448 results about "Silk fiber" patented technology

The invention relates to the technical field of non-woven fabrics, in particular to a production process of a functional fiber woven non-woven fabric body, the non-woven fabric body comprises a non-woven fabric base body, middle layers are arranged on the upper portion and the lower portion of the non-woven fabric base body, and outer layer bodies are arranged on the outer sides of the middle layers; the middle layer is compounded with the upper part and the lower part of the non-woven fabric base body through polyurethane glue, and the dosage of the polyurethane glue is 20g / m < 2 >; the non-woven fabric body is formed by mutually matching a non-woven fabric base body, a middle layer and an outer layer body, the non-woven fabric base body is formed by weaving first modified spandex fibers and polyester fibers, the middle layer is formed by interweaving second modified polyester fibers and hemp fibers, and the outer layer body is formed by spraying an outer layer agent. The product is excellent in wear resistance, stain resistance, heat preservation and breaking strength, remarkable in comprehensive coordination effect and excellent in washing resistance and ultraviolet stability resistance.

The invention relates to the technical field of high-performance polyester fibers, and discloses a dry skin-friendly fiber fabric, a preparation method thereof and application of the dry skin-friendly fiber fabric in underwear. The preparation method of the dry and comfortable skin-friendly fiber fabric comprises the following steps: carrying out reaction on terephthalic acid, ethylene glycol and an antibacterial modified diamide diol monomer to obtain modified polyester; the modified polyester and the polyester master batch are mixed and spun, and the modified profiled polyester fiber is obtained; dipping the modified profiled polyester fiber in a finishing liquid containing a biopolymer finishing agent to obtain the high-performance polyester fiber, blending and knitting high-performance polyester fibers, cotton fibers and mulberry silk fibers to obtain a dry skin-friendly fiber fabric; the dry and comfortable skin-friendly fiber fabric has excellent antibacterial performance, moisture absorption performance and skin-friendly performance, the skin can be kept dry and comfortable, safe and comfortable wearing experience is provided for a wearer, and the dry and comfortable skin-friendly fiber fabric can be used for underwear and other underwear materials.

The invention relates to a dry-jet wet-spinning ultra-high-performance polyacrylonitrile-based carbon fiber and a preparation method thereof, and belongs to the technical field of carbon fibers. A preparation method of dry-jet wet-spinning ultra-high-performance polyacrylonitrile-based carbon fiber comprises the following steps: S1, mixing acrylonitrile, a comonomer, a chain transfer agent, an initiator and a solvent, carrying out polymerization reaction through a solvent dropwise addition method, and preparing a spinning solution; wherein the comonomers comprise a first comonomer, a second comonomer and a third comonomer; s2, the spinning solution is subjected to solidification, water washing, water drawing, oiling, drying and steam drawing, and precursor fibers are obtained; s3, the precursor fiber is sequentially subjected to pre-oxidation, low-temperature carbonization, high-temperature carbonization, graphitization, surface treatment, sizing and drying, and the ultra-high-performance polyacrylonitrile-based carbon fiber is prepared. Wherein the pre-oxidation adopts four-stage pre-oxidation treatment. The strength and modulus of the carbon fiber can be effectively and synergistically optimized, and the carbon fiber with high strength and high modulus is prepared.

Product use by means of the invention for dyeing and coloring or the like of substrates made of fibers, fiber cables, yarns made of cut and filament fibers, flat structures such as woven fabrics, knitted fabrics, warp-knitted fabrics, non-woven fabrics and ready-made clothing and home textiles and the like, in particular of textiles with 100% or with mixtures thereof. These can be made of plant and animal natural fibers, stem fibers, synthetic fibers of petrochemical or natural origin as well as special fibers such as soy fibers, milk fibers, bamboo fibers or fibers that are difficult to dye such as aramid, polypropylene.

