530 results about "UHMWPE polyethylene" patented technology

A clothing article is disclosed herein, comprising: at least one base knit region, each base knit region being formed of a base knit comprising an ultra-high molecular weight polyethylene (UHMWPE) fiber and at least one base stretch fiber being knit together in a plated configuration to form a jersey knit; and at least one reinforcing knit region, each reinforcing knit region being formed of a reinforcing knit comprising the UHMWPE fiber and the at least one base stretch fiber being knit together in a plated configuration to form a jersey knit. The reinforcing knit region further comprising a reinforcing stretch fiber being alternatingly knit with the jersey knit of the reinforcing knit in which within each given course of the jersey knit of the reinforcing knit, for every sequence of m +n consecutive loops of the course, the reinforcing stretch fiber is looped with m consecutive loops of the jersey knit of the reinforcing knit and n consecutive loops of the jersey knit of the reinforcing knit are free of looping with the reinforcing stretch fiber.

The invention relates to the related technical field of warm-keeping fabrics, in particular to a hollow warm-keeping yarn fabric which is formed by weaving hollow fibers in a staggered plaid structure, the staggered plaid structure is formed by interweaving warp yarns and weft yarns in a spiral winding mode, and micro air chambers are formed at the interweaving points of the warp yarns and the weft yarns. The hollow fiber comprises a core layer and a sheath layer, the core layer is of a plum blossom petal-shaped multi-cavity structure formed by ultra-high molecular weight polyethylene, cavities are separated through radial connecting bridges, and the sheath layer sequentially comprises a heat conduction enhancing layer, an infrared reflecting layer and a dynamic temperature adjusting layer from inside to outside. Dynamic heat and humidity collaborative management, intelligent temperature response, radiation heat management and structural stability are effectively improved, the heat retention property and moisture permeability of the fabric are improved, self-adaptive adjustment can be achieved according to the body temperature of the human body, the heat radiation transmission efficiency is enhanced, the super-hydrophobic interface modification and covalent bonding technology is adopted, and the thermal radiation performance of the fabric is improved. And the functional layer can still keep high bonding strength after being washed repeatedly.

The invention provides an ultra-high molecular weight polyethylene fiber resin composite material interface regulation composition which comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene fiber, 12 parts of polyethylene, 0.6 part of a compatilizer, 0.03 part of an initiator, 2.5 parts of gallic acid, 1 part of tetraethylenepentamine and 5 parts of nano silicon dioxide. The compatilizer is used for melt grafting with polyethylene, and the initiator is used for initiating melt grafting of the compatilizer and polyethylene. The invention also provides a method for carrying out interface regulation and control by adopting the interface regulation and control composition and an ultra-high molecular weight polyethylene fiber resin composite material prepared by the method. The ultra-high molecular weight polyethylene fiber resin composite material obtained by carrying out interface regulation and control treatment on the ultra-high molecular weight polyethylene fiber resin composite material interface regulation and control composition has a good interface state, excellent mechanical properties and good impact resistance.

The invention provides an ultra-high molecular weight polyethylene fiber woven reinforced polyethylene / polyvinyl chloride composite pipe and a preparation method thereof. The composite pipe is of a five-layer composite structure and comprises a high-density polyethylene core pipe on the inner layer, an ultra-high molecular weight polyethylene fiber woven reinforcement layer on the middle layer, a polyvinyl chloride coated pipe on the outer layer, a first adhesive layer and moisture curing reaction type polyurethane hot melt adhesive on the second adhesive layer. The preparation method of the composite pipe comprises the steps of inner layer core pipe preparation, polyurethane hot melt adhesive coating, fiber woven reinforcement layer forming, secondary polyurethane hot melt adhesive coating, outer layer wrapping and the like. The fiber performance is protected by adopting a low-temperature process, and efficient bonding is realized; the ultra-high molecular weight polyethylene fibers are alternately woven and wound to form the grid reinforcing layer, so that the pipe is endowed with high strength and impact resistance. The problems that a traditional composite pipe is prone to layering between layers, insufficient in pressure bearing capacity, complex in construction connection and the like are solved, and the composite pipe has the advantages of being high in strength, resistant to corrosion, easy to connect and the like.

