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61 results about "Gum cellulose" patented technology
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Cellulose is a tough carbohydrate that comes from the cell wall of plants. Cellulose gum, which may also appear on the label as carboxymethylcellulose, is made by reacting the cellulose, which comes from wood pulp or cotton lint, with an acid.
High-strength transparent cellulose material and preparation method thereof
ActiveCN101880410AGood mechanical propertiesImprove thermal stabilityMonocomponent cellulose artificial filamentSpinning solutions preparationSupercritical dryingCellulose
The invention discloses a transparent high-strength fiber material. The preparation method comprises the following steps that: cellulose is dissolved in NaOH-urea aqueous solution or LiOH-urea aqueous solution which is pre-cooled at low temperature to obtain a cellulose solution, and different thicknesses of cellulose hydrogels are prepared by the cellulose solution; water in the cellulose hydrogel is replaced into an organic solvent to obtain a cellulose organic gel; the cellulose hydrogel or the cellulose organic gel is subject to supercritical drying, ambient pressure drying or freeze drying to remove a liquid medium so as to obtain a cellulose aerogel; and the cellulose hydrogel, the organic gel or the aerogel are autoclaved at a temperature of 30-200 DEG C under the pressure of 10-160Mpa to obtain the high-strength transparent cellulose material. The cellulose material prepared by the invention has excellent mechanical properties, thermal stability and optical permeability.
Owner:WUHAN UNIV
Water-soluble thick oil viscosity reducer
InactiveCN101906295ALow viscosityReduce dosageDewatering/demulsification with chemical meansDrilling compositionPolyvinyl alcoholActive agent
The invention discloses a water-soluble thick oil viscosity reducer belonging to the technical field of emulsified viscosity reducers of viscous crude oil. The water-soluble thick oil viscosity reducer is prepared from the following components in parts by weight: 0.01-1.0 part of surface active agent, 0.01-1.0 part of dispersant and 0.01-0.6 part of demulsifier, wherein the surface active agent is a nonionic surface active agent selected from OP-10, TX100, Span80 and Tween80, the dispersant is a water-soluble polymer material selected from polyacrylamide, polyvinyl alcohol, guar gum and cellulose, and the demulsifier is a polyoxyethylene-polyoxypropylene segmented copolymer. The invention has good emulsifying and viscosity-reducing effects, the emulsified crude oil can be automatically demulsified to reach a dehydration rate over 95 percent, and the viscosity reducer has little consumption and low cost by adopting low-price materials.
Owner:SICHUAN HAIDUN PETROLEUM NEW TECH DEV
Method of Hydrolyzing an Organic Compound
A method of hydrolyzing an organic compound (in particular, polysaccharides such as starch, guar gum, or cellulose), characterized in that the hydrothermal reaction is performed in hot water with a pressure of 5 to 100 MPa and a temperature of 140 to 300° C., containing carbon dioxide being added by pressure application.
Owner:CHUO UNIVERSITY
Safety belt pre-tightening instrument gas production medicine and preparation method thereof
The gas forming agent for safety belt pre-fastener consists of nitrocellulose 60-90 wt%, combustion improver 1-10 wt%, oxidant 1-20 wt% and adhesive 1-10 wt%. The combustion improver is one or several selected from boron powder and inflammable metal powder; the oxidant is one or several selected from nitrate, chlorate and perchlorate; and the adhesive is one or several selected from phenolic resin, shellac varnish, bone glue, cellulose-base polymer and its salt. The gas forming agent for safety belt pre-fastener has no combustion residue, high gas producing rate and excellent safety belt fastening performance.
