46results about How to "Play a role in self-healing" patented technology

The invention belongs to the field of anticorrosion materials, and relates to a green and environment-friendly method for protecting metal from corroding, which can particularly control metal corrosion for long time effectively, and play a role in self-repairing the metal surface to a certain extent. The method is characterized in that an inhibitor molecule and polyelectrolyte are alternately deposited on the surface of a silicon dioxide nano-particle through green environment-friendly type metal inhibitor micromolecules and polyelectrolyte by adopting layer-by-layer self-assembly technology and utilizing the penetrating controllability of a polyelectrolyte self-assembly membrane so as to prepare a functional nano-particle with the inhibitor and the polyelectrolyte self-assembly composite membrane which are coated on the surface; and the prepared functional nano-particle is mixed with sol-gel to prepare the functional sol-gel membrane coated on the metal surface to be protected. The coating has the function of metal surface self-repairing, and ensures that the inhibitor molecules released by the functional membrane are adsorbed on the metal surface to reform a protecting membrane in a coating damaged microsection to play a certain role in self repairing. The method is applicable to corrosion protection of various metals.

The invention provides a method for preparing a lithium ion battery negative electrode binder, and a method for preparing a lithium ion battery negative electrode material. The crosslinked PEI binderprepared in the invention has the advantages of high solubility in water, low toxicity, non-flammability, greenness, environmental protection, and realization of industrial production; the prepared crosslinked PEI binder has a hyperbranched network structure, and the structure can form a multidimensional strong hydrogen bond together with silicon in order to firmly wrap silicon nano-particles, andthe flexible hyperbranched PEI molecular chain can effectively buffer the stress generated by the volume expansion of silicon, and flows to the damaged surface when the volume of the silicon shrinksto afresh form a hydrogen bond in order to achieve an effective self-repairing effect; and the network structure can effectively limit the movement of silicon, improve the deformation resistance of electrodes and ensure the integrity of a negative electrode, and can effectively solve the volume effect of the silicon negative electrode, so the cycle stability of the silicon negative electrode is greatly improved, thereby the demand of electric vehicles and other large energy storage devices for high specific capacity batteries is met, and the development prospect is broad.

The invention discloses a preparation method of a graphene oxide coated carbon microsphere composite material. The method comprises the following steps: preparing a dextrose solution as a carbon source; performing hydrothermal reaction under an acidic condition; washing the obtained product in a plurality of times; performing suction filtering; drying to obtain carbon microspheres; dissolving thecarbon microspheres in a mixed solution consisting of water and absolute ethyl alcohol; then adding a mixed solution of a silane coupling agent and the absolute ethyl alcohol; performing condensing and reflowing under a room temperature or a heating condition; washing the obtained product in a plurality of times; performing suction filtering; drying to obtain modified carbon microspheres; adding graphene oxide to DMF; then adding an activating agent; ultrasonically treating to obtain a graphene oxide solution; adding the modified carbon microspheres to the graphene oxide solution; ultrasonically processing to obtain an uniform mixed solution A; adding a catalyst to the mixed solution A; performing condensing and reflowing under a heating condition; washing the obtained product in a plurality of times; and performing suction filtering and drying to obtain the graphene oxide coated carbon microsphere composite material.

The invention discloses a porous concrete waterproofing agent and a preparation method thereof. The waterproofing agent is prepared from, by weight, 25-40 parts of modified gel, 4-6 parts of an oxidizing agent, 5-9 parts of a cross-linking agent and 3-5 parts of a photoinitiator; the modified gel is prepared from, by weight, 30-40 parts of pretreated microspheres, 25-30 parts of 3,4-dihydroxyphenylacetic acid, 15-20 parts of N-hydroxysuccinimide, 15-20 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 18-25 parts of sodium alginate and 10-14 parts of propyne. According to the porous concrete waterproofing agent and he preparation method thereof, process design is simple, and component proportion is reasonable; chitosan and sodium alginate are modified, and a Michael addition reaction and a chemical click reaction are used for forming a compact double-gel network, so the waterproof and seepage-proof performance of concrete can be effectively improved in use, meanwhile, the waterproofing agent can be self-repaired, and the waterproofing agent can be widely applied to concrete construction and has high practicability.

