461 results about "Resin composite" patented technology

The invention discloses an in-situ biomineralizable mineral-PHA water-based seed coating based on microphase separation and soil water potential response and a preparation method and application thereof, and belongs to the technical field of green coatings, the in-situ biomineralizable mineral-PHA water-based seed coating comprises a structural mineral skeleton, a PHA and resin composite matrix and a pore-forming disintegrating agent. According to the invention, a resin enrichment layer and island microphase structure is innovatively constructed, and the contradiction between poor wear resistance and difficult disintegration of a bio-based material is effectively solved. Compared with the prior art, the wear-resistant and dust-reducing coating has the advantages that the wear-resistant and dust-reducing performance far better than that of the traditional PHA coating is realized by utilizing an interface enhancement effect under the condition of equal or even lower polymer dosage; meanwhile, the coating is endowed with a sensitive soil water potential response'switch ', so that dry-state tough seed protection and wet-state rapid disintegration are ensured, and germination is not hindered. Organic components of the composition can be biodegraded in aerobic soil, inorganic components are natural minerals, the environmental compatibility is good, the composition has the advantages of high performance and low cost, and an excellent seed treatment scheme is provided for green agriculture.

The application discloses a furan resin composite material added with graphene and a preparation method thereof, and belongs to the technical field of furan resin composite material preparation. The preparation method of the furan resin composite material added with graphene comprises the following steps: step one, furan resin is added into a container, a curing agent is added during stirring, and continuous stirring is carried out to obtain a premixed resin; step two, a modified toughening agent is slowly added into the premixed resin, heating and continuous stirring are carried out to obtain a toughening mixture; step three, modified graphene is added into ethanol, ultrasonic dispersion is carried out, the toughening mixture is slowly dripped, high-speed stirring is carried out to obtain a composite mixture, the composite mixture is subjected to vacuum degassing, and then is added into a mold, solidification is carried out to obtain the furan resin composite material added with graphene. The composite material prepared by the method has excellent heat conductivity, flame retardancy and toughness.

The invention discloses a preparation method of a silicon dioxide-epoxy resin composite material, the acoustic impedance of the composite material is controlled by adjusting the volume fraction of the silicon dioxide-epoxy resin composite material, an ultrasonic transducer prepared by utilizing the composite material and a preparation process thereof, and an imaging system designed by utilizing the ultrasonic transducer. By designing the matching layer and the backing layer with specific acoustic impedance, seamless fusion of ultrasonic imaging and photoacoustic imaging is realized, the transducer has ultrahigh sensitivity, broadband characteristic and high optical transparency, shows bimodal imaging capability of high contrast and high resolution, and solves the problem that a traditional transparent ultrasonic transducer is insufficient in acoustic performance.

Disclosed is a middle frame assembly, including a middle plate and a frame disposed around an outer edge of the middle plate, where the middle plate includes a first carbon fiber reinforced resin composite material base body and a first metal plating layer compounded on a surface of the base body. Some embodiments of this application further provide a preparation method for a middle frame assembly and an electronic device in the middle frame assembly. Some embodiments of this application use a carbon fiber reinforced resin composite material as a middle plate base body of the middle frame assembly.

The invention relates to the technical field of fiber reinforced resin-based composite materials, and discloses a basalt fiber epoxy resin composite material as well as a preparation method and application thereof. Comprising the following steps: carrying out oxygen plasma treatment and dopamine bionic liquid deposition treatment on basalt fibers, dipping the basalt fibers in a mixed coupling agent solution, and coating the basalt fibers with nano TiO2 sol to obtain nano roughened basalt fibers; mixing bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, hyperbranched polyesteramine and ionic liquid modified boron nitride nanosheets to obtain resin A; mixing an epoxy curing agent with a curing accelerator to obtain resin B; and mixing the resin A and the resin B to obtain a mixed material, and infiltrating the nano roughened basalt fibers in the mixed material to obtain the basalt fiber epoxy resin composite material. After the basalt fiber is subjected to bionic multi-stage interface treatment, the basalt fiber is matched with the modified epoxy resin, so that the interface strength, the mechanical property and the weather resistance of the composite material are remarkably improved, and the composite material has a relatively good application scene.