Owner:BYD CO LTD
Cellulose-Based Hydrogels and Methods of Making Thereof
ActiveUS20130032059A1High tensile strengthIncreasing the thicknessMovable spraying apparatusOptical articlesCelluloseBiocompatibility Testing
The present invention provides cellulose hydrogels having one or more of the following properties: high water content, high transparency, high permeability, high biocompatibility, high tensile strength and an optimal thickness. The present invention further provides a process for preparing a cellulose hydrogel comprising: (i) contacting cellulose with a solvent to activate the cellulose; (ii) optionally removing the solvent from the activated cellulose; (iii) substantially dissolving the activated cellulose to form a solution; (iv) allowing the solution to gel; and optionally (v) drying the gel and rehydrating the gel. The cellulose hydrogel can have many uses, including uses as contact lenses.
Owner:THE JOHN HOPKINS UNIV SCHOOL OF MEDICINE
Puffed potato chips and preparation method thereof
The invention relates to a puffed leisure food, in particular to puffed potato chips with less nutrient loss and easy digestion, and a preparation method thereof. The puffed potato chips are preparedfrom the following raw materials: potato, salt, gelatin and water of which the ratio in weight portion is 20-400:5-10:2-4:10-30. The puffed potato chips have scientific formula and simple preparationprocess; and the adopted potato contains rich starch, saccharides, proteins, fat, various vitamins, pectin, cellulose, inorganic salt and the like, so the puffed potato chips have rich nutrient. The potato is puffed by microwaves and prepared into crisps, and the prepared products can completely maintain the original nutrients; and the powerful sterilization function of the microwaves avoids the use of a preservative. The products are golden yellow, crispy, delicious and oilless, do not contain a reinforcer and the preservative, are suitable for the old and the young, and can be eaten for a long time in leisure, travels, outdoors and the like.
Owner:冀登昌
Silver-loaded copper ferrite magnetic nanometer composite fiber and preparation method and application thereof
InactiveCN102154817ALarge specific surface areaExtended service lifeBiocideFibre treatmentHollow fibreSpinning
The invention discloses a sliver-loaded copper ferrite magnetic nanometer composite fiber and a preparation method and application thereof and relates to the technical field of inorganic nonmetallic materials and preparation thereof. The preparation method comprises the following steps of: performing chemical reaction on citric acid, copper nitrate and ferric nitrate which serve as raw materials to prepare precursory sol; decompressing and dehydrating to obtain precursory gel with certain viscosity; spinning to obtain gel cellulose fiber; calcining the obtained gel cellulose fiber at appropriate temperature and air atmosphere to obtain an objective product CuFe2O4 hollow fiber; loading sliver on the obtained CuFe2O4 fiber by an immersion method; and drying and calcining at a certain temperature and air atmosphere to obtain Ag / Cu Fe2O4 nanometer composite fiber. The preparation method has the advantages of simplicity, low requirements on equipment, low cost, short operation cycle and the like; and the Ag / Cu Fe2O4 fiber is obtained by loading silver by the immersion method, and the prepared fiber has high antibacterial activity and long service life. As the carrier CuFe2O4 has certain magnetism, the fiber can be recycled possibly.
Owner:JIANGSU UNIV
Cellulose-based hydrogels and methods of making thereof
ActiveUS8871016B2High tensile strengthIncreasing the thicknessMovable spraying apparatusOptical articlesCelluloseBiocompatibility Testing
The present invention provides cellulose hydrogels having one or more of the following properties: high water content, high transparency, high permeability, high biocompatibility, high tensile strength and an optimal thickness. The present invention further provides a process for preparing a cellulose hydrogel comprising: (i) contacting cellulose with a solvent to activate the cellulose; (ii) optionally removing the solvent from the activated cellulose; (iii) substantially dissolving the activated cellulose to form a solution; (iv) allowing the solution to gel; and optionally (v) drying the gel and rehydrating the gel. The cellulose hydrogel can have many uses, including uses as contact lenses.
