3402results about "Monocomponent polyesters artificial filament" patented technology

A system for recycling textiles includes a sorting module configured to automatically remove trims and to sort textiles into the fabric streams; a first decoloring system configured to receive the non-black and white cotton fabric stream and to provide a de-colored cotton fabric stream; a dry sanitization system configured to provide a sanitized cotton fabric stream and a sanitized polyester fabric stream; a second decoloring system configured to provide a semi de-colored cotton / polyester blend fabric stream; a fabric separation system configured to provide pure polyester fiber; a decoloring system configured to provide a de-colored polyester fabric stream; a cotton fiber recovery system configured to receive the de-colored or black or white and sanitized cotton fabric, and sanitized denim fabric streams; and a polyester fiber recovery system configured to receive the de-colored or black or white and sanitized polyester fabric streams.

The invention relates to the field of functional master batch materials, in particular to a phase-change energy temperature-adjusting fiber master batch and a fat-burning fabric thereof. The phase-change energy temperature-regulating fiber master batch is prepared from a composite phase-change material and polyethylene glycol terephthalate slices through melt extrusion and granulation, the fat-burning fabric is prepared from the phase-change energy temperature-adjusting fiber master batch and polyethylene glycol terephthalate slices through melt spinning, network compounding and weaving processing. By introducing the microencapsulated phase-change material and the high-thermal-conductivity filler, in the melt extrusion process, the microencapsulated phase-change material and the high-thermal-conductivity filler can be uniformly dispersed in the matrix material to form stable fiber master batches, form an efficient thermal-conductivity structure and provide excellent thermal regulation performance; meanwhile, microencapsulation can improve the stability and dispersity of the phase-change material, and the fat-burning fabric is prepared through melt spinning and weaving of fiber master batches, so that the heat-conducting property of the product is improved, and the continuous fat-burning effect is achieved.

The invention provides a flame-retardant heat-insulating fabric for fire-fighting clothes and a preparation process thereof, and belongs to the technical field of fire-fighting fabrics. The preparation process comprises the following steps: preparing coated modified ammonium polyphosphate; modified expanded perlite; preparing a flame-retardant outer-layer fabric; preparing a heat insulation core layer fabric; preparing an antibacterial inner layer fabric; and bonding. The flame-retardant heat-insulating fabric for the fire-fighting clothes comprises a flame-retardant outer-layer fabric, a heat-insulating core-layer fabric and an antibacterial inner-layer fabric, ammonium polyphosphate is dispersed in deionized water, polyethyleneimine is added under the acidic condition, amino on the polyethyleneimine and ammonia ions of the ammonium polyphosphate are subjected to an ion exchange reaction, and the flame-retardant heat-insulating fabric for the fire-fighting clothes is obtained. According to the flame-retardant outer-layer fabric, ammonium polyphosphate is preliminarily coated, then a hydroxyethylidene diphosphonic acid solution is added for a salt forming reaction, coated modified ammonium polyphosphate with a core-shell structure is prepared, the coated modified ammonium polyphosphate and polyester powder are mixed and granulated, then the flame-retardant outer-layer fabric is prepared, and the flame-retardant property of the flame-retardant outer-layer fabric can be effectively improved.

The invention relates to a cool master batch and a preparation method thereof, a cool polyester fiber and a cool polyester fiber fabric, the cool master batch is prepared from the following components in parts by mass: 70-90 parts of polyester and 10-30 parts of a cool agent, and the cool agent is prepared by hybridizing boron nitride and a carbon material according to a mass ratio of (98-99.9): (0.1-1) to obtain carbon hybridized boron nitride and adding a modifier for modification. According to the cool master batch, boron nitride is hybridized by adopting a small amount of carbon materials such as graphene and carbon nanotubes, so that the heat conductivity of the boron nitride material is improved, and meanwhile, the absorption of visible light, near-infrared rays and even ultraviolet rays by the graphene and the carbon nanotubes is eliminated, namely, the light absorption and heating effects are achieved; meanwhile, graphene and a carbon nano tube layer are inserted into boron nitride through ultrasonic hybridization, and then grinding is performed until the particle size is proper, so that compared with a processing mode of directly adding a dispersing agent, the boron nitride has a better dispersing effect and a more perfect heat-conducting network, and the dispersing effect of the cooling agent in the cooling master batch and the fiber is greatly improved.

