1089results about "Monocomponent polyolefin artificial filament" patented technology

The invention discloses an ultra-high molecular weight polyethylene fiber melt spinning method which comprises the following steps: step 1, mixing ultra-high molecular weight polyethylene resin with polyethylene wax and high-density polyethylene to form a composition; 2, melting the composition at a high temperature to form a melt, carrying out melt spinning, and carrying out nozzle stretching and air cooling to obtain nascent fibers; and step 3, carrying out hot stretching and heat setting on the nascent fiber to obtain the final ultra-high molecular weight polyethylene fiber. By adopting the technical scheme, the melt flowability of the ultra-high molecular weight polyethylene can be greatly improved by the high-density polyethylene and the polyethylene wax, so that the ultra-high molecular weight polyethylene resin can be smoothly subjected to melt spinning. Meanwhile, in the hot stretching process, the polyethylene wax can participate in the crystallization process of the ultra-high molecular weight polyethylene resin and the high-density polyethylene, and finally the mechanical property of the ultra-high molecular weight polyethylene fiber can be well maintained.

The invention belongs to the technical field of sole materials, and particularly discloses an anti-skid sole material and a preparation method thereof. The anti-skid sole material comprises a sole body, the sole body comprises an anti-skid layer and a rubber layer, and the anti-skid layer comprises the following raw material components in parts by weight; comprising 50-55 parts of polyurethane, 16-20 parts of a silicon carbide composite material, 10-14 parts of polyethylene composite fibers, 4-8 parts of a maleic anhydride grafted polyethylene octylene co-elastomer, 3-5 parts of a silane coupling agent, 1-2 parts of an antioxidant and 0.5-0.8 part of a lubricant. The anti-skid sole material prepared in the invention has excellent mechanical strength, skid resistance and wear resistance, and can provide protection for feet and prolong the service life of soles.

The invention belongs to the technical field of personal protection equipment, and particularly relates to a lightweight cut-resistant four-dimensional structure fabric based on high-performance composite fibers and a preparation method of the lightweight cut-resistant four-dimensional structure fabric. The structure is based on a high-performance composite fiber material and a nano silicon carbide embedding technology of high-performance polyethylene fibers, the hardness bottleneck of a single material is broken through, and multi-fiber compatibility is improved through cooperation of polyurethane fiber surface activation and polyurethane fiber anti-melting modification. The gradient twist core sheath yarn is a high-performance composite yarn, and the strength and the flexibility are balanced. In the aspect of the oversleeve fabric structure, a three-dimensional protection system comprising a honeycomb structure, a silica gel liner and a skin-friendly inner layer is adopted, so that the integration of multiple functions of hydrophobicity, fusion resistance and buffering of a light-weight cut-resistant material is realized. Under the EN 388 standard, 5-level cutting prevention can be achieved, a single high-performance polyethylene fiber cutting prevention oversleeve can only reach 3-4 levels, the weight of the composite fiber material is reduced by 40% compared with that of a full aramid fiber oversleeve, the thickness is reduced by 25%, and the composite fiber material can be suitable for complex scenes such as petroleum and electric power.

The invention relates to the technical field of fibers, and discloses an antistatic warm-keeping fiber and a preparation method thereof. The preparation method comprises the following steps: carrying out graft modification on a far infrared material graphene oxide through functionalized POSS, introducing the modified graphene oxide and an ionic liquid into polypropylene, carrying out melt grafting to prepare an antistatic polypropylene master batch, introducing the master batch into polypropylene slices for spinning, and carrying out a synergistic antistatic effect of an inorganic antistatic agent graphene and an organic antistatic agent ionic liquid to prepare a composite material. The prepared fiber has antistatic performance and far infrared heating performance, and meanwhile, the POSS structure with excellent thermal stability is introduced, so that the heat resistance of the fiber is further improved.