Owner:THE JOHN HOPKINS UNIV SCHOOL OF MEDICINE
Tablet coatings made from modified carboxymethylcellulose materials
InactiveUS20080274182A1Reduce molecular weight rangeReduce manufacturing costBiocideOrganic active ingredientsCoated tabletsMedicine
Coated tablets for the delivery of active ingredients to a user are provided. Such tablets include particular molecular weight-modified carboxymethylcellulose (CMC) coating materials either alone or in combination with other types of hydrocolloids, biogums, cellulose ethers, and the like. The utilization of such modified CMC products aids in the production of such coatings through the availability of larger amounts of base materials with lower amounts of water requiring evaporation therefrom. In such a manner, not only may dimensionally stable, non-tacky, salt tolerant, and quick dissolving edible coatings be produced, but the amount of time required for such manufacture is minimal when compared with traditional methods of production with -based materials. Furthermore, such novel edible non-digestible tablet coatings exhibit delayed dissolution beyond a user's oral cavity for tastemasking purposes, as well as protection of the tablet from environmental conditions and low tackiness properties to prevent adhesion to the user's palate. The novel method of tablet coating manufacture as well as the ultimate coated tablets exhibiting such physical characteristics are also encompassed within this invention.
Owner:CP KELCO
Stem explosion-based continuous extraction method for tobacco
ActiveCN102391393AHigh yieldContinuous extractionTobacco treatmentPaper material treatmentChemical industryPulp and paper industry
The invention relates to the field of chemical industry, in particular to utilization of tobacco. The method comprises the following steps of: crushing dried tobacco powder into powder with grain diameter of not less than 20 meshes; adding water medium in an amount which is equivalently 10-30 times the volume of the tobacco powder to fully soak; performing steam explosion pretreatment to obtain steam explosion pretreatment solution, wherein pressure of the steam explosion pretreatment is not less than 0.04MPa, and the pretreatment time is not less than 60 seconds; and extracting hemicellulose, pectin, cellulose and lignin sequentially and respectively. By using the method, the yield of the hemicellulose reaches up to 90.7 percent, the yield of the pectin reaches up to 12.3 percent, the yield of the cellulose reaches up to 93.6 percent, and the yield of the lignin reaches up to 90.9 percent; and the substances can be continuously extracted.
Owner:CHONGQING HENGYUAN JINTONG TECH
Efficient formaldehyde purification water-based sepiolite paint and preparation method thereof
InactiveCN109825145AGood heat storage stabilityImprove adsorption capacityAntifouling/underwater paintsAlkali metal silicate coatingsIonTitanium dioxide
The invention discloses efficient formaldehyde purification water-based sepiolite paint which is prepared from, by weight, 15-25 parts of deionized water, 5-25 parts of sepiolite, 0.1-5.0 parts of surface modifying agents, 10-50 parts of inorganic mineral fillers, 0.5-5.0 parts of magnesium aluminum silicate inorganic gel, 0.5-5.0 parts of function additives, 0.5-5.0 parts of anti-mildew and antibacterial materials, 5-25 parts of bonding materials, 5-25 parts of titanium dioxide, 0.1-5.0 parts of pigments and 0.2-1.0 part of cellulose. The preparation method includes the steps: 1) preparing suspension liquid from sepiolite and deionized water, dispersing the suspension liquid at high speed to form gel-like substances, and heating mixture to reach the temperature of 60-70 DEG C, and addingthe surface modifying agents; 2) preparing suspension liquid from magnesium aluminum silicate inorganic gel, and dispersing the suspension liquid to prepare pregel; 3) adding the function additives into the deionized water to stir mixture, adding the inorganic mineral fillers, the titanium dioxide, the sepiolite prepared in the step 1), the magnesium aluminum silicate inorganic gel prepared in thestep 2) and the cellulose to stir mixture, and adding the bonding materials, the anti-mildew and antibacterial materials and the pigments. The paint removes odor and is environmentally friendly, resistant to formaldehyde and excellent in heat storage stability.
