93 results about "Spherulite" patented technology

Disclosed in the present invention are a high-strength polylactic acid material, a preparation method therefor, and use thereof, belonging to the technical field of macromolecular materials. The high-strength polylactic acid material comprises the following components in parts by weight: 80-90 parts of polylactic acid, 10-20 parts of polybutylene adipate terephthalate, 1-5 parts of a nucleating agent, and 2-5 parts of a compatibilizing agent. The mesh number of the nucleating agent is 1500-2500 mesh; the compatibilizing agent is polycaprolactone, and the intrinsic viscosity thereof is 1.0-3.0 dL / g. The present invention lowers the melting temperature and shortens the melting time of PLA and PBAT, reduces the negative impact of polymer degradation and aging on mechanical properties, produces a heterogeneous nucleation effect, and performs the function of a crystallization nucleus in the cooling crystallization stage, improving crystallization speed and crystallinity, while causing the crystalline phase structure to tend toward a spherulitic state, improving the tensile strength of the polylactic acid material.

To provide a fixing device that achieves both wear resistance and chemical crack durability.SOLUTION: A fixing device has: a fixing film that has an endless shape; a pressure member that is arranged opposite to the fixing film and forms a nip with the fixing film; and a heating member that is arranged inside the fixing film, has a facing surface that faces an inner peripheral surface of the fixing film, and urges the fixing film against the pressure member. Fluorine grease is interposed between the inner peripheral surface and the facing surface. The fixing film has at least a base layer, an elastic layer, and a surface layer in this order. The surface layer includes a PFA. The surface layer includes a plurality of spherulites of the PFA. In an endothermic curve when measurement is performed with a predetermined condition by using a DSC, with a sample sampled from the surface layer as a measurement sample, an endothermic quantity in a temperature increasing process is 21 J / g or more.SELECTED DRAWING: Figure 3

The invention discloses a silicon dioxide reinforced high-hydrophobicity polyvinylidene fluoride membrane as well as a preparation method and application thereof, SiO2 nanoparticles are taken as a mechanical reinforcing agent and a structure regulator and are directly added into a membrane casting solution system, and solid-liquid phase separation is preliminarily induced on the surface of a primary membrane in combination with non-solvent spraying ethanol, so that the high-hydrophobicity PVDF membrane is successfully prepared. A unique multi-stage micro-nano structure consisting of mutually connected spherocrystals is constructed on the surface of the membrane, the hydrophobicity, aperture, porosity and mechanical property of the membrane are effectively improved, and the membrane shows excellent and stable separation performance in performance tests of seawater desalination and erythritol concentration, and has good application prospects in seawater desalination and erythritol concentration. The method shows huge application potential in the fields of wastewater treatment, food production and the like.

A fixing apparatus comprising: a fixing film having an endless shape, a pressurizing member disposed to face the fixing film and configured to form a nip with the fixing film, and a heating member disposed inside of the fixing film, having a facing surface facing an inner circumferential surface of the fixing film, and configured to bias the fixing film against the pressurizing member, and a fluorine grease interposed between the inner circumferential surface and the facing surface, wherein the fixing film has at least a base layer, an elastic layer, and a surface layer in this order, the surface layer comprises a PFA, the surface layer comprises a plurality of spherulites of the PFA, and in an endothermic curve measured with a specific condition by a DSC, using a sample sampled from the surface layer, an endothermic quantity in a temperature rising process is 21 J / g or more.

The composite copper foil comprises a supporting layer, a metal layer is arranged on the surface of the supporting layer, the supporting layer is provided with crystals, the crystal form of the crystals of the supporting layer is spherocrystal, the average particle size of the crystals of the supporting layer is larger than that of the metal layer, and the average particle size of the crystals of the supporting layer is larger than that of the metal layer. And copper metal or copper alloy is arranged in the metal layer. The metal layer can be in bonding contact with the spherocrystal of the supporting layer through a plurality of nanoscale particles, the acting force between particle molecules of the metal layer and molecules of the supporting layer is increased, the bonding strength can be improved, and therefore the bonding force between the metal layer and the supporting layer can be improved; meanwhile, the contact among metal layer particle molecules is increased, the overall sheet resistance of the metal layer is reduced, the flow conductivity of the metal layer is improved, the tensile strength of the metal layer is improved due to the fact that the contact among the metal layer molecules is large, and the composite copper foil is not prone to being stretched and damaged in the follow-up processing link.

