158 results about "Polyethylene matrix" patented technology

The invention relates to the technical field of degradable PE (polyethylene) packaging materials, and discloses a PE film, a preparation process and application in tissue packaging, and the PE film is prepared by the following steps: by taking 7-(diethylamino) coumarin-3-carboxylic acid, 2-naphthyl methanol and epoxy chloropropane as raw materials, carrying out esterification reaction and quaternization reaction to prepare an epoxidized biodegradable organic photosensitizer; based on an epoxy-hydroxyl ring-opening reaction mechanism, hydroxylated titanium dioxide nanoparticles and polyvinyl alcohol resin are respectively modified by using an epoxidized biodegradable organic photosensitizer, and compounding is performed based on a pi-pi accumulation effect between aromatic rings to prepare the ultraviolet light dependent photo-biodegradable component. According to the present invention, the ultraviolet light dependent light-biological degradation component, the compatible component and the composite auxiliary agent are added to the polyethylene matrix, and blow molding is performed to obtain the PE film, and the film product shows excellent light-biological dual degradation performance, has actual use value, and can be used in the tissue packaging field.

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 the technical field of insulating materials, and discloses a crosslinked polyethylene insulating material which comprises the following components: 40-50 parts of linear low-density polyethylene, 10-20 parts of low-density polyethylene, 3-8 parts of polypropylene resin, 2-3 parts of a silane coupling agent, 0.8-1.5 parts of an initiator and 0.9-1.5 parts of a polycyclic conjugated antioxidant, and further comprises a preparation method of the crosslinked polyethylene insulating material. Comprising the following steps: S1, compounding and pretreating a matrix material, namely mixing low-density polyethylene and linear low-density polyethylene, adding polypropylene resin, an antioxidant and a lubricant, premixing, and drying to form a polyethylene matrix; according to the invention, through a multi-component collaborative design concept, the cross-linked polyethylene insulating material has remarkable advantages in the aspect of electrical performance, and the long-acting stability of the insulating layer material is enhanced, so that the service life of the insulating layer material is prolonged.

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 provides a high-dispersity polyethylene primary color master batch and a preparation method thereof, and relates to the field of polyethylene primary color master batches. The high-dispersity polyethylene-based primary color master batch comprises 40-60% of high-density polyethylene, 20-40% of a heat-stable pigment, 10-20% of a dispersant and 5-10% of a compatible agent. By selecting the specific heat-stable pigment and combining the efficient dispersing agent, the stability of the pigment in the high-temperature processing process and the uniform dispersity of the pigment in a polyethylene matrix are effectively improved, so that the color consistency and quality of the color master batch at high temperature are ensured; according to the technical scheme, the mechanical property of the color master batch is enhanced, so that the color master batch is more suitable for high-speed injection molding processing, and the preparation method in the scheme comprises accurate ratio control and efficient mixing and extrusion processes, and particularly adopts an ultrasonic mixing technology and a double-screw extruder.

The invention discloses a high-strength waterproof polyethylene composite material and a preparation method thereof, and belongs to the technical field of high-molecular compound compositions, and the high-strength waterproof polyethylene composite material comprises the following raw materials by mass: 100-120 parts of high-density polyethylene, 20-30 parts of polypropylene resin, 1-3 parts of an antioxidant, 1-3 parts of a lubricant, and 1-3 parts of a lubricant. The material comprises, by weight, 1-1.2 parts of dicumyl peroxide, 8-10 parts of modified composite glass fibers, 2-3 parts of a stabilizer, 5-6 parts of a coupling agent and 0.3-0.4 part of an antioxidant. According to the high-strength waterproof polyethylene composite material prepared by the preparation method disclosed by the invention, the glass fibers are modified and then uniformly dispersed in a high-density polyethylene matrix, and the flame retardant is compounded with the glass fibers, so that the dispersity of the flame retardant in the high-density polyethylene matrix is improved, and the influence of flame retardant filler on the mechanical property of the polyethylene composite material is reduced; the strength and the flame retardant property of the high-strength waterproof polyethylene composite material are improved.

