90 results about "Polydimethyl siloxane" patented technology

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 belongs to the technical field of bionic cilium sensors, and particularly discloses a magnetic bionic cilium and vesicle complex and a preparation method and application thereof.The preparation method comprises the following steps that S1, a cilium array male mold is prepared; then carrying out oxygen plasma treatment, silanization and curing stabilization; s3, injecting the magnetic composite precursor into a polydimethylsiloxane female die, applying pressure, and striking off; and S4, coating the mold surface with an Ecoflex precursor, performing thermocuring forming, performing magnetization treatment, and performing stripping to obtain the magnetic bionic cilia. According to the magnetic bionic cilia, the vesicle complex and the preparation method and application of the magnetic bionic cilia, the vesicle complex and the preparation method and application of the magnetic bionic cilia, high-magnetic signal output is achieved while the deformability of the cilia is guaranteed, the magnetic bionic cilia is used for non-contact real-time hemodynamic monitoring, meanwhile, specific response release of the vesicle complex is achieved, and a new thought is provided for design of responsive vascular implants.

The invention relates to the field of printing ink, and particularly discloses water-based silk-screen printing oil, an applied water-based silk-screen printing protective film and a construction technology of the water-based silk-screen printing oil. The water-based silk-screen printing oil is prepared from the following raw materials: water, filler, a film-forming agent, polydimethylsiloxane dispersion liquid, polyamide wax, a polyether siloxane copolymer, an amine neutralizer and a resin matrix; the resin matrix is a mixture of water-based polycarbonate resin or water-based polyurethane resin and water-based soft polyurethane resin; the invention also discloses a water-based silk-screen protective film prepared from the water-based silk-screen ink through a silk-screen process, and also discloses a construction process of the water-based silk-screen protective film, and the construction process comprises the following steps: respectively preparing a primer and a finish paint; the preparation method comprises the following steps: respectively preparing a primer and a finish paint, mixing, carrying out silk-screen drying to form a primer layer, mixing the finish paint with a water-based high-temperature-resistant curing agent, and carrying out silk-screen to form a finish paint layer. The preparation method has the characteristic of preparing the environment-friendly high-temperature-resistant strippable water-based silk-screen printing ink.

The application discloses a kind of flame-retardant mildew-proof prepolymer, transparent flame-retardant mildew-proof silicone sealant and preparation method thereof.The flame-retardant mildew-proof prepolymer is prepared from raw materials including the following components by weight: mildew-proof agent 0.5-10 parts, flame retardant 20-50 parts, tackifier composition 0.2-2 parts;The tackifier composition is composed of alkyl acetoacetate, trimethylsilyl ethyl acetate, 3-isocyanate propyl trimethoxysilane and polyether silicone oil.The transparent flame-retardant mildew-proof silicone sealant is prepared from raw materials including the following components: alkyl alkoxy-terminated polydimethylsiloxane, white carbon black, the flame-retardant mildew-proof prepolymer, crosslinking agent, catalyst, coupling agent.The transparent flame-retardant mildew-proof silicone sealant prepared by the application not only has very high transparency, but also has excellent flame-retardant effect, long-lasting mildew-resistant and antibacterial properties, and good bonding stability and mechanical strength.

The application relates to a preparation method of a Zn-MOF derivative carbon-based super-hydrophobic wave-absorbing textile, which is prepared by immersing the textile in a mixed solution of silicone and Zn-MOF derivative carbon, and then sequentially performing padding, pre-drying and baking to obtain the Zn-MOF derivative carbon-based super-hydrophobic wave-absorbing textile; the silicone is hexadecyl trimethoxysilane, gamma-methacryloyloxypropyl trimethoxysilane, polydimethylsiloxane or polydimethylhydroxysiloxane; the Zn-MOF derivative carbon has a regular polyhedral structure and a diameter of 50-500 nm; the minimum reflection loss of the Zn-MOF derivative carbon is-20 to-50 dB; the water contact angle of the Zn-MOF derivative carbon-based super-hydrophobic wave-absorbing textile is not lower than 150.7 degrees, and the minimum reflection loss is not higher than-21.2 dB; the preparation method is simple, and the prepared product has super-hydrophobic and wave-absorbing properties.

