31 results about "Resin modified" patented technology

The invention relates to a high-solid-content epoxy glass flake heavy anti-corrosion coating for an offshore wind power foundation, which consists of a component A and a component B, the component A is prepared from raw materials in percentage by weight as follows: 10%-20% of bisphenol A epoxy resin, 20%-40% of modified hydrogenated epoxy resin, 5%-10% of liquid petroleum resin, 1%-2% of a rheological aid, 0.1%-1% of a dispersant, 0.1%-1% of a defoaming agent, 1%-3% of a silane coupling agent, 5%-10% of modified glass flakes, 20%-40% of functional filler and 0-10% of a composite environment-friendly solvent; and the component B is a mixed amine epoxy curing agent. The epoxy glass flake coating disclosed by the invention can be thickly coated at one time, has excellent adhesive force, hardness, wear resistance and impact resistance, is high in drying speed, excellent in chemical corrosion resistance, seawater soaking resistance and cathodic disbonding resistance, and meets the performance requirements of NORSOK M-501: 2022 (edition VII) Surface Treatment and Protective Coating.

The present application relates to the technical field of functional materials for laminated glass, and particularly relates to a multifunctional PVB interlayer for laminated glass, a preparation method and application thereof. In the interlayer, the first skin layer and the second skin layer respectively comprise PVB resin, modified LaB6, synergistic stabilizer (epoxy resin, organic titanium chelating agent and ultraviolet stabilizer), plasticizer, adhesion regulator and antioxidant; the core layer comprises PVB elastomer mixture and plasticizer, and the PVB elastomer mixture comprises PVB elastomer prepared from first PVA (polymerization degree 1700-1800, alcoholysis degree 86-90%) and PVB elastomer prepared from second PVA (polymerization degree 2000-2100, alcoholysis degree 86-90%); the thickness of the skin layer is greater than that of the core layer, and the content of the plasticizer in the skin layer is less than that in the core layer. Through synergistic design of the three-layer composite structure, the present application realizes high integration of infrared blocking, anti-aging, strong adhesion and high-efficiency sound insulation functions.

This invention relates to the field of polymer materials technology. It discloses a low-linearity polypropylene-talc composite material, its preparation method, and its applications. The material comprises the following raw materials in weight percentages: polypropylene resin: 50-65%, modified talc: 15-25%, ethylene-octene copolymer resin: 10-15%, modified flat glass fiber: 5-15%, basic magnesium sulfate whiskers: 3-10%, heat stabilizer: 0.3-1%, and antioxidant: 0.1-0.5%. This composite material exhibits advantages such as a low coefficient of linear expansion, excellent surface tension, and superior mechanical properties.

This invention discloses a siloxane-modified epoxy resin and its preparation method, belonging to the field of epoxy resin modification technology. By introducing Si-O bonds into the epoxy resin molecular chain through a hydrosilylation reaction of hydrogen-containing siloxane cyclic molecules, the glass transition temperature of the modified resin can be significantly increased. Simultaneously, the dense siloxane cross-linked network can block the penetration of corrosive media such as water, acids, alkalis, and salts, thus improving the service life of the resin in humid and salt spray environments. The resulting siloxane-modified epoxy resin exhibits significantly improved mechanical properties such as heat resistance, weather resistance, stability, and toughness, solving the problem of reduced resin stability and heat resistance during modification processes in existing technologies.

A modified polyvinyl acetal resin comprising residues of a cyclic aldehyde is provided for use in forming interlayers for making laminated glass. Interlayers as described herein exhibit desirable optical and acoustic properties and are more easily recycled than those without the modified polyvinyl acetal resin.

To provide a resin modifier and an ultraviolet absorber derived from natural materials, which can dissolve in resin without use of special dispersion means.SOLUTION: A glycol lignin alkylene oxide adduct, with alkylene oxide added to glycol lignin, is used as a resin modifier or an ultraviolet absorber.SELECTED DRAWING: Figure 1

Provided are polymer compositions comprising a polyvinylidene fluoride resin and a multi-stage acrylic polymer. The multi-stage acrylic polymer comprises a cross-linked core, at least one intermediate layer, and a shell. Each of the cross-linked core and the shell comprise polymerized units derived from one or more alkyl (meth) acrylate monomers, and the one or more intermediate layers comprise polymerized units derived from one or more alkyl (meth) acrylate monomers, styrenic monomers, and combinations thereof. An article comprising the polymer composition and a photovoltaic module comprising a film comprising the polymer composition are also disclosed.