The invention discloses an easy-to-dye wear-resistant polypropylene fiber and a preparation method thereof.The polypropylene fiber is prepared from polypropylene and amino-modified polypropylene according to the mass ratio of 100: 10-20, the amino-modified polypropylene is obtained by reacting maleic anhydride grafted polypropylene serving as a precursor with polyethyleneimine, and the mass ratio of the maleic anhydride grafted polypropylene to the polyethyleneimine is 100: 10-20. The mass ratio of the maleic anhydride grafted polypropylene to the polyethyleneimine is 10: (0.8-1.3); the polypropylene fiber is prepared by melt spinning, cooling, oiling, drafting, curling and heat setting, the oiling adopts a diluent oil emulsion, and the diluent oil emulsion contains 1-3 wt% of water-soluble metal salt; the water-soluble metal salt is selected from zinc salt or copper salt. On the basis that the dyeing performance of the polypropylene fiber is improved, the good strength performance and wear resistance of the fiber can be kept.

The invention discloses an antibacterial non-woven fabric and a preparation process thereof, and belongs to the technical field of non-woven fabrics. Comprising the following raw materials in parts by weight: 60-70 parts of polypropylene resin, 10-20 parts of modified bamboo fibers, 5-8 parts of chitosan and 0.5-1.5 parts of an antioxidant. The chitosan and the bamboo fiber have certain antibacterial property, so that the antibacterial property of the non-woven fabric is improved; by modifying the bamboo fibers, the antibacterial performance of the non-woven fabric is remarkably improved, the compatibility of the bamboo fibers and a matrix is improved, meanwhile, micromolecular organic chains are grafted to the bamboo fibers, the migration resistance and seepage resistance of antibacterial components are remarkably improved, and the problems that according to a traditional coating method, falling is prone to occurring, and washing is not durable are solved; the bamboo fiber and the chitosan in the raw materials are natural and renewable materials and are environmentally friendly; in conclusion, the prepared non-woven fabric has stable and efficient antibacterial property, is environmentally friendly and has important application value in the technical field of non-woven fabrics.

The invention discloses a wear-resistant cable material and a preparation method thereof, and belongs to the technical field of cables. Comprising the following raw materials in parts by weight: 80-100 parts of polypropylene resin, 12-28 parts of modified nano silicon dioxide, 15-25 parts of glass fibers and 3-5 parts of a lubricant. The prepared cable material takes polypropylene as a matrix, so that the cable material is endowed with certain wear resistance and mechanical property; the added glass fiber can further enhance the mechanical property of the cable material; nano-silica is modified, compared with common nano-silica, the nano-silica has better compatibility with a polypropylene matrix, wear resistance, oxidation resistance, flame retardance and mechanical properties of the cable material can be greatly enhanced, and the cable material is long and stable in performance and not prone to falling off; therefore, the prepared cable material is excellent in mechanical property, stable and efficient in wear resistance, oxidation resistance and flame retardance and has important application value in the technical field of cables.

The invention discloses a high-strength modified polyethylene composite fiber and a preparation method thereof, and belongs to the technical field of fiber materials, carboxylated mesoporous silica microspheres are used as a matrix, the surface of the matrix is coated with a graphene sheet layer, then hydroxyethyl methylacrylate is grafted, functionalized graphene / mesoporous silica microspheres are obtained, the functionalized graphene / mesoporous silica microspheres are used as a filler, and the high-strength modified polyethylene composite fiber is prepared. When the polyethylene composite fiber is applied to a ship cable, the overall weight of the ship cable can be reduced, and relative slippage can be generated between graphene lamellas and mesoporous silica microspheres, so that stress is dispersed, and the strength of the polyethylene composite fiber is improved; a hydrophobic alkane long chain is introduced through esterification of the graphene / mesoporous silica microspheres and hydroxyethyl methylacrylate and graft modification of hydroxyethyl methylacrylate, so that the hydrophobic alkane long chain has good compatibility with white oil, and the microspheres are prevented from approaching and gathering by a steric hindrance effect, so that the hydrophobic alkane long chain is more uniformly and stably dispersed in the white oil.

The invention discloses a light-weight moisture-conducting functional fabric and a preparation method thereof, and relates to the technical field of textile, the light-weight moisture-conducting functional fabric comprises an inner layer and an outer layer, the inner layer is obtained by blending polyester fibers and nylon special-shaped section fibers, and the outer layer is obtained by blending modified polypropylene fibers and hollow polyester fibers; the modified polypropylene fiber is obtained by mixing polypropylene slices and modified jade powder, melting, spinning and stretching; the prepared fabric has the light weight characteristic and the one-way moisture guiding capacity, sweat can be rapidly discharged out of the body, dry and comfortable isolation between the skin and the outside is achieved, and multiple health protection functions such as lasting antibiosis, efficient ultraviolet resistance and contact cool feeling are organically integrated.

