1058results about "Monocomponent polyesters artificial filament" patented technology

The invention relates to the technical field of antibacterial and antifouling fabrics, provides a preparation method of an antibacterial and antifouling fabric, and solves the problem of poor fabric durability caused by single functional component and lack of physical protection in the prior art. The preparation method comprises the following steps: S1, preparing MOFs loaded antibacterial fibers: blending a metal organic framework antibacterial composite nanomaterial and a polymer matrix material, and carrying out melt spinning to prepare the MOFs loaded antibacterial fibers; s2, constructing a self-cleaning functional coating: dispersing the fluorinated nanoparticles and a polymer adhesive in a solvent to prepare a self-cleaning coating solution; s2, performing surface activation treatment on the MOFs-loaded antibacterial fiber obtained in the step S1, soaking the MOFs-loaded antibacterial fiber in the self-cleaning coating liquid, and performing pulling and curing to form a bionic micro-nano structure coating on the surface of the MOFs-loaded antibacterial fiber so as to obtain a functional composite fiber; s3, spinning forming: taking the functional composite fibers obtained in the step S2 as warp yarns and / or weft yarns, and weaving to obtain the antibacterial and antifouling fabric.

The invention relates to the technical field of fabrics, in particular to a moisture absorption and sweat releasing fabric and a preparation process thereof.The preparation process includes the following steps that raw materials including, by weight, 35-40 parts of modified polyester silk, 20-25 parts of functional yarn and 8-12 parts of polyester fiber are weighed; a preparation method of the modified polyester yarn comprises the following steps: melting, blending and extruding polyester resin and a modifier according to a weight ratio of 100: 5; weaving the modified polyester yarns, the functional yarns and the polyester fibers into a knitted fabric body by using a circular knitting machine; setting the knitted fabric body at a high temperature of 115 DEG C for 50 seconds, and obtaining the moisture-absorbing and sweat-releasing fabric after setting is finished. According to the moisture absorption and sweat releasing fabric, the modified polyester yarn, the functional yarn and the polyester fiber are woven into the knitted fabric through the circular knitting machine, the modified polyester yarn is improved and optimized by matching polyester resin with the modifier, and the moisture absorption and sweat releasing performance, the elasticity and the wear resistance of the polyester yarn are enhanced through mutual matching and mutual assistance of the raw materials.

The invention belongs to the technical field of high polymer materials, and particularly relates to a high-strength papermaking forming net fiber. Comprising the following raw materials in parts by weight: 75-90 parts of polyethylene glycol terephthalate, 5-15 parts of polybutylene terephthalate, 3-10 parts of a modified fiber filler, 2-5 parts of modified graphene, 2-8 parts of silicon dioxide, 0.5-2 parts of a silane coupling agent KH-560, 1-3 parts of an anti-hydrolysis agent, 0.5-1.5 parts of an antioxidant and 0.3-1 part of a lubricant. Wherein the modified fiber filler is prepared by sequentially carrying out modification processes such as silane coupling agent, citric acid-glycerol esterification, iron bismuth oxide loading and the like on glass fibers; the modified graphene is prepared by introducing dopamine, cerium ions and glycidyl methacrylate for modification. The mechanical strength, the hydrolysis resistance and the wear resistance of the fiber are remarkably improved through the synergistic effect of all the components and the melt spinning-multi-stage stretching process, and the fiber is particularly suitable for a forming net of a high-speed paper machine.

The invention relates to the technical field of degradable materials, and discloses a water-soluble degradable fiber and a preparation method thereof. The water-soluble degradable fiber disclosed by the invention is prepared by taking polylactic acid as a main matrix, adding modified sodium lignin sulfonate, polyvinyl alcohol and polyethylene wax, blending, carrying out melt extrusion, and carrying out melt spinning. The fiber has water solubility, degradability, sand carrying performance and salt resistance, and has a good application prospect in a fracturing fluid used in a well drilling fracturing process based on the advantages of water solubility, degradability, sand carrying performance and salt resistance.

