The present disclosure pertains to: polyamide fibers for an airbag which are characterized in that the fiber size thereof is 200-800 dtex, inclusive, and the stress retention rate thereof when obtained using a prescribed procedure is at least 3.0%; and a method for producing said polyamide fibers for an airbag, the method being characterized in that during the thermosetting step and the relaxing step thereof, the contact time between thread and a roller which is at least 190° C. is at least 30 msec and less than 110 msec, the temperature of the thermosetting roller is 190-205° C., inclusive, the temperature of the relaxing roller is greater than 100° C. and less than 190° C., and the speed ratio of the relaxing roller to the thermosetting roller satisfies this equation: 1.00<relaxing roller speed/thermosetting roller speed<1.10.

The present disclosure pertains to: polyamide fibers for an airbag which are characterized in that the fiber size thereof is 200-800 dtex, inclusive, and the stress retention rate thereof when obtained using a prescribed procedure is at least 3.0%; and a method for producing said polyamide fibers for an airbag, the method being characterized in that during the thermosetting step and the relaxing step thereof, the contact time between thread and a roller which is at least 190° C. is at least 30 msec and less than 110 msec, the temperature of the thermosetting roller is 190-205° C., inclusive, the temperature of the relaxing roller is greater than 100° C. and less than 190° C., and the speed ratio of the relaxing roller to the thermosetting roller satisfies this equation: 1.00<relaxing roller speed/thermosetting roller speed<1.10.

An infrared radiation-emitting resin composition includes an infrared radiation-emitting material and a resin. The infrared radiation-emitting material includes a titanium dioxide, a calcined hydrotalcite-like compound, and a nano-sized diamond. In the infrared radiation-emitting material, the mass ratio between the titanium dioxide and the calcined hydrotalcite-like compound is 60:40 to 90:10, while the content of the nano-sized diamond is 0.01 parts by mass or more and 0.5 parts by mass or less with respect to 100 parts by mass of the sum of the titanium dioxide and the calcined hydrotalcite-like compound.

Disclosed is a fiber for artificial hair, containing a polyamide-based resin and a maleic acid-based polymer having at least one maleic acid compound selected from the group consisting of maleic acid and a maleic acid derivative as a monomer unit. Also disclosed is a headdress article including the fiber for artificial hair. Also disclosed is a method for producing a fiber for artificial hair, the method including a step of spinning a composition containing a polyamide-based resin and a maleic acid-based polymer having at least one maleic acid compound selected from the group consisting of maleic acid and a maleic acid derivative as a monomer unit.

A polyamide multifilament includes a polyamide resin and has a total fineness of 30.0 to 150.0 dtex, a tenacity of 7.5 to 10.0 cN/dtex, and an elongation at break of 15.0 to 35.0%. A method of producing the polyamide multifilament includes the steps of: providing polyamide chips; and making yarn using a method of direct spinning and drawing, wherein |ηa−ηb|<0.3 is satisfied, assuming that sulfuric acid relative viscosity of said polyamide chips is ηa, and that sulfuric acid relative viscosity of said polyamide multifilament made into yarn is ηb.

A polyamide multifilament includes a polyamide resin and has a total fineness of 30.0 to 150.0 dtex, a tenacity of 7.5 to 10.0 cN/dtex, and an elongation at break of 15.0 to 35.0%. A method of producing the polyamide multifilament includes the steps of: providing polyamide chips; and making yarn using a method of direct spinning and drawing, wherein |ηa−ηb|<0.3 is satisfied, assuming that sulfuric acid relative viscosity of said polyamide chips is ηa, and that sulfuric acid relative viscosity of said polyamide multifilament made into yarn is ηb.

The present disclosure provides a fabric, a preparation method thereof and clothing formed therefrom. The preparation method includes the following steps: obtaining bio-based synthetic fiber chips from textile waste materials; obtaining extruded filaments from the bio-based synthetic fiber chips by adopting a spinning solution; and weaving and interlocking the extruded filaments with bio-based elastic fibers to obtain the fabric. The prepared fabric is obtained from the textile waste materials, so that waste recycling is realized, and the pollution of the textile wastes to the environment is avoided. The spinning solution is adopted in the preparation process of the fabric, so that the opacity and hydrophilicity of the fabric can be enhanced.

Carbon-based composite materials are provided, such as those comprising at least 80 weight % of graphitic carbon comprising functional groups capable of forming hydrogen bonds, the graphitic carbon in the form of a mat of randomly entangled elongated structures; not more than 20 weight % of a polymer or a nanofiber thereof, dispersed within the graphitic carbon, the polymer or the nanofiber thereof comprising corresponding functional groups capable of forming hydrogen bonds with the functional groups of the graphitic carbon; and a plurality of hydrogen bonds at an interface formed between the graphitic carbon and the polymer or the nanofiber thereof, the plurality of hydrogen bonds formed between the functional groups of the graphitic carbon and the corresponding functional groups of the polymer or the nanofiber thereof.

The present disclosure provides a unique fine fiber material that is formed from a fiber-forming polyamide with a fluorochemical urethane additive, a method of making such fiber material, as well as filter media and filter elements including such fibers.

The present disclosure provides a unique fine fiber material that is formed from a fiber-forming polyamide with a fluorochemical urethane additive, a method of making such fiber material, as well as filter media and filter elements including such fibers.