1513 results about "Textile technology" patented technology

The invention relates to the technical field of textiles, and discloses a cool and washable bio-based nylon 56 fabric and a preparation method thereof. The preparation method of the cool and washable bio-based nylon 56 fabric comprises the following steps: loading modified nano aluminum oxide on modified aluminum nitride microchips to obtain a composite cool material; nylon 56, an ethylene-methyl acrylate-glycidyl methacrylate terpolymer, polypentamethylene guanidine hydrochloride and a composite cool feeling material are subjected to blending extrusion and melt spinning, and then the bio-based nylon 56 fabric is woven. Mixing the composite modified boron nitride and ethanol to obtain finishing liquid; spraying the finishing liquid on one side of the bio-based nylon 56 fabric, and drying to obtain the cool washable bio-based nylon 56 fabric. The cool and washable bio-based nylon 56 fabric disclosed by the invention has excellent cool feeling, antibacterial property, washable property, moisture absorption property and unidirectional perspiration property.

The invention relates to the technical field of textile, in particular to a digital textile equipment management method based on big data, and the method comprises the following steps: 1, an equipment connection and data initialization stage: checking the data interface type of equipment in each link of a textile process, and connecting the data interface type to a workshop data collection network, establishing an electronic file for each device, setting initial data acquisition parameters, and carrying out pre-operation test and calibration on the devices; 2, a production process monitoring and data recording stage; according to the scheme, the equipment performance evaluation model is established by using a big data analysis technology, multiple factors such as energy consumption efficiency, a production stability index and an equipment failure rate trend are comprehensively considered, and the equipment performance is comprehensively and accurately evaluated, so that sudden equipment failures are effectively avoided, the risk of production interruption is reduced, and the production efficiency is improved. The overall management efficiency and the operation stability of the equipment are improved, the continuity of the production process is guaranteed, and the cost increase caused by equipment faults is reduced.

The invention belongs to the technical field of textile, and particularly relates to a clothing cloth rolling machine which comprises a machine body, a rotating roller and a motor, the rotating roller is sleeved with a rolling roller for rolling cloth, a fixing piece is arranged at the position, located at the rear end of the rotating roller, of the machine body, and a transmission chain connected with the fixing piece is arranged on the machine body. A first motor connected with the rotating roller is arranged at the fixing part at the tail end of the machine body, a moving part abutting against the cloth is arranged at the position, at the uppermost end of the winding roller, of the machine body, and the clamping part is attracted by the powerful magnet, so that the winding roller drives the cloth to roll to be attached to the clamping part. A second pushing piece on the clamping piece is pushed to be attached to a second limiting block and push the second limiting block to rotate, limiting of a blocking piece is omitted, the blocking piece is pushed by a second spring to seal a notch of the clamping piece, the winding roller is blocked, and the situation that the winding roller is disengaged and falls off is avoided; and secondly, the fixing piece continues to move and is staggered with the clamping piece, so that the limiting blocking condition is avoided, and the dismounting effect is achieved conveniently and rapidly.

The invention relates to the technical field of textiles, in particular to a wear-resistant antibacterial flax blended yarn and a preparation process thereof. The method specifically comprises the following steps: S1, after performing ultraviolet irradiation on cotton fibers, putting the cotton fibers into a wear-resistant antibacterial solution, and performing dipping and drying to obtain wear-resistant fibers; s2: (1) modifying chitosan by using 6-maleimidohexanoic acid, so as to obtain modified chitosan; (2) sequentially reacting polyethylene glycol adipate with isophorone diisocyanate, modified chitosan and sodium 2-mercaptoethanesulfonate, and finally emulsifying to obtain a fiber treating agent; s3, (1) performing opening mixing, cotton carding, drawing, roving, spinning and spooling on the linen fibers and the wear-resistant fibers in sequence to obtain a linen blended yarn crude product; and (2) soaking the flax blended yarn crude product into the fiber treating agent, padding and drying to obtain the wear-resistant antibacterial flax blended yarn.

