111 results about "Super absorbent" patented technology

The invention belongs to the technical field of compressed air energy storage, and particularly relates to an anti-dispersion grouting material for grouting reinforcement of compressed air energy storage surrounding rock and a preparation method of the anti-dispersion grouting material. The grouting material is prepared from the following components in parts by weight: 200 to 300 parts of sulphoaluminate superfine cement, 120 to 180 parts of water, 4 to 9 parts of nano silicon dioxide, 3 to 4.5 parts of water glass, 0.4 to 0.6 part of super absorbent resin and 4 to 9 parts of polycarboxylic acid type water reducing agent. The super absorbent resin is polyacrylamide. The preparation method comprises the following steps: doping the water glass into the sulphoaluminate superfine cement, stirring and mixing the sulphoaluminate superfine cement, the nano silicon dioxide, the super absorbent resin and the polycarboxylic acid water reducer, adding the water, and stirring to a uniform state. The prepared grouting material has the characteristics of high strength, good dispersion resistance, early strength, rapid solidification, permeability resistance, freezing resistance, micro-expansion, chemical compatibility, low alkalinity, good environmental adaptability and the like. And the structural safety and long-term sealing effect of the gas storage in a circulating high-pressure load environment can be ensured.

The invention discloses a super absorbent material and side leakage prevention paper diapers, and belongs to the field of hygienic product materials. Comprising the following steps: cooling acrylic acid in an ice-water bath, and partially neutralizing the acrylic acid by using a sodium hydroxide solution; mixing potato starch with deionized water, and gelatinizing at high temperature to obtain gelatinized starch; mixing gelatinized starch, neutralized acrylic acid, potassium persulfate and deionized water; uniformly stirring under the protection of nitrogen, heating and carrying out graft copolymerization reaction to obtain a copolymer; adding modified silicon dioxide into the copolymer, and uniformly dispersing; then adding an oxetane compound, and carrying out a cross-linking reaction at a high temperature to obtain a super absorbent material; wherein the modified silicon dioxide has a porous structure, and nano-silver particles are loaded in pore walls. The super absorbent material disclosed by the invention effectively breaks through the gel blocking effect of the traditional high-molecular water-absorbent resin, has ultrahigh liquid absorption capacity and water locking capacity, and realizes slow-release long-acting bacteriostasis at the same time.

The present disclosure relates to a composition of super absorbent polymer and a preparation method thereof, and more specifically, a composition of super absorbent polymer and a preparation method thereof, that may improve deodorization capacity and odor masking capacity by using specific additives in combination, to effectively inhibit odor generated from urine, and the like, when applied to a product such as a diaper, and the like, and bacteria growth during wearing of a product.

The invention relates to a coating capable of effectively preventing steam explosion of molten aluminum and a preparation method thereof, and the coating capable of effectively preventing steam explosion of molten aluminum is prepared from the following raw materials by weight: 10%-30% of moisture-cured epoxy resin, 5%-20% of super absorbent resin, 2%-10% of calcium salt, 5%-10% of hexagonal boron nitride, 0.5%-2% of a WD-40 lubricant, 0.2%-1% of a dispersant, a defoaming agent and white oil, and performing ball milling. The inorganic calcium salt and the hexagonal boron nitride are used as fillers to be filled in the coating and form an organic-inorganic composite coating with the matrix resin, so that the coating has the advantages of good toughness of an organic material and extremely high hardness, strength, impact resistance, wear resistance, heat resistance and the like of an inorganic material. The coating provided by the invention adopts a white oil system, does not volatilize harmful substances in the use process, is clean and environment-friendly, and has good adhesiveness, excellent construction performance and good molten aluminum steam explosion prevention effect.

The invention relates to the field of polymer composite materials, and discloses a bionic polymeric gel and a preparation method and application thereof, the gel comprises a hydrophobic continuous phase skeleton composed of siloxane, a styrene block copolymer and the like, and a hydrophilic network formed by in-situ polymerization of hydrophilic precursors such as super absorbent resin and the like and interpenetrating with the hydrophobic continuous phase skeleton. The preparation method adopts a continuous reaction extrusion process and comprises the following steps: firstly, melting and blending the main components, and then sequentially injecting the bifunctional interface anchoring agent, the skeleton protection type comonomer and the thermal initiator through a lateral charging port. According to the method, a chemical bond is constructed on a two-phase interface through an interface anchoring agent, and degradation of a hydrophobic skeleton is inhibited by using a skeleton protection type comonomer. The prepared gel is stable in structure, has excellent adhesion and high hygroscopicity, and can be used for preparing medical application, pressure-sensitive adhesive or transdermal absorption preparations.

