115 results about "Resin-Based Composite" patented technology

This invention discloses a heterojunction low-temperature curing silver paste suitable for space HJT battery applications, its preparation, and its application. The heterojunction low-temperature curing silver paste comprises the following components in parts by weight: 75-92 parts of a first conductive powder, 0.5-5 parts of a second conductive powder, 2.25-9.5 parts of a composite resin system, 0.5-4.8 parts of a blocked isocyanate curing agent, 0.05-0.5 parts of a latent accelerator, 0.2-1.8 parts of a coupling agent, 0.3-1.5 parts of a dispersant, and 1.5-6.4 parts of a solvent; the composite resin system comprises epoxy resin and cyanate ester resin, with a mass ratio of epoxy resin to cyanate ester resin of (2-8):1. The silver paste of this invention can form a dense cross-linked network after curing at 150-250℃, while meeting the low outgassing requirements of materials for spacecraft. It can withstand extreme temperature difference cycles from -196℃ to +150℃ and high-energy particle irradiation environments in space, and is suitable for the preparation of metallized electrodes for HJT solar cells in low Earth orbit and medium-high Earth orbit.

This invention discloses a method for preparing a novel ultra-high voltage high-performance composite insulating material, belonging to the field of composite insulating material preparation technology. The technical solution includes the following steps: S1, preparing a modified epoxy-silicone rubber composite resin matrix: 40-50 parts by weight of bisphenol A type epoxy resin (E-51) are placed in a reaction vessel, heated to 60-70℃, and continuously stirred at a stirring rate of 300-500 r / min. 10-15 parts by weight of terminal hydroxyl polysiloxane (molecular weight 5000-10000) are added, and the temperature is kept constant for 1.5-2 hours; subsequently, the system temperature is lowered to 40-50℃. The beneficial effects of this invention are: by setting up a resin matrix system of "terminated hydroxyl polysiloxane modified epoxy resin + nano-alumina / boron nitride composite reinforcement," the problem of imbalance between high voltage resistance and aging resistance in existing materials is solved. It exhibits significantly improved dielectric strength, greatly reduced dielectric loss, and excellent high and low temperature cycling performance, meeting the long-life operation requirements of ultra-high voltage equipment.

The present application relates to a kind of water-based paint for leather surface waterproof, belong to coating technical field.The water-based paint is made of the following components: 80 parts polyether sulfone modified polyurethane-acrylate composite resin dispersion, 5 parts crosslinking agent polycarbodiimide, 10 parts anti-adhesive polydimethylsiloxane, 10 parts cosolvent dipropylene glycol methyl ether, 10 parts nano reinforcing material, 1.5 parts amino-terminated hyperbranched polyamide.Core resin dispersion is prepared by grafting onto polyurethane-acrylate skeleton through sulfonated polyether sulfone chemistry.The present application is prepared by unique resin chemical modification and nanocomposite technology, so that the obtained coating has excellent waterproofness, high adhesion, good mechanical strength and anti-aging property, especially suitable for high requirements such as automotive interior, furniture and other leather surface treatment, while meeting environmental protection requirements.

This invention discloses a high-strength, high-toughness composite runway panel for unmanned aerial vehicles (UAVs). The panel comprises a composite material body, including warp and weft threads. The warp threads are fiber-reinforced composite resin rods with a diameter of 1-5 mm; the weft threads are fiber-reinforced, antistatic, high-strength, high-toughness polyurethane-modified polyester fibers. Fiber / honeycomb reinforced composite material support frames are inserted into the gaps formed by the weaving of the warp and weft threads. The thickness and width of the support frames match the gaps. A matching insertion connection structure I is provided on one opposite side of the panel, and a matching insertion connection structure II is provided on the other opposite side, enabling rapid splicing of adjacent panel bodies in both length and width directions. This invention provides corresponding insertion connection structures on the four sides of the panel body for rapid splicing. The three-dimensional weaving structure of the warp and weft threads gives the runway panel a shape memory function; the panel body deforms under load and can quickly and automatically recover its original three-dimensional shape after unloading.

