Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
37results about How to "Moderate water absorption" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Biodegradable agricultural high-absorbent resin and preparation thereof
The invention discloses a biodegradable agricultural super absorbent resin, which is prepared with the main raw materials by weight ratio as follows: 100 portions of crop biomass, 50-150 portions of acrylic acid, 200-1,000 portions of 1% sulfuric acid aqueous solution, 7-70 portions of sodium hydroxide, 0.25-10.0 portions of N,N`-methylene-bis-acrylamide as cross-linker, as well as at least an initiator selected among 0.5-15.0 portions of persulphate, 0.5-10.0 portions of ferric salt and 0.5-8.0 portions of sodium salt. The resin has good biodegradable performance, moderate water absorption, and greatly reduced costs. The invention also discloses a preparation method of the biodegradable agricultural super absorbent resin.
Owner:SICHUAN NORMAL UNIVERSITY
Probiotics microcapsule as well as preparation method and application thereof
InactiveCN109170235AGood biocompatibilityEasy to operateAnimal feeding stuffAccessory food factorsDecompositionBiocompatibility Testing
The invention provides a probiotics microcapsule as well as a preparation method and application thereof. According to the preparation method, the microencapsulation preparation of probiotics cells iscarried out by virtue of a natural controlled release material with good biocompatibility, a high molecular material with pH value sensitivity and a mild process based on a microcapsule preparation technique of ruminants. By granulating microcrystalline cellulose blank pellet core as a pellet-granulated film-forming core granule, the problems of low sphericity degree and poor particle uniformityin the granulation process are effectively solved, and the effects of a dilution-adhesion-disintegration three-purpose agent are simultaneously considered. By utilizing a double-layer coating technique, the probiotics microcapsule can respectively resist the decomposition of rumen microorganisms and the erosion of true gastric acid, so that bacteria can reach the intestinal tract as much as possible, and the effective field planting of microorganisms in the intestinal tract of a milk cow. The method has the beneficial effects that the operation is simple, the industrial microencapsulation preparation can be realized through the double-layer coating of a fluidized bed, and a set of effective process parameters are established for the industrial production of coated probiotics cells.
Owner:CHINA AGRI UNIV
Preparation method of agricultural drought-resistant type water retaining agent with good salt tolerance and low water absorbency
InactiveCN103554358AStrong salt toleranceAppropriate water absorption capacityOrganic fertilisersSoil conditioning compositionsSilicon dioxideChemistry
The invention discloses a technology for preparing an agricultural drought-resistant water retaining agent, which belongs to the field of one of the agricultural drought-resistant water retaining technologies. The technology is mainly characterized by comprising the following steps of: initiating the polymerization of acrylic acid and acrylamide monomers by using a nanometer silicon dioxide-ammonium persulfate compound system under a low-pressure heating condition. The water retaining agent prepared by using the technology is quite strong in salt resistance (70-120 times in absorbing normal saline), and proper in water absorbency (300-500 times), can resist drought and retain water in soil, simultaneously does not compete for water with plants, does not harden, and therefore can be widely applied to the fields of agriculture and desertification control for drought resistance and water retaining.
Owner:东北大学秦皇岛分校
Production method for watercolor writing and painting paper
ActiveCN107268316AAvoid damageBright colorPulp beating methodsDryer sectionPositive pressurePapermaking
The invention relates to a production method for watercolor writing and painting paper. The production method comprises the following steps: carrying out pulp preparation, carrying out papermaking by a paper machine, carrying out squeezing and drying before sizing, carrying out surface sizing, carrying out drying after sizing, carrying out slitting and packaging and the like. The production method selects 100% cotton pulp as a raw material and pulping treatment is performed by adopting a conical pulping machine; a fourdrinier multi-cylinder paper machine is used for carrying out the papermaking; needled felts with textures are mounted on upper and lower squeezing rollers of a positive pressure part of the paper machine respectively; in a squeezing and dehydration process, the textures of the felts are naturally transferred to surfaces of paper sheets to generate natural textures. The production method for the watercolor writing and painting paper is easy for processing and production; a technological process is simple and a formula of surface sizing liquid is simple; the production method is prone to operate and control and obtained product paper sheets have the natural textures and meet the characteristics of the watercolor writing and painting paper of water absorbability, washing resistance and scrubbing resistance, small deformation and long durability; and the production method is an ideal production method for the watercolor writing and painting paper.
