31results about How to "Reduce crosslink density" patented technology

The invention relates to the technical field of polyester resin, and discloses outdoor hydrolysis-resistant polyester resin and a preparation method and application thereof.The outdoor hydrolysis-resistant polyester resin is prepared from, by weight, 30-38 parts of polyhydric alcohol, 48-50 parts of binary acid, 20.5-28.5 parts of acidolysis agent and 0.1-0.12 part of onium salt curing accelerator; according to the invention, 2-butyl-2-ethyl-1, 3-propylene glycol is used as polyol, and an alkyl side chain is introduced into polyester molecules to generate steric hindrance and shielding effects, so that water molecules are difficult to attack adjacent lipid bonds, and the hydrolysis resistance of the polyester resin is improved. 2, 2 '-[(2-hydroxy-3-phenoxy propyl) azadiyl] diethanol contains a benzene ring structure with thermal stability, and is crosslinked into a polyester molecular chain, so that the glass transition temperature of the polyester resin can be increased, the heat resistance can be improved, and the boiling water resistance of a resin coating can be improved.

The invention relates to the technical field of nano composite materials, and particularly discloses a super wear-resistant self-lubricating carbon nano polymer and a preparation process thereof. The invention discloses a super wear-resistant self-lubricating carbon nano polymer which is prepared from the following raw materials in parts by weight: 35-50 parts of phenolic resin, 5-10 parts of bisphenol F resin, 0.2-1 part of a defoaming agent, 5-10 parts of modified phenolic resin fiber, 1-1.5 parts of pretreated graphene, 5-10 parts of polytetrafluoroethylene, 12-18 parts of nano aluminum oxide, 6-10 parts of talcum powder, 0.5-3 parts of zirconium oxide, 0.2-1 part of a flatting agent and 1-5 parts of silicon carbide. 0.2-1 part of an antioxidant, 0.2-1 part of an ultraviolet absorbent and 25-35 parts of cardanol. The super-wear-resistant self-lubricating carbon nano polymer prepared by the invention has the advantages of good toughness and good wear resistance.

The invention belongs to the technical field of resin modification research, and particularly relates to a preparation method of toughened bismaleimide resin. The preparation method comprises the following steps: pre-polymerizing a diamine toughening agent and bismaleimide resin to form a prepolymer A, blending the bismaleimide resin by virtue of the prepolymer A and diallyl bisphenol a with different contents, and curing the blended resin by adopting a specific process after blending, so as to obtain the toughened bismaleimide resin cured product. The toughened bismaleimide resin cured product prepared by the invention has excellent toughness and heat resistance.

The invention belongs to the technical field of polyester resin, and particularly relates to polyester resin with high impact resistance and super weather resistance and a preparation process of the polyester resin. The polyester resin is prepared from the following components in parts by weight: 30 to 40 parts of polyol, 40 to 55 parts of binary acid and / or anhydride, 15 to 25 parts of amino resin, 8 to 12 parts of acrylic polyol resin, 5 to 20 parts of acidolysis agent, 1 to 5 parts of polyamide, 0.1 to 0.5 part of esterification catalyst, 10 to 20 parts of modified filler, 2 to 4 parts of curing accelerator and 0.1 to 1.5 parts of antioxidant. According to the invention, polyamide is added to modify the resin, and is compounded with amino resin and acrylic polyol resin, so that the polyester resin of the high-impact super-weather-resistant powder coating is designed and prepared, impact resistance and a leveling effect can be considered, and the coating prepared from the polyester resin has good wear resistance and outstanding super weather resistance at the same time.