The invention relates to the technical field of polyester fibers, in particular to a high-strength wear-resistant polyester fiber and a preparation method thereof. The invention aims to solve the problem that the mechanical strength and wear resistance of the existing polyester fiber are difficult to consider at the same time. The preparation method comprises the following steps: carrying out esterification and polycondensation on terephthalic acid, ethylene glycol, hydroxyl-terminated polydimethylsiloxane and isophthalic acid to obtain modified PET; the preparation method comprises the following steps: respectively carrying out oxidation treatment on graphene and a multi-walled carbon nanotube, and then adding polyether amine for grafting; carrying out melt blending with PET slices to obtain nano master batches; carrying out melt blending on the chopped glass fibers and the PET slices to prepare micron master batches; and mixing the modified PET, the nano master batch and the micron master batch, carrying out ultrasonic dispersion, adding an auxiliary agent, and carrying out melt spinning, three-section stretching and three-section heat setting treatment to obtain the high-strength wear-resistant polyester fiber. Through the synergistic effect of the components and the process, the prepared fiber has excellent mechanical properties and wear resistance, and has wide application prospects in the fields of clothing, home textiles, industry and the like.

The invention relates to the field of textile materials, and particularly discloses a graphene enhanced polyester yarn and a preparation method thereof.The preparation method comprises the following steps that silicon dioxide aerogel serves as a porous carrier to be loaded with graphene, and a graphene-porous carrier composite material is prepared; the graphene-porous carrier composite material is subjected to modification treatment through vinyl trimethoxy silane and 3-amino propyl triethoxy silane, and then a modified graphene composite material is prepared; reacting the modified graphene composite material, a styrene monomer, an acrylate monomer and an initiator to prepare modified graphene; mixing the prepared modified graphene with polyester chips, and then carrying out melt spinning to prepare graphene enhanced polyester yarns; the invention further discloses the graphene enhanced polyester yarn prepared by adopting the preparation method. The preparation method has the characteristics that the dispersion of the graphene in the polyester is improved, and the direct interface compatibility of the graphene and the polyester fiber is improved, so that the mechanical property of the polyester yarn is improved.

The invention relates to the field of textile materials, and provides an antibacterial breathable yarn obtained by blended spinning of polyester fibers, polyamide fibers, cotton fibers and elastic fibers. The polyester fiber is prepared through melt blending and spinning processes and comprises polyethylene glycol terephthalate slices, modified chitosan zinc oxide, an antioxidant 1010, a POE elastomer, polyether modified silicone oil and polyethylene glycol 200, and the modified chitosan zinc oxide is prepared by compounding chitosan cinnamyl aldehyde Schiff base and silane modified zinc oxide. The chitosan cinnamyl aldehyde Schiff base is prepared through a Schiff base condensation reaction of chitosan and cinnamyl aldehyde, and the silane modified zinc oxide is prepared from nano rod-shaped zinc oxide particles modified by isocyanate propyl triethoxy silane. The yarn has excellent antibacterial property, air permeability and flexibility and is further used for knitting antibacterial breathable socks, the knitting density of the sock bottom part is reduced to enhance the air permeability, the knitting density of the sock opening part is improved to improve the elasticity and the fitting degree, and the yarn has wide application value.

The invention relates to the technical field of fibers, and discloses an ultrahigh-moisture-absorption anti-static polyester fiber and a preparation method thereof. The preparation method comprises the following steps: carrying out nucleophilic substitution reaction on 1, 2-benzisothiazolin-3-one and methacryloyl chloride to obtain modified benzisothiazolinone; the preparation method comprises the following steps: carrying out nucleophilic substitution reaction on phosphonitrilic chloride trimer and allylamine, and then carrying out nucleophilic substitution reaction on the phosphonitrilic chloride trimer and melamine again to obtain modified cyclophosphazene; the preparation method comprises the following steps: mixing gamma-methacryloxypropyltrimethoxysilane with aluminum zinc oxide for reaction, and mixing the obtained modified aluminum zinc oxide with modified benzisothiazolinone and modified cyclophosphazene for copolymerization in the presence of an initiator to obtain a flame-retardant antibacterial additive; mixing the flame-retardant antibacterial additive, calcium carbonate and polyethylene glycol terephthalate, performing melt spinning, and performing acid treatment to obtain modified polyester fibers; dipping the modified polyester fiber in a finishing liquid containing modified chitosan to obtain the ultrahigh-moisture-absorption anti-static polyester fiber.

