673 results about "Epoxy resin composite" patented technology

The invention discloses a high-temperature-resistant epoxy resin composite material and a preparation method thereof, and relates to the technical field of composite materials. The high-temperature-resistant epoxy resin composite material is prepared from the following raw materials in parts by weight: 70 to 80 parts of modified epoxy resin, 8 to 15 parts of high-temperature-resistant modifier, 15 to 30 parts of curing agent, 3 to 8 parts of nano reinforcing filler, 1 to 3 parts of coupling agent, 3 to 6 parts of carbon fiber, 2 to 5 parts of nano titanium dioxide, 5 to 10 parts of organic silicon rubber, 1 to 3 parts of conductive agent, 3 to 7 parts of flame retardant and 2 to 4 parts of zinc borate. The high-temperature-resistant epoxy resin composite material has outstanding advantages and strong thermal stability, and can bear high temperature; mechanical performance is excellent, and firmness and durability are achieved; the self-repairing capability is achieved, and the service cycle can be prolonged; the anti-permeability is good, and gas and liquid can be effectively blocked; the surface is smooth, the friction coefficient is low and the application prospect is wide.

The invention relates to the technical field of epoxy resin composite materials, in particular to an epoxy resin-based composite material and a preparation method thereof. The epoxy resin-based composite material comprises modified carbon fibers and an epoxy resin base material impregnated on a modified carbon fiber matrix, and the epoxy resin base material comprises the following raw materials in parts by weight: 80-100 parts of epoxy resin, 4-18 parts of a toughening elastomer, 24-45 parts of a curing agent and 1-3 parts of an accelerant. The carbon fibers are subjected to surface grafting hyperbranched molecular modification, so that the interface action between the modified carbon fibers and an epoxy resin matrix can be remarkably enhanced, and meanwhile, the high strength and high temperature-resistant stability of the carbon fibers are utilized, so that the epoxy resin-based composite material has good toughening, reinforcing and temperature resistance improving effects.

The invention provides a bismuth oxide-based epoxy resin composite material with a radiation shielding function as well as a preparation method and application of the bismuth oxide-based epoxy resin composite material. According to the preparation method disclosed by the invention, the bismuth oxide is subjected to surface modification, and after surface grafting modification by the coupling agent, the surface of the bismuth oxide is changed from strong hydrophilicity to strong hydrophobicity, so that the dispersity and interfacial compatibility of the bismuth oxide in an organic medium are remarkably improved. Secondly, preparing the composite material from the modified bismuth oxide, epoxy resin and a curing agent through a mechanical blending-vacuum defoaming combined process. On one hand, bismuth oxide, epoxy resin and a curing agent are uniformly mixed through mechanical blending; on the other hand, bubbles generated in the blending process are removed through vacuum negative pressure. The bismuth oxide in the composite material is uniformly distributed, no bubble exists in the body, and the surface is smooth and complete, so that the composite material has excellent gamma-ray shielding performance and good mechanical property. The process is simple, the yield is high, the product property is stable, and good economic benefits and environmental benefits are achieved.

The invention discloses a preparation method of a Mg (OH) 2 / polydopamine multi-scale synergistic modified carbon fiber / epoxy resin composite material, and relates to the technical field of composite material preparation, and the preparation method comprises the following steps: S1, preparing a material solution and equipment; s2, preparation of the polydopamine modified carbon fiber; s3, preparing the Mg (OH) 2 / polydopamine multi-scale synergistic modified carbon fiber; and S4, preparing the Mg (OH) 2 / polydopamine multi-scale synergistic modified carbon fiber / epoxy resin composite material. Nano Mg (OH) 2 is introduced to the surface of the polydopamine modified carbon fiber by taking a coordinate bond as an acting force, so that an organic-inorganic combined three-dimensional structure interface layer is formed, and meanwhile, the wettability and the bonding effect between the carbon fiber and a matrix are improved by the method, so that the bending property of the composite material is more excellent; the method for introducing nano Mg (OH) 2 through coordinate bonds is simple, rapid and efficient, the original structure of the carbon fiber cannot be damaged, and complex operations such as chemical grafting and oxidation treatment are avoided.

