475 results about "Polymer gel" patented technology

The invention provides a three-dimensional network polymer gel electrolyte, a positive plate and a solid-state lithium battery. The three-dimensional network polymer gel electrolyte comprises 80-98% of an organic solvent, 5-15% of a lithium salt, 2-8% of lignosulfonate, 2-10% of a polymeric monomer and 2-8% of an ionic liquid, and the polymeric monomer is selected from acrylamide, polyethylene glycol dimethacrylate, 3-(methacryloyloxy) propyl trimethoxy silane or tetrahydrofurfuryl acrylate and the like. Under ultraviolet light, lignosulfonate can spontaneously generate quinonyl photochemical free radicals and hydroxyl photochemical free radicals in a mixed solution of ionic liquid and specific polymer monomers, and under the action of the photochemical free radicals, the lignosulfonate reacts with unsaturated double bonds on a polymer through phenolic groups, so that the photochemical free radicals are formed. The gel electrolyte with a three-dimensional network structure is formed, the mechanical strength can be improved, the growth of lithium dendrites in a lithium metal battery can be inhibited, and the metal lithium battery containing the gel electrolyte has excellent cycle life and safety performance.

The invention relates to the technical field of drilling fluid cooling, and discloses a phase change microcapsule suitable for drilling fluid cooling and a preparation method thereof.The phase change microcapsule comprises a capsule wall stabilizing material and a capsule core phase change material, and the capsule wall stabilizing material comprises polyurethane, polyurea, polyamide, polyimide, polystyrene and a first organic solvent; the capsule core phase change material comprises paraffin, fatty acid, polyol, inorganic hydrated salt, polymer gel, expanded graphite, carbon nanotubes, metal nanoparticles and a second organic solvent, and the first organic solvent is at least one of toluene, xylene, cyclohexanone and the like. The temperature of the drilling fluid is kept at a relatively low level, the cooling of the drilling fluid is realized, so that the drilling efficiency is improved, harmful solvents and additives are not used in the preparation process of the phase-change microcapsules, the phase-change microcapsules are pollution-free to the environment, and the requirements of greenness and environmental protection are met.

The present disclosure relates with the development of a process for producing gels from polymeric materials crosslinked with organic agents and their use controlling water in porous media under high salinity and temperature conditions. The characteristics of these gels enable them to have a good performance withstanding extreme conditions in mature Mexican oil wells and in others located in other parts of the world. The gels featured in the present disclosure include novel ionic terpolymers based on acrylamide (AM), N-vinylpyrrolidone (VP), N,N′-methylenebisacrylamide (BAA), 1-vinyl-3-butylimidazolium bromide (VIM4C[Br]) and organic crosslinking agents.

The invention relates to a long-term implantable gel composite woven medical catheter and a forming method thereof, the long-term implantable gel composite woven medical catheter comprises an inner film and a gel layer which are sequentially arranged from inside to outside, and a woven body is embedded in the gel layer. Compared with the prior art, the invention has the following beneficial effects: by introducing the PTFE inner layer, the reinforced braid layer and the polymer gel outer layer, perfect combination of internal lubrication, mechanical reinforcement and external functionalization of the catheter is realized; the novel method combining extraction, rapid cooling and vacuum freeze drying is adopted, the production efficiency is improved, the outer layer of the catheter is endowed with a unique microstructure, and the drug loading capacity and biocompatibility of the catheter are enhanced.

The invention relates to a functional liquid metal-based temperature-responsive hydrogel material and a preparation method thereof, and belongs to the technical field of functional polymer hydrogel materials.The preparation method comprises the following steps that a temperature-responsive hydrogel composite material comprises a hydrophobic association polymer gel and a hydrogel monomer, the hydrophobic association polymer gel comprises a hydrophobic association polymer monomer, a functional filler and an initiator. The functional filler is liquid metal gallium with the edge modified by graphene oxide, and has triple functions: firstly, the functional filler is used as an electrostatic crosslinking node to form a crosslinking network with anionic ionic liquid; secondly, dynamic repair is promoted, and Ga < 3 + > is released to promote dynamic bond recombination. In addition, as a functional filler, the hydrogel is endowed with excellent photo-thermal and electro-thermal conversion performance, and the multi-stimulus response capability is enhanced. The composite material realizes structural assembly by means of hydrophobic association, shows reversible phase change and repeated self-assembly characteristics under various stimuli such as photo-thermal, electric heating, direct heating and the like, and has wide application potential.

