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55 results about "Synthetic membrane" patented technology

An artificial membrane, or synthetic membrane, is a synthetically created membrane which is usually intended for separation purposes in laboratory or in industry. Synthetic membranes have been successfully used for small and large-scale industrial processes since the middle of twentieth century. A wide variety of synthetic membranes is known. They can be produced from organic materials such as polymers and liquids, as well as inorganic materials. The most of commercially utilized synthetic membranes in separation industry are made of polymeric structures. They can be classified based on their surface chemistry, bulk structure, morphology, and production method. The chemical and physical properties of synthetic membranes and separated particles as well as a choice of driving force define a particular membrane separation process. The most commonly used driving forces of a membrane process in industry are pressure and concentration gradients. The respective membrane process is therefore known as filtration. Synthetic membranes utilized in a separation process can be of different geometry and of respective flow configuration. They can also be categorized based on their application and separation regime. The best known synthetic membrane separation processes include water purification, reverse osmosis, dehydrogenation of natural gas, removal of cell particles by microfiltration and ultrafiltration, removal of microorganisms from dairy products, and Dialysis.

Thioether cross-linked solid polymer electrolyte membrane as well as preparation method and application thereof

PendingCN121983662AFacilitate dissociationlower activation energySecondary cellsPolymer scienceAcyl group
The invention relates to the technical field of electrolyte, in particular to a thioether cross-linked solid polymer electrolyte membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: taking N, N-dimethylformamide, respectively adding 3, 6-dioxa-1, 8-octane dithiol and triglycidyl isocyanurate, and uniformly stirring to obtain a mixed solution; adding bis (trifluoromethylsulfonyl) imide lithium into the mixed solution, putting magnetons on a magnetic stirrer, and completely dissolving the magnetons to obtain a precursor solution; and pouring a proper amount of the precursor solution into a polytetrafluoroethylene mold, spreading, and carrying out cross-linking polymerization in a blast oven to form the film. The three-dimensional thioether cross-linked network structure has a large number of weakly coordinated thioether groups, dissociation of lithium salt can be promoted, a large number of free Li < + > is generated, the number of Li < + > is increased, meanwhile, the crystallinity of a polymer is remarkably reduced, the ionic conductivity is improved, the mechanical stability of a film can be improved, and the service life of a battery is effectively prolonged.
Owner:WUHAN TEXTILE UNIV

Acetonitrile electrolyte and sodium ion battery and soft package battery thereof

The invention discloses an acetonitrile electrolyte and a sodium ion battery thereof, and aims to provide an electrolyte which not only can keep the advantage of high conductivity of acetonitrile and widen the electrochemical window of the electrolyte, but also can be well compatible with a positive electrode and a negative electrode to form a stable interface. The invention also provides a sodium ion battery capable of improving the rate capability of the acetonitrile electrolyte and realizing ultrafast charge. The acetonitrile electrolyte comprises a solvent acetonitrile, wherein a composite film-forming agent, NaPF6 and NaClO4 are added into the acetonitrile; the mass ratio of the acetonitrile to the composite film forming agent to the NaPF6 to the NaClO4 is 100: (2 to 5): (17.1 to 20.3): (0.78 to 3.11); the composite film-forming agent is composed of vinylene carbonate and ethylene sulfate; belongs to the technical field of sodium-ion batteries.
Owner:SUN YAT SEN UNIV

Multi-material synthetic membrane separation equipment for sewage treatment

The invention discloses multi-material synthetic membrane separation equipment for sewage treatment, and belongs to the technical field of sewage treatment, the multi-material synthetic membrane separation equipment comprises a support and tank bodies which are arranged in a transverse linear array and fixedly connected in the support, permeable membranes are arranged in the tank bodies, and water diversion components are arranged on the inner sides and the outer sides of the tank bodies; the water diversion component comprises top covers which are in threaded connection with the upper end and the lower end of the tank body, and guide pipes are fixedly connected to the ends, away from each other, of the top covers on the upper side and the lower side. As sewage entering the extension pipe passes through the threaded channel before being discharged into the permeable membrane, the threaded channel not only can improve the shearing force, so that pollutants are difficult to deposit on the surface of the permeable membrane, but also can reduce concentration polarization after a boundary layer is damaged by spiral disturbance, so that the sewage flux is further improved, and the baffle block can change the water flow direction. And the shearing force at the corners of the permeable membrane is enhanced.
Owner:SHANDONG GUOZHIYAO ENERGY TECHNOLOGY CO LTD

