876results about How to "Fast water absorption" patented technology

The present invention provides one kind of water gel containing natural high molecular material and its preparation process. The water gel has cross-linking degree of 70-95 % and water absorption of 500-80000 %, and contains natural high molecular material or its derivative selected from chitin, chitin derivative, chitosan, chitosan derivative, carrageenin, etc. The water gel may have synthetic high molecular material, inorganic filler, cross-linking sensitizer, medicine and other assistant added. It is prepared through radiation cross-linking, with the radiation dosage being 10-40 kGy. The water gel of the present invention has high water absorption, high flexibility, good medicine slow releasing performance, and may be used in wound dressing, etc.

The invention discloses a preparation method of nylon fibers. The preparation method comprises the following steps: directly spinning after taking raw materials containing 1,5-pentamethylene diamine and adipic acid to react. The invention further provides the nylon fibers prepared by the method. The method adopts a manner of combining nylon polymerization and fusion direct spinning to prepare nylon 56 wires so that the production cost is reduced, the waste gas is reduced and the pollution to the environment is reduced. The high-performance nylon fibers prepared by the method can be further used for preparing textile materials including yarns, woven fabrics, knitted fabrics or non-woven fabrics, can be widely applied to the fields of clothing material industries, decoration carpets and the like, and has a wide industrial application prospect.

The invention relates to biocompatible modified starch sponge and use of the biocompatible modified starch sponge as a hemostatic material, an anti-adhesion material, a material for promoting tissue healing, a surgical sealant or a wound tissue adhesive. Modified starch is one or a combination of more than one among pre-gelatinized starch, acid modified starch, dextrin, oxidized starch, esterified starch, etherified starch, crosslinked starch, grafted starch and composite modified starch. The sponge is prepared by vacuum freeze drying of the modified starch and other biocompatible hemostatic material, coagulant, plasticizer and so on. The biocompatible modified starch sponge has the advantages that the biocompatible modified starch sponge has flexible form and good biocompatibility, can be directly acted on bloody wound surfaces, avoids the conditions of hypersusceptibility, infection and difficult healing of wounds caused by adoption of hemostatic materials such as animal source / human source collagens, obviously improves the water absorption speed, has larger viscosity, forms a zymoplastic mixture which has good adhesion, calks broken tissues and blood vessels, and is used for hemostasis of active hemorrhage.

The invention discloses a water-conservation fertilizer pertaining to agricultural fertilizer preparation technical field and containing various cations with a plurality of nutrition functions. The preparation method of the water-conservation fertilizer is that: acrylic acid monomers are partially neutralized by potassium hydroxide solution and next the pH value thereof is adjusted between 4 and 9 with ammonia; then acrylamide, cationic compound, cross-linking agent and initiator are added to the solution in sequence; and the mixture is stirred continuously and reacts quickly under the protection of nitrogen; at last super absorbent polymer is obtained; the super absorbent polymer of 90-99wt percent (dry weight) is mixed with sequestering agent of 1 -10wt percent (dry weight) to obtain the fertilizer. The water-conservation fertilizer has the functions of salt resistance, draught resistance, water saving and conserving, providing nutrition, delaying water releasing, promoting rooting and improving soil structure, and is widely applied in shelterbelt forest development, desert prevention and cure, highway slope protection, lawn construction, soil improvement, gardening and agricultural and forestry industries, etc.

The present invention provides a hygroscopic coating on a balloon for an implantable device and methods of making and using the same.

The preparation process of high water absorption resin includes following steps: neutralizing acrylic acid monomer with alkali solution to 60-90 % neutralizing degree, adding functional monomer in 0.5-50 % of total monomer weight, water soluble initiator or oxidation-reduction system in 0.05-0.5 % and water soluble cross-linking agent in 0.005-0.2 %; feeding the said mixed liquid into reactor, adding non-polar organic solvent in 2-10 times the volume of the mixed liquid and containing non-ionic surfactant, stirring to form inverse suspended polymerizing system; heating to 35-80 deg.c for free radical cross-linking copolymerization while adding oil soluble cross-linking agent in 0.005-0.3 % total monomer weight; dewatering after finishing polymerization, separation and drying to obtain the high water absorption resin. The obtained polyacrylate resin has the advantages of powerful water absorption, high salt tolerance, high gel strength and fast water absorption speed.