Owner:SHANDONG KAILI SPECIAL PAPER
Concrete internal curing agent, preparation method and applications thereof
InactiveCN110746535AOvercome uneven heat transfer and difficult stirringThe preparation process is simple and controllableChemical synthesisPolymer science
The invention discloses a concrete internal curing agent, a preparation method and applications thereof, and belongs to the field of chemical synthesis. The preparation method comprises: 1) dispersingtwo emulsifiers in a dispersion medium at a room temperature to form an oil phase system, adjusting the neutralization degree of an anionic monomer aqueous solution, mixing the neutralized anionic monomer aqueous solution and a nonionic monomer aqueous solution, and adding a cross-linking agent and an initiator to form a water phase system; 2) under the protection of an inert gas, adding the water phase system into the oil phase system, and carrying out a reaction until a gel appears; and 3) taking the gel, washing, and drying to obtain the white powdery concrete internal curing agent. According to the invention, the concrete internal curing agent obtained by the preparation method is moderate in water absorption rate, integrates hydrophilic and alkali-resistant groups, ensures the moisture required by later hydration of cement, and reduces the negative influence on the strength of concrete after water release based on small particle size.
Owner:CHANGAN UNIV
Environment-friendly repeated-writing paper and preparation method therefor
ActiveCN107227651AEasy to wipeImprove writing effectNatural cellulose pulp/paperWater-repelling agents additionCleansers skinHandwriting
The invention discloses environment-friendly repeated-writing paper and a preparation method therefor. According to the environment-friendly repeated-writing paper and the preparation method therefor, a hydroxyl protective group is added into a nano bacterial cellulose suspension with excellent characteristics such as high water absorptivity and water retention ability and good water and air permeability, so as to lower hydrophilicity; a staged reaction is carried out under strong base conditions, so that bacterial cellulose reaches moderate water absorptivity and water retention ability, ink can only be present in a surface layer and be clear in writing while the ink is absorbed, and thus, writing, reading and subsequent handwriting wiping are facilitated; then, a scientifically-compounded dispersant is added, and ultrasonic and high-voltage pulse electric field combined dispersion is carried out, so that a stable and uniform modified bacterial cellulose suspension is obtained; finally, the surface of raw paper is coated with the suspension so as to obtain the writing paper with appropriate ink absorbing uniformity and adhesive power and a dense structure, thus, the writing property of the writing paper can be enhanced, and the clearness of writing is enhanced; and waterproofing and oil-proofing actions can be achieved, most importantly, ink marks on the paper can be erased with a cleanser and the paper can be reused for 40 to 100 times under the condition that the performance of the paper is not affected.
Owner:BEIJING GUANLAN TECH
Fresh potato non-fried convenient hot dry noodle and preparation method thereof
InactiveCN106962778AEvenly heatedReduce processFood ingredient as thickening agentFood preservationPhosphateRoom temperature
The invention discloses a fresh potato non-fried convenient hot dry noodle and a preparation method thereof. Thehot dry noodle comprises flour, fresh potatoes, salt, sodium carbonate, composite phosphate, gluten powder, sodium alginate and monoglyceride at a certain proportion. The preparation method comprises the following steps: (1) preparation of the fresh potatoes: washing potatoes with no decay and deterioration, peeling, cutting the potatoes into slices, putting the potato slices into a steamer and steaming; putting the steamed potato slices into a mortar, grinding the potato slices into a mud shape, putting the grinded potato mud into microwave and drying; (2) preparation of fresh noodles: uniformly mixing the obtained potato mud, kneading a dough, proofing under room temperature, putting formed noodles into a pot and boiling; (3) drying of the noodles: microwave drying the obtained fresh noodles. Thepreparation method has the advantages that the formula is reasonable, the energy consumption is reduced, and the production cost is lowered; more flavors and nutrients are endowed to the hot dry noodle. The fresh potato convenient hot dry noodle is non-fried, so that the safety and the preservability are greatly improved.
