30results about How to "High functionality" patented technology

The invention belongs to the technical field of polyurethane pouring sealants, and particularly relates to a hydrolysis-resistant heat-conducting polyurethane pouring sealant and a preparation method thereof. The hydrolysis-resistant heat-conducting polyurethane pouring sealant is prepared from a component A and a component B according to the mass ratio of 100: (18.5-20.5), and the component A comprises the following raw materials: amine ether polyol, modified castor oil, a flame retardant, a heat-conducting filler, a silane coupling agent and a catalyst; the component B is prepared from the following raw materials: polymerized MDI (Diphenyl Diisocyanate), MDI-50 and carbodiimide modified MDI; the amine ether polyol is prepared by carrying out a reaction on 3, 3 '-dimethyl-4, 4'-diaminodiphenylmethane and epoxypropane. The hydrolysis-resistant heat-conducting polyurethane pouring sealant disclosed by the invention not only has good technological operation performance and heat-conducting performance, but also has excellent hydrolysis resistance, and still has good mechanical property and electrical insulation property after being aged; the invention also provides a scientific, reasonable, simple and feasible preparation method.

The invention relates to the technical field of hot melt adhesive preparation, and discloses a modified rosin castor oil-based polyurethane degradable hot melt adhesive and a preparation method thereof. The modified rosin castor oil based polyurethane degradable hot melt adhesive is prepared from the following raw materials in parts by weight: 200 to 250 parts of castor oil modified polyurethane, 80 to 120 parts of modified rosin resin, 15 to 30 parts of functional modified nanoparticles, 10 to 15 parts of ammonium polyphosphate, 5 to 10 parts of aluminum hydroxide, 0.5 to 5 parts of plasticizer and 0.1 to 0.5 part of antioxidant. The rosin resin is modified by acrylic acid and then compounded with castor oil-based polyurethane resin, so that the adhesion, heat resistance, glossiness and hardness of the material are improved, the material has good antibacterial property by adding functional modified particles, and meanwhile, the flame retardant property of the material is further improved.

The invention discloses a silane modified polyether sealant and a preparation method thereof, and belongs to the technical field of sealants, and through preferable matching of all the components, the prepared product not only has environmental friendliness, but also has good cohesiveness, coating property, weather resistance and durability; the preparation method disclosed by the invention has the characteristics of simple process and safety, and the prepared product can be used for bonding and sealing in the fields of buildings, home decoration, transportation, equipment manufacturing and the like.

The invention discloses a preparation method of a polyurethane type UV (ultraviolet) visbreaking protective film, which comprises the following steps: (1) mixing hydroxyl-terminated polybutadiene, ethyl acetate, 2-chloro-4, 6-diphenyl-1, 3, 5-triazine, ethidene diamine, dibutyltin dilaurate and hydroquinone in a reaction kettle in a nitrogen protection atmosphere, heating, adding isophorone diisocyanate, stirring at a constant temperature, adding a catalyst, stirring at a constant temperature, and reacting for 2-4 hours; adding 1, 4-butanediol to obtain an adhesive; (2) uniformly mixing hydroxyethyl acrylate, methyl tetrahydrophthalic anhydride and maleic anhydride, heating, adding triethylamine, stirring at a constant temperature, and adding epoxidized soybean oil to obtain a modified acrylate monomer; and (3) stirring the adhesive, then adding the modified acrylate monomer, 1-ethyl-3-methylimidazolium tetrafluoroborate, sodium octane sulfonate and the photoinitiator into the adhesive in a stirring state, stirring to obtain a UV viscosity-reducing adhesive, and coating to obtain the UV viscosity-reducing protective film. The UV viscosity-reducing glue prepared by the method provided by the invention has a good viscosity-reducing effect, is easy to peel after viscosity reduction, and is convenient to operate.