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 relates to the technical field of plastics, and discloses a polyolefin-based plastic particle and a production process thereof, the plastic particle is prepared by taking high density polyethylene as a base material and cooperating with linear low density polyethylene, a compatilizer, a functional agent and other auxiliary materials through mixing and extrusion granulation processes, wherein the functional agent is prepared by modifying a polymeric macromolecular nitrogen-phosphorus flame retardant on the surface of hydroxyapatite, and in the subsequent high-temperature melt extrusion process, the molecular chain of the polymeric macromolecular nitrogen-phosphorus flame retardant can extend to each region of a polyethylene matrix, so that the hydroxyapatite exists in the matrix in the form of a physical crosslinking point, and the flame retardance of the polyethylene matrix is improved. On one hand, the advantage of self inorganic enhancement can be efficiently played, the mechanical property of the material is improved, and on the other hand, the uniformly dispersed hydroxyapatite can also cooperate with the polymeric macromolecular nitrogen-phosphorus flame retardant, so that the flame retardant property of the material is effectively improved.

The invention relates to the technical field of high polymer materials, in particular to high-barrier modified polyethylene which comprises high-density polyethylene, vinyl silane, montmorillonite, alkali, an antioxidant, nano silicon dioxide, a polyolefin grafted compound, a plasticizer and a stabilizer. According to the invention, additives such as vinyl silane, modified montmorillonite and the like are introduced into high-density polyethylene, and an irradiation crosslinking process is adopted, so that the gas barrier property and the mechanical property of polyethylene are remarkably improved; through surface modification of the montmorillonite, the compatibility of the montmorillonite and a polyethylene matrix is improved, so that the polyethylene matrix is more uniform in microstructure, and the barrier effect is effectively enhanced; by adopting an irradiation crosslinking technology, not only is the barrier property of polyethylene improved, but also the heat resistance and the mechanical strength of the polyethylene are enhanced, so that the material can keep stable performance in a harsh environment; compared with a traditional modification method, the method has the advantages that the production process is simplified, and the dependence on chemical additives is reduced.

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 technical field of fiber reinforced composite materials, and provides a glass fiber prepreg tape and a preparation method and application thereof in a polyethylene pipeline, the glass fiber prepreg tape comprises the following raw materials by weight: 90-110 parts of a polyethylene matrix, 160-200 parts of modified glass fiber, 1-5 parts of a compatilizer, 0.5-5 parts of an antioxidant, and 0.2-1 part of a flame retardant. The glass fiber prepreg tape provided by the invention has good tensile strength and impact strength, and can be widely applied to polyethylene pipelines.

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.

The invention provides a flame-retardant polyethylene sheathed cable and production equipment thereof, and relates to the technical field of cable production, the cable comprises a conductor cable core, a flame-retardant polyethylene sheath containing a flame retardant is wrapped outside the conductor cable core, the flame retardant contains 60 parts of magnesium hydroxide on the basis of 100 parts of polyethylene matrix, a phase change heat conduction cavity is formed in the sheath and contains 20wt% of borax aqueous solution, and the phase change heat conduction cavity is communicated with the flame-retardant polyethylene sheath. The production equipment comprises an extrusion die head, an extrusion die core in the extrusion die head is formed by splicing six groups of split die cores, injection cavity channels are arranged among the die cores, one end of the extrusion die core is inserted into a heat conduction cavity forming die, and the other end of the extrusion die core is inserted into a heat conduction cavity forming die. According to the cable, the high temperature resistance and flame retardance are improved through the phase change heat management system, efficient production is achieved through equipment, and it is guaranteed that solution filling and structure forming are synchronous.

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 present invention relates to the technical field of polyethylene films, and discloses a preparation method of a high-strength polyethylene blown film. Metallocene polyethylene, maleic anhydride and octavinyl-POSS are used to initiate polymerization to obtain polyethylene grafted polyene POSS, which is subjected to epoxidation treatment to obtain polyethylene grafted epoxy POSS. Its structure consists of an inorganic cage-like nucleus formed by silicon oxygen, which has a rigid structure and steric hindrance effect, hinders the movement of polyethylene chain segments, can form nano-inorganic microphase regions, avoids a large amount of agglomeration of inorganic particles, and enables them to be evenly dispersed in the polyethylene matrix; PBAT itself has high toughness, belongs to polar molecules, has good moisture permeability, presents a two-phase separation state in the co-blown film, improves the water resistance of the polyethylene matrix, can selectively slow down the gas exchange between O2 and the outside world, avoids the condensation phenomenon in fruit and vegetable packaging, and has good biodegradability.

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.