200 results about "Gel forming" patented technology

The invention discloses a gel composition for improving compatibility and gelling speed of a tooth whitening product. The gel composition comprises whitening gel and a catalyst, respectively filling the whitening glue and the catalyst into a double-barrel injector; when the tooth whitening gel is used, the push rod is pushed, the whitening gel and the catalyst in the double-tube barrel are squeezed out at the same time and mixed at the mixing head to form the tooth whitening gel capable of being smeared on the tooth surface of a patient, and the pH value of the tooth whitening gel is 7.5-10.0. The catalyst comprises potassium salt or strontium salt, sodium fluoride, glycerol, cross-linked polyacrylamide gels, strong alkaline substances, essence and water; the whitening gel comprises a hydrogen peroxide solution, a cross-linked polyacrylamide gel, glycerin, essence and water. The cross-linked polyacrylamide gel is adopted, the gel is resistant to strong-alkalinity and high-pH environment and various inorganic salt ions such as fluoride, sylvite or strontium salt, the prepared gel is stable in form and good in compatibility, the gel preparation process is simple, the gel is rapidly swelled when encountering water and does not huddle, and long-time standing is not needed.

The invention discloses a composite hydrogel adsorbent and a preparation method and application thereof, and belongs to the technical field of wastewater treatment.The preparation method comprises the specific steps that S1, neutralized acrylic acid, acrylamide and a cross-linking agent are added into deionized water and stirred to be uniform, and a precursor solution is obtained; s2, adding alkali-activated fly ash into the precursor solution, uniformly mixing, sequentially adding alkali liquor and an initiator, and fully stirring for reaction to obtain a mixed solution; and S3, curing the obtained mixed solution in a mold, washing with water, and drying to obtain the composite hydrogel adsorbent. According to the invention, the reaction system is optimized, so that the super-fast polymerization curing of the hydrogel is realized; the prepared composite hydrogel has excellent mechanical property and metal ion adsorption property; the whole preparation process is simple to operate, high in gel forming speed, free of light / heat initiation, mild in condition and low in cost, and can be applied to adsorption of heavy metal ions in wastewater.

The invention provides a polyethylene glycol derivative-collagen cartilage repair gel which is characterized by being prepared from the following components in parts by weight: 8 to 12 parts of collagen (namely COL) solution, 0.5 to 2 parts of polydeoxyribonucleotide (namely PDRN), 4 to 8 parts of polyethylene glycol disuccinimide succinate (namely SS-PEG-SS) solution and 0.1 to 0.4 part of tannic acid (namely TA), and particularly discloses a preparation method and application of the polyethylene glycol derivative-collagen cartilage repair gel. In a word, the composite gel and the collagen are subjected to efficient amidation reaction through SS-PEG-SS to form a stable three-dimensional network, so that the structural support of the type I collagen, the tissue repair of PDRN and the anti-inflammatory and anti-oxidation characteristics of tannic acid are successfully integrated; therefore, the composite material has the comprehensive performance of good structural stability, high mechanical strength, good biocompatibility, controllable degradation period, excellent needle passing performance and the like, and shows the wide application prospects of clear repair effect, remarkable component synergistic effect, mature production process, outstanding cost effectiveness and the like.

The invention belongs to the technical field of medical biological materials, and particularly relates to a sodium hyaluronate gel regeneration filler for injection and a preparation method and application thereof.The sodium hyaluronate gel serves as a carrier to disperse acellular matrix particles, the sodium hyaluronate gel forms a micron-sized porous structure in the cross-linking process through a microbubbling technology, and the sodium hyaluronate gel is prepared into the sodium hyaluronate gel regeneration filler for injection and the preparation method and application of the sodium hyaluronate gel regeneration filler. A local cross-linked network is strengthened by combining a secondary cross-linking process, high elastic modulus is realized while the content of sodium hyaluronate is reduced, so that the porous structure has excellent instant filling and shaping capability and controllable degradation behavior, the porous structure can promote permeation of hyaluronidase, the degradation period of the hyaluronidase is matched with the tissue regeneration process, and the tissue regeneration effect is improved. And the acellular matrix particles can continuously induce adhesion, migration, proliferation and differentiation of endogenous cells of tissues, synergistically promote in-situ tissue regeneration, effectively reduce repeated injection requirements and reduce long-term complication risks, and have a good application prospect in soft tissue filling and repairing.