Provided is an aromatic polyether in which the radical concentration measured using TEMPOL as a standard substance and benzene as a solvent for the standard substance is 6.5×1015 spin / g or more at 25 °C, and the diameter of spherulites is 0.001-30 μm.

The invention provides a molecular perovskite energetic material spherocrystal and a preparation method thereof, and belongs to the technical field of energetic material preparation. On one hand, the particle size of a molecular perovskite energetic material is reduced through refinement, so that the sensitivity of the molecular perovskite energetic material is reduced, and the performance of the molecular perovskite energetic material is improved; on the other hand, the spheroidized growth of the crystal is controlled through the polymer, the friction sensitivity of the molecular perovskite energetic material is further reduced, the problem of high mechanical sensitivity of the molecular perovskite energetic material is effectively solved, and effective support is provided for expanding the practical application field of the molecular perovskite energetic material.

The invention discloses a polypropylene composite material as well as a preparation method and application thereof. The polypropylene composite material comprises the following components in parts by weight: 50-80 parts of polypropylene resin; 4-10 parts of high density polyethylene; 5-15 parts of a polyolefin elastomer; 10 to 20 parts of talcum powder; 1 to 4 parts of polypropylene grafted polysiloxane; and 0.05 to 0.3 part of a beta crystal form nucleating agent. According to the polypropylene composite material disclosed by the invention, polypropylene is grafted with high-molecular-weight polysiloxane, and a specific nucleating agent is added, so that the crystal form of polypropylene is optimized, a more uniform microstructure is formed, a large spherocrystal boundary is reduced, a more uniform dispersion environment is provided for silicone molecules, local enrichment is avoided, and the mechanical property of the polypropylene composite material is improved. Therefore, the injection molding floating problem is effectively improved, and meanwhile, the high scratch resistance of the material is guaranteed. The high-performance polypropylene composite material which has excellent scratch resistance and good appearance at the same time is realized.

An over-current protection element comprises an electrode layer and a thermistor layer. The electrode layer has an upper metal layer and a lower metal layer. The thermistor layer contacts the upper metal layer and the lower metal layer and is stacked between the upper metal layer and the lower metal layer. The thermistor layer has a positive temperature coefficient characteristic and contains a high-molecular polymer base material and a conductive filler. The high-molecular polymer base material contains a fluorine-containing polymer, the fluorine-containing polymer has a plurality of spherocrystals, and the fractal dimension of the surface of each spherocrystal is lower than 12.

The present invention provides a high and low temperature resistant nylon material and a preparation method thereof. The composition of the high and low temperature resistant nylon material includes: 45 to 60 parts of nylon 66, 35 to 45 parts of reinforcing fiber, 5 to 10 parts of low temperature toughening aid, 3 to 5 parts of high temperature resistant aid, 0.5 to 1 part of inorganic lubricant, 0.2 to 0.5 parts of compatibilizer, 0.2 to 0.5 parts of antioxidant, and 0.2 to 0.5 parts of copper salt heat stabilizer; wherein, the low temperature toughening aid is a particle of an organic-inorganic interpenetrating network structure; the high temperature resistant aid is a composite of titanate, long carbon chain carboxylic acid calcium salt, silicone, and calcium sulfate whisker. The low temperature toughening aid of the organic-inorganic interpenetrating network structure is micro-crosslinked to restrain the movement of molecular chains, and the high temperature resistant aid is dispersed into fine particles in nylon to promote the reduction of the spherulite size of nylon 66, and a nylon material with high and low temperature resistance is prepared with the assistance of calcium sulfate whiskers.

The invention relates to the technical field of interface optimization of composite materials, and discloses an interface optimization method of a hollow micron silicon oxide sphere-aluminum nitride whisker composite material, which is applied to a material compounding system comprising a dispersity sensor and an interface regulation and control system in a hot pressing mold. The method comprises the following steps: acquiring spherocrystal dispersion data and interface stress data through a sensor to generate a data set, constructing a dispersion matrix by a regulation and control system, determining material interface combination characteristics, namely processing the matrix, performing thermal field distribution modeling, calculating thermal field distribution gradient and combination prediction information, constructing a coupling regulation and control model, outputting topological distribution characteristics and updating the data set. And finally dynamically regulating and controlling the composite parameters according to the combined characteristics. The method realizes real-time monitoring and accurate regulation and control of the composite material interface, improves the interface bonding quality and the material performance, and is suitable for interface optimization in the composite material preparation process.