The invention relates to the technical field of layered composite fabrics, in particular to an antibacterial breathable bio-based composite fabric and a preparation method thereof. The composite fabric comprises a two-layer structure of an inner-layer fabric and an outer-layer fabric, the inner-layer fabric is prepared from a bio-based material polylactic acid, the outer-layer fabric is prepared from bio-based materials polyamide fibers and polyester fibers, the polylactic acid is subjected to modification treatment, graphene oxide is introduced, quaternary ammonium salt is generated, the composite fabric has excellent antibacterial performance, and the antibacterial performance of the composite fabric is improved. The preparation method of the antibacterial modified polylactic acid comprises the following steps: reacting graphene oxide with 1-dimethoxy (methyl) silicon methyl isocyanate to prepare isocyanate-based graphene oxide; reacting the isocyanate-based graphene oxide with polylactic acid to prepare graphene oxide modified polylactic acid; reacting the graphene oxide modified polylactic acid with epoxidized soybean oil and amino modified graphene oxide to prepare modified polylactic acid; and carrying out quaternization reaction on the modified polylactic acid and bromoethanol to generate the antibacterial modified polylactic acid.

The invention relates to the technical field of high-performance polyester, in particular to a high-strength low-shrinkage polyester fiber and a preparation method thereof. The defects that existing polyester fibers are poor in strength and shrinkage resistance are overcome. The preparation method comprises the following steps: mixing the modified resin, the modified nano silicon dioxide, the composite antioxidant, the composite nucleating agent and the composite lubricant, and carrying out melt spinning. Wherein the modified resin is prepared from the following raw materials: dimethyl terephthalate, isophthalic acid, ethylene glycol and isosorbide; the modified nano silicon dioxide comprises nano silicon dioxide, KH570 and silver nitrate; the composite antioxidant comprises an antioxidant 1010, an antioxidant 168 and an antioxidant 1222; the composite nucleating agent comprises sodium benzoate and nano montmorillonite; the composite lubricant is prepared from ethylene bis stearamide and pentaerythritol stearate. The prepared polyester fiber is high in strength, high in shrinkage resistance and suitable for manufacturing of outdoor equipment.

A preparation method for a flame-retardant and anti-dripping polyester fiber. A flame-retardant and anti-dripping polyester fiber is obtained by mixing polyester, a flame-retardant polyester masterbatch (A or B) and an anti-dripping agent in the mass ratio of 65-75:15-25:2-20 and then performing melt spinning; the preparation process of the flame-retardant polyester masterbatch A comprises: in the polyester preparation process, adding a phosphorus-based flame retardant into a system in an esterification stage, and adding a nitrogen-based flame retardant and a silicon-based flame retardant into the system in a polycondensation stage to obtain the flame-retardant polyester masterbatch A; and the preparation process of the flame-retardant polyester masterbatch B comprises: carrying out melt blending on polyester and IFR to obtain the flame-retardant polyester masterbatch B. The flame-retardant and anti-dripping polyester fiber prepared by means of the technical solution has good flame retardance, anti-dripping properties and spinnability, and a fiber product prepared from a fiber having a special-shaped cross section also has good comfort.

A moisture-absorbing and sweat-releasing polyester fiber and a preparation method therefor. A three-stage side-blown cooling process is used for cooling in the method, wherein in the first stage, the air speed is 0.45-0.60 m / s, and the cooling length is 10-40 cm; in the second stage, the air speed is 0.60-0.75 m / s, and the cooling length is 40-50 cm; and in the third stage, the air speed is 0.75-0.90 m / s, and the cooling length is 50-120 cm. The moisture-absorbing and sweat-releasing polyester fiber has a fineness of 500-965 dtex, a breaking strength of greater than or equal to 2.0 cN / dtex, a coefficient of variation (CV) of the breaking strength of less than or equal to 4.0%, an elongation at break of 128±3.0%, a CV of the elongation at break of less than or equal to 4.0%, a CV of yarn unevenness of less than or equal to 1.80%, and a degree of profile of greater than or equal to 44%. The method realizes uniform cooling, and the prepared moisture-absorbing and sweat-releasing polyester fiber has good quality.

