200 results about "Silanization" patented technology

The invention relates to the technical field of oil-displacing agents, and particularly discloses a targeted nano oil-displacing agent and a preparation method thereof. A preparation method of a targeted nano oil displacement agent comprises the following steps: S1, dispersing 10-30 parts by mass of silanized inorganic nanoparticles in an alcoholic solution, adding 5-12 parts by mass of a functional monomer, 8-20 parts by mass of a hydrophilic monomer and 5-15 parts by mass of a hydrophobic monomer in an inert atmosphere, uniformly mixing, heating to 75-85 DEG C, adding an initiator, carrying out a constant temperature reaction for 4-6 h, and cooling to obtain a pre-grafted nanoparticle dispersion liquid; s2, mixing the pre-grafted nanoparticle dispersion liquid with a composite surfactant, adjusting the pH value to 6.5-7.5, and mixing at 30-40 DEG C for 22-26 hours to obtain the targeted nano oil displacement agent, the targeting type nano oil displacement agent prepared by the invention can still keep excellent dispersion stability and ultralow interfacial tension under the condition of a high-salt oil reservoir, so that the oil displacement efficiency is remarkably improved.

The invention discloses a wide-temperature energy storage aerogel / polymer composite material and a preparation method thereof.The preparation method comprises the steps that oxide aerogel with a three-dimensional skeleton structure is subjected to silanization treatment to obtain hydrophobic oxide aerogel, then the hydrophobic oxide aerogel is dispersed into a solvent to obtain dispersion liquid, and then the dispersion liquid is subjected to ultrasonic treatment to obtain the wide-temperature energy storage aerogel / polymer composite material. The preparation method comprises the following steps: sequentially adding a diamine monomer and an anhydride monomer into a dispersion liquid, reacting under stirring to obtain a polyamide acid precursor solution dispersed with hydrophobic oxide aerogel, carrying out film casting on the polyamide acid precursor solution to obtain a dry film, and carrying out imidization treatment on the dry film to obtain the aerogel / polymer composite material. The obtained aerogel / polymer composite material can still maintain high energy storage performance and stability even at extreme ambient temperature.

The invention belongs to the technical field of vehicle protection materials, and particularly relates to a coating for an explosion-proof vehicle. The coating is composed of an adhesion bottom layer, an energy-absorbing middle layer and an anti-impact outer layer, wherein the adhesion bottom layer contains epoxy resin and flaky zinc powder / mica powder, and a laminated shielding structure is formed to improve the adhesion force to be larger than or equal to 8 MPa; the energy-absorbing middle layer is a composite material of modified nano silicon dioxide / polyethylene glycol-based STF and silanized aramid fiber, the viscosity of the energy-absorbing middle layer is sharply increased by more than 50 times at the strain rate of 500s <-1 >, and 65% of explosion impact energy can be absorbed; the anti-impact outer layer adopts a polyurea elastomer to wrap gradient distribution silicon carbide microspheres, pyramid-shaped protrusions are designed on the surface, the fragment defense speed reaches 430 m / s, and the shock wave reflection dispersion is increased by 50%. The whole anti-explosion coating passes UL94V-0 certification through a synergistic flame-retardant system, the chemical protection and self-cleaning capacity is improved through a super-hydrophobic surface layer, and the problems that a traditional anti-explosion coating is poor in adhesive force, weak in composite threat resistance and insufficient in environmental adaptability are solved.

The invention relates to the technical field of optical films, and discloses a PET-based composite optical film and a preparation method thereof.The optical film is prepared from 100 parts of PET master batch, 5-10 parts of anti-blue-light nanofiller and 1-3 parts of interfacial compatibilizer through melt extrusion, asynchronous two-way stretching, online anti-fingerprint coating liquid coating and cooling and rolling; the blue-light-resistant nano filler is a core-shell structure filler prepared by taking KH570 silanized nano cerium oxide as a core, polymerizing by grafting glycidyl methacrylate to form a shell layer, and then reacting with 1H-benzotriazole-1-methanol. The anti-fingerprint coating liquid is prepared from perfluoropolyether modified siloxane acrylate and nano silicon dioxide sol. Through core-shell filler design and functional coating online coating, the technical problems that inorganic nanoparticles are easy to agglomerate and organic small molecule auxiliary agents are easy to migrate are synergistically solved, and the obtained optical film has excellent properties of high light transmittance, low haze, efficient blue light resistance and lasting fingerprint resistance and is good in durability.

