129 results about "Polyethylene matrix" patented technology

The invention relates to a preparation method of a low-smoke halogen-free flame-retardant cable sheath material, and belongs to the technical field of cable materials. The cable sheath material is obtained by self-making a flame retardant and blending the flame retardant with polyethylene, a phosphorus-silicon-boron cross-linked network exists in the flame retardant, a protective layer is formed during combustion, the smoke amount is reduced while flame retardance is achieved, and low-smoke halogen-free flame retardance is achieved through phosphorus-silicon-boron synergy; according to the flame retardant disclosed by the invention, a phosphorus-oxygen group is connected with a silicon-oxygen group through a benzene ring, polarity mutation is buffered, and the flame retardant integrally presents low polarity, so that the compatibility between the flame retardant and a polyethylene matrix is enhanced, the flame retardant is more uniformly distributed in the matrix, the interface bonding is more excellent, and the mechanical property of the material is remarkably improved; and a long-chain siloxane coating structure in the flame retardant can form a water repellent layer on the surface of the material to achieve a hydrophobic effect, so that the dielectric property of the material is not influenced in a humid environment, and the stability and safety of power transmission are ensured.

The invention relates to the technical field of cables, and discloses a multilayer flame-retardant heat-conducting crosslinked polyethylene cable structure and a preparation process thereof. The product sequentially comprises a conductor layer, a heat-conducting flame-retardant buffer layer, a flame-retardant reinforced linkage layer and an outer sheath layer from inside to outside, wherein the heat-conducting flame-retardant buffer layer comprises a cross-linked polyethylene matrix, boron nitride, aluminum hydroxide and a shape memory polymer, and the outer surface of the heat-conducting flame-retardant buffer layer is provided with interlocking bulges with embedded heat-conducting microtubes; the flame-retardant reinforced linkage layer contains a cross-linked polyethylene matrix, expanded graphite and graphene, and a groove with a flame-retardant elastic piece is formed in the inner surface of the flame-retardant reinforced linkage layer. The preparation method comprises the following steps: firstly preparing the silver-plated conductor, then respectively preparing the heat-conducting flame-retardant buffer layer and the flame-retardant reinforced linkage layer, then aligning the two layers, carrying out hot-pressing compounding, carrying out irradiation crosslinking on the composite structure, and finally extruding and coating the outer sheath and carrying out cooling shaping. The product can be used in scenes of new energy power stations, data centers and the like, and has the advantages of synergism of flame retardance and heat conduction and long-term stability of an interlayer structure.

The invention relates to a wear-resistant waterproof cable sheath material and a preparation method thereof, and belongs to the technical field of cable materials. The cable sheath material is prepared by self-making a modifier and blending the modifier with a fumed silica modified filler modified by a perfluoroalkyl silane coupling agent, FEP and polyethylene. Perfluoroalkyl of the modified filler and FEP cooperate to improve the water resistance and corrosion resistance of the material; the modifier can enhance the polarity of a polyethylene matrix, forms polarity gradient matching with other components of the system, enhances the interfacial compatibility, and improves the mechanical properties of the material; a benzotriazole structure in the modifier can prevent the material from being damaged by ultraviolet irradiation; besides, during combustion, phosphorus in the material forms a carbon layer on the surface, nitrogen in benzotriazole serves as a foaming agent to expand the carbon layer, efficient flame retardance is achieved synergistically, the material has excellent ultraviolet resistance and flame retardance, and the service life of the material is prolonged.

The invention relates to the field of polyethylene composite materials, and discloses an impact-resistant high-density polyethylene composite material and a preparation method thereof.The impact-resistant high-density polyethylene composite material is prepared from, by weight, 60-70 parts of matrix resin, 5-11 parts of flexibilizer, 4-9 parts of inorganic filler, 1-3 parts of compatilizer, 0.5-1.5 parts of antioxidant and 2-4 parts of ultraviolet stabilizer, the matrix resin is high-density polyethylene with the molecular weight of 90,000-120,000, and the flexibilizer is a compatilizer. The flexibilizer is chlorinated polyethylene, the chlorine content is 25 + / -1 wt%, the inorganic filler is modified talcum powder, the D50 particle size is smaller than or equal to 3 microns, and the length-diameter ratio is larger than or equal to 10. The surface of the talcum powder is modified by gamma-aminopropyltriethoxysilane, and the length-diameter ratio of the particle size is controlled, so that the chemical bonding effect of the filler and a high-density polyethylene matrix is enhanced, the high-efficiency transmission and uniform dispersion of stress are facilitated, and the local stress concentration phenomenon under the impact load is effectively inhibited.