The invention relates to the technical field of high polymer materials, and discloses a reactive phosphorus-nitrogen-containing graphene oxide flame retardant and a preparation method and application thereof. According to the invention, the phosphorus-nitrogen flame retardant and the graphene oxide are subjected to composite modification, and a phosphorus-nitrogen compound is grafted to the surface of the graphene oxide through chemical reaction, so that not only can the dispersity and compatibility of the graphene oxide in a polypropylene matrix be improved, but also the synergistic flame-retardant effect of the phosphorus-nitrogen flame retardant and the graphene oxide can be fully exerted; and the graphene oxide can reduce the size of the polypropylene spherocrystal. In addition, the reactive flame retardant can also improve other properties such as mechanical properties, thermal stability and the like of the material to a certain extent, and has a wide application prospect.

The application provides a high-drug-loading porous breviscapine crystal and a preparation method thereof. The crystal is prepared by a solvent diffusion method, does not contain auxiliary materials, and has high drug purity. The crystal is a highly porous, spherical, round, particle-size-controllable, large-particle-size crystal particle, and is easy to implement in an industrial scale. The process is green, and the crystal is crystallized in an aqueous solution. The solvents used can be recycled and reused. The porous breviscapine crystal prepared by the application has rapid in-vitro dissolution, improved flowability and compressibility, and is beneficial to further preparation molding.

The invention relates to a composite current collector and a lithium battery, the composite current collector comprises an organic polymer layer and a conductive layer which are laminated, the organic polymer layer comprises spherulites, in a slicing state, the maximum width of the spherulites is 2-20 [mu] m, the spherulites with the maximum width of 3-7 [mu] m are first spherulites, the spherulites with the maximum width of 3-7 [mu] m are second spherulites, and the spherulites with the maximum width of 3-7 [mu] m are third spherulites. The number of the first spherulites accounts for more than or equal to 40% of the number of all the spherulites. The mechanical strength and heat resistance of the composite current collector can be effectively improved by accurately controlling the sizes of the spherulites and the number proportion of the first spherulites. Appropriate spherocrystal size distribution can avoid local thermal stress concentration and reduce the risk of thermal deformation of the organic polymer layer when the battery emits heat, so that the safety performance of the battery is enhanced, meanwhile, stable combination of the conductive layer and the organic polymer layer is ensured, smooth current conduction is ensured, and the working reliability is ensured.

The invention relates to a toughened PPS membrane material and a preparation method thereof, and belongs to the technical field of PPS membranes. The PPS membrane material is prepared from the following components in percentage by weight: 5.5 to 9.2 percent of toughening agent, 0.18 to 0.23 percent of antioxidant, 1.5 to 1.8 percent of lubricant, 0.12 to 0.15 percent of light stabilizer and the balance of PPS resin, according to the toughening agent, trimethylolpropane triglycidyl ether and excessive 1, 4-cyclohexanedimethanol are subjected to ring opening to prepare an intermediate, and then succinic acid monoethyl ester acyl chloride and terminal hydroxyl of the intermediate are esterified to form a short branched ester chain for peripheral modification, so that the toughening agent is prepared; the toughening agent has a hyperbranched topological structure and has good infiltration and dispersion performance with a PPS matrix, internal organic clusters containing cyclic alkyl provide a large free volume, direct toughening is performed through a slippage mechanism, PPS is induced to form a uniform microcrystalline structure, formation of continuous-phase large-size spherocrystals is inhibited, and the toughness of PPS is remarkably improved.

The invention discloses modified polypropylene based on filler multiphase non-uniform distribution, which is prepared from the following raw materials in parts by mass: 69.1 to 89.7 parts of polypropylene, 5 to 15 parts of inorganic filler, 0.1 to 0.3 part of alpha nucleating agent, 0.1 to 0.3 part of beta nucleating agent, 5 to 15 parts of ethylene propylene rubber-polyolefin elastomer POE and 0.1 to 0.3 part of antioxidant, the inorganic filler is mainly distributed in an amorphous region in the modified polypropylene. The invention also discloses a preparation method of the modified polypropylene based on the multiphase non-uniform distribution of the filler. The raw materials of the modified polypropylene provided by the invention are easily available and cheap; in the modified polypropylene, an alpha / beta eutectic structure is formed instead of irregular spherocrystal, so that good adhesion of an interface can be ensured; moreover, the inorganic filler is distributed in a non-uniform state and is basically distributed in an amorphous region, so that the aim of improving the flowability and impact resistance of the material without influencing the rigidity of the material can be fulfilled.