Liquid film-forming agent for preventing crops from freezing injury due to late spring coldness and preparation method of liquid film-forming agent

The invention relates to the field of agricultural biochemical engineering and plant protection, and particularly discloses a liquid film-forming agent for preventing crops from freezing injury due to late spring coldness and a preparation method of the liquid film-forming agent. The film-forming agent is prepared from carboxymethyl chitosan, sodium carboxymethyl cellulose, kasugamycin, brassinolide, glycol and glycerol mixed dihydric alcohol, Tween 80 and deionized water according to a specific proportion. The preparation method comprises the key processes of step-by-step dissolution, mixing, functional component addition and the like. Organic fusion of physical barrier, ice nucleus inactivation and physiological regulation is realized through multiple action mechanisms of natural polymer composite film forming, biopesticide targeted sterilization, plant hormone induced cold resistance and dihydric alcohol synergistic antifreezing. The product can provide efficient protection at a low temperature of-4 DEG C, significantly reduces the frost damage rate, has the characteristic of 28-day natural rapid degradation, and solves the technical bottlenecks of single function, difficult degradation and poor environmental compatibility of a traditional film agent.
Owner:AGRI SCI RES INST OF THE SECOND DIVISION OF XINJIANG PROD & CONSTR CORPS

Composite insulation paper based on micro-channel homogenization technology and preparation method thereof

The invention discloses composite insulation paper based on a micro-channel homogenization technology and a preparation method of the composite insulation paper. The method comprises the following steps: homogenizing a vermiculite powder solution or a boron nitride powder solution in a high-pressure homogenizing reactor under the pressure of 800-1400 bar for 0.5-5 hours, and freeze-drying to obtain two-dimensional vermiculite sheet powder or hydroxylated boron nitride nanosheet powder; the obtained powder and a PVDF solution are compounded, and a two-dimensional vermiculite nanosheet powder / PVDF spinning solution and hydroxylated boron nitride nanosheet powder / PVDF slurry are obtained; and performing electrostatic spinning or coating to obtain the composite insulation paper. The composite insulation paper is obtained by using the high-pressure homogeneous reactor, lamellar stripping and sub-control adjustment of the particle size, and composite film forming or spinning with PVDF, and the method has the advantages of simple operation, rapidness and high efficiency. Effective bridging assembly of inorganic nanosheets and organic polymer materials is achieved, high-performance composite insulation paper is obtained, and ultrahigh pollutant degradation efficiency is shown.
Owner:HANGZHOU DAYI TECHNOLOGY CO LTD

Environment-friendly water-based high-temperature sintering ink

The invention belongs to the technical field of high-temperature sintering ink, and particularly relates to environment-friendly water-based high-temperature sintering ink, which is prepared from the following components in percentage by mass: 15 to 30 percent of modified water-based silane-acrylic acid composite film-forming agent, 30 to 60 percent of high-temperature functional filler, 1 to 5 percent of bio-based dispersing agent, 0.5 to 2 percent of green defoaming agent, 2 to 8 percent of environment-friendly coalescing agent and the balance of deionized water, the printing ink is free of heavy metals and volatile harmful solvents, after the printing ink is sintered at 400-1200 DEG C, a coating and a base material form chemical bonding, and the adhesive force level reaches the first level.
Owner:ANHUI WUYUE CHEM TECH CO LTD

An Ag / TiO2 / Ag3PO4 / chitosan quaternary ammonium salt / lignocellulose nanofiber / starch composite membrane, its preparation method and application

This invention discloses an Ag / TiO2 / Ag3PO4 / chitosan quaternary ammonium salt / lignocellulose nanoparticles / starch composite membrane, its preparation method, and its applications, relating to the field of fruit and vegetable preservation technology. Chitosan quaternary ammonium salt, starch, glycerol, lignocellulose nanoparticles, and Ag / TiO2 / Ag3PO4 photocatalyst are mixed in water, and the starch is gelatinized by heating to obtain a composite film-forming solution; this solution is then cast to obtain the Ag / TiO2 / Ag3PO4 / chitosan quaternary ammonium salt / lignocellulose nanoparticles / starch composite membrane. The chitosan quaternary ammonium salt in the composite membrane can modify the surface of the Ag / TiO2 / Ag3PO4 photocatalyst, and its polar groups can form a hydrogen bond network with the hydroxyl groups of cellulose and starch, improving the composite membrane's ability to enrich ethylene and the interfacial bonding force between the photocatalyst and the matrix, thereby enhancing the composite membrane's adsorption and degradation effect on ethylene. The chitosan quaternary ammonium salt and the photocatalyst form a dual long-lasting antibacterial effect—both photoresponsive and contact-type—synergistically improving the antibacterial performance of the composite membrane.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY

Modified graphene material and preparation method thereof

The invention relates to the technical field of graphene materials, and discloses a modified graphene material and a preparation method thereof.The preparation method comprises the steps that sodium lignin sulfonate is used for modifying graphene oxide through pi-pi stacking, and water-based stable dispersion liquid is prepared; saponified abietic acid is introduced, so that a abietic acid radical tricyclic hydrophobic skeleton is attached to the surface of graphene; compounding tung oil emulsion, performing free radical oxidation polymerization on alpha-eleostearic acid conjugated triene double bonds at the normal temperature of 15-35 DEG C to form a film, and covalently bonding graphene into an organic film-forming system through phenol-oxygen free radical coupling; zinc borate is added, zinc ions catalyze and solidify and promote generation of zinc abietate, and borate radicals and sodium lignin sulfonate hydroxyl form an inorganic borate cross-linked network; and adjusting the solid content and grinding to obtain a finished product. The prepared conductive ink is self-dried and cured at normal temperature, a cured coating has excellent water resistance and conductive stability, and the conductive ink is suitable for a heat-sensitive flexible base material.
Owner:HUNAN SANMO NEW MATERIAL CO LTD

Composite film-forming agent as well as preparation method and application thereof

The invention discloses a composite film-forming agent as well as a preparation method and application thereof, and aims to provide a composite film-forming agent which can remarkably improve the fitting degree and tensile property of base makeup on the skin surface, enhance the glossiness of the makeup surface, improve the hydration degree of the skin, strengthen the moisturizing effect and form a layer of oleophylic makeup-holding film and a moisturizing film with enhanced hydrophilic capacity. Therefore, a dual film forming effect is achieved; according to the technical scheme, the cleaning agent comprises 4-14% of isododecane; the invention relates to a silicone sealant which is prepared from the following components in percentage by weight: 5 to 40 percent of trimethylsiloxane silicate, 5 to 40 percent of hydrogenated (styrene / methyl styrene) indene copolymer, 30 to 40 percent of cyclopentasiloxane (and) PEG / PPG-18 / 18 polydimethylsiloxane, 0 to 12 percent of polyvinyl pyrrolidone, 0 to 1 percent of polyquaternium-51 solution and 10 percent of water, wherein the sum of the components is 100 percent. The invention belongs to the technical field of cosmetics.
Owner:GUANGZHOU ZHONGTONG BIOCHEMICAL PROD CO LTD

Metal chelate film forming agent, preparation method and application thereof

The present application relates to the field of environment-friendly metal surface pretreatment technology, and discloses a metal chelating film forming agent, a preparation method and application thereof, wherein low-molecular polysilazane resin and zirconium triethanolamine compound are used as film forming agents, epoxy modified silicone resin is used as an auxiliary film forming agent, aspartic acid diacetic acid tetrasodium is used as a chelating dispersant, tetramethyl decyne glycol is used as a wetting agent, n-butanol is used as a leveling agent, and interface stable graphene with Schiff base functional groups, quinoline functional groups and quaternary ammonium salt functional groups on the surface is used as a corrosion-resistant filler to prepare the metal chelating film forming agent, wherein the present application is environmentally friendly, and after the leak detection process of the compressor muffler, no alkaline cleaning agent is needed for cleaning and treatment, and the subsequent spraying can be directly performed, on the other hand, the metal substrate surface can be combined by physical adsorption and chemical adsorption to produce strong bonding force, and a dense protective film is formed on the metal substrate surface, thereby achieving the beneficial technical effect of significantly improving the corrosion resistance.
Owner:HEFEI LUTUO NEW MATERIAL TECH CO LTD

Inorganic-organic composite solid electrolyte membrane and method for manufacturing the same

This invention provides an inorganic-organic composite solid electrolyte membrane and its preparation method, belonging to the field of solid electrolyte membrane technology. The invention uses anisole and tetrahydrofuran as a mixed solvent to dissolve methyl-terminated PEO. Tetrahydrofuran weakens the interaction between the ether oxygen atoms on the PEO chain and anisole, promoting the dispersion of PEO in the mixed solvent and facilitating the formation of a homogeneous coating slurry. Meanwhile, methyl-terminated polyethylene oxide not only improves the loss of ionic conductivity after the sulfide solid electrolyte is composited with a non-ionic binder, but its methyl termination also inhibits the degradation effect of polyethylene oxide on the sulfide solid electrolyte, better preserving the high-performance characteristics of the sulfide. Furthermore, the addition of Li3PO4 increases the lithium ion transport rate in polyethylene oxide, thereby improving the ionic conductivity of the composite solid electrolyte membrane.
Owner:GUIZHOU MATERIAL IND TECH INSTITUE