The invention belongs to the technical field of textiles, and particularly discloses an antibacterial cool-feeling polyester fiber containing plant extracts, a textile and a preparation method of the antibacterial cool-feeling polyester fiber. The antibacterial cool-feeling polyester fiber containing the plant extract comprises polyester and composite functional cellulose aerogel, the composite functional cellulose aerogel comprises cellulose aerogel, aluminum nitride and the plant extract, the aluminum nitride and the plant extract are loaded on the cellulose aerogel, and the plant extract comprises polygonum cuspidatum extract. The polyester fiber has a good antibacterial cool feeling characteristic and can be widely applied to the fields of household articles, clothes and the like.

The invention discloses a multifunctional coating with flame retardance, bacteriostasis and electromagnetic shielding as well as preparation and application of the multifunctional coating, and belongs to the technical field of textiles. The preparation method comprises the following steps: firstly, preparing a flame-retardant solution by combining phosphorylated sodium alginate and MXene, and padding a fabric into the solution to obtain a fabric with a flame-retardant function; the preparation method comprises the following steps: preparing a flame-retardant solution, adsorbing zanthoxylum bungeanum essential oil by adopting mesoporous silica to prepare a bacteriostatic agent solution, mixing the flame-retardant solution, the bacteriostatic agent solution and polyvinylpyrrolidone to obtain a flame-retardant and bacteriostatic composite solution, and padding a fabric into the flame-retardant and bacteriostatic composite solution to obtain a fabric with flame-retardant and bacteriostatic functions; mXene solution is sprayed on the fabric with the flame-retardant and antibacterial functions to serve as an enhanced electromagnetic shielding layer, and the multifunctional fabric with the flame-retardant, antibacterial and electromagnetic shielding functions is prepared. The flame-retardant solution and the bacteriostatic agent solution are both made of bio-based materials, have the advantages of being low in price, environmentally friendly and degradable, and can also be used as coatings to be applied to multiple fields.

The invention belongs to the technical field of textile, and particularly relates to a doup structure, a loom with the doup structure, a fabric and a weaving method of the doup structure, the doup structure comprises an open arm part and a half heald which are mutually independent and can ascend and descend, the open arm part comprises a front base heald and a rear base heald, and the front base heald and the rear base heald are each provided with a movable part. The movable part is provided with a movable hole, the half heald is mounted between the front base heald and the rear base heald in a lifting manner through the movable hole, and the half heald comprises a heald head and a heald foot and is also provided with a heald eye. In the weaving process, the opening and closing of the heald eyes can be controlled through the movement of the front and rear base healds, more than two doup warps can penetrate through the heald eyes, and a shed into which weft yarns can be woven is formed by lifting a plurality of ground healds up and down, so that the doup warps in one doup group are used for weaving various texture lines; therefore, the woven fabric has more forms of tissue structures, and the layering sense of the fabric is enhanced.

The invention relates to the technical field of textile, in particular to a textile pattern generation style migration method. Comprising the following steps: adopting a textile pattern structure and style separation coding mechanism; introducing a pattern rule structure field PSF, and introducing a style representation mapping domain SFD to perform high-dimensional deconstruction on color distribution density and texture frequency response extraction; a joint orthogonal deembedding network is utilized to maximize the independence of the structure and the style in the submerged space; adopting style component reconfigurable mapping; further refining the style characteristics into five types of core components; an inductive weight bias function is introduced, so that the system understands aesthetic tendency to make migration strategy adjustment; constructing a structure constraint graph matching mechanism; keeping the similarity of the pattern structure field PSF in the submerged space; introducing a topology order-preserving loss function, and keeping the original topology continuity for the repetitive unit arrangement; deformation of the structure caused by style replacement is limited through a structure and style cooperative adjustment curve; and generating a network by adopting dynamic adaptation of a style migration pattern.