This invention belongs to the field of catalyst technology, and discloses a high-efficiency platinum catalyst, its preparation method, and its application. The preparation of the high-efficiency platinum catalyst of this invention includes mixing and stirring a Karstedt catalyst, a ligand, and a catalyst, adding vinyl-terminated polydimethylsiloxane, and fully dissolving it to obtain the high-efficiency platinum catalyst. The obtained catalyst is used to prepare filler-free flame-retardant silicone rubber, which comprises the following raw materials in parts by weight: 80-100 parts vinyl-terminated polydimethylsiloxane, 2-4 parts crosslinking agent, 2-10 parts of the high-efficiency platinum catalyst of this invention, and 0.2-0.3 parts polymerization inhibitor. This invention provides a novel modified platinum catalyst for silicone rubber, which enhances the anti-sintering properties of Pt at high temperatures through the nitrogen-containing carbene ring and the Pt ligand, thereby improving the flame-retardant properties of silicone rubber brought by the platinum catalyst.

The invention discloses a double-component room-temperature curing acetone-removing type organic silicon sealant and a preparation method thereof, and belongs to the technical field of polymer sealing materials, the sealant comprises a component A and a component B. The component A comprises alpha, omega dihydroxy polydimethylsiloxane, an acid-resistant reinforcing filler and a thixotropic filler, and the component B comprises a component A and a component B. The component A comprises alpha, omega dihydroxy polydimethylsiloxane, an acid-resistant reinforcing filler and a thixotropic filler. The component B comprises alkoxy-terminated polydimethylsiloxane, an acid-resistant reinforcing filler, a thixotropic filler, a heat-resistant filler, carbon black, a deacetonized cross-linking agent, a silane coupling agent and a catalyst. In particular, the invention also provides a preparation method of the alkoxy-terminated polydimethylsiloxane. The heat resistance of a deacetone silica gel system with excellent heat resistance is further improved and optimized, meanwhile, the requirements for rapid curing and attractive appearance of the microwave oven glue are met, the mixing volume ratio of the two components is 1: 1 during use, the requirement for equipment metering precision is low, and automatic equipment gluing of a gluing robot is facilitated.

A pixel array and a method of manufacturing the same, the pixel array including a pixel sensor and a polydimethylsiloxane layer over the pixel sensor, wherein a surface of the polydimethylsiloxane layer includes a plurality of structures, each structure having an individual width that is less than a wavelength of an incident light to be sensed by the pixel sensor.

The invention relates to a multi-concentration flow-rate-controllable micro-fluidic chip for zebra fish preference behavior analysis. The micro-fluidic chip comprises a glass base layer and a polydimethylsiloxane layer, wherein the upper part of the polydimethylsiloxane layer contains an integrated chip structure. The chip structure comprises a first chip for controlling concentration gradient, a second chip for realizing dynamic regulation and control of flow velocity and a third chip for observing zebra fish behaviors, and the three chips are connected in sequence to analyze zebra fish preference behaviors. According to the invention, a three-chip integrated design is adopted, and the first chip generates fluids with various concentrations by using a concentration gradient generator with uniform hierarchy distribution; the second chip is provided with a permanent magnet in a fluid channel, an equal-flow-resistance path is constructed, and path switching and the flow proportion of fluid with different concentrations are adjusted to control the flow speed; the symmetrical cavity structure of the third chip enables the concentration-flow velocity combined fluid to be uniformly distributed, and a multi-region environment gradient is formed. The design overcomes the limitation of single regulation and control in the prior art, can cooperatively regulate and control the concentration and the flow velocity, simulates a multi-factor coupling scene, and expands the zebra fish preference behavior research dimension and reliability.