The invention discloses a multifunctional coating with a compact-porous double-layer structure on the surface of magnesium alloy and a preparation method, and belongs to the technical field of biological materials. According to the multifunctional coating, magnesium alloy serves as a substrate, a compact layer and a porous layer are sequentially stacked from the substrate to the outside, and the compact layer is composed of two-dimensional transition metal carbide / nitride, calcium silicate nanowires and a positively charged polymer. The porous layer is composed of copper-containing complex / biopolymer composite fibers, mineralized silk fibers loaded with bioactive metal ions and astragalus polysaccharide on the surface, and natural polymers. According to the multifunctional coating with the compact-porous double-layer structure prepared on the surface of the magnesium alloy, the porous layer on the surface layer has a unique porous structure, growth and proliferation of osteoblasts can be well promoted, meanwhile, the multifunctional coating has the characteristics of pressure resistance, bacteria resistance and oxidation resistance, the compact layer on the bottom layer can improve the corrosion resistance of the magnesium alloy, and the service life of the magnesium alloy is prolonged. The coating is particularly suitable for surface coating of magnesium alloy implant materials and can be used in the field of medical instruments.

The application relates to a method for determining pre-oxidation process parameters of polyacrylonitrile-based carbon fibers, and belongs to the technical field of carbon fibers. The method for determining pre-oxidation process parameters of polyacrylonitrile-based carbon fibers comprises first-stage pre-oxidation, the first-stage pre-oxidation temperature is determined based on DSC of the original fiber, and the first-stage pre-oxidation time is determined based on a cyclization index of the fiber at the first-stage pre-oxidation temperature. More reasonable pre-oxidation parameters can be determined, and polyacrylonitrile-based carbon fibers with high strength and high modulus can be prepared.

The invention relates to an ultrahigh down-proof down jacket fabric and a preparation process thereof.The preparation process includes the steps that silk fibers, spinning auxiliaries and modified SiO2 precursor sol are evenly mixed in proportion to obtain spinnable sol, the spinnable sol is prepared into a modified SiO2 nanofiber membrane through an electrostatic spinning technology, and after the modified SiO2 nanofiber membrane is dried, an aerogel elastic membrane is obtained; the fabric is attached to base cloth, and the ultrahigh down-proof down jacket fabric is prepared; wherein the spinning auxiliary agent is at least one of a polyvinyl acetal solution and a poly (butylene succinate) solution. The prepared ultrahigh down-proof down jacket fabric has high air permeability and high down-proof performance, and is good in toughness, good in elasticity and washable, so that the high air permeability and the high down-proof performance of the fabric can be kept for a longer time.

The invention discloses a ground directional drilling goaf passing leaking stoppage method which comprises the steps that hole data of a goaf are obtained, and the hole data comprise the hole depth and the crack width; when the width of the crack is larger than 5 mm, a foundation plugging material is adopted for conducting foundation plugging on the hole of the goaf, and the foundation plugging material is an inert material and cement paste; judging whether basic plugging fails or not to obtain a first judgment result; if the first judgment result shows that the basic plugging fails, a flexible plugging material is adopted for conducting medium-term plugging on the holes in the goaf, and the flexible plugging material is a material formed by mixing hemp fiber, sawdust, soybeans and water. According to foundation plugging, a large channel is filled through particle bridging, a primary plugging layer is formed after cement paste is solidified, the flexible material can adapt to trace deformation of surrounding rock through deformation filling, and micro cracks of a foundation layer are plugged. Through graded gradient filling, the leaking stoppage effect can be greatly improved.

According to the filament non-woven fabric and the manufacturing equipment thereof, the filament non-woven fabric is a fiber net composed of curled filament fibers with a spiral structure, the curled filament fibers are composed of high-melting-point resin and low-melting-point resin, the melting point difference of the high-melting-point resin and the low-melting-point resin is at least 20 DEG C, and at least part of the surface layer of each curled filament fiber is the low-melting-point resin. The low-melting-point resins on the surface layers of the adjacent curled filament fibers are mutually fused and bonded together, and the fluctuation ratio of the air permeability at different positions on the filament non-woven fabric is not more than 10%. Due to the fact that the curled filament fiber net is conveyed to the conveying net curtain or other fiber nets along with rotation of the rotary net, the impact force generated when the curled filament fiber net directly falls to the conveying net curtain or the previous fiber net is reduced, and the defects that fibers at different positions of the formed filament non-woven fabric are not evenly distributed, and the uniformity of the net face is poor can be overcome. Therefore, the filament non-woven fabric is uniform in mesh surface and has good air permeability and fluffiness.