Owner:湘潭海泡石科技有限公司
High-performance heat-preservation plastering mortar prepared from industrial solid waste and preparation method thereof
The invention discloses high-performance heat-preservation plastering mortar prepared from industrial solid waste and a preparation method thereof. The high-performance heat-preservation plastering mortar is composed of the components: the industrial solid waste, cement, natural sand, expanded perlite, anti-cracking fibers, dispersed sol, cellulose ether and an additive, wherein the industrial solid waste is any kinds of molybdenum tailing sand, steel slag sand, phosphogypsum, red mud, mineral slag and fly ash; the dispersed sol component comprises diatomite, an ethylene-vinyl acetate copolymer, methyl methacrylate, a titanate coupling agent and cumene hydroperoxide; the cellulose ether is hydroxypropyl methyl cellulose ether; and the additive is water glass, starch ether and a polycarboxylic acid high-efficiency water reducing agent. The prepared plastering mortar is suitable for an external heat-preservation system of an expanded polystyrene board external wall. According to the invention, a large amount of industrial solid waste harmful to the environment can be consumed, the self-repairing pressure of the environment is reduced, and the prepared mortar has good mechanical properties, durability and thermal insulation capability.
Owner:苏州国中新材料研究院有限公司
Soybean protein and edible glutinous rice starch floor glue and preparation method thereof
InactiveCN105567117AExcellent low temperature elasticityImprove stress resistanceNon-macromolecular adhesive additivesProtein adhesivesBiotechnologyPotato starch
The invention discloses a soybean protein and edible glutinous rice starch floor glue and a preparation method thereof. The floor glue comprises deionized water, soybean proteins, sweet rice flour, corn starch, rice flour, coix seed powder, cassava starch, wheat starch, potato starch, fish gelatin, cellulosic ethanol, sodium lignosulfonate, xanthan gum, acetyl tributyl citrate, ethyl acetate, sodium benzoate and ethylene glycol. A result of -30 ~ -50 DEG C refrigeration cycle 3-time freeze thaw test shows that the preserving rate of the adhesiveness and the peeling strength is 85-95%, the formaldehyde content is 0.01-0.2g / kg, and the adhesion stress is 60-70kPa.
Owner:南星家居科技(湖州)有限公司
Method for extracting saponin in plants through microbial fermentation
InactiveCN108997443AHigh yieldHigh purityNon-ionic surface-active compoundsGlycosidesCelluloseCleansing Agents
The invention provides a method for extracting saponin in plants through microbial fermentation. The method comprises the following steps: firstly, extracting saponin in sapindus mukurossi peel and Chinese honeylocust fruits by using deionized water, respectively removing impurities in an extracting solution by using deionized water and an ethanol solution, then degrading saccharides, proteins, pectin, cellulose and other substances in the extract by adopting microorganism yeast, and finally, further purifying the saponin in the extract by utilizing cation exchange resin and AB-8 macroporous adsorption resin in sequence, so that the saponin yield and the purity of the saponin in the extract can be improved to the maximum extent. In addition, due to the fact that the saponin shows certain weak alkalinity, the saponin can be salified and dissolved in an acid solution and can be precipitated under an alkaline condition. Therefore, the saponin is refined by adopting a hydrochloric acid ethanol-ammonia water precipitation method, and the preparation method is simple to operate, and is scientific and reasonable. The saponin extracted by the method of extracting saponin in plants throughmicrobial fermentation can be directly used in various cleaning agent products.
Owner:李晌
Magnetic nanocomposite fiber and preparation method and application thereof
InactiveCN102000577AImprove conversion rateHigh catalytic activityOrganic compound preparationCarboxylic acid esters preparationTrans esterificationPolymer science
The invention discloses a magnetic nanocomposite fiber and a preparation method and application thereof, and relates to the technical field of inorganic nonmetallic materials and preparation thereof. The preparation method comprises the following steps of: performing chemical reaction on citric acid and metal salt of calcium and iron serving as raw materials to prepare a precursor sol; dehydrating under reduced pressure to obtain a precursor gel; spinning to obtain gel cellulose silk; and calcining the gel cellulose silk under the protection of reducing atmosphere (hydrogen and nitrogen) at aproper temperature to obtain a target product, namely a CaO / alpha-Fe nanocomposite fiber. The fiber has uniform diameter, large length-diameter ratio, high magnetism and a special hollow structure. The method has the advantages of simple process, low equipment requirement, low cost, short operating period and the like. Meanwhile, the magnetic nanocomposite fiber prepared by the method can be usedin transesterification as a solid alkaline catalyst and has high catalytic activity and long catalytic life. The existence of the alpha-Fe component makes the simplification of the separation and recovery of the catalyst possible.
