3000 results about "Silanes" patented technology

The invention discloses a nano blocking agent for drilling fluid and a preparation method thereof, and belongs to the technical field of blocking agents, the nano blocking agent for drilling fluid is prepared by reaction of a core layer blocking agent and a shell layer blocking agent, the core layer blocking agent is prepared by reacting nano silicon dioxide, gamma-methacryloxypropyltrimethoxysilane and a first part of vinylphosphonic acid, and has secondary blocking capability; and the shell blocking agent is prepared by reacting a second part of vinyl phosphonic acid, styrene and 2-dodecene-1-yl succinic anhydride, and has the characteristic of flexibility. The nano plugging agent has rigid supporting and flexible deformation capabilities, and the high-temperature stability and compressive strength of a plugging layer are remarkably improved. The chemical binding force of the plugging agent and the rock is enhanced; the hydrolysable methoxyl reserved in the core layer provides a secondary plugging function, and the plugging validity period is prolonged. The invention relates to a preparation method of a nano blocking agent for drilling fluid, which is used for preparing the nano blocking agent for drilling fluid.

The invention relates to the field of oil well opening and killing fluid production, in particular to a solid-free well killing fluid for shale oil reservoir and a preparation method of the solid-free well killing fluid. The solid-free well killing fluid for the shale oil reservoir comprises the following raw materials in parts by mass: 50-70 parts of water, 10-30 parts of a density regulator, 3-6 parts of a copolymer tackifier, 1-3 parts of a dispersant, 3-7 parts of a filtrate reducer and 2-4 parts of a corrosion inhibitor. The copolymer tackifier is obtained by initiating copolymerization by taking acrylamide, a quaternary ammonium salt-containing monomer, an unsaturated silane coupling agent and polyethylene glycol diacrylamide as monomer free radicals, and the dispersing agent comprises gas-phase nano silicon dioxide and a fluorine-containing surfactant. Through reasonable compatibility of all the components in the formula, especially the copolymer tackifier, the effect that one agent has multiple functions is achieved, and meanwhile the high temperature resistance, the corrosion inhibition performance and the clay stability of the well killing fluid are improved.

The invention discloses a silane coupling agent grafted MXene composite material and a preparation method thereof, relates to the technical field of composite materials, and aims to provide a surface modification method to enable the MXene composite material to be in good contact with a PDMS (polydimethylsiloxane) material. The surface modification method comprises the following steps: S1, performing wet chemical etching on an MAX phase material in combination with mechanical stripping to obtain a few-layer MXene dispersion liquid; s2, strong base is added into the few-layer MXene dispersion liquid in the step S1, the PH value of the few-layer MXene dispersion liquid is adjusted, a reaction is conducted in the argon environment, and hydroxyl modified MXene dispersion liquid, namely h-MXene dispersion liquid is obtained; and S3, adding a silane coupling agent and a catalyst into the h-MXene dispersion liquid in the step S2, and reacting in an argon environment to obtain the silane coupling agent grafted MXene composite material.

The invention provides a high-insulation black organic silicon coloring agent and a preparation method thereof. The high-insulation black organic silicon coloring agent comprises the following raw materials in parts by mass: 100 parts of a silicone oil carrier; 3-5 parts of passivated carbon black; 1-3 parts of fumed silica; wherein the passivated carbon black comprises carbon black and an organic silicon layer coated on the surface of the carbon black; the organic silicon layer is obtained by graft polymerization of polymethyltriethoxysilane and a functionalized silane coupling agent on the surface of the carbon black; the functionalized silane coupling agent comprises at least one of an aryl silane coupling agent and a fluorine-containing silane coupling agent. According to the black coloring agent, the advantage of high blackness of carbon black is maintained, meanwhile, the electric insulation performance and dispersion stability of the black coloring agent in a silicone oil system are remarkably improved, the problems that the carbon black is high in conductivity, poor in interface compatibility and prone to agglomeration are solved, and the black coloring agent is especially suitable for being applied to organic silicon materials with the high requirement for the insulation performance.

