic...
205414, 205422, C25B 300
Patent
active
055498078
ABSTRACT:
In accordance with the present invention, electropolymerization in a substantially aqueous solution is used to form thick (e.g. greater than 2 microns or 30 weight %) and thermally stable coatings of thermoplastic materials onto electrically conductive filler materials (e.g. rods, plates, fibers). In a first preferred embodiment, the thick thermoplastic matrix comprises a copolymer of 3-carboxyphenyl meleimde and styrene. In a second preferred embodiment, cyclic (and preferably aromatic) N-substituted methacrylamide monomers are electropolymerized onto electrically conductive (e.g., graphite) filler (e.g., fibers, plates, film or cloth) to form a novel polymer composite exhibiting high Tg as well as a controlled degree of cross-linking which can prevent flow at high temperature. This invention is particularly will suited for direct preparation of thermoplastic prepregs containing commercially available bundles of graphite fibers. These prepregs are then molded under heat and pressure so as to form a thermoplastic matrix composite with good fiber distribution, uniformity and high temperature resistance.
REFERENCES:
patent: 4952654 (1990-08-01), Burschl et al.
R. V. Subramanian, J. J. Jakubowski; "Electropolymerization on Graphite Fibers"; Raymond Engineering and Science, May, 1978, vol. 18, No. 7; pp. 590-600.
Ergozhin et al, "Water-Soluble Polyelectrolytes based on Methacryloylaminobenzoic Acids", Makromol. Chem., Rapid Commun., 8, pp. 171-177 (1987).
Bell James P.
Iroh Jude O.
Liang Jengli
Scola Daniel A.
Mayrkar Kishor
Niebling John
The University Of Connecticut
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