According to the different-shrinkage elastic composite filament DTY fiber and the elasticity enhancing processing method thereof, the semi-dull polyester POY, the T8 modified polyester POY and the modified polyester FDY are selected and combined, the processing path is optimized, and the prepared composite filament fiber has bulkiness, high elasticity and different-shrinkage effects. Through introduction of T8 modified polyester and processing of the T8 modified polyester in a low-temperature first hot box, untwisting and orientation are completed, and the high-elasticity and soft characteristics are stimulated. Meanwhile, the second hot box is closed, so that the two false-twisted POY filaments are naturally and slowly cooled and shaped in the closed channel, damage to a T8 polyester curling structure is avoided, the high shrinkage potential of the T8 polyester is reserved, and meanwhile energy conservation and consumption reduction are achieved. Besides, the FDY is introduced through an independent low-tension path, and is combined with the POY at an outlet through a bottom net technology, so that the strength loss of the FDY caused by excessive drafting or high-temperature treatment is avoided, and the mechanical property of a final product is guaranteed while a unique three-dimensional texture is formed.

The invention relates to the technical field of rail transit cables, in particular to a preparation method of a bending-resistant sensor cable for a high-speed motor train unit. The preparation method comprises the steps of conductor three-layer twisting and annealing, insulating layer gradient extrusion and plasma treatment, filling, twice wrapping, double-layer shielding, double-layer sheath co-extrusion and irradiation crosslinking post-treatment. The structure of the bending-resistant sensor cable sequentially comprises a high-elasticity fiber rope filler, a copper alloy conductor with a TPEE insulating layer, a thin flame-retardant cloth wrapping layer, an elastic silica gel inner shielding layer, a tinned copper wire and fiber filament outer shielding layer, a thin non-woven fabric wrapping layer and a cross-linked polyurethane double-layer sheath from inside to outside. The bending resistance of the cable exceeds 500,000 times, the cable works stably at the temperature of-50 DEG C to 125 DEG C, the service life is prolonged by 2-3 times, and the cable is suitable for the harsh environment of the high-speed motor train unit.

The application relates to the technical field of fabrics, and discloses an anti-wrinkle comfortable composite fabric containing superfine denier polyester fibers and a preparation method thereof. Cotton fibers treated with alkali are immersed into modified slurry containing quaternary ammonium salt modified graphene to obtain modified cotton fibers, silk fibers and protein fibers are respectively spun into yarns, and inner-layer fabric is woven, superfine denier polyester fibers and modified cotton fibers are respectively spun into yarns, outer-layer fabric is woven, and then the inner-layer fabric and the outer-layer fabric are fixed by sewing with polylactic acid fiber filaments to obtain the anti-wrinkle comfortable composite fabric containing superfine denier polyester fibers. The composite fabric has excellent wear resistance, mechanical properties and antibacterial properties, and has the characteristics of high elasticity, has good anti-wrinkle ability, and is not prone to deformation. The woven inner-layer fabric is soft and comfortable, and can meet various demands of people for garment fabrics.

The present invention discloses a boron-containing, high-temperature-resistant, near-stoichiometric silicon carbide fiber and a preparation method thereof. The preparation method includes a spinning stage, an infusibility stage, a pre-sintering stage, a densification sintering stage, and a nitriding stage, and is characterized in that: in the infusibility stage, the metal-doped polycarbosilane precursor fiber obtained in the spinning stage is subjected to a boron-doping reaction in an atmosphere containing boron trichloride and a cross-linking reaction in an atmosphere of a gaseous hydrocarbon having a carbon-carbon double bond. The method is simple to operate, has high production efficiency, low production cost, and is easy to use for large-scale industrial production. The prepared boron-containing, high-temperature-resistant, near-stoichiometric silicon carbide fiber has the advantages of low oxygen content, high degree of densification, few defects, stable structure, high tensile strength modulus, large grain size, and good high-temperature resistance, oxidation resistance, and creep resistance.