The invention relates to the technical field of polymer gels, and provides a multi-crosslinking composite gel and a preparation method and application thereof, the preparation method comprises the following steps: fully dissolving an activator in a buffer solution, and adjusting the pH value of the solution to 5.0-6.0 to obtain an activated solution; sequentially adding recombinant III-type humanized collagen, polydeoxyribonucleotide and chitosan into the activated solution, and uniformly dispersing to obtain a cross-linked precursor solution; adding a cross-linking agent into the cross-linking precursor solution, reacting for a period of time to obtain a cross-linking gel intermediate, and purifying to obtain the multi-cross-linking composite gel; the invention also provides the multi-crosslinking composite gel prepared by the preparation method, and application of the multi-crosslinking composite gel in the fields of beauty and plastic surgery. The material has biodegradability and good antibacterial performance, and can ensure slow release of the material and good filling effect and anti-enzymolysis effect at the same time.

The invention provides a preparation method of super absorbent resin, and relates to the technical field of super absorbent resin. The preparation method comprises the following steps: diluting acrylic acid with water, and adding alkali liquor for neutralization to obtain a neutralized solution; mixing an emulsifying agent, a thickening agent and foaming carbonate to obtain a foaming promoting auxiliary agent; adding a cross-linking agent, a photoinitiator and a temperature initiator into the neutralization solution to obtain a polymerization mother solution; uniformly mixing a foaming promoting auxiliary agent with the polymerization mother liquor, and initiating polymerization of the polymerization mother liquor under a UV illumination condition to obtain acrylate polymer gel; drying the acrylate polymer gel, and crushing and screening to obtain basic particles; and spraying a surface cross-linking treatment liquid on the surfaces of the basic particles, initiating a surface cross-linking reaction of the basic particles through heat treatment, and adding an inert filler after the surface cross-linking reaction to prepare the super absorbent resin finished product particles. The super absorbent resin disclosed by the invention has the characteristics of high reaction efficiency, high liquid absorption speed, good liquid passing performance, excellent reverse osmosis resistance and the like.

The invention provides a preparation method of a slag-based geopolymer cementing material and application of the slag-based geopolymer cementing material in building materials, and belongs to the technical field of building materials. According to the slag-based geopolymer cementing material, slag and fly ash serve as precursors, water glass serves as an alkali activator, the mass ratio of the slag to the fly ash is (5-7): (3-5), the doping amount of the water glass in the precursors is 15-25 wt%, and the modulus of the water glass is 1.0-1.4. Gel products of the slag-based geopolymer cementing material are mutually interwoven and overlapped, so that pores in a matrix can be more effectively filled, the porosity of the matrix is reduced, and a more compact cementing structure is formed, so that the mechanical property of the material is improved, and the slag-based geopolymer cementing material can be further used for preparing road base stabilized macadam, stabilized soil, concrete and other scenes.

The invention provides an emulsion slow crosslinking type plugging control gel, which is in an oil-in-water type, and is prepared from the following raw materials in percentage by weight: 25 to 40 weight percent of nonionic monomer, 0.5 to 2 weight percent of dihydroxy anthraquinone, 5 to 16 weight percent of anionic monomer, 0.002 to 0.2 weight percent of initiator and the balance of water. The emulsion comprises the following components in percentage by weight: 10 to 35 percent of deionized water, 15 to 30 percent of non-polar solvent, 2 to 8 percent of emulsifier, 1 to 4 percent of emulsifying aid and 0.5 to 1.5 percent of phase inversion agent. According to the plugging adjusting gel, the modified functional monomer dihydroxy anthraquinone is added, and the dihydroxy anthraquinone and monomers such as acrylamide are copolymerized to form oil-in-water type polymer gel, so that the initial viscosity is low, the strength and the plugging rate are high, and the gelling time is controllable.

