29results about How to "High viscoelasticity" patented technology

The chitosan hydrogel disclosed by the invention is prepared from the following components in parts by weight: 6 to 15 parts of carboxymethyl chitosan, 0.4 to 1 part of a cross-linking agent and 300 to 900 parts of water. The invention belongs to the technical field of polymer hydrogel, and particularly relates to chitosan hydrogel and a preparation method thereof, the prepared chitosan hydrogel is low in toxicity and safer, a low-temperature and high-temperature step-by-step cross-linking product is adopted, compared with a one-step cross-linking product, the residual amount of a cross-linking agent is lower, a chitosan solution and the cross-linking agent react slowly under the low-temperature condition, and the cross-linking effect is good. The mixing is more sufficient under a liquid condition.

The invention belongs to the technical field of viscoelastic coatings, and particularly relates to a viscoelastic functional composite material, a viscoelastic coating, a viscoelastic diaphragm, a preparation method of the viscoelastic diaphragm and a lithium ion battery. The viscoelastic functional composite material provided by the invention comprises a chemically modified and coated viscoelastic material and a water-based adhesive, the shell layer of the chemically modified and coated viscoelastic material is a pressure-sensitive material, and the core of the chemically modified and coated viscoelastic material is a macromolecular viscoelastic material; the dry weight of the water-based adhesive accounts for 1-10% of the dry weight of the chemically modified and coated viscous-elastic material by mass. The viscoelastic functional composite material provided by the invention can effectively improve the viscoelasticity of the diaphragm in the Z direction, improve the overall compression resilience and bonding characteristic of the diaphragm, and can bond the diaphragm and a pole piece into a whole, thereby improving or solving the problem of expansion and shrinkage of a silicon-based negative electrode lithium battery in work, and improving the service life of the lithium battery. The stability of the shape and size of the battery is maintained, the interface is improved, and the high-energy-density silicon-based negative electrode is assisted to be applied to power and energy storage batteries on a large scale.

This invention provides a high-hygroscopic, water-free composite gel-type calcium and magnesium salt tablet and its preparation method, which is made from the following raw materials in parts by weight: 45-70 parts calcium and magnesium salt, 15-25 parts gum arabic, 3-15 parts mica powder, 2-12 parts polyethylene oxide, 0.5-2 parts sodium nitrite, and 2-30 parts gelatin. This tablet exhibits high hygroscopicity and excellent physical properties.

The application discloses an impact-resistant high-thermal-conductivity polyphenylene sulfide composite material and a preparation method thereof, and relates to the technical field of plastic processing. The preparation method comprises the following steps: S1, preparation of a highly oriented PPS fiber insert; and S2, preparation of the impact-resistant high-thermal-conductivity PPS composite material. The application provides an impact-resistant high-thermal-conductivity PPS composite material and a preparation method thereof. Firstly, the viscoelasticity of PPS resin is improved by using high-melt-viscosity and high-temperature-resistant aromatic polyamide, the interfacial compatibility of PPS / aromatic polyamide is enhanced by using a functionalized polysulfone-based resin as a compatibilizer, so that the stretchability and the tensile orientation degree of PPS are improved; PPS composite fibers are obtained by using a melt spinning machine, and a fiber solid-phase high-multiple-stretching-annealing forming process is established, so that the high-toughness and highly oriented PPS composite fiber material is obtained.

This application belongs to the field of lithium battery technology, and particularly relates to a lithium battery ceramic separator adhesive, its preparation method, and a lithium battery. The lithium battery ceramic coated separator adhesive includes a core layer and a shell layer. The shell layer is a copolymer of alkyl acrylate and acrylate polyacrylate with a mass ratio of 1:1 to 3. The glass transition temperature is about -10℃ to -30℃. It is in a glassy state at room temperature and has good viscoelasticity. It can effectively bond the positive and negative electrode sheets and the battery ceramic separator at room temperature after conventional pressing. The positive and negative electrode sheets and the battery ceramic separator are difficult to peel off or move. This solves the technical problem in the prior art that the bonding effect of lithium battery ceramic separator adhesive at room temperature is poor and the electrode sheets and separator are prone to displacement.

