極寒状態での各種繊維素材の力学物性変化

抄録

Properties of fibers at low temperature has scarcely been reported because of the experimental difficulties. With an interest in the properties of textile fibers under the extremely cold conditions, tensile strength, knot strength, tearing strength and hardness of various yarns and fabrics were measured with instruments placed in the room under the condition of +20°C to -50°C. The phenomenon of cold brittleness of the textile fibers could not be found under the extremely cold condition, the strengths of silk, nylon, vinylon, polyester fibers increased but that of acrylic fiber decreased. Generally, the elongation of fiber decreased while the strength increased. Mechanical troubles of the moving parts of the instruments should be taken into accounts because they could be frozen at low temperature.