The invention discloses a heat-insulation-and-bearing-integrated carbon aerogel and ceramic layered composite material and a preparation method and application thereof, and belongs to the technical field of a carbon aerogel and ceramic composite material. The composite material comprises a high-strength carbon aerogel body layer, a function gradient SiC and carbon aerogel transition layer, and a superhigh-temperature ceramic and SiC antioxidant composite coating. The high-strength carbon aerogel body layer is made through five steps of solution preparation, sol-gel, solvent replacement, normal-pressure drying and high-temperature carbonization through normal-pressure drying technology. The function gradient SiC and carbon aerogel transition layer is made by deep deposition of SiC on a carbon aerogel surface through a chemical vapor infiltration process. The superhigh-temperature ceramic and SiC antioxidant composite coating is made through compound technology of spraying and chemical vapor deposition. The composite material is good in ablation and oxidation resistance, low in thermal conductivity and density, and high in strength, can resist high temperature as high as 1800 DEG C, and is suitable for heat-insulation materials of aircrafts.

The invention relates to a silane coupler-coated self-restoration agent which is prepared from the following components in parts by weight: 100 to 130 parts of active mineral and 0.2 to 7.0 parts of silane coupler, wherein the active mineral is of mineral residues, coal ash, cement or coal gangue; and the KH560 silane coupler and the KH570 silane coupler are adopted. The invention further provides a preparation method and an application of the silane coupler-coated self-repairing agent. The active mineral is coated by the silane couplers, so that a waterproof protective film is formed on the surface of the active mineral. Thus, the activity of the active mineral is changed into the potential activity. Therefore, the active mineral cannot participate in a hydration reaction in a cement slurry system for well cementation, and can perform the hydration reaction only when the surface film of the active mineral is damaged due to the damage of a cement ring for the well cementation, so that a hydration product is formed so as to automatically repair the damaged position of the cement ring. As a result, the silane coupler-coated self-restoration agent has a great significance for guaranteeing the service life and the mining safety of oil and gas wells.

The invention belongs to the technical field of glass fiber processing and specifically relates to an epoxy resin modified starch film-forming agent. The method comprises the following steps: utilizing yeast to consume citric acid; slowly releasing cupric ions combined with citric acid and reducing cupric ions by using L-ascorbic acid; adsorbing the reduced copper nanoparticle by poly (styrene-acrylic acid), thereby acquiring the dry bottom precipitate; heating and pasting the corn starch; utilizing a potassium hydroxide solution to disperse the amylose in the corn starch and then dissolving in a sodium chloride solution; centrifugally separating and then mixing and refining the supernatant containing the amylose and n-butyl alcohol; by using sodium hydroxide as a catalyst, reacting the refined corn starch with 3,4-epoxy cyclohexyl methyl 3,4-epoxy cyclohexyl formate, thereby acquiring epoxy resin modified refined corn starch; and ball-milling and mixing the epoxy resin modified refined corn starch with the dry bottom precipitate, thereby acquiring the epoxy resin modified starch film-forming agent. The epoxy resin modified starch film-forming agent provided by the invention has excellent film-forming property, low use viscosity and high storage stability.

The invention discloses a high-conductivity polymer solid electrolyte and a preparation method thereof. The preparation method comprises the following steps: adding PEO powder into a solution containing lithium salt, then adding perovskite quantum dots, heating and stirring at 50-70 DEG C for 20-28 hours to obtain uniform slurry, putting the slurry into a mold to form a membrane, removing a solvent, and finally performing vacuum drying to prepare a high-conductivity polymer solid electrolyte membrane. A PEO-based polymer solid electrolyte is mainly modified, the room-temperature ionic conductivity, the lithium ion transference number and the compatibility to a lithium metal negative electrode can be greatly improved through the modified polymer solid electrolyte, and finally the PEO-based polymer solid electrolyte with the high conductivity characteristic is obtained.

The invention provides a composite additive for enhancing the self-repairing property of a cement-based material. The composite additive is prepared from the following components in percent by weight:5%-10% of free calcium-oxide powder, 10%-20% of calcium stearate, 40%-74% of calcium-oxide powder, 10%-20% of fumaric acid and 1%-10% of lithium silicate powder. The composite additive for enhancingthe self-repairing property of the cement-based material has the advantage that the self-repairing property of the cement-based material can be improved and enhanced.