The invention relates to the technical field of spunbond non-woven fabric manufacturing, in particular to a low-cost recyclable spunbond non-woven fabric manufacturing method capable of replacing traditional kraft paper, and the method comprises the steps of raw material preparation, melt extrusion, spinning web forming, hot-press shaping, cooling and trimming, post-processing, coiling and forming and the like. Raw materials comprise polypropylene particles, degradable master batches and recycled spunbond non-woven fabric fragments, the recycled fragments are subjected to surface modification treatment, and the degradable master batches contain polylactic acid, a starch-based degradation agent and other components. The non-woven fabric is quantified to 80-120 g / m < 2 > by optimizing processes such as a barrier type screw, infrared preheating and laser trimming and cooperating with water-repellent and antistatic post-treatment, the mechanical properties such as tensile strength, tearing strength and folding resistance are superior to those of traditional kraft paper, the non-woven fabric can be recycled for at least three times, and the degradation period is controllable; the method realizes closed-loop utilization of raw materials, reduces cost and energy consumption, expands application in the fields of packaging, agriculture and the like, and has remarkable economic and environmental benefits.

The invention relates to the technical field of mask cloth, in particular to electret mask cloth and a preparation method thereof. The electret mask cloth provided by the invention comprises a mask cloth base material and an electret additive positioned on the surface of the mask cloth base material and in a network structure, the electret auxiliary agent comprises a nano dielectric material; the electret mask cloth is provided with static charges, and the electret mask cloth is dry mask cloth. The electret additive is loaded in the mask cloth base material to construct a mixed dielectric-polymer dipole complex, and charge storage and controlled instantaneous discharge are remarkably enhanced, so that pores are stimulated to open, and essence is driven to permeate more efficiently.

The invention relates to a preparation method of surface hydrophobic modified nano inorganic powder and functional fiber, and the preparation method of the modified nano inorganic powder comprises the following steps: firstly, carrying out heating reaction on nano inorganic powder and boric acid to obtain hydroxyl activated nano inorganic powder; and reacting the hydroxyl activated nano inorganic powder with long-carbon-chain alkanol to obtain the surface hydrophobic modified nano inorganic powder. The preparation method of the functional fiber comprises the following steps: carrying out melt blending extrusion on the surface hydrophobic modified nano inorganic powder, the polymer slices, the dispersing agent and the antioxidant to prepare functional master batches, and carrying out melt spinning to obtain the functional fiber. Compared with the prior art, the preparation method has the advantages that the problems of non-uniform dispersion and easiness in agglomeration of the nano inorganic powder in the organic polymer can be solved, so that the nano inorganic powder is uniformly dispersed in the fiber, and the comprehensive performance of the composite fiber is improved.

The invention discloses a fused electrostatic spinning polymer / molecular sieve blended composite fiber as well as a preparation method and application thereof. The melt electrostatic spinning polymer / molecular sieve blended composite fiber is prepared from the following raw materials in parts by weight: 25-90 parts of a thermoplastic polymer matrix, 5-75 parts of a molecular sieve, 1-10 parts of a compatibilizer and 0-5 parts of a conductive additive. According to the polymer / molecular sieve blended composite fiber material and the preparation technology, no solvent participates in the whole process, and the green manufacturing requirement is met. Moreover, in the fiber material, the molecular sieves can be uniformly distributed on the superfine polymer fibers, scanning electron microscope pictures show that the molecular sieves are uniformly embedded into the material, no aggregate larger than 10 microns exists, and the fiber material has a hierarchical pore structure, a high specific surface area and excellent mechanical properties. Therefore, the fiber material can be applied to the fields of air filtration, catalytic reaction, drying purification, adsorption separation and the like.

The present invention relates to the technical field of pavement materials, and particularly relates to a high-performance asphalt concrete pavement material and a preparation method thereof. The formula of the pavement material includes asphalt, high melt index SBS, fine aggregate, coarse aggregate, fly ash, water reducer, low-temperature anti-cracking agent and anti-freezing agent. Among them, the preparation method of the low-temperature anti-cracking agent includes stirring and melt spinning of homopolypropylene, nano-silicon carbide and low melt index SBS to obtain the low-temperature anti-cracking agent. By optimizing the ratio and adding specific components, the material has good low-temperature anti-cracking performance, anti-freezing performance and anti-stripping performance. The high-performance asphalt concrete pavement material provided by the present invention is expected to be applied to highway engineering and road construction fields in low-temperature regions.