The invention provides a textile culture knowledge visual presentation method and system combined with virtual reality, and the method comprises the steps: firstly obtaining a target textile culture data set containing the textile technology, history and material attribute information, and constructing a three-dimensional textile model set containing a plurality of textile culture element three-dimensional models based on the target textile culture data set; dynamically matching the three-dimensional model with a corresponding textile culture data unit according to a preset rule to generate a virtual reality textile culture scene, then responding to an interaction operation instruction of a user in the scene, extracting interaction behaviors and semantic features, and finally adjusting three-dimensional model display parameters according to the interaction behaviors and the semantic features. And the updated virtual reality textile culture scene is rendered and output in real time, so that vivid and interactive display of textile culture knowledge is realized.

The invention belongs to the technical field of textile, and relates to an efficient antibacterial fabric for preparing underwear and a dyeing and finishing method and application thereof.The provided antibacterial fabric is weft-knitted bird eye double-faced knitted fabric and is composed of polyester, cotton and modal fibers, the surface density is 180 g / m, surface yarn of the antibacterial fabric is hollow polyester fibers with special-shaped sections, and the surface yarn of the antibacterial fabric is hollow polyester fibers with special-shaped sections. The lining yarn is formed by weaving dacron and blended yarn according to the proportion of 2: 1. According to the method, dyeing and finishing of the antibacterial fabric, fabric weaving and ergonomic sewing are combined, the fabric which has efficient antibacterial performance, good moisture permeability and ultraviolet-proof performance and high color fastness is obtained, and the prepared antibacterial clothes are high in quick-drying performance, comfortable to wear and high in environmental adaptability.

The utility model relates to the technical field of ramie spinning, in particular to a ramie net bundling device of a ramie spinning gilling drawing frame, which comprises a yarn guide assembly and two fixing seats, a collecting box is arranged in the middle of the top end of the yarn guide assembly, and the improved ramie net bundling device is arranged on the yarn guide assembly through matching of the collecting box, a fan and a scraper. When the ramie net bundling device is used, dust and cotton scraps on the surface of ramie are scraped and collected, pollution caused by scattering of the dust and the cotton scraps is avoided, the problem that manual cleaning of workers is needed due to scattering of the dust and the cotton scraps on the surface of the ramie is solved, the labor intensity of the workers is reduced, and the working efficiency is improved. According to the ramie net bundling device, the stability of ramie in the bundling process is greatly improved in the use process of the ramie net bundling device through cooperation of the wire guide wheel, the limiting block and the clamping pin, the problem that the ramie is prone to being knotted due to wire jumping in the conveying process is solved, and therefore the working efficiency in the ramie net bundling process is greatly improved; therefore, the ramie net bundling requirement of a ramie spinning gilling drawing frame is met.

The invention discloses a cleaning lubricant for textile machinery. The cleaning lubricant comprises the following components in percentage by weight: 6-14% of petroleum ether, 16-26% of solvent oil, 6-14% of alkane oil, 16-26% of 120 # solvent oil, 31-39% of butane gas and 1-9% of dimethyl silicone oil. The invention belongs to the technical field of textile, and particularly relates to a cleaning lubricant for textile machinery, which can clean greasy dirt and dirt on each movable part of a textile mill, a blowing workshop, a drawing workshop, a roving workshop and a spinning workshop. The cleaning lubricant has the technical effects of rust removal, lubrication, rust prevention, wear resistance and non-sticking to all movable parts during cleaning, and the lubricating period of the cleaning lubricant is long.

The invention relates to the technical field of textile, in particular to a textile fabric quality detection device and a method thereof.The textile fabric quality detection device comprises a test board, a top plate is arranged at the top of the test board, a fabric clamping assembly for clamping fabric is arranged above the top plate, the middle of the test board is concaved inwards to form a cavity, and a plurality of heat dissipation grooves are formed in the side face of the test board; a stretching device for driving the cloth clamping assembly to move is arranged between the test board and the top plate, and an abrasion mechanism for rubbing the cloth is further arranged on the top plate. Through cooperation of the stretching device, the transmission plate, the transmission arm, the motor, the main gear, the auxiliary gear, the torsional spring and other structures, cloth on the cloth clamping assembly is rapidly stretched in a reciprocating mode multiple times, the testing time is shortened, the influence of changes of external environment factors on cloth performance is reduced, the accuracy and reliability of testing data are improved, and the testing efficiency is improved. And the cost is greatly reduced.