The invention relates to the technical field of building materials, in particular to self-repairing cement for a thermal damage tunnel, the self-repairing cement is prepared from the following raw materials in percentage by mass: 67-89.5% of component A, 10-20% of component B, 0-10% of clay brick powder, 0.5-2% of CaCO3 whisker and 0-1% of water-retaining agent; each of the component A and the component B comprises 90-95% of self-repairing cement clinker and 5-10% of dihydrate gypsum; the self-repairing cement clinker is prepared from 20-30% of C3S, 35-55% of C2S, 1-3% of C3A, 17-26% of C4AF and 4-8% of MgO; the size of periclase in the self-repairing cement clinker of the component A is less than 1 [mu] m; the size of periclase in the self-repairing cement clinker of the component B is 35 [mu] m, and the particle size of 47-69% of the component B is greater than 65 [mu] m. Through the self-repairing cement, the problems of early structural damage, wide later cracks and poor durability of lining concrete can be effectively prevented.

The invention relates to a wet rubbing fastness improver for dyed fabrics, belonging to the technical field of preparation of textile aids. Firstly, citric acid is utilized for complexing and adsorbing ferrous ions in a solution and is gradually consumed by saccharomycetes during reaction, and ferrous ions are released and are reduced into superfine iron powder through reducibility of L-ascorbic acid and is simultaneously is adsorbed with polyaspartic acid, so that the agglomeration of the iron powder is avoided; and the superfine iron powder is taken as a core and is matched with L-ascorbic acid and the like to form a reducing agent, copper ions are reduced by virtue of the reducing agent so as to generate superfine copper powder, the superfine copper powder is subjected to centrifugal drying to generate composite superfine powder, and the composite superfine powder is subjected to ultrasonic dispersion and reacts with potassium persulfate as an initiator, so as to generate wet rubbing fastness improver for the dyed fabrics. The prepared wet rubbing fastness improver for the dyed fabrics has a good fastness improvement effect and has wide application prospects.

The invention discloses polyester lubricating oil and a blending process thereof. The polyester lubricating oil comprises the following components in percentage by mass: 18-25 percent of PAO4 base oil, 38-44 percent of PAO6 base oil, 12-16 percent of polyol ester base oil, 10-12 percent of a tackifier, 0.2-0.5 percent of a pour point reducer, 0.7-1.2 percent of a friction modifier and 11.30001-12.70003 percent of a complexing agent, wherein the complexing agent comprises 8.0-8.5 mass percent of high-alkali number petroleum calcium sulfonate, 2.0-2.5 mass percent of zinc butyl octyl dithiophosphate, 1.3-1.7 mass percent of zinc dialkyl dithiophosphate and 0.0001-0.0003 percent of methyl silicone oil ester. The polyester lubricating oil disclosed by the invention can meet the performance of the traditional lubricating oil, is high in stability, can achieve the effects of reducing pollution emission and energy consumption and automatically repairing abrasion equipment and has an environment-friendly effect.

The invention discloses a composite liquid crystal film capable of being rapidly self-repaired and a preparation method thereof. The composite liquid crystal film capable of being rapidly self-repaired comprises an anti-ultraviolet PET transparent conductive film with one side plated with ITO, a polymer self-repairing material liquid crystal composite system thin layer and a PET transparent conductive thin film with one side plated with ITO, and the three layers are connected from top to bottom. According to the composite liquid crystal film capable of being rapidly self-repaired, the wear resistance and the service life of the film are improved; meanwhile, the ultraviolet aging resistance of the film is greatly enhanced; and the contrast ratio and the response time of a writing board are greatly improved, and favorable conditions are created for self-repairing of a polymer network. In addition, the polymer network in the film can be self-repaired after being damaged. The composite liquid crystal film capable of being rapidly self-repaired has excellent stability and long service life, the production process is simple, the manufacturing cost is low, and industrial production is facilitated.

The invention discloses nano graphite fluoride lubricant oil and a preparation method therefor. The nano graphite fluoride lubricant oil is prepared from the following ingredients in parts by weight:250-350 parts of base oil, 10-15 parts of detergent, 5-18 parts of dispersant, 3-10 parts of foam inhibitor, 5-15 parts of viscosity index improver, 15-30 parts of nano graphite fluoride, 1-2 parts ofemulsifier, 10-25 parts of extreme-pressure antiwear additive, 2-5 parts of pour point depressant and 3-9 parts of alcohols. According to the nano graphite fluoride lubricant oil prepared by the preparation method, a layered structure of the nano graphite fluoride is prone to sliding, the friction factor is small, and thus, the nano graphite fluoride lubricant oil has an excellent lubricating property. The graphite fluoride is highly stably dispersed in lubricant oil, is uniform in dispersion, is of a nanometer scale, is very small in particle size, easily enters a friction area and will deposit on a microscopic friction area of a worn-out surface under pressure to exert a self-repairing action, so that the nano graphite fluoride lubricant oil has excellent extreme-pressure and antiwear properties, can adapt to harsh environmental conditions such as high temperatures and extreme pressure and is environmentally friendly.