The application discloses a kind of seawater corrosion-resistant water-blocking cables, belong to cable technical field, the seawater corrosion-resistant water-blocking cable of the application, including cable core, water-blocking filling layer, water-blocking tape layer, inner sheath, armoring layer and outer sheath, armoring layer and outer sheath between being provided with modified asphalt layer;Cable core includes conductor from inside to outside, semiconductor water-blocking layer, insulating layer, insulating shield, copper plastic composite tape and corrosion-resistant water-blocking inner sheath;Corrosion-resistant water-blocking inner sheath and inner sheath are water-blocking corrosion-resistant ethylene-propylene rubber composite material;Outer sheath is corrosion-resistant water-blocking polyethylene composite material, modified asphalt coating is prepared from resin modified geopolymer modified petroleum asphalt, the seawater corrosion-resistant water-blocking cable of the application has excellent mechanical strength, flexibility, bending performance, wear resistance, high and low temperature resistance and electrical insulation, can guarantee its stability and reliability in complex marine environment power transmission, prolongs the service life of cable, reduces maintenance cost and risk.

The utility model provides hot processing equipment for a resin modified material, which comprises a preheating mechanism and a processing mechanism arranged at the bottom of the preheating mechanism, and the processing mechanism comprises a processing box, a heating pipe arranged in the processing box and fins arranged on the outer wall of the heating pipe, the device comprises a treatment box, a heating plate arranged at the bottom in the treatment box, a liquid outlet pipe arranged at the bottom of the treatment box, a liquid outlet groove formed in the liquid outlet pipe, and a vacuum pump arranged on one side of the top of the treatment box; when the resin modified material treatment device is used, after a resin modified material enters the treatment box, the heating pipe in the treatment box heats the resin modified material, and meanwhile, the heating plate at the bottom in the treatment box heats the bottom of the resin modified material, so that the heating efficiency is improved, and meanwhile, air in the treatment box is pumped out by the vacuum pump; and bubbles in the resin modified material are broken to perform defoaming work.

The invention discloses a continuous multi-screw oil-filled mixing machine for resin modification, which comprises a resin feeding system, an extended oil feeding system, an inorganic filler feeding system and a multi-screw oil-filled mixing machine, and is characterized in that resin is conveyed into a feed port of a first section of cylinder of the multi-screw oil-filled mixing machine; filling oil is conveyed into a feeding hole of a first section of barrel of the multi-screw oil-filled mixing machine, and the inorganic filler feeding system is connected with a barrel close to a discharging barrel of the multi-screw oil-filled mixing machine; the multi-screw oil-filled mixing machine is used for mixing and interface updating of the resin raw material and filling oil which are metered and fed in proportion under the conditions of corresponding temperature and time through a plurality of internal screws, so that the filling oil is uniformly mixed into the powder or granular resin raw material, and a certain amount of inorganic filler is mixed. The whole process is operated in a continuous mode, the production process does not need to be interrupted, the difference between batches can be avoided, and the stability and mixing uniformity in the oil filling process can be continuously guaranteed; the volume ratio is greatly improved through the parallel multi-screw mode.

The utility model belongs to the technical field of iron sheet printing equipment, and discloses a metal printing machine discharging and conveying device which comprises a multi-stage speed reduction rail, the width of the multi-stage speed reduction rail is gradually reduced in the conveying direction, and the inner wall of the multi-stage speed reduction rail is coated with an epoxy resin modified coating. The multi-stage speed reduction rail comprises a first-stage speed reduction rail body, a second-stage speed reduction rail body and a third-stage speed reduction rail body, the first-stage speed reduction rail body, the second-stage speed reduction rail body and the third-stage speed reduction rail body are sequentially connected in a welded mode through the seamless welding technology, and the multi-stage speed reduction rail body is installed on the bottom face through a supporting and fixing device. A material inlet is formed in the end, away from the second-stage speed reduction rail, of the first-stage speed reduction rail, the material inlet is in mechanical butt joint with a metal decorating machine discharging opening, and a plurality of reinforcing edges are installed at the bottom of the first-stage speed reduction rail and arranged in the material conveying direction of the first-stage speed reduction rail. The multi-stage speed reduction device not only can realize multi-stage speed reduction of the ironwork, but also can reduce the phenomenon that the surface of the ironwork is scratched.