The invention discloses an injectable hydrogel pharmaceutical composition for an articular cavity as well as a preparation method and application of the injectable hydrogel pharmaceutical composition. The hydrogel pharmaceutical composition comprises gel particles and a medicine loaded in the gel particles, the gel particles are formed by cross-linking hyaluronic acid or salt thereof and silk fibroin through a cross-linking agent; the medicine comprises an anti-inflammatory drug and / or a growth factor. The preparation method is simple, good in safety and beneficial to industrial production. The uniform porous structure of the hydrogel is beneficial to adhesion and growth of bone cells, meanwhile, the double-load hydrogel loaded with the anti-inflammatory drug and the growth factor has good viscoelasticity and injectability and has the effects of synergistically resisting inflammation and promoting cartilage repair, and bone joint related diseases are treated in a bone joint intracavity injection mode; the drug residence time can be prolonged, and the bioavailability is improved.

The present invention discloses a small-particle agarose gel, a preparation method and application thereof, and belongs to the field of medical cosmetology and biomedical technology. The agarose gel of the present invention is prepared by the following method: non-crosslinked agarose microspheres, a crosslinking agent and a dispersant are mixed, an alkaline solution is added, and non-static crosslinking is performed at 55 to 65° C. The crosslinking time is 7 to 15 hours. After the crosslinking is completed, the agarose gel is washed to obtain the agarose gel. The agarose gel prepared by the present invention has a small particle size, low residue, soft texture, good viscoelasticity, and good biocompatibility. Therefore, it can be prepared into a cosmetic injection for facial filling plasticity to increase the cosmetic effect, and has broad application prospects.

The present invention discloses a preparation method and application of a MXene-poly eutectic-based conductive elastomer, comprising the following steps: preparing a clear, transparent, and performance-adjustable polymerizable eutectic solvent ternary system by a "one-pot method" by mixing a hydrogen bond acceptor choline chloride with a hydrogen bond donor acrylic acid and acrylamide; further adding a two-dimensional monolayer Ti3C2T x The nanosheets obtain a prepolymer solution of a multi-hydrogen bond network, and finally, under ultraviolet light initiation conditions, in-situ photopolymerization is performed to obtain a MXene / poly eutectic self-healing conductive elastomer. The preparation process of the present invention is simple, efficient, and green, and reduces the production cost of the material and the complexity of the process technology. The present invention improves the conductivity and strain sensitivity of the elastomer, enriches the hydrogen bond network composition in the conductive elastomer, and ensures the room temperature self-healing properties of the conductive elastomer. The conductive elastomer prepared by the present invention can be used for strain sensing detection for monitoring different human activities.

The invention belongs to the technical field of oil-gas field development, and relates to a CO2 slow response type gel for an ultra-high-temperature oil reservoir and a preparation method of the CO2 slow response type gel. The invention relates to a CO2 slow response type gel for an ultra-high temperature oil reservoir. The CO2 slow response type gel comprises an anionic surfactant, a cross-linking agent, a thiourea auxiliary agent and water. The CO2 slow response type gel for the ultra-high-temperature oil reservoir is relatively low in viscosity before being in contact with CO2, and can be well injected into a deep stratum, so that the swept area is enlarged; and after CO2 is introduced, at the temperature of 140 DEG C or above, after 5 hours, cross-linking is performed to form a three-dimensional network structure, the volume expansion viscosity is increased, and good viscoelasticity is achieved, so that the stratum is better blocked.

The invention relates to the technical field of biological polysaccharide cross-linking agents, in particular to application of a diaminodiketopiperazine compound, and the diaminodiketopiperazine compound is used as a cross-linking agent in the preparation process of cross-linked biological polysaccharide gel. The diaminodiketopiperazine compound is a compound with a structure shown as a formula I or a pharmaceutically acceptable salt thereof: # imgabs0 #, wherein R is normal alkyl or isoalkyl with the carbon atom number smaller than or equal to 10; the preparation process of the cross-linked biological polysaccharide gel comprises the following steps: dissolving and uniformly mixing biological polysaccharide and the diaminodiketopiperazine compound in water or a buffer solution, then adding a condensing agent to form a reaction solution, and carrying out a cross-linking reaction to obtain the cross-linked biological polysaccharide gel, according to the invention, the diaminodiketopiperazine compound is used as a cross-linking agent to cross-link the biological polysaccharide, so that the biological polysaccharide gel has higher cell survival rate and better biological safety, and the prepared gel has better viscoelasticity and thermal stability and can tolerate moist heat sterilization.