The invention relates to cat litter prepared from dry bean dregs and a preparation method thereof, wherein the cat litter is used for burying excrement and urine of pets. The cat litter is prepared from the following components through a series of processes including crushing, mixing and forming according to weight ratio: 5-90 parts of dry beam dregs, 10-90 parts of plant adhesive, 20-80 parts of filling agent, 0.1-10 parts of releasing agent, 0.1-5 parts of surface active agent, 0.01-3 parts of preservative, and 1-10 parts of deodorant. According to the invention, the cat litter prepared by the preparation method provided by the invention has the advantages of being wispy and hollow in surface, low in structural density, light in weight, higher in water absorption speed and better in water absorption performance; compared with other cat litters, the cat litter has the advantages of being more saving in use amount and higher in cost performance; after being used, the cat litter can be directly washed away through a sewer and cannot be blocked; the cat litter is convenient to clean; and the cat litter provided by the invention has the advantages of being environment-friendly, non-toxic, pollution-free, strong in absorption performance, simple in production process and free from wispy dust in production and transportation processes and has a deodorization function.

The invention discloses a sterilization and pasteurization material, comprising a substrate, wherein functional groups and sterilization and pasteurization components which can capture bacteria and / or virus are fixed on the surface of the substrate. The substrate is preferably made of non-weaving cloth with water-absorbing property. The invention also discloses a medical protective mask made of the sterilization and pasteurization material. Quaternary ammonium salt, sulfur-contained compounds and sulfoacid-contained compounds which are fixed on the surface of the sterilization and pasteurization material can be specifically combined with cell membranes of bacteria and viruses, actively captures the bacteria and the virus and can cause the sterilized and pasteurized components attached to the surface of the material to rapidly take effect. The sterilization and pasteurization material can rapidly kill the bacteria and viruses in five minutes. The medical protective mask has the functions of sterilization, antivirus, disease prevention, air purification and the like and can prevent the droplet transmission of the viruses.

The invention provides a spinning process of covering yarn with high hollowness degree, a prepared covering yarn and a process for weaving towel by utilizing the covering yarn. The spinning process comprises the following steps of: compositing and twisting two crude cotton yarns and water-soluble vinylon filament with number of 4.1-7.3 tex to prepare a spun yarn with cotton fiber covering the water-soluble vinylon filament; and hydrolyzing the water-soluble vinylon filament to obtain the covering yarn with the high hollowness degree. The strength and the hollowness degree of the covering yarn with the high hollowness degree, prepared by the spinning process disclosed by the invention, are higher than the strength and the hollowness degree of a common hollow covering yarn with the same yarn count, the overing yarn with the high hollowness degree is soft and fluffy and has strong water absorbability and improved heat insulation performance; and the woven towel prepared by the process of the invention is light and fluffy, and has good heat insulation performance and resilience, high water absorption speed, large unit-area water absorption amount and high drying speed.

The invention relates to a building material preparation process, in particular to a preparation process for brick substrates such as pervious bricks or floor bricks or concrete building blocks and the like. A method for preparing photocatalyst ecological bricks comprises the following steps that: A, waste ceramic impurities are crushed into crushed ceramic materials after being cleaned; B, wastefilter materials with main ingredients of diatomite and expanded perlite are dried, and then, rough filter material regenerated materials and fine filter material regenerated materials are sieved; C,the crushed ceramic materials and the rough filter material regenerated materials which are obtained in the steps A and B are mixed with ordinary portland cement and water and are stirred into dry concrete according to certain mass parts, the dry concrete is made into brick substrates, then, the fine filter regenerated materials, sand or stone dust, mineral pigment, white cement, nanometer titanium dioxide powder and water are mixed and stirred to be made into plus materials of the brick substrates, and the plus materials and the brick substrates are simultaneously pressed and formed; and D, the photocatalyst ecological bricks obtained in the step C are cured until the design strength is reached.

