Acrylic synthetic fiber improved in styleability
View Patent ↗An object of the present invention is to provide an acrylic synthetic fiber having excellent stylability and heat resistance. The object may be attained by an acrylic synthetic fiber having a knot-like unevenness on a fiber surface thereof, a difference of distances between a depression and a projection of 5.0 micrometers to 15.0 micrometers, a distance between peaks of unevenness of 0.05 mm to 0.5 mm, a flexural rigidity value of the fiber of 7.0×10 −7 N-m 2 /m to 10.0×10 −7 N-m 2 /m, and a torsional rigidity value of the fiber of 5.0×10 −9 N-m 2 to 10.0×10 −9 N-m 2 , and furthermore the object may be attained by an acrylic synthetic fiber comprising an acrylic copolymer having a content of acrylonitrile of not less than 60 mol %, a sulfur content originating in a vinyl based monomer including a sulfonic group of 0.15% by weight to 0.50% by weight, and a specific viscosity of 0.20 to 0.50.
1. An acrylic synthetic fiber having a knot-like unevenness on a fiber surface thereof, a difference of distances between a depression and a projection of 5.0 micrometers to 15.0 micrometers, a distance between peaks of unevenness of 0.05 mm to 0.5 mm, a flexural rigidity value of the fiber of 7.0×10 −7 N-m 2 /m to 10.0×10 −7 N-m 2 /m, and a torsional rigidity value of the fiber of 5.0×10 −9 N-m 2 to 10.0×10 −9 N-m 2 .
2. The acrylic synthetic fiber according to claim 1 comprising an acrylic copolymer having a content of acrylonitrile of not less than 60 mol %, a sulfur content originating in a vinyl based monomer including a sulfonic group of 0.15% by weight to 0.50% by weight, and a specific viscosity of 0.20 to 0.50.
3. The acrylic synthetic fiber according to claim 1 , wherein a 10% shrinkage starting temperature of the acrylic synthetic fiber is not less than 150 degrees C.
4. An artificial hair comprising the acrylic synthetic fiber according to claim 1 .
5. The acrylic synthetic fiber according to claim 2 , wherein a 10% shrinkage starting temperature of the acrylic synthetic fiber is not less than 150 degrees C.
6. An artificial hair comprising the acrylic synthetic fiber according to claim 2 .
7. An artificial hair comprising the acrylic synthetic fiber according to claim 3 .