The present invention relates to a biological polysaccharide hydrogel, a preparation method therefor and an application thereof. The biological polysaccharide hydrogel of the present invention is formed by means of the mixing and reaction of two solutions; the first solution is a polysaccharide derivative solution having an aldehyde on a side chain; the second solution is a polysaccharide derivative solution having a primary amine on a main chain or a side chain, or a small molecule compound solution having two or more primary amines. The preparation method of the present invention comprises preparing the first solution and the second solution, and then mixing the first solution and the second solution to form a transparent biological polysaccharide hydrogel. The biological polysaccharide hydrogel of the present invention can be applied as a vitreous substitute.

The invention discloses a waterproof, antifouling and antibacterial copolymer protective layer and a preparation method thereof, and relates to the technical field of antifouling coatings. The preparation method at least comprises the following steps: mixing octamethylcyclotetrasiloxane and aminopropyltrimethylsilane for reaction to obtain a side chain amino modified polysiloxane polymer; mixing the side chain amino modified polysiloxane polymer with quaternary ammonium salt-containing epoxy resin, magnetically stirring uniformly, adding tetraethoxysilane and dibutyltin diacetate, and vacuumizing and defoaming to obtain a waterproof, antifouling and antibacterial copolymer coating; the waterproof, antifouling and antibacterial copolymer coating is wiped or sprayed on the dry and clean surface of a base material, and after drying and curing, the waterproof, antifouling and antibacterial copolymer protective layer is obtained. The waterproof, antifouling and antibacterial copolymer protective layer prepared by the invention covers the surface of a base material, is odorless, nontoxic, anti-aging, waterproof, oil-proof, antibacterial, mildew-proof, antifouling and doodling-proof, and has excellent antifouling and self-cleaning functions.

This invention discloses a surfactant composition, its preparation method, and its applications. The surfactant composition comprises a nonionic surfactant, an amphoteric surfactant, and optionally an anionic nonionic surfactant; wherein the nonionic surfactant is selected from at least one nonionic compound containing a hydrophobic hydrocarbon chain and two or more hydroxyl groups. The surfactant composition of this invention forms a bicontinuous phase structure through self-assembly, which is interconnected in all directions, thereby providing excellent mass transport properties and achieving rapid wetting. The use of a mixture of a polyhydroxy nonionic surfactant and an amphoteric surfactant enhances hydrogen bonding with water and the anions in the amphoteric surfactant, while the hydrophobic hydrocarbon chain enhances van der Waals forces, increasing the viscoelasticity of the coating under wetting conditions and thus enhancing its resistance to prolonged water misting.

The application relates to a high internal phase emulsion ink material and a preparation method and application thereof, and belongs to the technical field of emulsion ink material preparation. The preparation method of the high internal phase emulsion ink material provided by the application is as follows: a pulse electric field is used to treat a soybean protein isolate solution, then the soybean protein isolate solution is mixed with a polysaccharide solution as an aqueous phase, then vegetable oil and a bioactive substance are mixed as an oil phase, and finally the aqueous phase and the oil phase are mixed and high-speed sheared to prepare the high internal phase emulsion ink material. The high internal phase emulsion ink material prepared by the application has high stability after freeze-thaw storage and high retention rate of the bioactive substance, can effectively embed the bioactive substance, better realizes slow release of the bioactive component, achieves the purpose of targeted transport, improves the retention capacity of the emulsion to the internal phase substance under the freeze-thaw condition, has great application prospect and development potential in the preparation of 3D printing functional food, and can provide a new technical direction and technical support for the 3D printing functional food.

The present invention provides a composite nanoparticle, belonging to the technical field of food and biological preparations, wherein the composite nanoparticle comprises tea residue protein and epigallocatechin gallate; the mass ratio of the tea residue protein to epigallocatechin gallate is 1:(0.01-0.1). The present invention utilizes the combination of tea residue protein and epigallocatechin gallate through hydrogen bonding to form a relatively compact structure, thereby improving the functional properties of the tea residue protein and reducing the particle size of the composite nanoparticle; the composite nanoparticle can prepare a Pickering emulsion with high stability, therefore, the nanoparticles composited by tea residue protein and epigallocatechin gallate can effectively serve as a food-grade stabilizer for Pickering emulsion.