The invention relates to the technical field of sanitary napkin permeability testing, in particular to permeability testing equipment and method in the production process of dry and comfortable sanitary napkins with macromolecular water-absorbing factors, the permeability testing equipment comprises a support assembly, the support assembly is composed of a bottom plate and a rear side plate, a clamping assembly is arranged on the front side of the rear side plate, and a measuring assembly is arranged on the bottom plate; the clamping assembly comprises a clamping plate structure, a pressing plate and a pressing rod, the clamping plate structure comprises a clamping plate and a connecting cylinder, the measuring assembly comprises a liquid collecting tank, a measuring cylinder and a collecting box, transmission structures are arranged on the two sides of the collecting box, and a piston structure is arranged in the measuring cylinder. According to the device, by arranging the clamping assembly and the measuring assembly, when a sanitary towel is taken down, collected redundant simulation liquid is directly discharged out of the measuring cylinder, operation is convenient and easy, meanwhile, a cleaning ring can clean the inner wall of the measuring cylinder, the situation that the accuracy of next detection is affected by simulation liquid residues is avoided, and meanwhile the device is provided with an angle adjusting structure; the placement angle of the sanitary napkin can be adjusted before detection so as to meet experimental requirements.

The present invention relates to a gas collection device, and provides a gas collection device for collecting gas that is generated as microorganisms are cultured in a super absorbent polymer product.

The invention relates to the technical field of flexible electronic devices and conductive composite materials, and discloses a carbon nanotube assisted liquid metal dispersion method and application thereof in conductive ink and a flexible sensor. The method comprises the following steps: firstly, dispersing gallium-indium alloy and carboxyl-modified multi-walled carbon nanotubes in water in a mass ratio of 2: 1 through probe type ultrasound and water bath ultrasound respectively, then mixing the gallium-indium alloy and the carboxyl-modified multi-walled carbon nanotubes, and repeating the ultrasound process, so that liquid metal droplets are uniformly coated with the carbon nanotubes to form an LM (at) CNT composite dispersion liquid; adjusting the pH value of the dispersion liquid to 10.5-11.0, mixing the dispersion liquid with natural rubber latex, and adding super absorbent resin to prepare the conductive ink suitable for direct writing type three-dimensional printing. Through DIW printing and curing, the maximum GF value of the obtained flexible strain sensor in a strain interval of 1%-300% reaches 28, and the flexible strain sensor has resistance self-repairing performance, can accurately respond to human body part movement, and is suitable for the fields of wearable equipment, human body movement monitoring and the like.

The present disclosure relates to a super absorbent polymer exhibiting an improved absorption rate and improved absorption performance.

The invention relates to a method for the continuous thermal surface post-crosslinking of superabsorbent, in which superabsorbent particles are coated by spraying a surface post-crosslinking agent solution, the average droplet diameter during spraying being 100 to 4,500 m, the coated superabsorbent particles are subjected to thermal surface post-crosslinking in a contact dryer 1, and the coated superabsorbent particles are subjected to thermal surface post-crosslinking in a drying process. According to the invention, a gas is introduced into the contact dryer 1, from which an exhaust gas stream is discharged, which is deflected upwards in the contact dryer 1 by at least 75 degrees with respect to the horizontal product flow direction, and the gas flow rate of the exhaust gas stream after deflection is less than 5 m / s.

The invention discloses a self-crosslinking water-based water-blocking adhesive, a preparation method thereof and an application of the self-crosslinking water-based water-blocking adhesive in an optical cable water-blocking material. The water-blocking adhesive consists of superfine super absorbent resin powder, an acrylic polymerizable mixed solution and a polyvinyl alcohol aqueous solution, wherein the particle size D90 of the super absorbent resin powder is less than 50 microns. The preparation method comprises the following steps: wetting the super absorbent resin powder with alcohol, dispersing in a mixed solution containing high-concentration acrylate, grinding with a colloid mill, and compounding with a polyvinyl alcohol solution to form a stable glue solution. A non-woven fabric or a fiber yarn base material is coated with the glue solution, thermal polymerization crosslinking of monomers can be achieved after drying, and a compact glue layer with cohesiveness and water absorption is formed. The invention effectively solves the problems of serious powder falling and slow water absorption rate of the traditional water-blocking material, has the advantages of fast water-blocking response, firm bonding, environmental friendliness and the like, and is suitable for preparation of water-blocking tapes and water-blocking yarns of optical cables.

