46 results about "Super absorbent" patented technology

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 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 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 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 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.

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

The present disclosure relates to a super absorbent polymer film and a preparation method of the same. Specifically, it relates to a new type of super absorbent polymer film, which is thin and exhibits excellent absorption performance, flexibility and elasticity while having little change in the shape of products. In addition, the super absorbent polymer film of the present disclosure is free from scattering or leaking, and does not require an auxiliary substance such as pulp, so that products can be made thinner and the manufacturing process and costs may be reduced.

An aerosol-generating article is provided, including: a substrate portion including an aerosol-forming substrate; a ventilation portion downstream of the substrate portion and including perforations in a sidewall of the ventilation portion to allow ambient air into the ventilation portion through the perforations; and a front plug upstream of the substrate portion and including a humidity sensitive material that expands when subjected to an increasing humidity so a resistance to draw of the front plug increases and that shrinks when subjected to a decreasing humidity so the resistance to draw decreases, the material expanding by at least 10% when subjected to a humidity increase from a relative humidity of 50% to 75%, the material including ethylene vinyl acetate resin, super absorbent polymer, and carboxymethyl cellulose (CMC), or including cellulose acetate and polyesters, or including acrylamide and CMC, or including hydrogenated nitrile butadiene rubber or acrylate copolymer and CMC.

Provided is a super absorbent polymer, which is a polyacrylic acid (salt)-based super absorbent polymer, and comprises carbon, oxygen, and silicon on a surface thereof,wherein a spectrum derived from analyzing the surface of the super absorbent polymer via Fourier-transform infrared spectroscopy (FT-IR) satisfies Equation 1:XCOOH≤2.6[Equation⁢ 1]wherein in Equation 1,XCOOH is a value determined by dividing an integrated value of a region corresponding to a COOH functional group within the spectrum by an integrated value of a region corresponding to a CH2 functional group within the spectrum.

The present disclosure relates to a super absorbent polymer and a preparation method of the same. More specifically, it relates to a super absorbent polymer having a reduced extractable content without deterioration in absorption performance, and to a preparation method of the super absorbent polymer capable of producing the above-described super absorbent polymer by performing a polymerization reaction in the presence of a foaming agent and a carboxylic acid-based additive having a specific structure.

Provided herein are biodegradable, superabsorbent polymers (SAPs) and hydrogels, methods of preparing the same, and articles of manufacture comprising the superabsorbent polymer or hydrogels. The superabsorbent polymer and hydrogels comprise a poly(aspartic acid) polymer crosslinked with one or more crosslinking agents and can be used to prepare articles of manufacture, such as diapers, sanitary pads, incontinence products, bandages, wound dressings, surgical pads, pet pads, bed pads, meat pads, and agricultural products.

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.

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.

Described herein are examples of highly absorbent diaper cores including a top sheet, a super absorbent matrix, and a pulp layer. The super absorbent matrix can include a first non-woven distribution layer, a first super absorbent polymer layer, a cellulosic layer, a second super absorbent polymer layer, and a second non-woven distribution layer.

The utility model discloses a self-packaging phase change cold storage ball for air conditioner cold storage, which comprises a packaging shaping part and a cold storage core part, the packaging shaping part is made of thermoplastic resin, and the cold storage core part comprises a phase change cold storage material and a shaping support body capable of bearing the phase change cold storage material. The shaped support body is super absorbent resin particles, and the super absorbent resin particles adsorb a liquid phase change cold storage material to form super absorbent resin-based phase change cold storage material particles; the water-absorbent resin-based phase change cold storage material particles and the thermoplastic resin are kneaded and poured at a certain process temperature and pressure to form a spherical structure. By means of the mode, the self-packaging phase change cold storage ball for air conditioner cold storage is of a cold storage structure which is large in energy density and small in size, is easy to machine and form, has a good packaging effect, overcomes the defect that the ice ball is large in cold storage and heat exchange temperature difference, can store more cooling capacity in the small size, and ensures enough cold storage capacity.

The present disclosure relates to a preparation method for a super absorbent polymer film. Specifically, it relates to a preparation method for a new type of super absorbent polymer film, which is thin and exhibits excellent absorption performance. In addition, the super absorbent polymer film of the present disclosure has excellent flexibility and excellent mechanical properties, is free from scattering or leaking, and does not require an auxiliary substance such as pulp, so that products can be made thinner and the manufacturing process and costs may be reduced.

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 nonwoven 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 nonwoven material.