The invention relates to the technical field of fabrics, in particular to an integrated ultra-light running fabric and a preparation method thereof.The preparation method includes the following steps that superfine denier polyester fibers and tencel fibers are blended according to the mass ratio of (7-9): 2 to form composite yarns; the composite yarn is subjected to pre-improvement treatment, after improvement is finished, a composite yarn pre-improved body is obtained, the composite yarn pre-improved body serves as warp yarn, modified spandex serves as weft yarn, the warp yarn and the weft yarn are fed into a circular knitting machine according to the weight ratio of (8-10): 3 to be subjected to knitting weaving treatment, and after treatment is finished, the ultra-light running fabric is obtained. According to the integrated ultralight running fabric, superfine denier polyester fibers and tencel fibers are blended, the fabric is based on the blending of the superfine denier polyester fibers and the tencel fibers, the densities of warp yarns and weft yarns are as low as 9.8-10.0 tex and 8.5-9.0 tex respectively, the weight per unit area of the fabric is greatly reduced due to the design of the fine denier fibers and the low linear density, the ultralight characteristic is achieved, and the body load during running is reduced.

The invention provides a dyeable high-temperature-resistant modified meta-position aramid fiber and a preparation method thereof. The modified meta-aramid fiber is mainly prepared from a spinning solution prepared from m-phenylenediamine, methyl 3, 5-diaminobenzoate, 3, 3 '-diaminodiphenyl sulfone and an isophthaloyl dichloride copolymer through dry spinning, and the dye uptake of a disperse dye is not lower than 85%; the thermal decomposition temperature is not less than 400 DEG C. The preparation method comprises the following steps. S1, fully continuous polymerization; s2, continuously neutralizing and conveying; s3, direct spinning; and S4, fiber forming and post-treatment. The method has the advantages that (1) the quality difference between batches in the traditional intermittent method is eliminated, and the uniformity and stability of the product performance are realized; and the preparation process is compact, the production efficiency is high and the energy consumption is low. And (2) the dyeing performance of the prepared fiber is obviously improved, the inherent high-temperature-resistant characteristic of the aramid fiber is maintained, and the mechanical property is excellent. And (3) the application range of the meta-position aramid fiber is expanded.

The invention discloses a wear-resistant and fibrillating-resistant spun silk fiber and a preparation process and application thereof, a layer of smooth and continuous amino acid-containing polymeric membrane protective layer with uniform thickness is formed on the surface of the spun silk fiber, the thickness of the polymeric membrane protective layer is 50-500nm, and the thickness of the polymeric membrane protective layer is 50-500nm. The polymeric membrane protective layer enables the spun silk fibers to be wear-resistant and anti-fibrillating, the spun silk fibers are not easy to damage after being treated by dyeing and after-finishing processes, and the prepared fabric can still keep good hand feeling and color after being washed for multiple times. Besides, the preparation process is simple, efficient and wide in applicability, and the prepared wear-resistant and fibrillating-resistant spun silk fiber can be used for spinning and weaving independently or together with other fibers and can be applied to the fields of clothes, underwear, home textiles, filling and the like.

The invention provides a multi-metal / carbon coated iron-chromium flow battery electrode material and a preparation method thereof, and belongs to the technical field of iron-chromium flow battery energy storage. The preparation method comprises the following steps: carrying out pre-oxidation treatment, carbonization treatment and graphitization treatment on a precursor fiber felt to obtain a graphite felt; the preparation method comprises the following steps: dipping a graphite felt in a potassium hydroxide solution, then drying and carrying out primary calcination treatment, dipping an activated felt in a metal salt solution, then drying and carrying out secondary calcination treatment, dipping a multi-metal loaded activated felt in a dopamine solution containing a conductive agent, then adding a buffer solution until the pH value of the solution is 8-10 so as to enable dopamine to be self-polymerized, and then carrying out tertiary calcination treatment so as to obtain the multi-metal loaded activated felt. The multi-metal / carbon coated iron-chromium flow battery electrode material is obtained. The multi-metal / carbon coated iron-chromium flow battery electrode material disclosed by the invention has high hydrophilicity, high hydrogen evolution overpotential, high specific surface area, high energy efficiency and long cycle stability.