This application discloses a vehicle underbody protection plate, its preparation method, and a vehicle. The vehicle underbody protection plate includes: a first skin, comprising a first fiber-reinforced resin composite material; a core material located on one side of the first skin, comprising a hollow fabric matrix and a modified resin filled in the hollow fabric matrix, the modified resin comprising hollow glass microspheres and a resin material, the hollow glass microspheres being dispersed in the resin material; and a second skin located on the side of the core material away from the first skin, comprising a second fiber-reinforced resin composite material. The core material is a lightweight material, which can effectively reduce the weight of the underbody protection plate and achieve the purpose of lightweighting; the hollow glass microspheres have typical microsphere breakage and compression compaction stages under external ballast, which can provide excellent energy absorption effect and compressive strength; the use of hollow fabric to toughen and reinforce the core material can at least partially prevent the core material from breaking and losing its energy absorption protection capability when subjected to external impact.

The invention discloses a construction method of a quick repair material prepared from concrete waste in an expansion joint anchoring area, which comprises the following steps: firstly, preparing powder and crushing concrete chiseled off on site by using a crusher to obtain fine waste with the particle size of less than or equal to 2.36 mm and 2.36 mlt; the particle size of the coarse waste is smaller than or equal to 25 mm; uniformly mixing the powder with a certain amount of fine waste and water-borne epoxy resin modified graphene oxide, adding a curing agent and water, uniformly mixing, and pouring into the chiseled working surface of the anchoring area of the expansion joint to fill the hole; uniformly mixing the powder with a certain amount of coarse waste and waterborne epoxy resin modified graphene oxide, adding a curing agent, the powder and water, uniformly mixing, pouring into a working surface, vibrating, finishing the surface, and performing microwave curing for 40-60 minutes. According to the construction method of the rapid repairing material, the plugging material and the concrete in the anchoring area are formed respectively, so that the cracking resistance and the impact resistance of the rapid repairing material are improved, the interface bonding strength and toughness of the rapid repairing material and the anchoring area of the bridge expansion joint to be repaired are improved, and the maintenance time is short.

The invention relates to the technical field of resin, in particular to a low-dielectric-constant modified PBT composite material and a preparation method thereof. The low-dielectric constant modified PBT composite material is prepared from the following components: PBT resin, modified PBT resin, PET resin, PC resin, copolymerized PP resin, composite glass fibers, a flame retardant, a flexibilizer, a basic magnesium sulfate whisker silane coupling agent, an antioxidant and propylene-octylene copolymer grafted glycidyl methacrylate. The modified PBT resin is prepared through swelling treatment and carboxyl-terminated butyronitrile glue solution grafting modification, through the synergistic effect of the modified PBT resin and the composite glass fiber, the dielectric constant at the frequency of 1 MHz is as low as 2.30-2.48, the dielectric loss is only 0.0020-0.0032, and the composite requirements for low dielectric, high mechanics, high flame retardance and high temperature resistance in multiple fields such as automobiles, electronic appliances and aerospace can be met.

This invention belongs to the field of polymer materials and discloses a high-temperature resistant self-lubricating PA6T material and its preparation method. The high-temperature resistant self-lubricating PA6T material includes the following raw materials: PA6T resin, modified glass fiber, modified polytetrafluoroethylene micro powder, composite filler, compatibilizer, antioxidant, and lubricant. The modified polytetrafluoroethylene micro powder is a copolymer layer of composite nano-ceramic hybrids in situ coated with polytetrafluoroethylene microspheres after surface modification by a silane coupling agent. The composite filler is a self-assembled porous aluminum nitride and three-dimensional porous graphene modified by a bisphenol A type epoxy resin modified silane coupling agent, and finally grafted with PA6T molecular chains by in-situ melt polymerization. This invention uses PA6T as the base resin and adds modified polytetrafluoroethylene micro powder and composite filler. The two complement each other functionally and synergistically at the interface, which not only solves the traditional pain points of poor friction and wear and high brittleness of PA6T, but also improves the high-temperature resistance, thermal conductivity and dimensional stability of the material.