The invention relates to a mineral wool sandwich board PIR edge sealing production system and production process. The mineral wool sandwich board PIR edge sealing production system comprises a white material storage tank, a pentane storage tank, an on-line cutting precision mixer, a transition tank, a black material storage tank and a mixing head. Due to the fact that the using amount of edge sealing materials is small, the mixing effect of polyester and pentane is affected, and edge sealing sandwich boards with high fire resistance cannot be manufactured, the system cuts, extrudes, impacts and disperses white materials and pentane in the mixer by increasing flow feeding, and the mixing effect is improved. Due to the fact that the premixing white material amount consumed by the mixing head is small, discharging of the mixing head cannot be interrupted, and the output of the premixing white material is different from the premixing white material amount consumed by the mixing head, in order to achieve flow balance of the premixing white material and the premixing white material amount consumed by the mixing head, flow balance is achieved by increasing the premixing white material flow + intermittent feeding = small flow of the mixing head + continuous discharging. The middle transfer transition device caches the premixed white material to solve the problem of uninterrupted discharging of the mixing head so as to achieve continuous production, and the major problem that online mixing foaming cannot be achieved due to small flow of polyester and pentane is successfully solved.

The present invention belongs to the technical field of polyether polyol synthesis, and specifically relates to a polyether polyol for low hysteresis loss polyurethane foam tire and a continuous preparation method thereof. The polyether polyol uses a 6-functionality small molecule alcohol as an initiator, a phosphazene catalyst or a phosphazene and an alkali metal catalyst mixed catalyst for catalytic reaction, and adopts a continuous preparation method, with a short production cycle and high yield. The prepared polyether polyol has the characteristics of high functionality, high molecular weight, low unsaturation, narrow molecular weight distribution, etc., and can be used in the preparation of polyurethane foam tires to reduce the compression permanent deformation of the material, reduce endogenous heat, and improve resilience, thereby solving the industry bottleneck problem that the foam tire cannot rebound or rebounds slowly after being loaded.

The present invention belongs to the technical field of polyether polyols, and specifically relates to a polyether polyol with high pentane miscibility and a preparation method thereof. The polyether polyol is composed of the following raw materials in parts by mass: 9 to 23 parts of small molecule polyols; 0.5 to 2.5 parts of amine catalysts; 12 to 43 parts of polyhydroxy stearates; and 47 to 66 parts of alkylene oxides. Polyhydroxy stearates are used as composite initiators, and through molecular structure design, polyhydroxy-rich fatty long chains are introduced into the molecular skeleton of polyether polyols, which significantly enhances the miscibility of polyether polyols with pentane. In addition, the polyhydroxy stearates also contain a large number of hydroxyl groups, which can directly participate in the polymerization reaction and firmly bond to the main chain of the polyether polyol, which not only optimizes the storage stability of the product, but also significantly improves its functionality and hydroxyl value, and verifies the high strength characteristics of the product in practical applications.

The application discloses an end hexaazido nitrate polyether adhesive and a synthesis method thereof. The method first takes triazido neopentyl alcohol and glycidyl ether nitrate as raw materials, boron trifluoride-ether complex as a catalyst, and obtains triazido neopentyl polyglycidyl ether nitrate alcohol through cation ring-opening polymerization reaction; then takes triazido neopentyl polyglycidyl ether nitrate alcohol and hexamethylene diisocyanate as raw materials, dibutyl tin dilaurylate as a catalyst, and obtains end hexaazido polyglycidyl ether nitrate through addition reaction, namely the end hexaazido nitrate polyether adhesive. The application is mainly used for solid propellants, is used for synthesizing polytriazole elastomers, improves the content and crosslinking density of hard segments, promotes microphase separation of the elastomers, and thus improves mechanical properties.