The invention relates to the technical field of cable production, and discloses a new energy charging heat-conducting flame-retardant cable which sequentially comprises a conductor layer, a heat-conducting insulating layer, a self-healing layer, a shielding layer, a mechanical enhancement layer and a flame-retardant outer sheath layer from inside to outside. The conductor layer is formed by a plurality of stranded tin-plated copper wires or nickel-plated copper wires; the heat-conducting insulating layer is composed of a crosslinked polyethylene matrix, a two-dimensional heat-conducting filler and phase-change temperature-adjusting microcapsules, the two-dimensional heat-conducting filler comprises a mixture of boron nitride nanosheets oriented by an electric field and graphene, and the mass fraction of the filler is 40%-55%; a core material of the phase-change temperature-adjusting microcapsule is a compound of paraffin and stearic acid. According to the scheme, trace rare earth and silver elements are introduced into the conductor to form a Cu-Ag-RE solid solution structure, so that the crystal integrity and the oxidation resistance of the conductor are remarkably improved; the structure still keeps excellent conductivity and bending resistance at high temperature, so that the cable can stably operate for a long time in a high-temperature and strong ultraviolet environment during charging, and the conductivity efficiency is improved.

The invention provides a thermosensitive color-changing crosslinked polyethylene pipe and a preparation method thereof. The thermochromic crosslinked polyethylene pipe comprises the following components in parts by weight: 100 parts of polyethylene, 30-50 parts of epoxidized soybean oil, 0.5-2 parts of nano titanium dioxide, 3-8 parts of a compatilizer, 1.5-5 parts of a thermochromic pigment, 0.5-1.2 parts of an antioxidant and 0-3 parts of a functional additive, the cross-linking degree of the thermosensitive color-changing cross-linked polyethylene pipe is reduced from inside to outside in a gradient mode. By adding epoxidized soybean oil as a dispersing agent into a polyethylene matrix and performing interface modification through nano titanium dioxide, under the combined action, the interfacial tension between the pigment and the polyethylene matrix is reduced, the dispersing performance of the pigment in the polyethylene matrix is improved, and the heat sensitivity and mechanical strength of the crosslinked polyethylene pipe are remarkably improved; and gradient cross-linking distribution is further combined, so that the bursting pressure of the cross-linked polyethylene pipe is further improved.

The invention relates to the field of power cable materials, in particular to an ultrahigh-voltage cable insulating material, a preparation method thereof and a cable. The ultrahigh-voltage cable insulating material is prepared from the following raw materials in parts by mass: 80 to 100 parts of polyethylene, 1 to 5 parts of a cross-linking agent, 0.5 to 1 part of a compatilizer and 0.1 to 1 part of an organic molecular semiconductor. According to the ultrahigh-voltage cable insulating material, the organic molecule semiconductor with high electron affinity is introduced into the polyethylene matrix, and free electrons are attracted and fixed through strong static electricity of the organic molecule semiconductor, so that injection, migration and accumulation processes of charges in the cable insulating material are blocked; the problem of space charge accumulation of a cable insulating material in a high-voltage environment is solved from the source, and the insulativity and the long-term operation reliability of the cable insulating material are effectively improved.