The invention discloses a textile test color matching instrument, and relates to the technical field of textile, the textile test color matching instrument comprises a shell, a switching assembly is arranged in the shell close to the rear surface, an adjusting assembly is arranged in the shell, and a linkage assembly is arranged on the outer surface of one side of the shell; according to the color matching instrument for textile testing, in the process of detecting textiles through the color matching instrument, a stepping motor is started, a driving shaft is driven to rotate, meanwhile, an electromagnet is disconnected from an external power source, the driving shaft drives a plurality of illuminating lamps to rotate to the position which is concentric with a light hole, and the colors of the textiles are detected; the electromagnet is disconnected with an external power supply, the driven gear is driven to rotate, then the rotating shaft is driven to rotate, the prism body is adjusted to a required angle, the prism body is indirectly driven to rotate by using the stepping motor, and the two independent power sources are combined into one power source.

The invention relates to the technical field of textiles, and discloses a mink cashmere imitation fabric and a preparation method thereof. The method comprises the following steps: (1) material selection: selecting 75D / 48F FDY semi-dull polyester as a raw material for GB1 and GB5, selecting 75D / 144F DTY semi-dull polyester as a raw material for GB2 and GB4, and selecting 68D / 72F FDY super-dull polyester as a raw material for GB3; (2) weaving: weaving the raw materials in the step (1) to obtain blank cloth with a three-layer structure; (3) slitting: slitting the blank cloth from the middle by a slitting machine to obtain a white blank with single-sided plush; and (4) after-finishing: sequentially carrying out the following operations on the white body: high-temperature setting, pre-lustring, hot blowing, carding and lustring to obtain the mink cashmere imitating fabric. The finished product imitation mink velvet fabric prepared by the method provided by the invention is fluffy, soft, fine, smooth, flat and firm in hair surface, and superior in quality.

The invention belongs to the technical field of textile, and discloses a reinforcement learning and physical modeling combined broken end dynamic capturing method and system. The method comprises the following steps: constructing a yarn microstructure evolution model; inputting real-time environment parameters of the textile workshop into the microstructure evolution model, and predicting to obtain real-time microstructure parameters of the yarn; performing nonlinear coupling feature extraction on the real-time environment parameters, and calculating an environment coupling feature vector; inputting the real-time microstructure parameters as material attributes into a yarn tension dynamical equation, and solving to obtain a predicted yarn macroscopic stress state; splicing the macroscopic stress state of the yarn and the environment coupling feature vector to form a state observation value; the reinforcement learning agent outputs a broken end risk probability value according to the state observation value; and when the broken end risk probability value exceeds a preset threshold value, generating and outputting a broken end early warning signal. According to the invention, early and accurate early warning of yarn breakage in a complex dynamic environment can be realized.

The invention discloses an anti-wrinkle wear-resistant flax blended yarn and a processing technology thereof, and relates to the technical field of textiles. The prepared flax blended yarn comprises natural fibers, modified polylactic acid fibers and ultra-high molecular weight polyethylene fibers. Wherein the natural fibers are obtained by performing degumming pretreatment on linen fibers and bamboo fibers and then mixing the linen fibers and the bamboo fibers with cotton fibers; graphene oxide is deposited on the surface of the fiber through dopamine polymerization, so that the wear resistance of the yarn is improved; the modified polylactic acid fibers are obtained through melt spinning of polylactic acid, poly (adipic acid) / butylene terephthalate and modified chitin nanofibers, the compatibility of the chitin nanofibers and the polylactic acid is improved through polyethylene glycol, and the polylactic acid fibers are enhanced; coarse yarns are obtained through combing, drawing, roving and spinning, the coarse yarns are soaked in a finishing agent, and finally the finished blended yarns are obtained and have good wear resistance and wrinkle resistance.