The invention discloses a biphenyl type polythiol compound and a preparation method and application thereof, the biphenyl type polythiol compound has a structural general formula as follows: # imgabs0 #, R1 and R2 are adjacent substituent groups on a benzene ring, R1 is mercaptopropyl, R2 is mercaptoalkoxy of C2-C18, f1m and f2n are other substituent groups on the benzene ring, and f1m and f2n are different substituent groups on the benzene ring. F1 and f2 are respectively and independently selected from any group except an organic metal group and a nucleophilic group, and m and n are respectively selected from any integer of 0-3. The sulfydryl alkyl and sulfydryl alkoxy ortho-substituted biphenyl type polythiol compound is prepared from the low-cost raw material biphenol, and the preparation method is simple, efficient, high in controllability, low in cost and suitable for batch preparation. When the ortho-substituted biphenyl polythiol compound is used as a curing agent, not only can low-temperature curing of a resin composition be realized, but also the bonding strength, heat and humidity resistance, mechanical property and waterproof property of cured resin can be remarkably improved.

The invention provides an epoxy curing agent as well as a preparation method and application thereof. The preparation method of the epoxy curing agent comprises the following steps: carrying out first reaction on a first mixed reaction system containing amino siloxane and a chain extender to obtain an intermediate product of which the main chain contains a-Si-O-Si-bond and the side chain contains amino; performing a second reaction on a second mixed reaction system containing the intermediate product and a cross-linking agent to obtain the epoxy curing agent, wherein the cross-linking agent comprises an acid cross-linking agent. A coating film formed by the epoxy resin coating containing the epoxy curing agent has excellent high temperature resistance and good flexibility.

The present invention belongs to the technical field of UV curing materials, and specifically relates to a bio-based flame retardant ultraviolet light curing prepolymer and its preparation method and application. The present invention uses vegetable oil acid as a bio-based raw material and hydroxy acrylate to prepare vegetable oil-based acrylate through esterification reaction, uses triethyl phosphonoacetate, alcohol amine compounds, and methacrylic anhydride to react to prepare a phosphorus-containing monomer, and then uses anhydride, silane and hydroxy acrylate to react to prepare a silicon-containing monomer, and then the vegetable oil-based acrylate, phosphorus-containing monomer, and silicon-containing monomer are uniformly mixed in a certain proportion to prepare a bio-based flame retardant ultraviolet light curing prepolymer. The present invention uses bio-based raw materials to reduce the use of petrochemical resources; at the same time, the present invention prepares phosphorus-containing monomers and silicon-containing monomers containing flame retardant elements, so that the prepared cured film has excellent flame retardant properties and has a wide range of applications in the field of UV curing materials.

The invention relates to a delayed curing pressure-sensitive adhesive, a pressure-sensitive adhesive tape and a preparation method thereof, and belongs to the technical field of pressure-sensitive adhesives. The delayed curing pressure-sensitive adhesive is prepared by adopting sulfydryl modified hyperbranched epoxy resin with a hyperbranched structure, an acrylate polymer containing an epoxy group and a modified photobase generator coated with the sulfydryl modified acrylate polymer containing a photosensitizer as raw materials, and the prepared delayed curing pressure-sensitive adhesive is long in storage time; meanwhile, deep curing can occur, and the delayed curing pressure-sensitive adhesive is good in mechanical property and high in bonding strength after being subjected to ultraviolet irradiation treatment.

The present invention relates to the technical field of epoxy resin curing agents, and provides a trifunctional modified imidazole curing agent, a preparation method thereof, and an application thereof. The present invention introduces a benzene ring group having good compatibility with epoxy resin into the structure of the modified imidazole curing agent, and at the same time increases the functionality of the curing agent, thereby improving the curing degree of the epoxy resin and improving the mechanical properties of the cured product. The trifunctional modified imidazole curing agent provided by the present invention has a low curing temperature and a high hardness of the cured product, and has very important application significance in the field of low-temperature curing of epoxy powder coatings. The present invention also provides a preparation method of the trifunctional modified imidazole curing agent described in the above scheme, which adopts the glycidyl ether of the triphenol methane structure and the common imidazole curing agent as the main raw materials to prepare the trifunctional modified imidazole curing agent, which has low cost, simple process, and is suitable for industrial production.