The utility model provides a quick plugging device for leakage of a reservoir cofferdam, which relates to the technical field of hydraulic engineering and comprises an air pump, a connecting plate and an air bag. The connecting plate is provided with a sealing connector, the front side of the connecting plate is fixedly connected with a fixing pipe, the air bag is arranged on the front side of the connecting plate, the front side of the sealing connector is connected with the air bag, the rear side of the air bag is connected with an exhaust pipe, the exhaust pipe penetrates through the connecting plate, an exhaust valve is installed on the exhaust pipe, and the outer side of the air bag is sleeved with an elastic sleeve. When the air bag expands, the inner side of the leakage part rubs with the elastic sleeve, so that the elastic sleeve is broken, the super absorbent resin filled in the elastic sleeve is in contact with water and quickly foams and expands, narrow cracks in the leakage part are blocked, and the tightness and the reliability of blocking are improved; the problem that an existing quick plugging device for reservoir cofferdam leakage is poor in plugging effect on an uneven leakage part inside is solved.

The invention discloses ship lock large-volume air-entraining concrete and a pouring vibration exhaust method, and belongs to the technical field of concrete.The ship lock large-volume air-entraining concrete is prepared from 130-160 kg / m < 3 > of cement, 50-70 kg / m < 3 > of fly ash, 50-70 kg / m < 3 > of mineral powder, 600-750 kg / m < 3 > of sand, 1300-1500 kg / m < 3 > of gravel, 3-5 kg / m < 3 > of a water reducing agent, 90-130 kg / m < 3 > of water and 3-4 kg / m < 3 > of an air-entraining anti-cracking agent according to the mixing proportion; a nano-scale super absorbent material is adopted as an air-entraining anti-cracking agent, internal humidity is maintained and a temperature peak value is reduced through water absorption and slow water release, and corresponding nano micropores are reserved in a microstructure through water release and polymer shrinkage, so that the effects of enhancing mechanical properties and resisting cracking after air entraining are achieved.

The utility model discloses a cutting machine for producing a super absorbent towel, and relates to the technical field of water towel production, the cutting machine comprises a flattening mechanism, the flattening mechanism comprises a processing table, motors are arranged on both sides of the processing table, cavities are formed in both sides of the top of the processing table, screw rods are arranged in the two cavities, and the top of the processing table is provided with screw rods; and bearings are arranged at the ends, away from the motor, of the two lead screws correspondingly, and moving blocks are arranged outside the two lead screws correspondingly. According to the towel cutting device, the two adjusting bolts are rotated respectively to drive the respective clamping plates to press downwards, so that the two ends of a towel can be fixed, the situation that the towel moves or twists during cutting is avoided, the two motors are started respectively to control the respective lead screws to rotate, and when the two lead screws rotate in the opposite directions, the two lead screws are driven to rotate in the opposite directions. When the towels are cut, the moving blocks and the adjusting blocks move in opposite directions, and then the towels in the fixed state are pulled, so that the surfaces of the towels are smoother, and the final quality of the towels after cutting is ensured.

In an absorbent product, an absorbent core includes an upper absorber including a super absorbent material fixedly attached between upper and lower absorber sheets. The upper absorber includes material existence regions that are arranged in the width direction and to which the super absorbent material is fixedly attached, and a material non-existence region in which the super absorbent material does not exist is arranged between each pair of adjacent material existence regions. In each material non-existence region, the upper and lower absorber sheets are entirely joined together. In at least one material non-existence region, the top sheet and the upper absorber sheet are partly joined together. The load applied when the nonwoven fabric of the top sheet is stretched 3% in the width direction is twice or more of the load applied when the nonwoven fabric of the upper absorber sheet is stretched 3% in the width direction.

The invention relates to the technical field of tunnel engineering, and discloses a soil pressure shield spewing prevention and control method and system based on super absorbent resin, a shield tunneling machine and a medium. The soil pressure shield spewing prevention and control method based on the super absorbent resin comprises the steps that geological risk information of a soil pressure shield is obtained; according to the geological risk information, super absorbent resin is sprayed into a soil cabin before tunneling; in the tunneling process, muck water content information and soil cabin pressure information are obtained; and according to the muck water content information and the soil cabin pressure information, super absorbent resin is injected into the soil cabin in the tunneling process, so that spewing prevention and control are completed. The utilization rate of the super absorbent resin can be increased, and the spewing prevention and control efficiency is improved.