The present invention relates to the preparation process of chitosan base macroporous high water absorption resin. After chitosan is dissolved in dilute acetic acid solution, acrylic acid is made to graft on the molecular chain of chitosan under the initiation of ammonium or potassium persulfate and the product is cross-linked with cross-linking agent, so as to produce high water absorption chitosan grafted acrylic resin with distilled water absorption of 560-1210 g / g and physiological saline absorption of 76-125 g / g. The prepared resin is further modified via solvent deposition process to form macroporous structure to raise the water absorbing rate greatly. High efficiency liquid phase chromatographic test shows that the resin has greatly reduced acrylic acid monomer residue.

The invention discloses a control method for a cooking utensil. The cooking utensil comprises a pot body, an upper cover assembly provided with a steam channel, a switch assembly and a gas pump. The switch assembly is used for connecting or stopping the steam channel. The gas pump is used for pumping gas in a containing cavity outwards. The control method includes the following steps that after the cooling utensil enters the water absorbing stage, the switch assembly stops the steam channel, the gas pump is started to pump gas of the containing cavity, the gas pump stops running after running for the first time, the steam channel is connected through the switch assembly after the gas pump stops running for the second time, then the steam channel is stopped again through the switch assembly, the gas pump is started again for gas pumping, and circulation is repeated in this way till the water absorbing stage ends. According to the control method, the water absorbing rate of food can be increased, the water absorbing speed is increased, the water absorbing time is shortened, caking can be prevented, and it is guaranteed that the food is heated uniformly.

The invention discloses a macromolecule material cold keeping agent making method which consists of, preparing aqueous solution of polymers having strong hydrophilic radicals in the molecular structure, charging propenoic acid, hydroxyethyl methacrylate and maleic anhydride monomer, mixing homogeneously, charging bis-ethyl acrylate cross linking agent, agitating homogeneously, charging potassium peroxodisulfate initiating agent, mixing homogeneously, obtaining macromolecular material, dissolving into water of different mass.

A sandbag comprising an outer bag coarsely woven by strong fiber such as hemp; and a thin inner bag having high permeability such as cotton, which contains a water soluble pack made of such as polyvinyl alcohol film, having water swelling and absorptive resin. The double-layer-bag structure accelerates the water swelling and absorption speed by simultaneously preventing the leakage of the contents.

The invention discloses a manufacturing method of an ice bag for preserving biological products. The manufacturing method comprises the following steps: 1) adding a thickener into hot water or boiling water, and fully stirring till dissolution; 2) adding high molecular water-absorbing resin into a solution in the step 1) while hot, stirring, then standing to carry out full reaction and imbibition on the high molecular water-absorbing resin and the thickener, and forming a gelatinous solid, wherein the reaction time is 5-30minutes; and 3) bagging the gelatinous solid in the step 2), cooling, and then placing into a cold storage, a refrigerating cabinet or a refrigerator at the temperature of -10 DEG C to -20 DEG C for freezing for above 12hours. The invention provides a simple, convenient and high-efficient manufacturing method of a high molecular cold storage agent, namely the manufacturing method of the ice bag for preserving the biological products. The prepared cold storage agent has the advantages of high repeatability, great freezing-thawing phase change latent heat, long cold storage time and fast water absorption speed, and furthermore, the cost of the process is low; and by changing the added thickener, the different phase change temperatures can be obtained for meeting various different application requirements.

The present invention relates to an embossing device, which comprises a first embossing roller and a second embossing roller, wherein the two embossing rollers are mutually cooperated, and the surface of at least one of the two embossing rollers is provided with embossing patterns. The first embossing roller further comprises a first hot air source and a first housing sleeved around the first hot air source, wherein the first hot air source has a first air outlet for outputting hot air gas to the outside. The first housing is provided with a first injection port corresponding to the first air outlet. When the first injection port rotates and reaches a position coinciding with the first air outlet, the hot air provided by the first hot air source is injected from the first ejection port to form at least a bunch of hot air jet. The present invention further relates to a process for carrying out embossing by using the embossing device, a composite non-woven fabric absorber production device comprising the embossing device, a composite non-woven fabric absorber production process and composite non-woven fabric absorber products.