The invention belongs to the technical field of synthesis of functional perfluoropolyether carboxylic acid, and particularly discloses a method for preparing perfluoropolyether carboxylic acid by using perfluoropolyether oil, which comprises the following steps: by using relatively cheap inert perfluoropolyether oil as a raw material, carrying out catalytic cracking by using a magnesium-based catalyst to obtain an expensive active perfluoropolyether single-ended carboxylic acid product. The magnesium-based catalyst has high selectivity on the active perfluoropolyether single-ended carboxylic acid product, the whole synthesis process is simple in process, mild in reaction condition and easy to operate, and the target product active perfluoropolyether single-ended carboxylic acid is high in proportion, large in functionality, wide in application range and extremely high in added value of the product and has high market economic benefits.

The utility model discloses a docking station matched wiring harness storage box, which relates to the technical field of docking station products, and adopts the technical scheme that the docking station matched wiring harness storage box comprises a storage box body, two second magnets are embedded in one side of a docking station, the storage box body is arranged on one side of the docking station, two third magnets are embedded in one side of the storage box body, and plastic pads are arranged on one sides of the two third magnets. The two plastic pads are bonded and fixed with the storage box body, two chucks are fixedly connected in the storage box body through screws, two first magnets are embedded in the other side of the docking station, the docking station and the storage box body are attracted through a second magnet and a third magnet, a data line is arranged in the storage box body, and the data line is buckled with the two chucks. The docking station has the advantages that the situation that a user forgets to carry a wire harness when using a product, and consequently the product function cannot be used is avoided, due to the existence of the containing box, the originally-exposed socket of the docking station is hidden when the docking station is not used, the dustproof and waterproof effects are achieved, and the functionality of the docking station is improved.

The invention provides a thermal insulation material for a broken bridge aluminum alloy profile and a preparation method thereof, and the thermal insulation material for the broken bridge aluminum alloy profile comprises a first glass fiber reinforced nylon 66 profile and a second glass fiber reinforced nylon 66 profile which are arranged in parallel on two sides at an interval, the thermal insulation material is filled between the first glass fiber reinforced nylon 66 profile and the second glass fiber reinforced nylon 66 profile, and the outer surface of the front side of the thermal insulation material is connected with a cover plate; the heat insulation material is prepared from the following raw materials in parts by mass: 30 to 50 parts of polyether polyol 4110, 20 to 40 parts of polyether polyol 380, 10 to 20 parts of polyether polyol 403, 30 to 70 parts of isocyanate, 1 to 3 parts of chain extender, 0.5 to 1.5 parts of foaming agent, 0.5 to 1.5 parts of cross-linking agent, 1 to 3 parts of catalyst, 0.5 to 1.5 parts of stabilizer and 1 to 3 parts of flame retardant. According to the thermal insulation material for the broken bridge aluminum alloy profile, the polyurethane foaming material and the cover plate have higher adhesiveness, and meanwhile, the polyurethane foaming material has better mechanical property, proper processability and higher reaction rate.

The invention discloses a silane-modified polyether sealant and a preparation method thereof. The invention belongs to the technical field of sealants. The invention prepares a product which is not only environmentally friendly but also has good adhesion and coating properties, and is weather-resistant and durable through the preferred combination of various components. The preparation method of the invention has the characteristics of simple process and safety, and the prepared product can be used for bonding and sealing in the fields of construction, home decoration, transportation, equipment manufacturing, etc.