A pack with Super Absorbent Material (SAM) inside and without refrigerant fluid inside. A system for dispensing a cold pack including a filling unit for taking in a waterproof SAM pack with SAM inside and without refrigerant fluid inside and adding refrigerant fluid to an inside of the SAM pack, producing a refrigerant pack. Apparatus for producing a cold pack including a SAM source, a source of refrigerant fluid, a bag filler for filling a bag with a mixture of SAM and refrigerant fluid, producing a refrigerant pack, and a cooler for cooling the refrigerant pack, thereby producing a cold pack. Related apparatus and methods are also described.

The utility model discloses a super absorbent towel water absorption testing device which comprises a testing table, a sample frame is installed in the middle of the top of the testing table, the interior of the top of the sample frame is obliquely arranged, a filter screen is fixedly connected to the bottom of the interior of the sample frame, and pressing plates are arranged at the tops of the two ends of the sample frame. Two symmetrically arranged electric push rods are fixedly connected to the top of the test board, the output ends of the electric push rods are fixedly connected to the bottom of the end close to the pressing plate, a connecting frame is fixedly connected to the top of one end of the test board, a metering barrel is fixedly connected into one end of the connecting frame, and the bottom of the metering barrel communicates with a water outlet pipe; the bottom of the water outlet pipe is communicated with a shunt pipe, the top of the metering barrel is fixedly connected with a barrel cover, the top of the barrel cover is fixedly connected with a liquid level sensor, and the outer side of the water outlet pipe is communicated with an electromagnetic valve. The efficiency of the towel water absorption test is improved.

The utility model relates to the field of screening, in particular to an improved super absorbent resin screening device which comprises a main body, feeding ports are formed in the two sides of the top of the main body, a powder discharging pipe is arranged in the middle of the main body, a screening assembly is arranged in the main body and comprises a screening frame, and a screening net is arranged in the screening frame. And a screening frame is arranged outside the screening net. According to the super absorbent resin screening device, super absorbent resin is poured into the screening frame from the feeding opening and screened through the screening net, meanwhile, the vibrator is used for vibration, the super absorbent resin is rapidly screened and cannot be blocked, and meanwhile the suction fan in the powder discharging pipe is started for dust removal; and after screening is completed, the motor is started to drive the rotating rod to rotate to drive the screening frame to incline, defective waste is poured out of the discharging opening, and therefore the situation that intact super absorbent resin is mixed and poured out easily due to the fact that the screening frame is in the inclined state, and the integrity rate of screening is affected is avoided.

The present invention relates to a super absorbent polymer.

The invention provides a preparation and curing method of an ardealite cement stabilized macadam test piece matched with site construction, and belongs to the technical field of traffic civil engineering. A test piece comprises the following components in percentage by mass: 2-4% of cement, 5-15% of phosphogypsum, 0.1-0.3% of super absorbent resin and 80-95% of aggregate gravel, a rotary compaction process is matched with field compaction energy for forming, the test piece is moved indoors for natural curing to a corresponding age, and additional humidification and moisture preservation measures are not needed. According to the test piece, the defects that in the traditional technology, test piece forming is disjointed with a site construction technology, and the water stability of phosphogypsum is insufficient due to high-humidity maintenance are effectively overcome, the unconfined compressive strength of the test piece cured to the seventh day is 5.8-6.2 MPa, the actual performance of a site material can be accurately reflected, the solid waste resource utilization value is achieved, and the test piece is suitable for road base construction quality control.

The invention discloses a paper diaper with a composite absorption core body and a preparation method thereof, and relates to the technical field of disposable hygienic products, and the preparation method comprises the following steps: step 1, taking a layer of wrapping layer material, spreading, mixing wood pulp fibers with super absorbent resin particles, and laying to form an absorption layer; repeating for multiple times; covering a layer of wrapping layer material; performing hot-pressing compounding to form a composite absorption core body; 2, the composite absorption core, the flow guide layer material and the surface layer material are sequentially placed on the upper surface of the bottom layer, pressing, welding and cutting are conducted, and the paper diaper is obtained. According to the invention, tannic acid and polylysine are introduced into the SAP, the surface layer, the wrapping layer and the diversion layer non-woven fabric hydrophilic finishing film layer, so that the SAP is higher in absorption speed, higher in pressurized absorption amount and extremely low in back infiltration amount, and has a skin care effect; the non-woven fabric is endowed with lasting hydrophilicity, so that the whole paper diaper realizes the use experience of instantaneous absorption, wide diffusion, surface dryness and the like.