The invention discloses a hybrid gradient fiber composite bulletproof laminated plate and a preparation method thereof, and belongs to the technical field of composite target plates. The preparation method comprises the following steps: coating the surface of each aramid fiber cloth laminated layer with waterborne polyurethane, and sequentially performing drying and tailoring forming to obtain a plurality of tailored and formed aramid fiber cloth composite layers; respectively cutting and forming the plurality of ultra-high molecular weight polyethylene fiber non-woven fabric laminated layers; and sequentially carrying out staggered stacking, wrapping, mold embedding and hot press molding on the waterborne polyurethane layers in the multiple tailored and molded ultra-high molecular weight polyethylene fiber non-woven fabric laminated layers and the multiple tailored and molded aramid fiber cloth composite layers, so as to obtain the hybrid gradient fiber composite bulletproof laminated plate. The interface bonding between the aramid fiber cloth and the ultra-high molecular weight polyethylene non-woven cloth in the hybrid gradient fiber composite bulletproof laminated plate is firm, and the hybrid gradient fiber composite bulletproof laminated plate has good energy absorption and blunt impact resistance effects and good bulletproof performance.

The invention discloses a method for producing multimodal polyethylene through series connection of multiple reactors, and belongs to the field of olefin polymerization. The low-molecular-weight or medium-molecular-weight ethylene polymer is produced through polymerization in the first reactor, the obtained product enters the intermediate treatment unit to remove hydrogen, and then part of the product is shunted to enter the second reactor to be mixed with the ultra-high-molecular-weight ethylene polymer produced through ethylene polymerization in the second reactor; all polymers of the second reactor are returned to the intermediate treatment unit, and the rest products after hydrogen removal enter a third reactor and are mixed with high-molecular-weight ethylene polymers generated by copolymerization of ethylene and comonomers in the third reactor to generate multimodal polyethylene. The multimodal polyethylene produced by the method is wide in molecular weight distribution, and the molecular weight of ultra-high molecular weight polyethylene is flexible to regulate and control. According to the invention, material circulation between the third reactor and the second reactor is adopted, molecular chain-level mixing among the components is achieved, the compatibility is good, and the mechanical property is more excellent.

The invention relates to the field of polyethylene fibers, in particular to a cutting-resistant polyethylene fiber. By selecting the combination of the ultra-high molecular weight polyethylene powder, the carbon fibers and the nano silicon dioxide and selecting the proportion, the cutting resistance of the product can be well ensured, and the carbon fibers can remarkably improve the tensile strength, bending strength and rigidity of the material and reduce the thermal expansion coefficient of the product at the same time; and the nano silicon dioxide can improve the surface smoothness, hardness and wear resistance of the product and enhance the overall performance of the material. In addition, the additive and assistant system disclosed by the invention is also obtained through repeated experiments, and the cutting resistance of the product is not influenced.

The invention belongs to the field of novel polyamide composite fiber materials, and particularly discloses a high-toughness polyamide fiber composite material and a preparation method thereof. The composite material is prepared from the following raw materials in parts by weight: 55-75 parts of long-chain polyamide PA610 resin, 10-25 parts of ultra-high molecular weight polyethylene fiber, 8-18 parts of polyether block amide elastomer, 1.5-4 parts of a compound nucleating agent, 0.8-2 parts of a titanate coupling agent and 0.3-1 part of a composite antioxidant. The preparation method is characterized by comprising the following steps: firstly, carrying out surface pretreatment on the ultra-high molecular weight polyethylene fiber by adopting a low-temperature plasma technology so as to improve the interfacial compatibility of the ultra-high molecular weight polyethylene fiber and a resin matrix; and then carrying out melt blending granulation on the pretreated fiber and other raw materials through a twin-screw extruder, wherein the fiber is added from a side feeding port to avoid excessive shearing and breaking. The obtained product has ultrahigh impact toughness, excellent rigidity, excellent low-temperature toughness and heat resistance, and is especially suitable for the fields of manufacturing automobile parts, sports protection equipment and the like with extremely high requirements on toughness and durability.