The invention discloses a polymer modified epoxy resin flexibilizer as well as a preparation method and application thereof, and belongs to the technical field of flexibilizers. The toughening agent is prepared from the following components in parts by weight: 80-150 parts of a modified polyurethane aqueous solution, 10-25 parts of a polystyrene / polyamide mixture, 50-80 parts of amino-terminated liquid nitrile rubber, 15-25 parts of an emulsifier, 5-10 parts of a nano silicon dioxide / nano zirconium dioxide mixture, 10-20 parts of phenolphthalein polyaryletherketone, 20-30 parts of a formic acid / acetic acid mixed solution and 20-40 parts of water. According to the toughening agent, the impact toughness and tensile strength of a toughened epoxy resin system are improved, the crosslinking density and brittleness of epoxy resin are reduced, the impact resistance of the resin can be improved, and the epoxy resin system with high strength, high toughness and high heat resistance is obtained.

The invention relates to the technical field of high polymer materials, in particular to unshielded spraying finish paint for railway vehicles and a preparation process of the unshielded spraying finish paint. The invention relates to a shielding-free spraying finish paint for a railway vehicle. The shielding-free spraying finish paint is prepared from 35 to 50 parts of silicon modified waterborne polyurethane resin, 12 to 18 parts of modified polyether resin, 7 to 11 parts of anticorrosive filler, 0.8 to 1.3 parts of accelerant, 0.2 to 0.7 part of defoaming agent, 1.2 to 1.5 parts of solvent and 0.1 to 0.3 part of flatting agent. According to the non-shielding spraying finish paint for the railway vehicle, the defects that the adhesive force between coatings is poor, the corrosion resistance is poor, the adhesion time is short, and sagging is likely to happen are overcome, and the spraying finish paint has the good corrosion resistance and cohesiveness.

The application belongs to the technical field of retanning agent preparation, and particularly relates to an environment-friendly melamine resin retanning agent and a preparation method thereof. Oxidized starch is prepared by using raw materials including starch, hydrogen peroxide and sodium persulfate; then the oxidized starch is mixed with raw materials such as melamine, dicyandiamide, urea, formaldehyde and sodium sulfamate to prepare a retanning agent prepolymer; finally, sodium alginate intercalated LDHs and polyethylene glycol are added, and after mixed reaction, the environment-friendly melamine resin retanning agent is prepared by spray drying, which can effectively improve the softness and thickening rate of leather and reduce the content of free formaldehyde.

The object of the present invention is to provide a UV- and thermo-curable resin composition that exhibits sufficiently high adhesive strength when subjected to only either UV-curing treatment or heat-curing treatment. The present invention provides a curable resin composition comprising the following components (A) to (F): (A) a polyfunctional (meth)acrylate compound, (B) a monofunctional (meth)acrylate compound with a molecular weight of 400 or less, (C) an epoxy resin, (D) a polyfunctional thiol compound, (E) a photo-radical initiator, and (F) a thermal curing accelerator, wherein total number (total amount) of (meth)acryloyl groups for the (A) polyfunctional (meth)acrylate compound, total number (total amount) of (meth)acryloyl groups for the (B) monofunctional (meth)acrylate compound, total number (total amount) of epoxy groups for the (C) epoxy resin, and total number (total amount) of thiol groups for the (D) polyfunctional thiol compound satisfy a predetermined relationship.

A high fatigue life rubber composite material and its preparation method and application. The present invention belongs to the field of rubber materials and their preparation. The purpose of the present invention is to solve the technical problem that the existing composite rubber materials have poor fatigue resistance. The high fatigue life rubber composite material of the present invention is prepared from natural rubber, butadiene-butadiene rubber, plasticizer, reinforcing filler, activator, sulfur, accelerator and antioxidant, and the butadiene-butadiene rubber is a random copolymer obtained by catalysis of an iron-based catalyst, wherein the sum of the ethylene and propylene side group contents is 40-60%. A high fatigue life rubber composite material of the present invention is used to prepare rubber products used in dynamic deformation conditions such as tires, rubber air springs, conveyor belts or sports shoe soles. The iron-based butadiene-butadiene rubber molecular chain used in the present invention has good flexibility and small hysteresis loss, which can effectively improve the fatigue life of the rubber composite material.