The invention relates to the technical field of textile, in particular to a xylitol-containing plant-source composite ultra-short fiber and a preparation method thereof.The xylitol-containing plant-source composite ultra-short fiber comprises an ultra-short fiber base material and plant-source functional particles, the plant-source functional particles are obtained by conducting chemical modification, microencapsulation and nanocrystallization treatment on citramalic acid, xylitol and plant-source extracts, and the plant-source functional particles are prepared from the ultra-short fiber base material and the plant-source extracts. According to the present invention, the heat absorption characteristic of xylitol is utilized to achieve the contact cool feeling effect, the antibacterial components of the plant source extract are adopted to form the antibacterial barrier so as to prevent the growth and the reproduction of bacteria and achieve the antibacterial effect, and the stability of the functional components is significantly enhanced through the chemical modification of citramalic acid; microencapsulation and nanocrystallization treatment improve the dispersibility and compatibility of the plant-derived functional particles in fibers and ensure more lasting and effective functional performance, and meanwhile, the components of the plant-derived functional particles are all derived from the nature and have the characteristics of reproducibility and degradability, so that the plant-derived functional particles can effectively replace traditional organic synthesis functional modification aids.

The invention belongs to the technical field of textile, and relates to a preparation method of a three-dimensional spacer fabric with a circular structure, which specifically comprises the following steps: weaving an outer woven tube by using a group of yarns a, synchronously weaving an inner woven tube by using a group of yarns b, sleeving the inner woven tube with the outer woven tube, in the weaving process, a plurality of spacer filaments are inserted between the interweaving points formed by the yarn a and the interweaving points formed by the yarn b, the spacer filaments are repeatedly inserted along with the weaving process, and the three-dimensional spacer fabric of the circular structure is obtained after weaving is finished. The method is simple, the three-dimensional spacer fabric of the circular structure can be efficiently prepared, and the spacing of the three-dimensional spacer fabric of the circular structure is easy to adjust.

The invention relates to the technical field of textiles, in particular to a high-water-absorption antibacterial bath towel fabric and a preparation method thereof. The invention discloses a high-water-absorption antibacterial bath towel fabric which is prepared from the following raw materials in parts by mass: 40-45 parts of cotton fibers, 30-36 parts of bamboo charcoal fibers, 50-56 parts of polyester, 20-25 parts of a hydrophilic finishing agent and 5-6 parts of a quaternization modified composite antibacterial agent with active functional groups. According to the bath towel fabric, various raw materials are carefully proportioned and interact, so that the bath towel fabric has multiple functions, not only has excellent water absorption and antibacterial performance, but also has the characteristics of washing resistance and lasting deodorization, and provides healthier, more sanitary and more comfortable use experience for consumers.

The invention relates to a flame-retardant high-temperature-resistant fiber woven fabric and a preparation process thereof, and belongs to the technical field of textiles. The preparation method comprises the following steps: grafting and crosslinking a self-made grafting monomer and polyvinyl chloride, and then weaving to obtain the modified polyvinyl chloride fiber fabric; a phosphate group in the monomer can promote surface carbonization to form a protective carbon layer, silicate generated by decomposition of a siloxy group at a high temperature is combined with the carbon layer to improve the strength and melt viscosity of the carbon layer, and the phosphate group and the siloxy group synergistically enhance the flame retardance and the molten drop resistance of the fabric; a cyclic phosphate group and a pyridine ring are connected to form a rigid structure with relatively high thermal stability, chain segment movement is limited, a plurality of siloxy groups in a monomer are crosslinked to form a crosslinked network, molecular chain segments are difficult to move, and the combination of the rigid group and the crosslinked network improves the high temperature resistance of the fabric and effectively improves the mechanical properties of the fabric; in addition, the positively charged quaternary ammonium salt structure in the monomer improves the antistatic performance of the fabric, and cooperates with trifluoromethyl to destroy the structural integrity of bacterial cells, so that the fabric achieves efficient bacteriostasis.