The invention relates to the technical field of concrete, and particularly discloses a permeable concrete and a preparation process thereof. The permeable concrete comprises the following components in parts by weight: 800-1000 parts of coarse aggregate; 75-100 parts of water; 300-400 parts of Portland cement; 20-30 parts of a hydrophobic agent; 4-6 parts of a water reducing agent; 4-6 parts of anair entraining agent; and 5-8 parts of a buffer agent. The preparation process of the permeable concrete comprises the following steps: step 1, mixing and stirring the coarse aggregate and the Portland cement in proportion, then adding water and the water reducing agent in proportion, and stirring; step 2, adding the air entraining agent, the hydrophobic agent, the buffer agent and a self-repairing material into the mixture obtained in the step 1 in proportion, stirring, and controlling the stirring speed to be 100 r/min, so as to obtain a premix; and step 3, stirring the premix obtained in the step 2, controlling the stirring speed to be 100 r/min, paving the premix on a construction surface, and carrying out maintenance, compaction and molding to obtain the permeable concrete. The permeable concrete provided by the invention has the advantage of good frost resistance.

The invention discloses an environment-friendly release agent for autoclaved aerated concrete blocks. The environment-friendly release agent is prepared from the following raw materials in parts by weight: vegetable oil, a POSS-phosphorylated vegetable oil polymer, polyethylene glycol, nano calcium carbonate, ammonium polycarboxylate, a compound emulsifier, C12 alcohol ester, emulsified silicone oil, xanthan gum and water. The invention also discloses a preparation method of the environment-friendly release agent for autoclaved aerated concrete blocks, which comprises the following steps: dispersing the POSS-phosphorylated vegetable oil polymer into the vegetable oil containing polyethylene glycol to obtain a dispersion liquid; dissolving a compound emulsifier, emulsified silicone oil and xanthan gum in hot water to obtain emulsified water; and adding nano calcium carbonate, ammonium polycarboxylate and emulsified water into the dispersion liquid, adding the C12 alcohol ester and adding water for dilution, and uniformly stirring all the components to obtain the modified vegetable oil environment-friendly release agent. The release agent disclosed by the invention has the advantages of high film forming speed, small adhesion amount, low cost, no toxicity, no pollution and good release effect.

The invention discloses a self-repairing geopolymer-based permeable crystallization waterproof material and a preparation method thereof. The self-repairing geopolymer-based permeable crystallization waterproof material is prepared from the following components in parts by weight: 20 to 50 parts of metakaolin, 10 to 30 parts of ground superfine slag powder, 5 to 8 parts of fly ash, 3 to 5 parts of fused silica powder, 20 to 30 parts of an alkaline activator, 2 to 5 parts of a surface modifier, 2 to 10 parts of a silane impregnant, 2 to 3 parts of a penetrant, 0.5 to 2 parts of a water reducing agent, 5 to 15 parts of an expanding agent, 0.1 to 1 part of a retarder and 0.1 to 0.5 part of an early strength agent. The self-repairing geopolymer-based permeable crystallization waterproof material provided by the invention not only has relatively high compressive strength, but also has relatively good toughness, durability and good self-healing performance; and when a waterproof layer or a repaired crack is damaged, the alkali excitation reaction and the active substance are activated again when encountering water and are condensed into a compact crystal, so that a self-repairing effect is achieved.

The invention relates to an anticorrosive material. The material is prepared from the following raw materials in parts by weight: 50 to 80 parts of an isocyanate-terminated polyurethane prepolymer, 2 to 5 parts of aminopropyltriethoxysilane, 3 to 5 parts of filler, 3 to 5 parts of fly ash, 15 to 28 parts of zinc powder, 3 to 5 parts of modified tin dioxide, 3 to 5 parts of a carbon nanotube material, 10 to 30 parts of water, 5 to 6 parts of anticorrosive microcapsules and 0.5 to 2 parts of amino trimethylene phosphonic acid. According to the invention, the anticorrosive microcapsules are added into the anticorrosive material, so that the anticorrosive material has certain self-repairing performance, when the anticorrosive material generates cracks under the action of external force, the microcapsules are broken and release linseed oil and tung oil in the microcapsules, and the linseed oil and tung oil have a repairing effect on the cracks, so that the self-repairing effect on an anticorrosive coating is achieved.