The invention discloses a novel rotating wheel with dual functions of deodorization and dehumidification. The novel rotating wheel comprises a honeycomb base body formed by overlapping and rolling glass fiber paper corrugated sheets and flat sheets, a silica gel main framework layer covering hole walls, and a deodorization function layer fixed on the surface of the silica gel main framework layer. The silica gel main framework is prepared from water glass through carbon dioxide pressurization gel forming, acid aging, graded drying and calcination, and is uniform in structure and high in strength. The deodorization function layer is composed of modified silicon dioxide particles and a rare earth or transition metal complexing stable center, and a stable chemical bonding interface is formed. The rotating wheel has efficient dehumidification and peculiar smell adsorption capacities, and is small in airflow resistance and good in circulation stability.

The invention discloses a methane dry reforming catalyst and a preparation method thereof, and belongs to the technical field of catalysts.The catalyst is composed of 480 parts to 600 parts of Fe2O3, 60 parts to 75 parts of NiO, 1020 parts to 1530 parts of Al2O3, 16.2 parts to 82.5 parts of La2O3 and 9 parts to 18 parts of Gd2O3, and the catalyst is of an integral aerogel structure with a honeycomb-shaped or latticed macroscopic morphology; the preparation method comprises the following steps: S1, preparing a precursor solution; s2, adding a gel accelerant; s3, carrying out integral gel forming; s4, aging the wet gel; s5, solvent replacement; s6, performing supercritical drying; s7, calcining; according to the invention, active site design, a structure stabilization strategy and material form innovation are closely combined, and the prepared monolithic aerogel oxygen carrier not only shows a high CH4 / CO2 conversion rate and an ideal H2 / CO ratio, but also has excellent cycle stability and extremely low bed pressure drop; the core problems that in the prior art, the activation capacity and the carbon removal capacity are not matched, the high-temperature cycling stability is poor, and the engineering applicability of a powder material is limited are effectively solved.

The present application relates to the field of profile control and water plugging in oilfield water injection development, and discloses a polyacrylamide copolymer, a preparation method thereof, a profile control and flooding movable gel and application. The polyacrylamide copolymer contains a structural unit shown in formula (1), a structural unit shown in formula (2) and a structural unit shown in formula (3); wherein R is C4-C10 alkyl, n is an integer of 6-15, and M is a metal element; the profile control and flooding movable gel formed by the acrylamide copolymer can enter the deep part of an oil reservoir, has a relatively high viscosity under high-temperature and high-salt conditions, can reduce the oil-water surface interfacial tension, is suitable for being used as a profile control and flooding agent and a profile control and plugging agent in a high-permeability oil reservoir (permeability is higher than 2000 mD), has a relatively high plugging rate and has good emulsifying performance.

The application discloses a precision hardware fatigue damage detection method and system, and relates to the field of precision mechanical detection.The method comprises the following steps: coupling a flexible impedance sensing array with a precision hardware to be detected; the array substrate is made of polydimethylsiloxane, and the surface array groove is filled with a conductive hydrophilic composite gel formed by in-situ polymerization of acrylamide monomer, sodium alginate and nanometer carbon fibers, thereby forming a plurality of miniaturized impedance units; a constant pressure is applied through a pressure feedback control system, so that the gel produces elastic deformation to cover and compensate the micron-level roughness of the surface of the detection area; a micro-amplitude sinusoidal voltage excitation is applied, current response data in the swept frequency band is collected, complex impedance information is extracted and fitted to a randall equivalent circuit model, and charge transfer resistance and interface capacitance values are obtained; and the parameter deviation degree is calculated according to the charge transfer resistance of the current detection period and historical reference, so as to determine the fatigue damage condition of the local area.

The present application relates to the field of profile control and water plugging in oilfield water injection development, and particularly relates to an acrylamide polymer, a preparation method and application thereof. The polymer contains structural unit A, structural unit B and structural unit C, wherein the structural unit A has a structure shown in formula (1), the structural unit B has a structure shown in formula (2), and the structural unit C has a structure shown in formula (3); wherein R is C5-C12 alkyl, and n is an integer of 8-12. The movable gel formed by the acrylamide polymer has high viscosity under high temperature and high salt conditions, can enter the deep part of the oil reservoir, and can reduce the oil-water surface interfacial tension, has good emulsifying performance, is suitable for being used as a profile control and displacement agent and a profile control and plugging agent in a high-permeability oil reservoir (permeability is higher than 2000 mD), and has high plugging rate.