The invention relates to the field of textiles, and particularly discloses antistatic and anti-pilling double-sided flannelette and a preparation process. The antistatic and anti-pilling double-sided flannelette is composed of warp yarns, weft yarns and a suede fiber layer, the warp yarns and the weft yarns adopt the same multi-fiber blended yarns and consist of the following fibers in percentage by weight: 50%-60% of modified polyester fibers, 12%-18% of modal fibers, 18%-22% of anti-pilling polyester fibers and 8%-12% of tencel fibers; the suede fiber layer is formed by short fibers through a fuzzing process and is composed of the following fibers in percentage by weight: 46%-55% of cationic polyester, 27%-32% of conductive acrylic fibers and 18%-22% of bamboo fibers. The antistatic and anti-pilling double-sided flannelette has the advantages of durability, excellent antistatic property, excellent anti-pilling property, softness and comfort.

The invention discloses a method for preparing a closed-pore-rich soft and hard carbon composite material from silk fibers and coal liquefied asphalt and sodium electricity application of the closed-pore-rich soft and hard carbon composite material, and belongs to the field of novel composite material preparation and electrochemical energy storage. The preparation method comprises the following steps: firstly, pre-carbonizing silk fibers to obtain pre-carbonized silk fibers; secondly, an open pore structure is constructed on the pre-carbonized silk fiber through chemical activation, and activated silk carbon fiber is obtained; thirdly, the surface of the activated silk carbon fiber is coated with coal liquefaction pitch through an impregnation method; and finally, co-carbonization is carried out to complete packaging of the open pores, and the composite material rich in the closed pore structure is obtained. The soft and hard carbon composite material disclosed by the invention has the characteristic of rich closed pores, and shows excellent specific capacity and low-voltage platform capacity; benefited from the core-shell synergistic effect of the inner-layer hard carbon and the outer-layer soft carbon, the conductivity and the sodium ion diffusion efficiency of the material are improved, so that the rate capability and the cycling stability of the material are enhanced; in addition, soft carbon packaging is used for replacing traditional ultrahigh-temperature carbonization to construct a closed-pore structure, and the preparation process is safe, controllable and energy-saving.

The invention belongs to the technical field of textile fabrics, and particularly relates to an anti-pilling wool tencel fabric and a preparation method thereof. The anti-pilling wool tencel fabric comprises a core layer fiber raw material, a sheath layer fiber raw material, a composite bio-enzyme finishing liquid and a composite cross-linking finishing liquid, wherein the fiber raw materials of the core layer comprise 40-60 parts of wool fibers, 30-50 parts of tencel fibers and 5-15 parts of polyester fibers with special-shaped sections; the fiber raw materials of the sheath layer comprise 20-40 parts of wool fibers and 50-80 parts of tencel fibers; according to the invention, wool fibers which are easy to pilling are isolated through the core-sheath structure, and migration and slip-out of the fibers are reduced through the supporting effect of the internal skeleton; in the finishing process, a composite bio-enzyme and composite cross-linking synergistic effect is adopted, the washing step after enzyme treatment is omitted, the ideal surface state of the fibers is reserved to strengthen the cross-linking effect, uniform and compact combination is ensured in cooperation with a microwave curing technology, and long-acting anti-pilling protection is formed.

The application discloses a side leakage prevention adult paper diaper and belongs to the field of nursing supplies. The side leakage prevention adult paper diaper comprises a surface layer, an absorption layer and a bottom layer which are sequentially arranged, and double-layer three-dimensional guards are arranged on the two sides of the surface layer. The double-layer three-dimensional guards comprise a first guard and a second guard, and the second guard is arranged on the outer side of the first guard. The first guard is formed by hot adhesion of Tencel fiber and double-component fiber in a mass ratio of (0.9-1):(0.1-0.15), and the second guard is formed by hot adhesion of Tencel fiber and double-component fiber in a mass ratio of (0.9-1):(0.4-0.6). The application has the advantages of guaranteeing the side leakage prevention effect and improving the comfort.