The invention relates to the field of functional fabrics, and provides a flame-retardant fabric with infrared shielding performance and a preparation method thereof, and the fabric is prepared from blended yarns of polyester composite fibers and surface modified polyimide composite fibers through a textile process. The polyester composite fiber comprises magnesium hydroxide / zinc oxide composite filler and is prepared through melt blending and spinning, and the surface modified polyimide composite fiber is obtained through basic zinc carbonate surface modification treatment. Zinc oxide particles and magnesium hydroxide nanowires in the magnesium hydroxide / zinc oxide composite filler have a synergistic effect, so that the flame retardance and the infrared shielding capability of the fiber are enhanced; the use of the surface modified graphene improves the mechanical and thermal stability of the polyimide fiber. By reasonably regulating and controlling the fiber proportion and weaving density, the fabric has excellent mechanical property, infrared shielding property and flame retardant property while ensuring the flexibility, and has wide application value.

The invention relates to a production process of a high-elasticity heat-resistant polyester yarn, which comprises the following steps: firstly, selecting high-molecular-weight polyethylene glycol terephthalate, adding 1-3% of nano filler and 5-10% of functional copolymer, and drying at 150 DEG C for 4-6 hours to improve the stability and processability of the material; secondly, melt extrusion is conducted at 280-290 DEG C, spinning is conducted through a multi-section temperature control spinning head, and the fiber cooling uniformity is effectively controlled. Then, two times of drafting and a heat setting process are adopted, the orientation degree of a molecular chain is improved in one time of drafting, and low-temperature plasma treatment is combined to optimize the surface activity and the setting effect of the fibers. In the secondary drafting, the fiber deformation is finely adjusted at low temperature, the thermal damage is reduced, the elasticity is improved, and finally, xylanase treatment and ultraviolet curing are combined, so that the softness, the skin-friendly property and the weather resistance of the fiber are remarkably improved.

The invention discloses a preparation method of antibacterial fibers and a fabric, and relates to the technical field of textile fabrics. When the antibacterial fiber is prepared, 1, 6-hexanediol, 2-(bromomethyl) diethyl succinate and diethyl 2, 2 ': 6', 2 '-terpyridine-4'-yl phosphonate are polymerized to prepare polyester; the preparation method comprises the following steps: reacting polyester with 7-(dimethylamino) coumarin to prepare modified polyester; the preparation method comprises the following steps: polymerizing maleic anhydride and methyl-vinyl polysiloxane and coating the surface of a phase change microcapsule with the maleic anhydride and the methyl-vinyl polysiloxane to prepare a pre-modified phase change microcapsule; the pre-modified phase change microcapsule and 1-hydroxymethyl-5, 5-dimethyl hydantoin are subjected to a reaction, and a modified phase change microcapsule is prepared; preparing a spinning solution from the modified polyester, the modified phase change microcapsules and copper chloride, performing electrostatic spinning, and performing chlorination finishing to obtain the antibacterial fiber. The antibacterial fiber prepared by the invention has excellent antibacterial, anti-aging, flame-retardant and mechanical properties.

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 belongs to the technical field of flame-retardant fibers, and discloses a colored flame-retardant master batch and a preparation method of colored flame-retardant fibers.The preparation method of the colored flame-retardant master batch comprises the steps that a flame retardant PDI-MA and a polyester chip powder matrix are blended, extruded and granulated, and the colored flame-retardant master batch is prepared; the preparation method of the colored flame-retardant fiber comprises the following steps: blending the prepared colored flame-retardant master batch and polyester chips, and carrying out melt spinning to obtain the colored flame-retardant polyester fiber. The pigment and the flame retardant in the flame retardant PDI-MA prepared by the invention are carriers for each other, and the advantages of MA and PTCDA are combined, so that the colored flame-retardant polyester fiber prepared from the flame retardant PDI-MA has colored and flame-retardant properties, and the overall flame retardance is improved synergistically.