The present invention relates to the technical field of composite materials. Provided are a glass fiber-reinforced epoxy resin composite material and a preparation method therefor. In the present invention, an epoxy silane coupling agent solution is used for performing surface modification on glass fibers. An epoxy silane coupling agent contains a hydrolyzable group and an epoxy group. Silicon hydroxyl generated when the hydrolyzable group is hydrolyzed can be connected to the glass fibers, so as to effectively modify the surfaces of the glass fibers. The epoxy group can react with an epoxy resin matrix, thereby improving the infiltration effect of the epoxy resin on the glass fibers and improving the bonding performance of the interface of the glass fiber-reinforced epoxy resin composite material, and thus improving the mechanical properties of the glass fiber-reinforced epoxy resin composite material. The epoxy resin is cured and modified by using a functional curing agent or nanoparticles, so as to improve the ductility or strength of the epoxy resin, thereby improving the mechanical properties of the prepared glass fiber-reinforced epoxy resin composite material.

The invention discloses a glass fiber reinforced epoxy resin composite material and a preparation method thereof, and relates to the technical field of composite materials, and the preparation method comprises the following steps: carrying out organic solvent immersion treatment, cleaning and drying on glass fibers to obtain pretreated glass fibers; respectively carrying out phytic acid modification treatment on the pretreated glass fibers and hollow alumina microspheres; performing plasma surface treatment on the glass fibers and the hollow aluminum oxide microspheres subjected to the phytic acid modification treatment; mixing and dispersing epoxy resin, a curing agent, the glass fibers subjected to plasma surface treatment and the hollow aluminum oxide microspheres according to a preset mass ratio; carrying out vacuum degassing on the mixture; and injecting the degassed mixture into a mold for step-by-step curing. The preparation method has the beneficial effects that active groups are introduced to the surfaces of the glass fibers through phytic acid treatment, the number of the active groups is further increased by combining plasma surface treatment, and the interface bonding capacity of the glass fibers and an epoxy resin matrix is remarkably improved.

The invention relates to a degradable epoxy resin composite material with an adjustable curing speed, and a preparation method and a mild total recycling method thereof. Existing degradable epoxy resin has the problems of high cost, harsh degradation conditions and the like, and is difficult to meet the requirements of different application scenes on curing speed and temperature at the same time. The invention provides an epoxy resin composite material which comprises curing agent components (an epoxy resin amine curing agent and an ester-containing polythiol curing agent) and epoxy resin components (glycidyl ether epoxy resin, glycidyl amine epoxy resin and glycidyl ester epoxy resin). The cured composite material can be fully recycled through catalytic degradation under mild conditions by using a lewis acid and an amino group breaking ester bond mechanism, and the degradation product can be directly used as a curing agent, a toughening agent and a chain extender. The epoxy resin composite material disclosed by the invention not only has adjustable curing speed and high use performance, but also realizes environmental friendliness and resource recycling, and provides a new solution for sustainable development of epoxy resin.

The invention discloses a modified amine curing agent and a preparation method thereof, and an epoxy resin composite material and a preparation method thereof, and belongs to the field of resin and composite materials. According to the curing agent, a C2-C8 alkyl chain is grafted to a methylene site of 4, 4 '-diaminodiphenylmethane (MDA) through free radical substitution and alkylation reaction, and a molecular structure with a flexible alkyl chain and a rigid benzene ring is formed. The preparation method comprises the following two steps: generating a halogenated intermediate from MDA and a halogen simple substance under certain reaction conditions, alkylating the halogenated intermediate with a Grignard reagent (RMgX), and purifying. The curing agent and epoxy resin are compounded, heated and cured, so that the epoxy resin composite material has relatively high impact strength and fracture toughness, has good tensile strength and hardness, has double functions of reinforcing and toughening, and solves the problem that reinforcing and toughening of traditional epoxy resin are difficult to be compatible; the method is suitable for the fields of aerospace, composite material adhesives and the like with harsh requirements on mechanical properties.

