963 results about "Active group" patented technology

The invention provides a diaphragm and a preparation method thereof and a lithium ion battery, the diaphragm comprises a porous support layer and a gradient functional layer, the porous support layer comprises a base membrane with the porosity of 45-60% and active groups modified on the surface of the base membrane, and the gradient functional layer comprises a heat conduction strengthening layer and an ion channel layer, the heat conduction strengthening layer comprises a first polymer and a modified boron nitride nanosheet, and the ion channel layer comprises a second polymer and a solid electrolyte nanowire. The porous supporting layer and the gradient functional layer are overlapped to form the composite diaphragm, so that high thermal stability, high wettability and high ion conductivity are synergistically realized, and formation of lithium dendrites can be inhibited.

The invention discloses a poly-Si film preparation method based on a vertical double-layer hot wire array thermal field design, which changes the surface temperature of a hot wire and the range of a cracking high-temperature region by adjusting the interlayer spacing of a double-layer hot wire array and the current of the double-layer hot wire, expands the cracking time and the cracking space of silane, promotes secondary cracking of the silane, and improves the yield of the poly-Si film. Components and concentration distribution of a silane cracking intermediate product reaching the surface of the substrate can be effectively controlled, and the ratio of SiH / SiH2 active groups is increased; and depositing the poly-Si thin film under the vacuum of 0.5 Pa-5. 0Pa, the substrate temperature of 200-560 DEG C and the deposition time of 10-60 minutes, after deposition is finished, raising the substrate temperature to 200-650 DEG C, and carrying out vacuum annealing on the grown poly-Si thin film to obtain the high-crystallization-rate poly-Si thin film. According to the method, the poly-Si thin film is grown by using a vertical double-layer hot wire array thermal field design, a high-temperature hot wire silane cracking technology and a vacuum annealing technology, and the crystallization quality of the poly-Si thin film can be obviously improved.

The invention discloses low-migration UV ink-jet ink and a preparation method thereof, and belongs to the technical field of novel ink. Comprising the following components in parts by mass: 10-15 parts of a dynamic cross-linked polyurethane acrylate oligomer, 5-8 parts of an epoxy silicone resin oligomer, 2-3 parts of modified silicon dioxide, 4-5 parts of a photoinitiator, 15-20 parts of sorbic acid modified color paste, 1-2 parts of nano cerium oxide and 0.5-1 part of an antioxidant. The molecular chain of the dynamic cross-linked polyurethane acrylate oligomer prepared by the invention contains an active group capable of forming a cross-linked structure and a dynamic covalent bond. The groups and bonds promote molecular chain crosslinking when the ink is cured, a three-dimensional network is formed, and the molecular crosslinking density is improved. Through interaction of palmitic acid modified silicon dioxide and oligomer, the palmitic acid modified silicon dioxide is uniformly dispersed in a matrix and interferes molecular chain movement during curing, so that the crosslinking density is further improved, an ink film layer is more compact and firmer, the wear resistance and the scratch resistance are improved, and the tinting strength and the stability are indirectly enhanced.

The invention relates to the technical field of additives for concrete, and particularly discloses a waterproof synergistic interface agent, an interface permeation type water reducing agent mother solution, an interface permeation type water reducing agent and a preparation method of the interface permeation type water reducing agent. The waterproof synergistic interface agent is prepared from the following raw materials: organic acid modified nano inorganic powder and polyhydroxy acrylate. Through the design of the raw materials of the waterproof synergistic interface agent, the surface active groups, the adsorption performance and the dispersity of the nano inorganic powder are increased, the grafting degree of polyhydroxy acrylate with other large monomers, small monomers and functional monomers is improved, the polyhydroxy acrylate is grafted or dispersed in a water reducing agent mother solution through a polymerization reaction, and the waterproof synergistic interface agent is prepared. By combining the synergistic anti-seepage filling effect of the nano inorganic powder, the internal phase interface structure of the concrete is improved, the adhesiveness of different interfaces and the binding force of new and old concrete interfaces are increased, and the hydration hardening product can improve the compactness and toughness of the concrete and improve the ion penetration resistance and mechanical property of the concrete; the problem that an existing water reducing agent is single in function is solved.