The invention relates to the technical field of biochemical engineering, in particular to calcium gluconate with a spherocrystal structure as well as a preparation method and application of the calcium gluconate. The calcium gluconate product with the spherocrystal structure can be prepared by adding 1.1 wt%-5 wt% of calcium carbonate ethanol water suspension into 5 wt%-20 wt% of gluconic acid ethanol water solution. Due to the unique spherocrystal structure, the calcium gluconate product has the remarkable advantages that the crystal form is regular, and the core performance of high dissolution rate, high bioavailability and good stability is achieved. The successful construction of the advantageous spherocrystal structure is characterized in that the reaction temperature, the reaction raw material input proportion, the concentration, the solvent system (ethanol-water) and the rotating speed are cooperatively regulated and controlled, and the regulation and control mechanism provides reliable technical support for stable formation of the spherocrystal structure. In addition, the preparation process disclosed by the invention is simple to operate, and has the advantages of environmental protection and no generation of pollutants.

The invention discloses a composite organic improving agent and a preparation method and application thereof. The composite organic improving agent is composed of one or more of monooxadiamide derivatives and one or more of bis-oxadiamide derivatives. The composite organic improver can be used for self-assembly heterogeneous nucleation to induce an ethylene polymer molecular chain to form a variant spherocrystal. The preparation method 1 comprises the steps of reacting oxalic acid diester with diamine, adding a solvent for dissolving, adding monoamine for reflux reaction to obtain a product, and the preparation method 2 comprises the steps of reacting oxalic acid diester with monoamine, adding a solvent for dissolving, adding diamine for reflux reaction to obtain a product. The composite organic improver is used as a polymer additive and has excellent effects of reducing turbidity, accelerating crystallization, improving mechanical properties and the like; and the preparation method is short in process, low in cost, few in raw materials and high in yield.

The invention relates to the technical field of capacitor films, in particular to a metalized capacitor base film with a uniform double-sided structure and a preparation method of the metalized capacitor base film. Wherein the thick sheet sequentially passes through the front roller, the transition roller and the rear roller to move backwards, the contact surfaces of the three rollers and the thick sheet are the same, the temperatures of the front roller and the rear roller are 105-140 DEG C, and the temperature of the transition roller is 20-50 DEG C. The method has the remarkable advantages that the stripping roller set is transformed, the chilling roller and the front roller are kept in the same rotating direction, the contact surface is a thick sheet CR surface, the temperatures of the front roller and the rear roller higher than the chilling roller are in contact heat transfer with the thick sheet CR surface, annealing treatment is applied to the thick sheet CR surface spherocrystal, and double-sided crystallization of the thick sheet is uniform and is close to large-size spherocrystal of an AK surface; the thickness of the film is 2-5 [mu] m, the two-sided coarsening structures are uniform and consistent, the double-sided Rz is greater than 1300 nm, the double-sided SSK is greater than or equal to 0.5, the effective withstand voltage thickness is improved, and the film has excellent coarsening performance and high withstand voltage performance and is suitable for most metallized film capacitors.

This invention discloses a method for the resource utilization of phosphate ore sintering flue gas that can efficiently recover fluorine and sulfur resources, reduce treatment costs, and create resource benefits. The method includes the following steps: sequentially subjecting the sintering flue gas to dust removal, denitrification, and heat exchange to obtain a first gas and dust; reacting the first gas with water to generate a first solid-liquid mixture containing fluorosilicic acid and silica gel, and a second gas; performing solid-liquid separation on the first solid-liquid mixture to obtain a first solid phase mainly composed of silica gel and a first liquid phase mainly composed of fluorosilicic acid; reacting the first liquid phase with sodium sulfate to generate a second solid-liquid mixture containing sulfuric acid and sodium fluorosilicate; and performing solid-liquid separation on the second solid-liquid mixture to obtain a second solid phase mainly composed of sodium fluorosilicate and a second liquid phase mainly composed of sulfuric acid.