The present disclosure relates to a super absorbent polymer exhibiting an improved absorption rate and improved absorption performance.

The present disclosure relates to a super absorbent polymer having a high water content and a method for preparing the same. The super absorbent polymer according to the present disclosure has a relatively high water content compared to a conventional one but has no degradation in absorption-related physical properties, and thereby can be used in various fields.

The invention relates to the technical field of nursing pads, in particular to a high-absorption sanitary nursing pad and a preparation method thereof.The high-absorption sanitary nursing pad is prepared by compounding a skin-friendly surface layer, a flow guide layer, an absorption core layer and a bottom layer and conducting hot air forming; the surface of the silk protein non-woven fabric is coated with the antibacterial liquid through a low-liquid-supply foam finishing technology, and the skin-friendly surface layer which is high in comfort level, antibacterial, capable of absorbing moisture in a one-way mode and breathable is prepared; mixing the modified zein, O-quaternary ammonium salt chitosan, oxidized bletilla striata polysaccharide and deionized water, adjusting the pH value of the system, and stirring to obtain an antibacterial solution; pP fibers and ES fibers are mixed, hot air non-woven processing forming is adopted, and a flow guide layer is obtained; the absorption core layer is prepared by taking composite wood pulp fibers, super absorbent resin and ES fibers as raw materials.

The micronizing apparatus includes: a body having a transfer space where hydrogel is transferred, and a discharge space where ground hydrogel is discharged; a rotation shaft disposed in the transfer space, wherein at least one screw is formed on an outer perimeter surface of the first rotation shaft, to transfer the hydrogel along a longitudinal direction of the body; a rotor installed on the rotation shaft so as to rotate together with the rotation shaft, wherein a plurality of rotor blades and a plurality of rotor recesses are alternately formed along a circumferential direction on an outer perimeter part of the rotor; and a stator surrounding the rotor with an air gap between the rotor and the stator, which is a predetermined distance between an outside diameter of the rotor and an inside diameter of the stator, and is fixed to the body.

The invention discloses self-compacting concrete with synergistically optimized fluidity and volume stability, and belongs to the technical field of concrete materials, the self-compacting concrete is prepared from the following components by weight: 834-849 parts of coarse aggregate; 950 to 968 parts of artificial sand; 322 to 345 parts of ordinary Portland cement; 142 to 150 parts of water; 55 to 75 parts of modified hollow ceramic microbeads; 14 to 18 parts of an expanding agent; 5 to 9 parts of a super absorbent resin-montmorillonite composite material; and 5-11 parts of a water reducing agent. According to the self-compacting concrete disclosed by the embodiment of the invention, the contradiction between the fluidity and the volume stability can be fundamentally coordinated, and the shrinkage deformation is remarkably reduced while the excellent self-compacting performance is ensured, so that the self-compacting concrete is suitable for narrow space lining projects such as water delivery tunnels and the like which have extremely high requirements on structural integrity and long-term safety.

The present invention relates to a polyacrylic acid (salt)-based super absorbent polymer having a surface area–to–apparent volume ratio of 45 mm-1 or more and exhibiting a deodorization rate of 40% or more for dimethyl disulfide (DMDS) or dimethyl trisulfide according to the following Equation 1. [Equation 1] Deodorization rate (%) = (1 x Cs / Co) x 100 (In Equation 1, Cs is a peak area of an odor standard substance in a gas chromatography-mass spectrometry (GC-MS) graph for an odor standard substance solution that has been in contact with a super absorbent polymer at 35°C for 2 hours, and Co is a peak area of an odor standard substance in a gas chromatography-mass spectrometry graph for an odor standard substance solution that has been in contact with a control group at 35°C for 2 hours.)

The invention relates to a pet ice mat, and belongs to the technical field of pet supplies, the pet ice mat comprises a hollow mat body, a non-woven fabric bag is laid in the mat body, a plurality of fixed connection points are uniformly distributed between the non-woven fabric bag and the mat body, the non-woven fabric bag is provided with a plurality of latticed containing cavities, super absorbent resin gel is uniformly laid in the containing cavities, and the non-woven fabric bag and the mat body are fixedly connected through the super absorbent resin gel. By the adoption of the structure, it can be guaranteed that the super absorbent resin gel only remains in the containing cavity after absorbing water and expanding and does not move or gather, the internal structure is more stable, and therefore the problem that cooling of the pad body is uneven due to the fact that content moves, gathers and is uneven in distribution is solved. Compared with an existing pre-injected water product, the pet ice mat has the advantages that the mat body can be kept in a dry and light state in the delivery, transportation and storage stages, the weight, the thickness and the packaging size are greatly reduced, and the logistics transportation cost and the storage space cost are greatly reduced.