The invention provides a high-elongation two-component polyurethane structural adhesive suitable for bonding power batteries, comprising an A component and a B component in a volume ratio of (0.8-1.2):1; the A component comprises: 20-40 parts by weight of modified castor oil; 1-10 parts by weight of a small molecule diol chain extender; 1-10 parts by weight of a "rotaxane" structure; 40-80 parts by weight of an organic nitrogen-phosphorus polymer flame-retardant filler; 0.5-5 parts by weight of a white carbon black thixotropic agent; 0.3-3 parts by weight of a silane coupling agent; 0.01-1 parts by weight of a metal catalyst; 0.1-2 parts by weight of a blue color paste; the B component comprises: 20-40 parts by weight of a polymer polyisocyanate; 5-20 parts by weight of a polyether diol; 40-80 parts by weight of an organic nitrogen-phosphorus polymer flame-retardant filler; 0.5-3 parts by weight of a 4A molecular sieve water absorbent; 0.5-5 parts by weight of a white carbon black thixotropic agent; and 0.1-2 parts by weight of a yellow color paste. This two-component polyurethane structural adhesive introduces a unique "rotaxane" structure, which provides a higher elongation at break while meeting the requirements of structural bonding and bulk strength, and is particularly suitable for structural bonding in power batteries.

The invention provides a non-pre-crosslinking type white EVA adhesive film and application thereof. The non-pre-crosslinking type white EVA adhesive film is prepared from the following components: EVA particles, polyethylene, titanium dioxide, a crosslinking agent, an anti-hydrolysis agent, silane, an acid acceptor, acrylate, a light stabilizer and an antioxidant. Compared with a pre-crosslinking type white EVA adhesive film, the adhesive film provided by the invention has the advantages that the water permeability is reduced, the adhesive film can still keep relatively high adhesive force with glass after being moistened for 2000 hours, the yellowing value is relatively small after UV and damp-heat aging, the acetic acid content is low, and the use efficiency of an assembly can be ensured for a long time.

The invention relates to the technical field of epoxy resin, and discloses flexible modified epoxy resin and a preparation method thereof, polysiloxane of a side chain of a benzoxazine polymer and epoxy resin form the characteristic similar to a sea island structure, and the polysiloxane and the chain-shaped epoxy resin are mutually crosslinked to form a net so as to play a role in toughening; in addition, an active carboxyl functional group in the carboxyl benzoxazine containing the flexible unsaturated alkyl chain and an epoxy group in the epoxy resin can generate a chemical bonding effect during a curing reaction to form a two-phase structure, and crack propagation can be terminated when the epoxy resin is impacted by external force, so that the impact toughness of the epoxy resin is improved; in addition, the introduced flexible alkyl chain can promote the fluidity of the epoxy resin in a curing reaction, the molecular motion constraint is reduced, and the alkyl long chain and siloxane have very strong hydrophobicity and can be bonded into the epoxy resin to improve the water resistance of the epoxy resin.

The invention discloses an ultraviolet curing organic silicon adhesive, a preparation method and application, and belongs to the technical field of high polymer materials. Wherein the adhesive comprises a sulfydryl organic silicon material, an acrylate organic silicon material, vinyl modified polyvinyl chloride and other components, and the preparation method comprises the following steps: S1, preparing the vinyl modified polyvinyl chloride; s2, preparation of sulfydryl organic silicon grafted vinyl modified polyvinyl chloride; and S3, preparing the ultraviolet light curing organic silicon adhesive. According to the prepared ultraviolet curing organic silicon adhesive, a sulfydryl organic silicon material is grafted to vinyl modified polyvinyl chloride through a thiol-ene reaction, and acrylate organic silicon is connected, so that the light curing speed, the high and low temperature resistance and the adhesion of the adhesive are remarkably improved. The invention solves the problems of low curing speed and poor adhesive property caused by poor compatibility of polyvinyl chloride and an organic silicon material, and has the potential of being applied to preparation of a pressure-sensitive adhesive, a sealing adhesive, a laminating adhesive and a pouring sealant.