This invention discloses a biodegradable gel plugging agent, its preparation method, and its application in high-temperature well plugging. The biodegradable gel plugging agent comprises the following components by mass percentage: 10.0 wt% to 15 wt% propylene monomer, 1.0 wt% to 2 wt% crosslinking agent for gelation, 0.01 wt% to 0.001 wt% initiator, and the balance being water. It solves the problems of poor degradation and salt resistance in existing technologies. When applied, because the crosslinking agent contains a conjugated aromatic system, it does not require additional conditions such as light, acidic conditions, or alkaline conditions, and can degrade spontaneously under certain temperature conditions. It has the characteristics of controllable gelation time, spontaneous degradation under certain temperature conditions, and low viscosity of the degraded product. Moreover, the gel can degrade without the need for an additional gel-breaking agent.

The invention belongs to the technical field of dairy product processing, and particularly relates to walnut meal low-fat yoghourt added with glycosylation modified walnut protein emulsion gel and a preparation method of the walnut meal low-fat yoghourt. The preparation method comprises the following steps: taking degreased walnut cake meal as a raw material, extracting walnut protein in the degreased walnut cake meal through alkali dissolution and acid precipitation, carrying out moist heat glycosylation modification to obtain a conjugate solution, homogenizing the conjugate solution and walnut oil together to form an emulsion, adding GDL emulsion to induce the emulsion to form emulsion gel, and carrying out freeze-drying to obtain the walnut oil gel. And adding the emulsion gel into the blended and unfermented yoghurt for fermentation, and after fermentation, performing after-ripening to obtain the walnut meal low-fat yoghurt with walnut flavor, good quality and relatively high nutritional value. By systematically optimizing the formula and process parameters, the prepared walnut meal low-fat yoghourt has the characteristics of unique walnut flavor, fine taste, stable quality and high nutritional value, and a feasible technical scheme is provided for the development of low-fat yoghourt products.

The application belongs to the technical field of oilfield exploitation, and particularly relates to a foam stabilizer based on graded modification of Enteromorpha, and a preparation method and application thereof. The foam stabilizer comprises a foam stabilizer or a chelated foam stabilizer. The preparation method of the foam stabilizer comprises the following steps: step one, Enteromorpha pretreatment: washing and drying Enteromorpha, and then crushing; step two, hot water leaching separation: adding deionized water according to a solid-liquid ratio of 1:25-35, stirring and leaching at 85-95 DEG C for 4 h, and filtering to obtain filtrate and residue; and step three, preparation of the foam stabilizer or the chelated foam stabilizer: drying the residue at 80 DEG C for 24 h, and sieving through a 200-mesh sieve to obtain the foam stabilizer; and alkali-activating the foam stabilizer and then performing a carboxylation reaction to obtain the chelated foam stabilizer. The application realizes high-value utilization of waste, and has the advantages of mild process, low cost, excellent foam stabilization under high temperature and high salinity, and effectively makes up for the defects of the prior art.

The invention relates to the field of food, and particularly discloses gum-based candies capable of improving the stability of B vitamins and a making method of the gum-based candies. The invention discloses gum-based candies capable of improving the stability of B vitamins. 100 parts of gum-based candies comprise the following raw materials in parts by weight: 17.5-23.5 parts of gum-based materials, 1-4 parts of a taste masking agent, 0.023-0.028 part of B vitamin capsules, 0.1-1 part of food coloring, 1-4 parts of edible acid and the balance of a filling agent, the B-group vitamin capsule is prepared from a core material and a wall material according to the mass ratio of 1: (2.3-2.5), the core material comprises B-group vitamin, and the wall material comprises konjac glucomannan, bacterial cellulose nanofiber and glycerol according to the mass ratio of 1: (0.02-0.04): (0.2-0.3). The gum-based candy is rich in B vitamins, and the B vitamins are good in stability, long in chewing time and good in viscoelasticity.