Lightweight powder coating based on furfural-fluorocarbon modified polyester resin and preparation method thereof

The invention discloses a light-weight powder coating based on furfural-fluorocarbon modified polyester resin and a preparation method of the light-weight powder coating. The powder coating takes furfural-fluorocarbon modified polyester resin and organic silicon modified polyester resin as composite film forming base materials, and adopts a composite curing agent of blocked polyisocyanate and beta-hydroxyalkylamide. By means of collaborative optimization of resin molecule design and a curing system, the paint can achieve the adhesive force of 0 grade, the impact resistance of 50 cm, the salt mist resistance of more than 10000 hours and the damp heat resistance and ultraviolet aging resistance of 3000 hours under the condition of an ultrathin coating of about 50 micrometers, and the comprehensive performance is excellent. The product is particularly suitable for long-term protection of extreme corrosion environments such as ocean tidal energy equipment, offshore wind power and cross-sea bridges.
Owner:CHANGZHOU GUANGHUI CHEM

Oral dissolving film agent containing ropinirole hydrochloride and preparation method of oral dissolving film agent

The invention relates to an oral dissolving film agent containing ropinirole hydrochloride and a preparation method of the oral dissolving film agent, and belongs to the technical field of pharmaceutical preparations. The ropinirole hydrochloride oral dissolving film agent comprises ropinirole hydrochloride, a composite film forming material and an ion exchange resin. The ropinirole hydrochloride oral soluble film agent can be quickly dissolved in an oral cavity, is good in taste and high in bioavailability, and overcomes the defects of short drug effect maintaining time, poor taking compliance and the like in the prior art; meanwhile, the invention further discloses a preparation process of the ropinirole hydrochloride oral membrane agent, and the preparation process is simple, easy to control and suitable for industrial production.
Owner:SICHUAN TOURISM UNIV

Preparation method of cation exchange membrane with high alkali resistance

The invention relates to the technical field of exchange membranes, in particular to a preparation method of a high-alkali-resistance cation exchange membrane, which comprises the following steps: (1) pretreating a base material; (2) in-situ cross-linking polymerization; (3) forming a film and curing; (4) alkali liquor activation treatment; according to the technical scheme, in the gradient heating thermal crosslinking process, the crosslinking reaction is slowly and uniformly carried out in a gradual heating manner, so that stress concentration and microcracks in the film caused by direct high temperature are avoided, and the regularity and compactness of a crosslinking network are ensured; the NaOH solution and the alkali liquor at 70 DEG C are used for activating treatment, so that ion exchange sites in the membrane can be activated, the membrane can adapt to a strong alkali environment in advance, and swelling deformation in actual use is reduced. The whole process chain forms an organic whole from pretreatment of the base material to in-situ cross-linking polymerization and then to film-forming curing and alkali liquor activation, and the problems that an existing cation exchange membrane is short in service life and poor in comprehensive performance in a strong alkaline environment are successfully solved.
Owner:HANGZHOU CREATE ENVIRONMENTAL ENERGY TECH CO LTD

Surface protectant for tin-plated copper strip and method of making same

The application discloses a tinned copper strip surface protecting agent and a preparation method thereof. Components of the protecting agent include, in mass parts, 1.1-5.9 parts of a composite film forming agent, 0.01-0.06 parts of a surfactant, 80-95 parts of an organic solvent and 1-18 parts of D series solvent oil. The composite film forming agent is compounded by liquid paraffin, polydimethylsiloxane, tridecafluoro octyl triethoxysilane and heptadecafluorodecyl trimethoxysilane. The application uses n-heptane as a main solvent, adds a small amount of liquid paraffin, polydimethylsiloxane and tridecafluoro octyl triethoxysilane, and under the auxiliary action of a surfactant acetylene glycol polyoxyethylene ether, can form a uniform and dense waterproof and antifouling protective layer on the surface of the tinned copper strip. The tinned copper strip coated by the protecting agent can be stored for a long time without causing surface oxidation, and can still keep smooth even in a storage or transportation environment with relatively high humidity. The formula process is simple, and the service life and reliability of the tinned copper strip are improved.
Owner:深圳市富贵花实业有限公司

Anticorrosive coating containing lanthanum cerium oxide and preparation method thereof

