10results about How to "Improve weavability" patented technology

The invention discloses a density design method for a high-performance fiber 2.5 D woven preform, the high-performance fiber 2.5 D woven preform is composed of warp yarns and weft yarns, the warp yarns and the weft yarns are connected layer by layer in the thickness direction, and an angle interlocking structure is a basic 2.5 D woven preform structure. The density of the designed angle interlocking structure woven prefabricated body is divided into warp density and weft density. Warp yarn density is determined by reeds, and weft yarn density is controlled by mechanical beating-up force. After the fiber bundle passes through the reed dent process, the cross section of the fiber bundle is influenced by extrusion deformation of the reed dent and is in a square shape, so that the diameter of the fiber bundle is theoretically calculated. The density of the woven preform is designed according to the diameter of the fiber bundle. According to the method, when the high-performance fiber 2.5 D prefabricated body is woven, fiber bundles cannot be extruded and deformed, the number of times of mutual entanglement and adhesion is small, fiber weaving abrasion is small, the weavability of the woven prefabricated body is improved, and the overall mechanical property of the woven prefabricated body is improved.

The invention discloses a continuous zirconium oxide fiber with an ionic gel coating and a preparation method of the continuous zirconium oxide fiber, and belongs to the technical field of continuous inorganic ceramic fiber new materials. The ionic gel coating formed by rapid polymerization of ramie fibers modified by a coupling agent and a deep eutectic solvent under UV illumination can effectively protect the fibers on the premise of being thin and uniform in thickness and not damaging the softness of the fibers, and endows the fibers with certain self-lubricating performance; therefore, the friction damage caused by the continuous zirconium oxide fiber in the weaving process is reduced. Meanwhile, the ionic gel coating has good mechanical performance and self-repairing capacity and is not prone to being stripped from the fibers, the abrasion resistance of the zirconium oxide fibers is improved, the stability of a product in the three-dimensional texture process is improved, and the ionic gel coating has great commercial value.

The utility model relates to a composite cable for aerospace. The composite cable is sequentially provided with a signal wire core, a control wire core, a power wire core, a filling layer, a shielding layer, an anti-radiation layer and an outer protective layer from inside to outside, each signal wire core comprises a signal wire core conductor, and a signal wire core inner insulating layer and a signal wire core outer insulating layer which are sequentially arranged on the outer side of the signal wire core conductor; the two signal wire cores are twisted and filled with a first filling layer; a first shielding layer and a second shielding layer are sequentially arranged on the outer side of the first filling layer to form a twisted pair wire core; a second filling layer is arranged on the outer sides of the two signal twisted pair wire cores; a control wire core is arranged outside the twisted pair cable core; the two signal twisted pair wire cores are arranged in the center, the control wire cores are arranged around the signal twisted pair wire cores, and one-time cabling is completed to form a control signal cable core; two layers of hot melting aluminum foil mylar tapes are arranged on the outer side of the control signal cable core. The composite cable for aerospace avoids the interference of electromagnetic waves, reduces the size of the cable, reduces the cost, improves the use stability of the cable, and prolongs the service life of the cable.

The invention discloses a thermoplastic high-strength fiber covering yarn prefabricated composite material and a preparation method thereof. The preparation method provided by the invention comprises the following steps: 1) impregnating core yarns in a resin sizing agent and resin slurry, and carrying out pre-impregnation treatment to obtain high-strength fiber core yarns; wherein the material of the resin slurry is selected from at least one of polyether-ether-ketone, nylon and polypropylene; 2) covering the surface of the high-strength fiber core yarn with the yarn by using a multi-spindle knitting machine to obtain a knitted core-spun yarn; (3) weaving the weaving covering yarn through a multi-spindle weaving machine to obtain a covering yarn preset sleeve; and 4) curing the core-spun yarn preset sleeve to obtain the thermoplastic carbon fiber woven reinforced composite material. The composite material provided by the invention has the characteristics of high resin content, high structural stability and excellent interface performance, also has high flexibility, can be packaged by folding, winding, winding and the like, realizes extremely low space occupancy, is convenient to store and transport, and greatly reduces the storage and transportation cost.

This invention discloses an antibacterial and antistatic cellulose blended yarn. The raw materials for preparing the blended yarn include natural fibers, deodorizing hemp pulp fibers, antistatic carbon fibers, mineral-modified fibers, and an antistatic agent. The raw materials, by weight, include the following components: 20-30 parts natural fibers, 10-12 parts deodorizing hemp pulp fibers, 10-20 parts antistatic carbon fibers, and 6-8 parts mineral-modified fibers. The natural fibers include bamboo fibers, cotton fibers, and hemp fibers, and possess inherent antibacterial components. The mineral-modified fiber raw materials are nano-zinc oxide and nano-titanium dioxide particles. The advantages of this invention compared to existing technologies are: the antibacterial and antistatic cellulose blended yarn of this invention has a soft and smooth hand feel and improved weaving performance; it retains the unique antibacterial and moisture-wicking functions of hemp fibers, while inheriting the comfortable and skin-friendly characteristics of cotton and viscose regenerated cellulose fibers; and it improves the antistatic performance of the blended yarn.