The present invention relates to a thermoelectric and hygroelectric power generation material based on a metal-phase molybdenum disulfide double-layer conductive fabric, a preparation method and an application thereof. Using metal-phase molybdenum disulfide as the base material, an ammonium ion intercalation hydrothermal method is used to in-situ grow a vertical array of 1T-phase molybdenum disulfide nanosheets on the surface of carbonized silk fibers to construct a p-type semiconductor, which provides abundant nano-channels for the efficient moisture absorption and flow of water, generating a high current density output; using a cotton fabric as the substrate, an n-type semiconductor is constructed by forming a 1T-phase molybdenum disulfide / titanium carbide van der Waals heterostructure on the surface of cotton fibers. The large specific surface area of the 1T-phase molybdenum disulfide / titanium carbide van der Waals heterostructure enables rapid electron migration. The present invention constructs a textile-based thermoelectric and hygroelectric generator through the orderly encapsulation of p-type 1T-phase molybdenum disulfide / carbonized silk, n-type 1T-phase molybdenum disulfide / titanium carbide-cotton fabric and aluminum electrodes, realizing the efficient collection and conversion of low-grade thermal energy and moisture energy, and can be applied to intelligent wearables, flexible sensing and energy conversion.

Spun fibers that include fungal biomass are disclosed, as are methods for making and using such spun fibers. In some embodiments, a fungal biomass-based fibrous material is formed by extruding a spun fiber starting mixture comprising the fungal biomass into a desired spatial configuration and subsequently treating the spun fiber starting mixture to form the fibrous material.

The invention relates to the field of tencel gauze, in particular to soft tencel gauze and a preparation method thereof.The preparation method comprises the following steps that S1, tencel fibers are opened and subjected to primary carding and lapping, and a tencel fiber net is obtained; s2, the tencel fiber net is carded for the second time, a rolled gauze element is added, the tencel fiber net evenly falls on the two sides of the gauze element, initial gauze is obtained, spunlace treatment is conducted on the initial gauze, and tencel gauze is obtained; and S3, soaking the tencel gauze in a softening agent for 20-30 minutes, washing with water, drying, and doffing to obtain the soft tencel gauze. The tencel gauze is soaked in the softening agent, so that molecules of the softening agent permeate into the fibers, the friction coefficient between the fibers is reduced, the softness of the tencel gauze is remarkably improved, and the prepared soft tencel gauze can be tightly attached to the facial contour when being applied to facial mask cloth, so that the facial mask cloth is not prone to falling off. And the multi-layer gauze structure can adsorb more essence.

An aerosol-generating article (10)(100)(1000) comprises: an aerosol-generating substrate (12)(112)(1004); a downstream element (42)(150)(1008) provided downstream of the aerosol-generating substrate (12)(112)(1004) and in axial alignment with the aerosol-generating substrate, the downstream element comprising a cellulosic filtration material. The fibrous material comprises a plurality of regenerated cellulose fibres selected from one or more of viscose fibres, modal fibres, Lyocell fibres and viscose rayon fibres; or a plurality of natural fibres selected from one or more of flax fibres, hemp fibres, jute fibres, kenaf fibres, ramie fibres, abaca fibres, phormium fibres, sisal fibres, coir fibres, cotton fibres, and kapok fibres. The cellulosic fibrous material further comprises an additive coating applied to the plurality of regenerated cellulose or natural fibres, the additive coating comprising at least 5 percent by weight of exogenous lignin on a dry weight basis.

The invention discloses a preparation method and application of a graphite / PDMS-based flexible spinning fiber sensor. Comprising the following steps: mixing graphite flakes and a PDMS liquid prepolymer, and carrying out ultrasonic stirring; adding a curing agent, continuing ultrasonic stirring uniformly, putting into a vacuum drying oven, standing and defoaming to obtain a spinning solution, putting into an injector, injecting the spinning solution into a coagulating bath through an injection pump to obtain a flexible spinning fiber, immersing into xylene, performing swelling treatment, and then drying; silver wire electrodes are pasted to the two ends of the flexible spinning fiber through conductive adhesive, the silver wire electrodes are wrapped with thermoplastic pipes, and the flexible fiber sensor is obtained; and carrying out cyclic stretching on the flexible fiber sensor by adopting an electronic fatigue testing machine, collecting the resistance in the cyclic stretching process, and stopping cyclic stretching after the resistance reaches a stable state, so as to obtain the graphite / PDMS-based flexible spinning fiber sensor. The sensor is large in sensing strain range and high in sensitivity.