The invention relates to the field of cable descending rope strength testing equipment, in particular to an ultrahigh molecular weight polyethylene fiber high-altitude cable descending rope strength detection device which comprises a plurality of strength testing assemblies, a climate simulation assembly, an environment simulation assembly and a stress simulation assembly. The strength testing assembly is used for testing the strength of the rope descending rope; the climate simulation assembly is used for simulating climate factors of the rope descending rope in the testing process; the environment simulation assembly is used for simulating environment factors of the rope descending rope in the testing process; the stress simulation assembly is used for simulating stress factors of the cable descending rope in the testing process, the conditions of stress, abrasion, lateral stress direction deflection, rope body deflection and the like of the cable descending rope in the actual falling process can be simulated, and the testing scene is made to be highly attached to the actual use scene of high-altitude mountain cable descending; therefore, more real and reliable strength performance data can be obtained.

The invention belongs to the technical field of high polymer material processing, and particularly relates to a melt extrusion molding method of an ultra-high molecular weight polyethylene wide sheet. Aiming at the technical bottlenecks of poor melt flowability, extrusion fracture and the like caused by molecular chain entanglement of UHMWPE, continuous and stable extrusion of UHMWPE wide sheets is realized by compounding a specific flow modifier and combining a stepped precise temperature control strategy and a forced symmetric cooling process. According to the method, the melt fracture phenomenon is eliminated, the intrinsic performance such as high wear resistance and low temperature resistance of UHMWPE is completely reserved, the efficiency and size limitation of a traditional mold pressing process is broken through, and a large-scale production solution of high-performance sheets is provided for the high-end fields such as food machinery and medical implants.

The invention belongs to the technical field of textile material processing, and particularly discloses a preparation method of high-strength low-shrinkage composite yarn for spinning. A preparation method of a high-strength low-shrinkage composite yarn for spinning comprises the following steps: (1) respectively drying ultra-high molecular weight polyethylene and PET polyester, adding maleic anhydride grafted PE, a treated metal organic framework material, boron carbide nanoparticles, cellulose acetate and a silane coupling agent KH550, uniformly mixing, and carrying out melt extrusion to obtain nascent fibers; (2) performing first-stage pre-drafting, second-stage high-temperature tension field drafting and third-stage low-temperature relaxation treatment on the nascent fiber to obtain treated fiber; and (3) dipping the treated fiber in an ethanol solution containing nano SiO, and performing infrared radiation curing to obtain the high-strength low-shrinkage composite yarn for spinning. The composite yarn has good mechanical strength, wear resistance and low contractibility, and the yarn has wide application due to the high breaking strength.

The invention discloses a thermoplastic whole-core flame-retardant conveying belt and a preparation method thereof. The thermoplastic whole-core flame-retardant conveying belt is composed of a core layer, a flame-retardant covering layer, a wear-resistant layer and a bonding layer. The core layer adopts three layers of aramid fiber / polyester mixed fabric (the radial linear density is greater than or equal to 5000N / cm) and is impregnated with a halogen-free flame-retardant polyurethane sizing material (containing 15phr of APP and 10phr of zinc borate); the flame-retardant covering layer is an intumescent flame-retardant system formed by adding 5 phr of microencapsulated red phosphorus, 20 phr of magnesium hydroxide and 8 phr of melamine cyanurate into an EVA (Ethylene Vinyl Acetate)-based compound; the surface wear-resistant layer is made of ultra-high molecular weight polyethylene (Mw is larger than or equal to 3 * 10 < 6 >, and the thickness ranges from 0.8 The product has the advantages of high strength, light weight, flame retardance and high joint strength retention rate, and is suitable for heavy-load high-temperature scenes such as mines and metallurgy.