The invention provides an antibacterial hydrophilic polyester staple fiber and a preparation method thereof, and relates to the technical field of new textile materials, the antibacterial hydrophilic polyester staple fiber takes 1.56 dtex * 38mm polyester staple fiber as a basic specification, a melt direct spinning online adding technology is adopted, 2% of composite functional master batch is accurately added into a polyester melt, and the antibacterial hydrophilic polyester staple fiber is prepared. The master batch comprises a quaternary ammonium salt organic antibacterial agent and a hydrophilic modified polyester carrier grafted with polyethylene glycol (PEG), and spinning through a cross-shaped special-shaped spinneret plate, and combining with an optimized post-spinning process. The fiber has lasting antibacterial property and self-hydrophilic property, can meet the production requirements of high-end spunlace non-woven fabrics without after-treatment, and is particularly suitable for the fields of medical protection, health care and the like.

Provided is a liquid crystalline polyester fiber capable of achieving improved weatherability without kneading a UV absorber into the fiber or attaching a weatherable UV absorber after fiber spinning. The liquid crystalline polyester is a fiber that consists essentially only of a liquid crystalline polyester, in which the amount of UV absorber used is 5 mass % or less, and the strength retention in the weather fastness test with xenon arc lamp light in accordance with JIS L 0891 is 60% or more.

The invention discloses an anisotropic electrostatic spinning patch with ultrasonic response and a preparation method thereof, a fiber membrane with a controllable anisotropic structure is constructed by a biodegradable polymer, antibacterial nanoparticles and a photoinitiator system through a step-by-step directional electrostatic spinning process, so that the mechanical matching property of the fiber membrane is improved; cell growth can be directionally guided and tissue regeneration can be accelerated by combining the piezoelectric material characteristics of the introduced biodegradable polymer with piezoelectric characteristics and electric field stimulation induced by the fiber topological structure; meanwhile, a zwitterionic coating is generated on the surface of the fiber membrane in situ by utilizing a single-sided photocuring technology, and an anti-adhesion function is realized on the single side of the fiber membrane. Furthermore, the soft tissue repair patch which has multiple functions of adjustable mechanical property, infection resistance, adhesion resistance and the like and has better structural mechanical suitability, function integration and tissue regeneration guiding capability is prepared by adopting the anisotropic electrostatic spinning patch with ultrasonic response.

The invention relates to the technical field of fiber fabrics, and particularly discloses a moisture-absorbing and quick-drying polyester fiber, a fabric and a preparation process of the moisture-absorbing and quick-drying polyester fiber, the moisture-absorbing and quick-drying polyester fiber fabric is obtained by dipping a polyester fiber fabric in a finishing liquid, and the polyester fiber fabric is obtained by knitting mixed yarns; the blended yarn is composed of moisture-absorbing and quick-drying polyester fibers, cotton fibers and spandex fibers according to the mass ratio of 100: (25-42): (5-12), and the moisture-absorbing and quick-drying polyester fibers are obtained by melt blending and spinning of polyester chips and modified composite particles. The modified composite particles are obtained by blending alkenylated titanium dioxide coated silicon dioxide composite particles, maleic anhydride and butenedioic acid mono-esterification-beta-cyclodextrin, the prepared fabric has good hygroscopicity, sweat can be rapidly captured, rapid diffusion and evaporation are achieved through a moisture guiding channel in the fiber, collaborative optimization of moisture absorption, rapid drying and washing fastness is achieved, and the fabric has the good moisture absorption effect. Meanwhile, the fabric is good in comfort and durability and excellent in mechanical property.

The invention relates to the technical field of chemical fiber manufacturing, in particular to a preparation process of graphene reinforced porous hollow polyester fibers. The problems that existing polyester fibers are insufficient in mechanical property and poor in moisture absorption and air permeability are solved. The preparation method comprises the following steps: modifying a PET sheet by using 2, 2-dimethylolpropionic acid and hydroxyl-terminated polydimethylsiloxane to obtain modified PET; the preparation method comprises the following steps: taking chitosan modified graphene as a carrier, and loading metal ions to obtain loaded graphene; polyethylene glycol and sodium bicarbonate are used as pore-foaming agents; modifying octadecyl dimethyl allyl ammonium chloride to obtain an antibacterial toughening agent; all the components are mixed, and the polyester fiber is prepared through melt spinning, stretching, heat treatment and alkali treatment. The mechanical property of the fiber is improved through the introduction of graphene and the modification treatment of the PET sheet; by utilizing the composite pore-foaming agent and adjusting the process, the moisture absorption and air permeability of the fiber are improved, and the service life of the fiber is prolonged.