Owner:HUAZHONG AGRI UNIV
Film-coated base paper and production process thereof
ActiveCN105040507AReduce dosageQuantitative uniformReinforcing agents additionRosin additionSurface layerPulp and paper industry
The invention discloses film-coated base paper and a production process thereof. The process comprises the steps: mixing chemi-mechanical pulp, needle leave pulp, broad leave pulp and waste stuff to obtain film-coated base paper core layer pulp; mixing the needle leave pulp and broad leave pulp to obtain a surface layer pulp; mixing the needle leave pulp and the broad leave pulp to obtain surface layer pulp bottom layer pulp; facilitating the three parts of pulp to enter a pulp flow box by virtue of a quantization pump and then enter a net part to be composited, and then sequentially squeezing, drying, gluing, drying, press polishing to obtain a finished product. On the premise of guaranteeing the product quality, by improving the pulp proportion and the process, the waste stuff is added into the traditional process formula, so that the use amount of the chemi-mechanical pulp can be increased, the use amount of the broad leave pulp and the needle leave pulp can be reduced, and particularly the use amount of imported pulp can be reduced.
Owner:河南新亚新科技包装材料有限公司
Porous fibroin spinal marrow scaffold with directional releasing function as well as preparation method, preparation mold and application thereof
ActiveCN108310461AUniform pore sizeHigh porosityTissue regenerationProsthesisN-HydroxysuccinimidePore diameter
The invention belongs to the technical field of spinal marrow scaffolds and in particular relates to a porous fibroin spinal marrow scaffold with a directional releasing function as well as a preparation method, a preparation mold and application thereof. The method comprises the following steps: 1) preparing a fibroin water solution; preparing a hyaluronic acid solution; 2) mixing the fibroin water solution and the hyaluronic acid solution and adding EDC (1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide), NHS (N-hydroxysuccinimide) and MES (2-morpholinoethanesulfonic acid) in sequence and carrying out crosslinking reaction under an ice bath and sufficiently stirring; vacuumizing and de-foaming; then injecting a reaction solution into the preparation mold; putting the mold in a place at -80DEG C or below and freezing and molding; after molding, removing a silicone hose of the mold to obtain a sample; then freezing and drying the sample; after freezing and drying, obtaining the porous fibroin spinal marrow scaffold with the directional releasing function. According to the porous fibroin spinal marrow scaffold with the directional releasing function, a channel is prepared by utilizingan acupuncture needle and the channel can be uniformly and directionally distributed to obtain a fibroin / hyaluronic acid composite porous scaffold with a uniform material pore diameter, adjustable size, high porosity and good pore connectivity.
Owner:WUHAN TEXTILE UNIV
Cotton transfer printing paper and its machining method
InactiveCN101028775AModerate water absorptionGuaranteed contentDecorative surface effectsTransfer printing processChemical reactionSlurry
A transfer paper for printing on cotton fabric is composed of paper, isolating layer and dye layer. Its preparing process includes such steps as concentrating sodium silicate glass liquid, coating it on paper, baking, regulating the pH value of dye slurry to 4-5, printing the patterned dye layer on the surface of dried sodium silicate glass layer, and chemical reaction to generate an isolating layer between them.
Owner:无锡鸿辉纺织有限公司
Cross-linked polymer microsphere as well as preparation method and application thereof
ActiveCN112062899AImprove shear resistanceImprove resistance to shear damageDrilling compositionPolymer scienceMeth-
The invention discloses a cross-linked polymer microsphere as well as a preparation method thereof. The cross-linked polymer microsphere is prepared by adopting an inverse emulsion method, and the preparation method comprises the following steps: by taking an aqueous solution of a polymer monomer, an initiator and a cross-linking agent as an aqueous phase, adding an oil phase containing an emulsifier into the aqueous phase, stirring to form an emulsion taking oil as an external phase, and reacting to obtain the cross-linked polymer microsphere. The polymer monomer is a mixture of acrylamide, 2-acrylamide-2-methyl propanesulfonic acid and octadecyl acrylate in a mass ratio of 6:(0-3):(1-2), and the cross-linking agent is bisphenol propane and formaldehyde in a mass ratio of (1.5-2):1, and the mass fraction of the cross-linking agent in the water phase is 0.1%-1.5%. The cross-linked polymer microsphere has the advantages that the cross-linked polymer microsphere is good in shear resistance and other stability, the defects that an existing polymer microsphere is high in water absorption expansion rate, large in water absorption expansion multiple and poor in shear resistance are overcome, and the cross-linked polymer microsphere has wide application prospects in the field of deep profile control of oil reservoirs.