The invention relates to the technical field of fluorosilicone resin water cups. The fluorosilicon resin composite material is prepared from the following raw materials in parts by weight: 50 to 70 parts of hydroxyl-terminated polydimethylsiloxane, 10 to 20 parts of tetraethoxysilane, 25 to 35 parts of perdecafluorooctyltriethoxysilane, 5 to 15 parts of phenyltrimethoxysilane, 10 to 20 parts of xylene, 3 to 8 parts of an additive and 1 to 2 parts of dibutyltin dilaurate. According to the invention, ryegrass contains natural antibacterial ingredients of flavones and phenols, lignin and phenol in the powder also have antibacterial properties, phenolic hydroxyl groups of phenol can be combined with bacterial proteins to denature the proteins and inhibit bacterial growth, and benzyltriethylammonium chloride in the base material is added, so that bacteria can permeate to interfere the metabolism of the bacteria, and the antibacterial property of the powder is improved. Silver ions and quaternary ammonium salt can be slowly released through the resin matrix, the antibacterial effect is maintained for a long time, and the antibacterial performance of the fluorosilicone resin composite material water cup is improved.

The invention discloses a rodlike carbon nitride-polydimethylsiloxane composite coating and a preparation method and application thereof.The rodlike carbon nitride-polydimethylsiloxane composite coating is prepared by mixing rodlike carbon nitride filler, polydimethylsiloxane and a curing agent, and even doping of the rodlike carbon nitride filler can effectively improve the crosslinking density of the composite coating; the adhesive force and the tensile strength of the coating are enhanced; when the composite coating is applied to the surface of a matrix, a multifunctional nano coating with mechanical reinforcement, long-acting corrosion prevention and microbial antifouling characteristics can be formed, the impedance arc radius is kept at 5.17 * 10 < 9 > omega.cm < 2 > after the composite coating is soaked for 60 days, and the composite coating shows excellent bacteriostasis and sterilization performance on chlorella and escherichia coli; the excellent biological pollution prevention characteristic is shown.

The invention provides a microalgae cell swelling inertia screening and impedance detection integrated micro-fluidic device, and relates to the technical field of microalgae cell screening and detection. The microalgae cell swelling inertia screening and impedance detection integrated micro-fluidic device comprises a signal processing unit, the substrate is ITO (Indium Tin Oxide) conductive glass; the main micro-channel is of a micro-channel structure which is formed in a polydimethylsiloxane (PDMS) layer and is bonded on the substrate. According to the invention, the passive sorting module based on the expansion and contraction inertia effect and the differential impedance detection module are integrated in the single micro-fluidic chip, so that the full-process automation of'sample introduction-sorting-detection-output 'is realized. Sample loss, cross contamination and activity damage are avoided, interference of mixed cell populations on subsequent impedance signals is effectively eliminated through pre-sorting, and the accuracy of target microalgae detection is remarkably improved.

This invention relates to the field of textile technology and discloses a method for preparing a nano-silver antibacterial and deodorizing ultra-soft sofa fabric. The fabric includes a fiber substrate and a three-dimensional polymer coating in situ cross-linked on its surface. The finishing working solution uses water as a solvent and contains branched polyethyleneimine, nano-silver dispersion, terminal epoxy-modified polydimethylsiloxane, and glacial acetic acid. During solution preparation, glacial acetic acid is used to adjust the pH to 4.5–5.0, causing the polyamine groups to protonate and form a kinetic dormancy state, ensuring stability at room temperature. After padding, a three-stage gradient baking process is performed, where the bound acetic acid is desorbed and vaporized upon heating, restoring the active amine groups to undergo in-situ ring-opening addition cross-linking with the terminal epoxy groups. Polyethyleneimine anchors the nano-silver through multi-toothed chelation, and epitaxial siloxane segments form a comb-like hydrophobic isolation layer. This invention inhibits metal-catalyzed yellowing of the fabric, significantly improves the wash fastness of the antibacterial components, and imparts an excellent soft touch to the fabric through molecular-level lubrication.