The invention belongs to the field of macromolecules, and particularly relates to a PBO fiber surface modification method for a synergistic copolymer coating through plasma treatment. According to the method, modification is designed by adopting a synergistic mechanism of plasma treatment and a functional coating: firstly, the PBO fiber is treated by oxygen plasma, a microstructure and an active group are formed on the surface of the PBO fiber, and the surface activity of the PBO fiber is rapidly improved; then coating a monomer solution containing a photoinitiator, exciting light to initiate free radical polymerization through ultraviolet irradiation, forming a random copolymer coating on the surface of the PBO fiber, and repairing the damage of oxygen plasmas to the PBO fiber structure while introducing active groups into the coating; and active groups formed by oxygen plasma treatment can enhance the adhesive force between the coating and the PBO fiber. Finally, the invention provides an environment-friendly and controllable PBO fiber surface synergistic modification technology, the intrinsic performance of the PBO fiber and the interface bonding strength are improved for a long time, and a support is provided for engineering application of the high-performance PBO fiber.

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 discloses a novel photocatalyst for producing hydrogen from organic matter wastewater and a preparation method of the novel photocatalyst, and relates to the technical field of photocatalysis. The photocatalyst disclosed by the invention is combined with oxidation-reduction capability, and can effectively degrade and produce hydrogen under the irradiation of sunlight. Through combination of quaternized porous tungsten oxide and vanadate radicals, silver vanadate load growth is promoted, the sunlight utilization rate is increased, and the electron-hole recombination rate is reduced. Reduced graphene oxide is used for pretreatment, active groups are introduced, the reduced graphene oxide is compounded with tungsten oxide / silver vanadate, the binding force is enhanced through heat treatment, photo-induced electron-hole pair compounding is inhibited through the conductivity, and the visible light catalytic performance is improved. The adsorption effect of porous tungsten trioxide and reduced graphene oxide can accelerate the degradation of organic matters. By optimizing the proportion of silver vanadate, tungsten oxide and reduced graphene oxide, the visible light response and charge separation efficiency are enhanced, the degradation and hydrogen production performance is improved, and light corrosion is reduced.

The invention belongs to the field of high polymer material chemistry, and particularly relates to double-network hydrogel based on sodium alginate / gelatin, a preparation method and dressing. A chemical method of grafting modification is adopted, grafting modification is carried out by designing abundant active groups on side chains of gelatin and sodium alginate, and based on traditional gelatin or sodium alginate hydrogel, not only is the thermal stability of gelatin improved, but also the biological activity of sodium alginate is improved, and the antibacterial property is achieved; the finally prepared SD / GelMA dual-network hydrogel wound dressing not only has excellent mechanical properties, but also has very high biocompatibility and antibacterial activity, and has huge application prospects and potential in the aspect of skin wound healing.

The invention relates to the technical field of plastic material preparation, and discloses a modified bamboo fiber, a PBAT composite material and a plastic object. The modified bamboo fiber comprises bamboo fiber subjected to hot pressing treatment in water and a closed aziridine cross-linking agent loaded on the bamboo fiber, and the mass ratio of the bamboo fiber subjected to hot pressing treatment in water to the closed aziridine cross-linking agent is 100: (1-10). The PBAT composite material comprises the following components in parts by weight: PBAT and modified bamboo fibers, and the mass ratio of the PBAT to the modified bamboo fibers is 100: (20-40). The modified bamboo fiber is subjected to hot pressing treatment in water, so that the generation of volatile gas caused by high-temperature processing can be avoided when the modified bamboo fiber is applied to the plastic material, and the interface interaction with the plastic material can be improved; the closed aziridine cross-linking agent can release active groups at high temperature, and can react with active functional groups such as hydroxyl and carboxyl on the surfaces of the bamboo fibers and the surfaces of the plastic materials, so that the interface interaction between the bamboo fibers and the plastic matrix is improved, and the tensile strength of the composite material is improved.