The present invention provides a method for producing a silicone acrylic graft copolymer resin that yields a coating film with excellent resistance to repeated temperature changes. [Solution] The method for producing a silicone acrylic graft copolymer resin according to the present disclosure includes: step 1, synthesizing a water-dispersible acrylic resin by solvent polymerization in the presence of a polysiloxane to obtain a composite resin (i); step 2, adding 0.8 to 4 equivalents of water to 1 equivalent of the composite resin (i) to disperse the composite resin (i) in water; and step 3, synthesizing a hydrophobic acrylic resin by emulsion polymerization in the presence of the water-dispersed composite resin (i) to obtain a composite resin (ii).

This invention discloses a method for evaluating the mechanical properties of resin-based composite materials in ultra-low temperature environments, belonging to the field of materials testing technology. The method includes: constructing a drift baseline and registering drift mutation markers based on a maintained sequence record and the original load sequence; performing zero-point drift subtraction and mutation segment removal to generate a load-displacement synchronization sequence; inserting a micro-amplitude stress disturbance segment into the load-maintaining segment based on the load-displacement synchronization sequence; acquiring high-frequency mechanical signals and marking the segment type; simultaneously setting mutation thresholds and persistence thresholds to identify brittle fracture precursor events; extracting the elastic modulus and strength correlation intervals from the load-displacement synchronization sequence; combining the brittle fracture precursor events to identify the brittle fracture initiation load interval; performing solidification registration; and generating a mechanical property evaluation report. This invention achieves the active excitation and effective identification of brittle fracture precursor events, improving the reliability of ultra-low temperature mechanical testing data and the ability to quantitatively evaluate the failure process.

This invention provides a low-temperature sintering conductive copper paste, its preparation method, and an electronic device. The conductive copper paste includes: graphene-coated copper powder, a nitrogen-containing composite resin, a reducing agent, and an organic solvent. The graphene-coated copper powder includes a copper core and a graphene shell covering the copper core. The defect density of the graphene shell increases from the inside to the outside, making it suitable for flexible substrates. It can form a three-dimensional interpenetrating continuous conductive network of graphene under low-temperature sintering conditions. The preparation method includes a three-stage low-temperature fluidized bed chemical vapor deposition process to prepare the graphene-coated copper powder. The preparation method is simple and highly operable. The electronic device provided by this application is made using the conductive copper paste of this application, resulting in stable and reliable signal transmission, good overall performance, and a long service life.

This application provides a method for thermogravimetric analysis (TGA) of resin-based composite materials for aero-engine components, belonging to the field of composite material testing technology. The method includes: extracting the operating state points of the aero-engine components; simplifying the operating state points; determining statistical results of the component's operating temperature and operating time for the thermogravimetric analysis based on the simplified operating state points; conducting a preliminary thermogravimetric analysis based on the statistical results of the component's operating temperature and operating time; using the preliminary thermogravimetric analysis results as a benchmark, determining the thermogravimetric trend and the direction for conducting thermogravimetric analysis using a temperature gradient; determining the temperature threshold for thermogravimetric analysis based on the temperature gradient thermogravimetric analysis results; calculating the cumulative thermogravimetric rate of the composite material used in the aero-engine components over the entire engine lifespan by calculating the thermogravimetric rate at each operating temperature above the cumulative temperature threshold; and accelerating the thermal aging of a new test piece to the cumulative thermogravimetric rate to obtain performance loss results.

To provide a toner for electrostatic image development that offers excellent resistance to hot offset and durability. [Solution] A toner for developing electrostatic images, comprising toner particles containing a binder resin and a release agent, The amorphous composite resin A comprises a polyester resin segment which is a polycondensate of an alcohol component and a carboxylic acid component, and a polymethacrylate ester resin segment which is an addition polymer of raw material monomers containing a methacrylate ester. A toner for developing electrostatic images, wherein the release agent contains ester wax.