The invention discloses a long glass fiber reinforced polypropylene resin composite material and a preparation method thereof, and belongs to the field of polymer composite materials. The composite material comprises the following raw materials in parts by weight: 50-70 parts of a polypropylene matrix, 20-40 parts of long glass fibers, 2-5 parts of a composite interface modifier, and maleic anhydride grafted polypropylene and an amino silane coupling agent which are compounded according to a weight ratio of 3: 1, and 0.5 to 2 parts of hydrophobic modified nano silicon dioxide. The composite material is prepared through the processes of glass fiber surface pretreatment, multi-component synergistic mixing and precise extrusion molding. According to the invention, through the chemical bonding effect of the composite interface modifier and the surface of the glass fiber, the interface bonding force between the glass fiber and a PP matrix is obviously improved, and meanwhile, the nanoscale damp-heat-resistant auxiliary agent is introduced to construct an anti-permeation barrier, so that the technical problems that the traditional long glass fiber reinforced PP composite material is poor in damp-heat resistance and large in mechanical property fluctuation are solved. After the prepared composite material is aged for 1000 hours in the environment of 85 DEG C / 85% RH, the impact strength loss rate is smaller than or equal to 10%, the tensile strength is larger than or equal to 85 MPa, and the composite material can be widely applied to the fields of automobile exterior trimming parts, household appliance wading parts and the like.

A vehicle body structural member is formed from a fiber-reinforced resin composite. The vehicle body structural member includes a break scheduled part. The break scheduled part is provided on a load input surface to which a collision load is expected to be input. The break scheduled part is configured to, when the collision load is input, undergo a brittle fracture and divide the load input surface into a first region and a second region on both sides respectively in a predetermined first direction. When the collision load is input, a torsion is generated in each of the first region and the second region across the break scheduled part have torsions.

The application belongs to the field of epoxy resin composites, and specifically provides a high-strength low-density epoxy SMC composite material and a preparation method thereof, which is prepared by the following steps: S01. Taking a PVC core plate, gluing after grooving, then laying a fiber cloth, vacuumizing under negative pressure after film covering, then pouring a pre-impregnation liquid, and placing to obtain a pre-cured composite plate; S02. Taking the pre-cured composite plate, placing overnight after mold pressing treatment, and then obtaining after demolding and edge trimming treatment; the pre-impregnation liquid preparation step comprises the following: mixing an active diluent, an accelerator, modified microspheres and a filler, first adding an epoxy resin, stirring, then adding the remaining amount of epoxy resin, and then adding a curing agent and a demolding agent, and continuously mixing to obtain the pre-impregnation liquid; the modified microspheres are used as a pre-impregnation liquid additive component, and the prepared SMC composite material product has a density ≤1.57 g / cm 3 , an impact strength ≥84.5 KJ / m 2 , and good flame retardance.

The invention relates to the technical field of resin composite materials, in particular to a preparation method of a high-strength epoxy resin composite material for unmanned aerial vehicle structural parts, and the high-strength epoxy resin composite material comprises the following raw materials in parts by weight: 100-120 parts of bisphenol A epoxy resin, 80-90 parts of a curing agent, 1-1.5 parts of an accelerant, 20-25 parts of a composite additive, 3-8 parts of a silane coupling agent and 0.1-0.5 part of an antioxidant. According to the invention, mechanical support is provided through high strength and high modulus characteristics of boron nitride whiskers in the composite additive, surface impurities are removed through pretreatment, surface performance is optimized, the binding force between the boron nitride whiskers and resin is enhanced, cracks are deflected by the whiskers under external force, an expansion path is increased to consume energy, and meanwhile, zinc powder is coated by a complex of tannic acid and iron in the powder, so that the zinc powder is more stable in performance. Phenolic hydroxyl groups and epoxy resin form hydrogen bonds, interface bonding force is enhanced, local stress is dispersed, microcrack propagation is inhibited, and fracture toughness is improved.