The present invention discloses a silane chain extender and its preparation method and application, belonging to the field of organic silicon technology. The structural formula of the silane chain extender is as follows:; The preparation method is: 1) Add aminosilane and solvent into a reaction bottle, connect a reflux condenser, add ketone compounds after heating, keep warm and react, and remove small molecules from the system; 2) After the reaction product of step 1) cools down, start to add isocyanate, and heat and react after the dripping is complete; 3) After the reaction product of step 2) cools down, add benzenesulfonic acid substances, and keep warm and react after the addition is complete, and finally obtain the silane chain extender. The present invention is applied to occasions with high elasticity requirements. The rubber strip is not easy to crack in an environment where expansion and contraction occur, and its performance can still be maintained for a long time.

The invention relates to the technical field of epoxy resin flame retardants, in particular to a bifunctional reactive flame retardant as well as a preparation method and application thereof. The preparation method of the bifunctional reactive flame retardant comprises the following steps: in the presence of a catalyst, carrying out substitution reaction on a bisphenol compound and methyl phosphorus dichloride in a solvent, and then carrying out hydrolysis reaction on a reaction product to obtain the flame retardant, and the bisphenol compound is hydroquinone or bisphenol A. The bifunctional reactive flame retardant prepared by the method can overcome the core corrosion effect of epoxy resin, silica powder and aluminum oxide, and the flame-retardant cured epoxy material prepared by the bifunctional reactive flame retardant has excellent flame retardance.

The invention provides a four-coating two-baking finish paint spraying method capable of realizing mass production and finish paint, belongs to the technical field of vehicle body spraying, and aims to solve the problem that a whole vehicle needs to be polished in a multi-layer varnish finish paint technological process, and the method comprises the following steps: sequentially spraying a water-based floating coat and colored paint on a vehicle body subjected to electrophoresis treatment, and carrying out flash drying treatment; single-component varnish or double-component varnish is sprayed to the automobile body, and drying treatment is carried out; thirdly, the defect point positions on the vehicle body are polished, the two-component varnish is sprayed, drying treatment is conducted again, and the vehicle body coated with the finish paint for four times and dried for two times is obtained; the single-component varnish is prepared from the following components in parts by weight: 35 to 45 parts of acrylic resin, 13 to 18 parts of first amino resin, 18 to 23 parts of anti-sagging resin, 5 to 8 parts of polyester resin, 1.5 to 2 parts of auxiliaries and 15 to 18 parts of solvent. The two-component varnish comprises a main agent and a curing agent; the main agent comprises 35-47 parts of acrylic resin, 14-24 parts of second amino resin, 16-25 parts of anti-sagging resin, 0.8-1.3 parts of an auxiliary agent and 15-38 parts of a solvent; the curing agent comprises a polyisocyanate curing agent.

The invention provides hyperbranched polyamide-functionalized graphene oxide (HPA-GO) modified bismaleimide (BMI) resin, and relates to the technical field of bismaleimide resin.The HPA-GO modified BMI resin is prepared from DMF (N, N-dimethylformamide) dispersion liquid of HPA-GO, diphenyl bismaleimide, deionized water and diallyl bisphenol A. The preparation method comprises the steps that the BMI resin is prepared from the following raw materials, the preparation method comprises the following steps: reacting diphenyl bismaleimide with DMF dispersion liquid of HPA-GO, washing, carrying out suction filtration, drying, adding diallyl bisphenol A, reacting, and carrying out stepped curing to obtain the HPA-GO modified BMI resin.