Present invention describes a commercial manufacturing process of a stable emulsion having particle size (D50 value) up to 1000 nanometer and up to 3000 ppm of cyclosiloxane(s) comprises providing a formulation comprising a mixture of two or more organopolysiloxane first emulsifying using a mixture of non-ionic and neutralized anionic emulsifier and undergoing emulsion polymerization below 12° C. by a non-neutralized anionic emulsifier and then neutralizing the emulsion by alkali to a pH range 6-8.

The invention belongs to the technical field of multifunctional fabric manufacturing, and particularly relates to a flame-retardant, antibacterial and hydrophobic cotton-polyester blended fabric and a preparation method thereof. A simple padding and baking method is adopted, polyethyleneimine, guanidine phosphate and boric acid are compounded to serve as functional finishing liquid to conduct padding on the fabric, then hydrophobic polymer spraying liquid is adopted for spraying, and the flame-retardant function, the antibacterial function and the hydrophobic function are successfully integrated into the cotton-polyester blended fabric. The polyethyleneimine effectively fixes the guanidine phosphate and the boric acid on the fabric, the guanidine phosphate and the boric acid can play an efficient phosphorus-nitrogen-boron synergistic flame-retardant role during combustion, formation of a compact carbon layer is promoted, and meanwhile efficient broad-spectrum antibiosis is achieved. The polydimethylsiloxane is attached to the surface of the cotton-polyester blended fabric, water molecules are difficult to spread on the surface of the cotton-polyester blended fabric, the lower flame-retardant / antibacterial layer is physically protected, the loss of the lower flame-retardant / antibacterial layer in washing or friction is reduced, the fabric is endowed with washable and wear-resistant hydrophobicity, the process is simple, the energy consumption is low, and the production efficiency is improved.

The invention discloses composite plant fiber concrete for a water storage reservoir and a preparation method, and relates to the technical field of building materials, the composite plant fiber concrete comprises the following raw materials by mass: 350-400 parts of cement, 50-110 parts of a mineral admixture, 700-750 parts of fine aggregate, 1000-1100 parts of coarse aggregate, 150-170 parts of water, 3.2-7.65 parts of a water reducer, 0.8-2.0 parts of modified jute fiber and 1.6-3.0 parts of modified straw fiber; wherein both the modified jute fibers and the modified straw fibers are composed of plant fiber bodies and composite coatings wrapping the plant fiber bodies. According to the invention, a double-layer composite coating of epoxy resin / nano clay and polydimethylsiloxane / wollastonite powder is constructed to carry out targeted modification on jute fibers and straw fibers, and an optimized fiber mixing amount and a mixing process are combined, so that the plant fiber concrete special for the water storage reservoir with excellent mechanical properties and long-term durability is prepared; the industrial problem that a single coating modification technology cannot give consideration to alkali resistance and hydrophobicity of fibers and strong interface bonding with a cement matrix is solved.

The invention relates to moisture-proof plywood and a preparation method thereof, and belongs to the technical field of plywood processing.The moisture-proof plywood is obtained by gluing three layers of veneers through an adhesive, and the fiber directions of the adjacent layers of veneers are perpendicular to each other; the adhesive is composed of a liquid adhesive and a filling agent; wherein the liquid glue is prepared from the following raw materials in parts by weight: 40 to 45 parts of isocyanate, 6 to 12 parts of dioctyl phthalate, 3 to 6 parts of triethyl orthoformate, 12 to 16 parts of epoxidized soybean oil and 1 to 3 parts of polydimethylsiloxane; the filling agent is prepared from the following raw materials in parts by weight: 35-55 parts of wood flour, 10-20 parts of calcium carbonate, 30-35 parts of aluminum stearate and 5-10 parts of carbon nanotubes. The fiber directions of the adjacent layers of veneers are perpendicular to each other, the veneers can be prevented from being broken in the fiber directions, the adhesive is prepared in the mode that the liquid adhesive and the filler are combined, the filler provides a framework for the liquid adhesive, and the viscosity, the leveling property and other construction performance of the adhesive can be controlled.