An ultra-strong water absorbent is prepared through adding water to konjak starch, gelatinizing at a certain temp., graft copolymerization by pumping locally netralized acrylic acid monomer, trigger and cross-linking agent while introducing N2 gas or Argno gas, spraying into a spiral tube type turbulence reactor, graft copolymerization, then screen extruding out, drying in a rolling drum type film forming dryer, and pulverizing to obtain granular product. Its advantages are high hydroscopicity (500-20000 times), and biodegradable.

The invention discloses a special organic tea seed cake fertilizer for paddy rice and relates to the technical field of bio-organic fertilizers. The organic tea seed cake fertilizer is prepared by the tea seed cake, bagasse, straw, an EM (effective microorganisms) microbial agent, a strain modifier, a poiser and a seaweed essence. The manufacturing steps comprise mixing of to-be-fermented materials, fermentation, air-curing and drying, pulverizing, mixing, granulation and the like. A product of the special organic tea seed cake fertilizer has the characteristics that the soil structure is improved, the effective microbial community of the soil is increased, diseases are resisted, insects are killed, and the like, and the heavy metal content of rice field soil and paddy rice can be also reduced.

This invention relates to a preparation method for poly-asparagic acid resin, which takes poly-pyrrolidine dione as the raw material to make crosslink poly-pyrrolidine dione with method of non-even phase suspended emulsion crosslink or non-even phase suspension crosslink and processes poly-asparagic acid resin by hydrolyzation characterizing that the crosslink poly-pyrrolidine dione is prepared by multi-section crosslink reaction, in which, the crosslinker is fed in for 2-4 times in equal volume and equal time interval, the crosslink poly-pyrrolidine dione and the resin are aged and crystallized and quickly dried, A ageing and crystallization process for 1-10 days under room temperature, B, quick drying process is carried out under -54-40deg.C.

The resin type water keeping agent is prepared with starch, acrylic acid and acrylamide as main material, oxidation-reduction system of potassium persulfate and sodium bisulfite as initiator, N, N-methylene bisacrylamide as crosslinking agent and through ternary grafting copolymerization. The preparation process includes the steps of: 1) gelatinizing starch, neutralizing acrylic acid with potassium hydroxide, cooling to room temperature and mixing with acrylamide aqua and gelatinized starch in a reactor; 2) adding crosslinking agent and initiator for polymerization under N2 protection; 3) regulating pH with alkali solution to neutral, washing the grafted product, drying and crushing to obtain white granular resin product. The resin type water keeping agent has fast water absorption, high water absorption rate and no destruction to soil structure, and can provide potash fertilizer.

The invention provides a method for preparing foamy high water absorption resin, which comprises the following steps of: putting a product cross-linked for 10 to 30 minutes at the gelatinization reaction temperature of between 100 and 150 DEG C into a microwave ceramic container or directly irradiating the product by using microwave, and generating the foamy high water absorption resin under the conditions that the microwave frequency is 2,450MHz, the power is 280 to 700W and the time is 1 to 5 minutes, wherein the fire fighting waste water absorption of the foamed resin is improved by 44 percent, the water absorption rate is improved by 80 percent, and the resin can be used for field control of fire fighting waste water. The microwave foaming does not need a foaming agent so as not to produce harmful dangerous gas or produce environmental pollution and safety risks; and subsequent cross-linking reaction and drying are performed at the same time during foaming, so drying equipment is saved, and the method is easy to realize large-scale production.

The invention relates to the field of a biomedical material, and particularly discloses a crosslinked alginate-bacterial cellulose sponge and a preparation method thereof. The crosslinked alginate-bacterial cellulose sponge takes an alginate biomaterial and bacterial cellulose as raw materials. The crosslinked alginate-bacterial cellulose sponge is characterized in that a sponge product is prepared from the alginate biomaterial and the bacterial cellulose in manners of crosslinking and freeze-drying after being compounded, wherein the alginate biomaterial accounts for 80-95% of the sponge product in mass fraction; the bacterial cellulose accounts for 5-20% of the sponge product in mass fraction. The crosslinked alginate-bacterial cellulose sponge is abundant in used material sources, low in cost, controllable to process, and simple in production technology; the prepared crosslinked alginate-bacterial cellulose sponge has good mechanical property, liquid absorption property, water retention capacity and air permeability, and is applicable to bleeding healing of large seepage or a bleeding wound.