The invention belongs to the field of moisture absorption materials, and discloses a temperature-sensitive hydrophilic-hydrophobic reversible conversion low-temperature regenerated moisture absorption material and a preparation method and application thereof. The temperature-sensitive hydrophilic-hydrophobic reversible conversion low-temperature regenerated moisture absorption material comprises a polymer matrix and inorganic salt, the polymer matrix is a copolymer of a temperature-sensitive monomer and a hydrophilic monomer, and the inorganic salt is loaded inside and on the surface of the polymer matrix. The hygroscopic material prepared by the method has reversible transition from a hydrophilic state to a hydrophobic state near the lowest phase transition critical temperature; the material is in a hydrophilic state during moisture absorption and is in a hydrophobic state during desorption, and the material has excellent moisture absorption performance and low-temperature desorption regeneration performance; the lowest phase transition critical temperature can be adjusted according to actual requirements to adapt to different moisture absorption application scenes, the polymer gel moisture absorption material is a ternary system, the three components achieve breakthrough improvement of the moisture absorption-desorption performance through the multi-stage synergistic effect, and a new normal form is provided for environment self-adaptive material design.

The invention belongs to the technical field of lithium ion battery materials, and discloses a semi-solid electrolyte and a lithium ion battery. The semi-solid electrolyte comprises an anhydrous solvent, a lithium salt, a functional additive and a polymer gel network, the polymer gel network is obtained by carrying out polymerization reaction on the following monomers in percentage by mass: 40 to 70 percent of acrylate monomer, 30 to 50 percent of polyether monomer and 1 to 10 percent of anthraquinone modified crosslinking monomer; the anthraquinone modified crosslinking monomer has a structural formula as shown in a formula (1). The anthraquinone modified crosslinking monomer is adopted to modify a polymer gel network of the semi-solid electrolyte, so that the ionic conductivity of the semi-solid electrolyte can be remarkably improved, meanwhile, the impedance with an electrode interface can be remarkably reduced, and a lithium ion transmission path is improved. Therefore, the electrochemical performance of the semi-solid lithium ion battery is obviously improved.

The invention discloses a high-strength cross-linked polymer gel profile control agent and a preparation and use method thereof, and the profile control agent comprises the following components by mass: 0.2-0.5% of polyacrylamide; 1 to 5 percent of silicon modified polyacrylamide gel particles; 0.12 to 0.3% of phenolic resin; 0.24 to 0.6 percent of absolute ethyl alcohol; 0.05 to 0.2 percent of oxalic acid; and the balance of water. Compared with the prior art, the plugging agent disclosed by the invention can be used for oil reservoirs with medium-high temperature of 80-120 DEG C, large permeability difference and large pore or crack development. The silicon-modified polyacrylamide gel particles can be subjected to a cross-linking reaction with polyacrylamide of a macromolecular chain structure, the polyacrylamide is self-crosslinked at the same time, and finally the silicon-modified polyacrylamide gel particles are crosslinked and fixed in a polyacrylamide cross-linked network structure to form an integrated cross-linked structure, so that the strength is higher.

The invention relates to the technical field of oilfield chemistry and high-temperature and high-salt oil reservoir profile control and water shutoff, in particular to a preparation method, a product and application of polymer gel particles with enhanced mechanical properties through a double-crosslinking domain structure. The preparation method comprises the following steps: dissolving a monomer, a cross-linking agent and an initiator in water, and carrying out free radical polymerization reaction to obtain polymer hydrogel; and drying the polymer hydrogel to obtain the polymer gel particles, the monomers comprise acrylamide, acrylic acid, N-(hydroxymethyl) acrylamide and 2-acrylamide-2-methylpropanesulfonic acid; the cross-linking agent comprises methacrylic acid esterified lignosulfonate and / or N, N '-methylene bisacrylamide. The preparation method disclosed by the invention is simple, and the polymer gel particles prepared by utilizing the method have a unique double-crosslinking domain structure, have excellent mechanical properties and excellent temperature resistance and salt tolerance, and are suitable for profile control and water shutoff of high-temperature and high-salt oil reservoirs.

