▎ 摘　　要

NOVELTY - Preparing high anti-penetration composite fiber comprises (1) drying, mixing and melting the anti-penetration functional masterbatch and the polymer matrix and extruding according to the mass ratio 9-20:100, where the anti-penetration functional master batch is obtained by fully mixing titanium dioxide porous nano-sheets, dispersant and the polymer matrix, drying, melt extruding and granulating, the high polymer matrix is polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) or polyamide. The titanium dioxide porous nanosheets is obtained by weighing an ethylene oxide-propylene oxide-ethylene oxide block copolymer and adding it into a mixed aqueous solution of ethanol and ethylene glycol, mixing and dissolving, adding soluble titanium salt and hexamethylenetetramine under vigorous stirring, fully mixing and dissolving, and mixing with the dispersion of graphene oxide nanosheets. USE - The method is useful for preparing high anti-penetration composite fiber, which is used for fabric in textile industry. Can also be used in curtain and other shielding material field. ADVANTAGE - The method: utilizes sheet-shaped porous titanium dioxide sheet as filler, which can greatly enhance the reflection of the fiber to the visible light, absorb and scatter, reduce the light quantity of the textile, realize the effect of low doping amount and good visual shielding and provideshigh anti-penetration fabric. DETAILED DESCRIPTION - Preparing high anti-penetration composite fiber comprises (1) drying, mixing and melting the anti-penetration functional masterbatch and the polymer matrix and extruding according to the mass ratio 9-20:100, where the anti-penetration functional master batch is obtained by fully mixing titanium dioxide porous nano-sheets, dispersant and the polymer matrix, drying, melt extruding and granulating, the high polymer matrix is polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT) or polyamide. The titanium dioxide porous nanosheets is obtained by weighing an ethylene oxide-propylene oxide-ethylene oxide block copolymer and adding it into a mixed aqueous solution of ethanol and ethylene glycol, mixing and dissolving, adding soluble titanium salt and hexamethylenetetramine under vigorous stirring, fully mixing and dissolving, mixing with the dispersion of graphene oxide nanosheets, stirring and refluxing for 0.5-1 hours, transferring the mixed solution system into a high-pressure reaction kettle with a polytetrafluoroethylene lining, and maintaining the reaction at 160-170℃ for 1-3 hours, cooling to room temperature, centrifuging the precipitate, washing the precipitate with deionized water and absolute ethanol, drying, performing heat treatment at 400-600℃ for 2-6 hours in air atmosphere, cooling to room temperature, washing with deionized water and absolute ethanol, and drying. The mass ratio of the ethylene oxide-propylene oxide-ethylene oxide block copolymer to the soluble titanium salt, the hexamethylenetetramine and graphene oxide nanosheets is 1.5-1.6:1:2.7- 2.8:0.4-0.5. The mass ratio of the ethanol to the ethylene glycol and water in the mixed aqueous solution is 1:3-5:0.3-0.5. INDEPENDENT CLAIMS are also included for: a high-impermeable composite fiber; and a high anti-penetration fabric.