Owner:JIANGSU UNIV
Glass etching composition, and method for manufacturing Anti-glare glass
InactiveCN110753736AEmbodies anti-glare characteristicsGreat cost savingsSurface treatment compositionsMaltoseMaterials science
A glass etching composition comprises: a basic etchant for etching glass; and a syrup obtained by hydrolyzing starch, wherein the syrup can comprise at least one of glucose, maltose and dextrin, and the basic etchant can comprise hydrofluoric acid, ammonium fluoride and water. The glass etching composition can further comprise at least one of starch powder, Fibersol, pectin, locust bean gum, gelatin, guar gum, xanthan gum, gum arabic, cellulose, PEO and PVA. A method for manufacturing anti-glare glass comprises a first etching step of screen printing a first glass etchant on glass, wherein thefirst glass etchant comprises: a basic etchant for etching glass; and a syrup obtained by hydrolyzing starch, wherein the glass can have greater chemical durability than soda-lime glass. The method additionally comprises a second etching step of etching the glass with a second glass etchant after the first etching step.
Owner:CORNING INC
Hyaluronic acid water-moistening facial mask
InactiveCN111297787AGood moisturizing effectAdd waterCosmetic preparationsToilet preparationsTremellaGlycerol
The invention discloses a hyaluronic acid water-moistening facial mask. The facial mask comprises a first component, a second component and a third component, wherein the first component comprises thefollowing components in percentage by mass: 81.50-83.50% of water, 4.50-5.50% of propylene glycol, 1.50-2.50% of glycerol, 0.25-0.35% of xanthan gum, 0.15-0.25% of sclerotium gum, 0.15-0.25% of cellulose, 0.05-0.15% of sodium hyaluronate, 0.15-0.25% of allantoin, 0.03-0.06% of disodium EDTA, 0.15-0.25% of tremella polysaccharide, 1.50-2.50% of erythritol, 0.45-0.55% of panthenol and 0.25-0.35% ofhydroxyacetophenone. According to the invention, the first component, the second component and the third component are uniformly combined together through scientific and reasonable proportioning to prepare the hyaluronic acid water-moistening facial mask. Moisturizing performance of the facial mask is improved through matching of propylene glycol, glycerol, sodium hyaluronate, erythritol and PCAsodium, so that the facial mask not only can supplement moisture and nutrients of skins, but also can improve the moisturizing effect of the skins and increase moisture retention of the skins, and then the skins are moistened, clear and charming, and are softer and brighter.
Owner:广州峻美生物科技有限公司
Gel cellulose compound film and preparation method thereof
The invention belongs to the technical field of composite materials and provides a preparation method of a gel cellulose compound film. The preparation method comprises the following steps: dissolving cellulose in an alkaline solution to obtain a cellulose solution, performing defoaming treatment, substrate film forming, solidification in a solidification bath and freezing and drying to obtain a solid cellulose film; and loading PHBH on the obtained solid cellulose film in a PHBH solution to obtain a PHBH-cellulose compound film, and performing hot pressing to obtain the gel cellulose compound film. According to the preparation method provided by the invention, the production cost of the compound film can be reduced, the prepared gel cellulose compound film is compact in structure and has a good mechanical property, the air permeability is reduced effectively, and the gel cellulose compound film can be fully degraded in a natural condition and is environmentally friendly.