The invention discloses a low-strength polyester fully-drawn yarn and a preparation method and application thereof.The preparation method comprises the steps that a polyester melt is sprayed out of a yarn strip through a spinneret orifice with a flat cross section, the yarn strip is cooled and oiled, then the yarn strip makes frictional contact with a brittle damage part with a rough surface layer, the yarn strip enters a pre-interlacer to be treated, drawn and shaped, and the low-strength polyester fully-drawn yarn is obtained. The main network is interlaced; wherein the surface roughness Ra of the rough surface layer is 0.5-1.5, filaments located between the brittle damage part and the pre-interlacing device enter the pre-interlacing device at an included angle alpha, the acute included angle between the filaments entering the pre-interlacing device and the perpendicular normal of the end face, where the filaments enter, of the pre-interlacing device is the included angle alpha, and the included angle alpha is 10-30 degrees; according to the method, the ideal brittle damage effect of the polyester filaments can be achieved without being subjected to multiple treatments such as a high-temperature environment, strong alkali and alcohol, the energy consumption and the cost are low, and the prepared cloth has low tearing strength and is suitable for preparing medical adhesive tape, wiring harness adhesive tape or trademark cloth.

The preparation method of the antibacterial polyester fiber comprises the following steps: firstly, reacting a cationic antibacterial agent with a terminal carboxyl group with 4-sulfobenzoic acid monopotassium salt to obtain a high-temperature-resistant polymerizable cationic antibacterial agent; then taking purified terephthalic acid, a high-temperature-resistant polymerizable cationic antibacterial agent and ethylene glycol as raw materials, adding an auxiliary agent trimethyl phosphate and a catalyst to prepare uniform slurry, and adding the uniform slurry into an esterification reaction kettle; entering a polycondensation stage after esterification is finished, filling nitrogen after reaction is finished, pressurizing, discharging, and performing underwater granulation to obtain antibacterial polyester chips; then, the antibacterial polyester chips are dried until the water content is lower than 30 ppm, and the antibacterial polyester fibers are obtained through the melt extrusion spinning step; the fiber strength of the prepared antibacterial polyester fiber is larger than or equal to 2.8 cN / dtex, the antibacterial rate meets the AAA grade standard, and the antibacterial polyester fiber has good strength and is wide in application range.

The present invention relates to a graphene-modified multifunctional polyester fiber and a preparation method and an application in down filling, belonging to the technical field of down filling. The preparation method of the present invention comprises the following steps: S1, under the action of an acid binding agent, trimethylolethane and phosphorus oxychloride are reacted in a solvent in the first stage, and then graphene oxide is added for the second stage reaction to obtain modified graphene oxide; S2, the modified graphene oxide and polyester powder are granulated to obtain a multifunctional polyester masterbatch; S3, the multifunctional polyester masterbatch and polyester slices are spun to obtain a graphene-modified multifunctional polyester fiber. The far-infrared normal emissivity of the graphene-modified multifunctional polyester fiber is 0.89-0.92, the far-infrared radiation temperature rise is 2.3℃-3.1℃, the limiting oxygen index reaches 28.3%-29.0%, the antibacterial performance is higher than 99.9%, and the breaking strength is 3.2cN / detx-3.4cN / detx.

The present invention relates to the technical field of flame-retardant and antibacterial polyester fibers, and discloses a nano zinc oxide modified flame-retardant and antibacterial polyester fiber and a preparation method thereof, wherein the raw materials of the polyester fiber include: purified terephthalic acid, ethylene glycol, nano zinc oxide-cellulose nanocrystals, an antioxidant and a catalyst; the addition amount of the nano zinc oxide-cellulose nanocrystals accounts for 5000-10000ppm of the mass of the polyester fiber. The present invention uses cellulose nanocrystals to modify the surface of zinc oxide, which can not only promote the carbonization of cellulose nanocrystals during the combustion process, thereby improving the flame retardant properties, but also improve the dispersibility and reinforcing effect in the polyester fiber, thereby making the fiber spinnable, and the polyester fiber can maintain good mechanical properties and hue while improving the flame retardant and antibacterial properties, thereby ultimately improving product quality and reducing costs.