The application relates to the field of anticorrosive coatings, in particular to an anticorrosive coating containing lanthanum cerium oxide and a preparation method thereof. The anticorrosive coating containing lanthanum cerium oxide comprises the following raw materials: 28-45 parts of ultraviolet stable type composite film forming substances, 5-10 parts of composite rare earth fillers, 6-12 parts of supported type synergistic antirust agents, 18-30 parts of mixed solvents, 0.8-2.5 parts of dispersants, 2.7-5.3 parts of functional additives and 0.5-1.2 parts of nano montmorillonite. The composite rare earth fillers are core-shell structure lanthanum cerium oxide-hydroxyapatite composite powders with lanthanum cerium oxide as the core and hydroxyapatite as the shell, and the shell thickness is 10-20 nm. The ultraviolet stable type composite film forming substances comprise epoxy resin and ultraviolet graft modified polyurethane with a weight ratio of 1: (0.6-2.2). The supported type synergistic antirust agent is a mixture of mesoporous silica loaded benzotriazole and zinc molybdate. The obtained coating has strong adhesion and long service life.
Owner:TIANJIN RONGRUI TECHNOLOGY DEVELOPMENT CO LTD

Anti-graffiti finish paint and preparation method thereof

The invention relates to the technical field of coatings, in particular to an anti-doodling finish paint and a preparation method thereof. The coating is prepared from the following components in parts by weight: 25 to 40 parts of fluorine modified acrylic resin, 20 to 35 parts of waterborne polyurethane resin, 0.5 to 5 parts of a modified anti-doodling agent, 3 to 12 parts of a cross-linking agent, 0.1 to 0.8 part of a catalyst, 0.1 to 0.8 part of a de-foaming agent, 0.1 to 0.8 part of a flatting agent, 0.03 to 0.1 part of a dispersing agent, 0.01 to 0.1 part of a film-forming agent, 1 to 8 parts of a curing agent, 0 to 15 parts of filler, 15 to 30 parts of a solvent, 2 to 10 parts of an enhanced silane coupling agent and 0.5 to 5 parts of a repairing agent. Through synergistic compatibility of multiple components and process optimization, the technical limitation of the existing anti-graffiti finish paint is comprehensively broken through, and the coating is endowed with excellent comprehensive use performance; a composite film-forming system is matched with a compound anti-graffiti component, so that the surface energy of the coating can be remarkably reduced, various graffiti pollutants can be conveniently removed, migration and loss of an anti-graffiti additive are effectively inhibited, and long-term stability of the anti-graffiti performance is guaranteed.
Owner:ANHUI BAIZHI NEW MATERIAL CO LTD

A method for improving crystallinity of a flexible covalent organic framework membrane by solvothermal treatment

ActiveCN120888100BEthylic acidBackbone chain
This invention discloses a method for improving the crystallinity of flexible covalent organic framework (COF) membranes through solvothermal treatment, relating to the field of flexible functional membrane materials. The method includes the following steps: (1) synthesizing a COF membrane; (2) immersing the COF membrane in a triethylamine-methanol solution to remove residual acidic components; and (3) placing the treated membrane in an acetic acid-acetonitrile solution and heating it at 100°C for 0.5-6 hours to improve the crystallinity of the membrane. This invention achieves the rearrangement of the backbone chain segments and the enhancement of crystallinity in the membrane through a mild two-step solution treatment process, significantly improving the XRD diffraction intensity, membrane density, and structural order of the COF membrane, while maintaining the flexibility and mechanical properties of the original membrane.
Owner:INNER MONGOLIA UNIVERSITY

Preparation method of nano-salt porous waterproof and breathable membrane

This invention relates to the field of polymer materials technology, specifically to a method for preparing a nano-salt-based porous waterproof and breathable membrane. The method includes: S1, water-soluble inorganic salts are pulverized, surface-modified, and wet-ball-milled, followed by centrifugal precipitation. The particle size distribution index of the nano-salt particles is controlled to be between 0.10 and 0.22 through gradation design, and then gently treated in a mixture of water and low molecular weight alcohol; S2, the nano-salt slurry is added to a polymer film-forming liquid, and dispersed by high-speed shearing and vacuum degassing to obtain a casting liquid, with the viscosity controlled at 5000-20000 cP at 25°C; S3, the casting liquid is coated onto a substrate and pre-dried using a temperature gradient; S4, water-soluble inorganic salts are dissolved in hot water; S5, drying. The core of this invention lies in introducing and defining the pore size conversion coefficient K as the core control target. The K value is controlled through active intervention throughout the entire process of water-soluble inorganic salt preparation, mixing, and film formation, achieving refined and quantitative adjustment of the final membrane pore size and pore size distribution.
Owner:QUANZHOU XIANGXING FABRIC RESEARCH INSTITUTE CO LTD +1