The invention relates to the technical field of composite materials, and particularly discloses a boric acid modified ZSM-5 molecular sieve hybrid resin composite material and a preparation method thereof. The preparation method comprises the following steps: synthesizing a ZSM-5 molecular sieve with an MFI topological structure through hydrothermal crystallization, and carrying out boric acid modification; and then, by taking the molecular sieve as a functional auxiliary agent, adding acrylic acid, a cross-linking agent, an initiator and the molecular sieve into a high-pressure reaction kettle, and carrying out polymerization reaction under a nitrogen protection condition to obtain a product, namely the boric acid modified ZSM-5 molecular sieve hybrid resin composite material. The stable framework structure of the molecular sieve at high temperature and high pressure and rich Si-OH hydrophilic groups in pore channels can solve the problems of insufficient gel strength and non-ideal compression resistance and water absorption performance of the traditional super absorbent resin material. Meanwhile, abundant acid sites on the surface of the ZSM-5 molecular sieve modified by boric acid have excellent adsorption capacity on gases such as NH3, so that the technical problem of poor deodorization effect of the traditional water-absorbent resin can be solved, and the ammonia removal and deodorization performance of the super absorbent resin material is further improved.

This invention provides a carbon fiber reinforced polymer (CFRP) composite material that enhances the anchoring effect of the metal layer to the CFRP substrate and improves adhesion. [Solution] The CFRP composite material comprises a base material made of CFRP, a first metal layer laminated on the surface of the base material, and a second metal layer laminated on the surface of the first metal layer. The surface of the base material has carbon fiber cutting grooves formed to a depth in which the carbon fibers in the base material are actually cut, and the first metal penetrates into the grooves and is fixed therein. The manufacturing method includes (1) forming the cutting grooves, (2) laminating the first metal layer by thermal spraying (with penetration into the grooves), and (3) laminating the second metal layer by plating.

A metal-resin composite that has a structure in which a plurality of metal particles are fixed to resin particles and, in the range of pH 3 to pH 10, the maximum value of the zeta potential is at least 5 mV and the minimum value is −5 mV or less. In this metal-resin composite, it is preferable that, in the range of pH 3 to pH 10, the difference between the maximum value and the minimum value of the zeta potential is at least 20 mV; and it is further preferable that the point of zero charge of the zeta potential is in the range of pH 3.5 to pH 9.0. This metal-resin composite can be used in immunoassays and in immunoassay reagents as a labeled substance by making antigens or antibodies adhere to the surface of the metal-resin composite.

The invention relates to the technical field, in particular to an amino resin composite material for a mulching film and a preparation process of the amino resin composite material. The method comprises the following steps: firstly, preparing a melamine-urea-formaldehyde prepolymer; the preparation method comprises the following steps: sequentially adding hydroxymethylated lignin, polydopamine nanoparticles synergistically grafted with furandialdehyde and lignin through a triazine structure, aminated carboxyl nano-cellulose and 2, 5-diformyl furan, and mixing; and adding a latent acid source to carry out acidic polycondensation, terminating the reaction, adding urea, and filtering. According to the invention, through component design and process control, stable chemical crosslinking and interface bonding are formed among the components, and the obtained composite material has high strength, high toughness, excellent tear resistance and puncture resistance, and excellent ultraviolet aging resistance and damp-heat stability, and can realize the balance between the service life of the mulching film and controllable degradability.

The invention belongs to the technical field of circuit board materials, and discloses a glass fabric / resin composite dielectric substrate and a preparation method and application thereof, the glass fabric / resin composite dielectric substrate comprises a glass fabric base layer and a resin layer covering the surface of the glass fabric base layer; the resin layer is formed by a resin matrix and nanofiller dispersed in the resin matrix, and the nanofiller comprises modified silicon dioxide aggregates, modified silicon dioxide particles and hollow silicon dioxide microspheres which are sequentially distributed from inside to outside in the thickness direction of the resin layer. According to the glass fabric / resin composite dielectric substrate, the three-dimensional gradient distribution of the modified silicon dioxide aggregate, the particles and the hollow microspheres is constructed in the resin layer, so that the dielectric constant difference between the glass fabric and the resin is effectively offset, the dielectric uniformity is remarkably improved, and signal interference caused by dielectric mutation is avoided; and meanwhile, differential Skew and transmission line impedance fluctuation are greatly reduced, the integrity of high-speed signal transmission is guaranteed, and the scene requirements of ultra-high-speed communication and the like are met.