The invention relates to a heat-conducting insulating cable material and a preparation method thereof, and belongs to the technical field of cable materials, the heat-conducting insulating cable material comprises the following raw materials: 50-60 parts of polypropylene, 25-30 parts of SEBS, 12-18 parts of a modified heat-conducting insulating material, 2-4 parts of a plasticizer, 6-8 parts of an antioxidant, 3-4 parts of a lubricant and 7-10 parts of a reinforcing filler; according to the technical scheme, modified hydroxylated boron nitride is combined with organic intercalated montmorillonite, then a silane coupling agent is grafted, and a silanization reinforced material is obtained; combining the silanization reinforcing material with a branched functional monomer to obtain an amino-terminated hyperbranched composite material; combining the amino-terminated hyperbranched composite material with an interface modifier to obtain a modified heat-conducting insulating material; mixing polypropylene, SEBS, the modified heat-conducting insulating material, a plasticizer, an antioxidant, a lubricant and a reinforcing filler, and performing extrusion granulation to obtain the heat-conducting insulating cable material. The mechanical property, the heat-conducting property and the insulating property of the cable material are improved.

The invention discloses a weather-resistant heat-insulation waterproof coating for an outer wall and a preparation method of the weather-resistant heat-insulation waterproof coating. The waterproof coating comprises the following components in parts by weight: 27-35 parts of modified acrylate polymer emulsion, 35-50 parts of composite filler, 5-10 parts of a curing system, 4-8 parts of a coalescing agent, 0.1-0.5 part of a defoaming agent, 0.3-0.8 part of a flatting agent, 0.2-0.6 part of a mildew preventive, 0.5-1.0 part of a thickening agent and 1-5 parts of a pH regulator, the modified acrylate polymer emulsion is prepared by carrying out pretreatment and silanization modification on cardanol and then carrying out monomer pre-emulsification and free radical polymerization. According to the waterproof coating provided by the invention, a Si-O-C network and a hindered amine free radical capture system are introduced, so that the weather resistance is improved; fluoride-nano silicon dioxide is used for constructing a roughness-low surface energy synergistic waterproof interface; acid-washed fly ash floating beads, silicon dioxide aerogel and expanded perlite filler are compounded to form multiple heat conduction scattering paths so as to realize cross-scale porous filler heat preservation; the waterproof coating can serve in complex environments with large temperature difference fluctuation, acid rain and the like.

The invention discloses a preparation method of a high-strength corrosion-resistant PVDF-based composite material, and belongs to the technical field of composite materials. The method mainly comprises the following steps: (1) preparing surface nanocrystallization carbon fibers with SiO2 nano layers on the surfaces through alkali liquor activation, silanization and in-situ growth processes; (2) preparing fluorine-containing modified graphene oxide; (3) mixing the filler with PVDF resin, introducing a VDF monomer for in-situ polymerization, and constructing a chemical bonding interface; (4) respectively preparing outer layer slurry rich in nano TiO2, middle layer slurry rich in surface nanocrystallization carbon fibers and inner layer slurry rich in SiO2 coated Al2O3 core-shell nanoparticles by quantitatively supplementing specific filler; and (5) carrying out gradient tape casting, segmented drying, hot press molding and annealing treatment to prepare the composite material. The problems that a traditional PVDF material is weak in interface bonding and corrosion resistance and strength are difficult to consider at the same time are solved, and the prepared material has excellent mechanical strength and strong acid corrosion resistance.