A method may include: introducing a resin modified cement slurry into a wellbore penetrating a subterranean formation, the subterranean formation comprising a caprock and a carbon dioxide injection zone, the resin modified cement slurry comprising: a resin; a hardener, a hydraulic cement; and water; and setting the resin modified cement slurry to form a set cement wherein the set cement forms a carbonation-resistant barrier in the carbon dioxide injection zone in the subterranean formation.

The application discloses a modified protective material for marine concrete and a preparation method and application thereof, wherein the A component of the material is composed of a modified epoxy resin matrix, a toughening compatilizer and an auxiliary agent, the B component is composed of a functional compound curing agent, a silane modified composite corrosion resistant filler and a curing accelerator, the modified epoxy resin matrix is a bisphenol A epoxy resin modified by an amino-terminated polyether, the functional compound curing agent is a compound of an amine curing agent and an organic silicon modified imidazole, and the silane modified composite corrosion resistant filler is a mixture of silane modified nano silicon dioxide, graphene and mica powder. Under the joint action of the raw material components, the modified protective material has the characteristics of high adhesion, high toughness and long-term corrosion resistance, and can be widely used in the protection of marine concrete as a novel corrosion resistant protective material with excellent performance, can ensure the stability of coating construction quality and protection effect, has high use value and good application prospect.

This invention relates to the field of sliding materials for seismic isolation bearings, specifically disclosing a high thermal conductivity and wear-resistant composite material for building seismic isolation bearings and its preparation method. The high thermal conductivity and wear-resistant composite material for building seismic isolation bearings comprises the following raw material components: aliphatic polyketone, high-styrene resin modified methyl vinyl silicone rubber, silicone resin, polytetrafluoroethylene, thermally conductive components, lubricant, compatibilizer, light stabilizer, antioxidant, and coupling agent; the thermally conductive components include the following raw material components: flake natural graphite, hexagonal boron nitride, and expanded graphite. The high thermal conductivity and wear-resistant composite material for building seismic isolation bearings of this invention exhibits high strength, stable energy dissipation performance, excellent thermal conductivity and heat dissipation capacity, and long-term wear resistance and durability under high temperature, high pressure, large displacement, and multi-cycle comprehensive working conditions, thereby effectively overcoming the problems of softening and heating, severe wear, and performance degradation of existing bridge seismic bearing materials during strong earthquakes and long-term service.

The application discloses a kind of high durability reflective hot melt road marking paint and preparation method thereof, belong to the field of coating technology.The coating is made of the following weight parts of raw materials: modified petroleum resin 15-25 parts, plasticizer 2-5 parts, glass bead 5-15 parts, pigment 5-10 parts, filler 45-60 parts, durability enhancer 3-8 parts, antioxidant 0.5-1.5 parts.The modified petroleum resin is by hydrolysis of specific molar ratio of silane monomer to make epoxy group end-capped organosilicon oligomer, then with petroleum resin chemical grafting and obtained;The durability enhancer is compounded by nano silicon dioxide, elastic polymer micro powder and silane coupling agent according to the mass ratio of (1-2):(1-2):1.The application is by the synergistic effect of resin modification and composite enhancer, so that the coating has excellent wear resistance, high adhesion, excellent low temperature flexibility and durable reflective performance, and cost controllable, construction is convenient, and application prospect is wide.

The application discloses a kind of high-strength low-elasticity water-soluble resin cement paste, including the following weight parts raw materials: Portland cement 40-50 parts, resin modified material 10-15 parts, acrylic emulsion 5-10 parts, silicon nitride whisker 1-5 parts, borax 1-4 parts, nano alumina 1-5 parts, interface modifier 1-5 parts, ethanol 45-55 parts.The cement paste of the application is based on Portland cement, by adding resin modified material, silicon nitride whisker, nano alumina and acrylic emulsion and other raw materials, the strength performance of product is enhanced, at the same time, the resin modified material uses lanthanum sulfate solution, first stirring is mixed fully, then add tetra-n-propyl zirconate, N-2-aminoethyl-3-aminopropyl trimethoxysilane, modified nano silicon dioxide raw material contact reaction, after resin modification, the interface force effect between resin and inorganic raw materials is enhanced.