Owner:CHINA UNIV OF PETROLEUM (BEIJING) +1
Preparation method of frosted raw paper
ActiveCN108277695AMeet quality requirementsImprove uniformitySpecial paperWater-repelling agents additionPulp and paper industryPerformance index
The invention discloses a preparation method of frosted raw paper. The preparation method comprises the following process steps: firstly, mixing coniferous wood chips with broadleaved wood chips; thenperforming pulping; beating pulp again, proportioning pulp and adding auxiliaries; making wet paper sheets; performing prior drying; performing coating and glue application; performing post-drying. The frosted raw paper prepared by the method disclosed by the invention has the advantages of high quality of a product, high mechanical performance index, stable thickness, high evenness of paper sheets, and good oil-ink fixing performance; moreover, quality requirements of clients can be met.
Owner:YUEYANG FOREST & PAPER CO LTD
A kind of coated base paper and its production process
ActiveCN105040507BReduce dosageQuantitative uniformReinforcing agents additionRosin additionSurface layerPulp and paper industry
Owner:河南新亚新科技包装材料有限公司
Straw biomass seedling raising tray and preparation method thereof
InactiveCN110235651AIncrease profitPromote absorptionNitrogenous fertilisersCultivating equipmentsBiologyBinding force
The invention relates to the technical field of soilless culture, and particularly discloses a straw biomass seedling raising tray and a preparation method thereof. The straw biomass seedling raising tray is prepared from a straw fermented material, water, wood vinegar liquid and carbon-based fertilizer according to the weight ratio of (90-110):(9-12):1:0.2; the components of the raw materials of the straw biomass seedling raising tray cooperate with one another, so that the straw biomass seedling raising tray is rich in organic matter and various elements required for the growth of crops, reasonable in EC value, moderate in pH value, high in water absorption and good in permeability, the aim of preparing and applying the fertilizer according to the growth law of plants is truly achieved, and the healthy growth of seedlings is ensured. By adopting the seedling raising tray, the average seedling age is 15-20 days, the effective length of white stalks is up to 5.7 cm, the growth speed of the seedlings is increased, the seedling emergence rate of the seedlings reaches 99%, the binding force of root systems is up to 34.5 N, underground parts of the seedlings have long main roots and many fibrous roots, seedlings turn green quickly after being transplanted, straw is thick and strong, and the disease resistance and lodging resistance are improved.
Owner:BEIJING SANJU GREEN ENERGY TECH CO LTD
Antibacterial purple sand and preparation method thereof
InactiveCN112645685AStrong reductionGood antibacterial effectClaywaresZincum oxydatumStaphyloccocus aureus
The invention provides antibacterial purple sand which takes a purple sand base material and an antibacterial material as raw materials, the antibacterial material takes tetrapod-like zinc oxide, ethylene glycol polyoxyethylene ether, lanthanum oxide and cerium oxide as main raw materials, and the antibacterial purple sand is prepared by the following steps: dissolving lanthanum oxide and cerium oxide and then adjusting the pH value to 7-9. after combustion, adding into a turbid liquid composed of tetrapod-like zinc oxide, ethylene glycol polyoxyethylene ether and water, drying, firing, and grinding with a composite additive and ethylene glycol polyoxyethylene ether to obtain the product. The purple sand base material and the antibacterial material can be well fused, the obtained antibacterial purple sand has good antibacterial performance, the antibacterial performance on staphylococcus aureus reaches 99.99%, the forming performance and using performance of the purple sand are not affected due to addition of the antibacterial material, and the obtained antibacterial purple sand is moderate in water absorption rate, the thermal shock resistance is good, lead and cadmium are not contained, the deformation of the product is small, leakage is avoided, and the use performance is good.
Owner:包头中科陶瓷科技有限公司
Preparation method of silk fibroin/hydroxyapatite/collagen composite porous stent
A preparation method of a silk fibroin / hydroxyapatite / collagen composite porous stent comprises the following steps: filling a mixture of NaCl and hydroxyapatite into an injector, wherein the mixture has a particle size of 100-425 microns and a mass ratio of NaCl and hydroxyapatite of 1:0.02-0.08; adding a mixed solution of a collagen aqueous solution with a mass fraction of 6% and a silk fibroinaqueous solution with a mass fraction of 6%, wherein each gram of NaCl is added with 1 ml of the mixed solution; pushing the piston handle of the injector to allow the mixed solution to pass the mixture of NaCl and hydroxyapatite; allowing the mixture to stand at room temperature for 24 hours; taking out the bonded block from the injector, soaking and washing. The invention can prepare stents with various pore sizes by adjusting the particle sizes of NaCl, and the prepared stent has a uniform pore size, high porosity, good pore connectivity, moderate water absorption and expansion rate. Test results show that the stent has good in-vitro and in-vivo biocompatibility.