The invention belongs to the technical field of anti-corrosion pipelines, and particularly relates to an outer 3PE inner epoxy resin anti-corrosion pipeline and a production process thereof. Medium-frequency preheating; performing internal and external shot blasting to remove rust; carrying out silanization nanoparticle suspension liquid treatment; internal corrosion prevention; epoxy powder coating is sprayed on the outer surface of the steel pipe through an electrostatic spraying technology to form an anti-corrosion bottom layer, and the outer surface of the steel pipe is coated with adhesive and polyethylene to form an adhesive layer and a polyethylene layer. According to the invention, bisphenol A epoxy resin with low molecular weight is selected, and the molten epoxy powder coating has relatively low viscosity and can be fully infiltrated into the bottom of an anchor pattern on the surface of the steel pipe, so that the leveling effect is improved, the leveling time is shortened, and the epoxy resin coating is more uniform; meanwhile, under the promotion of an imidazole group, acid anhydride and bisphenol A epoxy resin are quickly crosslinked and cured to form gel, so that the viscosity of the epoxy powder coating is quickly increased, and sagging is prevented.

The invention discloses a functionalized hybrid flame retardant based on cyclodextrin-MOF (Metal Organic Framework) as well as a preparation method and application thereof, and belongs to the technical field of high polymer material science and flame retardance. The hybrid flame retardant (F-CD-MOF) has a core-shell structure, a core body is crystalline CD-MOF formed by self-assembly of cyclodextrin and potassium ions, and a shell layer is an organic interface layer which is formed by grafting of a silane coupling agent and contains an active functional group (-NH2 or-NCO). The preparation method comprises the steps of CD-MOF primary crystal synthesis, surface silanization functionalization and post-treatment. The flame retardant can be used as a reactive nanofiller for preparing a high-performance flame-retardant polyurea coating, a polyurea three-dimensional cross-linked network is embedded through covalent bonding, the UL-94 flame-retardant grade of the obtained coating reaches V-0 grade, the peak heat release rate is reduced by 40% or above compared with that of a pure polyurea coating, and the flame retardant has excellent mechanical properties and is suitable for industrial production. The fireproof coating is suitable for high-end fireproof fields such as building fireproof coatings and electric power facility fireproof coating materials.

The invention discloses an anti-cracking calcium silicate board and a preparation method thereof, and relates to the technical field of light building materials. The method comprises the following steps: carrying out ball milling, acid pickling and silane coupling agent surface modification on quartz sand to obtain alkylated quartz sand; and carrying out dry mixing on the mixture, metakaolin, silica fume and cement. The linen fiber is subjected to alkali treatment and hydroxyethyl acrylate graft modification, and the PVA fiber is subjected to silane coupling agent and nano silicon dioxide coating treatment. Dispersing graphene oxide, carboxylated styrene-butadiene emulsion and other assistants in water, adding the dry mixture, uniformly stirring, and then adding the two modified fibers to prepare mixed slurry; and finally, carrying out pressure forming, pre-curing, high-pressure steam curing and drying to obtain a finished product. Through substrate silanization, fiber grafting / nanocrystalline seed modification and synergistic introduction of graphene oxide and elastic emulsion, the interface bonding strength and toughness are remarkably enhanced, crack initiation and propagation are effectively inhibited, and the plate has excellent cracking resistance.

The invention relates to the technical field of advanced thermal interface materials, in particular to a high-thermal-conductivity boron nitride insulating heat-conducting gasket and a preparation method and application thereof. The heat-conducting gasket is prepared from the following raw materials in parts by weight: 1000 parts of organic silica gel, 50 to 500 parts of modified boron nitride, 50 to 200 parts of diluent and 150 to 1500 parts of auxiliary heat-conducting filler, according to the heat-conducting gasket, the sheet-shaped boron nitride is oriented in a plane parallel to the horizontal plane through a rolling-hot pressing synergistic orientation technology. Vacuum plasma treatment, in-situ silanization modification and ultrasonic dispersion are integrated, and continuous and automatic production of BN surface treatment is achieved. Meanwhile, by optimizing a rolling-hot pressing synergistic process, directional arrangement and tight stacking of the BN sheet layers are promoted, an efficient three-dimensional heat conduction network is formed, and the heat conduction performance of the composite gasket is remarkably improved.

A substrate processing method according to the present invention incudes: a preparation step of preparing a substrate in which at least a first surface containing silicon oxide and a second surface containing silicon or a silicon compound other than silicon oxide are exposed; a surface modification step of forming an etching selectivity imparting film on at least a part of the first surface and at least a part of the second surface by a silylation treatment of bringing a silylating agent into contact with the first surface and the second surface; and an etching step of selectively carrying out an etching treatment on the second surface with respect to the first surface using an etching agent after the surface modification step.