Disclosed are cleanser formulations in a gel form including a fatty acid salt as the primary cleansing agent. The cleanser formulations have a pH ranging from 6-11. The cleanser gels can contain at least 90 weight percent of natural or naturally derived ingredients.

The invention discloses a potato protein with good emulsibility, gelling property and foamability, and belongs to the fields of biology and genetic engineering. According to the invention, the designed potato protein realizes recombinant expression in pichia pastoris, and it is verified that the recombinant expressed protein can form a secondary structure and can form hydrogel at a concentration of 60 g / L. The invention also provides an application of the prepared potato protein as a food additive, shows emulsifying and gelling capabilities superior to those of commercial potato protein, and has huge value and potential in the fields of food and tissue engineering.

Silk protein-based composite, vehicle seat, and associated manufacturing method. The present invention relates to a composite complex (10) comprising at least one substrate layer (20) and at least one coating layer (30) applied to the substrate layer (20), the substrate layer (20) being a fabric. The coating layer (30) is a gel formed from silk proteins, the silk proteins being obtained by fermentation of at least one microorganism in a liquid medium. Figure for the abstract: Figure 1

The application relates to the technical field of building materials, in particular to a cementing material for preparing an assembled wall body from multiple solid wastes and a preparation method; the cementing material is prepared from 25-55 parts of fly ash, 25-65 parts of blast furnace slag, 8-10 parts of lime, 1-5 parts of desulfurization gypsum, 3-6 parts of a first mixture, 2-5 parts of a second mixture and 5-8 parts of an alkali activator; the mass ratio of metakaolin, bentonite and superfine calcium carbonate in the first mixture is 3:2:1; the mass ratio of vermiculite, expanded perlite and glass beads in the second mixture is 2:2:1. The cementing material has a more stable microstructure through the synergistic activation of Ca and Na, and the addition of the first mixture and the second mixture. 2+ and Na + The C-S-H and C(N)-A-S-H gels form a three-dimensional network, needle-shaped ettringite crystals fill pores, and the anchoring effect of brucite phase is combined, so that the mechanical properties, such as strength and durability, of the material are significantly improved.

The invention discloses a preparation method of natural polysaccharide-based organic / inorganic hybrid photo-thermal antibacterial hydrogel, which comprises the following steps: 1) mixing and dissolving methacrylated gelatin, hydroformylated sodium alginate, tannic acid and a photoinitiator in a phosphate buffer solution to obtain a solution A; 2) dissolving carboxymethyl chitosan in a phosphate buffer solution to obtain a solution B; 3) adding a gold nanorod aqueous dispersion into the solution B to obtain a solution C; the volume ratio of the gold nanorod aqueous dispersion to the solution B is (1.5: 1)-(2: 1), the length of the gold nanorod is 30-70nm, and the width of the gold nanorod is 5-10nm; 4) blending the solution A and the solution C, and injecting to obtain a network hydrogel I; and 5) carrying out ultraviolet irradiation crosslinking on the hydrogel I to obtain the dual-network hydrogel II. The antibacterial hydrogel can be formed in a mold with a complex shape, in-situ injection photo-crosslinking gel forming can be carried out, a photo-thermal heating effect under near-infrared light irradiation can be achieved, and the range required by photo-thermal antibacterial can be reached.

An X-ray detector can incorporate an aerogel insulator that encloses one or more thermoelectric coolers (TECs) and sensors of the X-ray detector to provide insulation instead of vacuum encapsulation. The aerogel insulator can be poured in gel form into an assembled X-ray detector to encase components such as the TEC, wire connections, amplifiers, and possibly the sensor, and then dried to form the aerogel insulator.