This invention relates to a method for preparing a low-smoke, halogen-free flame-retardant cable sheath material, belonging to the field of cable material technology. The invention involves preparing a flame retardant and blending it with polyethylene to obtain the cable sheath material. The phosphorus-silicon-boron cross-linked network present in the flame retardant forms a protective layer during combustion, reducing smoke emission while providing flame retardancy. Low-smoke, halogen-free flame retardancy is achieved through the synergistic effect of phosphorus-silicon-boron. The flame retardant connects phosphorus-oxygen groups and silicon-oxygen groups via benzene rings, buffering polarity abrupt changes. Furthermore, the flame retardant exhibits low polarity overall, enhancing its compatibility with the polyethylene matrix, resulting in a more uniform distribution of the flame retardant within the matrix, superior interfacial bonding, and significantly improved mechanical properties. The long-chain siloxane coating structure in the flame retardant forms a water-repellent layer on the material surface, providing a hydrophobic effect and ensuring that the dielectric properties of the material are not affected in humid environments, thus guaranteeing the stability and safety of power transmission.

The invention relates to the technical field of preparation of composite PE (polyethylene) films, and discloses a printing composite PE film for a sanitary bag, which comprises 94.0-99.0 parts by mass of polyethylene matrix resin; 0.5 to 5.0 parts by mass of hyperbranched polyolefin; 0.1 to 0.5 part by mass of polyethylene wax; 0.1 to 0.3 part by mass of a composite antioxidant; the preparation method comprises the following steps: synthesizing the functionalized hyperbranched polyolefin, and mixing the polyethylene resin and the additive; extruding, blending and granulating by using double screws; carrying out multi-layer co-extrusion film blowing molding; controlling air temperature to cool the film bubbles; and adjusting the tension and rolling to form the film. The hyperbranched polyolefin with a specific terminal functional group is introduced into the polyethylene matrix resin, and the hyperbranched polyolefin is promoted to migrate to the surface of the film in the melting processing process, so that a stable interface layer with relatively high surface energy is formed, and the adhesion fastness and the composite peel strength of the ink are improved.

The application relates to the technical field of cables, and discloses an insulated high-voltage power cable and a preparation method thereof. The insulated high-voltage power cable comprises a conductor, a crosslinked polyethylene insulation layer, a shielding layer, a semi-conductive water-blocking tape, an anticorrosion layer, a sheath layer and the like. Polyethylene, modified boron nitride, dicumyl peroxide and an antioxidant are mixed, extruded through a screw extruder, granulated, and the crosslinked polyethylene insulation layer is obtained. The compatibility of the modified boron nitride with the polyethylene is improved, the bonding force is improved, the modified boron nitride can be more uniformly dispersed in the polyethylene matrix, the mechanical properties and the thermal conductivity of the polyethylene insulation layer are improved, the breakdown field strength of the polyethylene insulation layer is increased, the high-voltage resistance of the polyethylene insulation layer is improved, and the polyethylene insulation layer can be better applied to high-insulation high-voltage power cable materials.

The application relates to an engine wire harness with good shielding performance and a preparation method thereof, and belongs to the technical field of new energy vehicles; a compatilizer is prepared, the compatilizer is a polyphenyl ether-polyethylene graft copolymer, the polyphenyl ether chain segment in the molecular structure is compatible with polyphenyl ether, and the polyethylene chain segment is compatible with high-density polyethylene; the structure can significantly reduce the interfacial tension between the polyphenyl ether / high-density polyethylene two phases, greatly enhance the interfacial adhesion, effectively inhibit phase separation and interfacial peeling, effectively improve the mechanical properties of the material, in addition, the compatilizer does not need to introduce a new resin component, potential influences of external components on the properties of the matrix are avoided, and the inherent properties of the polyphenyl ether and high-density polyethylene matrix resins can be better reserved.

The invention provides a high-thermal-conductivity polyethylene pipe master batch and a preparation method thereof. The master batch comprises polyethylene powder particles, a copolymer elastomer, surface-modified graphene, multi-walled carbon nanotubes and a processing aid. The raw materials are blended in two steps by adopting a solution-melting method, so that the heat-conducting filler is selectively and uniformly dispersed in a polyethylene matrix, and the percolation threshold value is effectively reduced. The two heat-conducting fillers with different shapes are compounded for use, so that a three-dimensional, efficient and stable heat-conducting network can be constructed, and rapid transportation of heat in the three-dimensional direction is realized. The copolymer elastomer is used as a stress concentration point to initiate crazing and a shear band, so that a large amount of impact energy is absorbed, and the effect of toughening polyethylene is achieved.