The invention belongs to the technical field of environmental protection, and provides a preparation method of an imine-modified functionalized mesoporous magnetic silicon dioxide nano material. The method comprises the following steps: synthesizing Fe3O4 magnetic nanoparticles in a Fe < 2 + > / Fe < 3 + > alkaline hydrolysis system through a coprecipitation method; then coating the magnetic nanoparticles with an amorphous silicon dioxide layer by taking TEOS (tetraethoxysilane) as a silicon source by adopting a sol-gel method, so as to prepare magnetic silicon coated nanoparticles; the prepared nano-particles are subjected to secondary silicon coating guided by a cetyl trimethyl ammonium bromide (CTAB) mesoporous template agent, and mesoporous magnetic silicon nano-particles are formed after calcination; and finally, carrying out surface amination modification on the mesoporous magnetic silicon nano-particles by utilizing an amino silane coupling agent, and then carrying out condensation reaction on the mesoporous magnetic silicon nano-particles and various aldehyde derivatives to construct imine bonds, so as to obtain the imine-modified functionalized mesoporous magnetic silicon dioxide nano-material. The imine-modified functionalized mesoporous magnetic silicon dioxide nano-material formed by the invention has the characteristics of efficient adsorption, rapid magnetic recovery and excellent environmental stability, and can effectively remove polystyrene micro-plastics and organic pollutants in a water body.

The invention provides a preparation method and application of a wear-resistant polyimide material, and the preparation method comprises the following steps: S1, adding a polyimide material into an alkali solution for reaction, cleaning reactants with acid and ethanol, and drying to obtain an activated polyimide material; s2, adding the activated polyimide material into a silane coupling agent solution for reaction, cleaning reactants with ethanol and water, and drying to obtain a modified polyimide material with silicon-oxygen bond active sites on the surface; s3, adding the modified polyimide material with silicon-oxygen bond active sites on the surface into a modified epoxy resin solution, adjusting the pH value to be acidic, and reacting to obtain the wear-resistant modified polyimide material, wherein the modified epoxy resin solution is obtained by reacting a silane coupling agent with acrylate. According to the method, the wear resistance of the polyimide can be improved on the premise that other properties of the polyimide material are not influenced.

The invention relates to a preparation method and application of high-temperature-resistant organic modified bentonite. According to the method, three organic modifiers of long-chain quaternary ammonium salt, amide and a silane coupling agent are compounded to modify bentonite, and the problem that a single modifier is easy to decompose at high temperature is solved through the synergistic effect of physical intercalation, chemical crosslinking and interface bonding; and secondly, a three-dimensional stable structure is constructed by adding nano silicon dioxide and a composite modifier, so that the high temperature resistance and dispersion stability of the modified bentonite are further enhanced. According to the invention, the requirements of deep well and ultra-deep well drilling fluids on the temperature resistance and rheological property of the treating agent can be met, and the ultra-deep well drilling fluid which can tolerate the high temperature of 250-300 DEG C, and is low in filter loss and good in dispersion stability can be obtained.

The invention relates to a fly ash-based MOFs adsorption-catalysis material integrated preparation method, and belongs to the field of solid waste treatment and resource utilization. The material takes industrial solid waste fly ash as a matrix, and is prepared by the following steps: firstly, carrying out alkali modification and silane coupling agent surface activation treatment on fly ash to form a high-activity matrix; then loading a metal organic framework (MOFs) on the surface of the activated fly ash through an in-situ synthesis process to form a porous composite carrier; the integrated material with CO2 adsorption and catalytic conversion functions is further prepared through impregnation of a copper-based active component and a high-temperature calcination process. According to the invention, the problems of high energy consumption, high cost and low comprehensive utilization rate of fly ash of the traditional CO2 capture and utilization technology (ICCU) are solved, high-valued resource utilization of industrial solid waste and efficient capture and conversion of CO2 are synchronously realized, and the method has dual values of environmental protection and economy.

The invention provides a high-hydrophobicity anti-pollution flashover coating and a preparation method thereof, and relates to the field of coatings. The silicone rubber composition is prepared from the following raw materials in parts by weight: 80 to 100 parts of hydroxyl-terminated polydimethylsiloxane; 5 to 15 parts of modified nano silicon dioxide; 10 to 30 parts of a composite self-repairing microcapsule; 10 to 25 parts of a flame retardant; 3-8 parts of a cross-linking agent; 0.5-2 parts of a catalyst; 1-5 parts of an accelerant; 40 to 100 parts of a solvent; the modified nano silicon dioxide is fumed silica subjected to surface treatment by a fluorine-containing silane coupling agent and a platinum catalyst; the capsule wall of the composite self-repairing microcapsule is a polylactic acid-glycolic acid copolymer, and the capsule core of the composite self-repairing microcapsule is a mixed solution of a hydroxyl-terminated polydimethylsiloxane oligomer and methyltris (methylethylketoximino) silane. The coating has excellent hydrophobicity, weather resistance and targeted repair function.

