45results about How to "Good liquid resistance" patented technology

Provided are an electroconductive polymer suspension solution and a method for producing the same, which has excellent adhesion to a substrate and excellent liquid resistance and which can provide an organic material having high electroconductivity. An electroconductive polymer suspension solution of an exemplary embodiment of the invention contains an electroconductive polymer, at least one kind of a water-soluble polyhydric alcohol, and at least one kind of a water-soluble organic substance having two or more functional groups which can be polycondensed with the water-soluble polyhydric alcohol. The electroconductive polymer suspension solution can be produced by collecting an electroconductive polymer which is obtained by chemical oxidative polymerization of a monomer giving the electroconductive polymer by using an oxidant in a solvent containing an organic acid or a salt thereof as a dopant, by contacting the electroconductive polymer with an oxidant in an aqueous solvent containing a polyacid, and further by mixing at least one kind of a water-soluble polyhydric alcohol and at least one kind of a water-soluble organic substance having two or more functional groups which can be polycondensed with the water-soluble polyhydric alcohol.

The invention discloses a dimethyl benzyl alcohol hydrogenolysis catalyst and a preparation method thereof. The catalyst comprises 35-70wt% of copper oxide, 5-25wt% of zinc oxide, 15-40wt% of silicondioxide, 0.5-15wt% of alkaline earth metal oxide and 0.1-5wt% of bismuth oxide and lead oxide. The preparation method comprises the following steps: (a) adding a mixed solution containing a Cu compound, a Zn compound, an alkaline earth metal compound, a Bi compound and a Pb compound and an alkaline precipitant solution into a silica sol aqueous solution for precipitation reaction and heating aging; (b) filtering, washing, drying and roasting the aged slurry to obtain complex compound powder; and (c) adding a binder, a forming assistant and the like into the complex compound powder, fully mixing, extruding and forming, drying and roasting to obtain the catalyst. When used for preparing cumene by hydrogenolysis of dimethylbenzyl alcohol, the method not only has good activity and selectivity,but also has good liquid resistance and high mechanical stability.

The invention provides a preparation method of high-strength ternary fluorine elastomer, which uses emulsion polymerization, uses 50-70mol% 1, 1-difluoroethylene, 10-30mol% fluoropropene and 10-20mol% perfluoroethylene as coplymeric units, uses 0.001-3 weight account of emulsifier in each 100 weight account of water medium, uses 0.1-7wt% persulfate water solution as initiator, to obtain high-strength elastomer via free radical emulsion polymerization, while the strength of the product can reach at least 20MPa and extensibility can reach at least 200%, with better sulfuration property, better liquid resistance, ability for producing die product, and better abrasion resistance.

The invention relates to a conductive air-ventilating and liquid-blocking film. The conductive air-ventilating and liquid-blocking film consists of a hydrophobic macromolecular polymer and conductive material powder, wherein the hydrophobic macromolecular polymer and the conductive material powder are uniformly distributed on nanoscale in the formed conductive air-ventilating and liquid-blocking film; the mass content of the conducive material powder is 50 to 85%; the conductive air-ventilating and liquid-blocking film is prepared by a rolling method. The conductive air-ventilating and liquid-blocking film has the advantages that the conductive property, mechanical property, air ventilating property and waterproof property are excellent, and the strong alkaline and strong acid corrosion is resisted; the weight is light, the service life is long, a preparation technology is simple and convenient, the cost is low, the scale production is easy, and the like; the conductive air-ventilating and liquid-blocking film can be applied to the fields of fuel batteries, electrochemical sensors and the like.

