219 results about "Super absorbent" patented technology

Disclosed in the present invention are a water-reactive asphalt cold patch, a preparation method therefor and a use method thereof. The water-reactive asphalt cold patch of the present invention comprises the following components in parts by mass: 1000 parts of aggregates; 50-60 parts of mineral powder, 85-150 parts of emulsified asphalt, 15-30 parts of a demulsifier, and 1-10 parts of a super absorbent resin. The preparation method for the water-reactive asphalt cold patch of the present invention comprises the following steps: 1) adding aggregates to a mixing vessel and mixing uniformly; 2) adding emulsified asphalt to the mixing vessel and mixing uniformly; 3) adding mineral powder and a demulsifier to the mixing vessel and mixing uniformly; and 4) adding a super absorbent resin to the mixing vessel and mixing uniformly. The water-reactive asphalt cold patch of the present invention has the advantages of simple storage, convenient construction, rapid early strength development, good adhesion to the original pavement, strong resistance to water damage, and eco-friendliness, and is suitable for large-scale popularization and application.

The invention discloses a biodegradable sanitary towel with polylactic acid as a main component. The biodegradable sanitary towel comprises a degradable core body, and the degradable core body comprises a surface layer, an absorption core layer and a bottom layer; the surface layer is a polylactic acid fiber non-woven fabric; the polylactic acid fiber non-woven fabric is a polylactic acid fiber spunlace non-woven fabric, a polylactic acid fiber hot air non-woven fabric or a polylactic acid spunbond non-woven fabric; the absorption core layer comprises an upper layer, a middle layer and a lower layer; the upper layer and the lower layer are made of polylactic acid fiber non-woven fabrics, and the middle layer is a mixture composed of polylactic acid two-component fibers and super absorbent resin. And the bottom layer is a degradable impermeable film which is a PHA modified polylactic acid film. The composite material has natural weak acidity and natural antibacterial activity, can create a weak-acidity antibacterial microenvironment for people, is skin-friendly, environment-friendly and healthy, and is an ideal selected material for disposable hygienic products. The natural antibacterial agent has the functions of natural bacteriostasis, weak acidity and the like, and is biodegradable.

The present disclosure relates to a preparation method of a super absorbent polymer composition. More specifically, it relates to a preparation method of a super absorbent polymer composition capable of pulverizing the hydrogel polymer to a normal particle size without agglomeration between particles by adding an additive having a specific structure, and significantly reducing the amount of fine powder generated during the process.

The present disclosure relates to a preparation method of a super absorbent polymer composition. More specifically, it relates to a preparation method of a super absorbent polymer composition capable of pulverizing the hydrogel polymer to a normal particle size without agglomeration between particles by adding an additive having a specific structure, reducing manufacturing cost by simultaneously performing a drying process and a surface cross-linking process, and significantly reducing the amount of fine powder generated during the process.

The invention belongs to the technical field of materials, and discloses mildew-proof modified starch-based super absorbent resin as well as a preparation method and application thereof. The mildew-proof modified starch-based super absorbent resin is prepared from the following raw materials in parts by mass: 10 to 20 parts of modified carboxymethyl starch, 2 to 3 parts of quaternized carboxymethyl chitosan, 10 to 15 parts of 2-acrylamido-2-methylpropanesulfonic acid, 15 to 25 parts of acrylamide, 100 parts of acrylic acid, 0.4 to 0.7 part of a redox initiator and 0.05 to 0.15 part of a cross-linking agent. According to the invention, the inherent defects of low mechanical strength, poor salt tolerance, poor stability, easy decomposition, short service life and the like of the starch-based resin are obviously improved, so that the starch-based super absorbent resin with good mildew resistance and more excellent performance can be developed.

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 utility model discloses a sodium thiocyanate anti-caking stock bin which comprises a bin body with a discharging port formed in the bottom, a feeding port and a mounting hole are formed in the top of the bin body, a dehumidification device is arranged in the mounting hole and comprises a filter screen, a sealing plate, a motor, auger blades and super absorbent resin particles, the sealing plate is in flange connection with the mounting hole, the filter screen is of a cylindrical structure, and the motor is connected with the motor. The top of the filter screen is fixedly connected with the lower surface of the sealing plate, the motor is installed on the sealing plate, the auger blade is located in the filter screen, the outer diameter of the auger blade is smaller than the diameter of the filter screen, the motor drives the auger blade to rotate, and the super absorbent resin particles are located in the filter screen. The moisture absorbent is arranged to adsorb moisture in the bin body, and the problem that sodium thiocyanate absorbs water and hardens is prevented.

The utility model discloses a water stopping device and system for underground water layered monitoring, the water stopping device comprises a base body column and a water swelling rubber layer, and the water swelling rubber layer is arranged on the side surface of the base body column; the guide rings are arranged on the upper side and the lower side of the base body column and used for limiting the water swelling rubber layer; and the hollow pipe penetrates through the base body column and the guide ring. The defects that current single-hole layered monitoring work is mostly achieved through variable-diameter hole-forming construction or water stop plugs, but the variable-diameter hole-forming construction or the water stop plugs are large in occupied area, high in manufacturing cost, limited in monitored target layer and incapable of or not suitable for long-time water stop are overcome. The water swelling rubber layer containing the sodium polyacrylate super absorbent resin is adopted as a water stop material, the monitoring probe is lowered to a water-resisting layer between different water-bearing layers in cooperation with the connecting rod, and permanent monitoring of the multi-target water-bearing layer is achieved.