A lithium battery comprising an anode, a cathode, a solid-state electrolyte, an interface enhancer composition in ionic communication with the anode and the cathode, wherein (a) the electrolyte comprises a solid polymer, a polymer gel, an inorganic solid-state, or a polymer / inorganic composite electrolyte; (b) the interface enhancer composition comprises a lithium salt, a liquid solution comprising an organic solvent or ionic liquid and a lithium salt dissolved therein, a polymer containing a lithium salt dissolved or dispersed therein, or a combination thereof; (c) the cathode comprises a cathode active layer comprising particles of a cathode active material, a conductive additive, an optional binder, and pores occupying 1% to 40% by volume of the cathode active layer and the interface enhancer resides in 30% to 100% of the pores; and (d) the interface enhancer is present between the solid-state electrolyte and the cathode and between the solid-state electrolyte and the anode.

The present application is directed to methods for solvent-free preparation of polymers and their subsequent processing into activated carbon materials. These methods unexpectedly demonstrate ability to tune pore structure in the polymer gel and carbon produced there from, while also providing distinct advantages over the current art.

The invention provides a nano oil-water phase permeability regulator and a preparation method thereof. The nano oil-water phase osmotic adjusting agent is prepared from the following raw materials in percentage by mass: 1.5 to 3 percent of scleroglucan pre-crosslinked particles, 2.5 to 5 percent of nano modified acrylamide, 0.2 to 3 percent of initiator, 0.2 to 2 percent of formaldehyde, 0.3 to 5 percent of diethanol amine, 0.5 to 5 percent of hydrochloric acid and the balance of water. Due to the scleroglucan pre-crosslinked particles, the thermosensitivity and the biological environmental protection property of the gel are improved, and the performances of salt resistance, temperature resistance, durability and the like are improved. Meanwhile, nano-modified acrylamide is obtained by grafting and modifying the surfaces of SiO2 particles and introducing cationic links and hydrophilic groups by adopting a silane coupling method, so that the nano-modified acrylamide has the adsorption and film-forming effects of polymer gel and a nano material, and the effect that 1 + 1 is greater than 2 is achieved. After being heated by the formation temperature, the particles expand to take the effects of occupying space, blocking and controlling water. The oil-water relative permeability of an oil layer is improved, water plugging and oil plugging are achieved, and important significance is achieved for plugging and controlling water in the extra-high water cut period and improving the productivity of an oil well.

The invention belongs to the technical field of petroleum and natural gas extraction, and discloses polymer gel for CO2 flooding and channeling sealing of a high-temperature oil reservoir and a preparation method of the polymer gel. The gel component is prepared from 0.4 wt% to 1 wt% of partially hydrolyzed polyacrylamide, 0.5 wt% to 2 wt% of phenolic resin, 0.2 wt% to 0.5 wt% of aluminum citrate, 0.2 wt% to 0.8 wt% of thiourea and the balance of water. The plugging agent has the characteristics of temperature resistance, acid resistance and the like, can effectively plug gas channeling channels such as heterogeneous high-permeability zones and natural / artificial fractures in CO2 drive oil reservoirs, and achieves the purposes of controlling gas channeling and enlarging gas drive waves and volumes.

The invention relates to the technical field of water pollution treatment, and particularly discloses a preparation method of phosphorus removal polymer gel, which comprises the following steps: reacting sodium alginate, modified ferroferric oxide-hydroxyapatite, N-(hydroxymethyl) acrylamide, acrylamide and a cross-linking agent to obtain the phosphorus removal polymer gel; the nano-hydroxyapatite and the nano-ferroferric oxide in the polymer gel have rich micropores, specific surface area and adsorption sites, the sodium alginate can form a three-dimensional network structure, provide supporting and fixing effects and increase the specific surface area and the adsorption sites of the material, and through the synergistic effect of adsorption and precipitation of the polymer gel, the specific surface area and the adsorption sites of the material are increased. The method has the advantages that phosphate can be efficiently removed, nano ferroferric oxide has superparamagnetism, rapid separation and effective recovery can be realized through a magnetic separation method, the recovery process is simplified, the recovery cost is reduced, secondary pollution is reduced, and the method is green and environment-friendly.