This invention relates to the field of water pollution remediation technology, specifically providing an iron-titanium co-loaded resin material, its preparation method, and its application. The preparation method of the iron-titanium co-loaded resin material includes the following steps: preparing an Fe-loaded resin intermediate by shaking and soaking a sulfonic acid-based cation exchange resin with an iron ion solution; preparing an iron-titanium composite modified resin intermediate by shaking and soaking the Fe-loaded resin intermediate with a titanium ion solution; and stirring the iron-titanium composite modified resin intermediate with a mixed treatment solution containing sodium persulfate and sodium hydroxide, washing until neutral, and drying to obtain a composite resin material co-loaded with iron oxide and titanium oxide. This iron-titanium co-loaded resin material can significantly reduce manganese ion concentration when applied to groundwater purification and can be used in in-situ groundwater remediation projects.

The application discloses a double-layer insulation-coated soft magnetic composite material with a high-thermal-conductivity network structure and a preparation method thereof. First, a surfactant is used to perform surface modification treatment on soft magnetic powder, and an Al2O3 insulation coating layer with high resistivity and high thermal conductivity is formed on the surface of the modified soft magnetic powder in situ through a sol-gel reaction. Then, the magnetic powder coated with the Al2O3 insulation layer is uniformly mixed with a composite resin doped with dendritic nano Al2O3 powder, a second thermal-conductivity shell layer is constructed on the outer layer of the magnetic powder, and a composite powder with a double-layer insulation-coated structure is formed. The obtained composite powder is sequentially subjected to granulation, compression molding and low-temperature solidification treatment, so that the target soft magnetic composite material is prepared. According to the double-layer coating process, a continuous and through thermal-conductivity network is successfully constructed in the composite material, so that the overall heat dissipation efficiency of the composite material is remarkably improved, and the current can be efficiently insulated.

This invention discloses a method for the integrated fabrication of high-current, thick copper multilayer PCB circuit boards, belonging to the field of PCB manufacturing technology. The method includes: inner core board fabrication, integrated filling and insulating layer construction, integrated conductive layer construction, multilayer stacking, and integrated lamination. This invention uses vacuum printing to force-fill high thermal conductivity composite resin into the gaps between thick copper lines, forming a flat, coplanar structure, fundamentally eliminating the filling voids and delamination defects caused by insufficient resin flow in traditional lamination processes. The outer layer circuits employ a semi-additive method, electroplating a rectangular cross-section thick copper circuit on an ultra-thin seed layer, with an etching factor ≥6.0, solving the severe side etching problem caused by thick copper etching in traditional subtractive methods. Combined with a stepped vacuum lamination process and a homogeneous resin material system, interlayer thermal stress is significantly reduced, and thermal conductivity is improved. This invention is applicable to fields such as new energy vehicles and high-power power supplies, offering advantages such as high current carrying capacity, high heat dissipation, and high reliability.

This invention relates to medicine, more particularly to dentistry, more specifically to a method of layering composite tooth restoration and means for its implementation with the use of a concept of temperature balance by M. L. Melikyan.The inventive method of the layering composite tooth restoration is proposed which is implemented with the use of a syringe for heating of composite material, acid, polishing paste and a vessel for adhesive heating, a hydro-thermic heating device for heating working parts of restoration instruments, and a magnetic-panoramic stand for panoramic disposition and holding of medical instruments.

The present invention provides a method for producing a silicone acrylic graft copolymer resin that yields a coating film with excellent resistance to repeated temperature changes. [Solution] The method for producing a silicone acrylic graft copolymer resin according to the present disclosure includes: step 1, synthesizing a water-dispersible acrylic resin by solvent polymerization in the presence of a polysiloxane to obtain a composite resin (i); step 2, adding 0.8 to 4 equivalents or more of water per equivalent of the composite resin (i) to disperse the composite resin (i) in water; and step 3, adding a water-soluble radical generator in the presence of the water-dispersed composite resin (i) to polymerize the remaining monomers to obtain a composite resin (ia).