The invention discloses a polymer composite separator for a lead-acid storage battery and a preparation method thereof, and belongs to the technical field of separator preparation, the polymer composite separator comprises the following raw materials by weight: 40-55 parts of ultra-high molecular weight polyethylene, 0.5-1 part of an initiator, 0.5-1.5 parts of sodium allyl thioglutamate, 105-115 parts of silicon dioxide, 10-20 parts of alkyl succinic anhydride modified cyclodextrin, and 180-260 parts of filling oil; the preparation raw materials of the sodium allyl thioglutamate comprise glutamic acid and allyl isothiocyanate, the sodium allyl thioglutamate and the alkyl succinic anhydride modified cyclodextrin are introduced into the preparation raw materials of a traditional PE partition plate, and finally the prepared polymer composite partition plate for the lead-acid storage battery has high porosity and low resistivity; and the anti-oxidation performance is excellent, the puncture-resistant strength is high, and the development of the lead-acid storage battery industry towards the direction of high energy density and long cycle life is facilitated.

The invention discloses a modified ultra-high molecular weight polyethylene fiber as well as a preparation method and application thereof. The modified ultra-high molecular weight polyethylene fiber is prepared from 100 parts by mass of ultra-high molecular weight polyethylene resin, 3-10 parts by mass of modified nano composite ceramic particles, 2-8 parts by mass of modified aramid fiber, 1-5 parts by mass of modified carbon nanotubes and 1-3 parts by mass of an auxiliary agent through the processes of a two-stage blending method, dry-wet spinning, gradient hot stretching, pulse heat setting and the like. The tensile strength of the prepared modified ultra-high molecular weight polyethylene fiber is greater than 4.5 GPa, the elongation at break is kept at 5.0-5.5%, the cutting resistance is as high as 310N, the puncture resistance is as high as 465N, and the modified ultra-high molecular weight polyethylene fiber can be applied to protective products.

The invention discloses a PBO fiber reinforced bulletproof helmet and a preparation method thereof. The PBO fiber reinforced bulletproof helmet is provided with a shell, the shell comprises a resin matrix and reinforcing material layers, the reinforcing material layers are distributed in the resin matrix, and the adjacent reinforcing material layers are fixedly combined through the resin matrix; the reinforcing material layer comprises PBO fibers. According to the bulletproof helmet, the PBO fiber is adopted as a reinforcement body to prepare the bulletproof helmet for the first time, and the problems that an existing aramid fiber helmet is poor in bulletproof performance and an ultra-high molecular weight polyethylene helmet is poor in stability are solved; according to the preparation method provided by the invention, the hot pressing process is optimized, so that the problem of deviation caused by smooth surface of the PBO fiber and poor bonding property with the resin is avoided, and the PBO fiber reinforced bulletproof helmet with stable shape and excellent performance is prepared.

The invention discloses a preparation method of ultra-high molecular weight polyethylene fibers, and belongs to the technical field of high molecular compound compositions and fiber materials, and the preparation method comprises the following steps: adding ultra-high molecular weight polyethylene powder into a solvent, and dissolving to obtain a spinning solution; adding the spinning solution into a double-screw extruder, and blending and extruding to obtain a spinning solution; filtering the spinning solution, extruding through a spinneret plate to obtain cellosilk, extracting, cleaning, drying, stretching and heat-setting the cellosilk, immersing the cellosilk in a glue solution for a period of time, taking out the cellosilk, cleaning and drying to obtain the ultra-high molecular weight polyethylene fiber. According to the preparation method, the fiber yarns are immersed into the glue solution, and the modified nano aluminum oxide / carbon nanotube composite powder is added into the spinning solution, so that the breaking strength and the wear resistance of the polyethylene fiber are remarkably improved.

The invention discloses a high-toughness schoolbag textile fabric and a manufacturing method thereof, and relates to the technical field of textile processing, and the manufacturing method comprises the following steps: mixing polyester staple fibers, cotton fibers and silver ion modified polyester staple fibers according to a mass ratio of 1: 0.8: 05, carrying out a blowing-carding process, opening and carding to obtain a mixed cotton web, drawing the mixed cotton web, and drying to obtain the high-toughness schoolbag textile fabric. The preparation method comprises the following steps: preparing a base cloth layer, spinning blended yarns through roving and spinning processes, weaving through an air jet loom to obtain a base cloth layer, weaving ultra-high molecular weight polyethylene fibers through a shuttleless textile machine in a plain weave manner to obtain a reinforcing layer, and weaving nylon 66 filaments through a water jet loom in a twill weave manner to obtain a surface layer base cloth. Through layered combination of the base cloth layer, the reinforcing layer and the wear-resistant surface layer, the reinforcing layer can effectively resist traction caused by the weight of daily books and reduce fiber fatigue damage, the wear-resistant surface layer can reduce abrasion damage to the surface of the schoolbag fabric caused by friction, cleaning or sliding friction and the like, and the service life of the schoolbag is prolonged.

