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67results about How to "Thin film" patented technology

Chemical Resistant Ionomers and Protective Coverings

ActiveUS20110143620A1Low rateImprove moisture vapor transmission rateIon-exchanger regenerationSynthetic resin layered productsPolyesterPolymer science
This invention relates to novel chemical resistant, film forming, and moisture vapor permeable ionomers, including specialized polyurethane ionomers, polyurea ionomers, polyamide ionomers, polyester ionomers, or a mixture of the said ionomers, having high content of covalent-bonded ionic groups, total >100 milli-equivalents per 100 gram of ionomers. These specialized ionomers have low noxious chemical crossover rate, high moisture vapor transmission rate, hydrolytically stable in humid environment, and capable of forming thin films. These novel chemical resistant ionomers can be cationic (selected from tertiary amines and their derivatives or quaternary ammoniums), anionic (selected from aliphatic carboxylic acids and their derivatives or aliphatic sulfonic acids and their derivatives), or zwitterions (selected from ionomers or a mixture of ionomers containing both cations and anions groups), or a mixture of any combination of the above three types, preferably in a form of coating solutions or dispersions suitable for coatings to form thin films or membranes, to protect the coated surface with acceptable barrier properties at any humidity with high moisture vapor permeability. One major application is in the field of protective fabric and protective clothing, gloves, shoes, hats, tents, sleeping bags, and protective skin cream against noxious liquids and gases.
Owner:ZHEJIANG HYPROOF TECH CO LTD

Surface pretreatment agent before metal coating and preparation method and use method thereof

The invention discloses a surface pretreatment agent before metal coating, consisting of components with the following weight ratio: 15-19 portions of film-forming agents; 15-19 portions of coupling agents; 18-23 portions of water-soluble F-containing complex compounds; and 85-90 portions of water. A method for preparing the surface pretreatment agent before metal coating is as follows: firstly wetting the film-forming agents sufficiently with water; and then adding the coupling agents, the F-containing complex compounds or the salts thereof, and the balance of water to be evenly mixed; the method for using the surface pretreatment agent before metal coating comprises the following steps of: firstly using water to dilute the surface pretreatment agent before metal coating until the pH value thereof is 4.5-6; spraying or infiltrating the surface of the treated metal with the treatment time of 30s-90s; and by adopting the technical scheme, the film can be tightly combined with the coating on the metal surface, forms a middle layer with very strong combination force between the metal and the coating, has very good combination force both with the metal surface and the coating, and cancompletely replace the phosphating agent.
Owner:安徽天航机电有限公司

A kind of preparation method of acetic acid dehydration ZSM-5 zeolite membrane

ActiveCN102285668AThin filmContinuous and uniform film layerPentasil aluminosilicate zeoliteOrganic acidChemistry
The invention discloses a method for synthesizing zeolite socony mobil-5 (ZSM-5) zeolite membrane by dehydration by acetic acid, which comprises: directly introducing an ultrathin crystal seed layer onto a macroporous carrier by a two-step crystal process, regulating the Si to Al ratio of a crystallization mother solution by using F<-> as an inorganic structural guiding agent, and preparing a 5 to 6 micrometer thick ZSM-5 zeolite membrane, particularly a ZSM-5 zeolite membrane in which the Si to Al ratio is 10, by using a secondary growth process; therefore, the limit that the membrane can only be formed under a condition that the Si to Al ratio of the crystallization mother solution is more than 20 if an organic template agent is not used is break through, the hydrophilic property of themembrane is improved greatly, and the generation of microstructures which are not acid resistant with aluminum enriched surface and inter-crystal gap is avoided effectively. The membrane thus has high acetic acid dehydration and separation selectively and high acid resistance, the low-flux, low-selectivity and low-acid-resistance technical bottlenecks that zeolite membrane organic acid dehydration faces are broken through, and a firm foundation is laid for the industrial use of the zeolite membrane.
Owner:DALIAN UNIV OF TECH

Corrosion-resistant neutral chrome-free coating agent and preparation method thereof