The invention discloses an all-solid-state composite dry conductive agent and a preparation method thereof, and belongs to the technical field of batteries. The all-solid-state composite dry conductive agent is prepared by the following steps: uniformly mixing carbon nanotubes, high-dispersion carbon black and graphene to obtain a primary mixture; then preparing a uniformly dispersed glue solution from the composite dispersant and water; and then adding the primary mixture into the glue solution, uniformly mixing, sanding, homogenizing, drying and crushing to obtain the product, the high-dispersion carbon black is obtained by oxidizing carbon black to form active groups such as carboxyl and hydroxyl on the surface of the carbon black, halogenating acyl and then reacting with lithium 2, 5-diaminobenzene sulfonate. The preparation method comprises the following steps: grafting histidine ester into carboxymethyl cellulose by using propylene glycol diglycidyl ester as a cross-linking agent, then introducing allyl-1, 3-sultone, then copolymerizing with lithium 2-acrylamido-2-methylpropanesulfonate and 3-aminobenzoic acid allyl ester protected by fluorenylmethoxycarbonyl, and then deprotecting to obtain the composite dispersant.

The present invention discloses a high-nickel ternary positive electrode material containing an organic-inorganic composite coating and a preparation method thereof, and relates to the technical field of lithium-ion batteries. The high-nickel ternary positive electrode material containing an organic-inorganic composite coating includes inorganic lithium-containing fast ion conductor particles, which are randomly distributed on the surface of the high-nickel ternary positive electrode material in a point shape, and are embedded in an organic conductive polymer film. The active group at one end of the organic conductive polymer is chemically bonded to the transition metal on the surface of the high-nickel ternary positive electrode material to form an M-O bond, so that the organic conductive polymer is firmly compounded on the surface of the high-nickel ternary positive electrode material. The present invention also provides a preparation method thereof. The high-nickel ternary positive electrode material containing an organic-inorganic composite coating provided by the present invention can simultaneously improve the stability and conductivity of the high-nickel ternary positive electrode material, and effectively solve the problems of poor thermal stability, many surface side reactions and short cycle life of the existing high-nickel ternary material.

The invention discloses a polytetrafluoroethylene compensator with good corrosion resistance and a preparation method thereof.The polytetrafluoroethylene compensator is composed of a corrugated pipe, a pipe connecting flange and an end flange, the pipe connecting flange and the end flange are located at the two ends of the corrugated pipe, the corrugated pipe is composed of a lining layer and a base material layer, and the base material layer is made of stainless steel; the preparation method comprises the following steps: firstly, carrying out surface grafting on nano aluminum oxide by using isocyanate silane, and introducing an active reaction group; then part of active groups react with benzotriazole, so that the corrosion inhibition and adhesion enhancement functions are realized; finally, enabling the residual active groups to react with hydroxylated polytetrafluoroethylene activated by alkali treatment, and coating a chemical inert layer on the surface of the residual active groups; the obtained core-shell structure functional filler is dispersed in epoxy resin to prepare a coating, and after the coating is coated on a stainless steel base material and cured, a high-performance compensator with high hardness, strong adhesive force, excellent corrosion resistance and weather resistance is formed.

The invention discloses an indole sophocarpidine derivative photoaffinity active molecular probe which is formed by connecting an active group and a reactive group, the active group is a sophocarpidine derivative, the reactive group is a substance containing a diaziridine group and an alkyne group, and the chemical formula of the sophocarpidine derivative is as shown in the formula I. The invention further discloses a preparation method of the indole sophocarpidine derivative photoaffinity active molecular probe. After Spodoptera frugiperda Sf9 cells are treated by the indole sophocarpidine derivative photoaffinity active molecular probe for 72 hours, the inhibition rate can reach 86.33%, potential target protein when the sophocarpidine derivative acts on the Sf9 cells can be determined by utilizing the indole sophocarpidine derivative photoaffinity active molecular probe, targeted modification of sophocarpidine is facilitated, and the application range of the indole sophocarpidine derivative photoaffinity active molecular probe is widened. Further, matrine pesticides with excellent insecticidal activity are efficiently synthesized, and agricultural pests are better prevented and controlled.