The application relates to the technical field of composite materials, in particular to a high-conductivity thermosetting resin-based composite material and a preparation method thereof, which contains the following components in parts by weight: 50-80 parts of epoxy resin, 10-30 parts of conductive carbon nanotubes, 20-40 parts of nano silver particles, 10-20 parts of functionalized polyurethane prepolymer, 5-15 parts of polyamine curing agent, 2-8 parts of organic silane coupling agent, 5-15 parts of graphene nanosheet, 5-15 parts of aluminum borate whisker, 5-15 parts of barium titanate nanoparticles, 2-10 parts of conductive polymer microspheres, 1-5 parts of nano zinc oxide; wherein the conductive polymer microspheres comprise a core composed of polyaniline or polypyrrole, and polyurethane polymer or polyacrylate polymer wrapped outside the core; the core surface is modified by nano silver particles and gamma-aminopropyl triethoxysilane; the conductive polymer microspheres are used for providing a long-range conductive path, the nano silver particles are used for providing short-range conductive connection, and the conductive polymer microspheres and the nano silver particles form a multi-level conductive network.

This invention provides a method for preparing a halogen-free PETG label film, belonging to the field of label film preparation technology. The method includes: corona treatment of a PETG substrate layer; coating the substrate surface with a halogen-free functional coating liquid containing waterborne polyurethane acrylic composite resin, nano-inorganic modifier, and crosslinking agent; bonding the coated substrate layer and the halogen-free adhesive layer together and then sending them into a curing oven, where the functional coating and the interlayer bonding with the adhesive layer are simultaneously completed under segmented programmed temperature rise conditions, resulting in physical entanglement and chemical crosslinking at the interface; and finally, cooling and shaping to obtain the label film. This invention significantly enhances the interlayer bonding strength through a simultaneous curing and composite process. The resulting product has a light transmittance ≥91%, haze ≤2.5%, peel strength ≥8N / 25mm, and performance retention ≥90% after damp heat aging. Furthermore, the chlorine and bromine content are both ≤900ppm, meeting the halogen-free standard.

This utility model proposes a running track with flame-retardant plastic granules, relating to the field of plastic running track technology. It includes a bottom layer and a top layer. The bottom layer is adhesively bonded to the ground surface. Flame-retardant granules are formed on the top layer. A waterproof layer is provided on the outer side of the bottom layer. A light gray flexible flame-retardant roll sponge layer and a water-absorbing layer are interleaved on the outer side of the waterproof layer. A highly absorbent composite resin layer is provided on the outer side of the light gray flexible flame-retardant roll sponge layer and the water-absorbing layer. A top layer is provided on the outer side of the highly absorbent composite resin layer. Several through holes are formed on the top layer. This device, through rapid water leakage combined with high water absorption, can effectively reduce the amount of rainwater accumulating on the surface of the plastic running track in rainy weather, achieving a water-permeable effect. Simultaneously, the use of flame-retardant granules combined with the light gray flexible flame-retardant roll sponge layer can further improve the flame-retardant safety of the plastic running track in the event of a fire. Both the flame-retardant performance and the ability to reduce water accumulation are further enhanced.

The present application relates to the technical field of polyimide, in particular to a modified polyimide resin for carbon fiber composite material, and a preparation method and application thereof.Preparation raw materials include bisether anhydride type polyamide acid solution, ketone anhydride type polyamide acid solution and thermoplastic polymer solution, and the polymer in the thermoplastic polymer solution includes at least one of polyether ether ketone, polyether sulfone, polysulfone and polyphenyl sulfone.The present application can effectively reduce the viscosity while keeping the mechanical properties by modifying the polyimide resin with specific thermoplastic polymer, and the viscosity of the modified polyimide resin at 25 DEG C can be reduced to 5000 cp by selecting polyether sulfone; and the mechanical properties of the modified polyimide resin based composite material can be improved by limiting the weight ratio of the bisether anhydride type polyamide acid solution, the ketone anhydride type polyamide acid solution and the thermoplastic polymer solution to 1:(0.9-1.1):(0.3-0.8).