The invention belongs to the technical field of chemicals, and relates to a metal surface treatment technology, in particular to a corrosion-resistant neutral chrome-free coating agent and a preparation method thereof. The corrosion-resistant neutral chrome-free coating agent comprises the following components of, by weight, 2-10 parts of water soluble resin, 2-10 parts of micromolecule solvents,10-30 parts of nano oxide sol, 0-5 parts of film-forming auxiliary agents, 1-10 silane coupling agents, 0-5 parts of pH conditioning agents and 50-70 parts of water. The corrosion-resistant neutral chrome-free coating agent is convenient to apply, and is directly in contact with aluminum, magnesium and an aluminum-magnesium alloy plate at ordinary temperature, so that the magnesium-aluminum alloyplate which is high in corrosion resistance, acid resistance and alkali resistance and reaches the hardness requirement can be produced. Aluminum and magnesium alloys using the corrosion-resistant neutral chrome-free coating agent have no color change in the surfaces, and a self-colored passive film can be obtained; and a film layer is thin, and the corrosion-resistant neutral chrome-free coatingagent has little impedance to a metal base and has no corrosion and the subsequent serviceability of the metal base is not affected.
Owner:广东锴力环保新材料有限公司

Resin wave absorption paint and preparation method thereof

The invention provides resin wave absorption paint, which is prepared from resin, graphene and ferroferric oxide compounded material, dispersing agents, anti-settling agents and solvents. The paint is characterized in that the addition mode of graphene materials in the resin wave absorption paint is creatively changed; firstly, the graphene is compounded with a hard material of ferroferric oxide in the paint to obtain the graphene and ferroferric oxide compounded material; then, the graphene and ferroferric oxide compounding material is combined with the other ingredients to obtain the resin wave absorption paint. The graphene dispersing problem can be better solved; the complete realization of the excellent performance is ensured; the problem of mixing nonuniformity of flexible graphene materials in a paint system is solved; in addition, the uniform dispersion of ferroferric oxide nanometer particles on the surface of the graphene can be realized; the performance is better achieved; more importantly, the specific ingredients are matched to be used, so that the prepared resin wave absorption paint has the advantages of thin film layer, high intensity, strong wave absorption capability, wide wave absorption frequency band and low cost; wide application prospects are realized.
Owner:SHANDONG OBO NEW MATERIAL CO LTD

Preparation method of environment-friendly metal antiseptic silane modified waterborne polyurethane resin and antiseptic treatment method

The invention relates to a preparation method of environment-friendly metal antiseptic silane modified waterborne polyurethane resin and an antiseptic treatment method, and belongs to the technical field of metal surface antiseptic treatment. The preparation method comprises the steps that polyhydric alcohols, polyisocyanates and a hydrophilic chain-extending agent react for 2 h and then added with a cross-linking agent, a reaction continues to be carried out for 3 h at 80 DEG C, the mixture is added with triethylamine for neutralizing after being cooled to 60 DEG C, and a waterborne polyurethane prepolymer is obtained; then the waterborne polyurethane prepolymer is cooled by ice water to room temperature and added with water under strong stirring for high-speed dispersion, a silane coupling agent is added to terminate the prepolymer, high-speed dispersion is carried out for 30 min, standing and defoaming are carried out, and therefore the metal antiseptic silane modified waterborne polyurethane resin is obtained. The invention further discloses the antiseptic treatment method for metal. The antiseptic treatment method comprises the steps that the obtained antiseptic resin is placed in a container, evenly attached to the surface of the purified metal and then driven at room temperature. By using the antiseptic resin for treating the surface of metal, the antiseptic performance is remarkably improved, the technology is simple, a coating film is thin, and the cost is low.
Owner:广东德丽雅新材料有限公司 +1

Grease deacidification equipment and deacidification method

The invention discloses grease deacidification equipment and a deacidification method. The grease deacidification equipment sequentially comprises a first barrel body, a second barrel body, a third barrel body and a fourth barrel body from top to bottom. The deacidification method carried out by using the equipment takes de-colored grease as a raw material; a temperature range of a deacidification tower of the raw material is 170-260 DEG C; the flow of steam is 3-11kg / h and the vacuum degree is 133.3-266.6Pa. Grease is collected by a liquid collection device and the contact area between the grease and the direct steam is further enlarged; the removing efficiency of free fatty acid is sufficiently improved and an oil path is effectively prevented from being shortened out; the spraying effect is controlled by adjusting a spraying device and the de-colored grease enters a nozzle and is sprayed into the deacidification tower in a micro-droplet shape, so that the distribution of the de-colored oil at a filler section is uniform and a formed film is thin; substances with high steam pressure including ketones, aldehydes and the like, and the fatty acids, hydrocarbons and the like with high boiling points can be effectively removed; the steam use amount is less when the deacidification equipment is used and is only about 25% of the steam use amount of a common plate type deodorization tower.
Owner:陈汉卿