The application discloses a kind of ground well valve barrel cylindrical valve body chip rotary extrusion friction semi-solid additive manufacturing device and process, device includes U-shaped frame, crossbeam, first nut motor composite mechanism, second nut motor composite mechanism, T-shaped disc type double rotor motor type male die, first nut motor composite mechanism, second nut motor composite mechanism etc.;When working, first put chip into mould cavity, by the "friction heat effect" generated by T-shaped disc type double rotor motor type male die "rotary extrusion friction" and valve body lower die "reverse rotation friction", the forming of first layer semi-solid spherulitic material valve body barrel wall is realized, then repeatedly additive iteration is realized to form valve body barrel wall, after turning T-shaped disc type double rotor motor type male die, ground well valve barrel cylindrical valve body parts are formed by "vibration, rotary extrusion friction" mode.This device is compact in structure, process is simple, and part material grain is small and uniform, and the organization is dense, high in strength, with good internal organization performance.

The utility model discloses a vortex oscillation type reactor for preparing mesenchymal stem cell spheres, which comprises a base, a motor and an oscillation support are mounted on the base, a cam is connected onto an output shaft of the motor, the motor drives the cam and the oscillation support to rotate synchronously, and a container bottle fixing support is mounted on the oscillation support through a spring. The container bottle fixing support is used for installing a replaceable container bottle, the motor is provided with a controller, and the controller is used for controlling the rotating speed, the forward and reverse rotation direction and timing start and stop of the motor. According to the utility model, the cells are inhibited from adhering to the wall in a special vortex oscillation mode, the cells are promoted to naturally gather to form spheres, the direct shear damage of mechanical stirring to the cells is reduced, and the cell activity and the sphere forming efficiency are improved; the rotating speed and the direction of the motor can be controlled, the vortex intensity and the oscillation frequency are accurately regulated and controlled, the structure is simple and compact, operation is convenient and fast, and the device is suitable for small laboratories.

The invention belongs to the technical field of lithium batteries, and particularly relates to a PVDF-based composite solid electrolyte, a preparation method and application thereof, and a lithium battery. The composite solid electrolyte comprises a PVDF-based polymer, a lithium salt, an amide substance, a nano metal oxide and a residual organic solvent. The nano metal oxide and the amide substance jointly regulate and control the solvation structure of lithium ions, weaken the acting force of a solvent and the lithium ions and the acting force of [Li (residual solvent) x] < + > and a polymer, construct a weak interaction environment of the lithium ions, promote the transmission of Li < + >, and convert an electrode electrolyte interface phase derived from the solvent into an anion-dominated derivative phase, so that the lithium ion battery is obtained. On the other hand, the nano metal oxide reduces the crystallinity of the PVDF polymer, inhibits the formation of spherulites and densification of an electrolyte membrane, facilitates the construction of a uniform and continuous ion transmission channel, improves the mechanical property, effectively inhibits the growth of lithium dendrites, and improves the cycle stability of the battery.

This invention discloses an underwater cooling process that enhances the coupling properties of thermoplastic composites, belonging to the field of composite material processing technology. For thermoplastic composite parts that have just been removed from the mold and are in a high-temperature state, a specific cooling solution is used for jet cooling through an optimized nozzle system. The core of this process lies in the synergistic effect of forced convection, phase change cooling, and dynamic heat conduction. This rapidly reduces the overall temperature of the part (suppressing the formation of large-sized spherulites) while mitigating the temperature gradient in the interfacial region, promoting the full diffusion and entanglement of polymer chains to the surface of the reinforcing fibers within the viscous flow window, thereby optimizing interfacial bonding. By balancing crystallinity and residual stress, this process can increase the interfacial shear strength (IFSS) of the composite material by 15-20%.

The invention discloses a temozolomide spherocrystal based on nano confinement crystallization regulation and a method and application thereof. The preparation method of the temozolomide spherocrystal based on nano confinement crystallization regulation and control comprises the following steps: dissolving glycyrrhizic acid and temozolomide in pure water under an ultrasonic condition, adjusting the pH value to 3-4, heating until the solution is clear, and cooling to 0-5 DEG C under a stirring condition to obtain the temozolomide spherocrystal based on nano confinement crystallization regulation and control. Compared with the temozolomide raw material I crystal form, the temozolomide spherocrystal disclosed by the invention shows excellent nasal administration characteristics, including uniform particle size, high sphericity and excellent fluidity. Cell experiments show high cytotoxicity (IC50 = 51.9 [mu] g mL <-1 >) to glioblastoma, and in vivo experiments prove efficient brain targeting ability of the polypeptide. The preparation method has the characteristics of mild preparation conditions, easiness in process control, good reproducibility, high brain targeting property and the like, and is suitable for treating cancers delivered into the brain through the nose.