The invention relates to the technical field of wave-absorbing materials, in particular to a broadband wave-absorbing material and a preparation method and application thereof. According to the preparation technology of the wave-absorbing material, a non-woven fabric carrier with graded pores and continuous gradient distribution is constructed by virtue of induction of a centrifugal force field, and then the non-woven fabric carrier is placed in a magnetic dispersion liquid system to be subjected to impregnation ultrasonic dispersion load treatment, so that heterogeneous interface structures are constructed on the surfaces and the interiors of fibers, and the prepared material fabric has the characteristics of light weight and broadband wave-absorbing performance; the method is suitable for military and civil high-tech fields such as electromagnetic protective clothing and invisibility. The method has the advantages of short production period, high raw material utilization rate and the like.

The present invention discloses an aliphatic-aromatic polyester composition, polyester fiber, and its preparation and use. The aliphatic-aromatic polyester composition of the present invention comprises: i) an aliphatic-aromatic polyester based on an aliphatic dicarboxylic acid, an aromatic dicarboxylic acid, and an aliphatic dihydroxy compound; and ii) a titanium element content of 55 to 88 ppm, based on the weight of the aliphatic-aromatic polyester composition. The aliphatic-aromatic polyester composition has an acid value of 0.84 mg KOH / g or less according to standard DIN EN 12634-1998. The aliphatic-aromatic polyester composition of the present invention not only has a low yellowness index and good colorability, but also effectively improves hydrolysis resistance, making it suitable for wide use in the field of polyester fibers.

The invention discloses a moisture absorption and sweat releasing polyester fiber and a preparation method and application thereof, and relates to the field of polyester fibers. The moisture absorption and sweat releasing polyester fiber is prepared from the following raw materials in parts by weight: 85 to 95 parts of fiber-grade PET polyester, 4 to 12 parts of PET copolymer, 0.5 to 2.0 parts of dispersing agent and 0.1 to 0.5 part of antioxidant, wherein the PET copolymer is prepared from the following raw materials: terephthalic acid, ethylene glycol, neopentyl glycol, a catalyst and polyethylene glycol. On the basis of terephthalic acid and ethylene glycol, neopentyl glycol and polyethylene glycol are further added, the formed PET copolymer serves as a moisture absorption and sweat releasing modifier and is subjected to melt blending and spinning with fiber-grade PET polyester, hydrophilic groups and a fiber structure are fused into a whole, the moisture absorption and sweat releasing performance of the prepared polyester fiber is improved, and the moisture absorption and sweat releasing effects of the polyester fiber are improved. The durability of the moisture absorption and sweat releasing performance is also ensured.

The invention belongs to the technical field of antibiosis, and discloses a photodynamic antibacterial modified polyester fiber and a preparation method thereof.The preparation method comprises the steps that 1, SIPM serves as a surfactant, water-soluble silver salt serves as a precursor, ascorbic acid serves as a reducing agent, and water-soluble nano-silver powder is prepared; (2) after PTA and EG are subjected to esterification reaction, EG, SIPM and water-soluble nano-silver powder are added for polymerization reaction, and the photoresponse active material is obtained; (3) preparing the nano-silver antibacterial master batch by taking ECDP as a base material of the nano-silver antibacterial master batch and a photoresponse active material as an additive; and (4) carrying out melt blending on the modified polyester, a water-soluble pore-foaming agent and the nano-silver antibacterial master batch to obtain a spinning melt, spinning the spinning melt, and washing with water to obtain the photodynamic antibacterial modified polyester fiber. The photodynamic antibacterial modified polyester fiber disclosed by the invention has excellent antibacterial and antiviral properties.

The invention discloses a biodegradable flexible conductive high-hydrophobicity sensor substrate and a preparation method and application thereof.The preparation method comprises the steps that a polylactic acid electrostatic spinning solution and a chitosan / polyethylene oxide mixed electrostatic spinning solution are prepared on the basis of a safe and non-toxic food-grade material; the preparation method comprises the following steps: sequentially spinning by adopting an electrostatic spinning technology to form a sandwich structure flexible substrate, transferring a carbon nano tube conductive film, and tightly attaching the carbon nano tube conductive film to the surface of a polylactic acid layer of the sandwich structure substrate, thereby finally obtaining the flexible conductive high-hydrophobicity composite substrate. According to the invention, a hydrophobic-hydrophilic-hydrophobic sandwich structure is constructed through multi-layer electrostatic spinning, and a surface carbon nanotube conductive layer is cooperated, so that the substrate has high hydrophobicity, excellent conductivity and flexible tensile property. The preparation method has the characteristics of controllable process, low cost and environmental friendliness, and the obtained substrate is expected to have wide application prospects in the fields of food packaging, sensor substrates, intelligent wearing, health monitoring and the like.