The invention relates to a method for sorting dry and cool knitted underwear or shell fabrics, comprising the steps of: (1) preliminary treatment according to a conventional method of the enterprise; (2) washing with water; (3) the sorting of a temperature-sensitive type micro-capsule with hydrophobic core material; and (4) post-processing by using a hydrophilic agent. The underwear produced by using the method of the invention has good wet permeability and drying functions, can not only absorb the sudor perspired from the skin of a human body, but also drain the water in the clothes, thus causing the human body to be dry, cool and comfortable.

The invention discloses a preparation method of an accellular epimatrix, the accellular epimatrix prepared by the preparation method and application of the accellular epimatrix in the field of preparation of medical instruments. The preparation method of the accellular epimatrix comprises the following steps: carrying out pretreatment on tissues and organs of mammals to obtain an analogy tissue precursor; separately carrying out virus inactivation treatment, DNA eliminating treatment, accellular treatment and defatting treatment on the analogy tissue precursor to obtain an accellular epimatrixprecursor; and successively carrying out gradient dewatering treatment and crosslinking treatment on the accellular epimatrix precursor, and finally shaping and drying to obtain the accellular epimatrix. By the gradient dewatering treatment, the accellular epimatrix precursor is soaked in organic matter solutions of which the concentrations are successively increased successively. According to the preparation method of the accellular epimatrix, the tissue precursor is treated through gradient dewatering, and thus, the orderly structure of collagenous fibers of the finally prepared accellularepimatrix is not damaged.

The invention provides a non-woven material and a processing method thereof. The non-woven material is produced by processing 4 layers of materials, melt-blown nonwovens are placed between two layers of spunbond nonwovens to produce SMS compound nonwovens in accordance with SMS compound manufacturing technique, then the laminating technology is adopted to compound waterproof breathable layers on the SMS compound nonwovens to produce four layers of spunmelt hydrophilic anti-infiltration non-woven material, the non-woven material is finally made after going through the steps such as feeding, meltdown, filtration, measurement, spinning, stretching, cooling, web formation, hot air air-thru bonding and winding; the non-woven material is flexible, safe, sanitary and cheap, thus being widely applied in hospitals, nursing rooms, hotels and other hygiene medical systems.

The invention provides a double-layered composite biological dressing and an adhesive-free compound technology thereof. The double-layered composite dressing comprises a chitosan fiber non-woven fabric layer and a spongy-shaped functional layer, wherein no adhesive is needed to bond the two layers. The preparation technology comprises the following steps: (1) chitosan fiber non-woven fabric is pre-cooled; (2) macromolecule chitosan, macromolecule collagen protein, micromolecule collagen protein and micromolecule chitosan in mass ratio of 0.7-1.3 to 0.1-0.3 to 0.7-1.3 to 0.1-0.3 are added in a faintly acid aqueous solution to prepare a spongy layer material solution; (3) the pre-cooled chitosan non-woven fabric is taken out and the spongy layer material solution is rapidly and uniformly sprayed on the non-woven fabric, wherein the spraying amount is 20-60 ml / 20*20 cm<2>; (4) the chitosan non-woven fabric sprayed with the spongy layer material solution is freeze-dried. The prepared double-layered composite dressing is firm in embedding connection between the two layers; the spongy functional layer has the function of promoting wound healing and prevents adhesion; the chitosan fiber non-woven fabric layer has the functions of favorable air permeability, comfort and bacterium resistance.