The invention relates to the field of ardealite treatment, in particular to a compound preparation for curing fluorine and phosphorus in ardealite and application thereof.The compound preparation is prepared from, by mass, 20-40 parts of modified clay minerals, 10-15 parts of clay minerals, 1-2 parts of coagulant, 0.1-0.6 part of auxiliaries and 180-200 parts of deionized water. The modified clay minerals are hydroxyl iron modified mixed clay minerals, the mixed clay minerals are obtained by mixing maleic anhydride grafted clay minerals and polyacrylic acid-sodium acrylate grafted clay minerals, and the composite preparation provided by the invention can greatly increase the removal rate of fluorine and phosphorus in phosphogypsum; wherein the modified clay mineral and the clay mineral have a synergistic effect, a three-dimensional structure with large porosity, large specific surface area and large surface active group content can be formed in a system, phosphorus and fluorine in phosphogypsum can be adsorbed to the maximum extent, and the modified clay mineral and the clay mineral have a wide application prospect.

The invention relates to the technical field of alloys, and discloses a high-strength silver-copper alloy and a preparation method thereof. The acidified carbon nanotubes are subjected to functional modification, methylbenzene-2, 4-diisocyanate reacts with surface active groups of the methylbenzene-2, 4-diisocyanate to introduce-NCO groups, then through hydroxyl reaction of-NCO and 4-hydroxyphthalic acid, a plurality of carboxyl groups are grafted on the surfaces of the carbon nanotubes, the carboxyl groups can firmly adsorb lanthanum nitrate through a coordination effect, and meanwhile, the carboxyl groups can also adsorb lanthanum nitrate through a coordination effect. The rare earth elements are prevented from being separated from the raw materials in the ball milling process, uniform distribution is ensured, the agglomeration tendency of the carbon nanotubes can be reduced, and the dispersity of the carbon nanotubes in the silver-copper alloy is improved; the carbon nanotubes have extremely high axial strength and excellent conductivity, the mechanical and electrical properties of the alloy material can be enhanced through load transfer and a conductive network effect, rare earth lanthanum is segregated at a grain boundary to form a pinning effect to refine grains, the alloy strength is further improved, and finally collaborative improvement of the strength and the conductivity of the silver-copper alloy is achieved.

Disclosed are an artificial hapten and artificial antigen of fentanyl, and a preparation method and application thereof. The artificial hapten of fentanyl according to the invention has an active group capable of being coupled with a carrier protein, and can be used as an antigenic determinant; and the artificial antigen of fentanyl further prepared can be immunized to obtain an anti-fentanyl antibody with high affinity, high sensitivity and strong specificity, and the antigen-antibody can be used in enzyme-linked immunity, immunochromatography and other technologies.

The invention belongs to the technical field of lithium ion battery positive electrode materials, and provides a plasma-assisted in-situ constructed lithium ion conductor coated high-nickel ternary positive electrode material as well as a preparation method and application thereof. Oxygen plasma active groups are formed through high-pressure ionization of oxygen, and the generated active groups interact with gas generated by thermal decomposition of an added solid source; the residual alkali on the surface of the high-nickel ternary positive electrode can be consumed, and a thin, continuous and compact lithium ion conductor coating layer with good conductivity is formed on the surface of the high-nickel ternary positive electrode material in situ, so that the development of the high-nickel ternary positive electrode material of the lithium ion battery is promoted. The high-nickel ternary positive electrode material prepared by the invention shows high specific capacity, excellent cycling stability, rate capability and first charge-discharge efficiency. Meanwhile, the preparation method provided by the invention is simple, rapid, efficient, convenient and low in cost, the residual alkali on the surface of the high-nickel ternary positive electrode material can be effectively removed, and the structural stability of the high-nickel ternary positive electrode material is improved.

The invention discloses a DNA synthesis method which comprises the following steps: processing an initial substrate according to a preset strategy to obtain a target substrate with a Mark pattern and a plurality of reaction sites, and adjusting the positions of the target substrate and an ink-jet printing device through the Mark pattern, so that the working directions of a reaction unit array and the device are consistent, and the subsequent operation accuracy is ensured; deprotecting the reaction sites to generate active groups; sequentially spraying a target monomer solution and an activator solution into the reaction sites of the preset area after deprotection treatment through an ink-jet printing device, and carrying out a coupling reaction with the active groups to obtain a mixed solution containing a nucleotide chain; carrying out cleaning, oxidation, capping and deprotection treatment on the mixed solution to obtain a single-layer base product; according to the target base sequence, determining a corresponding target monomer solution, and circularly carrying out a reaction to obtain a mixed solution containing a nucleotide chain; and obtaining the synthesized DNA according to the mixed solution. According to the method, high-throughput, high-quality and high-efficiency DNA synthesis can be realized.