The invention discloses high-transparency low-isotacticity thermoforming polypropylene resin and a preparation process thereof, and relates to the technical field of polypropylene resin.The preparation process comprises the following process steps that polypropylene, a transparent nucleating agent, an antistatic agent, an antioxidant, a lubricating agent and an ultraviolet light absorber are subjected to melt blending, extrusion into sheets and thermoforming, and the thermoforming polypropylene resin is obtained; the thermoforming polypropylene resin also comprises modified polypropylene resin; the modified polypropylene resin is obtained by mixing and co-extruding polypropylene, a graft and peroxide. According to the invention, graft modified polypropylene is utilized, and a polar long-branched chain segment is introduced to a non-polar polypropylene molecular chain through a chemical method, so that steric hindrance is generated, local regular arrangement of methyl is destroyed, local conformation of polypropylene is disordered, movement of the polypropylene molecular chain is limited, crystalline regions are reduced, spherocrystal is refined, and light scattering and Mie scattering are reduced; and the transparency of the prepared polypropylene resin is improved.

To provide an electrophotographic member that has high followability to paper while improving wear resistance of a surface layer against a sheet, and provides high image glossiness and good image quality.SOLUTION: An electrophotographic member has at least a base layer, an elastic layer, and a surface layer in this order. The surface layer includes a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer. In an endothermic curve when measurement is performed twice by using a differential scanning calorimeter at a rate of temperature increase and a rate of temperature decrease of 20°C / min respectively, with a sample sampled from the surface layer as a measurement sample, the endothermic peak temperature in the second temperature increase process is 304°C or less, and the endothermic quantity in the first temperature increase process is 21 J / g or more. When the area average diameter of spherulites on an outer surface of the surface layer is defined as D3, D3 is 40 μm or less.SELECTED DRAWING: Figure 3

The present application relates to a kind of composite current collector and lithium battery, the composite current collector includes the organic polymer layer and conductive layer of laminated arrangement, the organic polymer layer includes spherulite, in slice state, the maximum width of the spherulite is 2~20 μm, and the spherulite of maximum width 3~7 μm is first spherulite, the number of the first spherulite accounts for the number of all the spherulite ratio ≥40%.By accurately controlling spherulite size and the number of first spherulite ratio, the mechanical strength and heat resistance of composite current collector can be effectively improved.Suitable spherulite size distribution can avoid local thermal stress concentration, reduce the risk of organic polymer layer thermal deformation when battery heating, thereby enhancing the safety performance of battery, while ensuring that the conductive layer and organic polymer layer are combined firmly, guaranteeing smooth current conduction and ensuring reliable operation.

Membrane material for loudspeaker drivers and material for dust caps of loudspeaker drivers, characterized in that it consists of pure or at least very pure β-polypropylene. The material preferably consists of isotactic polypropylene homopolymer. The crystallinity of the material is preferably between 40% and 65%. The crystals (β-polypropylene crystals) preferably have a size of 10 µm to 20 µm. For a crystal size of 15 µm, the side length is approximately 7.5 µm and the two large faces each have a size of approximately 146 µm. 2 The crystal's height is approximately 2.6 µm and its volume is approximately 380 µm³. 3 . The spherulites (clusters of crystals) of the material preferably have a size of 300 µm to 1200 µm.

This invention discloses a heat-resistant polypropylene cable insulation material, its preparation method, and its application, belonging to the technical field of cable insulation materials. The insulation material is made by melt blending long-chain branched polypropylene (LCBPP) with an elastomer, wherein the mass ratio of LCBPP to elastomer is 70~90:10~30. Long-chain branching modification enhances the chain entanglement between molecular chains, inhibiting phase separation between polypropylene and elastomer during heat aging. Simultaneously, the dense spherulitic structure of LCBPP hinders oxygen intrusion, reducing the oxidation rate. After heat aging at 135℃ for 1440 hours, the carbonyl index increases by only 134.2%, the average POE size increases by 29.0%, the breakdown field strength decreases by ≤11.3%, the tensile strength decreases by ≤29.1%, and the elongation at break remains above 550%, meeting cable application standards. This solves the technical problem of poor heat aging performance of traditional polypropylene blend insulation materials and can be widely used in cable insulation under high-temperature environments.