The present invention belongs to the field of spinning technology, and relates to a fancy composite network yarn and a preparation method and implementation device thereof. The network yarn is composited by two filament multifilaments, and has irregularly arranged parallel parts and mixed parts in the longitudinal length, forming a variety of appearance effects. By controlling the airflow parameters and wire path design of the two network nozzles, the unstable mixing and entanglement of the filament multifilaments in the network process are achieved to form a unique network structure. The network yarn of the present invention not only improves the cohesion and weavability, but also enriches the appearance style of the fabric and broadens the application field of the filament fabric. The preparation method is simple, the device structure is reasonable, and it is easy to implement.

The invention discloses a low-elasticity vortex composite yarn, the low-elasticity vortex composite yarn comprises a core yarn and an outer coating layer, the core yarn is formed by 2-3 pre-oriented PBT low-elasticity filaments which are prepared in advance through low-twist composite winding according to process requirements, and the outer coating layer is composed of various untwisted short fibers. The multiple types of untwisted short fibers are subjected to cotton grabbing, cotton blending, scutching, cotton carding and drawing to obtain corresponding types of drawn slivers; finally, the core yarn is fed into a vortex tube through a core yarn guide hole in the center of the pull-up body from a nozzle inlet of a vortex spinning machine, meanwhile, drawn slivers of corresponding types are fed into a nozzle in proportion according to process requirements, and the drawn slivers are injected into the vortex tube at a high speed through compressed air along a spraying hole; and the short fibers are driven by high-speed rotating airflow in the vortex tube to rotate and wrap the core yarn to be spun into the yarn. By means of the mode, the size stability of the yarn can be obviously improved under the condition that the weavability of the vortex composite spinning yarn is not reduced, and therefore the requirement for the contour definition of a woven pattern is met.

The invention discloses a dyeing process of tencel / flax blended yarn for light and thin denim fabric. The dyeing process comprises the steps of warp preparation and warp beam dyeing. Sequentially carrying out pre-wetting, multi-stage indigo dyeing, mild oxidation and alternate washing, post-treatment and drying; the warp beam dyeing is specifically as follows: warp yarns sequentially pass through a pre-wetting tank, at least four dyeing tanks, an oxidation zone, a rinsing tank and a post-treatment tank. By controlling the dyeing liquid to be alkalescent, low-temperature and low-tension technologies, chemical damage and physical stretching to tencel fibers are reduced, and fuzzing and broken ends are reduced. The pre-treated activated fiber and the gradient decreasing dye liquor concentration are matched with sufficient oxidation, the dye is promoted to diffuse into the fiber, the good dye penetration effect is achieved, the colored light is pure, and the color uniformity is guaranteed. And the weaving property of the yarn is improved through the post-treatment softening procedure. Due to hydrophilic softness and anti-wrinkle finishing, the yarn is soft and full in hand feeling and perfectly meets the comfort requirement of light and thin denim.

This utility model relates to the technical field of fancy composite network yarn preparation equipment. A device for preparing high-cohesion, high-weaveability fancy composite network yarn includes a base plate, a winding mechanism on the top left side of the base plate, and a guide mechanism on the top right side of the base plate. An auxiliary mechanism is provided at the bottom of the base plate. The winding mechanism includes a connecting plate, a motor mounted on the top of the connecting plate, a third gear fixedly connected to the output end of the motor, a third connecting rod fixedly connected to the top of the third gear, and a support rod fixedly connected to the top of the third connecting rod. Through holes are provided at the top and bottom ends of both sides of the support rod, and telescopic rods are installed in each of the four through holes. A support plate is fixedly connected to the telescopic end of the telescopic rod, and a spring is provided on the outside of the telescopic rod. This utility model, through the telescopic rods and springs in the winding mechanism, enables the device to adapt to rolls of different sizes, improving the production efficiency of fancy composite network yarn.

The invention provides a method for manufacturing a real silk seamless knitted cheongsam. The method comprises the following steps: determining the size of a to-be-manufactured cheongsam; determining transverse density and straight density numerical values of each tissue of the cheongsam, and determining each process parameter of the cheongsam; carrying out computer knitting on the real silk yarns subjected to double-strand twisting treatment by adopting a compound-needle 18-needle computerized flat knitting machine, so as to obtain a cheongsam body knitted sheet; meanwhile, computer knitting is conducted on the real silk yarn subjected to double-strand twisting treatment through a Stock 16-needle computerized flat knitting machine, and therefore a cheongsam collar knitted piece is obtained; sewing the cheongsam collar knitted sheet on the cheongsam body knitted sheet by adopting a 20-needle disc sewing machine to obtain a cheongsam garment; compared with the prior art, the method has the beneficial effects that the purpose of integrally forming the real silk cheongsam is achieved by performing double-strand twisting treatment on the real silk yarns and adopting a compound needle of the Island-Tu company and a rake technology of a computerized flat knitting machine, so that the problem of waste of real silk fabrics in production is solved, and the production cost is reduced. And moreover, the problem of manpower and energy loss caused by sewing is solved.