The invention discloses a high heat storage density stable thermochemical adsorption composite heat storage material and a preparation method thereof, the high heat storage density stable thermochemical adsorption composite heat storage material comprises 54%-57% by mass of mixed salt and 43%-46% by mass of a porous material, the mixed salt comprises MgSO4 and MgCl2, the mass ratio of MgSO4 to MgCl2 is 9: 1-6: 4, and the porous material is expanded perlite modified by nano alumina or a silane coupling agent. The high-heat-storage-density stable thermochemical-adsorption composite heat storage material provided by the invention is simple in preparation method, and the modified expanded perlite is used as a carrier of the mixed hydrated salt; the obtained composite heat storage material has excellent performance: the salt-containing load rate is 114-121%, the water absorption rate is 1.2-1.28 g / g, the heat storage density is 1123.5-1208.6 kJ / kg, the heat storage temperature is 133.4-141.3 DEG C, the structural strength is 10.346-12.631 kPa, the structural stability is 99.27-99.53%, and the stability is 79.7-83.3% after circulation for 30 times, that is, the composite heat storage material is high in heat storage density, high in water absorption rate, low in heat storage temperature, high in strength and not easy to scatter and fall off, and the composite heat storage material is suitable for large-scale production. And the material also has relatively good cycling stability.

The invention relates to the technical field of rubber compounds, and particularly discloses a bio-based and circulating material synergistically modified EPDM rubber compound and a preparation method thereof. The invention discloses a bio-based and circulating material synergistically modified EPDM rubber compound. The rubber compound is prepared from the following components: 100 parts of bio-based EPDM rubber, 100 to 130 parts of a reinforcing agent, 40 to 60 parts of paraffin oil, 5 to 7 parts of magnesium oxide, 0.5 to 1.5 parts of stearic acid, 6 to 8 parts of BIPB-40 peroxide, 2 to 5 parts of a Si-69 silane coupling agent, 1 to 3 parts of a dispersing agent and 1 to 3 parts of an assistant crosslinking agent, the reinforcing agent is composed of fast extruding furnace black N550, rice hull ash white carbon black and thermal cracking carbon black; and the assistant cross-linking agent is prepared from diallyl terephthalate and triallyl isocyanurate. The rubber compound prepared by utilizing the technical scheme provided by the invention can meet and maintain the mechanical property requirements, and meanwhile, carbon emission of the product in the whole life cycle is reduced from the aspects of formula and process.

The application discloses a kind of ship super-long anticorrosion special nano powder coating, preparation method and application, belong to ship heavy anticorrosion material technical field.The preparation method of the ship super-long anticorrosion special nano powder coating is as follows: epoxy resin, graphene modified epoxy resin, core-shell structure ZnO@SiO2, modified 2,5-dimercapto-1,3,4-thiadiazole, borosilicate glass powder, flaky boron nitride, silane coupling agent modified silica, phenolic amine curing agent, 2-ethyl-4-methylimidazole, fumed silica, defoaming agent, ultraviolet absorber, high-temperature pigment are put into stirrer and stirred for 20-30min, then melt extrusion is carried out through double screw extruder, the extrusion temperature is 90-110 DEG C, grinds and sieves, and the ship super-long anticorrosion special nano powder coating is obtained.The coating prepared by the application has good anticorrosion performance and can be applied in the field of ship metal surface corrosion protection.

Provided is an adhesive composition from which an adhesive layer having excellent heat-resistant durability can be formed. This adhesive composition comprises a (meth)acrylic resin, a crosslinking agent, a silane compound, and an ionic compound, wherein: the (meth)acrylic resin contains, as monomer units, an alkyl (meth)acrylate having a homopolymer glass transition temperature of lower than 0ºC, an alkyl (meth)acrylate having a homopolymer glass transition temperature of at least 0ºC, and a monomer having a polar group; and the ionic compound contains a cyano group-containing anion.