The invention relates to the technical field of thermal interface materials, in particular to a bottle brush type polydimethylsiloxane film, a preparation method of the bottle brush type polydimethylsiloxane film, a thermal interface material and application of the thermal interface material. According to the bottle brush type polydimethylsiloxane, polymethylvinyl siloxane with double bonds in a side chain serves as a main chain, silicon hydrogen group single-end-capped polydimethylsiloxane serves as a bottle brush chain, silicon hydrogen group double-end-capped polydimethylsiloxane serves as a cross-linking chain, and the density of the bottle brush chain is 10-70 mol%. The thermal interface material comprises a bottle brush type polydimethylsiloxane film and a copper array vertically and directionally distributed on the bottle brush type polydimethylsiloxane film. The bottle brush type polydimethylsiloxane film is applied to a thermal interface material, good contact of an interface can be achieved, low contact thermal resistance is obtained, low adhesion before curing is beneficial for blade coating to prepare a thin film, and formation of a thin film with a smaller thickness is beneficial for reducing bulk phase thermal resistance of the thermal interface material. The thermal interface material can remarkably improve the axial heat conduction efficiency and reduce transverse interface scattering.

The invention relates to an infrared polarized photoelectric detector and a preparation method thereof, and belongs to the technical field of photoelectric detection, and the preparation method comprises the following steps: 1, cleaning a substrate; 2, preparing a patterned metal electrode; step 3, preparation and transfer preparation of a two-dimensional material; respectively stripping from the blocky niobium diselenide crystal and the blocky black phosphorus crystal by adopting a mechanical stripping method to obtain a niobium diselenide sheet and a black phosphorus sheet, and respectively transferring the obtained sheets to the surface of a polydimethylsiloxane elastomer; step 4, Van der Waals assembling of the two-dimensional metal electrode; the two niobium diselenide sheets are sequentially transferred to the substrate with the patterned metal electrodes through a micromanipulation system, the two niobium diselenide sheets are aligned with the two patterned metal electrodes respectively and make close contact with the patterned metal electrodes, and a set distance is kept between the two niobium diselenide sheets; step 5; forming a heterojunction structure; the beneficial effects of the invention are that through the NbSe2-BP-NbSe2 structure, the intrinsic anisotropy of black phosphorus is utilized to respond to polarization information, and the infrared polarization detection precision is improved.

The present application relates to the technical field of layered composite fabric, and particularly relates to a layered composite fabric based on waterproof and weather-resistant coating, a preparation method and application. The layered composite fabric comprises an outer fabric and an inner fabric, the inner fabric is a bamboo cotton fabric, and the outer fabric is a nylon fabric with a waterproof and weather-resistant coating, which is prepared by impregnating treatment of a bio-based nylon fabric in a composite finishing agent and solidification. The composite finishing agent is prepared by the following steps: including the following method: reacting diisocyanate, polyether polyol, bio-based polyester polyol and hydroxyl-terminated polydimethylsiloxane in N,N-dimethylacetamide to obtain a polyurethane prepolymer solution; adding N-octadecyl diethanolamine for chain extension reaction; adding bromo-n-butane for quaternization reaction; and finally adding a composite weather-resistant additive, stirring to obtain the composite finishing agent.

