The disclosure provides a method for improving the strength and dyeing of wool fibers, and belongs to the technical field of modification of textile materials. By using the feature that protein fiber macromolecules contain a large number of active groups such as hydroxyl groups, amino groups and carboxyl groups, which easily react with polyphenolic pigments formed by a phenolic compound catalyzed by an enzyme to form covalent bonding, the disclosure realizes low temperature dyeing of wool fibers while improving the fiber strength. The disclosure has mild operating conditions easy to control, and in view of increasingly emphasis on environmental protection nowadays, the use of the biological enzyme for dyeing wool fibers is safe, environmentally friendly and efficient, and has a long-term development prospect.

Ultraviolet protective textiles and methods of making ultraviolet protective textiles including a sheet substrate comprising a synthetic, semi-synthetic or natural textile or blend thereof, a UV absorbing chemical present on the substrate, and a capping agent bound to the UV absorbing chemical. The UV absorbing chemical may be an organic acid, protein, flavonoid, or a polyphenolic compound, for example, such as tannic acid. The capping agent may be an alkylbenzene based surfactant, phenylethanoid, monophenol, or protein, for example, such as whey or casein.

Ultraviolet protective textiles and methods of making ultraviolet protective textiles including a sheet substrate comprising a synthetic, semi-synthetic or natural textile or blend thereof, a UV absorbing chemical present on the substrate, and a capping agent bound to the UV absorbing chemical. The UV absorbing chemical may be an organic acid, protein, flavonoid, or a polyphenolic compound, for example, such as tannic acid. The capping agent may be an alkylbenzene based surfactant, phenylethanoid, monophenol, or protein, for example, such as whey or casein.

The invention provides a silver-plated conductive nylon fiber and a preparation method thereof. The method includes: immersing a nylon fiber in an aqueous solution containing a polyphenolic compound at 60 C. to 70 C., adding a water-soluble oxidant into the solution, continuously reacting at 70 C. to 80 C., and obtaining a polyphenol grafted nylon fiber, where the polyphenolic compound contains a catechol group; immersing the polyphenol grafted nylon fiber into a solution containing silver ions at 15 C. to 25 C. for reaction, and raising the temperature to 70 C. to 80 C. for continuous reaction to obtain a surface-activated nylon fiber; and carrying out chemical silver plating treatment on the surface-activated nylon fiber to obtain the silver-plated conductive nylon fiber. The method does not require a heavy metal sensitizer and therefore is non-toxic and environment-friendly, and the fiber strength is maintained.

The invention provides a silver-plated conductive nylon fiber and a preparation method thereof. The method includes: immersing a nylon fiber in an aqueous solution containing a polyphenolic compound at 60 C. to 70 C., adding a water-soluble oxidant into the solution, continuously reacting at 70 C. to 80 C., and obtaining a polyphenol grafted nylon fiber, where the polyphenolic compound contains a catechol group; immersing the polyphenol grafted nylon fiber into a solution containing silver ions at 15 C. to 25 C. for reaction, and raising the temperature to 70 C. to 80 C. for continuous reaction to obtain a surface-activated nylon fiber; and carrying out chemical silver plating treatment on the surface-activated nylon fiber to obtain the silver-plated conductive nylon fiber. The method does not require a heavy metal sensitizer and therefore is non-toxic and environment-friendly, and the fiber strength is maintained.

A fiber-treating agent, where the fiber-treating agent is a one part fiber-treating agent including a single composition or a multiple-part fiber-treating agent including a plurality of compositions. The fiber-treating agent contains the following components (A) to (C) in a total composition thereof, and where, for the one-part fiber-treating agent, a part or all of the components (A) and (B) is optionally a condensate formed from the components: (A): a compound having a structure wherein a methylol group is bonded to each of two nitrogen atoms in the compound, (B): a phenolic compound having an electron donating group on at least one of meta-positions and a hydrogen atom on at least one of ortho-positions and a para-position, wherein the electron donating group on the meta-position optionally forms, together with adjacent carbon atoms, a benzene ring optionally substituted with a hydroxy group, and (C): water.

The invention provides a silver-plated conductive nylon fiber and a preparation method thereof. The method includes: immersing a nylon fiber in an aqueous solution containing a polyphenolic compound at 60? C. to 70? C., adding a water-soluble oxidant into the solution, continuously reacting at 70? C. to 80? C., and obtaining a polyphenol grafted nylon fiber, where the polyphenolic compound contains a catechol group; immersing the polyphenol grafted nylon fiber into a solution containing silver ions at 15? C. to 25? C. for reaction, and raising the temperature to 70? C. to 80? C. for continuous reaction to obtain a surface-activated nylon fiber; and carrying out chemical silver plating treatment on the surface-activated nylon fiber to obtain the silver-plated conductive nylon fiber. The method does not require a heavy metal sensitizer and therefore is non-toxic and environment-friendly, and the fiber strength is maintained.

The invention provides a silver-plated conductive nylon fiber and a preparation method thereof. The method includes: immersing a nylon fiber in an aqueous solution containing a polyphenolic compound at 60? C. to 70? C., adding a water-soluble oxidant into the solution, continuously reacting at 70? C. to 80? C., and obtaining a polyphenol grafted nylon fiber, where the polyphenolic compound contains a catechol group; immersing the polyphenol grafted nylon fiber into a solution containing silver ions at 15? C. to 25? C. for reaction, and raising the temperature to 70? C. to 80? C. for continuous reaction to obtain a surface-activated nylon fiber; and carrying out chemical silver plating treatment on the surface-activated nylon fiber to obtain the silver-plated conductive nylon fiber. The method does not require a heavy metal sensitizer and therefore is non-toxic and environment-friendly, and the fiber strength is maintained.

To provide an adhesive composition that can ensure a desired adhesion property without using resorcin and that does not impair workability during use, as well as a resin material, a rubber article, an organic fiber-rubber composite, and a tire using the adhesive composition. Provided is an adhesive composition containing (A) a rubber latex with unsaturated diene and (B) polylysine. Also provided are a resin material, a rubber article, an organic fiber-rubber composite, and a tire using this adhesive composition.

Compositions are disclosed suitable as biobased and compostable binders for fiber-based materials, paper, textiles, woven and nonwoven materials. The compositions are adjusted to a pH<7 and comprise a water soluble biobased polymer or a protein hydrolysate, a support agent selected from at least one in the group of saccharides and polyols, and tannic acid. Also disclosed is fiber-based materials, paper, textiles, woven and nonwoven materials treated with the compositions and methods for such treatment.