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 technical field of construction devices, in particular to a self-curing concrete slip form construction metal mold with variable scale width, which comprises a left side frame concave plate, a right side frame convex plate, a top film covering mechanism, a left side film covering mechanism and a right side film covering mechanism, the end face of the left end of the right side frame convex plate is matched with the left side frame groove in a sliding mode, and a feeding opening is formed in the lower portion of the left side wall of the left side frame concave plate; the left frame concave plate and the right frame convex plate are connected to form a cavity for filling concrete, and the blending formula material comprises 0.17% of super absorbent resin, 21% of a polycarboxylic acid water reducer and 0.012% of citric acid. The left-right width of the slip form mold can be adjusted, and therefore the requirement for different widths of poured anti-collision guardrails is met; by means of automatic film sealing and blending of specific formula materials in concrete, manual maintenance can be omitted, and the slip-form construction requirements for low-slump concrete construction and pumping are effectively met.

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 discloses a waste gas discharge treatment device for super absorbent resin production based on environmental protection, and belongs to the technical field of resin waste gas treatment. The waste gas discharge treatment device comprises a waste gas treatment tank, and an air ingress pipe is fixedly mounted on a waste gas ingress pipe; the left side plates are fixedly mounted on the inner wall of the left side of the waste gas treatment tank; the right side plates are fixedly mounted on the inner wall of the right side of the waste gas treatment tank; the activated carbon adsorption part is arranged at the ends, away from the inner wall of the waste gas treatment tank, of the left side plate and the right side plate, and an independent waste gas purification space is formed between the activated carbon adsorption part and the left side plate and between the activated carbon adsorption part and the right side plate. And after high-concentration dilution, the waste gas is put into the waste gas treatment tank for treatment, so that the condition of energy waste caused by unsaturated work when low-concentration waste gas is treated due to the fact that high-power and large-volume equipment is used for adapting to high-concentration waste gas treatment in the past is avoided.

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 invention relates to the technical field of concrete, and particularly discloses controllable heat release type lightweight concrete and a preparation method thereof. The controllable heat release type lightweight concrete provided by the invention is prepared from the following components in parts by weight: 250 to 320 parts of cement, 2.4 to 3.7 parts of foam stabilizer, 2 to 2.6 parts of composite foaming agent, 5 to 10 parts of super absorbent resin, 1 to 4 parts of accelerator, 3 to 9 parts of water reducing agent, 0.5 to 2 parts of fiber and 130 to 180 parts of water, the composite foaming agent is prepared from hydrogen peroxide and ethyl azidoformate in a weight ratio of 1: (0.15-0.35); the invention further provides a preparation method of the controllable heat release type lightweight concrete. The controllable heat release type lightweight concrete provided by the invention is stable in bubble structure and small in temperature change amplitude in the foaming process, foam breaking, hole wall defects and a heat accumulation effect are avoided, and the obtained lightweight concrete is good in crumple performance and excellent in mechanical property.

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 utility model relates to the field of anesthesia medical instruments, in particular to an anesthesia postoperative vomiting nursing bag which comprises a bag body, and the bag body is integrally formed by three layers of materials, namely a flow guide layer, a water absorption layer and a waterproof layer from inside to outside. One side of the bag opening of the bag body is upwards provided with a bag opening extending part, and the upper end of the bag opening extending part is provided with a convex arc-shaped neck support; the post-anesthesia vomit nursing bag is fixed to the neck of a patient through the buckle belt assembly, the bag opening extending part and the neck support abut against the gap between the neck and the mouth, and the problems that the vomit bag topples over and falls off, and vomit is scattered on the body of the patient to cause secondary pollution are effectively solved; the bag body is integrally formed by the flow guide layer, the water absorption layer and the waterproof layer, the water absorption layer is made of super absorbent polymer (SAP), vomitus liquid can be absorbed in time, and cleaning difficulty is reduced.

The invention relates to the technical field of building materials, in particular to a high-adaptability sludge curing agent and application thereof.Through the synergistic effect of glass powder, latex powder, super absorbent resin and graded aggregate, all unit phase interfaces of sludge particles can be firmly combined and can react with active substances in the sludge particles to generate expanded gelling substances, and the curing effect of the sludge particles is improved; through chemical excitation, combination and physical combination can be generated to improve the plasticity of a blank, the strength of a semi-finished green brick and the compressive strength of a product, the use performance of the product can be met, meanwhile, heavy metal and organic matter can be removed, harmful substances are prevented from being dissolved out, the raw materials are wide in source, the production process is simple, and the production cost is low. The unfired water permeable brick meeting the market requirement is produced by utilizing the desilted sludge on the premise of low energy consumption and no environmental pollution, so that the dual purposes of dredging the river channel, beautifying the water area environment and turning waste into wealth are achieved, and the unfired water permeable brick can be widely popularized and used.

The utility model discloses a water leakage detection mechanism for a large-scale split type stirring tank, which comprises a bottom plate, a top plate and a plurality of annular cylinders with openings at the upper parts and the lower parts, and the annular cylinders are formed by splicing a plurality of arc-shaped plates; the arc-shaped plates are fixedly connected through bolts, the arc-shaped plates and the bottom plate are fixedly connected through bolts, the arc-shaped plates and the top plate are fixedly connected through bolts, the detection device comprises a plurality of second detection strips of linear structures and a plurality of first detection strips of arc-shaped structures, and the structures of the second detection strips are the same as the structures of the first detection strips. A first detection strip and a second detection strip are arranged at the sealing position of the stirring tank, when water leakage occurs at a gap, super absorbent resin particles in a hollow pipe absorb water and expand, and a rotary circular plate rotates by pushing a sliding block to move, so that a red coating faces the outside, and a person can conveniently and rapidly find out a water leakage point; and the leak detection operation is more convenient and simpler.

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.

A super absorbent polymer has excellent absorption rate and absorption performance while exhibiting excellent rewet properties even without containing pulp. A preparation method of the super absorbent polymer is also provided.

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.