The invention belongs to the technical field of high polymer material recovery, and particularly relates to an ultra-high molecular weight polyethylene fiber leftover green degumming agent and a degumming method. The green adhesive remover for the ultra-high molecular weight polyethylene fiber leftovers comprises the following components: 60-80 parts of biodegradable ionic liquid, 5-10 parts of catalyst organic alkali and 10-35 parts of deionized water. The degumming agent is green, environment-friendly and pollution-free, and can be repeatedly used; degumming conditions are mild, operation is simple, and the degumming rate is gt; the gel content of the recovered fibers is lower than 2wt%, and high-value recovery of the ultra-high molecular weight polyethylene fibers is facilitated.

A webbing for use in a fall protection device, such as a self-retracting lifeline having leading edge capabilities, is provided having a double cloth construction with the exterior of the webbing constructed of woven, ultra-high molecular weight polyethylene yarns and having stuffer yarns positioned in the interior of the fabric, wherein the stuffer yarns are made of high-tenacity fibers, such as aramid fibers.

The invention relates to the technical field of high polymer materials, in particular to ultra-high molecular weight polyethylene tarpaulin and a preparation method thereof.The preparation method comprises the following steps that S1, ultra-high molecular weight polyethylene resin is subjected to melt spinning, high-power hot stretching and twisting treatment; s2, weaving the fiber monofilaments into base cloth through a weaving process; s3, mixing the components according to a preset proportion to form a mixture A; s4, melting and plasticizing the mixture A, and curtain-coating the double surfaces of the base cloth with composite film layers through a curtain-coating die head; s5, a reinforced waterproof layer material is attached to the outer side of the composite film layer; and S6, finally, edge cutting and rolling treatment are conducted. The ultra-high molecular weight polyethylene fiber base material, the optimized composite film layer and the reinforced waterproof layer are adopted, and a multi-step precise process is combined, so that the tensile strength, the tear resistance, the weather resistance and the waterproof performance of the tarpaulin are remarkably improved, and the tarpaulin can adapt to various complex environments and high-strength use scenes.

The invention belongs to the technical field of material processing, and discloses film dynamic forming equipment which comprises a supporting mechanism, a heating mechanism and a pressure applying mechanism. The supporting mechanism comprises stand columns, a top plate, a bottom plate and a supporting plate. The heating mechanism comprises a heating plate arranged on the supporting plate and a forming plate stacked on the heating plate; the pressure applying mechanism comprises a jack and a rolling assembly which are arranged on the bottom plate; the rolling assembly is movably mounted at the bottom of the top plate through the moving assembly; the rolling assembly comprises a roller and a support used for assembling the roller and the moving assembly. The two ends of the roller are rotationally connected with the two ends of the support through rotating shafts. The invention also discloses a preparation method of the self-reinforced polyethylene film, and the self-reinforced polyethylene film is prepared by taking high-density polyethylene and ultra-high molecular weight polyethylene as raw materials through film dynamic forming equipment. The anisotropic structure can be constructed in the polyethylene film through the compression-shear coupling force field provided by the film dynamic forming equipment, and the polyethylene film is reinforced to the maximum extent.

The invention discloses a light warm-keeping high-strength fabric and a preparation method thereof, and relates to the technical field of fabric manufacturing. The light warm-keeping high-strength fabric is of a plain grid structure formed by interweaving warp yarn and weft yarn, and the warp yarn and the weft yarn are both obtained by compounding chinlon hollow yarn and ultra-high molecular weight polyethylene yarn. The preparation method of the light warm-keeping high-strength fabric comprises the following steps: performing sectional warping arrangement on the nylon hollow yarns and the ultra-high molecular weight polyethylene yarns, finishing into a warp beam, performing drafting and denting according to a tissue structure, selecting a heavy loom for weaving, and performing interweaving, deoiling, washing, dyeing and shaping according to a plain weave mode to obtain the light warm-keeping high-strength fabric.