The invention belongs to the technical field of biomedical material engineering, and discloses a hydrogel scaffold used for 3D tumor sphere culture and drug screening, the scaffold is formed by four-arm polyethylene glycol maleimide, fibrinogen and thrombin through Michael addition crosslinking and biopolymerization synergistically, the elastic modulus of 10-1000 Pa can be adjusted by regulating and controlling the proportion of all the components, and the hydrogel scaffold can be used for 3D tumor sphere culture and drug screening. Gel forming is completed within 5 min at the room temperature. The scaffold has the biological activity of fibrous protein and the structural stability of polyethylene glycol, can efficiently support HCT116 cells to form high-activity tumor balls, accurately simulate the in-vivo tumor microenvironment and remarkably improve the accuracy and repeatability of drug screening, is easy and convenient to operate, is compatible with a standard pore plate high-throughput platform and is suitable for drug sensitivity detection of personalized treatment of tumors.

This invention relates to the field of polymer composite materials technology, and discloses a material and manufacturing process for resistance to damage and staining. The manufacturing process includes: weighing unsaturated polyester resin, aluminum hydroxide and / or magnesium hydroxide, quartz powder and / or calcium carbonate, organically modified montmorillonite, ammonium polyphosphate crystal form II, and anhydrous calcium borate according to the formula, mixing them to form a homogeneous slurry, then casting it into a gel mold, and finally curing and demolding it to obtain the product. This invention uses high aspect ratio organically modified montmorillonite sheets to fill the micropores on the surface of the product, and uses anhydrous calcium borate to replace zinc borate containing crystal water to eliminate pores during the curing stage. The two work synergistically to reduce surface porosity and achieve long-lasting stain resistance; using extremely low water solubility ammonium polyphosphate crystal form II to replace water-soluble phosphates ensures long-term stable flame retardant performance and batch consistency; the absence of anhydrous calcium borate eliminates interference with curing accelerators, resulting in stable molding quality; and each flame-retardant component takes effect sequentially in the low-temperature, medium-temperature, and high-temperature ranges, forming continuous flame-retardant protection across the entire temperature range.

A flexible energy storage device with a glycerol-based gel electrolyte is provided. The flexible energy storage device can include a pair of electrodes separated by the gel electrolyte. The electrolytes can be in gel form, bendable and stretchable in a device. The gel electrolyte can include glycerol, redox-active molybdenum-containing ions, and a secondary ionic substance. The secondary ionic substance can include a salt. The gel electrolyte can have a density of 1.4 to 1.9 g / cm3 and an ionic conductivity of 2.3×10−4 to 3.2×10−4 Scm−1. The flexible energy storage device may retain greater than 95% of an unbent energy storage capacity when bent at an angle of 10 to 170°.

The invention discloses a method for preparing silk fibroin and hyaluronic acid composite gel, which comprises the following steps of: uniformly mixing hyaluronate with a first solvent to prepare hyaluronic acid gel, mixing the hyaluronic acid gel with a silk fibroin solution, shearing at a high speed, homogenizing and emulsifying, standing, shearing at a high speed, homogenizing and emulsifying, sealing and sterilizing to obtain the silk fibroin and hyaluronic acid composite gel. According to the method disclosed by the invention, reagents such as a cross-linking agent, an initiator and enzyme do not need to be additionally added; the silk fibroin solution and the hyaluronic acid gel can form uniform and mutually-crosslinked double networks in the homogeneous gel forming process, the phase separation risk is low, and the silk fibroin can generate an emulsion reaction through high-speed homogenization, so that the color of the composite gel is whiter; the preparation method disclosed by the invention is simple, rapid in emulsification and gel forming, short in production cycle, low in endotoxin of the product, high in biocompatibility, slow in degradation, small in inflammatory response and high in injection filling safety, and the composite gel can play a role in moisturizing and moisturizing after subcutaneous injection and has the whitening effects of improving skin elasticity and glossiness, fading fine wrinkles and the like.

The invention relates to the technical field of medicine and health-care food processing, and discloses a preparation process of ganoderma lucidum spore powder with synergistic refined activity release and targeted absorption, the composition is prepared from wall-broken ganoderma lucidum spore powder, starch sodium octenylsuccinate, superfine calcium carbonate, gluconic acid-delta-lactone, sodium alginate and sodium citrate, and has a core-shell structure, the shell layer is interpenetrating network gel formed by calcium ion in-situ crosslinking. The preparation process comprises the steps of solid-phase mechanochemical interface modification, component space pre-arrangement, low-temperature low-surface tension bonding liquid preparation, high-shear latency wetting and fluidized bed thermal triggering and gradient curing. According to the invention, a compact acid-resistant protective layer is constructed through solid-phase interface anchoring and thermal triggering crosslinking technologies, and the problems that wall-broken spore powder is easy to oxidize and rancidify and active components are inactivated in gastric acid are solved. The obtained product has low surface oil content and high embedding rate, stomach protection and intestinal targeted release of active components are realized, and bioavailability is remarkably improved.