The application discloses a waterproof coating for outer wall weather resistance, heat insulation and heat preservation and a preparation method thereof. The waterproof coating comprises the following components in parts by weight: modified acrylate polymer emulsion 27-35 parts, composite filler 35-50 parts, curing system 5-10 parts, film forming aid 4-8 parts, defoaming agent 0.1-0.5 parts, leveling agent 0.3-0.8 parts, mildew-proof agent 0.2-0.6 parts, thickening agent 0.5-1.0 parts and pH regulator 1-5 parts. The modified acrylate polymer emulsion is prepared by pretreating and silanization modifying cardanol, monomer pre-emulsification and free radical polymerization. The waterproof coating provided by the application introduces Si-O-C network and hindered amine free radical capture system to improve weather resistance; fluorine compound-nano silicon dioxide constructs roughness-low surface energy synergistic waterproof interface; acid washing fly ash floating beads, silica aerogel and expanded perlite filler are compounded to form multiple heat conduction scattering paths to realize cross-scale porous filler heat preservation; and the waterproof coating can serve in complex environments such as large temperature difference fluctuation and acid rain.

The application belongs to the field of super-amphiphobic materials, and discloses a super-amphiphobic coated metal composite material based on a three-layer structure, which comprises, from bottom to top, a silanized metal substrate, an intermediate layer and a super-amphiphobic coating layer; the intermediate layer is formed by immersing and drying an emulsion of microcapsules dissolved in an organic polymer matrix solution, and the microcapsules are formed by wrapping photosensitizers and first SiO2 super-amphiphobic particles with a polymer matrix; the super-amphiphobic coating layer contains second SiO2 super-amphiphobic particles; the first SiO2 super-amphiphobic particles and the second SiO2 super-amphiphobic particles are nano-SiO2 modified by silane coupling agents and then modified by perfluoroalkyl silane. By introducing nano-SiO2 with low surface energy functional groups into the intermediate layer and the super-amphiphobic coating layer, and by designing the intermediate layer to be formed by drying microcapsules containing SiO2 super-amphiphobic particles dissolved in an organic polymer matrix solution, the surface of the composite material and the composite material after surface damage can still maintain the effects of being hydrophobic and oleophobic.

The application discloses a giant electro-rheological fluid capsule, a preparation method thereof and application of the giant electro-rheological fluid capsule in a rigid-flexible matrix digital controllable intelligent material, and belongs to the technical field of novel intelligent materials. The giant electro-rheological fluid capsule comprises: an inner core composed of a giant electro-rheological fluid; an organic shell layer wrapping the inner core; and a surface modification layer located outside the organic shell layer; wherein the surface modification layer is a siloxane layer formed through a silanization reaction and capped by a low-surface-energy substance. The application also provides a preparation method thereof. Compared with the prior art, the application reduces the surface energy of the shell layer, improves the wettability and compatibility with non-polar external phases such as silicone oil, inhibits secondary coagulation and electrostatic agglomeration, reduces dielectric loss, and obtains more stable long-term rheological properties while guaranteeing response speed and yield stress.

Silicone pressure sensitive adhesives prepared by curing a hydrosilylation reaction curable composition are disclosed. The silicone pressure sensitive adhesives are useful in preparing components of flexible displays.

The invention discloses a gradient degradation type personalized absorbable sternum fracture fixing plate and a preparation process, and belongs to the technical field of medical implant materials. Comprising an anatomical adaptive plate body and an integrated locking assembly, the plate body is of a partitioned structure of a middle supporting area and an edge buffering area, a gradient pore array penetrating through the thickness direction is formed in the surface of the plate body, and a hydroxyapatite-collagen composite coating is loaded on the inner wall of a pore; the plate body is made of a composite absorbable material through 3D printing forming and hot pressing post-treatment, and the composite absorbable material comprises, by weight, 60%-70% of polylactic acid-glycolic acid copolymer (PLGA, LA / GA = 75 / 25), 15%-20% of silanized magnesium alloy microwires, 5%-10% of hydroxyapatite nano-particles and 5%-10% of polycaprolactone (PCL). Space-time matching of the degradation rate and the bone healing process is achieved through the partition gradient structure, the magnesium alloy microwires enhance the mechanical property and release active ions to promote osteogenesis, and the method has the advantages of personalized adaptation, gradient degradation, bone regeneration promotion and the like.