The utility model discloses a carbon five resin modification reactor of annular feeding which comprises a tank body, a stirring assembly and a mixed liquid ring, wherein the tank body is a hollow rotary body, the mixed liquid ring is arranged on the upper part of the tank body, the tank body side wall below the mixed liquid ring is provided with a feeding port, the tank body lower part is provided with a discharge port, and the upper part is provided with a plurality of improved mixed liquid feeding ports. The stirring assembly comprises a stirring motor, a stirring shaft and stirring blades, the mixed liquid ring is provided with a through hole in the center, the stirring shaft passes through the through hole, and a convex ring is arranged at the edge of the through hole. The carbon five resin modification reactor of annular feeding is provided by the utility model, which adopts the mode of current mixing + annular overflow feeding, realizes the current preparation and use and uniform drop of the modified mixed liquid, and ensures the continuous reaction. The mixed liquid ring is arranged on the top of the reaction tank, a plurality of modified liquids are poured into the mixed liquid ring according to the preset ratio of the process, and then enter the reaction tank through the overflow mode after stirring.

The invention belongs to the technical field of polymer composite materials and structural engineering materials, and particularly relates to a thermoplastic composite structural plate based on continuous fiber reinforcement and a preparation method of the thermoplastic composite structural plate. The composite structural plate is prepared from modified polyaryletherketone, 2, 4, 6-trihydroxymethyl phenol, continuous carbon fiber fabric, a compatible flexibilizer, an antioxidant, a heat stabilizer and a lubricating dispersant. Wherein the modified polyaryletherketone is prepared through aromatic ring bromination, alkynyl grafting and in-situ graphdiyne construction reaction, a short-distance graphdiyne pi-segment structure is formed in the hot press molding stage, and a stable pi-pi conjugated interface is generated on the surface of the carbon fiber. The method comprises the steps of resin modification, mixing granulation, fiber impregnation and hot press molding. Compared with a traditional system, the interlaminar shear strength, bending strength and thermal deformation temperature of the material are remarkably improved, and the material has excellent interface bonding force, thermal stability and fracture toughness and is suitable for the fields of aerospace, rail transit and high-performance structural components.

The invention discloses hydroxy acrylic resin and a preparation method thereof, a hydroxy acrylic resin modified TPU (thermoplastic polyurethane) film for a swelling adhesive tape base material and a preparation method of the TPU film. The high-TG hydroxy acrylic resin is prepared by compounding specific raw materials, the hydroxy acrylic resin is used for modifying a TPU film for a swelling adhesive tape base material, and the hydroxy acrylic resin has a high glass transition temperature and contains rigid chain segments such as polymethyl methacrylate, polystyrene and polyacrylonitrile, so that the hydroxy acrylic resin has relatively high hardness and good bearing performance, and can be used for preparing the TPU film for the swelling adhesive tape base material. After the hydroxy acrylic resin modified TPU film is added into the TPU film, the hydroxy acrylic resin modified TPU film has a good supporting effect on the TPU film, the stiffness and surface hardness of the TPU film are improved, the temperature resistance of the TPU film is enhanced, and the prepared hydroxy acrylic resin modified TPU film has the advantages of being high in expansion rate, good in temperature resistance and good in stability, and the strength of the hydroxy acrylic resin modified TPU film cannot be reduced after the hydroxy acrylic resin modified TPU film is soaked in electrolyte for a long time.

This invention discloses a green sound-insulating and heat-insulating mortar and its preparation method, relating to the field of building materials technology. The mortar formulation of this invention includes sulfoaluminate cement, fly ash, epoxy resin-modified waste EPS composite lightweight aggregate, pre-activated silica-alumina-based admixture, closed-cell expanded vitrified microspheres, redispersible latex powder, hydroxypropyl methylcellulose ether, composite foaming agent, polypropylene fiber, starch ether, polycarboxylate-based water-reducing agent, and water. This gives the mortar lightweight, high strength, and comprehensive performance in terms of heat insulation and sound insulation, while also realizing the resource utilization of waste polystyrene foam.

The invention discloses a floating-fiber-free high-strength nylon composite material preparation method, which comprises: modifying glass fibers, carrying out melt mixing with an ethylene-vinyl alcohol polymer to obtain a modified glass fiber master batch, modifying short-cut flat glass fibers, mixing with basic magnesium sulfate whiskers, and carrying out extrusion molding to obtain the floating-fiber-free high-strength nylon composite material. Melting and granulating with an ethylene-octylene copolymer graft to obtain a modified powder master batch; finally, PA66 resin, the modified glass fiber master batch, MXD6 resin, the modified powder master batch, a cross-linking agent, a heat stabilizer and an antioxidant are subjected to melt extrusion granulation, and the floating-fiber-free high-strength nylon composite material is prepared, has the advantages of no floating fiber phenomenon, excellent mechanical strength, low water absorption rate, high dimensional stability and the like, and can be applied to manufacturing of toilet lid damper cores.