The application discloses a kind of wood fiber-based super-hydrophobic coating and preparation method thereof, belong to super-hydrophobic coating technical field.The preparation method of the application includes the following steps: after drying hot ground mechanical pulp is added in eutectic solvent and swells, then reaction is heated, after reaction is terminated, filter while hot, filter residue is washed with hot ethanol, then the filter residue is dispersed to nanoscale in ethanol mechanically, and is settled;Take the bottom settlement layer and spray to the substrate surface, then the mixed solution of polydimethylsiloxane and curing agent is sprayed to the substrate surface again, after drying, it is obtained.The application uses hot ground mechanical pulp as raw material, and the cost is low, and the requirement for equipment is low during preparation;The application realizes the construction of super-hydrophobic coating by two-step spraying method, and the production process is green and environmentally friendly, does not contain high-toxicity chemicals, and the preparation method is simple and easy to operate, and has practical application value.

This invention discloses a method and device for copper ion detection based on a single-component dual-mode platform, belonging to the field of heavy metal ion detection, chemical sensing, and polydimethylsiloxane microfluidic integrated analysis technology. This invention uses Py-OH as a single recognition molecule and integrates a colorimetric detection module with an organic single-crystal field-effect transistor (OSCFET) electrical detection module through a PDMS microfluidic platform. The device utilizes the simultaneous generation of solution color changes and transistor current changes through the same coordination event, combined with smartphone image analysis and data fusion algorithms, to achieve highly sensitive and selective detection of copper ions. This invention also features high sensitivity in electrical detection (detection limit 0.39 ng / mL). ‑1 The intuitive and portable nature of colorimetric detection effectively solves the problems of insufficient reliability of traditional single-mode detection and low integration of multi-probe dual-mode systems, and has important application value in environmental emergency and on-site screening.

The invention relates to the technical field of cosmetics, in particular to a powder composition and a preparation method and application thereof, and the key point of the technical scheme is that the preparation method comprises the following steps: S1, mixing a surface treating agent with isopropanol, and uniformly stirring to obtain a mixed solution; s2, uniformly mixing nano metal oxide, clay, boron nitride, toner and isopropyl alcohol, and enabling the nano metal oxide, the clay and the boron nitride to form a primary coating layer on the surface of the toner, so as to obtain a pasty mixture; s3, fully mixing and grinding the mixed solution and the paste mixture to enable the surface treating agent to be attached to the surface of the primary coating layer to form outer coating, and then drying and crushing to obtain a powder composition; wherein the surface treating agent is one or more of polydimethylsiloxane and polydimethylsiloxane alcohol. According to the invention, a double structure of inner layer physical coating and outer layer chemical coating is constructed, so that high stability of the toner is realized, and meanwhile, the ductility, the skin fitting property and the makeup keeping effect of the toner are improved.

The invention discloses a preparation method and application of an alkoxy modified tackifier for an addition type organic silicon pouring sealant. The preparation method comprises the following steps: by taking 1, 1, 1, 3, 3, 3-hexamethoxy-2-(trimethoxysilyl) propyl silane and vinyl-terminated methyl-terminated polydimethylsiloxane as raw materials, reacting in the presence of a catalyst and under the condition of high temperature to synthesize tri-(trimethoxysilyl)-terminated methyl-terminated polydimethylsiloxane, and carrying out polycondensation and impurity removal on the tri-(trimethoxysilyl)-terminated methyl-terminated polydimethylsiloxane and olefin silane to prepare the alkoxy modified tackifier. 0.3-1.5 parts by mass of the tackifier is added, so that the bonding strength of the pouring sealant on multiple substrates can be remarkably improved, the weather resistance is excellent, the storage performance is stable, the viscosity and the fluidity of colloid are not influenced, and the tackifier is suitable for preparing the high-performance pouring sealant.

The invention relates to the technical field of surface coatings, in particular to a fluoride-free anti-fingerprint coating working solution, a method for forming a fluoride-free anti-fingerprint coating on a base material and a workpiece with the fluoride-free anti-fingerprint coating. The fluoride-free anti-fingerprint coating working solution provided by the invention comprises a main agent and a solvent, the main agent is prepared from the following components in percentage by mass: 20 to 25 percent of trimethoxy siloxane modified polyhedral oligomeric silsesquioxane; 20% to 25% of trimethoxy double-end-capped polydimethylsiloxane; 20% to 25% of trimethoxy single end capped polydimethylsiloxane; 15% to 20% of octadecyl trimethoxy silane; 10% to 15% of 1, 2-bis (triethoxysilyl) decane; 2%-5% of a cross-linking agent; 0.05% to 0.08% of a catalyst; wherein the trimethoxy siloxane modified polyhedral oligomeric silsesquioxane has a structure as shown in a formula (1) which is described in the specification. According to the invention, the coating has excellent hydrophobicity and wear resistance.