Owner:TIANJIN UNIV OF SCI & TECH
Tremella polysaccharide and its preparation method and application
ActiveCN112029006BHigh yieldImprove efficiencyCosmetic preparationsToilet preparationsPectinaseEnzymatic hydrolysis
Owner:广州善合化工有限公司
Impregnation rotary spinning equipment for preparing gelatin/cellulose 3D scaffold for cell culture meat production
InactiveCN113215670AEfficiently obtainedControl characterizing propertiesArtificial thread manufacturing machinesConjugated cellulose/protein artificial filamentsManufacturing cellSkeletal muscle cell
The invention relates to impregnation rotary spinning equipment for preparing a 3D scaffold for cell culture meat production. A gelatin / cellulose 3D scaffold manufactured by the equipment can be used for culturing skeletal muscle cells, support is provided for manufacturing cell culture meat, and the equipment belongs to the field of future food science and technology. The method comprises the following steps: driving a sample storage device to rotate at a certain speed (100-200r / min), then adding a gelatin / cellulose solution mixed according to a certain proportion into the sample storage device, throwing the mixed solution into a shaping solution (ethanol solution) in a collecting cylinder in a filamentous form through a sample outlet hole in the side of the bottom of the sample storage device, fixing the gelatin / cellulose mixture into filamentous fibers in the shaping solution, and further stacking the filamentous fibers to form the loose and porous gelatin / cellulose 3D scaffold. The gelatin / cellulose 3D scaffold has good cell compatibility, and skeletal muscle cell culture can be carried out on the 3D scaffold. The invention provides a good device and method for preparing the cell culture meat 3D scaffold.
Owner:NORTHWEST A & F UNIV
Magnetic sulphonated carbon-based nanofiber, preparation method for same and application thereof
ActiveCN102505186AReduce churnImprove bindingPhysical/chemical process catalystsFatty acid esterificationBiodieselSpinning
The invention relates to the field of inorganic nonmetal materials, in particular to a magnetic sulphonated carbon-based nanofiber, a preparation method for same and application thereof. Glucose and ferric nitrate are proportionally mixed and dissolved and chemically react to prepare precursor sol, the precursor sol is subjected to decompression dehydration to obtain precursor gel with certain viscosity, the precursor gel is spun into gel cellulose fibers, the obtained gel cellulose fibers are incompletely carbonized at 350-400 DEG C in the presence of N2, and then 95% concentrated sulfuric acid 200ml is added to the carbonized gel cellulose fibers for sulphonating at 80-100 DEG C for 8 hours. Initially, the magnetic sulphonated carbon-based nanofiber with uniform diameter, large specific surface area, larger length-diameter ratio and high magnetism is prepared from the glucose and the ferric salt by means of organic gel precursor conversion and under actions of incomplete carbonization and sulphonation, and is highly active when used for catalyzing conversion of high-acid grease into biodiesel. Recycling the nanofiber is possible due to a certain magnetism of the nanofiber.
Owner:JIANGSU UNIV +1
Seed coatings, coating compositions and methods for use
ActiveUS10745578B2Promote plant growthImprove adhesionBiocideCellulose coatingsPolymer sciencePotato starch
Owner:SPECIALTY OPERATIONS FRANCE
A kind of preparation method of waterproof cellophane
The invention relates to the technical field of packaging paper, and particularly relates to a method for preparing waterproof cellophane. Emulsified paraffin and an acrylic acid monomer are subjectedto an emulsification reaction initiated by potassium thiosulfate to obtain modified emulsified liquid paraffin; bagasse is subjected to alkalization and yellowing to obtain cellulose viscose; after the cellulose viscose and the modified emulsified liquid paraffin are mixed and subjected to film drawing, a product is put into a coagulating bath and then taken out; and the product is subjected to water washing, alcohol washing and drying to obtain the waterproof cellophane. An esterification reaction allows distances among wood fibers to be reduced, thus improving waterproofness of the cellophane. The modified emulsified liquid paraffin has large bond energy and is a hydrophobic group, thus facilitating waterproofness improvement. Crosslinking occurs during film drawing because of the existence of acrylic acid so that compactness of the liquid paraffin that is a surface protective film of the viscose is improved and cellulose in the cellophane hardly absorbs water through the compact protective film, and therefore waterproofness of cellulose is improved and the cellophane has a wide application prospect.