The invention discloses a preparation method and application of a pulsed electric field induced high-thermal-conductivity epoxy-based composite material, and relates to the technical field of preparation of epoxy resin composite materials. The invention aims to solve the problem that the thermal conductivity of the epoxy resin-based composite material is not obviously improved under the condition of low filling amount at present. According to the method, the h-BN is induced to be oriented in an epoxy resin matrix by utilizing a pulsed electric field, then the epoxy resin is cured, and the oriented structure is reserved. Compared with blindness of construction of a direct doping heat conduction path, the h-BN is enabled to face a specific direction by utilizing an induction effect of a pulsed electric field, so that the probability of mutual lap joint of the h-BN is increased, and construction of the heat conduction path is promoted. The preparation method and application of the high-thermal-conductivity epoxy composite material induced by the pulsed electric field can be obtained.

The invention discloses a preparation method of a WS2 / MXene / HBPSi synergistically enhanced epoxy resin composite material. The preparation method specifically comprises the following steps: preparing a WS2 / MXene hybrid from few-layer MXene powder, WCl6 and a sulfur source precursor; the preparation method comprises the following steps: uniformly mixing tetraethoxysilane, neopentyl glycol and triethanolamine, and carrying out gradient heating reaction to obtain HBPSi; epoxy resin EP is used as a resin matrix, DDS is used as a curing agent, a WS2 / MXene hybrid is used as a lubricating additive, HBPSi is used as a toughening agent, and the epoxy resin composite material is prepared by combining a melt blending process with a staged heating curing method. According to the method, the toughness and the interface bonding strength of the material are remarkably improved by introducing HBPSi, the friction coefficient of the material is effectively reduced and the wear resistance is improved through the synergistic effect of WS2 and MXene, and cooperative regulation and control of structural strengthening and friction performance improvement are achieved.

Disclosed are a steel fiber composite intelligent bar with a sheathing optical cable embedded in an inner core of a rebar, and a fabrication method thereof. The steel fiber composite intelligent bar includes the sheathing optical cable, the rebar, a winding layer, and tightening sheaths, wherein the sheathing optical cable comprises a glass fiber core, a polyimide coating layer, and a polyurethane wrapping layer that are stacked sequentially from inside to outside; the rebar is provided with a notch groove along a length direction; and the sheathing optical cable is embedded in the notch groove in parallel; the winding layer is wound around an outer surface of the rebar, and the winding layer is made of an epoxy resin composite fiber; and the tightening sheaths comprise a first tightening sheath and a second tightening sheath which are sleeved at two ends of the winding layer, respectively.

The invention discloses a polyimide and epoxy resin composite modified fluorocarbon resin coating and a preparation method thereof, and the polyimide and epoxy resin composite modified fluorocarbon resin coating comprises the following components in percentage by weight: 0.4-0.8% of monomer diamine, 0.4-0.8% of monomer dianhydride, 60-70% of N, N-dimethylacetamide, 10-20% of epoxy resin, 0.2-0.5% of epoxy curing agent, 1-2% of fluorocarbon resin curing agent and 15-25% of fluorocarbon resin. The preparation method comprises the following specific steps: reacting monomer diamine and dianhydride in N, N-dimethylacetamide, sequentially compounding with epoxy resin and an epoxy curing agent to obtain a composite modifier, and adding the composite modifier and a fluorocarbon resin curing agent into a fluorocarbon resin solution to obtain the polyimide and epoxy resin composite modified fluorocarbon resin coating. Compared with an existing fluorocarbon resin coating, the performance of the fluorocarbon resin coating is greatly improved in the aspects of mechanical performance, heat resistance, adhesive force and the like.

The invention provides an efficient composite material manufacturing method based on front-end polymerization initiation point design, relates to manufacturing of forming materials containing macromolecular substances, and belongs to the technical field of common technological processes of processing and batching of macromolecular materials. According to the invention, the epoxy resin composite material with excellent mechanical properties is rapidly prepared with low energy consumption by preparing the epoxy resin front-end polymerization solution and initiating front-end polymerization at multiple points. The method has the advantages of being high in designability, easy to operate and the like, and rapid and energy-saving manufacturing of the epoxy resin and the composite material thereof is achieved while the mechanical property is maintained through multi-point initiation of front-end polymerization. The method has a wide application prospect in batch production of epoxy resin and composite materials and manufacturing of large-scale structures.