The invention provides modified liquid epoxy resin, a liquid molding compound and a preparation method and application thereof, the modified liquid epoxy resin has a hard segment-soft segment-hard segment structure, the hard segment is composed of liquid epoxy resin, and the soft segment is composed of a flexible chain segment organic matter with an active group at the tail end. The liquid molding compound comprises the following components in percentage by mass: (A) 10-20% of the modified liquid epoxy resin; (B) 5-15% of a curing agent; (C) 70-90% of a filler; and (D) 0.1 to 1.5 percent of curing accelerator. The modified liquid epoxy resin provided by the invention can effectively reduce the crosslinking density, is beneficial to molecular movement, finally achieves the effects of reducing stress and shrinkage characteristics, can improve the toughness of a liquid plastic package material when being applied to the liquid plastic package material, reduces the internal stress and thermal expansion coefficient of the epoxy plastic package material, and has more excellent processability and process reliability.

The invention relates to a Fenton-like oxidation treatment method, in particular to application of a self-activated Fenton-like composite repair material, the composite repair material is CaO2 (at) Fe3O4 (at) BIP-BC, western blot biochar is used as a matrix, and magnetite and calcium peroxide are sequentially loaded on the surface of the matrix. Compared with the prior art, the method has the advantages that the high efficiency and the long-term effect of Fenton-like are improved through biochar surface active groups and calcium peroxide, the selectivity of removing target harmful bacteria and harmful bacteria genes is improved through western blot, and the activating agent and the oxidizing agent are added at the same time, so that the use cost and the operation complexity are reduced. According to the method, the defects that traditional Fenton-like oxidation treatment is poor in harmful bacterium and harmful bacterium gene obligate removal effect, short in treatment time, high in required dosage and serious in secondary pollution, and an activating agent and an oxidizing agent need to be used separately are effectively overcome; the efficient and long-acting remediation of soil and water bodies polluted by harmful bacteria and harmful bacteria genes through the Fenton-like reaction is realized.

The invention relates to an selective dry film for a circuit board and a preparation method of the selective dry film. The selective dry film for the circuit board comprises the following components: acrylic resin, an active monomer, modified boron nitride, hyperbranched polyether, an auxiliary agent and a solvent, wherein the modified boron nitride is obtained by reacting a silane coupling agent, trifluoromethacrylic acid and glycidyl methacrylate with boron nitride. The hyperbranched polyether is a polymer of glycerol and glycidyl. Materials such as acrylic resin are adopted as main components and compounded with modified boron nitride, so that compatibility and stability among the components are improved, more active groups are introduced, a firmer cross-linked structure is obtained, the strength of the dry film is further improved, and improvement of properties such as adhesive force and precision is facilitated; and the method has important significance on development and popularization of selective dry film products.

The invention belongs to the technical field of building materials, and provides a cement-based composite material with an organic-inorganic interpenetrating structure and a preparation method of the cement-based composite material. According to the preparation method disclosed by the invention, the monomer and the polymer containing the active group are introduced, the in-situ polymer formed by the monomer through in-situ polymerization and the polymer containing the active group form a double-network polymer, a single-network structure is refined, and the single-network structure and a cement hydration reaction product which is synchronously performed form an organic-inorganic interpenetrating structure; the interaction between double networks and the cement-based material is enhanced, meanwhile, the microstructure is optimized, the mechanical property of the single polymer modified cement-based material can be improved, the compressive strength is improved, and the breaking strength is further enhanced; the prepared cement-based composite material with the organic-inorganic interpenetrating structure has excellent breaking strength and compressive strength.