Non-aqueous lithium-ion battery electrolyte and lithium ion battery

The invention discloses a non-aqueous lithium-ion battery electrolyte and a lithium ion battery. The non-aqueous lithium-ion battery electrolyte contains electrolyte salt, a non-aqueous organic solvent and a functional additive, wherein the functional additive is selected from one or combination of multiple compounds with chemical formulae of (K)(m+4)P(m+2)O(3m+7), (L)(n/2+2)P(n+2)O(3n+7) and (K)s(PO3)s, K is an alkali metal element selected from a first main group except hydrogen; L is an alkali metal element selected from a second main group except beryllium in the periodic table of elements; (K)(m+4)P(m+2)O(3m+7) contains an anionic group P(m+2)O(3m+7)<(m+4)->, and m is 0 or a positive integer; (L)(n/2+2)P(n+2)O(3n+7) contains an anionic group P(n+2)O(3n+7)<(n+4)->, and n is 0 or a positive even number; (K)s(PO3)s contains an anionic group (PO3)s<s->, and s is 3 or an integer larger than 3. During first formation of a battery prepared from the non-aqueous lithium-ion battery electrolyte, a dense and uniform SEI film with high lithium ion conductivity can be formed, so that first charge-discharge efficiency of the battery is improved, and normal-temperature cycling performance, rate capability, high-temperature cycling performance, high-temperature storage performance and low-temperature discharge performance of the battery are improved.
Owner:ZHUHAI SMOOTHWAY ELECTRONICS MATERIALS

Micro-scale charge detonation pressure and detonation velocity test system based on MEMS pressure-conducted probe

The invention relates to a micro-scale charge detonation pressure and detonation velocity test system based on a MEMS pressure-conducted probe. The system comprises an initiation device, wherein the lower end of the initiation device and the upper end of a micro-scale charge body are connected and fixed, the lower end of the micro-scale charge body is fixed to the upper end of an inert medium, andthe lower end of the inert medium is fixedly connected with a bottom plate; the edge of the micro-scale charge body and the inert medium is embedded with the MEMS pressure-conducted probe, and leadsof the MEMS pressure-conducted probes are led out from the interfaces of the inert medium and the bottom plate; the leads, a resistor and a constant voltage source of the MEMS pressure-conducted probeform a current loop; the leads of the MEMS pressure-conducted probe are connected with the input end of an oscilloscope; and the initiation device is connected with an initiator, the initiator is connected with the input end of the oscilloscope through a current ring, and the output end of the oscilloscope is connected with a computer. The MEMS pressure-conducted probe can obtain the explosive detonation velocity and the initial velocity of the medium shockwave at the same time, so that a detonation velocity growth curve and the end face output detonation pressure of the micro-scale charge are calculated and obtained. The system is suitable for measuring the output performance of micro-scale charge, and improves the measuring precision.
Owner:XI AN JIAOTONG UNIV

Organic electrochemical transistor sensor based on molecularly imprinted membrane

The invention discloses an organic electrochemical transistor sensor based on a molecular imprinted membrane, characterized in that a gate electrode of the organic electrochemical transistor sensor adopts a gold electrode modified with the molecular imprinted membrane, and the gate electrode is obtained by that an object to be detected is used as a template molecule, the template molecule is polymerized with a corresponding functional monomer by cyclic voltammetry to form a polymer membrane on the surface of the gold electrode firstly, and then the template molecule in the polymer template is eluted; and the gate electrode regulates and controls the channel current between a source electrode and a drain electrode through the solution of the object to be tested to constitute the organic electrochemical transistor sensor for selectively recognizing the object to be detected. The invention combines the molecular imprinting technique with the organic electrochemical transistor device, uses the specificity selection of the molecular imprinting technique and the signal amplification function of the organic electrochemical transistor sensor to recognize the specificity of the object to be detected, can selectively absorb the micro and even trace object to be detected, and has good selectivity, high sensitivity and low detection limit.
Owner:HEFEI UNIV OF TECH
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