Owner:SHAANXI NORMAL UNIV
Preparation method of acid-base double-layer core-shell nanotube/SPEEK composite proton exchange membrane
ActiveCN110010941AImprove the upstream industry chainImprove performanceFuel cellsDispersityDistillation
The invention relates to a preparation method of an acid-base double-layer core-shell nanotube / SPEEK composite proton exchange membrane. The method prepares an acid-base double-shell nano tube by a continuous two-step distillation-precipitation polymerization method, PMAA is selected as an inner shell polymer because the PMAA has a carboxylic group and has a high hydration energy and water absorbing capacity, PVI is selected as an outer shell polymer to enhance the dispersity of the nano tube in the matrix and optimize the proton transfer carrier so as to improve the proton conductivity. The preparation method provided by the invention can overcome the problems that an SPEEK membrane is poor in mechanical property caused by easy water loss or easy swelling in water under the high temperature and the low humidity, and ensures the high proton conductivity, high water retention and good dimensional stability of the composite PEM.
Owner:HEBEI UNIV OF TECH
A kind of cement ceiling board with adjustable humidity and preparation method thereof
ActiveCN109650811BImprove flexural strengthAvoid fragileCeilingsConstruction materialPolymer scienceCement board
The invention belongs to the field of building materials, in particular to a cement ceiling board and a preparation method thereof. The cement ceiling board is composed of polypropylene fiber mesh cloth and cement boards, wherein the polypropylene fiber mesh cloth is laid between the cement boards to form a cement ceiling board composed of upper, middle and lower layers. The present invention lays the polypropylene fiber mesh cloth in the middle of the cement board when preparing the cement ceiling board. When the thickness of the prepared cement ceiling board is relatively thin, the cement board can be provided with good flexural strength, and the cement board can be avoided during processing. The board is easily broken, so cement can be used to make ceiling boards, and the prepared ceiling boards are light in weight and easy to process and install.
Owner:UNIV OF JINAN
A kind of protective paper and preparation method thereof
ActiveCN107385990BAvoid wet deformationReduce wet deformationNon-fibrous pulp additionPaper/cardboardFiberPolypropylene
The invention relates to protective covering paper and a preparation method thereof, belonging to the technical field of building materials. The protective covering paper is prepared from the following raw materials: 80-100 parts of modified wood fibers, 10-15 parts of polypropylene-based isothiocyanate, 5-8 parts of carboxymethyl cellulose, 3-5 parts of shell-lac and 60-70 parts of water. The modified wood fibers are prepared by the following steps: beating needle leaf wood fibers, mixing the pulp with a calcium chloride solution, adding a sodium carbonate solution dropwise, stirring for carrying out reaction, then filtering and washing to obtain the modified wood fibers. The polypropylene-based isothiocyanate is prepared by the following steps: mixing mustard seeds with water, heating the mixture, taking out and drying, crushing, squeezing, and filtering to obtain filtrate; mixing the filtrate with anhydrous ethanol, then adding a catalyst, stirring for carrying out reaction, and distilling. The protective covering paper prepared by the method is better in bonding property with a gypsum board, does not easily have the phenomena of layering and blistering, and is higher in strength.
Owner:江苏源清环保科技有限公司
Degradation-controllable superabsorbent resin and its preparation method
ActiveCN111548464BHigh densityImprove water absorptionPhysical/chemical process catalystsOrganic fertilisersPolymer sciencePtru catalyst
The invention relates to degradation-controllable super absorbent resin and a preparation method thereof. The whole resin is of a three-dimensional network structure, and is composed of a three-dimensional network matrix and slow-release degradation catalyst particles dispersed in the three-dimensional network matrix; a molecular chain of the three-dimensional network matrix is composed of an acrylic acid chain segment, a sodium acrylate chain segment, an acrylic acid-2-ethylhexyl ester chain segment, an acrylamide chain segment and a diacrylamide-terminated polyether polyurethane (cross-linking agent) chain segment; the slow-release degradation catalyst particles are a PBS-coated solid acid catalyst. The preparation method comprises the following steps that: with acrylic acid, sodium acrylate, acrylic acid-2-ethylhexyl ester, and acrylamide adopted as reaction monomers, diacrylamide-terminated polyether polyurethane as a cross-linking agent and slow-release degradation catalyst particles as an additive, polymerization reaction is carried out under the action of an initiator to prepare the degradation-controllable super absorbent resin. The method disclosed by the invention is simple; and the prepared resin is not degraded within 2-3 years and is completely degraded within 6 months after being used.