The invention relates to a sealing material and a decoloring kettle applied to intermediate synthesis, and belongs to the technical field of composite materials. The compatilizer with a phosphoric acid structure is prepared, the compatilizer is used for treating and modifying the aluminum filler, a quaternary ammonium salt structure and a long-chain alkyl structure are introduced to the surface of the modified aluminum filler, the quaternary ammonium salt structure can generate electrostatic attraction with sulfonic acid groups in perfluorosulfonic acid resin, and the long-chain alkyl structure can generate long-chain alkyl groups in the perfluorosulfonic acid resin; the long-chain perfluoroalkyl structure can be entangled with a polytetrafluoroethylene resin molecular chain, and the two effects are synergistic, so that the binding capacity of the aluminum filler and the polytetrafluoroethylene-perfluorosulfonic acid resin composite material is effectively improved, and a polytetrafluoroethylene phase and a perfluorosulfonic acid resin phase can be bridged; the overall mechanical property of the composite material is effectively improved.

The invention relates to the technical field of composite material preparation, and particularly provides a preparation method of a heat shield support, which comprises the following steps: preparing a prepreg by using a carbon fiber reinforced phthalonitrile resin composite material, cutting the prepreg according to the heat shield support to form a net size sample plate material, and manufacturing a forming mold of the heat shield support, a limiting device can be used for limiting a mold closing gap of a split female mold, a net-size sample plate material is laid at the position of a male mold cavity of a forming mold, the forming mold is subjected to cold mold closing, meanwhile, the limiting device is used for limiting the mold closing gap of the split female mold, the forming mold subjected to cold mold closing is heated and subjected to heat preservation, and after the limiting device is detached, heat mold closing operation is conducted on the forming mold. And demolding after curing. According to the method, in the forming process, a cold closing mold limiting device and a pressurization conversion device are additionally arranged, rapid pressurization of a heat closing mold is achieved, the problems that resin viscosity is low and a process window is narrow are solved, and the high-temperature-resistant heat shield support high in size precision and free of internal quality defects is manufactured.

To provide a resin composite member capable of easily and surely sealing a resin molded body without a gap.SOLUTION: The ship-shaped portion 2324 includes a pair of side surface side walls, a side 23b, and one end surface side 24b and another end surface side 23b provided between the pair of side surface side walls on the one side. The one end surface side 23c and the other end surface side 24c have a recessed shape inclined so as to be recessed toward the intermediate portion in a side view of the ship-shaped portion 2324. The ship-shaped portion 2324 includes: 23c 24c, the covering material 21 is composed of one sheet material, and is continuously joined to one end surface 23c, the 24c and each side surface 23b, and a region adjacent to the end surface 23c, the 24c in the 24b, and is brought into close contact with one end surface 23c, the 24c and each side surface 23b, the without clearance. 24b.SELECTED DRAWING: Figure 2

The invention relates to the field of buildings, in particular to a reinforced concrete member manufacturing method and a post-cracking bending rigidity calculation method.The reinforced concrete member manufacturing method comprises the following steps that S1, a steel reinforcement framework is fixed to the set position of a concrete pouring mold, and a reinforced area of a concrete body is determined; s2, determining structural parameters of the reinforcing grooves and the reinforcing ribs; s3, the foam board is cut to enable the shape of the foam board to correspond to the shape of the reinforcing groove, and the foam board is fixed to the position, corresponding to the reinforcing area, in the concrete pouring mold; s4, concrete is poured into the concrete pouring mold, a concrete main body is formed after the concrete is cured and solidified, and after the concrete main body is demolded, the internal foam plate is emptied to form a reinforcing groove; and S5, reinforcing ribs are inserted into the reinforcing grooves, the reinforcing grooves are filled with UHPC, and machining of the concrete member is completed after maintenance. The bearing capacity and durability of the reinforcing system are improved, meanwhile, the glass fiber reinforced resin composite material in the retired wind power blade is applied to the reinforcing system, and the reinforcing cost is reduced.

