D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
D01D 5/26 (2006.01) D01D 5/11 (2006.01) D01D 5/42 (2006.01) D01D 10/02 (2006.01) D01F 6/18 (2006.01)
Patent
CA 2064116
A new, pulp-like, acrylic short fiber having excellent heat- and chemical-resistance is provided. The fiber has a thickness distribution of 0.1 µm to 50 µm, a length distribution of 1 mm to 20 mm, and a thermal transition temperature (Tg) of above 200°C. The fiber is produced by heating a mixture of polyacrylonitrile and water of about 5 % to 100% by weight to temperatures above hydration-melting temperature under seal to an amorphous melt; cooling the resulting amorphous melt to temperatures between the melting and the solidifying temperatures of the melt to form a supercooled melt; extruding the resulting supercooled melt to give extrudates; heat-stabilizing the resulting extrudates at temperatures between 180°C and 300°C for 1 minute to 4 hours after drying and drawing; and cutting and beating the resulting heat-stabilized extrudates into an appropriate size.
Cho Jae Whan
Kim Byung Chul
Lee Chul Joo
Min Byung Ghyl
Son Tae Won
Korea Institute Of Science And Technology.
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