The application discloses a dirt-proof composite resin threading well structure and an implementation method thereof, and belongs to the technical field of threading wells. The dirt-proof composite resin threading well structure and the implementation method thereof comprise a double-section well body and a well cover, further comprise an elastic support which is arranged below the double-section well body, the double-section well body comprises a through well and a switching well, the through well is arranged above the switching well, and expansion pipe mouths are arranged around the through well, and wide-mouth pipe sleeve hoops are arranged in the expansion pipe mouths. In order to solve the problem that the size of the pipe mouth of the threading well cannot adapt to pipeline structures of different specifications when the threading well is used for threading cables or pipelines, thereby causing gaps at the notches and easily causing water seepage and pollution, when the pipelines are connected and installed, the wide-mouth pipe sleeve hoops or narrow-mouth pipe sleeve hoops can be selected and used according to the size structure and the number of the pipelines, so that the sealing performance of the pipeline interface is ensured.

The application discloses a preparation method of a force-thermal superstructure with light load bearing and laser protection, adopts a double-point lattice structure design of light metal skeleton lattice and ablation type resin matrix composite lattice nested with each other, utilizes a 3D printing forming process, combines new technical advantages of selective forming of various materials, and realizes integrated high-precision forming of the force-thermal superstructure with light load bearing and laser protection by means of finite element numerical simulation and calculation optimization. The superstructure prepared by the method improves the specific strength and specific stiffness of the structure within the design range, and simultaneously has the laser protection function, so that the method has important significance for overall weight reduction and protection.

This application provides a hot-pressing solid-state reconstruction recycling apparatus and method for thermosetting resin-based composite materials. The apparatus includes: a tunnel furnace for preheating the billet to the viscoelastic creep activation temperature; a constant-temperature roller pressing assembly, comprising several sets of upper and lower opposing mechanical rollers, which continuously press the billet directly within the furnace cavity; a cooling roller pressing assembly, which uses pressure-holding rollers to maintain the compressed shape of the billet and cooperates with an air-cooling fan assembly for forced air cooling to complete the final shaping; a conveying device located between the furnace outlet and the cooling roller pressing assembly, for connecting and smoothly conveying the billet to be cooled; and an automated control system for coordinating and controlling the heating temperature, roller pressing pressure, air cooling intensity, and mechanical roller speed to meet the process window required for viscoelastic creep. This application effectively solves the problems of fiber damage, low recycling value, high energy consumption, and serious environmental pollution associated with traditional recycling technologies.

A molded article of a composite resin containing fibers includes a base resin 1 and a fibrous filler 2 having fibrillated ends in a fiber length direction. An expression Ho×0.4≤H≤Ho is satisfied where H is a maximum height for an unbroken first plate-like test piece having a thickness of 1 to 2 mm after the test piece is kept at −10° C. for three hours and then is hit by a dropped weight of 250 g; and Ho is as same maximum height for the unbroken second plate-like test piece only made of the base resin with a thickness of 1 to 2 mm as for the first plate-like test piece. An expression So×0.4≤S≤So is satisfied where S is a Charpy impact strength (JIS K 7111) of the molded article, and So is a Charpy impact strength of the molded article only made of the base resin.

This invention belongs to the field of photosensitive materials technology, specifically relating to a multi-curing photosensitive adhesive with strong weather resistance and its preparation method. This invention overcomes the limitations of traditional photosensitive adhesives in terms of curing depth and light source compatibility. The oil phase component introduces a fluorosilicone epoxy-polyurethane acrylate composite resin and a multifunctional diluent, integrating epoxy groups, acrylate groups, and siloxane groups on the same molecular chain. Combined with a full-band composite initiator, it achieves rapid response to 365nm UV, 405nm laser, and mercury lamps. Deep cross-linking is achieved through cationic polymerization and moisture condensation, significantly improving adhesion and solvent resistance. The aqueous component uses fluorosilicone-modified polyvinyl alcohol and aminofluorosilicone-modified polyvinyl acetate as amphiphilic emulsifying stabilizers, combined with a gradient emulsification process to form a stable oil-in-water emulsion. Combined with caprolactam-blocked latent curing agents, it achieves long-term storage at room temperature. After heating and unblocking, it cross-links with hydroxyl groups, improving film density and exhibiting ultra-high storage stability and long-lasting weather resistance.