The invention discloses a safety shoe toe cap based on a carbon fiber / MXene high-performance resin composite material and a preparation method of the safety shoe toe cap, and belongs to the technical field of high-performance composite materials and individual protection equipment. The safety shoe toecap is prepared from the following raw materials in parts by mass: 10 to 50 parts of recycled short carbon fiber pretreated by a first surface modifier, 40 to 80 parts of macromolecular resin, 0.1 to 2 parts of a second surface modifier, 5 to 10 parts of a compatilizer, 5 to 20 parts of a flexibilizer, 0.1 to 1 part of a stabilizer and 1 to 5 parts of nano filler for later use, the material is prepared through a banburying and mixing-granulation injection molding process. Compared with a common layering hot-pressing manufacturing technology in the prior art, the method has the advantages that the process is simple, control is easy, the production efficiency is high, and the obtained safety shoe toecap product is excellent in mechanical strength, good in stability and good in impact resistance and meanwhile has stable and lasting antistatic performance.

Provided is a fiber-reinforced resin composite material containing a thermoplastic resin composition (X) and an inorganic fiber material (Y), in which the thermoplastic resin composition (X) contains a thermoplastic resin and a phosphorus-based flame retardant, the phosphorus-based flame retardant contains an intumescent flame retardant, and the inorganic fiber material (Y) has an elongation at maximum load of 5% or less. It is possible to provide a fiber-reinforced resin composite material having both high flame shielding property and strength against shock waves.

The invention provides a method for improving the high-temperature interface strength of a quartz fiber reinforced polyimide resin composite material. The method comprises the steps of fiber cleaning, fiber surface activation, fiber surface grafting treatment and composite material preparation. Taking a quartz fiber reinforced PMR type polyimide resin composite material as an example, the bending strength of the composite material prepared by the method is greater than or equal to 373.5 Mpa under the test condition of 350 DEG C / 20 min, and is improved by 46%; the interlayer shear strength is greater than or equal to 34.5 MPa and is improved by 43%, and the dielectric constant is less than or equal to 3.40. The method solves the problems of poor interface bonding strength, low mechanical strength and poor structural stability of the quartz fiber reinforced polyimide resin-based composite material under the long-time high-temperature working condition, and is simple, easy to operate and suitable for batch production and application.

Provided are a resin composition, a cured product, a prepreg, a metal foil-clad laminate, a resin composite sheet, and a printed wiring board. The resin composition contains a polymaleimide compound (A) and a compound (B) containing two or more polymerizable carbon-carbon unsaturated double bonds. The polymaleimide compound (A) contains, as reaction raw materials (1), an aromatic amine compound (a1) having one or more and three or less alkyl groups on an aromatic ring, an aromatic divinyl compound (a2) having two ethenyl groups, and maleic anhydride.

A resin composition containing a resin (A) represented by formula (T1-1), a thermoplastic elastomer (B), and a thermosetting compound (C) other than the resin (A), in which a parameter [beta] calculated by formula ([beta]) in the resin (A) is 0.20-3.00. In formula (T1-1), R represents a group containing a structural unit represented by formula (Tx). In the parentheses in formula (beta), the integral value between the corresponding chemical shift values in 1H-NMR is represented. A cured product using the resin composition, a prepreg, a metal foil-clad laminate, a resin composite sheet, a printed wiring board, and a semiconductor device.

This biomass-resin composite has non-chemically modified biomass nanofibers dispersed in at least one resin, and does not contain, as a dispersant, a dispersant soluble in water or a water-soluble alcohol other than the biomass nanofibers.