The invention provides a secondary battery, an electric device, and a liquid retention polymer for a battery. The secondary battery includes a gel composed of a liquid-retaining polymer and at least a portion of an electrolyte, the liquid-retaining polymer including a structural unit represented by formula (I), a structural unit represented by formula (II), and a structural unit derived from a monomer (III), the structural unit derived from the monomer (III) is selected from one or more of a structural unit derived from a monomer with an olefinic nitrile group, a structural unit derived from a monomer with an amide group, a structural unit derived from a monomer with a sulfonate radical and a structural unit shown in a formula (IV), in the formula (IV), R10 is hydrogen or C1-C6 alkyl, R11 is C1-C6 alkyl or (methyl) acryloyl, and p is 3-50. The secondary battery provided by the invention has excellent cycle performance and dynamic performance.

The invention belongs to the technical field of aerogel preparation, and relates to a method for preparing ultrathin aerogel by supercritical drying of carbon dioxide, which comprises the following steps: preparing a basic catalytic liquid, preparing silica sol, forming and aging ultrathin wet gel, performing surface modification, pretreating a drying system, performing limited loading and sealing, performing flexible gradient replacement and drying, and performing gradient depressurization and material taking. According to the method, limited loading is carried out by introducing a breathable constraint clamp, and a segmented gradient pressure increasing and decreasing carbon dioxide supercritical drying process introduced at an initial low speed is matched, so that macroscopic curling deformation caused by internal stress release of the ultrathin sample is forcibly eliminated; the mechanical damage of turbulent shearing to a fragile film skeleton is effectively avoided by utilizing fine fluid control of slow starting and quick rising, and meanwhile, the preparation period is remarkably shortened by utilizing the quick mass transfer characteristic of an ultrathin sample; the prepared aerogel film is high in flatness, free of macroscopic curl, complete in structure and free of cracks, and is suitable for the fields of flexible heat insulation and precision optics.

The invention provides a preparation method of composite aerogel, the composite aerogel, a thermal management system and a battery, and relates to the technical field of batteries. According to the specific technical scheme, fiber gel and organic sol are provided, wherein the fiber gel comprises silicon-based gel and a fiber matrix; coating the organic sol on the outer surface of the fiber gel body to obtain a composite gel body; drying the composite gel to obtain a composite material, forming silicon-based aerogel from the silicon-based gel, and forming fiber aerogel from the fiber gel; finally, carbonizing the composite material to obtain composite aerogel, and forming carbon aerogel from the organic sol; the composite aerogel prepared by the method not only has synergistic heat insulation and heat conduction functions, but also has a relatively stable structure, and can be applied to a battery as a thermal protection material so as to improve the overall safety of the battery.

A method for making an encased vegetable based jerky includes the steps of: hydrating a texturized vegetable protein mixture to form a fibrous mass; hydrating a gel forming vegetable protein isolate to form a protein gel; mixing the protein gel with the fibrous mass to form a mixed mass; extruding the mixed mass into a casing to form a cased mass; and cooking and drying the cased mass to form encased vegetable based jerky. The encased vegetable based jerky includes: a three-component protein mix including a textured long fiber vegetable protein, a textured short fiber vegetable protein, and a gel forming vegetable protein isolate, the three-component protein mix forming a plurality of protein clusters dispersed in the meat analogue; psyllium husk; and a casing enclosing the three-component vegetable protein mix wherein the casing is substantially free of breaks or delaminated portions, wherein the encased vegetable based jerky is substantially free of added vegetable oil.

The invention relates to the technical field of konjak gel finished product monitoring, in particular to a konjak gel forming and finished product monitoring system, comprising: a heating and stirring assembly comprising a main stirring kettle, a stirring part arranged in the main stirring kettle and a temperature control module arranged on the stirring part; the particle forming assembly comprises an extrusion part connected with the main stirring kettle, a cutting part arranged on the extrusion part and a control part arranged on the cutting part, and the control part is used for controlling the size of the cut gel particles; and the carbon dioxide drying and collecting assembly is connected with the control part, so that the device can uniformly adjust the shape of each gel particle, and the shape and the weight of each gel particle finished product are kept in a stable mass interval.