A preparation method of the outdoor high-strength polyester fiber with the radiation refrigeration function comprises the following steps that titanium dioxide, silicon dioxide, silicon carbide and zirconium phosphate are blended and ground in proportion and then dispersed in an acetone solution, a dispersing agent is added, and nano-particle dispersion liquid is formed through ultrasonic treatment; mixing the nano-particle dispersion liquid with the polyester chips; feeding the mixed composite material into a screw extruder for melt blending to form a spinning solution; after being accurately metered by a metering pump, the spinning solution is extruded by a spinneret plate to form fiber tows, and the spinneret plate is provided with a slow cooling and heating device; and performing post-treatment on the fiber tows to obtain the high-strength polyester fibers. According to the invention, a specific combination of titanium dioxide, silicon dioxide, silicon carbide and zirconium phosphate is selected, and a specific slow cooling technology and high-power stretching shaping are matched, so that the fiber has excellent radiation refrigeration performance and mechanical strength, and can be widely applied to the fields of outdoor clothing, awning cloth, car clothing and the like.

The invention discloses environment-friendly wormwood cloud wool and a preparation method thereof, and relates to the technical field of cloud wool. The preparation method comprises the following steps: adding titanium dioxide powder into an ethyl sorbate solution, coating a polyethyl sorbate film through an in-situ polymerization method, hydrolyzing ethyl sorbate to release carboxyl to obtain modified titanium dioxide powder, and mixing the modified titanium dioxide powder with waste polyester and wormwood powder to form a spinning solution; secondly, N, N, N ', N'-tetramethyl-p-phenylenediamine and 6-iodine-1-hexene are subjected to a reaction to prepare quaternary ammonium salt, double bonds are introduced into a compound, then the compound and 11-mercaptoundecyltrimethoxysilane are subjected to an ultraviolet click reaction, and mercapto modified quaternary ammonium salt is prepared; sulfydryl modified quaternary ammonium salt is used as an antistatic agent to be added into a spinning solution, the environment-friendly wormwood cloud wool is prepared through wet spinning, sulfydryl modification is beneficial to uniform dispersion of the quaternary ammonium salt in the spinning solution, and uneven fiber structure or breakage caused by uneven dispersion of an additive is reduced. The environment-friendly wormwood cloud velvet prepared by the preparation method disclosed by the invention has antibacterial and antistatic effects.

The invention discloses an anti-fouling curtain structure for water dredging engineering, and belongs to the technical field of environment protection of dredging engineering, the anti-fouling curtain structure for water dredging engineering comprises a floating body, an anti-fouling curtain and a vertical body, the floating body is arranged at the top end of the anti-fouling curtain, the vertical body is arranged at the bottom end of the anti-fouling curtain, and the anti-fouling curtain is geotechnical cloth; the geotechnical cloth is prepared from the following components in parts by weight: 100 to 150 parts of polyester, 20 to 50 parts of copolyester and 5 to 30 parts of inorganic filler, the copolyester is a copolymer of terephthalic acid, 5-sulfoisophthalic acid sodium salt, ethylene glycol and dihydroxyl-terminated polyvinyl imidazole, and the geotechnical cloth is further prepared by a post-treatment step. According to the invention, the copolyester composed of terephthalic acid, sodium 5-sulfoisophthalic acid, ethylene glycol and dihydroxyl-terminated polyvinyl imidazole and the inorganic filler are added into the polyester fiber, and the polyester fiber is modified through a post-treatment step, so that the alkali resistance and the antifouling property of the antifouling curtain are improved.