The utility model provides a photoelectrocatalysis assisted chemical mechanical polishing device which comprises a platform, a polishing disc, a transparent polishing pad, a polishing head, a photosensitive polishing solution swing arm and an ultraviolet lamp bead, the polishing disc is rotationally connected to the upper portion of the platform, and the transparent polishing pad is arranged on the polishing disc in a stacked mode. The photosensitive polishing liquid swing arm is connected to the platform and used for spraying polishing liquid to the transparent polishing pad layer, a liquid passing hole is formed in the transparent polishing pad layer in a penetrating mode, the polishing head is connected with the positive electrode of the power source, the polishing disc is connected with the negative electrode of the power source, and the ultraviolet lamp beads are embedded in the polishing disc. According to the photoelectrocatalysis-assisted chemical mechanical polishing device provided by the utility model, the photosensitive polishing solution swing arm is used for spraying the photosensitive polishing solution, and the ultraviolet lamp beads are arranged on the polishing disc, so that ultraviolet light irradiates the photosensitive polishing solution or a wafer below the polishing head through the transparent polishing pad, and strong-oxidation active groups are synchronously generated; the oxidation rate of silicon carbide on the surface of the wafer is improved, and the polishing efficiency of the wafer is improved.

The invention discloses a bacteriostatic food packaging bag and a preparation method thereof, and relates to the technical field of food packaging, the bacteriostatic food packaging bag comprises the following components by weight: 12-22 parts of bamboo fiber; 55 to 80 parts of TPS (Thermoplastic Polystyrene); 15-20 parts of a modified ethylene composite copolymer; 15 to 20 parts of modified chitosan; wherein the modified ethylene composite copolymer is obtained by polymerizing active group-containing ethylene and one of vinyl acetate, butene, hexene or octylene according to a molar ratio of 10: (3-6); the active group is at least one of amino and sulfonic acid group; the modified chitosan is sulfo-grafted chitosan, and the mass grafting rate is greater than 0.1 wt%. The preparation method has the advantages that the compatibility of a composition formula is improved through the modified ethylene composite copolymer and the modified chitosan, a uniform net structure is formed in a cross-linking reaction to serve as a supporting framework, the overall mechanical structure performance is enhanced through the bamboo fibers which are synergistically and uniformly distributed in the composition formula, and the degradable and non-toxic effects are achieved through the cooperation of the bamboo fibers and the TPS.

The invention discloses a universal biochip as well as a preparation method and application thereof. The preparation method of the universal biochip comprises the following steps: S1, soaking a substrate in a solution consisting of a silane reagent A, an alkaline reagent and a buffer salt solution for reaction, and curing to form a silicon dioxide film on the surface of the substrate; the material of the substrate is selected from any one of glass, metal, plastic, resin and a film material; s2, soaking the substrate treated in the step S1 in a solution of a silane reagent B connected with an active group for reaction so as to modify the active group on the surface of the silicon dioxide film; and S3, carrying out a coupling reaction on the surface active group of the substrate treated in the step S2 and a DNA probe or a group in protein to obtain the universal biochip. The method is suitable for various metal and non-metal material substrates, the preparation process is simple, the condition is mild, the biological chip can be processed into the required shape according to the material, and the application range of the biological chip is further expanded.

The invention discloses a modified polyurethane resin, a semi-cured material, a composite material and a preparation method of the modified polyurethane resin, the semi-cured material and the composite material. Part of an initial polyurethane molecular chain is opened to become a resin intermediate containing an initial polyurethane molecular fragment with an active group or a resin intermediate containing an initial polyurethane molecular fragment with a chain extension group; the preparation method comprises the following steps: preparing a resin intermediate, changing the resin intermediate into modified polyurethane containing an initial polyurethane molecular fragment with an active double-bond group through a grafting reaction, and curing the modified polyurethane into modified polyurethane resin, or mixing the modified polyurethane with reinforcing materials such as filler or fiber and the like to obtain the modified polyurethane resin. And curing to obtain the composite material based on the thermosetting modified polyurethane resin. In the process, the molecular weight and molecular structure of initial polyurethane are adjusted by designing and controlling chemical reaction, and modified polyurethane with target performance, a semi-cured material and a composite material based on the resin are obtained by designing and controlling additives.