Phosphate modified acrylate water-based anticorrosive paint and preparation method thereof

The invention discloses a phosphate modified acrylate water-based anticorrosive coating and a preparation method thereof. The coating is prepared by the following steps: carrying out emulsion polymerization on 82.5-165 parts of styrene, 10-82.5 parts of butyl acrylate, 5 parts of acrylic acid and 2.5-5 parts of acrylic acid (methacrylic acid) polyoxypropylene polyoxyethylene copolymer phosphate in a water phase to obtain a copolymer emulsion as a film-forming base material; the anti-rust pigment is prepared from one or more of zinc phosphate, sodium molybdate, benzotriazole, sodium nitrite, titanium dioxide and iron oxide red in cooperation with a coalescing agent, a defoaming agent and one or more of zinc phosphate, sodium molybdate, benzotriazole, sodium nitrite, titanium dioxide and iron oxide red. Semi-continuous seed emulsion polymerization is adopted, a phosphate-containing EO / PO block functional monomer is introduced to a polymer main chain, the adhesive force of a coating film to a metal base material and the neutral salt mist corrosion resistance can be remarkably improved, and the environment-friendly anticorrosive coating has the advantages of being good in emulsion storage stability, low in VOC and the like, and is suitable for environment-friendly anticorrosive coating of metal facilities such as steel structures and the like.
Owner:GUANGZHOU HABER NEW MATERIAL TECHNOLOGY CO LTD

Method for producing culture substrate coated with membrane protein

When a culture substrate is coated with a membrane protein, performing a washing operation after the coating with the protein together with a lipid and a surfactant may result in aggregation of the protein, resulting in the inability to perform uniform coating. Therefore, performing more uniform coating on the culture substrate has been an issue. Provided is a method for producing a culture substrate coated with a membrane protein, the method comprising: a step for synthesizing a membrane protein in vitro; a step for forming a lipodisc that contains the synthesized membrane protein, a lipid, and a lipid bilayer membrane stabilizing polymer; and a step for coating the surface of the culture substrate with the lipodisc.
Owner:KANAZAWA UNIV

Preparation method of composite film for blueberry preservation

PendingCN122011519AComposite filmGlycerol
The invention discloses a preparation method of a composite film for blueberry preservation. Natural chitosan is adopted as a base material, active ingredients of phellinus igniarius hypha acid polysaccharide (APFP) and a glycerin plasticizer are matched, no chemical preservative is added, the residual risk caused by traditional chemical preservation is avoided from the source, and the requirements for green consumption and food safety are met; the antibacterial and antioxidant characteristics of APFP and the barrier property of chitosan form a synergistic effect, putrefying bacteria reproduction after blueberry picking can be effectively inhibited, water loss and pulp softening can be slowed down, the method is simple in step and clear in parameter, complex and precise equipment is not needed, the technologies such as magnetic stirring dissolution, standing defoaming and constant-temperature drying are easy to regulate and control in a standardized mode, and the production difficulty and cost can be reduced; the viscosity, the pH value and other indexes of the composite film forming solution are stable, the mechanical strength and the barrier property of the prepared composite film reach the standard, the batch consistency is good, the bottlenecks that an existing bio-based composite film is insufficient in mechanical strength and the technology is difficult to scale are overcome, and both the creativity and the industrialization price are considered.
Owner:CHANGCHUN UNIV

Liver-protecting hangover-alleviating oral soluble film (film candy) and preparation method thereof

The invention provides a liver-protecting alcoholism-relieving oral dissolving film (film candy) and a preparation method thereof, and belongs to the technical field of functional food. The composition comprises 20-50 parts of a radix puerariae extract, 5-15 parts of selenium-enriched ganoderma lucidum powder / ganoderma lucidum extract, 0.1-1 part of a ginger extract, 0.1-1 part of selenium-enriched yeast powder, 40-50 parts of a composite film-forming agent, 3-15 parts of a vegetable oil / fish and shrimp oil penetration enhancer and 0.5-5 parts of a functional auxiliary agent. The preparation method comprises the standardized technological processes of raw material pretreatment, homogenization treatment, step-by-step mixing, vacuum defoaming film-forming paste preparation, coating forming, original three-stage air inlet drying and slitting packaging, and the core innovation point of the preparation method is the original three-stage air inlet drying process, so that the industrial process bottleneck is thoroughly solved. The product disclosed by the invention can be directly taken in the oral cavity without water, can be completely dissolved within 1-5 minutes, the active ingredients are rapidly absorbed through oral mucosa, the gastrointestinal tract first-pass effect is avoided, the product can take effect within 30 minutes, and the product is adaptive to various scene requirements.
Owner:SHANGHAI SUSTAINABILITY RONGSHENG BIOTECHNOLOGY CO LTD

