162 results about "Polymer gel" patented technology

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.

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.

Described herein are compositions and uses for an adaptive polymer system. Components of the polymer are used to balance smart behavior around an environmental trigger point with desirable material properties and formulation additives. The APS allows engineering of smart materials and products with desired smart behaviors and material properties on both sides of the trigger point for that behavior. When applied to solvent-based polymer gels, the APS allows for precise control of cloud point behavior and material properties that enable a range of consumer, biomedical, and industrial applications.

The invention discloses N-alkylated / sulfonated benzimidazole polyaryletherketone / polyaryletherketone sulfone with controllable grafting density as well as a preparation method and application of the N-alkylated / sulfonated benzimidazole polyaryletherketone / polyaryletherketone sulfone. The preparation method comprises the following steps: firstly, introducing a protecting group on a phenolic hydroxyl group of a bisphenol monomer containing a benzimidazole structure, then carrying out nucleophilic substitution reaction on alkyl halide / alkyl halide sulfonic acid and-NH, and then removing the protecting group to obtain an N-alkylated / sulfonated benzimidazole functionalized bisphenol monomer; copolymerizing the monomer, a bisphenol monomer and a difluoro monomer to obtain a polymer; alkyl or alkyl sulfonic acid is introduced to a benzimidazole ring, so that-NH bonds are passivated, a steric hindrance effect is formed, and gelation of the polymer under a high polymerization degree is avoided; by adjusting the molar ratio of the monomers, the retention stability of the functional groups can be effectively controlled, and compared with the traditional grafting on the polymer, the non-regulation of functionalization and the gelation of the polymer are effectively avoided.

The invention relates to Al2O3 / C powder as well as a preparation method and application thereof, and belongs to the field of ceramic powder preparation. The invention relates to a preparation method of Al2O3 / C powder, which comprises the following steps: by taking aluminum acetate as a raw material, acrylamide as an organic monomer, N, N '-methylenebisacrylamide as a cross-linking agent and ammonium persulfate as an initiator, forming polymer gel with a three-dimensional network structure through a sol-gel method, and drying to obtain dry gel powder; and pyrolyzing the dry gel powder in nitrogen to obtain Al2O3 / C powder with a porous structure characteristic. According to the invention, acrylamide is utilized to form gel with a three-dimensional network structure, Al < 3 + > is trapped in pores of the gel structure, so that an aluminum source and a carbon source are uniformly distributed on a molecular level, and growth of Al2O3 particles is effectively inhibited by utilizing an isolation effect of C and combining a rapid heating process, so that the diffusion distance of a substance for forming AlN is greatly shortened, and the preparation process is simplified. According to the method, rapid formation of AlN is promoted, the reaction time is effectively shortened, the efficiency is improved, and the obtained pure-phase AlN powder is small in particle size.

This invention relates to a method for producing organometallic coordination polymers and materials obtained using the provided method. The organometallic coordination polymer synthesized according to this method has a gel structure, characterized by an effective diameter of 0.75-0.80 nm and a specific area of ​​1300-1700 m². 2 / g, micropore volume of 0.5-0.6cm³ 3 The method yields nanopores per g and improved thermal stability. The synthesis method allows for reduced material consumption during the process by using a single solvent in both the synthesis and activation stages, thus shortening the production time of the polymer gel, which is characterized by active mesopores and micropores. This makes it suitable as a matrix in various absorption processes, including natural gas storage systems.

The present application relates to a kind of porous gel electrolyte membrane based on polyvinylidene fluoride and its preparation method, belong to polymer gel electrolyte field.The porous gel electrolyte membrane includes gel electrolyte matrix, inorganic ceramic nano filler, lithium salt electrolyte and lithium salt auxiliary agent.Using phase inversion solidification method, the uniform porous structure is obtained, the adsorption and storage capacity of porous gel electrolyte membrane to electrolyte are improved;Using inorganic ceramic nano filler with high ionic conductance, the ionic conductance and mechanical strength of porous gel electrolyte membrane are enhanced;Using lithium salt added during preparation, the dehydrofluorination reaction of PVdF is inhibited, the stability of slurry is ensured, and by inducing the transition of PVdF matrix from alpha phase to beta phase, the uniform deposition of Li ion is promoted, so as to improve the cycle stability of battery.The preparation method of the present application is simple, easy to control, green and environmentally friendly, can significantly improve the ion transport kinetics and electrochemical stability of lithium ion battery.