The invention relates to a negative dielectric constant polyaniline / epoxy resin composite material and a preparation method thereof. The preparation method comprises the following steps: step 1, pretreating polyaniline powder; step 2, pre-dispersing and mixing the pretreated polyaniline powder and bisphenol F epoxy resin; step 3, performing curing agent addition and degassing treatment on the pre-dispersed and mixed mixture; 4, the degassed mixture is subjected to mold filling and preliminary forming; step 5, carrying out electric field auxiliary curing on the primarily formed mixture; and step 6, carrying out post-treatment and sample preparation on the polyaniline / epoxy composite material subjected to electric field auxiliary curing. The dielectric property and the reliability of the composite insulating material can be remarkably improved.

The invention relates to the technical field of battery pack shells, in particular to a battery pack shell and a preparation method thereof.The preparation method comprises the steps that a ceramic resin composite material and a ceramic composite material are prepared; uniformly stirring the polyphenyl ether resin, the flame retardant, the zirconium boride and the antioxidant to obtain a mixture; feeding the mixture into a double-screw extruder, and performing side feeding, extrusion and granulation on the modified carbon fibers to obtain an inner matrix material; melting the inner matrix material, injecting into a mold, cooling to room temperature, and taking out to obtain a primary product of the battery pack shell; and sequentially spraying the ceramic resin composite material and the ceramic composite material on the surface of the primary product of the battery pack shell by adopting a plasma spraying method to prepare the battery pack shell. According to the invention, the surface of the resin matrix is continuously covered with the ceramic resin connecting layer and the ceramic protective layer, so that the ablation resistance and the friction resistance of the battery pack shell are greatly improved.

The present invention relates to a solvent-free thermosetting quantum dot resin composition, a quantum dot resin composite prepared therefrom, an LED package and a display device employing the same and, specifically, to a solvent-free thermosetting quantum dot resin composition having excellent ability to maintain optical characteristics even after long-term driving of a display, a quantum dot resin composite prepared therefrom, an LED package and a display device employing same.

The invention relates to the technical field of composite material preparation and curing molding, in particular to a preparation method of a carbon fiber bismaleimide resin composite material. The method comprises the following steps: curing a carbon fiber bismaleimide resin prepreg under vacuum and pressure conditions, wherein the carbon fiber bismaleimide resin prepreg is prepared from a resin system containing an allyl compound, bismaleimide resin and a thermoplastic toughening agent; the curing procedure comprises the following steps: (1) raising the temperature to 130-150 DEG C and keeping the temperature; (2) continuously raising the temperature to 180 + / -5 DEG C and keeping the temperature; (3) continuously raising the temperature to 200-220 DEG C and keeping the temperature to complete the curing reaction; and cooling and demolding. The structure prepared by the method has relatively good energy dissipation capability when bearing an impact load, so that the damage expansion trend of the material is effectively controlled, and a relatively small damage area after impact is shown.

The present invention provides a press laminate for reducing manufacturing cost and manufacturing a metal-fiber reinforced resin composite molded product with high precision and in a short time, and a post-press laminate obtained by press molding the press laminate. The press laminate includes: a first fiber reinforced resin prepreg layer; a resin foam layer disposed on the first fiber reinforced resin prepreg; a metal layer disposed on the resin foam layer, composed of a punched metal; and a second fiber reinforced resin prepreg layer disposed on the metal layer.

The invention discloses a composite flame retardant, a preparation method and application of the composite flame retardant in a thermoplastic resin composite material, and the preparation method of the composite flame retardant comprises the following steps: fully mixing alkali metal chromate, soluble copper salt, soluble aluminum salt, an organic solvent and deionized water to obtain a mixed solution; cooling, washing and filtering the mixed solution to obtain a precursor CuAl2 (CrO4) 4; the precursor CuAl2 (CrO4) 4 is calcined at the temperature of 720-800 DEG C for 20-24 h, and a calcined product is obtained; and uniformly mixing the calcined product with decabromodiphenyl ethane to prepare the composite flame retardant. The composite flame retardant has excellent flame retardant property, and the flame retardant effect of the thermoplastic resin composite material can be remarkably improved, so that the application requirements of the thermoplastic resin composite material in more fields are met.