The invention belongs to the field of interface structure characterization of a monofilament SiC fiber reinforced titanium / titanium aluminum-based composite material, and particularly relates to a quasi-in-situ measurement method for the thickness of an interface reaction layer of the monofilament SiC fiber reinforced titanium / titanium aluminum-based composite material. The monofilament SiC fiber reinforced titanium / titanium aluminum matrix composite is prepared by adopting a precursor wire method in combination with a hot pressing or hot isostatic pressing process, and an interface reaction layer can be formed on a fiber-matrix interface in the composite forming process of fibers and a titanium / titanium aluminum alloy matrix. And the thickness measurement positions and the number of measurement points of the composite material interface reaction layer in different states are specified, so that the accuracy and the consistency of measurement results are ensured. The method is suitable for measuring the thickness of the interface reaction layer of the monofilament SiC fiber reinforced titanium / titanium-aluminum-based composite material in a forming state and a heat treatment state, and a material data basis is provided for structural design and application of a monofilament SiC fiber reinforced titanium / titanium-aluminum-based composite material component.

The application belongs to the technical field of textile fabrics, and particularly relates to an anti-pilling wool tencel fabric and a preparation method thereof; wherein the anti-pilling wool tencel fabric comprises core layer fiber raw material, sheath layer fiber raw material, composite biological enzyme finishing liquid and composite crosslinking finishing liquid; wherein the core layer fiber raw material comprises 40-60 parts of wool fiber, 30-50 parts of tencel fiber and 5-15 parts of profiled cross-section polyester fiber; the sheath layer fiber raw material comprises 20-40 parts of wool fiber and 50-80 parts of tencel fiber; the application isolates the wool fiber prone to pilling through a core-sheath structure, and reduces the migration and sliding of the fiber through the supporting action of the internal skeleton; in the finishing process, the composite biological enzyme and the composite crosslinking are used in a synergistic action, the washing step after enzyme treatment is omitted, the ideal surface state of the fiber is retained to strengthen the crosslinking effect, the microwave curing technology is matched to ensure uniform and dense combination, and long-acting anti-pilling protection is formed.

The present application relates to a kind of production device and production method of draping silk fabric, mainly including the following steps: step one, silk fiber raw material is obtained by weaving grey cloth;Step two, the grey cloth obtained in step one is immersed in dip dyeing liquid to carry out ultrasonic dip dyeing, after ultrasonic dip dyeing, the grey cloth is washed and dried;Step three, the grey cloth treated in step two is first immersed in first soft finishing agent, then is subjected to traction stretching treatment, and is assisted by spraying second soft finishing agent while traction stretching;Step four, the grey cloth treated in step three is washed, dried to obtain the draping silk fabric, the fabric produced by the present application has excellent draping characteristics, better gloss, strong wash resistance, and has good application prospect.

This invention relates to a method for preparing polyacrylonitrile-based high-performance carbon fiber precursor, mainly addressing the problems of high fiber fineness CV value, low strength, and high strength CV value in existing carbon fiber precursors. This invention employs a wet spinning process, using curved rollers in the drying and densification stage. Simultaneously, at 350–450 kPa, the relationship between steam drawing tension and steam drawing ratio satisfies a linear relationship: y = Ax - 50.6 (400 ≤ A ≤ 800, 1 ≤ x ≤ 5). Wherein, y is the steam drawing tension, and x is the steam drawing ratio. The technical solution adopted in this invention effectively solves the problems of high fiber fineness CV value, low strength, and high strength CV value in carbon fiber precursors, and can be used in the industrial production of polyacrylonitrile-based high-performance carbon fiber precursors.