The invention relates to a low-fiber-content high-filler-content sealing pad which is free of asbestos and has the characteristics of liquid resistance, temperature resistance and low burning loss. The low-fiber-content high-filler-content sealing pad is prepared by the following steps: preparing a water suspension slurry from paper pulp, inorganic filler, latex, rubber ingredient and material structure reinforcer, forming by a handsheet former, dewatering, drying, calendering and vulcanizing. The slurry treated by the handsheet former is prepared from the following materials in percentage bymass: 7-20% of paper pulp, 65-85% of inorganic filler, 4-10% of latex and rubber ingredient, and 0.1-5% of material structure reinforcer. The low-fiber-content high-filler-content sealing pad has theadvantages of high universality, simple formula, cheap and accessible raw materials, simple proportioning technique and strong cost price advantage.

The invention discloses an environment-friendly oil-resistant damping shock absorption and flame-retardant gasket material for a motor unit train, which comprises the following components by weight percent: 5-36 percent of fibers, 8-20 percent of rubbers, 15-42 percent of filling agents, 30-70 percent of fire retardant, 0.3-8 percent of coupling agent, 0.8-6 percent of compounding agents and 0.5-2 percent of activating agents. Because asbestos fibers are replaced by aramid pulp fibers, the harm to the human body in the production process and the use process of connection gaskets of equipment such as the motor unit train is eliminated; and gasket materials with good shock absorption and flame-retardant performances, which meet the requirement on installation connection part of the equipment such as the motor unit train are supplied; and meanwhile, the product has good strength, liquid resistance and heat resistance after the product is formed to ensure the flame-retardant shock absorption performance; and therefore, the gasket materials can be used as connection gaskets for installing the motor unit equipment and also can be used as other sealing materials having a requirement on the flame retardance.

The invention relates to an inorganic aqueous surface treatment agent for a single-face electrogalvanized, chromium free surface treated steel plate, a single-face electrogalvanized, chromium-free surface treated steel plate used for fuel tanks and a process of making the same. The inorganic aqueous surface treatment agent for a single-face electrogalvanized, chromium free surface treated steel plate comprises the following components: one or more metallic ion compounds comprising at least one of Zn²⁺, Mn²⁺, Mg²⁺, Ni²⁺, Al³⁺ and Ca²⁺; one or more vanadium compounds comprising at least one of V⁴⁺ and V⁵⁺; one or more compounds comprising at least one of phosphoric acid, pyrophosphoric acid, metaphosphoric acid, organic phosphoric acid and the ammonium salts thereof; one or more fluoric acid compounds comprising at least one of Zr, Ti, Si and Ha; one or more silane coupling agents comprising at least one of vinyl silane coupling agent, amino silane coupling agent, epoxy silane coupling agent and acryloxy silane coupling agent; a silica sol having a particle diameter less than 100 nm; one or more surfactants comprising at least one of carboxylate, sulfuric acid ester salt, sulfonate and phosphoric acid ester salt; wherein the total solid content in the inorganic aqueous surface treatment agent is 2 wt %-20 wt % of the surface treatment agent. The process for preparing the single-face electrogalvanized chromium-free surface treated steel plate used for fuel tanks comprises the steps of coating the plated surface of the single-face electrogalvanized steel plate with the above surface treatment agent, solidifying at a temperature of 70-100° C., and finally oil finishing on the surface to produce a skin film resulting from the surface treatment with a weight of 100-600 mg/m².

The invention discloses a conductive and hydrophobic expanded polytetrafluoroethylene membrane and an application thereof. The conductive and hydrophobic expanded polytetrafluoroethylene membrane comprises a polytetrafluoroethylene PTFE material and a conductive material. A preparation method of the product comprises the following steps: uniformly mixing 50-85 wt% of the polytetrafluoroethylene PTFE material and 15-50 wt% of the conductive material, and carrying out rolling and directional stretching to form the microporous membrane with the micropore diameter of less than 20 [mu]m. The preparation method is beneficial to large-scale production, and meanwhile the product is good in flatness, high in strength, excellent in electrical conductivity and adjustable in air permeability; oxygen and water vapor can penetrate through the conductive, hydrophobic and breathable PTFE membrane, but water drops cannot penetrate through the conductive, hydrophobic and breathable PTFE membrane; and aliquid in the space can be prevented from leaking outwards, and it can be guaranteed that external oxygen enters the space. The product is high in hydrophobicity, and no aqueous solvent is used in thepreparation process, so that a good liquid blocking effect of the membrane is ensured.