The present application relates to the technical field of nanocomposite materials, and specifically discloses a super wear-resistant self-lubricating carbon nanopolymer and its preparation process. A super wear-resistant self-lubricating carbon nanopolymer is made of the following raw materials in parts by weight: 35-50 parts of phenolic resin, 5-10 parts of bisphenol F resin, 0.2-1 parts of defoamer, 5-10 parts of modified phenolic resin fiber, 1-1.5 parts of pretreated graphene, 5-10 parts of polytetrafluoroethylene, 12-18 parts of nano-alumina, 6-10 parts of talcum powder, 0.5-3 parts of zirconium oxide, 0.2-1 parts of leveling agent, 1-5 parts of silicon carbide, 0.2-1 parts of antioxidant, 0.2-1 parts of ultraviolet absorber, and 25-35 parts of cardanol. The super wear-resistant self-lubricating carbon nanopolymer prepared in this application has the advantages of good toughness and good wear resistance.

The application provides a polyvinyl alcohol / chitosan composite compression hemostatic sponge with bacteriostatic function and a preparation method thereof, and belongs to the technical field of medical materials.The polyvinyl alcohol / chitosan composite compression hemostatic sponge with bacteriostatic function comprises a double-network hydrogel structure formed by carboxymethyl chitosan and aldehyde-based polyvinyl alcohol; the double-network hydrogel structure has high stability and fixity, so that the composite compression hemostatic sponge has excellent stability.The raw materials used in the application include carboxymethyl chitosan, aldehyde-based polyvinyl alcohol and antibacterial peptide, which are connected through covalent bonds and ionic bonds to form a double-network hydrogel structure.By introducing gallic acid and copper chloride, a metal-organic network structure can be formed, which can further improve the mechanical stability of the composite compression hemostatic sponge and further improve the antibacterial performance of the composite compression hemostatic sponge.

A high resilience wear-resistant sealing material and its preparation method application, belonging to the field of polymer material technology, the sealing material includes composite rubber, modified thermoplastic elastomer, expanded microspheres, maleic anhydride grafted polyethylene, composite wear-resistant filler, fiber reinforcement, etc.; the composite rubber is obtained by mixing nitrile rubber, silicone rubber, and PVM-MA copolymer sodium ethyl ester; the modified thermoplastic elastomer is obtained by fusing thermoplastic polyurethane elastomer TPU, thermoplastic polyamide elastomer TPAE, epoxy soybean oil, phenylpropyl dimethylsiloxy silicate and titanate coupling agent; the composite wear-resistant filler includes carbon black, silicon carbide, aluminum oxide and molybdenum disulfide, and the fiber reinforcement includes glass fiber and basalt fiber. The components are used in a certain proportion, and the sealing material prepared by a special preparation method can comprehensively improve the resilience and wear resistance, and the long-term use performance is stable and not easy to fatigue and age.

The invention provides a thermal tackifying pressure-sensitive adhesive composition. The thermal tackifying pressure-sensitive adhesive composition is prepared from the following components: an acrylate copolymer, double-end vinyl terminated isocyanate and a basic amine compound, wherein relative to 100 parts by weight of the acrylate copolymer, the content of the double-end vinyl terminated isocyanate is 0.5-3 parts by weight, and the content of the alkaline amine compound is 0.5-12 parts by weight. The pressure-sensitive adhesive prepared from the heat-tackifying pressure-sensitive adhesive composition disclosed by the invention is relatively low in initial stripping force, can be torn at will after being adhered, and has a positioning function; and after adhesion, through high temperature, the stripping force is improved, and the high adhesion performance required by a fixed part is achieved, so that the part loss caused by errors in the initial stage of adhesion is reduced, and the high-viscosity pressure-sensitive adhesive can be suitable for application occasions of conventional high-viscosity pressure-sensitive adhesives.