The invention provides a thermal response hydrogel construction method based on solid-liquid interface repulsive force and water content, which comprises the following steps: establishing a coarse graining model of a thermal response polymer network and a water molecule system, and constructing a three-dimensional polymer gel network by adjusting the number of polymer chain monomers and the proportion of a cross-linking agent; constructing a simulation box according to the network geometric dimension and filling the simulation box with water beads; defining interaction parameters among beads under the dissipative particle dynamics model, performing molecular dynamics simulation, counting the mass center of a polymer skeleton and the number of water beads adjacent to an interface, and calculating the equilibrium moisture content; establishing a solid-liquid interface model, and calculating an equilibrium distance and interaction energy between a water bead plane and a polymer skeleton plane at the adsorption temperature; the network polymerization degree is optimized by adjusting the number of polymer chain monomers, and the optimal design of the thermal response desorption performance is achieved. The method provided by the invention is suitable for macroscopic hydrogel structure evaluation, can quickly obtain equilibrium moisture content and interfacial interaction energy, and guides reasonable proportioning and preparation of the hydrogel.

In order to solve the technical problems that polymer gel is high in high-temperature cross-linking speed and short in stabilization time under high salinity, the invention discloses urea cross-linked delayed temperature-resistant and salt-resistant organic / inorganic composite gel and a preparation method thereof, and reactant raw materials comprise a polymer main agent, a phenol cross-linking agent, an aldehyde cross-linking agent, a deoxidant, urea and saline water. Urea forms organic / inorganic composite gel by delaying a polymer high-temperature cross-linking reaction and regulating calcium and magnesium ion precipitation reaction, under the conditions that the temperature is 95-120 DEG C, the total concentration of calcium and magnesium ions is 2200-9000 mg / L, and the total mineralization degree of saline water is 5 * 10 < 4 >-20 * 10 < 4 > mg / L, the gelling time of gel reaction liquid can be regulated between 2.2 d and 26.4 d, and the stabilizing time of the composite gel exceeds 135 d. The invention belongs to the field of novel materials for oilfield development, raw materials are easy to obtain, the preparation method is simple and convenient, and the deep profile control and water shutoff production requirements of high-temperature and high-salinity oil reservoirs can be better met.

The invention belongs to the technical field of photovoltaics, and particularly relates to a fiber gel solar cell based on a double-helix electrode structure and a preparation method of the fiber gel solar cell. A fiber photo-anode and a fiber counter electrode are spirally arranged in parallel and placed in a flexible transparent packaging tube, and the two fiber electrodes are tightly wrapped by a polymer gel electrolyte with an axial pore channel to form a fiber gel solar cell with a double-spiral fiber electrode structure; the preparation method comprises the following steps: firstly, preparing a polymer gel framework with an axial pore channel structure on a fiber electrode through in-situ polymerization, and then introducing an electrolyte solution by utilizing an axial pore channel and fully permeating and combining the electrolyte solution with the gel framework to form the polymer gel electrolyte. According to the invention, the electrochemical performance of the fiber gel solar cell can be effectively improved, and a high-performance gel electrolyte system for the fiber solar cell is widened, so that more high-efficiency quasi-solid fiber solar cells are developed.