The invention discloses a composite temperature-control drainage geotextile, and relates to the technical field of geosynthetic materials. The geotextile comprises a drainage layer which is of a three-dimensional water guide structure formed by biaxial warp knitting of special-shaped section wicking fiber bundles and polypropylene reinforced fiber bundles and used for efficient drainage; the reinforcing layer is of a grid structure which is formed by hot melting and bonding ultra-high molecular weight polyethylene fibers and has high tensile strength, and provides mechanical support; the heating layer is composed of carbon fiber heating wires which are arranged in parallel in a snakelike mode and electrically connected in series, and the heating layer is embedded in a quilting seam channel between the drainage layer and the reinforcing layer and can achieve active heating of soil; the temperature control module comprises a temperature sensor in the enhancement layer and a temperature control device connected with the heating layer in series, and the heating power can be dynamically adjusted according to a preset temperature threshold value. By means of the multi-layer composite structure and the intelligent temperature control system, effective integration of drainage, enhancement and active anti-freezing functions is achieved, and the engineering application performance of the geotechnical cloth in the cold environment is remarkably improved.

The invention belongs to the technical field of pipes, and particularly relates to an ultra-high molecular weight polyethylene pipe super-lubrication extrusion aid and a preparation method thereof. The extrusion aid consists of the following components in parts by mass: 5-11 parts of an internal lubricant, 4-10 parts of an external lubricant, 3-5 parts of a plasticizer, 12-25 parts of a filler and 0.5-2 parts of an antioxidant, the external lubricant is prepared by mixing organic silicon modified epoxy oleic acid triglyceride, erucic acid, zinc stearate and stearic acid according to the mass ratio of 100: (20-40): (10-25): (5-15). The ultra-lubricating extrusion aid for the ultra-high molecular weight polyethylene pipe prepared by the invention realizes stable extrusion of ultra-high molecular weight polyethylene under the conditions of low energy consumption, high yield and high quality.

The invention relates to the technical field of polyethylene fibers, in particular to an ultra-high molecular weight polyethylene fiber with good high temperature resistance and a preparation method and application of the ultra-high molecular weight polyethylene fiber with the good high temperature resistance. The organic-inorganic hybrid composite gel fiber is obtained; and immersing the organic-inorganic hybrid composite gel fiber in a mixed solution for extraction and deoiling, and carrying out drying, hot stretching and ultraviolet radiation treatment to prepare the high-temperature-resistant ultra-high molecular weight polyethylene fiber, the preparation method comprises the following steps: dispersing nano heat-insulating particles and an interface modifier into a solvent, and uniformly mixing to obtain a heat-insulating sizing agent; and coating the heat-insulating sizing agent on the surface of the prepared high-temperature-resistant ultra-high molecular weight polyethylene fiber to obtain the ultra-high molecular weight polyethylene fiber with good high-temperature resistance. Through synergistic modification of organic-inorganic hybrid spinning and chemical crosslinking, the problem that the high temperature resistance is difficult to improve in the prior art is solved.

The invention relates to an ultra-high molecular weight polyethylene / carbon nanotube electromagnetic shielding material injection molding method, and relates to the technical field of conductive polymer composites.The method comprises the following steps that S1, sufficient UHMWPE, linear polyethylene wax and CNT are taken to be dried, and dried UHMWPE, dried linear polyethylene wax and dried CNT are obtained; s2, mechanically blending the dried UHMWPE, the dried linear polyethylene wax and the dried CNT to obtain composite particles; and S3, carrying out injection molding on the composite particles to obtain the ultrahigh molecular weight polyethylene / carbon nanotube electromagnetic shielding material. The ultra-high molecular weight polyethylene / carbon nanotube electromagnetic shielding material is prepared in an injection molding mode, the production period is greatly shortened, the production efficiency is greatly improved, and the method is suitable for industrial production; and a workpiece with a complex geometric structure can be prepared through injection molding, and the application range of the UHMWPE / CNT electromagnetic shielding material can be greatly expanded.