This invention relates to an additive manufacturing method for strain rate-enhanced composite gels, comprising: a) polymerizing silicone oil, boric acid, and octanoic acid at high temperature to prepare a shear-hardening gel; b) introducing the shear-hardening gel into a polyvinyl alcohol aqueous solution and adding chitosan particles, followed by ball milling to obtain a composite gel precursor; c) printing the composite gel precursor using pneumatic extrusion combined with a triaxial motion control system, and then obtaining the composite gel through freeze-thaw treatment. This composite gel precursor is propelled from the nozzle by air pressure in a pneumatic extruder, and the triaxial motion control system enables the deposition of arbitrary two-dimensional patterns and the stacking of three-dimensional structures, overcoming the limitations of traditional strain rate-enhanced composite gels formed by molding and injection molding methods, and endowing it with greater molding freedom and higher molding precision in additive manufacturing.

The invention belongs to the field of biomedical materials, and provides complex silver antibacterial gel and a preparation method thereof. Lithium magnesium sodium silicate is adopted for self-assembly to construct a first network, N, S double-coordination modified sodium carboxymethyl cellulose cooperates with acrylamide and optional N-vinyl imidazole for photo-initiation polymerization to form a second network, and double-network interpenetration is combined with a silver complex formed by complexing a water-soluble cyanurate complexing agent and silver nitrate. By utilizing the design of imidazole and sulfydryl multi-coordination site fixed complex silver, the performance that the daily mean value of the steady-state concentration of silver ions is maintained at 10-40 micrograms per liter under the conditions that the gel forming time is less than or equal to 120 seconds, the light transmittance is greater than or equal to 80% and the wet gel solid content is 8-25 wt% is realized; the contradictions of low-viscosity rapid gelling and silver complex rheological thickening, high transparency and low solid content and ligand-enriched silver cluster scattering, soft moisturizing matrix and sterilization storage stability, strong complexing silver locking and steady-state silver releasing window coupling and the like are solved, and the wide wound dressing application value is achieved.

The application discloses a kind of collagen Pickering emulsion 3D printing-based cartilage regeneration scaffold and preparation method thereof.Collagen is extracted from fresh collagen extraction raw material, and purified collagen sponge is obtained, the collagen sponge is dissolved in acetic acid, and high-concentration collagen solution is obtained, then oil phase is added to the collagen solution, and high-speed emulsification is carried out using high-speed homogenizer, to obtain collagen-based Pickering emulsion, finally, computer digital modeling and low-temperature hydrogel forming equipment are used, and collagen-based Pickering emulsion is used as biomaterial ink to 3D print cartilage regeneration hydrogel scaffold, the printed scaffold is quickly frozen in liquid nitrogen, and vacuum drying is carried out, to obtain cartilage regeneration scaffold.The application develops collagen Pickering emulsion biomaterial ink with excellent printability, and through 3D printing, collagen-based cartilage regeneration scaffold with good quick customization forming property, adjustable pore structure and good biological activity is obtained.

The present invention relates to a composite laminate (10) comprising at least one substrate layer (20) and at least one coating layer (30) applied on top of the substrate layer (20), said substrate layer (20) being a fabric. The coating layer (30) is a gel formed from silk proteins, the silk proteins being obtained by fermentation of at least one microorganism in a liquid medium.

The invention discloses a soluble microneedle patch for skin tumors and a preparation method and application thereof, and belongs to the technical field of soluble microneedles, gel formed by a microneedle matrix which is excellent in biocompatibility and contains disulfide bonds is injected into a microneedle mold, and the soluble microneedle patch is prepared. Then vacuumizing, centrifuging, adding viscous microneedle substrate polyacrylic acid gel, and drying to obtain the specific soluble microneedle patch of which the dissolution rate in a tumor microenvironment is obviously higher than that of normal tissues. The microneedle matrix with disulfide bonds specifically responds to the high reducibility of a tumor microenvironment, the drug is rapidly broken and released, the drug release amount in a normal skin area is reduced, stimulation to healthy tissue is avoided, potential damage to normal tissue is reduced, and more accurate targeted therapy is achieved.