The invention provides a thermal response type nano polymer gel blocking agent and a preparation method thereof. The method comprises the following steps: mixing 20-40 parts of vinyl silicon dioxide microspheres, 30-80 parts of a temperature-sensitive monomer, 15-30 parts of dimethylaminoethyl methacrylate, 6-10 parts of 3-acrylamidophenylboronic acid, 1-5 parts of a cross-linking agent and 100-150 parts of water to obtain a mixed solution; and adding 0.1-0.3 part of an initiator, stirring and reacting under the protection of inert gas, cooling, filtering, washing and drying to obtain the thermal response type nano polymer gel blocking agent. The plugging agent can tolerate the high temperature of 180 DEG C or above for a long time, the pressure-bearing plugging capacity reaches 16 MPa or above, the plugging efficiency and the permeability recovery value of a low-permeability shale core reach 100%, shale micropores and micro cracks can be efficiently plugged, a plugging layer with the permeability being zero is formed near a well wall, and the purposes of stabilizing the well wall and protecting an oil and gas layer are achieved.

The invention relates to pre-crosslinked zwitterionic nano composite gel temporary plugging particles and a preparation method thereof, and belongs to the technical field of oilfield chemical temporary plugging. The temporary plugging particles comprise the following raw materials: sodium carboxymethyl cellulose, a nano material, a zwitterionic monomer, a cationic monomer, a temperature-resistant monomer and a composite cross-linking agent. The preparation method comprises the following steps: dissolving and stirring the sodium carboxymethyl cellulose, the nano material, the anionic monomer, the zwitterionic monomer, the temperature-resistant monomer, the acrylamide and the cross-linking agent, and heating to 70 DEG C; adding an initiator into the solution, stirring and reacting for 3 hours in a nitrogen atmosphere, and cleaning, cutting, drying and grinding the obtained polymer gel to obtain the pre-crosslinked zwitterionic nano composite gel temporary plugging particles. The temporary plugging particles prepared by the invention are relatively stable in quality after being aged for 30 days at the high temperature of 160 DEG C, and can absorb 33.21 g / g of potassium formate water with the concentration of 1.55 g / cm < 3 > within one day.

The invention belongs to the field of functional porous materials, and particularly relates to novel N, S polycyclic aromatic hydrocarbon molecules and preparation thereof, preparation of porous organic porous polymer gel constructed by using the polycyclic aromatic hydrocarbon molecules and application of the porous organic porous polymer gel in photocatalytic water oxidation to generate hydrogen peroxide. The invention provides an N, S polycyclic aromatic hydrocarbon molecule which has a structural formula as shown in a formula I. The invention provides a novel N, S polycyclic aromatic hydrocarbon molecule and a synthesis method thereof. The porous organic polymer gel is synthesized by taking the porous organic polymer as a construction unit, and the synthesized gel has excellent processability and photoelectric activity, so that the gel shows an excellent rate of preparing hydrogen peroxide through photocatalytic water oxidation when being used as a photocatalytic material.

There is disclosed a polymer gel including a structure derived from a main monomer M1, a crosslinking agent monomer M2, and a radical polymerization initiator I as a constituent element. In this polymer gel, a monomer reactivity ratio r1 of the main monomer M1 and a monomer reactivity ratio r2 of the crosslinking agent monomer M2 satisfy a condition of r1>r2, a molar ratio of an addition amount of the crosslinking agent monomer to an addition amount of the main monomer M1 is 1% or less, and a decomposition rate (10−7 / s) of the radical polymerization initiator I at 25° C. is 25 or more. This polymer gel has properties of high strength and high viscosity.

The invention relates to the technical field of food safety detection, in particular to solid-phase extraction filler for detecting pesticide residues in food and a preparation method and application thereof.The solid-phase extraction filler comprises a magnetic filler core and a selective adsorption layer wrapping the magnetic filler core; wherein the interior of the magnetic filler core at least comprises magnetic particles and a coating layer for improving the stability of the magnetic particles; the selective adsorption layer is composed of a porous organic framework material which is chemically grafted outside the coating layer; and a temperature-sensitive polymer gel layer also covers the outer part of the selective adsorption layer. According to the solid-phase extraction filler disclosed by the invention, through an innovative hierarchical structure design, the extraction of trace pesticide residues in food can be effectively improved, the extraction difficulty is reduced, and the extraction efficiency and the extraction selectivity are improved.