The invention provides a CO2 response type polymer gel channeling sealing system as well as a preparation method and application thereof, and belongs to the field of oil exploitation. The CO2 response type polymer gel channeling sealing system is prepared from the following components in percentage by mass: 0.2 to 1.2 percent of CO2 response type polymer, 0.2 to 1.6 percent of cross-linking agent, 0.1 to 0.5 percent of deoxidant and the balance of water. The CO2 response type polymer gel channeling sealing system provided by the invention can be subjected to cross-linking reaction at the temperature of 110 DEG C, the channeling sealing system can be formed after cross-linking is carried out for 1-3 days, the system can resist the temperature of 150 DEG C and the salt of 200000 mg / L, the channeling sealing effect is enhanced after the system absorbs water and expands after meeting CO2, and the CO2 response type polymer gel channeling sealing system can be applied as a channeling sealing agent or a profile control water plugging agent in oilfield exploitation.

Systems and methods are provided for delivering a therapeutic treatment to a target population of cells (including, but not limited to, tumors, eyeballs, pancreatic tissue, liver tissue, and lung tissue) in a subject. The system includes an injectable aqueous solution in a vial enclosed with a septum. The solution comprises particles containing a therapeutic agent and having a coating surrounding the therapeutic agent, the coating comprising chitosan to provide controlled release of the agent from the particles. The solution also comprises a chitosan polymer in the form of a polymer gel matrix, further providing controlled release of the particles from the aqueous gel environment. There is also provided a method of making a freeze-dried powder placed in a vial containing a chitosan polymer and chitosan-coated particles, the powder when mixed with water forming the above injectable aqueous solution with particles and chitosan gel.

The utility model provides a multifunctional lifting pad for preventing pressure sores and foot drop, which belongs to the field of medical equipment, and comprises an L-shaped lifting pad support, the lifting pad support comprises a lower limb supporting part and a foot supporting part, the lower limb supporting part is connected with the foot supporting part, the front side of the lower limb supporting part is provided with an arc slope, and the arc slope is connected with the lower limb supporting part. A lower limb fixing groove is formed in the lower limb supporting part, a foot fixing groove is formed in the foot supporting part, a heel groove is formed between the lower limb fixing groove and the foot fixing groove, the depth of the heel groove is larger than that of the lower limb fixing groove, and a sole covering sleeve is arranged at one end of the foot fixing groove. According to the lifting pad, the lifting pad support is arranged to be in the L shape, foot drop can be prevented, the lifting pad support is made of polymer gel, pressure sores of lower limbs can be prevented, and meanwhile the lower limbs are lifted to reduce edema.

The application discloses a high-sensitivity bending sensor based on ionic polymer gel and belongs to the technical field of flexible sensors. The high-sensitivity bending sensor based on ionic polymer gel comprises an ionic gel central sensitive layer with a double-network structure and electrode layers attached to surfaces of the ionic gel central sensitive layer in pairs, and the number of pairs of the electrodes is greater than or equal to 1; preferably, the number of pairs of the electrodes is greater than or equal to 2; wherein the ionic gel central sensitive layer is formed into the double-network structure with interwound molecular chains through cross-linking polymerization of monomers of zwitterionic polymers and monomers of flexible polymers. The device disclosed by the application exhibits multi-degree-of-freedom bending characteristics, has high bending response sensitivity and a wide response range, can identify bending directions and amplitudes, and has a wide application prospect in the field of human-computer interaction.

The utility model provides a pharyngeal ice bag, which comprises a middle ice bag containing sleeve bag, which is a rectangular open-top pocket structure, an ice bag is placed in the middle ice bag containing sleeve bag, the inner part of the ice bag is divided into multiple small compartments, each small compartment contains a polymer gel, and a set of elastic fixing belts, which comprises two pairs of elastic connecting belts arranged on both sides of the middle ice bag containing sleeve bag, the outer surface of the left strap of each pair of elastic connecting belts is provided with a Velcro surface, and the inner surface of the right strap is provided with a Velcro hook surface matched with the Velcro surface. The utility model has the advantages that it is used for preventing postoperative hemorrhage of the pharynx and relieving postoperative pain of patients. The utility model solves the problem that the pharyngeal ice bag is not easy to fix, and the method is simple and practical.

The present invention relates to a process for producing color-stable superabsorbent particles, in which an aqueous monomer solution or suspension is polymerized to form a polymer gel, the resulting polymer gel is optionally pulverized, the polymer gel is then dried, the dried polymer gel is optionally ground and classified, and the dried polymer gel is then thermally surface crosslinked and cooled, the process comprising coating with a pyrazole after polymerization.