The invention discloses a modified polyester fiber as well as a preparation method and application thereof, and relates to the field of fibers. When the modified polyester fiber is prepared, nano shell powder sequentially reacts with 3-aminopropyltrimethoxysilane, 4-fluoro-2-hydroxybenzaldehyde and 1-(4-hydroxyphenyl) biguanide hydrochloride, and functionalized shell powder is prepared; the preparation method comprises the following steps: reacting diethyl (aminomethyl) phosphonate, formaldehyde and glyoxal to prepare imidazolium salt phosphoric acid; and mixing the functionalized shell powder and polyester, spinning, carrying out surface alkali treatment, and finally carrying out surface finishing by using imidazolium salt phosphoric acid to obtain the modified polyester fiber. The modified polyester fiber prepared by the invention has excellent flame retardance, antibacterial property and light aging resistance.

The invention discloses a moisture-absorbing, antibacterial and deodorizing polyester fiber fabric and a preparation method thereof, belongs to the technical field of fiber fabric preparation, and aims to solve the technical problem that the antibacterial and deodorizing performance and moisture-absorbing performance of a polyester fiber fabric in the prior art need to be further improved. The preparation method specifically comprises the following preparation steps: adding the polyethylene glycol terephthalate, the antibacterial modified filler and the auxiliary additive into a double-screw extruder, and carrying out melt spinning to obtain the antibacterial polyester fiber. The antibacterial modified filler is prepared, the filler and polyethylene glycol terephthalate are blended, melted and spun, antibacterial polyester fibers are prepared, quaternary ammonium salt type antibacterial monomers and sulfonate type hydrophilic monomers are grafted through alkalization treatment and the electron beam irradiation technology, the antibacterial and deodorization performance of the fiber fabric is improved, and the antibacterial and deodorization functions of the fiber fabric are improved. The moisture absorption performance is also improved.

A fabric that includes a loop of a yarn including a voltage generating filament. The fabric has a value of X of 1,000 or more, where X=(A+B)×C×D×E, and wherein: A is a loop angle of the loop of the yarn when the fabric is stretched by 10%, B is a connection angle of the loop of the yarn when the fabric is stretched by 10%, C is a number of the loops of the yarn per 1 cm2 of the fabric, D is a force (N) applied per basis weight (g / m2) of the fabric, and E is a surface potential (V) of the yarn.

The invention relates to the technical field of food fresh-keeping materials, and discloses a preparation method of an intelligent response degradable fruit and vegetable fresh-keeping film based on a Janus structure, the intelligent response degradable fruit and vegetable fresh-keeping film comprises a hydrophobic layer and a hydrophilic layer, the hydrophobic layer is an electrostatic spinning film formed by compounding eugenol-loaded ZIF-8 nano-particles and polylactic acid, and the hydrophilic layer is an electrostatic spinning film formed by compounding eugenol-loaded ZIF-8 nano-particles and polylactic acid. The hydrophilic layer is an electrostatic spinning membrane formed by compounding chitosan and gelatin, the surface of the hydrophobic layer is covered with the hydrophilic layer through an electrostatic spinning technology, the ZIF-8 nanoparticles are synthesized through a room-temperature stirring method, and synthesis raw materials are a 2-methylimidazole methanol solution and a zinc nitrate methanol solution. By means of the pH response characteristic of the ZIF-8 nano-particles, pH value change signals generated in the early stage of fruit and vegetable putrefaction can be sensitively captured, loaded antibacterial components are accurately released through ZIF-8 framework dissociation, targeted inhibition on putrefying bacteria is achieved, passive protection is converted into active intervention, the fruit and vegetable putrefaction process is effectively delayed, the fresh-keeping effect is improved, and the fresh-keeping time is prolonged.

The invention relates to the field of textiles, and particularly discloses a preparation process of antibacterial fibers, which comprises the following steps: S1, respectively drying and preparing polymer slices and an antibacterial agent; s2, performing melt spinning on the polymer slices and an antibacterial agent, performing air cooling, and then performing traction and winding to obtain antibacterial fibers; wherein the antibacterial agent is prepared by mixing dodecyl trimethyl ammonium chloride, polyvinylpyrrolidone and core-shell type antibacterial particles according to the mass ratio of (0.4-0.5): (0.1-0.2): 1, the core-shell type antibacterial particles are prepared by loading nano-zinc oxide and nano-silver particles on intercalation modified montmorillonite and then forming a silicon dioxide coating layer through a sol-gel method, and the core-shell type antibacterial particles are prepared from the silicon dioxide coating layer through a sol-gel method. And carrying out spray drying to obtain the core-shell antibacterial particles. The preparation method has the characteristic of improving the antibacterial durability and uniformity of the antibacterial fiber.