The present application belongs to the technical field of self-repairing coating, and relates to a preparation method of a green photo-thermal super-hydrophobic self-repairing coating. The preparation method specifically comprises the following steps: step 1, polydopamine coating carbon black; step 2, carbon black silane modification; step 3, hybrid wall microcapsule preparation; step 4, silanized carbon black branch connection microcapsule; and step 5, mixed spraying. The present application synthesizes non-fluorinated low-surface-energy particles, adopts non-fluorinated super-hydrophobic carbon black branch connection modification microcapsule to prepare a photo-thermal super-hydrophobic self-repairing coating, the use of the non-fluorinated coating reduces cost and protects the environment; and the nano-composite coating is composed of nano-particle fillers and an organic polymer resin coating. In the coating, the branch connection carbon black endows the coating with excellent photo-thermal conversion capability to realize the deicing function, at the same time, the rupture of the microcapsule realizes the release of the dehydrated castor oil core material, and realizes the self-repairing of the damaged area of the coating, and the hydrophobic modification layer of the carbon black and the hybrid structure of the microcapsule together guarantee the super-hydrophobicity and durability of the coating.

The invention relates to the technical field of petroleum drill rods, in particular to a drill rod joint gradient coating and a preparation method and a coating method thereof. The gradient coating of the drill rod joint comprises a bottom layer, a middle layer and a surface layer, the bottom layer, the middle layer and the surface layer are sequentially stacked on the surface of a drill rod connector base body which is subjected to plasma electrolytic polishing-micro-arc oxidation composite pretreatment and silanization bridging. According to the invention, the whole process optimization of anchor pattern pretreatment-coating coating-curing molding of the drill rod thread is realized, through unique composition design and a spraying process, the comprehensive properties of lubrication, wear resistance and rust prevention of the coating are improved, continuous protection and performance recovery of the thread surface under dynamic load are realized, and the service life of the thread is prolonged. The service life of the drill rod is effectively prolonged, the maintenance cost is reduced, the problem that shackling cannot be conducted in the using process can be effectively solved, and heavy metal pollutants cannot be generated in the technological process.

The invention discloses a display screen splicing bonding material as well as a preparation method and a splicing method thereof, and belongs to the technical field of display screens. The binding material comprises the following components in percentage by mass: a composite elastomer matrix and a reactive compatibilizer, the composite elastomer matrix is a compound of a hydrogenated styrene-butadiene-styrene block copolymer and a dynamically vulcanized thermoplastic elastomer; the reactive compatibilizer is a maleic anhydride grafted ethylene-octylene copolymer; the preparation method comprises the steps of high-speed premixing, high-shear dispersion, banburying addition and gradient heat treatment. During application, the substrate is subjected to plasma and silanization pretreatment, then the material is subjected to seam filling, and rapid and efficient curing is realized by adopting a light-heat dual-curing process; the material has the advantages of high bonding strength, high thermal conductivity, excellent weather resistance and creep resistance, solves the problems of visible gaps, thermal stress cracking, insufficient aging resistance and the like at the splicing part of the display screen, and is particularly suitable for manufacturing high-end ultra-high-definition large-size spliced display screens.

The invention belongs to the technical field of separation and extraction of natural products, and particularly relates to a process for extracting astaxanthin by using a deep eutectic solvent, which comprises the following steps: extracting an astaxanthin raw material and the deep eutectic solvent in an ultrasonic-pulsed electric field synergistic device according to a mass-volume ratio of 1: 15-1: 25 g / mL, and then purifying by using a modified macroporous resin column to obtain the astaxanthin. And finally, carrying out film concentration and spray drying to obtain an astaxanthin product. The deep eutectic solvent is prepared from the following components in parts by mass: 15-25 parts of a hydrogen bond acceptor, 35-55 parts of a hydrogen bond donor and 1-3 parts of a functionalized nano material, the functionalized nano material is silanization modified mesoporous silica. According to the method disclosed by the invention, efficient extraction, high product stability, low solvent residue and good environmental compatibility of astaxanthin are synchronously realized through a synergistic effect of a plurality of technical characteristics of functionalized nano material, ultrasonic-pulsed electric field synergistic extraction, modified macroporous resin purification, protective agent application and the like.