The present invention relates to the technical field of polymer materials, and discloses ultra-high molecular weight polyethylene fiber and its preparation method and application. The preparation method of the ultra-high molecular weight polyethylene fiber comprises: step 1, swelling ultra-high molecular weight polyethylene, flame retardant and antioxidant in a solvent to obtain a swelling liquid; step 2, mixing, melting and extruding the swelling liquid in a twin-screw extruder to obtain a polymer melt; step 3, sending the polymer melt into a spinning tunnel for drawing to obtain ultra-high molecular weight polyethylene fiber; the feeding port temperature of the twin-screw extruder is 25-40°C, the temperature of the mixing and melting section is 80-180°C; the extrusion port temperature of the twin-screw extruder is 145-170°C; in the spinning tunnel, the spinning tunnel temperature is 75-140°C, and the air volume is 200-800N 3 / h; the drafting frequency of the drafting is 15-30. The ultra-high molecular weight polyethylene fiber provided by the invention has strong flame retardant, anti-aging and mechanical properties.

The invention discloses a high-toughness polypropylene staple fiber and a preparation method thereof, and relates to the technical field of functional polypropylene fibers. The high-toughness polypropylene short fiber is prepared from the following components in parts by mass: 70 to 85 parts of polypropylene resin, 10 to 20 parts of a polyolefin elastomer, 3 to 8 parts of maleic anhydride grafted polypropylene, 2 to 4 parts of a plasticizer, 1 to 3 parts of an antioxidant and 0.5 to 2 parts of a nucleating agent. By introducing the novel plasticizer with a specific structure, the entanglement resistance among polypropylene molecular chains is effectively reduced, and the molecular chains are easier to relatively slide when being stressed, so that fracture caused by stress concentration is avoided, and the stretching resistance and bending resistance of the fiber are remarkably improved.

The invention relates to the related field of composite fibers, in particular to a method for processing composite fibers by compounding polypropylene with silicon dioxide aerogel, which is characterized in that silicon dioxide aerogel powder is uniformly distributed on the surface layer of a polypropylene film through electrostatic adsorption, and film-split fibers are obtained through laminating, drafting, splitting and other processes; the polypropylene fiber and the silicon dioxide aerogel powder are well combined, the defect that the aerogel material cannot be flexibly processed is overcome, processing of the fibrous aerogel material is achieved, and the fiber product can be widely used for manufacturing protective clothing, thermal insulation materials, industrial cloth, filtering materials and the like.

The invention discloses a self-softening one-way moisture-conducting environment-friendly fabric and a preparation method thereof, and belongs to the technical field of fabric weaving, the front face of the fabric is made of surface yarn chinlon filaments and polyester yarns, the lining is made of polypropylene spandex core-spun yarns, and the fabric is woven through a single-side knitting machine structure and has the characteristics of self-softening and one-way moisture-conducting. Compared with the prior art, the fabric is soft and comfortable, has good moisture permeability and environmental protection property, and is suitable for the fields of outdoor sports, fitness, daily casual clothes and the like.

The invention discloses an ultra-strong anti-cutting graphene ultra-high molecular weight polyethylene fiber and a preparation method thereof. The method comprises the following steps: S1, dissolving modified graphene oxide powder, carbon fiber powder and a dispersant in a solvent to obtain a functional filler dispersion liquid; s2, uniformly dispersing ultra-high molecular weight polyethylene resin in a solvent in a blending manner to form a uniform resin dispersion liquid; s3, adding the functional filler dispersion liquid into the resin dispersion liquid, stirring and heating to obtain a spinning solution, swelling and extruding the spinning solution to form a molten state, and cooling to form gel filaments; and extracting and drafting the gel silk to obtain the gel silk. Wherein the weight ratio of the modified graphene oxide powder to the carbon fiber powder to the dispersing agent to the ultra-high molecular weight polyethylene resin is (1-3): (40-55): (0.4-0.8): 100.