The present application provides a preparation method for a filtrate reducer and the use thereof. The preparation method comprises: dropwise adding a silane coupling agent containing double bonds into a graphite dispersion under an acidic condition for grafting reaction to obtain silane-coupling-agent-modified graphite, then adding a cross-linking agent into the silane-coupling-agent-modified graphite, adjusting the pH to neutrality to obtain a first intermediate solution, mixing acrylamide, a sulfonic monomer, a cationic monomer and a monomer containing a cyclic group, then adjusting the pH to neutrality to form a second intermediate solution, finally adding an initiator into the first intermediate solution, then dropwise adding the second intermediate solution for polymerization reaction to obtain the filtrate reducer. The filtrate reducer prepared by such a method has a better high-temperature-resistant filtrate loss reduction property, and better pressure bearing capacity and plugging capacity.

The invention relates to the technical field of semiconductors, and discloses a preparation method of a heat-conducting polyurethane polishing pad, which comprises the following steps: coupling a silane coupling agent with a hydroxylated inorganic heat-conducting material, and carrying out condensation reaction on silanol groups in the silane coupling agent and hydroxyl groups in the hydroxylated inorganic heat-conducting material to form Si-O-Si covalent bonds; bridging a hydroxylated inorganic heat-conducting material at one end of a silane coupling agent to obtain an intermediate; the intermediate is an inorganic heat-conducting material modified by a silane coupling agent; mixing the polyurethane prepolymer with the intermediate to form a mixed prepolymer, and curing the mixed prepolymer at a first temperature to obtain heat-conducting polyurethane; or curing the polyurethane prepolymer to obtain polyurethane, carrying out melt blending on the polyurethane and the intermediate at a second temperature, and curing at a first temperature to obtain heat-conducting polyurethane, in the heat-conducting polyurethane, polyurethane is bridged at the other end of the silane coupling agent. Compared with the prior art, the heat transfer and heat conduction performance of the polishing pad is effectively improved.

The invention relates to the technical field of coating materials, and discloses a pure titanium micro-arc oxidation coating for a vacuum cup and a preparation method thereof.The preparation method comprises the following steps that surface pretreatment is conducted, specifically, a pure titanium vacuum cup inner container workpiece is sequentially subjected to degreasing, acid pickling and ultrasonic cleaning; preparing an electrolyte, namely adding 15-25 parts by weight of a silicon-containing compound, 5-12 parts by weight of metal salt, 3-8 parts by weight of an antibacterial agent and 1-5 parts by weight of a stabilizer into deionized water, and controlling the pH value to be 8.5-10.5; and performing micro-arc oxidation treatment. According to the invention, a silane compound in the micro-arc oxidation electrolyte contains a high-activity silanol group which is subjected to condensation reaction with titanium hydroxyl on the surface of a pure titanium substrate under the action of an electric field to form stable covalent bonding, so that the bonding strength of the coating and the substrate is enhanced; metal ions generated by metal salt electrolysis are co-deposited with titanium ions through plasma discharge, a composite oxide structure is constructed, and micro defects on the surface of a titanium substrate are sealed.

The invention belongs to the technical field of organic electroluminescent materials, and provides an iridium-containing heterocyclic phosphorescent doping material and an organic electroluminescent device.The doping material has a compound general formula shown in the formula I. Quinoline and a naphthalene ring are connected through silane or germane, and a silicon or germanium six-membered heterocyclic structure is formed. And reacting with iridium metal and a diketone monomer to obtain the iridium metal heterocyclic phosphorescent organic light-emitting material. The heteroatom silicon or germanium in the material can adjust molecular orbital HOMO and LUMO energy levels, and the polarity effect of heteroatoms promotes electron migration, reduces interface potential barriers and electron injection barriers, reduces carrier injection loss and improves carrier mobility, so that driving voltage is reduced, and the external quantum efficiency of a device is improved. In addition, the silicon or germanium heterocyclic ring has better rigidity, so that the overall stability of the structure is enhanced, and the rigid structure can prolong the service life of the device.