The invention discloses an environment-friendly flame-retardant polyester yarn and a preparation method thereof, and relates to the technical field of textile, and the environment-friendly flame-retardant polyester yarn is prepared from the following raw materials in parts by weight: 100 parts of polyester chips, 10-15 parts of a flame-retardant polymer containing an organic salt structure, 1-3 parts of an antioxidant, 0.8-2 parts of a lubricant, 1-2 parts of benzotriazole sodium and 0.8-1.2 parts of quinoline yellow. The flame-retardant polymer containing the organic salt structure comprises a structural unit introduced by the following monomers: bis (3-aminophenyl) (3, 5-bis (trifluoromethyl) phenyl) phosphine oxide, 3, 7-diamino-5-phenylphenazine chloride and 3, 5-isoxazole dicarboxylic acid. The environment-friendly flame-retardant polyester yarn is good in ultraviolet aging resistance and flame retardance, high in strength and sufficient in softness.

The invention discloses a warm-keeping fabric containing hollow polyester fibers as well as a preparation method and application thereof, and relates to the field of fabrics. When the thermal fabric containing the hollow polyester fibers is prepared, hollow mesoporous nano cerium oxide is selectively protected by molten paraffin and then reacts with chloromethyl trimethoxy silane and isocyanuric acid in sequence, paraffin is dissolved by chloroform, and then N-(3-trimethoxysilylpropyl) pyrrole is grafted to obtain modified hollow mesoporous nano cerium oxide; reacting terephthalic acid, a multifunctional monomer and ethylene glycol to obtain modified polyester particles; the preparation method comprises the following steps: granulating modified polyester, uniformly mixing modified hollow mesoporous nano cerium oxide and polyethylene glycol 10000, performing melt spinning, treating with a pyrrole solution, twisting, spinning and weaving, and treating with a sodium hypochlorite mixed solution to obtain the thermal fabric containing the hollow polyester fibers. The warm-keeping fabric containing the hollow polyester fibers prepared by the invention has excellent warm-keeping, antibacterial, anti-aging, flame-retardant, antistatic and mechanical properties.

The invention belongs to the technical field of biomedical textile materials, and relates to a multi-level artificial dura mater repair scaffold and a preparation method thereof.The main body structure of the repair scaffold is three layers of nanofiber membranes deposited layer by layer and crosslinked through glutaraldehyde, the inner layer is a coaxial nanofiber membrane loaded with minocycline and insulin-like growth factor-1, and the outer layer is a coaxial nanofiber membrane loaded with glutaraldehyde. Wherein the insulin-like growth factor-1 is located in the core layer, and the minocycline is located in the shell layer; the middle layer is a polycaprolactone nanofiber membrane, and the outer layer is a polycaprolactone / hyaluronic acid nanofiber membrane; the inner layer can release minocycline and insulin-like growth factor-1 in a sequential manner, so that the inflammation environment after brain injury can be effectively regulated and controlled, and neural restoration can be promoted; and the outer layer shows an excellent anti-adhesion effect by inhibiting the adhesion and proliferation of fibroblasts, so that the hindrance on nerve regeneration caused by excessive formation of scar tissues is effectively avoided. The middle layer obviously enhances the ability of the stent to prevent leakage of cerebrospinal fluid; and the structural design is exquisite, the preparation method is simple and convenient, and wide market prospects and profound social values are achieved.

The invention relates to the technical field of soft cotton fabrics, in particular to a high-breathability soft cotton fabric and a preparation method thereof.The preparation method includes the following steps that firstly, spandex filaments serve as core yarns, the core yarns are wrapped with modified polyester yarns to be spun into spandex wrap yarns, the ratio of the spandex filaments to the modified polyester yarns is 2: 2.5, and the linear density of the spandex filaments is 20 D; and the linear density of the modified polyester yarns is 50D. According to the soft cotton fabric, the spandex filaments serve as the core wires, the spandex filaments are subjected to coating improvement through the modified polyester yarn, the 100D / 144F imitated cotton yarn is matched for warp and weft knitting, the obtained soft cotton fabric is improved in the air permeability, softness and elasticity in a coordinated and balanced mode, and the product is excellent in heat resistance, washing resistance and stability.