The invention provides composite cementing material building floor sound insulation mortar and a preparation method thereof, and belongs to the technical field of novel building materials. Aiming at strong-alkalinity, high-humidity and intermittent impact coupling special environments such as hospitals and the like, a geopolymer precursor composed of metakaolin and blast furnace slag micro powder and an alkaline activator are introduced and interwoven with a cement hydration product to form an alkali-corrosion-resistant composite gel matrix; meanwhile, the composite corrosion inhibitor with the pH response release characteristic is adopted, and corrosion inhibition components are released during strong alkaline invasion to form a composite protective film; and regenerated elastic particles subjected to surface silanization treatment are selected as a damping filler. Under the synergistic effect of the three components, the mutually aggravated failure cycle of chemical erosion and mechanical impact is interrupted, so that the long-term sound insulation stability, mechanical durability and corrosion resistance of the sound insulation mortar in a severe environment are remarkably improved.

The invention discloses a preparation method and application of a modified quartz sand adsorption material, and relates to the technical field of quartz sand adsorption materials.The preparation method comprises the following working steps that S1, alkali activation treatment is conducted; step S2, silanization modification; step S3, potassium persulfate activation; quartz sand is subjected to surface modification through three-step modification treatment, wherein a sodium hydroxide solution is adopted to activate the surface of the quartz sand, and hydroxyl groups are introduced; then, gamma-aminopropyltriethoxysilane (KH550) is used for carrying out silanization modification, and an amino functional group is grafted; finally, after amino is activated through potassium persulfate (K2S2O8), 2-acrylamido-2-methylpropanesulfonic acid (AMPS) is grafted, a sulfonic functional group is introduced, and a new group is introduced to modify the quartz sand, so that the adsorption capacity of the quartz sand as a seed crystal to calcium fluoride in a crystallization-induced coupled fluidized bed system is improved, and the effluent turbidity in the fluidized bed system is reduced. Compared with other seed crystals, the calcium fluoride adsorption capacity is higher, and the effluent turbidity is lower.

The invention discloses a high-temperature-resistant coating for towers and a preparation method of the high-temperature-resistant coating, and belongs to the technical field of coatings. Flame-retardant silane monomers containing pyrimidyl and nitrile group structures are introduced and condensed and hydrolyzed to form modified organic silicon resin, and the high-temperature-resistant coating for the towers is prepared by utilizing the high thermal stability of pyrimidine rings and the charring tendency of nitrile groups in the heating process. According to the present invention, by introducing the silane, the resin matrix can form the stable heat-resistant skeleton so as to significantly improve the structure retention ability and the thermal oxidation resistance of the coating at the high temperature, and by introducing the silanized fluorine-containing phosphate, the nano-silica and the nano-alumina composite filler, the inorganic phase can construct the compact barrier network in the coating so as to improve the thermal oxidation resistance of the coating; the heat resistance, flame retardance and corrosion resistance are further enhanced, the prepared coating shows excellent adhesive force, barrier property and long-term high-temperature stability in a high-temperature, humid and corrosive medium environment, the service life of a high-temperature tower in a complex environment can be effectively prolonged, and the coating has a good engineering application prospect.

The application discloses a preparation method of graphene-coated conductive glass fiber mesh cloth, which is composed of the following specific steps: (1) glass fiber mesh cloth is soaked in a silane coupling agent aqueous solution to perform surface silanization modification on the surface of the glass fiber, and then repeated drying and water washing are performed to obtain silane coupling agent modified glass fiber mesh cloth; (2) a proper amount of graphene powder is added into a polyethylene imine aqueous solution, and then dispersion treatment is performed to obtain a graphene dispersion liquid; and (3) the silane coupling agent modified glass fiber mesh cloth obtained in the step (1) is soaked in the graphene dispersion liquid obtained in the step (2), and finally drying is performed to obtain the graphene-coated conductive glass fiber mesh cloth. The prepared conductive glass fiber mesh cloth not only has adjustable conductivity, but also can widen the application of the glass fiber mesh cloth and a composite material thereof; and the whole preparation process is simple and efficient, low in cost and easy to realize large-scale production.