The invention discloses a simple and efficient glass fiber fabric surface fluorination method, and belongs to the technical field of glass fiber fabric surface structure regulation and control. The fluorination method for the surface of the glass fiber fabric comprises the following steps: sequentially dipping glass fibers in a dopamine hydrochloride solution and a fluorine-containing silane coupling agent solution to obtain modified glass fibers. Firstly, polydopamine (PDA) is used for treating the surface of the fiber, then a fluorine-containing silane coupling agent is used for conducting structural design on the surface of the glass fiber, and comprehensive improvement of the interface bonding strength and the insulating property of the glass fiber epoxy resin composite material is achieved. The surface flashover voltage and the breakdown field strength of the composite material provided by the invention are remarkably improved, the treatment method is simple and convenient, and industrial batch preparation of the high-performance composite material can be realized.

The invention relates to the technical field of coatings, in particular to an acrylate-epoxy resin composite coating and a preparation method thereof. According to the technical scheme, the coating is prepared from 25 to 35 parts of methyl methacrylate, 15 to 25 parts of butyl acrylate, 10 to 20 parts of epoxy resin E-5110, 8 to 15 parts of organic silicon modified acrylate prepolymer, 5 to 12 parts of fluorocarbon modified epoxy resin, 4 to 8 parts of core-shell structure corrosion inhibition nano container, 1 to 3 parts of functionalized graphene quantum dots and 4 to 10 parts of polyhedral oligomeric silsesquioxane maleimide modified amine curing agent. And 1-3 parts of a hindered amine light stabilizer. By integrating the core-shell structure corrosion inhibition nano container, the functionalized graphene quantum dots and the photo-thermal dual responsive curing agent component, the sensing, response and self-repairing of the coating on damage are realized, and long-acting corrosion resistance, weather resistance, bacteria resistance, mechanical property balance and intelligent maintenance are considered; and efficient and economical full-period protection is provided for equipment in an extreme environment.

The invention belongs to the field of epoxy resin composite materials, and particularly relates to a high-heat-resistance degradable epoxy resin composite material and a preparation method thereof.The high-heat-resistance degradable epoxy resin composite material is prepared by using ester-based structure epoxy resin as matrix resin, selecting benzoxazine as reinforced resin, using a phosphorus-containing polysilazane derivative as a modifier and using anhydride as a curing agent; the high-heat-resistance degradable epoxy resin composite material is prepared by taking epoxy resin as a raw material and an amine accelerant as an accelerant through mixing, pouring, curing and forming. The high-heat-resistance degradable epoxy resin composite material disclosed by the invention has excellent degradation capability in an alkaline solution at the temperature of 80-150 DEG C; the heat resistance is excellent, and the glass transition temperature can reach 185 DEG C; meanwhile, the high mechanical strength is achieved.

The invention discloses a method for preparing a carbon fiber / epoxy resin composite material by utilizing regulation and control of an intercalation interface of a graphene oxide nanosheet, and belongs to the technical field of carbon fiber / epoxy resin composite materials. The preparation method comprises the following steps: pretreating carbon fibers to prepare aminated carbon fibers; preparing a carbon fiber / graphene oxide nanosheet hybrid material; and preparing the graphene oxide nanosheet intercalation interface regulated carbon fiber / epoxy resin composite material. According to the method for preparing the carbon fiber / epoxy resin composite material by utilizing graphene oxide nanosheet intercalation interface regulation, the interface compatibility of the carbon fiber and the epoxy resin matrix is regulated by taking the graphene oxide nanosheet as an intercalation, the mechanical and thermodynamic properties of the composite material can be improved, the method is simple and easy to implement, and the method is suitable for industrial production. And the method is suitable for different types of carbon fiber / epoxy resin systems.