The invention discloses a process for preparing a polyester fiber fabric by regenerating polyester waste bottle flakes, belongs to the technical field of polyester fiber fabric processing, and aims to solve the technical problem that the moisture absorption and quick drying performance, friction resistance and pilling resistance of the polyester fiber fabric in the prior art need to be further improved. The method comprises the following steps: adding polyester waste bottle flakes into a pulverizer, pulverizing, sieving with a 60-mesh sieve to obtain polyester regenerated powder, and pretreating the polyester regenerated powder to obtain pretreated polyester powder; composite polyester is prepared from modified polysiloxane enhanced copolyester containing nylon 6 and polyvinyl alcohol blocks, and then the porous composite polyester fiber is prepared by taking polyvinyl alcohol as a pore forming agent, so that the moisture absorption and quick drying performance of the polyester fiber fabric is effectively improved, the wearing experience of the polyester fiber fabric is enhanced, and the service life of the polyester fiber fabric is prolonged. The wear-resistant and anti-pilling performance of the polyester fiber fabric is also improved.

The invention discloses a method for preparing a polyester fabric through cyclic regeneration of waste polyester textiles, belongs to the technical field of polyester recovery, and is used for solving the technical problem that the mechanical property and antibacterial ability of a regenerated polyester fabric in the prior art need to be further improved. The method comprises the following steps: adding the waste polyester textile and modified multilayer graphene into a high-pressure reaction kettle, carrying out carbon dioxide supercritical depolymerization to obtain a depolymerized mixed solution, preparing the modified multilayer graphene, slowly releasing supercritical fluid by virtue of an abundant gap structure, and preparing the modified multilayer graphene into the high-pressure reaction kettle. According to the preparation method, modified multilayer graphene is modified, the depolymerization effect is improved, meanwhile, rich active functional groups on the surface provide in-situ polymerization sites for a depolymerization monomer, the depolymerization monomer serves as a polymerization hub structure to provide support for an organic chain segment, a space structure is hybridized through a chain extender, finally, the flame-retardant antibacterial liquid is prepared, effective components of the flame-retardant antibacterial liquid are cross-linked with the modified multilayer graphene, and the flame-retardant antibacterial performance is improved. In the combustion process, the chain extender is promoted to be carbonized, and the regenerated polyester fabric which is flame-retardant, antibacterial and excellent in mechanical property is obtained.

The invention discloses a flame-retardant antistatic wear-resistant fabric and a preparation method thereof, and relates to the field of fabrics. When the flame-retardant antistatic wear-resistant fabric is prepared, nano titanium dioxide is subjected to a reaction with 3-aminopropyltrimethoxysilane, 2, 5-dihydroxy terephthalaldehyde and 1-aminopyrrole in sequence, and modified nano titanium dioxide is prepared; reacting the ester mixed solution with the alcohol mixed solution, and then reacting with 1-allyl-1H-pyrrole to obtain modified polyester; reacting the modified polyester, the modified nano titanium dioxide and a pyrrole mixed solution, spinning, and weaving to obtain the flame-retardant antistatic wear-resistant fabric. The flame-retardant antistatic wear-resistant fabric prepared by the invention has excellent flame-retardant, antistatic, wear-resistant, antibacterial and anti-aging effects.

To provide a recycled polyester resin that can be used to produce polyester products in various forms, using recycled polyester raw materials derived from used polyester products or recycled polyester raw materials derived from scraps generated in the process of producing polyester resins and products. [Solution] This is a polyester resin containing components derived from at least one recycled polyester raw material, i.e., a) used polyester products and b) unused polyester resin generated in the process of manufacturing polyester products, characterized in that (1) when the total amount of all glycol components is taken as 100 mol%, the diethylene glycol content is 4 mol% or less, (2) the carboxyl terminal group concentration is 30 equivalents / t or less, and (3) the average pressure increase rate is 0.6 MPa / h or less.

The invention provides a multifunctional passive cooling optical metamaterial fiber, yarn and fabric and a preparation method thereof. The passive cooling optical metamaterial fiber is composed of high-refractive-index inorganic micro-nano particles and / or a micro-nano functional material and a polymer substrate material. Wherein wavelength / sub-wavelength scale micro-nano particles are uniformly distributed in a substrate material as a random scattering medium to form a random optical metamaterial system, and reflection enhancement of the optical metamaterial fabric in a solar spectrum band is realized by utilizing a multiple Mie resonance collective effect. According to the passive cooling optical metamaterial fiber, a circular structure, a skin-core structure and the like are prepared through melt spinning, high-refractive-index inorganic micro-nano particles are added into a skin layer and used for sunlight band wide spectrum regulation and control, and a micro-nano functional material is added into a core layer, so that multiple functions are effectively achieved.