The invention discloses a cool breathable fiber and a preparation method thereof, and relates to the field of fibers. When the cool-feeling breathable fiber is prepared, shell powder sequentially reacts with 3-chloropropyltrimethoxysilane, 2, 6-dihydroxy naphthol and 3, 3-diphenyl-2-propyne-1-alcohol, and functionalized shell powder is prepared; the preparation method comprises the following steps: reacting (formylmethyl) diethyl phosphate with (4-pyridyl) acetone, firstly polymerizing with dimethyl terephthalate and ethylene glycol, and then reacting with N-[4-(aminomethyl) phenyl] guanidine to prepare modified polyester; and finally, mixing the modified polyester, the functionalized shell powder and zinc acetate, and spinning to obtain the cool breathable fiber. The cool breathable fiber prepared by the invention has flame-retardant, durable and antibacterial capabilities.

The invention relates to the technical field of polyester fibers, in particular to a preparation method of antibacterial modified polyester fibers, the prepared antibacterial modified polyester fibers have excellent antibacterial performance, a multi-layer antibacterial system is formed by introducing a nano-zinc oxide and Schiff base compound antibacterial agent into the polyester fibers, and the antibacterial performance of the polyester fibers is improved. Nano zinc oxide and copper / zinc oxide particles have broad-spectrum antibacterial property and can destroy cell walls and cell membranes of bacteria so as to achieve the antibacterial effect, and Schiff base as an organic antibacterial agent can be combined with receptors on the cell membranes of the bacteria to enhance the antibacterial effect; chitosan and cinnamyl aldehyde are adopted as raw materials for preparation of the Schiff base, and the two substances have good biocompatibility and degradability, so that the Schiff base compound antibacterial agent is safer and more environmentally friendly in the fiber; the nano zinc oxide, the copper / zinc oxide particles, the chitosan, the cinnamyl aldehyde and the like in the raw materials are all environment-friendly materials and are good in degradability, and environmental pollution and ecological damage can be reduced.

The invention discloses mint cool cloud velvet and a preparation method thereof, and relates to the technical field of cloud velvet. Silicon dioxide loaded with a composite cool feeling agent is used as cool feeling particles, and the cool feeling particles and PET slices are subjected to melt blending to prepare cool feeling master batches; the silane coupling agent modified jade powder and the cool master batch are added into the PET fiber to form a two-stage cool enhancing effect. PET hollow spinning is adopted to form a hollow structure, and a phase-change material is poured into the hollow structure for hot-pressing fusion sealing. The solid-liquid phase change mechanism of the selected phase change material enables the prepared cloud velvet to trigger heat absorption at a slightly high temperature in a comfortable area of a human body, so that the effect of modifying a tone to cool and the effect of staggering are achieved, and the cool feeling persistence is realized. In the fiber forming process, an all-dimensional annular high-speed strong cold air blowing technology is adopted, a spinning melt is instantly and rapidly cooled with extremely small errors, a unique crystalline state, different from that of other polyester fibers, of cloud wool is caused, and the effect of combining light weight and fluffiness is achieved. The cloud velvet prepared by the invention has the effects of long-acting cool feeling and fluffiness.

The invention provides a directional moisture absorption and sweat releasing functional fabric and a preparation method thereof.The fabric comprises a sweat releasing and drying layer, a capillary moisture guiding layer and a hydrophilic moisture absorption layer from outside to inside, the hydrophilic moisture absorption layer is a cellulose acetate electrostatic spinning super-hydrophilic modified layer, the capillary moisture guiding layer is formed by weaving porous polyester yarn, and the hydrophilic moisture absorption layer is a super-hydrophilic modified cellulose acetate electrostatic spinning super-hydrophilic modified cellulose acetate electrostatic spinning super-hydrophilic modified cellulose acetate electrostatic spinning super-hydrophilic modified cellulose acetate electrostatic spinning super-hydrophilic modified fiber. The perspiration drying layer is a silane super-hydrophobic modified layer. Porous cross-section polyester fibers are prepared by adopting a washable template method, the moisture conductivity is improved, an electrostatic spinning cellulose acetate nanofiber membrane is subjected to super-hydrophilic modification, the sweat absorption rate is increased, the skin-friendly performance is improved, a sweat-releasing and drying layer is subjected to silane hydrolysis spraying and then heat treatment to form a super-hydrophobic siloxane coating, the surface dryness is enhanced, and the moisture absorption rate is increased. Unidirectional migration and rapid evaporation of sweat from inside to outside are achieved.