A preparation method of an emulsion type aramid fiber sizing agent belongs to the technical field of fiber surface treatment, and the specific scheme is as follows: preparing aromatic polyamide from corresponding diamine and acyl chloride, then reacting with epoxy resin to prepare modified epoxy resin, and preparing the emulsion type aramid fiber sizing agent under the action of a compound emulsifier. The preparation method disclosed by the invention is simple and relatively low in cost, better interface bonding can be formed between the aramid fiber and the epoxy resin after sizing by the sizing agent, and particularly, the interlayer shear strength of the aramid fiber / epoxy resin composite material is relatively well improved; the preparation method has important significance in improving the use performance and stability of the aramid fiber composite material and expanding the application of the aramid fiber.

The invention discloses a degradation reagent of an anhydride cured epoxy resin composite material, a degradation method and application of a degradation product, and relates to the field of solid waste material recovery. The degradation reagent comprises a catalyst and a solvent, and the solvent is a strong alkali aqueous solution; the structure of the catalyst is p-hydroxybiphenyl of which a benzene ring is connected with a hydrogen group or a cyano group; the degradation method comprises the following steps: heating the anhydride cured epoxy resin composite material and the degradation reagent to react, neutralizing, concentrating under reduced pressure, and drying the precipitate to obtain a degradation product. Phenolic hydroxyl groups of the catalyst are deprotonated under the alkaline condition to form phenoxy anions, the phenoxy anions react with anhydride groups in the anhydride cured epoxy resin composite material, the anhydride groups are broken, high-efficiency degradation is achieved, and the degradation method is easy and convenient to operate, environmentally friendly and suitable for industrial production. After the degradation product and the anhydride curing agent are cured and regenerated, the comprehensive performance is good, and the recycling value is improved.

The invention relates to the technical field of composite materials, in particular to a high-strength epoxy resin composite material and a preparation method thereof, and the high-strength epoxy resin composite material comprises the following raw materials in parts by weight: 50-80 parts of a base material, 10-20 parts of a curing agent, 5-10 parts of modified carbon nanotubes, 3-10 parts of a reinforcing sheet, 3-6 parts of a reinforcing material and 1-3 parts of a flame retardant. In the preparation method, the modified carbon nanotubes are in chemical bond connection with the base material through surface modification, the interface bonding force is enhanced, stress is effectively transmitted, the unique layered structure and surface modification treatment of the enhanced sheet are enhanced, the enhanced sheet is firmly combined with the resin matrix, and a three-dimensional enhanced network is formed through the synergistic effect of mechanical interlocking and stress dispersion. The vermiculite sheet layer prevents crack propagation, and the modified carbon nanotubes and the reinforcing material effectively transfer stress, so that the tensile strength and bending strength of the composite material are greatly improved, and the high-strength application requirement is met.

The invention provides a wave-absorbing material, and belongs to the technical field of electromagnetic wave absorption. The wave-absorbing material comprises a metal reflection bottom layer, a wave-absorbing middle layer and a scattering upper layer, the wave-absorbing middle layer is made of a ferroferric oxide loaded reduced graphene oxide and epoxy resin (Fe3O4 (at) RGO / EP) composite material and used for absorbing electromagnetic wave energy, and the scattering upper layer is of a patterned metasurface structure made of chopped carbon fiber reinforced epoxy resin (SCF / EP). And a phase-regulated two-dimensional periodic array is formed. By arranging a three-layer structure of the metal reflecting layer, the Fe3O4 (at) RGO / epoxy composite wave-absorbing layer and the chopped carbon fiber scattering layer, broadband absorption and directional scattering control of electromagnetic waves within the range of 2-18 GHz are achieved, a stealth function composite material system with dissipation and deflection dual-mechanism cooperative work is formed, the structure utilizes the patterning design of the scattering layer, and the structure has the advantages that the structure is simple, the structure is compact, and the application range is wide. On the basis of the generalized Snell's law, engineering regulation and control of the radar wave reflection direction are achieved by regulating and controlling the reflection phase difference between pattern units, reflection energy is effectively deviated from the main lobe direction of a radar receiver, and therefore the reflection signal intensity of a target in a radar detection system is reduced.