The application discloses a kind of high filling plant fiber reinforced epoxy vegetable oil-based glass-like high molecular composite material and preparation method thereof, and is prepared according to the following steps: (1) the synthesis of aldehyde group-containing intermediate: epoxidized vegetable oil is reacted with aldehyde group-containing compound in the presence of catalyst to obtain aldehyde group-containing intermediate; (2) melt premixing: aldehyde group-containing intermediate obtained in step (1) is melt mixed with dry plant fiber at 140~180 °C; (3) prepolymer formation: diamine compound is added to the mixture of step (2), wherein the molar ratio of amino group to aldehyde group is (1.1~1.6):1, and the mixture is continuously reacted to form a prepolymer; (4) curing forming: the prepolymer obtained in step (3) is subjected to mold forming and curing treatment to obtain a composite material. The application significantly improves the comprehensive performance of epoxy vegetable oil-based composite material, and the raw material source is extensive, and the process is green and environmentally friendly, which has wide application prospect in the field of recyclable high-performance structural materials.

This invention relates to the field of polymer materials, and discloses a grafted modified polyethylene, its preparation method, and its applications. The grafted polyethylene comprises polyethylene molecular chains and vinyl side chains grafted onto the polyethylene molecular chains; wherein the vinyl content in the polyethylene is 5-10 / 1000C, and the crosslinking density of the polyethylene is less than or equal to 2.3 × 10⁻⁶. ‑4 mol / mL. Polyethylene contains a high content of crosslinkable vinyl double bonds while having a low degree of crosslinking. This allows for a significant improvement in crosslinking performance while greatly reducing the amount of crosslinking initiator required, thereby ensuring that the resulting cable possesses excellent heat resistance, electrical properties, and mechanical properties.

The invention belongs to the technical field of waterproof coiled material preparation, and particularly relates to a weather-resistant polyethylene waterproof coiled material and a preparation method thereof. Epoxy functionalized polytetrahydrofuran ether glycol is doped into traditional bisphenol A-based epoxy resin, poly epsilon-caprolactone particles and fumed silica are added to prepare an adhesive, and the adhesive is combined with a polyethylene base material to obtain the weather-resistant polyethylene waterproof coiled material. The polytetrahydrofuran ether glycol and the poly epsilon-caprolactone particles synergistically improve the anti-aging performance and the waterproof performance of the adhesive, and the fumed silica improves the strength reduction of the epoxy resin in the modification process and improves the rheological property, so that the coiled material can meet the application requirements of outdoor and wet base layers and other harsh working conditions.

The invention discloses an OCA (Optical Clear Adhesive) full-lamination optical adhesive and a preparation method thereof, belongs to the technical field of optical adhesives, and aims to provide an optical adhesive with high optical performance, excellent flexibility and self-repairing capability. The optical cement is prepared by single-sided ultraviolet light gradient initiation curing of a prepolymer system consisting of a soft monomer, a hard monomer, a functional monomer, a dynamic cross-linking agent, a photoinitiator, an ultraviolet light absorber and a silane coupling agent. Through a light intensity depth attenuation effect caused by competitive light absorption of the ultraviolet light absorber, a gradient network structure of which the crosslinking density is continuously decreased progressively along the thickness direction is formed in situ in a single adhesive layer; a disulfide bond is introduced into a polymer network through a dynamic cross-linking agent, so that the material is endowed with self-repairing and stress relaxation functions.

The application discloses a resin composition, an electrical insulating part prepared from the resin composition and a preparation method of the electrical insulating part. The resin composition for the electrical insulating part of the application is composed of the following components in parts by weight: 70-90 parts of bisphenol A type epoxy resin, 10-30 parts of alicyclic epoxy resin, 45-65 parts of a curing agent, 300-500 parts of a heat-conducting filler and 5-30 parts of a toughening agent OX; the toughening agent OX is a bisphenol A type epoxy resin containing an oxazolidone structure. The special epoxy resin toughening agent containing an oxazolidone structure is added in the formula, the use of the alicyclic epoxy resin is reduced, and a formula with a higher Tg is obtained.