The invention relates to a magnesium air battery, a magnesium air fiber battery and a preparation method thereof, and the preparation method comprises the following steps: dissolving bis (trifluoromethylsulfonyl) imide magnesium and chlorate in a solvent, then adding a molecular sieve, drying to remove water, and separating the molecular sieve to obtain an electrolyte; adding N-methyl pyrrolidone and poly (vinylidene fluoride-co-hexafluoropropylene) into the electrolyte, adding trimethylolpropane triacrylate as a cross-linking agent, and adding a 2-hydroxy-2-methyl-1-phenyl-1-acetone reagent as an initiator in the stirring process to obtain a polymer gel electrolyte precursor; coating the polymer gel electrolyte precursor on a glass fiber diaphragm, performing ultraviolet curing, and then assembling the polymer gel electrolyte precursor, a magnesium anode strip and a carbon nanotube film cathode to obtain the magnesium air battery. Or coating a magnesium wire with the polymer gel electrolyte precursor, carrying out ultraviolet curing, and then assembling with a carbon nanotube film cathode to obtain the magnesium air fiber battery. The anode corrosion induced by moisture is effectively inhibited in the air, and the charge-discharge reversibility is remarkably improved.

The present invention relates to a high-output DC electric energy generation device using a conductive polymer gel and, more particularly, to a technology for generating DC electric energy using a charge recombination mechanism through contact-separation and sliding methods, wherein a conductive polymer gel including a mixture of PVC and a plasticizer or a mixture of PVDF and an ionic liquid is disposed between upper and lower metal electrodes made of gold or aluminum. The present invention can provide stable and efficient DC power to various applications such as IoT sensors and small electronic devices by optimizing the thickness of the conductive polymer gel, the concentration of the plasticizer, the metal electrode material, and the like. In particular, the present invention can increase power efficiency through charge generation and accumulation processes performed by vertical and horizontal movements of the electrodes.

The invention discloses a self-repairing flexible supercapacitor based on double dynamic bonds and a preparation method thereof, and the method comprises the steps: taking limonene (LIM) and lipoic acid (LA) as monomers, and carrying out one-pot polymerization to form a three-dimensional porous gel network P (LA-LIM) based on the synergistic effect of double dynamic bonds of hydrogen bonds and disulfide bonds; the multifunctional polymer gel P (LA-LIM)-IL with good flexibility, self-healing property and ionic conductivity is prepared by further introducing ionic liquid (ILs), and the flexible symmetric supercapacitor assembled by taking nitrogen-doped porous carbon (N-C) as an electrode shows excellent self-repairing property and environmental adaptability. The method is simple and convenient in process and low in cost, and has important practical value in the field of flexible energy storage devices.

The invention is applicable to the field of environmental protection engineering, and provides sewage treatment equipment for environmental protection engineering, which comprises a horizontal reaction container mounted through a support column positioned at the bottom of the horizontal reaction container, and further comprises a filling layer provided with temperature-sensitive polymer gel and positioned in the horizontal reaction container; the photovoltaic module is mounted at the top of the horizontal reaction container through a bracket, the photovoltaic module comprises two photovoltaic parts which are arranged at the top of the bracket in a sliding manner, and the two photovoltaic parts can synchronously move in opposite directions; and the sensor array is arranged on the horizontal reaction container and the photovoltaic module. The device has the beneficial effects that heat input of solar irradiation to the horizontal reaction container is intelligently regulated and controlled through sliding opening and closing of the photovoltaic component, and a required periodic temperature changing environment is created for temperature-sensitive gel at low cost.

The present application relates to the technical field of inorganic materials, in particular to a preparation method of boron carbide and boron carbide. The preparation method of boron carbide provided by the present application comprises the following steps: reacting polyvinyl alcohol and boric acid in a solvent under the action of an initiator in an environment with pH=7-9 to obtain a boron-containing polymer gel, performing low-temperature calcination on the boron-containing polymer gel at a temperature of 100-200 DEG C after solid-liquid separation to obtain a boron-containing polymer precursor, and then performing high-temperature calcination and deoxidation on the boron-containing polymer precursor at a temperature not lower than 1500 DEG C under the action of a reducing agent. By adjusting the pH value and adding the initiator, the reaction mechanism of boric acid and polyvinyl alcohol PVA is changed, the gel structure is more uniform and stable, the reaction is more sufficient and efficient in combination with the calcination process, the synthesis efficiency of boron carbide is effectively improved, the introduction and residue of impurities are effectively reduced, and the purity and yield of boron carbide can be greatly improved.