The invention provides a thermal insulation composite yarn based on aerogel and a preparation method thereof, and relates to the field of textile fiber manufacturing. The aerogel-based heat-preservation composite yarn comprises a core layer, which is composed of aerogel composite fibers containing silicon dioxide aerogel and a first polymer; the middle layer is coated outside the core layer and is formed by thermoplastic elastomer filaments without aerogel; and the outer layer is coated outside the middle layer and consists of second polymer filaments which do not contain aerogel. According to the aerogel-based heat preservation composite yarn, the heat insulation performance, the mechanical performance and the wear resistance are comprehensively improved.

The invention relates to the technical field of labor protection clothing manufacturing, and discloses novel labor protection clothing containing bamboo fibers and a preparation method of the novel labor protection clothing. 20%-23% of cotton fiber; 28%-32% of polyester fibers; 4%-6% of nanofiber felt; 2%-3% of antistatic conductive wires; 2%-3% of an acid-proof material; 2%-3% of an alkali-proof material; 5%-7% of a flame-retardant material and 1.2%-1.6% of a flame retardant; 0.5%-1% of an acid and alkali resistant finishing agent; 0.5%-1% of an anti-shrinking agent; the preparation method comprises the steps of material pretreatment, multi-component fiber precise premixing, embedded weaving conductive yarn spinning, high-density weaving, nano functional layer compounding and synergistic after-finishing, and the bamboo fiber, the functional polyester and the nano fibrofelt are compounded through a ternary synergistic system of the bamboo fiber, the functional polyester and the nano fibrofelt and a low-temperature hot melting point bonding and electrostatic electret integrated compounding process. Therefore, the beneficial effects that the air permeability is improved, the shrinkage rate is reduced and the color fastness to washing is improved on the premise that the safety protection levels of flame retardance, acid and alkali resistance and static resistance are not reduced are achieved.

The invention relates to a temperature-regulating chemical fiber as well as a preparation method and application thereof, and belongs to the technical field of fibers. The temperature-regulating chemical fiber comprises the following components: a fiber-forming polymer and a phase-change material, the phase change material comprises polyimide-modified carbon nanotube composite aerogel and a polyethylene glycol phase change raw material, the polyimide raw material monomer comprises a carboxyl side group functional group. By utilizing the characteristic of large specific surface area of the prepared polyimide-modified carbon nanotube composite aerogel, the phase-change material is adsorbed in holes by virtue of a capillary effect, so that the phase-change material is not easy to leak, and the phase-change material is obtained. The high stability and high thermal conductivity of the porous material further improve the application performance of the composite material. Moreover, the introduction of polyimide side chain carboxyl and modified carbon nanotubes is beneficial to formation of hydrogen bonds with polyethylene glycol phase change raw materials, so that leakage of the phase change raw materials is further prevented, and the stability of the phase change raw materials is improved.

The invention discloses a preparation method of a warm-keeping and health-care composite fabric, and relates to the technical field of functional fabrics. The preparation method comprises the following steps: firstly, combining fumed silica with graphene oxide hydrogel to prepare mixed aerogel; the mixed aerogel is combined with allyl trichlorosilane, and is grafted to a macromolecular chain of polypropylene through maleic anhydride, so that the compatibility is improved, and the agglomeration problem is solved; secondly, calcining tourmaline, then directly carrying out quenching hydration modification, combining Si-OH groups on the surface with active groups in a polyester molecular chain, and spinning into hollow fibers; the mixed aerogel can absorb far infrared rays dissipated and emitted by the modified tourmaline, and the aerogel absorbing the far infrared rays can generate a resonance effect and a warm effect and permeate into the deep layer of the skin; the modified tourmaline has the capability of generating negative ions, and the gull rock powder is added for combined action, so that the antibacterial effect is achieved by destroying the structure of bacteria, and the health-care effect is achieved. The composite fabric prepared by the invention has warm-keeping and health-care effects.