The invention discloses a detection method for rapidly monitoring the silane coupling degree of a white carbon black sizing material in production, and belongs to the field of white carbon black sizing material detection. Applying continuous sine strain to the heated and flocculated master batch, continuously testing the modulus of the heated and flocculated master batch under different shear forces, setting the modulus as a first test, taking the logarithm of a test numerical value, and drawing a modulus curve of the first test; after continuous torsion, testing the modulus of the heated and flocculated masterbatch under different shear forces, setting the modulus as a second test, taking the logarithm of the test value, and drawing a modulus curve of the second test; and calculating according to the modulus curve of the first test and the modulus curve of the second test to obtain the silanization degree of the masterbatch. According to the method, the dispersion condition of the white carbon black in the rubber material and the reaction degree of the silane coupling agent can be rapidly, accurately and quantitatively analyzed, and the problem that the quantitative analysis of the mixing degree of the white carbon black filler is difficult is solved.

The invention discloses a flexible triboelectric sensor based on a modified conductive fabric and a preparation method thereof, and the flexible triboelectric sensor comprises a flexible packaging layer which is located at the bottommost part of the sensor; the modified conductive fabric electrode layer is arranged on the upper surface of the flexible packaging layer and comprises a fabric substrate with amino functional groups on the surface and a conductive network anchored on the fabric substrate through amido bonds, and the conductive network is composed of carboxylated multi-walled carbon nanotubes and carbon black; and the high-dielectric composite sensitive layer covers the upper surface of the modified conductive fabric electrode layer and is composed of an elastomer matrix doped with high-dielectric-constant ceramic particles subjected to surface silanization treatment and graphene. According to the flexible triboelectric sensor and the preparation method thereof, a stable conductive network is constructed through chemical bonding, the dielectric property is improved through filler surface modification and micro-nano structure design, and the obtained sensor has high stability, high output power and wide material adaptability.

The siloxane-based corrosion resistant adhesive is prepared from a reaction mixture such that after curing in the form of a layer, the formed siloxane-based adhesive has a stable modulus and a shear storage modulus at a frequency of 1 Hz of no more than 0.2 MPa as measured by DMA (Dynamic Mechanical Analysis). In addition, the cured siloxane-based adhesive layer is optically transparent, and after lamination to a silver nanowire film, the silver nanowire film has a change in resistance of less than 10% after aging for 500 hours at a relative humidity of 65 DEG C / 90%. The reaction mixture forming the siloxane-based adhesive includes at least one vinyl-functionalized siloxane, at least one hydrogen-functionalized siloxane, at least one hydrosilylation catalyst, at least one siloxane tackifying resin, and at least one anticorrosive agent.

The invention discloses a preparation method of a carbon-coated lithium titanate composite silicon negative electrode material, which comprises the following steps: mixing raw materials, carrying out two-stage high-temperature calcination, converting a lithium source and a titanium source into lithium titanate, carrying out disproportionation reaction to convert silicon monoxide into silicon simple substance silicon dioxide, removing silicon dioxide by acid etching, and carrying out carbon coating by chemical vapor deposition to obtain the carbon-coated lithium titanate composite silicon negative electrode material. A final product is obtained. The porous lithium titanate has the characteristics of zero volume expansion, high safety, long service life and low energy density, and the nano silicon has the characteristics of high specific capacity, large volume expansion and poor cycle performance, so that the comprehensive performance of high capacity, long cycle and high safety is finally realized by utilizing the synergistic effect of the porous lithium titanate and the nano silicon; compared with a silane chemical vapor deposition silicon process, the process is safe and low in cost; compared with a process of respectively preparing porous lithium titanate and nano silicon and then mixing, the preparation method disclosed by the invention has the advantages that the problem that nano silicon is easy to agglomerate is avoided, and the electrochemical performance of a finished product is effectively improved.