The present invention provides a manufacturing apparatus for composite resin compositions with high mechanical strength. [Solution] The apparatus for manufacturing a composite resin composition is a apparatus for kneading raw materials containing a fibrous filler and a thermoplastic resin to manufacture a composite resin composition, comprising: a first rotating body that rotates with respect to a central axis; a second rotating body arranged parallel to the first rotating body and rotating with respect to the central axis to form a kneading section that kneads the raw materials in conjunction with the first rotating body; a first temperature control unit for controlling the temperature of the first rotating body; a second temperature control unit for controlling the temperature of the second rotating body; a first cooling unit for cooling a position on the central axis of the first rotating body that faces the kneading section; and a second cooling unit for cooling a position on the central axis of the second rotating body that faces the kneading section.

This invention relates to a multifunctional bioactive dental bulk filling composite resin and its preparation method. The composite resin comprises an organic resin matrix and an inorganic filler; the organic resin matrix comprises polymerizable resin monomers and a photoinitiator system, the polymerizable resin monomers comprising dimethacrylate monomers and E-POSS; the inorganic filler comprises nMgO and sSiO2 with a silanized surface. The preparation method includes the following steps: preparing nMgO powder using a sol-gel method combined with a gradient calcination process; preparing submicron-sized sSiO2 using the Stöber method and subjecting it to surface silanization treatment to obtain silanized sSiO2; mixing the polymerizable resin monomers, E-POSS, and the photoinitiator system, stirring in the dark until a homogeneous resin matrix is ​​formed; adding the obtained nMgO and silanized sSiO2 to the resin matrix in a specific ratio and mixing and dispersing evenly to obtain an uncured paste-like composite resin.

This application relates to the field of film packaging technology, and particularly to a high-toughness biaxially oriented polyglycolic acid (PGA) film and its preparation method. The film has a three-layer structure: the upper and lower surface layers comprise an anti-sticking masterbatch and a PGA composite resin, and the core layer comprises a PGA composite resin. The composite resin comprises PGA, a PGA toughening agent, a hydroxyl fatty acid ester, a chain extender, and an antioxidant. The PGA toughening agent is a copolymer polymerized from ε-caprolactone, glycolide, succinic acid, and butanediol, and the hydroxyl fatty acid ester is poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) with a 3-hydroxyhexanoate unit molar content ≥25%. This application achieves synergistic toughening through the toughening agent and PGA, combined with the chain extender and antioxidant, significantly improving film toughness and processing stability while ensuring high barrier properties, high transparency, and high strength, making it suitable for high-requirement packaging applications.

This invention discloses a resin, its preparation method, and porous carbon and silicon-carbon anode materials. The resin comprises an in-situ bonded polymeric resin and a cyclic oligomer. The cyclic oligomer is distributed within the polymeric resin as a rigid framework. At least one of the following interactions exists between the polymeric resin and the cyclic oligomer: intermolecular hydrogen bonding, intermolecular π-π stacking, and covalent bonding. By introducing a cyclic resin oligomer with high structural rigidity as a molecular-scale supporting unit, it is in-situ bonded to linear or branched polymeric resin chains during polymerization or curing, forming a composite resin system with a stable rigid framework. During subsequent carbonization, this rigid structure effectively inhibits resin shrinkage, maintains morphological stability, and promotes the escape of volatiles during pyrolysis, forming interconnected channels. This allows for the controllable construction of a pore structure from micropores to mesopores without relying on any external template.