摘要:
Disclosed are an extruded stretched filament of ultra-high-molecular-weight polyethylene having an intrinsic viscosity [η] of at least 3.5 dl/g, a tensile strength at break of 10 kg/mm 2 , a draw ratio of at least 3, a C axis orientation degree of at least 0.9, an outer diameter of 0.1 to 10 mmφ, and a substantially indefinite length, and a method and apparatus for producing the same.
摘要:
A whitened wire (21) of ultra-high-molecular-weight polyethylene having an intrinsic viscosity [η] of at least 4 dl/g, a tensile strength at break of at least 20 kg/mm², and a folding return angle ϑ of 20° or less when folded at 90° and 180°. The whitened wire is produced by melting the ultra-high-molecular-weight polyethylene in a screw extruder; extruding the molten ultra-high-molecular-weight polyethylene from a die having an L/D of at least 10; taking-off the extrudate at a draft ratio of at least 1 while gradually cooling the extruded strand; and stretching the taken-off strand in one or more stages.
摘要:
Disclosed are an extruded stretched filament of ultra-high-molecular-weight polyethylene having an intrinsic viscosity [η] of at least 3.5 dl/g, a tensile strength at break of 10 kg/mm 2 , a draw ratio of at least 3, a C axis orientation degree of at least 0.9, an outer diameter of 0.1 to 10 mmφ, and a substantially indefinite length, and a method and apparatus for producing the same.
摘要:
A whitened wire (21) of ultra-high-molecular-weight polyethylene having an intrinsic viscosity [η] of at least 4 dl/g, a tensile strength at break of at least 20 kg/mm², and a folding return angle ϑ of 20° or less when folded at 90° and 180°. The whitened wire is produced by melting the ultra-high-molecular-weight polyethylene in a screw extruder; extruding the molten ultra-high-molecular-weight polyethylene from a die having an L/D of at least 10; taking-off the extrudate at a draft ratio of at least 1 while gradually cooling the extruded strand; and stretching the taken-off strand in one or more stages.
摘要:
An expandable composition for non-crosslinked foam comprising (A) 80 to 99% by weight of a 1-butene polymer, (B) 20 to 1% by weight of an ethylene polymer, and (C) a blowing agent, the percentages being based on the total weight of the 1-butene polymer and the ethylene polymer.
摘要:
Disclosed are an inflation film of ultra-high-molecular-weight polyethylene having an intrinsic viscosity [η] of at least 5 dl/g, a tensile strength at break of at least 800 kg/cm 2 in a machine direction and at least 700 kg/cm 2 in a transverse direction, an impact strength of at least 5000 kg·cm/cm, a permeability to water vapor of 0.45 g·mm/m 2 ·24 hr or less, a shrinkage factor in a transverse direction at 130°C of 10% or more, and a thickness of 10 to 1000 µm, and a method and apparatus for producing the same.