This invention relates to a composite mineral-modified polyethylene agricultural mulch film and its preparation method. The agricultural mulch film comprises a polyethylene matrix resin and a composite mineral filler dispersed therein. The composite mineral filler is composed of 27%~33% wollastonite, 18%~22% attapulgite, 27%~33% tourmaline, and 18%~22% hexagonalite, and undergoes electromagnetic oscillation physical activation treatment to achieve a specific surface area ≥250m² / g, a particle size ≤2μm, and the formation of hydroxyl active sites on the surface. This invention also discloses the preparation method and its dual functions of degradation and soil improvement. The agricultural mulch film has a tensile strength ≥18MPa, an elongation at break ≥400%, a biodegradation rate ≥70% after 6 months, a far-infrared emissivity ≥0.90, and a negative ion release ≥1200 ions / cm³. After 6~9 months of field use, it disintegrates, and the residual minerals continuously regulate soil pH, release trace elements, and improve the aggregate structure, achieving a virtuous cycle of mulch film degradation and soil improvement.

The application discloses a manufacturing method, product and application of an alloyed high-barrier polyethylene / polyamide film material, and belongs to the technical field of high-barrier film. The manufacturing method comprises the following steps: melt blending and extruding granulation are performed on a polyethylene / polyamide raw material mixture precursor, and then, after the polyethylene / polyamide mixture master batch obtained through the granulation is preheated to 180-200 DEG C, pulse high-pressure mold forming and cooling are performed, so that the alloyed high-barrier polyethylene / polyamide film material is obtained. The manufacturing method can make the polyamide phase uniformly dispersed in the polyethylene matrix phase and transformed from a spherical dispersion state into a lamellar dispersion state, so that a "barrier wall effect" is formed in the polyethylene / polyamide film material, and the gas barrier property of the polyethylene / polyamide film material is effectively improved.

The invention relates to the technical field of foam materials, in particular to a modified polyethylene foam material and a preparation method thereof, and the modified polyethylene foam material comprises the following components: a polyethylene matrix, modified silicon dioxide aerogel, LDH-polyethylene-maleic anhydride, hydroxyapatite-stearic acid, a foaming agent, a cross-linking agent and an antioxidant. When a fire disaster occurs, LDH is heated and decomposed to form a first protective barrier, molten polyethylene liquid is prevented from permeating into pores, and redundant H < + > in a system is consumed by decomposed alkaline oxide. The phosphoaluminate inorganic network and an organic polymer generated by catalysis of ZnCl2 / FeCl3 form an organic-inorganic hybrid blocking layer, so that a second protective barrier is formed, pore gaps are flexibly filled with the organic layer, and the inorganic layer provides high-temperature stability. The stearic acid is preferentially coordinated with ZnCl2 / FeCl3 acid and is stable at the processing temperature of the foaming agent, so that the stearic acid cannot act with the foaming agent and a PE chain, and the foaming quality is guaranteed.

The invention discloses a microcapsule fragrance waist-protecting sitting posture chair and a preparation method thereof, and belongs to the field of functional furniture manufacturing, and the preparation method comprises the following steps: selecting a proper essence formula as a core material, adopting melamine resin or polyurea resin as a wall material, and preparing an essence microcapsule with high thermal stability through an in-situ polymerization method; carrying out melt blending granulation on the microcapsules, matrix resins such as polypropylene, polyethylene and the like and auxiliaries through a double-screw extruder to prepare aromatic master batches; mixing the aromatic master batch with common plastic particles in proportion, and processing the mixture into a hard part of the seat cushion through an injection molding machine; and finally, carrying out post-treatment, assembly and quality detection on the injection molded part, and packaging a finished product. The problems that essence in traditional perfumed plastic is easy to volatilize, high-temperature-resistant processing is not achieved, and the fragrance holding time is short are solved, the prepared waist-protecting sitting posture chair has the advantages of being lasting and stable in fragrance and excellent in slow release performance, the fragrance holding period can reach two years or above, and meanwhile the mechanical property and the processing property of a plastic base body are kept.