The invention discloses a low-viscosity high-hardness ultraviolet curing polyurethane resin which comprises the following components in parts by weight: 30-45 parts of acrylic hydroxyl ester; 20 to 30 parts of diisocyanate; 0.1 to 0.2 part of a catalyst; 1-3 parts of a polymerization inhibitor; 25 to 35 parts of a diluent; 1-3 parts of an antioxidant; and 1-5 parts of a photoinitiator. The invention further discloses a preparation method of the low-viscosity and high-hardness ultraviolet curing polyurethane resin. The viscosity and the hardness of the ultraviolet curing polyurethane resin are doubly optimized; on the basis of having considerable insulativity, low viscosity and high hardness are ensured, so that the requirements for preparing the insulating ink are met. Moreover, the comprehensive performance of the ink is greatly improved, so that the ink has excellent performance in the aspects of viscosity, hardness, insulativity, boiling resistance and the like, and is suitable for the application scene of a power battery insulativity ink jet printing process.

The present application belongs to the technical field of decorative panel preparation, and particularly relates to a high-wear-resistance decorative panel and a preparation process thereof. The high-wear-resistance decorative panel comprises a substrate layer, a decorative layer and a wear-resistant surface layer, and the wear-resistant surface layer contains modified wear-resistant particles. The modified wear-resistant particles are prepared by reaction of wear-resistant particles and a bridging agent, and the bridging agent is synthesized by reaction of 2-phenylbenzimidazole and bromophenylboronic acid. In the present application, the wear-resistant particles are chemically modified by the bridging agent, so that the wear-resistant particles are connected to the bridging agent through a borate ester bond, and then react with a resin matrix to form a chemical bond, thereby firmly anchoring the modified wear-resistant particles in the resin matrix. The dynamic reversible characteristics of the borate ester bond at the hot-pressing temperature enable the wear-resistant particles to directionally migrate to the stress concentration area of the surface layer during the hot-pressing process, thereby forming a surface-enriched distribution structure and significantly improving the wear resistance of the decorative panel. A flexible buffer layer is formed in the bottom layer area, thereby effectively releasing internal stress and avoiding surface cracking.

The invention relates to the technical field of carbon material preparation, in particular to a preparation method of boron-doped carbon microspheres with a high specific surface area and the boron-doped carbon microspheres. The preparation method comprises the following steps: reacting a boron-containing monomer with aldehyde and a catalyst in a solvent to obtain the boron-doped microspheres; and carbonizing the boron-doped microspheres to prepare the boron-doped carbon microspheres. The method has the beneficial effects that a boron-containing monomer with a specific structure is adopted as a boron source, and a substitution reaction on a benzene ring is inhibited by introducing a group to occupy part of active substitution sites on the benzene ring in advance, or introducing a group with an induced electron withdrawing effect, or increasing the spatial position of the benzene ring; therefore, the purpose of controlling the cross-linking density of the polymer microspheres is achieved. The prepared boron-doped carbon microspheres with the high specific surface area have the advantages of being large in specific surface area, rich in hole structure, high in boron content and the like at the same time, and can be applied to supercapacitor electrode materials, and the performance of a supercapacitor is improved.

The invention provides a silicone hydrogel contact lens and a preparation method thereof, and belongs to the technical field of contact lenses. The siloxane monomer is utilized to improve the high light transmittance and oxygen permeability of the contact lens, and the hydrophilic monomer endows the hydrogel with hydrophilicity and softness, so that the comfort level of the contact lens is improved; the polyethylene glycol diacrylate is used for reducing the crosslinking density and improving the surface wettability, so that the mechanical property and the surface wettability of the organic silicon hydrogel are favorably improved; the monomethyl itaconate enables the silicone hydrogel contact lens to have good hydrophilicity and high lubrication degree. By means of the monomers, the hydrophilicity and air permeability of the organic silicon hydrogel are improved, the contact lenses have high light transmittance, oxygen permeability and comfortable wearing feeling (hydrophilicity and high lubrication degree), and the high requirements of modern contact lenses for material performance are met.