The utility model discloses opposite-pull circular hole jacquard warp knitting mesh cloth, which belongs to the technical field of textile, and comprises a mesh cloth body integrally knitted by a jacquard warp knitting machine, the mesh cloth body comprises a surface layer, a bottom layer and a middle layer, the surface layer of the mesh cloth body is provided with a plurality of regular circular lifting holes, and the regular circular lifting holes are formed by opposite-pull knitting of jacquard guide bars in the opposite direction.

The present application relates to the field of textile technology, and specifically discloses a high-elastic hygroscopic antistatic composite fiber and a preparation method thereof; a high-elastic hygroscopic antistatic composite fiber, comprising the following raw materials in parts by weight: 20-40 parts of polytrimethylene terephthalate, 60-80 parts of polyethylene terephthalate, 10-18 parts of nano inorganic particles, 5-8 parts of sericin, 5-10 parts of sulfonic acid hydrophilic modifier, 3-5 parts of polyether ester antistatic agent, 5-8 parts of carbon nanotubes, and 1-3 parts of surfactant; the polyether ester antistatic agent is preliminarily prepared into an antistatic masterbatch with carbon nanotubes; by combining polytrimethylene terephthalate and polyethylene terephthalate, under the synergistic effect of other components, the elasticity, antistatic and hygroscopic properties of the composite fiber can be improved on the basis of maintaining the original strength of the fiber.

The invention belongs to the technical field of textile, and particularly relates to a preparation method of a high-density bamboo joint drawn yarn, which comprises the procedures of oiling, pre-interlacing, drawing and sizing and main interlacing. An oil nozzle is adopted for oiling, the pre-interlacing air pressure ranges from 0.38 MPa to 0.45 MPa, a used pre-interlacing device is a uniform-section vertical plate, airflow spray holes are horizontally formed in the pre-interlacing device, a certain cross section of the pre-interlacing device passes through the airflow spray holes, the cross section is an Archimedes spiral, the polar angle is larger than 360 degrees and smaller than 450 degrees, the airflow spray holes are located in the Archimedes spiral (the polar angle is 180 degrees), and the airflow spray holes are communicated with the airflow spray holes. The airflow spraying holes face the center of the Archimedes spiral; groove-shaped wire guide hooks composed of U-shaped wire guide hooks and limiting blocks are adopted at an inlet and an outlet of the pre-interlacer. According to the method, the fastness and density of network nodes can be effectively improved, then the bamboo joint density is improved, and the prepared high-density bamboo joint drawn yarn has excellent mechanical properties and can show a high-density gap bamboo joint effect when being applied to conventional cloth.

The invention provides a capacitive sensor formed by multilayer folding and horizontal knitting, which comprises a first spacer fabric, a connecting layer knitted on the upper surface of the first spacer fabric, and an upper horizontal stripe weave arranged above the first spacer fabric and connected with the connecting layer to form a second conductive layer, the first spacer fabric comprises a lower horizontal stripe weave used for forming a first conductive layer, an upper surface layer arranged above the lower horizontal stripe weave, and spacer filaments arranged between the lower horizontal stripe weave and the upper surface layer and used for connecting an upper layer coil and a lower layer coil; therefore, the full-textile sensor which is provided with a plurality of sensing units and is high in sensitivity is prepared through the integrally-formed textile technology, the full-textile sensor has a larger pressure response range, preparation can be completed without the mode that multiple layers of fabric are cut and then stacked after being discharged from a machine, consumed materials are few, and the preparation process is simple.