The invention discloses a method for improving the quality of wheat flour and noodles thereof through static magnetic field treatment and application of the method, and belongs to the technical field of food processing. The method comprises the following steps: treating wheat flour in a static magnetic field of 1-15mT for 6-100 hours; the rheological property and the mechanical stirring resistance of the dough of the wheat flour are improved by controlling the treatment of the static magnetic field; hydrophobic amino acids such as gluten egg white amino acid and tyrosine are promoted to be embedded in the protein, so that the protein structure is more aggregated; the texture property and the cooking quality of the wheat noodle product are improved. According to the method, the processing performance of the spring wheat dough and the quality of gluten protein are remarkably improved. In addition, the method for improving the quality of the wheat flour is environment-friendly, harmless to human bodies, low in processing cost and simple to operate, and has industrial application prospects.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to an anodic aluminum oxide PO protective film adhesive tape for a battery and a preparation method of the adhesive tape. The rubber comprises a synthetic rubber master batch and a curing agent, wherein the synthetic rubber master batch comprises a mixed solvent, a mixed monomer and a mixed initiator; the adhesive tape prepared by the invention has better cohesion performance, has the characteristics of high temperature resistance, chemical resistance and the like, and can meet various requirements of preventing a processing surface from being oxidized too fast, isolating strong acid, strong alkali and solvents and preventing the processing surface from being corroded by a solution in the preparation process of aluminum oxide.

The present invention relates to a 6-arm PEG hydrogel composition whose physical properties are converted from a sol to a gel within 30 minutes over time. In the present invention, two types of PEG derivatives are included as a main component of the hydrogel, and when each of the PEG derivatives is dissolved in a buffer solution, and then the two solutions are mixed, it can be converted in physical properties to a gel state within 30 minutes.

The invention provides a high-temperature-resistant clean fracturing fluid and a preparation method thereof, and belongs to the technical field of fracturing fluids. The cleaning agent is prepared from the following raw materials in parts by weight: 3-5 parts of a high-temperature-resistant gemini surfactant, 0.5-1 part of a cosurfactant, 5-7 parts of a cleanup additive, 1-2 parts of nano granules and 70-80 parts of water. The high-temperature-resistant clean fracturing fluid prepared by the invention has better high-temperature resistance, salt resistance and shear resistance, good sand-carrying effect and excellent viscoelasticity, avoids the damage of a large number of inorganic ions to the change of original properties of a stratum, is simple in preparation process and wide in raw material source, and has a wide application prospect in oil and gas field exploitation and yield increase.

The present invention discloses a semi-dry viscoelastic sealant and a preparation method thereof. In parts by mass, the semi-dry viscoelastic sealant comprises: 45-60 parts of polyisobutylene resin, 25-40 parts of polyisobutylene amine, 15-25 parts of polyisocyanate microcapsules, 10-20 parts of lubricating fillers, 5-10 parts of reinforcing fillers, 20-30 parts of pigment fillers, 4-8 parts of rust-proof fillers, 1-2 parts of thickeners, 0.3-0.6 parts of dispersants, and 2-4 parts of corrosion inhibitors. The present invention adopts polyisobutylene and polyisobutylene amine as the main resins, adds microcapsules embedded with polyisocyanates, and obtains a semi-dry viscoelastic sealant with good viscoelasticity, self-adhesiveness and self-healing properties. It can be used for the sealing and corrosion protection requirements of threaded connectors subjected to large alternating loads in seawater environments, and makes up for the problem of thread jamming and affecting installation when the semi-dry viscoelastic sealant is used directly.

The application relates to a coal mine plugging gelatinizing agent and a preparation method thereof, and relates to the technical field of coal mine plugging materials. The coal mine plugging gelatinizing agent comprises the following components in parts by weight: modified bentonite 60-75 parts, calcium chloride 10-25 parts, a filler 1-10 parts and cellulose 0.5-5 parts. The modified bentonite is obtained by mixing and magnetizing modification of bentonite and sodium silicate; and the filler is composed of spherical aluminum powder and hydrotalcite powder. The modified bentonite prepared by mixing and magnetizing modification of bentonite and sodium silicate is used as the main component, so that the compressive strength of the gelatinizing system is improved, and the overall adhesion is strengthened; in combination with the filler composed of spherical aluminum powder and hydrotalcite powder, calcium chloride and cellulose, the viscoelasticity, compactness and piling property of the mud can be effectively improved, so that the problems of poor compressive strength and poor air plugging effect of the existing inorganic plugging gelatinizing agent are effectively solved.