The invention relates to the technical field of electrode paste, in particular to electrode paste for a submerged arc furnace and a preparation method of the electrode paste. Comprising three-level grain size distribution anthracite aggregate which is electrically calcined at high temperature and modified by a KH-550 silane coupling agent, a modified silicon carbide whisker and boron-doped graphene-like carbon nitride composite filler, a maleic anhydride-mediated compatible medium-temperature pitch-polyborosiloxane binder and a graphite powder-borax functional additive. A step-by-step mixing and two-stage sintering process is adopted in the preparation process, a covalent bond interface bridging structure is constructed through the coupling agent, the composite dispersing agent regulates and controls the multi-dimensional network distribution of the filler, and the process synergistically improves the compactness and the interface bonding force of the green body. The electrode paste is firm in interface bonding, can form a ceramic protective phase at a high temperature, has excellent conductivity and mechanical strength, and prolongs the service life of the electrode paste for the submerged arc furnace.

The invention relates to the technical field of anti-drag films, and particularly discloses an ultraviolet aging resistant anti-drag film and a preparation process thereof.A hindered amine light stabilizer HALs and a silane coupling agent KH-560 are introduced into substrate TPU resin, the strength, heat resistance and aging resistance of the material are enhanced, then an adhesive layer is formed on a substrate film, and the anti-drag film is prepared. A disulfide bond in the adhesive layer has a reversible fracture-self-repairing function, the fatigue resistance of the material is enhanced, the long-term service life of the material is prolonged, the surface layer is acrylic resin formed through copolymerization, the structure comprises a flexible alkyl chain and a siloxane chain segment, a microstructure is formed through hot rolling, the aerodynamic performance is optimized, and the purpose of reducing frictional resistance is achieved.

The invention discloses a method for improving the performance of recycled aggregate concrete, and belongs to the technical field of building materials. The preparation method comprises the following steps: preparing a modified solution which is compounded by double components of gamma-methacryloxy propyl trimethoxy silane and vinyl triethoxy silane; carrying out surface modification on the recycled aggregate by adopting a graded pre-wetting-spraying composite modification method; preparing a slag powder-fly ash-nano silicon dioxide ternary composite admixture; preparing a concrete mixture according to the mixing ratio; through surface modification of the silane coupling agent and cooperation of the composite admixture, the problems of poor workability and low strength of the concrete caused by high water absorption of the recycled aggregate are effectively solved, the 28d compressive strength of the prepared concrete is improved by 20-30%, the anti-freezing grade reaches F200, and the shrinkage rate is reduced by 15-25%.

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a hydrogen storage material, a preparation method thereof and a hydrogen storage system. The hydrogen storage material comprises the following raw material components in percentage by mass: 90%-97.5% of hydrogen storage alloy powder, 1%-5% of a volume expansion buffering agent, 1%-5% of a heat conduction material and 0.5%-3% of an additive, the additive comprises at least one of a silane coupling agent and polyimide; the preparation method comprises the following steps: mixing the raw material components, carrying out cold press molding, carrying out heat treatment for 4-12 hours in an inert atmosphere at the temperature of 110-150 DEG C, and cooling to obtain the hydrogen storage material.

The invention discloses a high-temperature-resistant sealing agent and a preparation method thereof, and relates to the technical field of chemical assistants, and the high-temperature-resistant sealing agent is characterized by comprising the following components in parts by weight: 25-32 parts of acidic nano silica sol, 56-65 parts of a cosolvent, 8-12 parts of a hydrolysis inhibitor, 9-12 parts of a silane coupling agent A, 5.5-6.8 parts of a silane coupling agent B and 0.01-0.015 part of a wetting agent. The high-temperature-resistant sealing agent has the effects that the high-temperature-resistant sealing agent is not yellowed, decomposed and dropped after being baked for 2 hours in an oven at the temperature of 250 DEG C, and is not corroded after being corroded by salt mist for 1000 hours.

Disclosed are a two-component low-density PU structural adhesive, a preparation method therefor and an application thereof. The two-component low-density PU structural adhesive is composed of Component A and Component B, where a volume ratio of Component A to Component B is 1:0.8-1.2, Component A includes polyether carbonate polyol, castor oil or / and modified castor oil, bisphenol A polyether polyol, a chain extender, hollow glass beads, molecular sieve, fumed silica, a silane coupling agent and catalysts, specifically, the polyether carbonate polyol and the castor oil or / and the modified castor oil cannot be zero at the same time; and Component B includes isocyanate prepolymer, polyisocyanate, hollow glass beads, fumed silica, and a dehydrating agent, the present disclosure solves the problems of poor storage stability, low bonding strength and low elongation at break of the low-density structural adhesive in the prior art.