The invention discloses a high-functionality composite macromonomer and its preparation method and application, and relates to the technical field of polymer polyols. Its technical scheme is: S1 reacts an initiator with an epoxy compound under the action of a catalyst to obtain a polyether polyol intermediate; S2 uses the polyether polyol intermediate and a hyperbranched polyester polyol as a composite initiator, reacts with an epoxy compound under the action of a catalyst, and generates a polyether / polyester ether polyol; S3 reacts a polyether / polyester ether polyol with an unsaturated isocyanate under the action of a catalyst to generate a high-functionality composite macromonomer. The present invention improves the functionality of the macromonomer by an initiator, improves the dispersibility of the macromonomer in the polymer polyol, improves the stability of styrene-acrylonitrile copolymer particles in the polymer polyol, and reduces the viscosity of the polymer polyol; a polyester system is introduced into the macromonomer structure, the hydrophobic group ratio in the polymer polyol is increased, and the occurrence of the hydrogel phenomenon is reduced.

The invention discloses a multifunctional triazine type chrome-free tanning agent and a preparation method thereof. The chrome-free tanning agent is prepared by using aminobenzenesulfonic acid, aminonaphthalenesulfonic acid, aminonaphtholsulfonic acid, diaminobenzenesulfonic acid, sultone and trihalo-s-triazine as raw materials. The triazine type chrome-free tanning agent has high functionality, contains functional groups such as active chlorine, sulfonic acid group, hydroxyl group and aromatic ring, forms multi-point cross-linking between collagen fibers, produces tanning effect, and significantly improves the shrinkage temperature and physical and mechanical properties of leather collagen. The triazine type chrome-free tanning agent can replace chrome powder, reduce environmental pollution in the leather industry, and promote clean production in the leather industry. The invention provides a new idea for the development and research of a novel chrome-free tanning agent.

The invention belongs to the technical field of polyether polyol and preparation thereof, and particularly relates to nicotinic acid modified pyridoxamine polyether polyol and a preparation method thereof. The preparation method of the nicotinic acid modified pyridoxamine polyether polyol comprises the following steps: carrying out reaction on pyridoxamine and a phosphoric acid aqueous solution to convert pyridoxamine phosphate, carrying out esterification reaction on nicotinic acid and pyridoxamine phosphate under the action of a catalyst sulfuric acid, and dehydrating to obtain nicotinic acid pyridoxamine ester; then, by taking pyridoxamine nicotinate and liquid small-molecular alcohol as initiators, under the action of a basic catalyst, carrying out polymerization reaction on pyridoxamine nicotinate and liquid small-molecular alcohol and alkylene oxide, and carrying out post-treatment, so as to obtain the nicotinic acid modified pyridoxamine phosphate polyether polyol. According to the preparation method of the nicotinic acid modified pyridoxamine polyether polyol, the raw materials are simple and environment-friendly, and melamine does not need to be introduced; the nicotinic acid modified pyridoxamine polyether polyol prepared by adopting the preparation method disclosed by the invention is excellent in flame retardant property, high in compression strength and good in pentane solubility.

The invention discloses an anti-fouling auxiliary agent and an application thereof in an ultraviolet curing coating. The anti-fouling auxiliary agent is specifically fluorine-containing light-cured hyperbranched polyester containing acrylic ester. Under the irradiation of ultraviolet light, double bonds of acrylate in the assistant structure can be crosslinked and cured with double bonds of acrylate resin and acrylate monomers in the coating to form a coating with excellent hydrophobic and oleophobic properties, so that the coating has an excellent anti-fouling effect.

The invention discloses a flexible easy-to-form 3D printing photosensitive resin and a preparation method thereof, and the flexible easy-to-form 3D printing photosensitive resin comprises the following components in parts by weight: 20-60 parts of a polyurethane acrylate oligomer, 0-50 parts of an acrylate oligomer, 10-80 parts of mono-functional and polyfunctional acrylate, 0.05-10 parts of a photoinitiator and 0.05-5 parts of an auxiliary agent. The invention has the following beneficial effects: when the acrylate oligomer is subjected to a photocuring reaction, the material has relatively high functionality and rigidity, after curing and molding, the material has relatively rigid performance, a high printing success rate is ensured, and through high temperature (120 DEG C) treatment, Diels-Alder reverse reaction occurs, part of chemical bonds are broken, the material hardness is reduced, and thus, the material has a very good application prospect. The toughness is improved.