Owner:广东冠豪新材料研发有限公司 +1
Waterproof, breathable and puncture-proof safety shoe upper and manufacturing method thereof
InactiveCN110353354AEffective protectionImprove comfortSynthetic resin layered productsLaminationCelluloseEpoxy
The invention provides a waterproof, breathable and puncture-proof safety shoe upper and a manufacturing method thereof. The safety shoe upper comprises a moisture absorption inner layer and a waterproof and puncture-proof outer layer, the formula of the moisture absorption inner layer is as follows: jute fiber, polyester fiber, cotton fiber, corn fiber and bamboo charcoal fiber; the waterproof and puncture-proof outer layer sequentially comprises a puncture-proof adhesive and a waterproof membrane from inside to outside, the formula of the puncture-proof adhesive is as follows: epoxy resin, acuring agent, carbomer, latex, cellulose, 1,4,5,8-tetrachloroanthraquinone, and 2-allyl methacrylate; and the waterproof membrane is an expanded polytetrafluoroethylene microporous membrane. The moisture absorption inner layer of the shoe upper disclosed by the invention is blended and woven by a plurality of fibers, so that the shoe upper can be effectively protected, and the comfort of use canbe improved due to the moisture absorption effect; and the waterproof and puncture-proof outer layer can make up the defects of the insufficient puncture-proof performance of the shoe upper, and provides certain puncture-proof performance and waterproof performance for the shoe upper.
Owner:TIANJIN TIANXING KESHENG LEATHER PROD
Environment-friendly biodegradable food packaging box
The invention discloses an environment-friendly biodegradable food packaging box. The food packaging box is prepared from, by weight, 30-45 parts of sweet potato starch, 8-12 parts of hydroxypropyl methyl cellulose, 1-2 parts of a plant fiber modifier, 3-8 parts of an antibacterial solvent, 4-6 parts of polyethylene glycol, 1-2 parts of an emulsion adhesive, 0.05-0.1 part of cellulase, 1-3 parts of polyol, 6-8 parts of chitosan and 6-8 parts of a composite filler. The sweet potato starch, the hydroxypropyl methyl cellulose, the plant fiber modifier, the antibacterial solvent, the polyethyleneglycol, the emulsion adhesive, the cellulase, the polyol, the chitosan and the composite filler are matched; the food packaging box is prepared through the procedures of mixing, stirring, drying, extrusion forming and the like, the needed technological process is simple, manufacturing materials of the packaging box are all degradable materials, after the food packaging box is used up, unmanned treatment is conducted in time, the food packaging box can be slowly degraded, harm of the food packaging box to the nature is reduced, and the food packaging box belongs to an environment-friendly biodegradable packaging box.
Owner:DONGGUAN POLYTECHNIC
Gel electrode doped with polyaniline in situ and preparation method and application of gel electrode
ActiveCN113658806AIncrease independenceOmit configurationHybrid capacitor electrodesHybrid/EDL manufactureCapacitanceComposite electrode
The invention discloses a gel electrode doped with polyaniline in situ. The gel electrode comprises cellulose / dealkalized lignin aerogel and polyaniline doped in the cellulose / dealkalized lignin aerogel, wherein the cellulose / dealkalized lignin aerogel is formed by crosslinking cellulose and dealkalized lignin. The invention also discloses a preparation method of the gel electrode doped with polyaniline in situ. The preparation method comprises the steps of 1) crosslinking cellulose and dealkalized lignin to prepare cellulose / dealkalized lignin aerogel; 2) performing oxidative polymerization on the cellulose / dealkalized lignin aerogel and aniline to obtain a cross-linked composite electrode material; and 3) cleaning the composite electrode material to be neutral, freeze-drying, and performing high-pressure treatment to obtain the cross-linked composite electrode. The invention also discloses a method for preparing a supercapacitor by using the gel electrode doped with polyaniline in situ. The C / DL-PANI composite electrode material prepared by the invention has the characteristics of improved electrochemical performance, better independence, excellent mass specific capacitance, lower charge transfer resistance and the like.