The invention provides modified zirconium silicate whisker reinforced aluminum oxide ceramic as well as a preparation method and application thereof, and belongs to the technical field of new materials. The preparation method comprises the following steps: modifying the surface of alumina powder with a silane coupling agent with sulfydryl to generate zirconium silicate in situ, uniformly mixing the zirconium silicate with zirconium silicate whiskers which are treated by hydrogen peroxide and modified by phytic acid and tannic acid and a CeO2-Y2O3-MgO-SiO2 compound, and performing spark plasma sintering to obtain the modified zirconium silicate whisker reinforced alumina ceramic. The modified zirconium silicate whisker reinforced aluminum oxide ceramic prepared by the invention has better interface bonding force, excellent mechanical properties and good wear resistance, realizes ceramic densification, and has wide application prospects.

The invention discloses an anti-yellowing PVB (Polyvinyl Butyral) adhesive for laminated glass and a preparation method thereof, and relates to the technical field of adhesives. The yellowing-resistant PVB glue for the laminated glass has the advantages that the yellowing resistance is high; the modified PVB / nano silicon dioxide composite material is prepared from the following raw materials in parts by weight: 55 to 65 parts of modified PVB resin, 4 to 6 parts of modified nano silicon dioxide, 15 to 20 parts of dioctyl adipate, 0.5 to 1 part of a compound antioxidant, 0.3 to 0.8 part of an ultraviolet absorbent UV-327, 0.2 to 0.5 part of a silane coupling agent KH-560, 0.3 to 0.6 part of ethylene bis stearamide, 0.1 to 0.3 part of 2-benzimidazole methyl carbamate, 3 to 5 parts of tris (1-chloro-2-propyl) phosphate and 0.1 to 0.3 part of nano titanium dioxide. 5 to 8 parts of isopropanol; 0.8 to 1.2 parts of polycarbodiimide. The special modified PVB resin and the nano silicon dioxide are matched with the auxiliary agents such as the compound antioxidant, the anti-yellowing performance of the PVB glue for the laminated glass is remarkably improved through precise process preparation, the components have a synergistic effect, the process is controllable, the product performance is stable, and the cohesiveness is good.

The invention belongs to the technical field of protective coatings, and particularly relates to a modified polysilazane-based protective coating, a preparation method thereof, a protective coating and application thereof. The modified polysilazane-based protective coating provided by the invention is prepared from the following preparation raw materials in parts by mass: 5.0 to 15.0 parts of polysilazane, 1.0 to 5.0 parts of a low-surface-energy compound, 1.0 to 5.0 parts of a hydrophilic compound, 1.0 to 5.0 parts of a silane coupling agent, 0.01 to 0.1 part of an initiator and 60.0 to 80.0 parts of a dispersion medium, both the low-surface-energy compound and the hydrophilic compound contain groups for free radical polymerization reaction. A protective coating formed by the protective paint provided by the invention has good environmental adaptability, and can simultaneously realize multiple effects of friction resistance, corrosion resistance, adhesion resistance, biological fouling resistance and the like when used under harsh working conditions (air / underwater environment).

The invention discloses a preparation method of a solid-state electrolyte based on chemical bonding of a silane coupling agent and a sulfide solid-state electrolyte and a preparation method of a solid-state lithium battery. A halogen ion competitive adsorption effect of a first electrolyte is cooperated with a compact siloxane network formed by the silane coupling agent; the sulfide solid electrolyte is effectively inhibited from reacting with moisture in air, electrochemical performance attenuation is delayed, the first electrolyte reacts with lithium metal to generate a stable SEI layer to inhibit dendritic crystal growth, and a wide electrochemical stable window of the second electrolyte can reduce oxygenolysis reaction with a high-voltage positive electrode, so that the electrochemical performance is improved. Chemical bonding is formed between amino groups of the silane coupling agent and lithium metal, interface contact is optimized, meanwhile, the interface ion transfer efficiency is improved through the high ionic conductivity of the second electrolyte, and the interface impedance is reduced; the defects of poor ionic conductivity and poor service life caused by poor air stability and electrochemical stability of the electrolyte in the prior art are overcome.

