Paper making and fiber liberation – Processes and products – With coating after drying
Patent
1988-11-28
1991-03-26
Cannon, James C.
Paper making and fiber liberation
Processes and products
With coating after drying
1621573, 1621644, 174256, 427412, 428361, 428378, 428391, 428395, 428447, 4284744, 428901, 428902, B32B 2712, D21H 1759, D21H 1932, D21H 1982
Patent
active
050026372
ABSTRACT:
A composite material comprising a para-oriented aramide fiber sheet and a thermosetting resin matrix. The composite material is characterized in that the reinforcing para-oiented aramide fiber sheet is pre-treated with a reactive siloxane oligomer prior to impregnation with the thermosetting resin. The reactive siloxane oligomer is represented by the following general formula (1) of: ##STR1## wherein Z is ##STR2## CH.sub.2 --O--, HS, NH.sub.2 -- or CH.sub.2 .dbd.CH--; m is an integer of from zero to 4; n is an integer of from 1 to 9; and R.sub.1 is the same or different groups selected from methyl, ethyl and phenyl.
The composite material is improved in electric resistance properties, particularly after being dipped in boiling water, and also improved in thermal resistance to soldering.
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Ibaraki Takamasa
Kouguchi Shinichiro
Toyoshima Setuo
Cannon James C.
Honshu Paper Co. Ltd.
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