The invention belongs to the technical field of organic synthesis, and particularly relates to an addition product of alkyl free radicals and a capture reagent as well as an addition method and application of the addition product. Dissolving secondary alkyl ethylbenzene A, a capture reagent B, an acridinium salt photocatalyst and an additive into an organic solvent, and carrying out an illumination reaction to obtain an addition product of the alkyl free radical and the capture reagent; wherein the structural general formula of the secondary alkyl ethylbenzene A is # imgabs0 # formula I; the capture reagent B is selected from at least one of # imgabs1 # imgabs2 # TsCN; the structural formula of the addition product of the alkyl free radical and the capture reagent comprises at least one of # imgabs3 #. The invention provides a method for oxidizing secondary alkyl ethylbenzene through single electron transfer to induce the secondary alkyl ethylbenzene to generate carbon-carbon bond breakage and react with a capture reagent to generate a product. Reactants and raw materials are easy to obtain, the reaction process is safe and controllable, the operation is simple, and the production cost is low. And the addition product has high functional group property and is more diversified in application.

The utility model discloses multifunctional chemical reagent metering equipment which comprises a transparent metering cup and further comprises a weighing mechanism located at the bottom of the transparent metering cup. The accurate measuring mechanism is located in the center of the bottom of the transparent measuring cup; according to the scheme, by arranging the accurate measuring mechanism, a chemical reagent can be fully stirred conveniently, so that the liquid level height of the reagent can be accurately indicated and marked while the medicine is fully dissolved, and therefore the situation that a measuring result deviates due to insufficient dissolution of a medicine bottle and deviation of a visual angle is avoided; therefore, the purposes that a worker can conveniently and accurately check the height of the liquid level of the chemical reagent according to the indicated and marked positions and then accurately measure the volume of the chemical reagent are achieved, the weighing mechanism is arranged, the chemical reagent can be conveniently and accurately weighed, other equipment does not need to be adopted for weighing, and the working efficiency is improved. Therefore, the purpose of further improving the functionality of the equipment is achieved.

The invention discloses a terminal tetraene polyether adhesive and a synthesis method thereof. The method uses 2,7-octadienol and propylene oxide as raw materials, boron trifluoride ether complex as a catalyst, and obtains octadienyl polypropylene oxide alcohol through cationic ring-opening polymerization; then uses octadienyl polypropylene oxide alcohol and hexamethylene diisocyanate as raw materials, dibutyltin dilaurate as a catalyst, and obtains terminal tetraene polypropylene oxide through addition reaction, that is, terminal tetraene polyether adhesive. The present invention can improve the mechanical properties of an elastomer, and the polyisoxazoline elastomer prepared using the terminal tetraene polyether adhesive of the present invention as a raw material has a tensile strength of 1.6MPa at 20°C and an elongation at break of 126%.

The invention belongs to the technical field of composite coiled materials, and particularly relates to a high-wear-resistance and mildew-proof wood-bamboo composite coiled material and a preparation method thereof. The high-wear-resistance and mildew-proof wood-bamboo composite coiled material sequentially comprises a hydrophobic modified bamboo powder layer, a mildew-proof puffed cork powder layer and a hydrophobic modified bamboo powder layer from top to bottom. According to the invention, hyperbranched polyurea with a three-dimensional spherical structure is synthesized, a large number of cavities exist in molecules, and numerous amino groups and ureido groups with high reaction activity are distributed on the periphery of the hyperbranched polyurea, and the hyperbranched polyurea is subjected to bio-based modification through vanillin; the prepared vanillin modified hyperbranched polyurea adhesive is introduced into a wood-bamboo composite coiled material with high wear resistance and mildew resistance, and hydrophobic bamboo powder and mildew-resistant cork powder can be firmly combined into a high-strength and durable integral coiled material by virtue of high bonding strength brought by a hyperbranched structure of the vanillin modified hyperbranched polyurea adhesive and an enhancement function introduced by the vanillin, so that the strength of the coiled material is greatly improved.