The application provides an organic-geopolymer inorganic gel composite coated long-afterglow self-luminous paint and a preparation method thereof, raw materials of the paint include calcined metakaolin, a silicone-acrylate emulsion, an ethylene-vinyl acetate copolymer emulsion and a luminescent powder, and the luminescent powder is an aluminate type long-afterglow luminescent powder. The application adopts an organic-inorganic composite coating design, the calcined metakaolin geopolymer forms an amorphous silicate aluminate gel network through a pozzolanic reaction, the EVA, the silicone-acrylate emulsion and the silane coupling agent are used as the organic phase to effectively fill the internal pores of the geopolymer gel, meanwhile, the flexibility and the anti-cracking performance of the coating are improved, the consumption of natural resources is reduced, and energy saving and environmental protection are realized in the whole cycle of material preparation and application.

The present application relates to the technical field of zinc metal battery, in particular to a multifunctional composite gel electrolyte, its preparation method and application. The present application provides a composite gel electrolyte, which comprises a polymer gel matrix, a zinc salt and a ZnHA filler; wherein the ZnHA filler is a hydroxyapatite material doped with zinc ions. The electrolyte is prepared by polymer dissolution, zinc salt addition, ZnHA dispersion, three-dimensional printing forming, low-temperature gelation and zinc salt solution activation, and has good shear thinning characteristics, self-supporting property and printability. Further, a three-dimensional printed interdigital structure electrode is constructed, and the electrolyte is covered to form an ion transmission channel, and a flexible zinc metal battery is assembled; multiple monomers can be connected in series to increase the output voltage. The flexible battery has excellent ion transmission, cycle stability, flexibility and safety, and can be used in the fields of flexible electronics, wearable devices and intelligent sensing.

The application belongs to the technical field of polymer gels, and discloses a dielectric near-zero polymer hydrogel, a preparation method thereof and a flexible capacitive sensor. The preparation method comprises the following steps: mixing an alcohol solution of a photoinitiator and a crosslinking agent with a monomer solution, ultrasonic dispersion and removal of air bubbles to obtain a precursor solution; photo-curing the precursor solution in a mold to obtain a hydrogel matrix; soaking the hydrogel matrix in an inorganic salt solution with a concentration not less than 1M for a set time, and diffusing ions into the hydrogel matrix to make the hydrogel have a dielectric near-zero. The plasma oscillation is a long-range motion, which is extremely sensitive to the microstructure and morphological changes of the material. Especially in the ENZ state, a small deformation can cause an order of magnitude change in the negative dielectric constant, thereby greatly improving the sensitivity of the capacitive response.

The invention discloses a preparation method of a high-strength heavy metal cured geopolymer based on lead-zinc tailings, and belongs to the technical field of solid waste resource utilization and heavy metal pollution treatment. The lead-zinc tailings, the fly ash, the diatomite and the alkali activator are used as raw materials, and the three action mechanisms of mesoporous adsorption-chemical bonding-structure enhancement of the diatomite are utilized, so that the curing efficiency and stability of heavy metal residues contained in the lead-zinc tailings are improved, and the risk to the ecological environment is greatly reduced; the fly ash is used as a core aluminum-silicon raw material, is rich in active SiO2 and Al2O3, is dissolved under the action of alkali to generate a geopolymer gel skeleton, and is a main source of strength; the lead-zinc tailings serve as an auxiliary silicon-aluminum source and aggregate, part of active ingredients of the lead-zinc tailings participate in the reaction, meanwhile, unreacted particles play a role in filling micro aggregate, and particle composition is optimized; and the alkali activator provides a high-alkalinity environment, aluminosilicate active components in other raw materials are dissolved, and finally the high-strength geopolymer is generated through an alkali excitation reaction.

The present application relates to the field of petroleum aids, discloses a kind of hydrophobic monomer and its preparation method, polymer gel and its preparation method and application and plugging material and application.The structure of the hydrophobic monomer is as shown in formula (I):In formula (I), R 1 , R 2 And R 3 Each independently is H or C1-C 18 Alkyl;M1, M2 and M3 are each independently selected from H, Na, Li or K;N, m and z are each independently an integer of 0-6.Polymer gel containing structural unit from the hydrophobic monomer of the present application in the present application has good water dilution resistance and temperature and salt resistance.