The invention discloses a carbon nanotube and silver nanowire co-loaded cotton fabric, a preparation method and application, a pretreated cotton fabric is placed in a silane coupling agent solution, and after soaking treatment, washing and drying are performed to obtain a modified cotton fabric; the preparation method comprises the following steps: acidizing carbon nanotubes, and dispersing the acidized carbon nanotubes in deionized water to obtain acidized carbon nanotube dispersion liquid; the preparation method comprises the following steps: mixing a reducing agent, ferric sulfate, silver nitrate, polyvinylpyrrolidone and water, heating to react, centrifuging, washing, and dispersing a product into deionized water to obtain AgNWs dispersion liquid; the modified cotton fabric is soaked in a CNTs / AgNWs dispersion liquid prepared from the acidified carbon nanotube dispersion liquid and the AgNWs dispersion liquid, and the modified cotton fabric is taken out and dried. The cotton fabric is modified through oxysilane, active groups are introduced to the surface of the fabric, and the binding force of the cotton fabric and a conductive material is enhanced. The surface of the fiber is coated with the carbon nanotubes, the silver nanowires are in lap joint to fill gaps, the carbon nanotubes and the silver nanowires form a continuous and complete conductive network on the surface of the cotton fabric, and the conductivity is improved.

The invention relates to a preparation, regulation and control method of a thermoplastic elastomer encapsulating material in the technical field of new materials, which comprises the following steps: realizing an in-situ reaction process by controlling the concentration and reaction temperature of reactive functional groups in the encapsulating material according to an interface reaction rate constant and active group distribution density; if the reaction conversion rate reaches a preset value, a chemically bonded interface bonding layer is formed; monitoring the stress distribution state in the rubber coating layer by adopting a stress analysis algorithm, and when detecting that local stress concentration exceeds the yield strength of the material, dispersing a stress concentration area by adjusting the length of a flexible chain segment and the density of a rigid cross-linking point in a cross-linking network; and deformation data and a bonding strength change trend of the interface bonding layer in the temperature cycling process are obtained, if the bonding strength attenuation rate exceeds a preset threshold value, a dynamic cross-linking mechanism is activated, and the dynamic equilibrium state of interface bonding is maintained through fracture and recombination of a reversible covalent bond.

The invention belongs to the technical field of high polymer materials, and particularly relates to a strong-service degradable epoxy resin insulating material and a preparation method thereof. The preparation method adopts a step-by-step reaction and comprises the following steps: firstly, based on a molecular chain extension technology, carrying out fused ring series modification on epoxy resin by utilizing fused ring diol; and further grafting a flexible side chain on the resin molecular chain by taking an active group in the resin molecular chain after chain extension as a grafting site. According to the resin modification technology, the molecular chain of the resin can be extended, and the brittleness of the epoxy insulating material is improved by utilizing the chain entanglement effect of the flexible side chain; meanwhile, the electrical, mechanical and thermal properties of the epoxy insulating material are synergistically enhanced by regulating and controlling the rigidity and the flexibility of chain segments in resin molecules, improving the ordered stacking density of molecular chains in a cross-linked network and reducing the free volume ratio of the network, and meanwhile, the epoxy insulating material also has high degradation efficiency and can be widely applied to the field of insulating materials. The problem that an existing degradable epoxy insulating material cannot meet the requirement of the high-voltage electric power equipment insulation field is solved, and important technical significance is achieved.

The invention relates to the technical field of anti-aging coatings, in particular to a tire anti-aging coating and a preparation method thereof. According to the invention, the problems of poor adhesive force and poor aging resistance of a tire coating are solved; through the synergistic effect of the epoxy polysiloxane and the waterborne polyurethane-acrylate copolymer emulsion, multi-stage bonding of a tire / coating interface is realized, and the added fluorosilicone block copolymer can further form a protective barrier; by preparing modified nano silicon dioxide, active groups grafted by a silane coupling agent on the surface capture free radicals, and an oxidation chain reaction is blocked; n, N '-diphenyl-p-phenylenediamine released by the polyurea microcapsules can remove free radicals generated by oxidation in the coating, and the N, N'-diphenyl-p-phenylenediamine is matched with the compound light stabilizer to form a dynamic defense chain; a flexible long chain of the polycaprolactone polyol inhibits crack propagation through free volume filling, and the four components synergistically improve ultraviolet resistance, ozone resistance and oxidation corrosion resistance; and through a staged low temperature-medium temperature-high temperature gradient curing strategy, the adhesive force of the coating is improved.