The invention discloses a high-load polyurethane microporous elastomer and its preparation method and application, belonging to the technical field of polyurethane resin. Its technical scheme is: composed of component A and component B, wherein: component A is composed of high-functionality high-activity polyether polyol, polyether polymer polyol, chain extender, foam leveling agent, catalyst, foaming agent, component B is polyester polyol-modified isocyanate, component A and component B are mixed in a ratio of 100: (90-110) to prepare a low-speed and durable solid tire. The high-load polyurethane microporous elastomer provided by the present invention has a higher load characteristic, is suitable for high-load low-speed engineering vehicle solid tires, and has a significant advantage of durability.

The invention belongs to the technical field of polycarbonate polyether polyol, and provides a production process of citric acid type polycarbonate polyether polyol, the production process is carried out in a tubular reaction device, and the tubular reaction device comprises a premixing unit, a reaction unit and a post-treatment unit, the premixing unit adopts a partitioned premixing form to prevent citric acid from passivating the activation center of the catalyst; a gas-liquid mass transfer area with a specific proportion is arranged in a tubular reactor of a reaction unit, a gas-liquid double-circulation mode is adopted, a double-flow atomization nozzle with a specific structure is designed, a static mixer is arranged in the reaction area, and the material circulation flow rate and the range temperature are accurately controlled; compared with the prior art, the preparation method has the advantages that the conversion rate of the epoxypropane and the functionality of the citric acid type polycarbonate polyether polyol are effectively improved, the content of byproducts is reduced, the mechanical property of the citric acid type polycarbonate polyether polyol in polyurethane foaming application is improved, and the production efficiency and the product quality can be remarkably improved in industrial production.

The present application provides a method for generating and capturing alkyl free radicals, and its products and applications of the products, the method comprising the following steps: subjecting primary alkyl ethylbenzene and a capturing agent to a light catalytic reaction under photocatalytic conditions; the structure of primary alkyl ethylbenzene is as follows: the capturing agent contains an unsaturated bond or an electron-withdrawing group. The method for generating and capturing alkyl free radicals provided in the present application uses primary alkyl ethylbenzene as a reaction substrate, oxidizes alkyl ethylbenzene by single electron transfer, and then induces carbon-carbon bond breakage under photocatalytic conditions to generate alkyl free radicals, and then the alkyl free radicals react with the capturing agent for synthesis, which significantly reduces the production cost of preparing such captured products and greatly expands the designability and application prospects of such compounds.

The application discloses a low-loss resin composition containing active ester, a prepreg and a copper-clad plate, and the resin composition contains the following main components in parts by weight: 30-70 parts of an epoxy resin, 30-70 parts of an epoxy curing agent, 0-3 parts of a curing accelerator, and 20-100 parts of a filler; wherein the epoxy curing agent is a tetraphenol fluorenyl active ester; the prepreg is prepared by immersing glass cloth in glue liquid formed by the low-loss resin composition, and then baking the glass cloth in an oven at 80-200 DEG C for 1-20 min; and the copper-clad plate is prepared from the prepreg, and the fluorine-containing tetrafunctional active ester is synthesized by esterification reaction of tetraphenol fluorene and pentafluorobenzoyl chloride, and the rigid fluorene ring structure is introduced, which is helpful to improve the thermal performance of the cured epoxy composite material; and the application effectively solves the problem of insufficient heat resistance of the resin composition used for preparing the copper-clad plate, and the amount of the filler is increased to meet the requirement of low polarity, the interface compatibility of the resin and the filler is poor, and the dielectric loss is further improved.