The present invention relates to a polyacrylic acid (salt)-based superabsorbent polymer, in which the T2 relaxation time of the superabsorbent polymer is controlled within a specific range, so as to provide excellent physical crosslinking and chemical crosslinking and exhibit a superior balance of properties such as absorption capacity under load and liquid permeability.

A super absorbent polymer, where a TD-NMR analysis result after swelling the super absorbent polymer with D2O satisfies Equation 1: Nt=0.1(%)≤50(%), where Nt=0.1 represents a normalized intensity measured at a signal acquisition time of 0.1 ms.

The present invention relates to multi-layered non-woven structures being useful as components of disposable absorbent articles and garments comprising super absorbent particles and thereby acts as a core. The invention thereby ensures that the body fluids can penetrate from a first layer, which acts as an acquisition layer, up to a third layer comprising SAP particles, the second non-woven layer serving to decrease the fluid volume per surface unit, as a conventional dispersion layer. However the second layer of the invention additionally acts like a non-return valve, preventing, or at least strongly limiting, any fluid transfer from the third layer to the first layer. Channels free of SAP can additionally be design to improve the inlet and rewet properties of the multilayer acquisition and distribution sheet non-woven material.

The present invention refers to a disposable absorbent hygiene article with high sensitivity to nitrites that comprises a nitrite indicator hot-melt adhesive (5) that detects nitrites in urine. The disposable absorbent hygiene article of the present invention is comprised of an inner layer or topsheet (1) comprising a non-woven, an acquisition distribution layer (ADL) (2), an absorbent core (3) comprising a super absorbent polymer (SAP) + fluff pulp, and an outer layer or backsheet (4) comprising a polyethylene or polypropylene film with a nitrite indicator hot-melt adhesive (5) which is applied in the inner side. The disposable absorbent hygiene article of the present invention is particularly but not exclusively, a diaper, an incontinence pad or a sanitary napkin.

The invention relates to the field of building materials, and discloses high-strength, high-elasticity and low-shrinkage concrete and a preparation method thereof.The concrete comprises a core-shell structure microcapsule, superabsorbent resin fully absorbing a reactive surfactant aqueous solution serves as a core, and a pH sensitive polymer serves as a shell. During preparation, the shell is triggered to be dissolved within a preset time and release the inner core substance by utilizing the reduction of the pH value in the cement hydration process. The scheme has the remarkable beneficial effects that 1, water is released at regular time for internal curing, so that the self-constriction of the concrete is remarkably reduced; 2, the interface bonding of the fiber and the matrix is reinforced by releasing the surfactant in a timed manner, so that the elasticity and toughness of the material are greatly improved. The invention synergistically solves the technical problems of poor workability, shrinkage cracking and weak interface bonding of high-toughness concrete.

This underpants-type absorbent article is provided with a waist opening part and a pair of leg opening parts, and when being in an unfolded and stretched state, encompasses a longitudinal direction, a left-right direction, and a thickness direction, which intersect one another. The underpants-type absorbent article is provided with an exterior member and an absorbent body that is positioned on the skin side relative to the exterior member and has an absorbent core containing pulp fibers and a super absorbent polymer. In the absorbent core, the weight per unit area of the pulp fibers is greater than the weight per unit area of the super absorbent polymer. When the underpants-type absorbent article in an unfolded and stretched state is viewed along the thickness direction, a first position is defined as a position located in the middle of the underpants-type absorbent article in the longitudinal direction and 10 mm from each end of the absorbent core in the left-right direction, a second position is defined as a position located in two middle sections among four equal sections obtained by dividing, in the left-right direction, a location 10 mm longitudinally from each longitudinal end of the exterior member constituting the waist opening part, and a third position is defined as a position located in an inner section of two equal sections obtained by dividing, in the left-right direction, a location that is 10 mm inward from the left or right end of the exterior member constituting each of the pair of leg opening parts in a front portion and does not overlap with the absorbent body. The absorbent core is provided at least in the first position, and in a natural state, the maximum thickness from the non-skin-side surface of the exterior member to the skin-side surface of the absorbent body in the first position is smaller than the maximum thickness of the exterior member in the second position and greater than the maximum thickness of the exterior member in the third po