The invention relates to the technical field of oil well cement admixtures in the field of oil field well cementation, in particular to a preparation method and application of a high-temperature-resistant graft modified gel suspension stabilizer. The invention aims to solve the problem that the molecular chain structure of the existing common high polymer material suspension stabilizer is easy to break at high temperature and loses the suspension stability. The preparation method of the high-temperature-resistant grafted modified gel suspension stabilizer comprises the following steps: step 1, dissolving a monomer in deionized water, introducing protective gas, regulating the pH value of the solution by using a pH regulator, dissolving an initiator and a cross-linking agent in deionized water, and uniformly stirring to obtain a solution A; and filtering, crushing, purifying and drying the polymer prepared by the reaction to obtain the polymer gel material. And 2, dissolving the grafted component inorganic nanoparticles in deionized water, adding the gel material, introducing protective gas, adding a grafting agent, and carrying out a chemical grafting reaction to obtain the grafted modified gel suspension stabilizer.

The invention belongs to the field of sensors, and particularly relates to a flexible capacitive sensor for lithium battery pressure detection and a preparation method thereof. The sensor comprises a first polar plate and a second polar plate which are stacked, the dielectric layer is stacked between the first polar plate and the second polar plate, a bulge array is arranged on one side, close to the first polar plate, of the dielectric layer, a gap is reserved between the top of the bulge array and the first polar plate, the bottom area of bulges is larger than the top area of the bulges, and the dielectric layer is a polymer ionic liquid gel layer with a porous structure; the Spacer layer is stacked between the first polar plate and the dielectric layer and arranged on the periphery of the bulge array in a sleeving manner, one side of the Spacer layer is attached to the surface of the edge of the bulge array of the dielectric layer, the other side of the Spacer layer is attached to the first polar plate, and the Spacer layer is a polymer gel layer with a porous structure; the polymer, the porosity and the average pore size of the Spacer layer correspond to the polymer, the porosity and the average pore size of the dielectric layer; the sensing sensitivity and linearity can be improved, and the detection range can be widened.

The invention belongs to the technical field of polymer gel materials, and discloses ionized water gel as well as a preparation method and application thereof. Raw materials of the ionized water gel comprise a precursor solution and water, the precursor solution is an acidic hydrophilic ionic liquid and a vinyl monomer containing a hydrophilic group, and the water is used for adjusting the interaction between the acidic hydrophilic ionic liquid and the vinyl monomer. The ionized hydrogel is prepared through a water-mediated polymer network recombination strategy, the technical problems that the toughness and hysteresis of a traditional gel material are difficult to balance and the comprehensive performance is insufficient are effectively solved, the problem that the toughness and hysteresis of the traditional gel material are mutually restricted is broken through, and the prepared ionized hydrogel has good mechanical deformation resistance when bearing mechanical deformation. According to the material, energy can be effectively dissipated to prevent breakage, energy loss and signal distortion caused by lagging can be reduced, the reliability of the material in dynamic mechanics application is greatly improved, and for example, the material can still work stably when a wearable device deforms frequently.

The invention relates to the technical field of polymer gel materials, in particular to silk fibroin hyaluronic acid double-network gel for filling nasolabial grooves and a preparation process of the silk fibroin hyaluronic acid double-network gel. According to the invention, the tannic acid, the cinnamyl aldehyde, the lidocaine and the mesoporous polydopamine nanoparticles are added, so that the composite antibacterial material is prepared. The preparation method comprises the following steps: adding hyaluronic acid, sodium periodate, propylated chitosan and a photoinitiator 2959 to obtain a solution A; adding silk and sodium alginate to obtain a solution B; mixing the solution A and the solution B, fully stirring, adding a composite antibacterial material, and continuously stirring to obtain a mixed cross-linking solution; sequentially carrying out ultrasonic defoaming, freezing overnight and freeze drying on the mixed cross-linking solution to obtain aerogel; and dipping the aerogel in a calcium chloride solution, and carrying out ultraviolet crosslinking, water washing and freeze drying to obtain a finished product. The finished product prepared by the invention has excellent antibacterial property and high crosslinking degree, so that the finished product has wide application prospects in the technical field of polymer gel materials.