The invention relates to the technical field of data analysis state monitoring, in particular to a method for monitoring the curing state of a black phosphorene carbon nanotube epoxy resin composite material, which comprises the following steps: in the preparation process of the black phosphorene carbon nanotube epoxy resin composite material, collecting curing temperature data, processing and analyzing; obtaining a curing rate performance process coefficient according to the temperature data in the stirring, defoaming and curing processes; obtaining a composite material curing process trend coefficient according to the distribution condition of the curing rate performance process coefficient; obtaining a composite material curing process state offset coefficient according to the composite material curing process trend coefficient, and judging the curing state; and cooling and demolding: after curing is completed, cooling the material in the mold to room temperature, and demolding to obtain the black phosphorus alkene carbon nanotube epoxy resin composite material. Therefore, the preparation of the black phosphorus alkene carbon nanotube epoxy resin composite material is realized.

Imidazole latent flame retardant and its preparation method and modified epoxy resin, which relate to the field of new polymer material technology. The aforementioned imidazole latent flame retardant has a brand-new molecular structure, which does not contain halogen elements. It is a green halogen-free environmentally friendly flame retardant. It will not pollute the environment during thermal decomposition or combustion, which is beneficial to environmental protection and sustainable development. After the flame retardant performance test, mechanical property test and thermal stability test were carried out on the epoxy resin composite material added with the above flame retardant, it was proved that the composite material added with the above flame retardant not only has good flame retardant performance, but also has significantly improved mechanical properties and maintains good thermal stability. Compared with existing flame retardants, the above flame retardant can also ensure good flame retardant effect at a lower dosage.

The invention relates to the technical field of rubber materials, in particular to a high-strength and low-dielectric-loss epoxy resin composite material and a preparation method thereof. The epoxy resin composite material is prepared from the following raw materials in parts by weight: 100 parts of modified epoxy resin, 12 to 18 parts of cyanate ester resin, 40 to 50 parts of aramid fiber, 10 to 15 parts of filler, 15 to 25 parts of flexibilizer, 1 to 6 parts of first curing agent and 1 to 2 parts of accelerant. The epoxy resin composite material with high strength and low dielectric loss has the advantages of high strength, good impact resistance, high breakdown strength, low dielectric constant and low dielectric loss. The requirements of high-voltage power transmission equipment insulation parts, high-frequency circuit substrates, spacecraft lightweight structural members and the like on the fields with strict requirements on mechanical strength and dielectric properties can be met; and the preparation method is simple and controllable, the production cost is relatively low, and large-scale production can be realized.

The invention relates to the technical field of anticorrosive coatings, in particular to a waterborne epoxy resin composite anticorrosive coating with MXene-NiO-PPy as filler and a preparation method of the waterborne epoxy resin composite anticorrosive coating. The invention discloses a water-borne epoxy resin composite anticorrosive coating taking MXene-NiO-PPy as a filler. The water-borne epoxy resin composite anticorrosive coating is prepared from a water-borne epoxy resin emulsion, a modified amine adduct curing agent, MXene-NiO-PPy, a microencapsulated corrosion inhibitor, a dispersing and leveling aid, nano cellulose, nano silicon dioxide aerogel powder and deionized water. The waterborne epoxy resin composite anticorrosive coating with MXene-NiO-PPy as a filler is prepared by pre-dispersing slurry, microencapsulating and stirring at a low speed, has physical shielding property, active chemical passivation property, excellent mechanical toughness and good construction performance, and effectively solves the problems that the traditional waterborne epoxy coating is insufficient in shielding property, easy to crack and only passive in protection.