The invention discloses a UV-cured high-weather-resistance optical thin film and a preparation method thereof, and relates to the technical field of optical thin films. The optical film is prepared by taking polyethylene glycol terephthalate as a base material and coating the base material with a UV curing coating, and the UV curing coating comprises the following raw materials in parts by weight: 15-20 parts of aliphatic polyurethane acrylate, 5-8 parts of perfluorobutyl ethyl acrylate, 8-12 parts of hydroxyethyl acrylate, 6-10 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 2, 4-trimethyl-1, the invention relates to a UV (ultraviolet)-resistant coating which is prepared from the following raw materials in parts by weight: 1-2 parts of 2, 6-hexanediol diacrylate, 5-8 parts of trimethylolpropane triacrylate, 30-40 parts of modified epoxy acrylate, 1-2 parts of a silane coupling agent KH-570, 2-3 parts of a photoinitiator 1173, 0.5-1.2 parts of a modified ultraviolet absorbent UV-327, 0.8-1.5 parts of a hindered amine light stabilizer 540, 0.3-0.8 part of an antioxidant 1010, 0.09-0.12 part of an ultraviolet absorbent Tinuvin400 and 0.2-0.5 part of polyether modified polydimethylsiloxane. According to the UV-cured high-weather-resistance optical thin film, polyethylene glycol terephthalate is used as a base material, key raw materials such as a UV-cured coating with a scientific formula, modified epoxy acrylate and the like are finely prepared, a two-stage curing process is adopted, and the weather resistance is excellent.

The invention relates to the technical field of shield tunnel construction, and discloses a shield tunnel segment joint waterproof material and a waterproof structure, the shield tunnel segment joint waterproof material comprises a component A and a component B; the component A comprises the following component: 30-40 parts of liquid polysulfide rubber; 5 to 10 parts of a fluorinated polyurethane prepolymer; 1-5 parts of a silane coupling agent; 3-5 parts of fumed silica; 8-15 parts of hollow glass beads; 10 to 15 parts of nano calcium carbonate; 0.5 to 2 parts of polytetrafluoroethylene micro powder; 0.1 to 1 part of ettringite; the component B comprises the following component: 1-5 parts of manganese dioxide; and 5 to 10 parts of dioctyl phthalate. By utilizing the characteristics that the sealing gasket has excellent fluidity during injection and can be automatically cured into a high elastomer within a set time, a pre-installed sealing gasket can be replaced by adopting an innovative injection process, and the construction difficulty faced by high-precision shield segment assembly in a high-water-pressure environment is effectively solved.

A glass powder surface gradient activation-asphalt interface bonding enhancement technology is created for the first time, and the industry bottleneck that the compatibility of waste glass and asphalt is poor is broken through. The core of the method comprises the following steps: 1, an original pretreatment process: carrying out three-stage crushing, wet magnetic separation (the magnetic field intensity is 1.2 T), plasma etching (the ratio of Ar to O2 is 4: 1, and the power is 800W) and controllable ball milling (zirconium oxide balls are used for ball milling) on waste glass; according to interface molecular engineering, a bifunctional silane coupling agent (KH-792: gamma-aminoethyl aminopropyl trimethoxy silane) and titanate (NDZ-201) are compounded with a modifying agent (the mass ratio is 3: 1), and a-Si-O-Ti-cross-linked network 3 is constructed on the surface of the glass powder through in-situ hydrolytic condensation. According to mixture collaborative design, mineral powder is replaced by 35-55% of activated glass powder, and the particle size ratio of the activated glass powder to the mineral powder is 1: 2, D90 is smaller than or equal to 20 [mu] m < 2 >, D90 is smaller than or equal to 20 [mu] m < 2 >, and D90 is smaller than or equal to 20 [mu] m < 2 >. The technical effect of forming a core-shell structure reinforced phase in the SBS modified asphalt is as follows: the dynamic stability reaches 5032 + / -210 times / mm (JTGE20-2011T0719), and compared with the traditional mixture, the water sensitivity (TSR) is improved by 79.7% from 81.3% to 96.5%.