The present application relates to a kind of through-hole type ultra-high molecular weight polyethylene fiber, its manufacturing method and its application.The manufacturing method of the through-hole type ultra-high molecular weight polyethylene fiber of the present application includes the following steps: 1) mix ultra-high molecular weight polyethylene, acid-soluble inorganic particles and solvent to prepare spinning solution, 2) extrude the spinning solution to form spinning stream, 3) remove at least a portion of the solvent from the spinning stream to obtain dry protofilament, 4) stretch the dry protofilament in two or more stages, and at the same time as the one or more stages of these stages are carried out, spray acid solution to the dry protofilament to dissolve the acid-soluble inorganic particles, obtain the through-hole type ultra-high molecular weight polyethylene fiber.The through-hole type ultra-high molecular weight polyethylene fiber of the present application can float on seawater and quickly absorb oil, solving the problem of fast diffusion and difficult collection of oil spill.

The invention provides a nylon composite material as well as a preparation method and application thereof, and belongs to the technical field of nylon composite materials. The nylon composite material comprises the following raw materials in parts by mass: 35-75.5 parts of nylon resin; 20 to 40 parts of glass fiber; 2-15 parts of a wear-resistant agent; 1 to 5 parts of silicone; 1-5 parts of a compatilizer; 0.5 to 1 part of an antioxidant; 0.5 to 1.5 parts of a lubricant; 0.5 to 1.5 parts of a coloring agent; the wear-resistant agent comprises more than one of ultra-high molecular weight polyethylene, a hyperbranched polymer, polytetrafluoroethylene and silicone oil. The nylon composite material is prepared by compounding the nylon resin, the glass fiber, the wear-resistant agent, the silicone, the compatilizer, the antioxidant, the lubricant and the coloring agent, so that the wear resistance and the melt strength of the nylon composite material are remarkably improved, meanwhile, the nylon composite material has excellent machinability and mechanical properties, the machinability and the dimensional precision of wear-resistant products can be improved, the service life of the wear-resistant products can be prolonged, and the processing efficiency can be improved.

This article is a transfer aid made substantially of hard plastic (e.g., ultra-high molecular weight polyethylene) and used to transfer a person (patient) from a bed or the like to a wheelchair (or seat), or vice versa. The transfer aid (10) comprises a floor plate body (11) having a longitudinal length of approximately 400 to 1000 mm and a thickness of approximately 4 to 10 mm. A buttocks interference prevention part (12) is provided in the center of one side of the floor plate body (11), and under-buttocks insertion parts (13) are provided on both ends. The buttocks interference prevention part (12) has a through-hole and a handle (12a), and is configured to be bendable via a recess (12b) between it and the floor plate body (11). In addition, notches (14) are formed between the main body (11) of the floor plate and both sides of the buttock interference prevention section (12) to the under-buttock insertion section (13), making it easier for the caregiver to hold the item and insert it under the buttocks of the person being transferred. Furthermore, hook holes (15) are provided on both ends of the main body (11) at positions on the center of gravity, improving convenience for storage and portability. A non-slip plate (16) can be provided on the back of the main body (11), thereby increasing stability during use. Reference rear view 1, showing the state in use, shows the main body (11) with two non-slip plates (16) attached, while reference rear view 2, showing the state in use, shows the main body (11) with one non-slip plate (16) attached. The reference perspective view and the reference front view show the buttock interference prevention portion (12) folded and flat with the floor plate body (11).

Process and products for producing a solution-spun multifilament yarn containing n filaments are provided, wherein an ultra-high molecular weight polyethylene (UHMWPE) solution containing UHMWPE polymer and a solvent for the UHMWPE polymer are spun through n spin-holes of a spin plate and drawn before, during or after removal of the solvent to thereby obtain the multifilament yarn containing n filaments, the yarn having a tenacity (Ten) as expressed in cN / dtex of Ten(cN / dtex)=f×n−0.05×dpf−0.15, wherein Ten is at least 39 cN / dtex, n is at least 25, f is a factor of at least 62.0 and dpf is the dtex per filament.