The invention discloses a preparation method of a coarse-denier high-strength polyethylene fiber and a polyethylene fiber.The preparation method comprises the steps that a nano modifier is prepared, the nano modifier is hyperbranched polyethylene modified nano SiO2, and polyethylene powder, white oil, the nano modifier and an antioxidant 1010 are mixed to form a mixed solution; and extruding the mixed solution to form gel fibers, standing the gel fibers to obtain oil, and carrying out three-stage extraction with an ionic liquid, drying and stretching to form the polyethylene fibers. The nano modifier is adopted as a raw material of the polyethylene fiber and is hyperbranched modified nanoparticles, the dispersion uniformity of the nanoparticles can be ensured due to small volume steric hindrance of the nanoparticles, and long-chain alkyl outside the particles and a polyethylene molecular chain have very good compatibility; meanwhile, bidirectional permeation and diffusion of the extraction agent and the solvent are greatly promoted, the extraction process is accelerated, solvent residues can be reduced, and the mechanical property of the prepared fiber is effectively improved.

The invention relates to a flash evaporation material with a high transmission-reflection ratio, which is characterized in that the raw material of the flash evaporation material comprises polyethylene; the Frazier air permeability of the flash evaporation material is 0.45-0.85 m < 3 > / (min.m < 2 >); the transflective ratio of the flash evaporation material is 2-7m < 3 > / (min.m < 2 >. Mm), and the transflective ratio is equal to (Frazier air permeability. Reflectivity) / thickness. Through comprehensive regulation and control and balance of four groups of core parameters including the solvent ratio, the spinning parameters, the web forming speed and the hot rolling process, part of performance pain points in the prior art are solved, and the design requirement for the proper transflective ratio is met.

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 present invention relates to the field of fibers, and more particularly to a cooling polyethylene fiber and a preparation method thereof. The preparation method comprises the following steps: Step 1, preparing a modifier; Step 2, preparing a modified resin; and Step 3, melt spinning: the modified polyethylene resin is melted in a twin-screw extruder, and then extruded through a spinning machine to obtain the cooling polyethylene fiber. The present invention prepares a novel polyethylene fiber by melt spinning. A certain amount of modifier, a small amount of antioxidant, and a nucleating agent are added to the polyethylene fiber. The prepared polyethylene fiber not only has good cooling and hygroscopicity, making it more comfortable to wear, but also has enhanced strength and aging resistance.

Examples of a degassing method of removing a dissolved gas from a liquid and a gas exchange method of exchanging a dissolved gas in a liquid and a gas component in a gas phase include a method using a separation membrane. To provide a separation membrane having solvent resistance while maintaining high gas permeability using poly(4-methyl-1-pentene) excellent in solvent resistance and gas permeability. In order to achieve the object, there is provided a separation membrane containing poly(4-methyl-1-pentene) as a main component and including a surface layer and an inner layer, at least one surface layer having lamellar crystals, wherein micropores are provided on the surface layer having the lamellar crystals, an opening ratio is 0.1% to 10% when a ratio of the micropores to a membrane surface is taken as the opening ratio and the membrane surface is 100%, and an average pore size of the micropores is 3 nm to 30 nm.

The invention relates to a flash evaporation material with high transparent strength and a preparation method thereof, the flash evaporation material comprises the following raw materials: polyethylene with high transparent strength of 0.2-3 kN / m; the high-permeability strength is equal to the moisture permeability index * the longitudinal tensile strength; the test standard of the tensile strength is a constant-speed tensile method for testing the tensile strength of paper and paperboards according to GBT 12914-2018; the test standard of the moisture permeability index is GB / T 11048-2018 determination of thermal resistance and moisture resistance (evaporation hot plate method) under the physiological comfort steady state condition of the textile. The flash evaporation material disclosed by the invention has relatively good high-transmittance strength.