The invention relates to the technical field of functional filler, and discloses a crosslinked polyethylene fireproof cable and a preparation method thereof.The preparation method comprises the steps that a polyethylene matrix is added into a first feeding opening of an extruder; a silane coupling agent is added from a downstream second feeding port to homogenize and disperse the silane coupling agent in the matrix; an inorganic flame-retardant filler is added into a downstream third feeding port for in-situ grafting; by adopting the feeding time sequence, before the inorganic flame-retardant filler is added, the silane coupling agent is homogenized and dispersed in the low-viscosity polyethylene matrix in advance, so that the problem of low grafting efficiency caused by limited physical diffusion in the conventional process is solved, and the grafting efficiency is improved. The formation of chemical bonding on the surface of the filler is ensured, and the filler and a subsequent matrix cross-linking reaction generate synergy.

This invention relates to the field of antibacterial composite sphere preparation, and particularly to a graphene antibacterial composite sphere and its preparation method, comprising: high-speed dispersion of modified silver-loaded zeolite, graphene oxide, polyvinylpyrrolidone-block-polyacrylic acid, hydroxypropyl methylcellulose, and ascorbic acid; calculating dispersion state indices based on real-time monitored resistivity and particle size; dynamically adjusting the rotation speed to suppress shear damage; normalizing the dispersion state indices to parameter adjustment parameters of 1-10 to determine the screw speed and temperature setpoint of the twin-screw extruder; and real-time monitoring of 1710 cm⁻¹ during the extrusion process. ‑1 The drift of characteristic absorption peaks is dynamically compensated for by interfacial thermal degradation, and finally injection molding is performed. This invention achieves fine and stable dispersion and composite of graphene and silver-loaded zeolite in a polyethylene matrix through multi-level intelligent control, solving the problems of easy agglomeration of functional phases, easy degradation during processing, and poor batch consistency caused by rough process control in the prior art.

The application belongs to the technical field of composite materials, and particularly relates to a wear-resistant and deformation-resistant modified polyethylene composite material for a carrier roller and a preparation method thereof; the wear-resistant and deformation-resistant modified polyethylene composite material for the carrier roller comprises the following raw materials in parts by weight: 50-60 parts of HDPE, 20-30 parts of UHMWPE, 12-20 parts of a reinforcing filler, and 3-5 parts of PE-g-MAH; SCPP and MoS2 in the reinforcing filler form a core-shell structure through electrostatic adsorption, SCPP provides deformation resistance support for the composite material by virtue of its inorganic rigid skeleton, and the problem that the polyethylene matrix is easy to bend is solved; MoS2 is tightly coated on the surface of SCPP, the friction coefficient is reduced, and the agglomeration of MoS2 when added alone is avoided; PE-g-MAH forms chemical bonding with the hydroxyl groups on the surface of SCPP and the oxygen-containing groups on the edge of MoS2, the interfacial bonding force between the core-shell filler and the non-polar polyethylene matrix is significantly improved, and the interfacial defects are reduced.

The invention provides a fragrance-carrying product. The fragrance-carrying product comprises a matrix skeleton formed by amphipathic modified ultra-high molecular weight polyethylene; the short fiber reinforced phase is uniformly dispersed in the matrix; the silver-loaded bacteriostatic agent is loaded in the material; a three-dimensional communicated pore channel structure is formed through a phase inversion method; polyvinylidene fluoride polymer coatings are distributed on the surfaces of the pore channels; through the modification of the amphiphilic modified ultra-high molecular weight polyethylene matrix, the design of the fiber reinforced phase and the multi-stage cooperation of the functional coating, the fragrance-carrying product has the advantages of high porosity, small pore size distribution, high impregnation amount, long-acting perfume release effective life and the like, and a solution capable of being industrially popularized is provided for the high-performance slow-release fragrance-carrying product.

The application belongs to the technical field of high polymer materials, and relates to a barrier pipe shoulder modification material, a barrier pipe shoulder and a preparation method thereof.The barrier pipe shoulder modification material comprises a polyethylene matrix, organic modified montmorillonite, high-density polyethylene and a compatibilizer in specific proportions, and the polyethylene matrix is low-density polyethylene and / or linear low-density polyethylene;the polyethylene matrix is subjected to double barrier modification by selecting organic modified montmorillonite and high-density polyethylene for matching, and the compatibilizer is used as an auxiliary, so that the finally obtained pipe shoulder modification material has excellent barrier performance;after the pipe shoulder injection molding raw material is mixed to form a pipe shoulder, the obtained pipe shoulder has excellent oxygen barrier performance, water barrier performance and mechanical performance.