The invention discloses a polymer gel particle applied to an electrochemical device and the electrochemical device, the crosslinking degree of the polymer gel particle is represented by a, the porosity is represented by b, and a and b satisfy 0.02 < = a * b < = 0.09. The polymer gel particles are used in an electrochemical device, the electrolyte retention capacity of a battery cell component is improved, and an active layer, a coating and a packaging film gel layer of the polymer gel particles are doped in each component of a battery cell, so that the polymer gel particles have excellent mechanical strength.

The invention discloses a polymer gel profile control and displacement system and a preparation method thereof, and belongs to the technical field of chemical oil displacement. The profile control and flooding system is prepared by the following method: reacting methyl allyl polyoxyethylene ether with 4-(2-bromoethyoxyl) benzaldehyde to obtain a functional monomer containing an aldehyde group; polymerizing a functional monomer containing an aldehyde group and acrylamide to obtain a polymer rubber block, hydrolyzing the rubber block, continuously drying, and crushing to obtain dry polymer powder containing the aldehyde group; and mixing the dry powder with a multi-primary amine compound cross-linking agent according to a mass ratio of 1: 0.6-1: 1 to form a polymer gel profile control and flooding system with good salt tolerance. In the profile control system disclosed by the invention, polymer gel with higher cross-linking strength can be formed between the aldehyde group-containing polymer and the multi-primary amine compound under the dual action of primary amine, the aldehyde group and the amide group; the gel formed by the aldehyde group-containing polymer and the multi-primary amine compound has better salt tolerance.

The invention relates to water soluble crosslinkable prepolymers for the preparation of chemically stable crosslinked polymer gels, a process for preparing the same, compositions containing the same and their use such as a medical or dental filler composition.

The invention provides a quasi-solid-state negative-electrode-free sodium metal battery and a preparation method thereof, and belongs to the technical field of sodium metal batteries. Comprising a composite positive electrode, a quasi-solid electrolyte and a negative electrode current collector without an active substance, and the composite positive electrode provides a sodium source and comprises the active substance, a conductive carbon material and a binder; the quasi-solid electrolyte is polymer gel formed by a compound of an ether polymer, a sodium salt and a chain ether solvent. The specific energy density of the quasi-solid negative-electrode-free sodium metal battery exceeds 180 Wh kg <-1 >, use of flammable and volatile liquid electrolyte and metal sodium is avoided, safe production and stable circulation can be achieved, and the quasi-solid negative-electrode-free sodium metal battery shows more excellent comprehensive performance in the field of negative-electrode-free sodium batteries.

The present application relates to a method for simultaneously achieving defect passivation and room temperature encapsulation of perovskite solar cells by organic silicon polymer structure regulation, first, a telechelic organic silicon polymer is synthesized, and the polymer is introduced into the perovskite light absorption layer by anti-solvent method to achieve defect passivation. In addition, the organic silicon polymer is prepared into a polymer gel by condensation reaction, and the room temperature rapid cross-linking and curing of the polymer gel realizes the encapsulation of the perovskite cell. In practical application, it is found that the efficiency of the perovskite device based on the organic silicon polymer modification before encapsulation can reach 23.8%, and the efficiency loss of the encapsulated perovskite device is ≤1%. At the same time, the encapsulated device runs for 1000 hours under the maximum power point tracking of 50-60 DEG C, and keeps 92%-95% of the initial efficiency. The strategy has great commercialization prospect, and is helpful to further promote the wide application of perovskite photovoltaic equipment.

The present invention relates to particles comprising a magnetic core coated in a polymeric gel, methods of making such particles, and methods of using such particles, for example to support both chemical and biological synthesis.

The invention provides an in-situ gel polymer electrolyte for a zinc ion battery and a preparation method and application of the in-situ gel polymer electrolyte, and belongs to the technical field of conductive materials.The preparation method comprises the steps that a carboxyl-containing polymer gel material, an acrylamide monomer, a photoinitiator, a cross-linking agent and a zinc salt solution are mixed to form a precursor solution; performing super-hydrophilic treatment on the surface of the zinc metal to obtain super-hydrophilic zinc metal, and pouring the precursor solution on the surface of the super-hydrophilic zinc metal to enable the precursor solution to be super-spread and form a precursor solution liquid film; and carrying out ultra-spreading of the precursor solution while carrying out ultraviolet irradiation, so that a liquid film of the precursor solution is subjected to in-situ gelation polymerization on the surface of the super-hydrophilic zinc metal to obtain an in-situ gel polymer electrolyte, and loading the in-situ gel polymer electrolyte on the surface of the zinc metal to obtain the in-situ gel polymer electrolyte. Chemical bonds formed by zinc and functional groups in the in-situ gel polymer electrolyte exist between the gel-zinc metal surface.