The invention relates to the technical field of polymer fibers, and in particular to an impact-resistant ultra-high molecular weight polyethylene fiber and a preparation method thereof. The invention introduces maleic anhydride for graft modification, and benzoyl peroxide as an initiator can promote the formation of free radicals, so that active sites are generated on the ultra-high molecular weight polyethylene chain. Maleic anhydride as a polar monomer can react with the active sites to form a graft chain, thereby introducing polar groups to enhance the interaction force between molecules, and improving the toughness and processing fluidity of the material to a certain extent. In addition, white oil, decalin and xylene as solvents are conducive to the expansion and dispersion of the ultra-high molecular weight polyethylene, so that the modification process is more uniform and efficient. The toughening polymer component in the invention is synthesized by chemical reaction to obtain a cross-linked network structure with multiple functional groups and a high molecular weight, so that the external impact force can be effectively absorbed and dispersed, and the impact resistance of the material can be significantly improved.

The invention discloses an ultra-high molecular weight polyethylene fiber waterproof membrane and a preparation method thereof, and belongs to the technical field of high polymer materials. Comprising the following steps: mixing ultra-high molecular weight polyethylene, modified master batch, an antioxidant, a lubricant, a light stabilizer, an ultraviolet light absorber, a coloring agent and a compatilizer, uniformly mixing, extruding and granulating by a twin-screw extruder to obtain mixture particles, dissolving the mixture particles in a solvent, and carrying out extrusion granulation by a twin-screw extruder to obtain the ultra-high molecular weight polyethylene composite material. The ultra-high molecular weight polyethylene fiber waterproof membrane is obtained after spinning and membrane spinning. Ammoniated cellulose nanocrystals and ammonium fluozirconate are grafted through an acid cross-linking agent and then serve as metal coordination nodes of the zirconium-based metal organic framework material, a Na-montmorillonite / graphene oxide / zirconium-based MOF material is prepared, the Na-montmorillonite / graphene oxide / zirconium-based MOF material is blended with polyethylene resin to prepare a modified master batch, the entanglement degree of an ultra-high molecular weight polyethylene molecular chain is reduced, the processability is improved, and the service life of the material is prolonged. Meanwhile, the wear resistance and the antibacterial property of the ultra-high molecular weight polyethylene film are improved.

The application discloses a light-weight moisture-conducting functional fabric and a preparation method thereof, and relates to the technical field of textiles.The light-weight moisture-conducting functional fabric comprises an inner layer and an outer layer, the inner layer is obtained by blending polyester fibers and nylon special-shaped cross-section fibers, and the outer layer is obtained by blending modified polypropylene fibers and hollow polyester fibers; the modified polypropylene fibers are obtained by melting and spinning the mixture of polypropylene chips and modified jade powder and then stretching; the prepared fabric not only has the characteristics of light weight and one-way moisture-conducting capability, can quickly discharge sweat outside the body, realizes dry and cool isolation between the skin and the outside world, and has multiple health protection functions such as persistent antibacterial property, efficient ultraviolet resistance and contact cool feeling.

An enhanced flash evaporation / electrospinning composite spinning equipment includes a flash spinning equipment, an electrospinning equipment, and a grounded receiving conveyor belt; the flash spinning equipment includes a flash spinning spinneret unit, the flash spinning spinneret unit includes a first spinneret, and the first spinneret is grounded; the electrospinning equipment includes a high-voltage power supply and an electrospinning spinneret unit, the electrospinning spinneret unit includes a second spinneret, and the second spinneret is connected to the high-voltage power supply; the first spinneret and the second spinneret are both located above the receiving conveyor belt at opposite positions with a distance of D, and the value range of D is 15-40 cm. The enhanced flash evaporation / electrospinning composite spinning equipment has a simple structure, and can prepare products that are not easy to delaminate, and excellent in waterproof performance and air permeability.

The invention discloses a high-strength polypropylene fiber short fiber for cool cloth and a preparation method of the high-strength polypropylene fiber short fiber, and relates to the technical field of polymer artificial filaments and analogues. The high-strength polypropylene short fiber is prepared from the following raw materials in parts by mass: 100 parts of polypropylene resin, 0.1-1 part of a nucleating agent, 0.2-0.8 part of an inorganic filler, 0.5-2 parts of a processing aid, 3-6 parts of a plasticizer, 1-5 parts of a lubricant and 0.5-2 parts of a weather-resistant flame retardant. Compared with the prior art that the polypropylene fiber short fiber is easy to age and fast in performance attenuation in a complex environment, the polypropylene fiber short fiber prepared by the invention has the advantages that the weather-resistant stability is obviously improved, and the performance reduction trend caused by aging after long-term use is obviously slowed down.