Owner:DONGHUA UNIV
Artificial bedding for laboratory mice
An artificial bedding for experimental mice, which is composed of natural fiber main raw materials, elastic fiber by-materials and adhesives for appearance shaping, and the sterile artificial bedding is edible and does not affect the experimental results . The main fiber raw material of the present invention has both moderate elasticity, water absorption, light weight and edible properties, the fiber auxiliary material has both moderate elasticity and edible properties, and the binder is starch with both moderate gluing properties and edible properties In addition to the general functions of water absorption and deodorization, the artificial padding can also have the characteristics of being edible; and, after forming and packaging, the air in the packaging can be evacuated through vacuum equipment, and when desired When in use, under the action of the elastic auxiliary material of the present invention, the artificial cushion can still have the function of returning to its original state after vacuum compression.
Owner:谢明义 +1
A kind of manufacturing method of matte base paper
ActiveCN108277695BMeet quality requirementsImprove uniformitySpecial paperWater-repelling agents additionWoodchipsIndustrial engineering
The invention discloses a preparation method of frosted raw paper. The preparation method comprises the following process steps: firstly, mixing coniferous wood chips with broadleaved wood chips; thenperforming pulping; beating pulp again, proportioning pulp and adding auxiliaries; making wet paper sheets; performing prior drying; performing coating and glue application; performing post-drying. The frosted raw paper prepared by the method disclosed by the invention has the advantages of high quality of a product, high mechanical performance index, stable thickness, high evenness of paper sheets, and good oil-ink fixing performance; moreover, quality requirements of clients can be met.
Owner:YUEYANG FOREST & PAPER CO LTD
Preparation method of agricultural drought-resistant type water retaining agent with good salt tolerance and low water absorbency
InactiveCN103554358BStrong salt toleranceAppropriate water absorption capacityOrganic fertilisersSoil conditioning compositionsSilicon dioxideChemistry
The invention discloses a technology for preparing an agricultural drought-resistant water retaining agent, which belongs to the field of one of the agricultural drought-resistant water retaining technologies. The technology is mainly characterized by comprising the following steps of: initiating the polymerization of acrylic acid and acrylamide monomers by using a nanometer silicon dioxide-ammonium persulfate compound system under a low-pressure heating condition. The water retaining agent prepared by using the technology is quite strong in salt resistance (70-120 times in absorbing normal saline), and proper in water absorbency (300-500 times), can resist drought and retain water in soil, simultaneously does not compete for water with plants, does not harden, and therefore can be widely applied to the fields of agriculture and desertification control for drought resistance and water retaining.
Owner:东北大学秦皇岛分校
Nutritional soil water retention composition as well as preparation method and application thereof
ActiveCN113402328AImprove water absorptionPromote decompositionAnimal corpse fertilisersBioloigcal waste fertilisersCelluloseSoil science
The invention discloses a nutritional soil water retention composition, which is prepared from the following ingredients in parts by weight: 30 to 70 parts of oyster shell-water retention agent mixtures, 1 to 10 parts of hydroxypropyl methyl cellulose and 10 to 20 parts of dehydrated xylitol residues. The oyster shell-water retention agent mixture comprises the following components: oyster shell powder and a water retention agent, wherein the use amount of the water retention agent is 1-20wt% of the mass of the oyster shell powder. The invention further discloses a preparation method of the nutritional soil water-retention composition and an application of the nutritional soil water-retention composition in soil improvement. The nutritional water-retention agent provided by the invention not only can provide elements such as calcium, magnesium, strontium and the like required by soil, but also has a synergistic effect with the water-retention agent with a three-dimensional grid structure, so that the prepared nutritional water-retention agent plays a stronger role in water and fertilizer retention, improves the soil environment and increases the crop yield.