Glass fiber reinforced polyolefin material and preparation method thereof

PendingCN121823982APolyolefinPolypropylene
The invention discloses a glass fiber reinforced polyolefin material and a preparation method thereof, and belongs to the field of high polymer materials. The material is composed of polypropylene, regenerated glass fiber subjected to surface modification by an impregnating compound and an auxiliary agent. The impregnating compound is designed according to the surface characteristics of the glass fiber solid waste and comprises the following components: 3-8 parts of a compound coupling agent, 1-5 parts of a composite film-forming agent, 0.5-2 parts of a lubricant, 0.1-0.5 part of an antistatic agent, 0.01-0.5 part of a pH regulator and 80-95 parts of deionized water. The problem of poor interfacial compatibility of the glass fiber solid waste and the polypropylene matrix is effectively solved, the mechanical property of the prepared composite material is improved by more than two times compared with that of a material using untreated glass fiber solid waste, the performance of the composite material can reach more than 95% of that of a raw glass fiber material, high-value utilization of the solid waste is realized, and the composite material has remarkable environmental protection and economic benefits.
Owner:ORINKO ADVANCED PLASTICS CO LTD

Preparation method and application of lignin chelated zinc rice seed coating agent

PendingCN121970778ABiocidePlant growth regulatorsChelated zincPlasticizer
The invention discloses a preparation method and application of a lignin chelated zinc rice seed coating agent, and the preparation method comprises the following steps: weighing a certain amount of lignin powder, dissolving the powder, adding a zinc salt solution according to a certain proportion, carrying out a chelation reaction, filtering the chelate after the reaction is finished, washing the chelate, standing, filtering, and drying to obtain the lignin chelated zinc; heating and uniformly stirring a lignin chelated zinc sample, a composite film-forming agent and a plasticizer, then adding nano silicon dioxide, mixing to obtain a coating solution, and preserving heat for later use; and weighing a certain amount of rice seeds, immersing the rice seeds into the coating solution, stirring, fishing out, and air-drying to obtain the lignin chelated zinc coated rice seeds. The invention further discloses application of the lignin chelated zinc rice seed coating agent, and the lignin chelated zinc rice seed coating agent can improve the seed germination ability, promote seedling survival and relieve stress resistance. The rice seed coating agent provided by the invention is environment-friendly, can improve the drought tolerance of seeds, can also effectively protect the seeds, and meanwhile, ensures a relatively high germination rate of the seeds.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY

Seed dressing agent and preparation method thereof

The invention discloses a seed dressing agent and a preparation method thereof. Comprising 30-50 parts of a chaetomium globosum QM bacterial agent, 30-50 parts of an enterobacter chinense 314 A1 bacterial agent, 20-40 parts of chitosan, 5-10 parts of a film-forming agent and 3-8 parts of a wetting dispersant. According to the seed dressing agent disclosed by the invention, the chaetomium globosum QM bacterial agent and the enterobacter chinense 314 A1 bacterial agent are added, so that the seedling rate and the growth condition of tomato seedlings are improved, and a synergistic interaction effect is achieved by combined use of the bacterial agent and the enterobacter chinense 314 A1 bacterial agent. By using the polylactic acid-polyethylene glycol copolymer and locust bean gum composite film-forming agent and the nekal and polyethylene glycol monohexadecyl ether composite wetting dispersant, the germination rate of the tomato seeds is increased, and synergistic interaction is achieved.
Owner:XINJIANG HONGTAI SEED IND TECH CO LTD

High-performance composite coating for OSB (oriented strand board) as well as preparation method and application of high-performance composite coating