The invention relates to an epoxy resin composite material and application thereof, and relates to the technical field of epoxy resin materials.The preparation method of the epoxy resin composite material comprises the following steps that epoxy resin, a curing agent and an accelerant are stirred and mixed, and a first mixture is obtained; stirring and mixing the first mixture and a composite reinforcing material to obtain a second mixture; and carrying out vacuum defoaming and curing on the second mixture to obtain the epoxy resin composite material, wherein the composite reinforcing material is obtained by treating sulfydryl modified fibers and imidazolium ionic liquid through a silane coupling agent. The composite reinforcing material obtained by treating the sulfydryl modified fiber and the imidazolium ionic liquid through the silane coupling agent is constructed and introduced into an epoxy resin matrix, so that the heat-conducting property and the mechanical property of the obtained epoxy resin composite material are remarkably improved, and the defects in the prior art are overcome.

The invention relates to a low-dielectric-loss high-thermal-conductivity epoxy resin composite material and a preparation method thereof, and the preparation method comprises the following steps: carrying out surface modification treatment on a thermal conductive filler: carrying out surface modification on the thermal conductive filler by adopting a chemical covalent bonding or physical adsorption mode, the heat-conducting filler is used for improving the compatibility of the filler and an epoxy resin matrix and reducing the interface thermal resistance, and comprises boron nitride with a two-dimensional sheet structure; epoxy resin, a curing agent and an optional modifier are evenly mixed, the epoxy resin is selected from epoxy resin with the low polarity characteristic, and the modifier comprises at least one of thermoplastic resin or elastomer. And the process is simple and controllable.

The invention belongs to the technical field of solar cells, and particularly relates to composite glass cloth for a solar cell and application of the composite glass cloth. The glass cloth comprises glass cloth and reinforced epoxy resin attached to the glass cloth, the reinforced epoxy resin comprises epoxy resin powder, liquid epoxy resin, a curing agent and an initiator, and the curing temperature of the reinforced epoxy resin is 130-150 DEG C. According to the technical scheme provided by the invention, the epoxy resin composite glass cloth is additionally arranged on the two sides of the battery piece, so that the problem that a light solar battery assembly is insufficient in strength and cannot pass a hail-resistant experiment is solved; the initiator and the curing agent with corresponding components are matched, so that the surface of the composite glass cloth is not sticky to hands, production, transportation and on-site packaging are facilitated, cross-linking curing can be further performed at a relatively high temperature when a battery piece is finally laminated, and enough bonding strength with an adjacent layer is generated.

The invention relates to a marine epoxy resin composite material. The marine epoxy resin composite material is characterized by comprising the following components in parts by mass: 100 parts of epoxy resin, 20-30 parts of a curing agent, 100-120 parts of a reinforcing material, 2050 parts of hollow microsphere filler and 5-15 parts of a flame retardant, the epoxy resin is one or a mixture of two of bisphenol A type epoxy resin, bisphenol F type epoxy resin, polyphenol type glycidyl ether epoxy resin or aliphatic glycidyl ether epoxy resin. When in use, the marine epoxy resin composite material disclosed by the invention has the advantages of excellent comprehensive performance, corrosion resistance, flame retardance, water resistance, high strength, light weight and the like, still has excellent performance retention rate after being soaked in water for several days, and is more suitable for complex and severe working conditions on a ship.

The invention belongs to the technical field of polymer insulating materials, and particularly relates to an epoxy resin composite insulating material and a preparation method thereof. The composite material comprises the following components in parts by weight: 60-70 parts of epoxy resin, 5-8 parts of acetone, 12-15 parts of modified glass fibers, 1-2 parts of nano SiO2, 5-8 parts of polyurethane microspheres, 10-12 parts of micron Al2O3, 2-3 parts of epoxy monomer microcapsules, 8-10 parts of a curing agent and 3-5 parts of a modifier. The material cost is effectively reduced on the premise of ensuring the insulating strength, the thermal conductivity and the mechanical property, and the influence of the high-viscosity nano filler on the processing fluidity is reduced by compounding the micron Al2O3 and the nano SiO2; nano SiO2 is directionally deposited on the surface of the fiber through electrostatic spraying, a local high-concentration nanophase is formed in an interface area, the high-proportion nano SiO2 adding requirement of a traditional matrix is replaced, the total nano material dosage is effectively reduced, and the cost is remarkably reduced.