This invention relates to a corrosion-resistant carbon-based composite material and its preparation method, belonging to the technical field of carbon-based composite materials. The invention involves creating a self-made modifier, then using this modifier and oxalic acid to dope aniline to obtain doped polyaniline. The doped polyaniline is then blended with high-density polyethylene and carbon nanotubes to obtain the corrosion-resistant carbon-based composite material. The phosphate ester groups in the modifier not only provide flame retardancy but also form complexes with the metal wire core. Together with the hydrophobic protective layer formed by the long-chain alkyl groups, they block the intrusion of water molecules and chemical media, giving the material excellent corrosion resistance. Furthermore, the aromatic heterocyclic structure in the modifier improves the overall heat resistance of the material and, in combination with the long-chain alkyl groups, ensures uniform dispersion of polyaniline and carbon nanotubes in the polyethylene matrix, enhancing the interfacial bonding between the three components, thereby improving the overall electrical conductivity and corrosion resistance of the material.

The invention relates to the technical field of PE pipes, in particular to an anti-aging high-toughness PE pipe and a preparation method thereof.The anti-aging high-toughness PE pipe is prepared from, by weight, 40-60 parts of high-density polyethylene, 20-30 parts of linear low-density polyethylene, 8-15 parts of an additive, 5-10 parts of a functional additive, 0.5-1.2 parts of calcium stearate and 0.3-0.8 part of a composite antioxidant B900. The functional additive is prepared by mixing tannic acid, nano silicon dioxide, neutral protease and horse radish peroxidase for reaction under an acidic condition and carrying out heating curing, centrifugal separation, drying and crushing processes, so that the problem that a common PE pipe is easy to age and embrittle in an outdoor environment is solved, the service life of the pipe is prolonged, and the service life of the pipe is prolonged. Active groups generated by enzymatic reaction in the functional auxiliary agent enhance the interfacial compatibility of the filler and a polyethylene matrix, so that long-term stable use of the filler in a complex environment is guaranteed.

The invention relates to the technical field of polyethylene materials, in particular to a high-barrier ultrathin toughened PE cast film and a preparation process thereof. The problem that in the prior art, the mechanical property and the barrier property of the PE cast film cannot be considered at the same time is solved. According to the invention, a nano blending filler composed of organic modified montmorillonite and graphene oxide, a composite compatilizer (maleic anhydride grafted polyethylene and maleic anhydride grafted POE elastomer), EVOH and an ultraviolet absorbent are introduced into a polyethylene matrix; a step-by-step melt extrusion process is adopted, matrix resin is added into a main feeding port, heat-sensitive filler, EVOH and an ultraviolet absorbent are synchronously added into a side feeding port, and corona and aging post-treatment are combined to obtain a PE cast film; the problem of compatibility among the components is effectively solved, a multi-scale collaborative network structure is formed, and balanced improvement of mechanical performance, barrier performance and weather resistance is achieved.

The present invention provides an ultra-high molecular weight polyethylene heavy-duty lubricating material and a preparation method thereof. The ultra-high molecular weight polyethylene is used as a polymer matrix, polyaryletherketone is used as a main reinforcing filler, and a small amount of reinforcing is used as a modified component. The material is prepared through mechanical blending, sintering molding, pressing and shaping, and trimming processing. The present invention utilizes the rigid skeleton structure of polyaryletherketone itself to improve the bearing capacity of the ultra-high molecular weight polyethylene matrix while maintaining its elongation and toughness unaffected; combines a small amount of inorganic reinforcing filler to further improve its bearing capacity; combines a secondary pressing and shaping process to further improve the density of the molded material, improve the bearing capacity of the composite material, meet the service requirements of high-load friction conditions, and is mainly used to manufacture lubricating materials for service under heavy-load conditions such as ship decks and bridge bearings. It belongs to the field of supporting structure materials or lubricating materials.