The invention provides an electric rice cooker. The rice cooker has a pot housed inside the rice cooker body, an openable lid covering the upper opening of the pot, a bottom heating device for heating the bottom of the pot, a pot temperature detection unit for detecting the temperature of the pot, and a pot bottom control unit. The heating control part of the pot heating operation of the heating device, the rice stewing mode input part inputting any one of the rice stewing modes including the standard rice stewing mode and the energy-saving rice stewing mode, and the stewing rice mode input part according to the input. The rice mode and the detected temperature control the pot heating device to implement the rice cooking process. When the stewed rice control unit inputs the energy-saving stewed rice mode from the stewed rice mode input unit, in the soaking process, the pot heating device is controlled so that the detected temperature reaches a prescribed temperature within a prescribed time; after the prescribed time, The heating control unit is controlled to stop the heating operation of the pan heating device.

The invention provides a multiple-effect super absorbent resin fertilizer. In the manufacturing process, sodium hydrogen sulfite and ammonium persulfate oxidation-reduction type initiator are used as foundations, and ultraviolet initiation is used as an auxiliary means; N-N'-methylene bisacrylamide is used as a crosslinking foundation, and ethylene glycol diglycidyl ether and glycerol are used as auxiliary means; hydroxyethyl acrylate is added in the polymerized monomer, so that the colloid strength of the high molecular polymer is obviously improved; antioxidant, ultraviolet absorbent and light stabilizer are creatively introduced, thus finally manufacturing super absorbent resin having oxidation resistance, light resistance and degradation resistance; the super absorbent resin is organically combined with humic acid, microbial inoculant and an inorganic fertilizer to perform synergistic action, so that the various effective elements achieve the optimal use effect. Meanwhile, the consumption of the inorganic fertilizer is reduced, the salt content of soil is reduced, the pH value of the soil is improved, the soil environment is improved, and soil hardening is prevented, thus greatly increasing the utilization ratio of nitrogen fertilizers, phosphate fertilizers and potassium fertilizers, and achieving comprehensive effects of water saving, fertilizer saving, yield increase and outcome increase.

The invention relates to a preparation method of a high strength elastic slow-expansion water-absorption particle diverting agent, comprising the following steps of: according to the total mass of 100 percent, weighing 10-20 percent of monomer, 0.5-1percent of initiator, 0.01-0.1percent of crosslinker, 30-50 percent of natural rubber or / and 0.1-1.0 of speed control agent and the balance of water, generating the cross-linking polymerization reaction at the temperature of 40-80 DEG C to form a water absorption mesh and obtain an intermediate product; according to the intermediate product mass of 100 percent, adding 2.5-3 percent of sulfur, 0.5-1 percent of stearic acid, 3-5 percent of zinc oxide and 0.7-1.2 percent of thiol benzothiazole, and vulcanizing rubber by a mixing way at 140-145 DEG C and 14-15MPa to form a framework mesh, wherein within the range of room temperature to 80 DEG C, the framework mesh can absorb 5-30 times of water, slowly expands for 3-30 days, and needs two to three months for the complete expansion; and after water absorption, the framework mesh has the strength more than 20kPa. The diverting agent good depth arrangement, deformation and plugging capability.

The invention relates to an organic-inorganic composite water-absorbing material based on polyaspartic acid and nano montmorillonite and a preparation method thereof. The preparation method of the composite material can be carried out by two modes such as an in-situ polymerization method and physical blending and modification. In the in-situ polymerization method, a product is prepared by carrying out in-situ polymerization on montmorillonite and L-aspartic acid of polyaspartic acid monomer, and comprises the following components in parts by weight: 100 parts of L-aspartic acid and 2-10 parts of nano montmorillonite. In the blending and modification of the polyaspartic acid / nano montmorillonite, the improvement on the mechanical performance of polyaspartic acid resin is realized by the modification action of the montmorillonite on the polyaspartic acid, and the obtained product comprises the following components in parts by weight: 100 parts of polyaspartic acid and 2-15 parts of nano montmorillonite. The high-performance polyaspartic acid / nano montmorillonite composite material provided by the invention has the advantages of convenience in preparation, excellent water-absorbing performance, high water-absorbing rate, strong repeated water-absorbing capability, good salt resistance and high impact resistance and the like, and can be used for the fields of high-molecular water-absorbing materials and sand fixing agents and the like.