The invention discloses a high-performance composite coating for an OSB board. Comprising the following raw materials in parts by weight: 35-45 parts of a core-shell fluorocarbon-acrylate composite emulsion, 12-15 parts of a waterborne epoxy acrylate emulsion, 5-8 parts of a waterborne polyurethane dispersion, 10-12 parts of modified expanded graphite, 3-5 parts of aluminum hypophosphite, 2-4 parts of modified potassium titanate whiskers and 1-3 parts of a carbon nanotube dispersion. The water-based paint is prepared from the following components in parts by weight: 6-8 parts of rutile type nano titanium dioxide / montmorillonite composite material, 4-6 parts of water-based coalescing agent, 2-3 parts of environment-friendly coupling agent, 0.5-1.0 part of water-based defoaming agent, 0.3-0.8 part of water-based flatting agent and 8-15 parts of deionized water. The invention further provides a preparation method of the high-performance composite coating for the OSB board. Through the collaborative design of an innovative composite film forming system and a multi-dimensional functional filler, the weather resistance, flame retardance, antibacterial property, adhesive force and mechanical property of the coating are comprehensively improved.
Owner:HUBEI BAOYUAN WOOD CO LTD

A modified graphene material and its preparation method

ActiveCN121851792BOrganic filmPolymer science
This invention relates to the field of graphene materials technology, and discloses a modified graphene material and its preparation method. The preparation method includes: modifying graphene oxide with sodium lignosulfonate through π-π stacking to prepare an aqueous stable dispersion; introducing saponified rosin acid to attach the rosin acid tricyclic hydrophobic framework to the graphene surface; compounding tung oil emulsion, utilizing the α-tung acid conjugated triene double bond to form a film through free radical oxidation polymerization at room temperature (15-35℃), and covalently bonding graphene into the organic film-forming system through phenolic radical coupling; adding zinc borate, where zinc ions catalyze curing and promote the formation of zinc rosin acid, and borate ions form an inorganic borate ester crosslinking network with the hydroxyl groups of sodium lignosulfonate; adjusting the solid content and grinding to obtain the finished product. The conductive ink prepared by this invention self-cures at room temperature, and the cured coating has excellent water resistance and conductivity stability, making it suitable for heat-sensitive flexible substrates.
Owner:HUNAN SANMO NEW MATERIAL CO LTD

Efficient heat exchanger for realizing shell-side medium falling film evaporation

The invention relates to the technical field of heat exchangers, in particular to a shell side medium falling film evaporation efficient heat exchanger which comprises a shell, a front end pipe box body structure and a rear end pipe box body structure are arranged at the two ends of the shell respectively, and a pipe bundle composed of heat exchange pipes is arranged in the shell. The tube bundle located in the shell is provided with a film forming distribution assembly capable of conducting film forming distribution on all the heat exchange tubes at the same time. The film-forming distribution assembly comprises a film-forming distribution sliding table, film-forming hole channels used for being arranged on all the heat exchange pipes in a sliding and sleeving mode are formed in the film-forming distribution sliding table in a penetrating mode, and a liquid distribution cavity of the film-forming distribution sliding table achieves uniform distribution of media in all the film-forming hole channels and is matched with gaps between the film-forming hole channels and the heat exchange pipes to ensure that the media form a liquid film with the uniform thickness. The reciprocating displacement driving structure drives the sliding table to reciprocate along the trend of the heat exchange tube, so that no-missing film distribution of the whole tube body is realized, the problems of no local film and non-uniform liquid film are solved, and the utilization rate of the heat exchange tube and the overall heat exchange efficiency are remarkably improved.
Owner:青岛兰石重型机械设备有限公司

Ammonia synthesis membrane reactor and preparation method thereof

The invention discloses an ammonia synthesis membrane reactor and a preparation method thereof, and belongs to the technical field of ammonia synthesis. The reactor comprises a reactor shell, a composite membrane reactor and an ammonia permeable membrane assembly. The composite membrane reactor is of a tubular structure and is arranged in the shell, and the cross section of the composite membrane reactor sequentially comprises a ceramic membrane layer, a Cs metal layer, a Ru metal layer and a Pd metal layer from inside to outside. The ammonia permeable membrane assembly is arranged in the composite membrane reactor and is an LTA zeolite imidazole framework membrane. Nitrogen is introduced from an inlet at the upper end of the composite membrane reactor, and hydrogen is introduced from an inlet at the upper end of the side wall of the shell. And carrying out catalytic synthesis reaction in the composite membrane reactor, carrying out selective permeation separation on the generated ammonia gas through an ammonia permeation membrane assembly, and discharging from a lower-end product gas outlet. The operation pressure of the reactor is 1-5 MPa, the temperature is 200-400 DEG C, the reaction equilibrium limitation is effectively broken, the conversion per pass is remarkably improved to 50%, efficient ammonia separation (the recovery rate is larger than or equal to 95%, and the purity is larger than or equal to 99.2%) is achieved, and meanwhile energy consumption and equipment cost are reduced.
Owner:FUZHOU UNIV