Owner:GUANGXI UNIV
Preparation method of plant-source long-acting mosquito-repellent composite functional filament
PendingCN114150392AAvoid bitesNo allergies and other discomfortMonocomponent polyesters artificial filamentArtifical filament manufactureMosquito bitePlant Sources
The invention provides a preparation method of a plant-source long-acting mosquito-repelling composite functional filament. The preparation method comprises the steps of preparation of plant-source mosquito-repelling components, preparation of cellulose nano-porous aerogel, modification, preparation of plant-source mosquito-repelling functional master batches and spinning. SiO2 is embedded into the cellulose nano-porous aerogel, the porous structure of the cellulose nano-porous aerogel is supported, the cellulose nano-porous aerogel is not prone to collapse, the cellulose nano-porous aerogel can be soaked in a plant source mosquito repelling component solution again to be recycled after being washed for multiple times, long-acting mosquito repelling is achieved, and compared with a traditional mosquito repelling mode, the method is more environmentally friendly. After being woven into a fabric, the plant-source long-acting mosquito-repelling composite-function filament can be washed for more than 50 times and can be continuously recycled by soaking and adsorbing mosquito-repelling essential oil, odor emitted by the fabric can purify air and drive mosquitoes, a human body is effectively prevented from being bitten by the mosquitoes, and the fabric has a long-acting mosquito-repelling function. Meanwhile, the human body does not have any uncomfortable phenomena such as allergy.
Owner:南通荣荟新材料科技有限公司
Thixotropic and self-curing material for slip-form construction concrete and preparation method thereof
The invention relates to a thixotropic and self-curing material for slip-form construction concrete. The material comprises, by mass parts, 3-15 parts of polycarboxylate water reducing agent; 0.2-1 part of lauryl sodium sulfate; 2-6 parts of sodium dodecyl benzene sulfonate; 0.1-0.5 part of xanthan gum; 0.5-1.2 parts of cellulose ether; 0.02-0.2 part of internal curing agent; the balance water. The invention also relates to a preparation method of the thixotropic and self-curing material. The thixotropic and self-curing material can effectively overcome the defects such as pitting, cracking, orange peel, bulging, collapse and slipping of the slip-form construction concrete structure, and is smooth and level in appearance, capable of achieving slip-form molding rapidly and capable of achieving concrete self curing.
Owner:河北久联建筑工程有限公司
Use of a matrix for orally administering sustained release magnesium, and composition containing said matrix
Owner:JOANNY FABIENNE
Super-dispersed zero-valent metal solid catalyst for water treatment, and preparation method thereof
InactiveCN110801867AWide pH rangeWater treatment parameter controlWater treatment compoundsPtru catalystCarboxylic acid
The invention relates to a super-dispersed zero-valent metal solid catalyst for water treatment, and a preparation method thereof. The catalyst is prepared by the following method: dissolving a transition metal salt in a first solvent; dissolving or dispersing a carboxylic acid (phenol) compound in a second solvent; mixing a transition metal salt solution and a carboxylic acid (phenol) compound solution to obtain a transition metal complex; adding montmorillonite into the metal complex; and then adding a borohydride, and performing stirring, filtering, washing and oven-drying. The metal catalyst can relatively thoroughly decompose polymers commonly used in oilfields such as guar gum, cellulose, starch, and polyacrylamide, a viscosity reduction rate is 90% or more, and the chemical oxygen consumption is reduced by 95% or more.
Owner:XI'AN PETROLEUM UNIVERSITY
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