The invention belongs to the field of storage tank bottom plate corrosion prevention, and discloses a storage tank bottom plate external corrosion prevention and leakage monitoring system and method. The system comprises a storage tank, a bottom plate, a base, a sealing system, a gas transmission system and a detection system, wherein the sealing system wraps the outer edge of the bottom plate; the detection system comprises a plurality of monitoring holes, the monitoring holes horizontally penetrate through the base, and gas component monitors are arranged at outlets in the two ends of each monitoring hole; the gas transmission system comprises a plurality of gas transmission holes, and outlets of the gas transmission holes are communicated with the clearance space between the bottom plate and the base. According to the scheme provided by the invention, various inert gases can be conveniently provided for the base area, the operation of the storage tank is not interrupted, the operation can be carried out at any time as required, meanwhile, the leakage of the storage tank can be monitored according to the gas component monitor, and the structural integrity of the bottom plate of the storage tank is ensured.

The hyaluronic acid filler according to the present invention exhibits improved high viscoelastic flow characteristics, and has advantages of monophasic hyaluronic acid fillers and biphasic hyaluronic acid fillers together, and therefore it maintains the shape while having low moving possibility when injecting into skin, and thus it is excellent when used for improving wrinkles, augmentation of soft tissues such as cheeks, chest, nose, lips and hips, etc., and correcting contours, and the duration time in the human body is increased and side effects are small, even if a small amount of crosslinking agent is used during the preparation process.

The invention discloses a high-toughness ceramic composite electrolyte membrane and a large-scale manufacturing method thereof, and belongs to the technical field of battery materials. The method comprises the following steps: firstly, mixing nanoscale solid electrolyte powder with a polymer electrolyte raw material to prepare ceramic polymer slurry, and further preparing a ceramic polymer electrolyte membrane material roll; a ceramic polymer electrolyte film material roll is obtained through rolling of a double-roller hot press, and then the ceramic polymer electrolyte film material roll is cut in batches through a splitting machine to obtain the ceramic polymer electrolyte film; liTFSI, PEO and EC / DMC are mixed, stirred and dispersed, and ionic gel is obtained; mixing the ionic gel with a pre-prepared aramid fiber turbid liquid to obtain aramid fiber gel; and blade-coating the ceramic polymer electrolyte film with the aramid fiber gel, drying the ceramic polymer electrolyte film, removing the ceramic polymer electrolyte film from the copper foil to obtain an aramid fiber reinforced electrolyte film with a composite structure, and performing multi-layer overlapping and pressing to obtain the aramid fiber reinforced composite electrolyte film. The prepared composite electrolyte membrane is high in ionic conductivity and good in thermal / mechanical safety.

The present invention relates to the field of health food processing, and provides a rhizoma bletillae stomach-nourishing health food preparation method, the rhizoma bletillae stomach-nourishing health food is prepared from rhizoma bletillae, coix seeds and glutinous rice, and the preparation method comprises the following preparation steps: rhizoma bletillae glue pulverization: dry rhizoma bletillae tubers are crushed and sieved, are mixed with purified water, are uniformly stirred and stand, are added with 10-20 parts of purified water, are subjected to ultrasonic extraction, and are filtered to obtain a rhizoma bletillae glue powder; filtering with gauze, extruding, drying filtrate, and grinding to obtain rhizoma bletillae rubber powder for later use; pre-gelatinization treatment: respectively carrying out pre-gelatinization treatment on the coix seeds and the glutinous rice; the coix seeds and the glutinous rice which are subjected to pre-gelatinization treatment are smashed through an ultrafine pulverizer and sieved through a 20-mesh sieve, the rhizoma bletillae gelatin powder, the coix seed powder and the glutinous rice flour are mixed and stirred to be uniform, and the rhizoma bletillae stomach-nourishing health food is obtained. The stomach-nourishing health-care food prepared by the method has the remarkable effects of nourishing the stomach and clearing damp, and is rich in fragrance, fine, smooth and fragrant in taste, few in variety of preparation raw materials, easy to obtain, simple in preparation process and good in application prospect.