The present application relates to the technical field of silicone glue, and particularly relates to a water plugging silicone glue and a preparation method thereof; the water plugging silicone glue comprises the following components: 80-90 parts of alkoxyl-terminated polydimethylsiloxane, 30-50 parts of plasticizer, 15-35 parts of filler, 3-8 parts of cross-linking agent, 1.5-3.5 parts of curing accelerator, 0.5-1 part of catalyst, 0.5-1 part of coupling agent, 0.5-2 parts of stabilizer and 5-8 parts of swelling fiber; wherein the swelling fiber is cross-linked PVA fiber; the cross-linked PVA fiber is used to replace natural fiber, so that the acid and alkali resistance is further improved, and the swelling capacity is also provided; the water plugging effect can be achieved without adding sandart glue and other swelling raw materials; the thickness and length of the cross-linked PVA fiber can be accurately controlled, so that the consistency of the silicone glue product quality is improved.

The application discloses a high-flux fiber physiological electrode, a preparation method, an electrode array and application thereof, and belongs to the field of flexible electronics and biomedical sensing. The electrode adopts a three-layer coaxial fiber structure, the inner layer is a high-conductivity core layer containing MXene, carbon nanotubes and poly 3,4-ethylenedioxythiophene, the middle layer is an insulating layer such as polydimethylsiloxane, and the outer layer is a self-adhesive layer based on dynamic bond cross-linked polyvinyl alcohol and polyacrylic acid. The diameter of a single fiber is 50-100 mu m. By utilizing the reversible adhesion characteristics of the outer layer dynamic bond and / or non-covalent interaction, multiple fibers can be freely assembled into a high-density and reconfigurable electrode array. The array has excellent electrochemical performance, mechanical matching, interface adhesion stability and biocompatibility, and has a stimulation response and self-healing ability, is suitable for long-term stable wearable physiological monitoring and implantable closed-loop neural interface, and can realize high spatiotemporal resolution bioelectric signal recording and regulation.

Provided is a cell culture membrane for use during a cell stretching process that stresses the cell to induce mechanical signaling and thus biochemical signals in the cell. A production method for the cell culture membrane includes: providing a mold assembly with a lower plate containing pin slots, an upper plate placed on the lower plate and including at least one window, pins to be placed in said pin slots, and a mold to be placed between the pins remaining in said window; placing pins in the pin slots remaining in the said window and placing a mold of primary length in the window; pouring the polydimethylsiloxane-solidifier mixture into the window in an amount that exceeds the primary length; eliminating the air bubbles in the mixture; baking the mold assembly in which said mixture is located, and then leaving the assembly to cool and removing it from the mold assembly.

The invention relates to the technical field of cosmetic preparation, in particular to a cosmetic formula preparation process taking a silicon-based composite material as a carrier, which comprises the following steps of: homogenizing and mixing cyclopentasiloxane, phenyltrimethylsiloxane and nanospheres to form a phase A; heating and dissolving water, butanediol and sodium chloride into a phase B; adding a W / Si type emulsifier into the phase A, adding the phase B while stirring, keeping the temperature, and performing high-shear homogenization to form an emulsified body; then stirring and cooling the emulsified body, sequentially adding a xanthan gum solution for thickening and essence after cooling, homogenizing, degassing and filling to obtain a finished product. The cosmetic formula prepared by the invention shows remarkable advantages in the aspects of physical stability and active matter controlled release performance.