Method for imparting improved surface properties to a polymeric

Details Method for imparting improved surface properties to a polymeric Method for imparting improved surface properties to a polymeric

1983-09-19

1985-03-12

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156629, 156643, 156646, 156668, 427 40, B29C 1902, B29C 1708

Patent

active

045043493

ABSTRACT:
The invention provides a novel method for improving the surface properties or, in particular, the susceptibility to adhesive bonding of a shaped article of a synthetic polymer having aromatic rings and nitrogen atoms in the backbone chain of the polymer molecule, such as polyimides, polyamidoimides and polyaramides, so that the mechanical strengths of a resinous composite material reinforced with such a shaped article, e.g. fibers and cloths, may be greatly improved. The method comprises subjecting the surface of the shaped article to exposure to low temperature plasma of an inorganic, in particular, oxidizing gas generated by the glow discharge between electrodes under a reduced pressure, the discharge voltage between the electrodes being at least 4000 volts.

REFERENCES:
patent: 4382101 (1983-05-01), Polak
patent: 4400424 (1983-08-01), Hatada et al.

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