Owner:烟台凯多海洋生物研究院有限公司
Production technology of pulp board
InactiveCN104594102AHigh and stable whitenessHigh strengthChemical/chemomechanical pulpPaper-making machinesChemical treatmentChlorine dioxide
The invention discloses a production technology of a pulp board. The production technology of the pulp board comprises the following steps: sequentially and continuously cooking by virtue of a sulphate process, carrying out oxygen delignification treatment, and carrying out chlorine dioxide bleaching to obtain reed pulp; carrying out a production technology combining alkaline hydrogen peroxide pretreatment with defibrination chemical treatment to obtain poplar chemi-mechanical pulp; blending 15-30wt% of the obtained reed pulp with 70-85% of the obtained poplar chemi-mechanical pulp to obtain slurry without adding auxiliary materials, colour mixing or gluing; and carrying out wire section moulding on the obtained slurry according to a jet-wire speed ratio of 1.0+ / -0.01 and wire loading concentration of 0.9-1.5%, so that the pulp board is obtained. The production technology of the pulp board is simple and low in manufacturing cost and has the environment-friendly advantage, and the pulp board produced by adopting the production technology is good in strength, moderate in water absorption property, strong in air permeability, flat and rough and bright in colour.
Owner:周锦和
Alkaline fuel cell anion exchange membrane and preparation method thereof
InactiveCN113013455AStrong film forming abilityImprove mechanical propertiesFuel cellsIon-exchange membranesIonic conductivity
The invention discloses an anion exchange membrane for an alkaline fuel cell and a preparation method of the anion exchange membrane. The semi-interpenetrating quaternized polysulfone / polyquaternium-10 anion exchange membrane is a PQ-10 / CMPSU anion exchange membrane. The QPSU / PQ-10 anion exchange membrane provided by the invention has good oxidation resistance and alkali resistance, and the ionic conductivity can reach 69.91 mS / cm.
Owner:SICHUAN UNIV
Porous silk fibroin spinal cord scaffold with directional release function, its preparation method, preparation mold and application
ActiveCN108310461BUniform pore sizeHigh porosityTissue regenerationProsthesisAcupuncture needlesPolymer science
The invention belongs to the technical field of spinal cord support, and in particular relates to a porous silk fibroin spinal cord support with directional release function, a preparation method, a preparation mold and application thereof. The method comprises steps: 1) preparing an aqueous silk fibroin solution; preparing a hyaluronic acid solution; 2) mixing the silk fibroin aqueous solution and the hyaluronic acid solution, and then adding EDC, NHS and MES in sequence to perform a cross-linking reaction in an ice bath, Thoroughly stir, vacuumize and defoam, then inject the reaction solution into the preparation mold, and then freeze the mold below -80°C for molding, remove the silicone tube of the mold after molding to obtain a sample, and then freeze-dry the sample. The porous silk fibroin spinal cord scaffold with directional release function was obtained after freeze-drying. The invention uses acupuncture needles to prepare channels, which can make the channels evenly and directionally distributed, and obtain a silk fibroin / hyaluronic acid composite porous scaffold with uniform material pore size, adjustable pore size, high porosity and good pore connectivity.
Owner:WUHAN TEXTILE UNIV
Two-component nano-polymer sand-fixing material and sand-fixing method
ActiveCN104388095BImprove performanceHigh sand-fixing strengthOther chemical processesOrganic fertilisersEpoxyN dimethylformamide
Owner:NORTHWEST NORMAL UNIVERSITY
Preparation method of oligosiloxane composite proton exchange membrane containing azole ring
The invention relates to a preparation method of an oligosiloxane composite proton exchange membrane containing an azole ring. The method comprises the following steps: adding a first monomer to reactwith a second monomer to obtain a third monomer; under the action of an initiator, reacting the third monomer with a fourth monomer to obtain an oligosiloxane nano-filler PGA containing an azole ring; mixing the PGA with a matrix, casting the obtained mixed solution onto a glass plate, and drying to obtain a composite film (SPEEK / PGA-X). The high-performance and low-cost proton exchange membraneobtained by the invention can be widely applied to fuel cells, and has important significance and key effects on reducing the cost of the fuel cells, perfecting an upstream industrial chain of the fuel cells and promoting the development of the field of new energy.
Owner:HEBEI UNIV OF TECH
Biodegradable agricultural high-absorbent resin and preparation thereof
Owner:SICHUAN NORMAL UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com