The utility model discloses a feeding roller and a rotor spinning machine, and relates to the technical field of spinning. A plurality of bead groups are fixedly arranged on the outer side wall of the roller shaft, the bead groups are circumferentially and uniformly distributed around the axis of the roller shaft, and a spacing is formed between every two adjacent bead groups; the bead group comprises at least one first bead, and the first bead extends along the axis of the roller shaft; and in the circumferential direction of the roller shaft, the circumferential length of the interval is consistent with the circumferential length of one rib group. And finally, the nub effect of the prepared hemp-feeling yarn is better.

The utility model discloses a concave-convex AI woven fabric, which belongs to the technical field of textile and comprises a mesh body, the mesh body is formed by winding at least two layers of pure TPU (thermoplastic polyurethane) yarns or TPU covering yarns, the yarns of each layer are distributed in parallel in the same direction, the distribution directions of the yarns among the layers are different, the yarns among the layers are staggered, and the mesh body is formed by interweaving the pure TPU yarns or the TPU covering yarns. The mesh cloth body is integrally formed through high-temperature melting and bonding, and concave-convex lines are formed on the mesh cloth body through a plastic uptake process. Mesh holes are further formed in the mesh cloth body.

The invention relates to the technical field of textile, in particular to lyocell fiber and polyester fiber blended yarn and a preparation method and application thereof, and aims to solve the problems that the prepared jean fabric is easy to fluff and pilling, the aesthetic property and the service life are affected, the skin-friendly performance and the antibacterial performance need to be improved, and the service life of the jean fabric is affected due to poor wear resistance of the existing blended yarn. The requirements of people on the high-quality jean fabric cannot be met; according to the preparation method, the proportion of the modified polyester fibers to the lyocell fibers is reasonable, and the advantages of the modified polyester fibers and the lyocell fibers are fully exerted, so that the prepared blended yarn is excellent in hygroscopicity, breathability, shape retention, wear resistance, antistatic property, antibacterial property and the like, excellent in comprehensive performance and suitable for popularization and application. The method is suitable for producing fashionable and environment-friendly denim fabric, the quality and functionality of the denim fabric can be improved, the requirements of people for high-quality denim fabric are met, and the method has wide market application prospects.

The invention provides a three-layer composite core-spun linen yarn and application thereof, and relates to the technical field of fabric spinning. The three-layer composite core-spun linen yarn comprises a core-spun linen yarn and two winding filaments which are interlaced, wound and twisted outside the core-spun linen yarn; the core-spun linen yarn is composed of a core yarn and a sheath yarn layer, and the sheath yarn layer is formed by winding a plurality of sheath yarns outside the core yarn; the core yarn is a fine denier filament, the sheath yarn is a linen yarn, and the winding filament is a functional chemical fiber filament; the three-layer composite core-spun linen yarn is used for spinning and preparing high-quality and low-defect fabric. The defects in the prior art are overcome, the designed three-layer composite core-spun linen yarn can effectively reduce the problem that hairiness is exposed out of the core-spun linen yarn, the quality of fabric prepared through subsequent spinning is improved, the defect rate is reduced, and the economic benefits of production are improved.

The invention belongs to the technical field of textile, and particularly discloses a moisture-absorbing and heating polyester fiber and a preparation method thereof.The preparation method comprises the steps that 1, modified polyester master batch is prepared, specifically, an inorganic layered silicate nanometer material, inorganic mineral filler, a quaternary ammonium salt organic compound and polyester are subjected to shear blending and extrusion granulation in a molten state, and the modified polyester master batch is prepared; and (2) preparing fibers, namely preparing polyester fibers with a sea-island structure by taking polyester master batches and the modified polyester master batches as island phases and alkali-soluble polyester as a sea phase, and dissolving the sea phase to obtain the moisture-absorbing and heat-generating polyester fibers. The moisture-absorbing and heat-generating performance of the fiber is improved through moisture-absorbing and heat-generating modification of polyester, combination with the superfine form of the fiber and exertion of a synergistic effect, and the fiber is good in mechanical property, simple in preparation process and low in cost.