The invention discloses an epoxy resin modified foamed ceramic silicone rubber material and a preparation method thereof, and the epoxy resin modified foamed ceramic silicone rubber material is prepared from the following raw materials in parts by weight: silicone rubber, vinyl silicone oil, hydrogen-containing silicone oil, epoxy resin, a silane coupling agent KH-560, white carbon black and hollow glass beads. The paint is prepared from aluminum hydroxide, mica powder, magnesium hydroxide, graphite, low-melting-point glass powder, titanium dioxide, fiber filler, carbon black, methyl silicone oil, methylbenzene, an inhibitor and a catalyst. The epoxy resin and the silane coupling agent are introduced to modify and foam the ceramic silicone rubber, so that the mechanical property, the interface bonding property and the structural stability of the material are remarkably improved, and the foamed ceramic silicone rubber is endowed with excellent ablation resistance, mechanical property and heat insulation property.

The invention discloses heat-insulating glass and a preparation method thereof, and relates to the technical field of heat-insulating glass, the heat-insulating glass comprises an inner-layer glass substrate, a first bonding layer, a composite heat-insulating layer, a second bonding layer and an outer-layer glass substrate which are stacked in sequence; the composite heat insulation layer comprises a core layer and reinforcing layers located on the two sides of the core layer respectively. Wherein the composite heat insulation layer comprises the following components: a core layer and a coating layer; the core layer comprises PVB (Polyvinyl Butyral) resin, modified aerogel, a silane coupling agent, carbon, polyethylene glycol, nano ZnO and a cross-linking agent; the reinforcing layer comprises PVB resin and a glass fiber fabric; the modified aerogel is obtained by taking silicon dioxide aerogel as a matrix and carrying out in-situ modification by an elastic polymer, loading rutile type TiO2 and hollow glass beads and carrying out plasma surface modification; according to the heat-insulating glass, the composite heat-insulating layer of modified aerogel is introduced, so that the heat-insulating glass has ultralow heat conductivity coefficient and high mechanical strength at the same time.

The invention discloses a high-performance epoxy resin modified filling material for a metal floor and a preparation method of the high-performance epoxy resin modified filling material, and relates to the technical field of epoxy resin-based filling materials. The epoxy resin is modified by using the imidogroup modified polybutadiene liquid rubber, an imide structure is introduced to improve the overall polarity, improve the bonding strength and enhance the bonding effect between metal plates and the ground, and then the epoxy resin is mixed with the alkenylated epoxy resin and the alkenylated nano filler and cured to form a high-crosslinking structure, so that the deformation shrinkage is reduced; the size stability of the adhesive layer at high temperature or in long-term use is ensured, and the damage of the adhesive layer caused by deformation is avoided. The alkenylation nanofiller is modified by alkenylation, has good compatibility with an epoxy resin system, is uniformly dispersed and is not easy to settle, and the porous structure of the alkenylation nanofiller enables liquid resin to be fully permeated into micropores during curing so as to fill gaps generated by shrinkage of resin chains.

This invention discloses a high-strength, high-toughness, and high-thermal-stability PA66 composite material and its preparation method. The PA66 composite material is composed of PA66 resin, modified chopped glass fiber, toughening agent, composite heat resistant agent, high-efficiency nucleating agent, color masterbatch, and lubricant. The preparation steps are as follows: Step (1): PA66 resin, composite heat resistant agent, high-efficiency nucleating agent, toughening agent, color masterbatch, and lubricant are mixed in a high-speed mixer to obtain a premix; Step (2): The premix is ​​added from the main feed port of a twin-screw extruder, and the modified chopped glass fiber is introduced from the side feed port of the twin-screw extruder. The side feed port is located after the melting section of the cylinder and before the vacuum exhaust port; after melt mixing and vacuum devolatilization, the material is extruded, cooled, and pelletized to obtain composite material particles. The PA66 composite material of this invention has high breaking strength, good toughness, and excellent long-term thermal stability, making it suitable for high-temperature and high-strength working conditions.