The present invention relates to the technical field of polymer materials, and discloses a method for preparing a multifunctional polyethylene pipe for a plastic-lined composite pipe. The polyethylene pipe comprises the following raw materials: high-density polyethylene, boron nitride reinforcement, composite antibacterial additive, cross-linking agent, antioxidant, and lubricant. High-density polyethylene is used as a matrix material, and by adding the boron nitride reinforcement, the interaction and bonding force with the polyethylene matrix are enhanced, external impact energy is absorbed and dispersed, crack propagation is hindered, and the mechanical properties and toughness of the polyethylene pipe are improved. By adding the composite antibacterial additive, the antibacterial property of the polyethylene pipe is improved. Only a small amount of the composite antibacterial additive is needed to exhibit excellent antibacterial property, effectively preventing bacteria from adhering to the surface of the pipe material to cause corrosion, thereby extending the service life of the polyethylene pipe.

The invention relates to a preparation method of a PE anti-fogging master batch composition, and relates to the technical field of preparation of high polymer material functional assistants, and the master batch comprises polyethylene matrix resin, a compound anti-fogging agent, a porous adsorption carrier and a microcapsule end-capping reagent. The preparation method adopts the processes of adsorption, end sealing and dispersion, and comprises the following steps: firstly, adsorbing the liquid compound anti-fogging agent into pores of the porous carrier in vacuum, then heating to melt the microcapsule end sealing agent and quenching, constructing a high-crystallinity coating layer on the surface of the carrier in situ, and finally mixing and granulating with the matrix resin. The problems of processing slip and master batch adhesion caused by easy precipitation of a liquid auxiliary agent under high filling amount are solved through the microcapsule structure, controlled release of the antifogging agent is realized by utilizing the physical barrier effect of the end-capping layer, the fast-acting property and the long-acting property of the film are considered, the optical performance of the agricultural film is improved, and the service life of the agricultural film is prolonged.

The invention discloses a mining fiber-reinforced ultra-high molecular weight polyethylene composite material which comprises the following components in parts by weight: 100 parts of ultra-high molecular weight polyethylene, 30-50 parts of modified fibers, 5-20 parts of a flame retardant and 1-10 parts of an antistatic agent, the preparation method of the composite material comprises the following steps: 1, carrying out surface modification treatment on fibers by adopting a surface modifier to obtain modified fibers; 2, blending the modified fibers with a flame retardant, an antistatic agent and ultra-high molecular weight polyethylene to obtain a uniform mixture; and 3, carrying out hot pressing treatment on the uniform mixture. According to the polyethylene composite material disclosed by the invention, the flame retardant and the antistatic agent are introduced, and meanwhile, the dispersity of the polyethylene composite material in an ultra-high molecular weight polyethylene matrix is improved by introducing the modified fibers, so that the interface action of the flame retardant and the antistatic agent is enhanced, and the polyethylene composite material has flame-retardant and antistatic properties and excellent mechanical strength; the preparation method disclosed by the invention is simple and efficient, is easy to realize batch production, and is suitable for underground equipment such as a coal mine scraper conveyer and a coal chute.

The invention discloses a high-dispersity carbon black reinforced polyethylene sheath material and a preparation process, and relates to the technical field of high polymer materials, the high-dispersity carbon black reinforced polyethylene sheath material comprises the following components by mass fraction: a polyethylene matrix, a synergistic reinforced phase, a bifunctional bridged molecular system, a dynamic interface regulation and control system, an omnibearing protection system and an efficient processing aid. According to the preparation method, nano-scale uniform dispersion of the carbon black is realized through the design of a synergistic reinforced phase and the action of a difunctional bridged molecular system, and the particle size of the carbon black can be controlled within 50 nanometers. The carbon black and the amino-modified multi-walled carbon nanotubes form a point-line synergistic enhanced conductive network, so that the problems that single carbon black is easy to agglomerate and a conductive path is discontinuous are solved, the conductive percolation threshold is reduced, the volume resistivity of the material can be stably controlled within a target range, and meanwhile, the long-term stability of the conductive performance is improved.