The invention relates to a tester used for testing fluid resistance height of a proppant and a testing method thereof. The tester comprises a measuring device, a fluid level sensor and a processer, wherein the measuring device comprises a material containing part used for containing a to-be-measured proppant and a fluid containing part used for containing testing fluid, the fluid containing part is communicated with exterior, and the material containing part is made of dewatering materials; the fluid level sensor is used for being embedded at a position near the upper surface of the to-be-measured proppant; and the processer is used for receiving signals sent by the fluid level sensor and obtaining the height, namely, the fluid resistance height of the testing fluid contained in the fluid containing part when the fluid level sensor senses the testing fluid. According to the tester used for testing the fluid resistance height of the proppant, simulation of formation conditions is not needed, the fluid resistance height of the testing fluid passing through the proppant with scheduled filling thickness can be tested visually under the ordinary pressure condition, and therefore the fluid resistance performance of the proppant can be estimated visually and accurately. Different proppants have different fluid resistance heights under the same testing condition, the higher the values of the fluid resistance heights are, the better the fluid resistance performance is, and the lower the values of the fluid resistance are, the worse the fluid resistance performance is.

The invention relates to a protecting device and method for rail potential. The protecting device comprises a programmable controller and a voltage detecting module, wherein the voltage detecting module which is used for detecting voltage between a steel rail and a protected area is in communication connection with the programmable controller; a connecting piece comprises a first connecting plate, a second connecting plate and a third connecting plate which are connected sequentially; the first connecting plate is opposite to the third connecting plate; a recess-shaped inlaying opening is formed in the second connecting plate; the bottom wall of the inlaying opening faces the direction away from the first connecting plate; and a lock catch plate and a liquid stopping plate which are connected sequentially are arranged on each of the end, which is away from the second connecting plate, of the first connecting plate and the end, which is away from the second connecting plate, of the third connecting plate. By a control cabinet, ventilating and cooling are realized, influence of particulate matter impurities can further be avoided, and the shortcomings that the effects of connection and erection of the connecting piece are lost, troublesomeness of mounting is increased, and maintenance becomes difficult are avoided.

Provided is a protection type precise setting-out position finder. The position finder comprises a horizontal base of which the upper portion is provided with a bearing base, the bearing base is coordinated with a wall through a flange, and the upper portion of the wall is provided with an iron plate; the structure that the upper portion of the wall is provided with the iron plate is achieved by connecting the wall and the iron plate through a connecting piece, a first connecting piece and a third connecting piece are arranged oppositely, a notch-shaped connecting opening is formed in a second connecting piece, and the bottom wall of the connecting opening faces the direction far from the first connecting piece; the upper portion of the outer wall of the bottom of a square box is integrally connected to an iron material protrusion, the iron material protrusion is located outside the top of the iron plate, and the lower portion of the outer wall of the bottom of the square box is attached to a rubber sheet through viscose glue; a notch is formed in the top wall of the top of the iron plate, and the connecting opening is formed in the side wall in the connecting opening. Through the protection type precise setting-out position finder, the defects in the prior art that the effects of connecting and erecting are lost, the complication of mounting is improved, thus the maintenance becomes difficult, and the fixing and connecting method is always not stable enough caused by a connecting piece are reduced.

The invention discloses an aldehyde hydrogenation catalyst and a preparation method thereof. The method comprises the following steps: 1, dissolving a copper precursor, a zinc precursor, an aluminum precursor and a pore-enlarging agent in water to form a mixed solution, and then co-precipitating the mixed solution and a precipitating agent; 2, aging the co-precipitated mixture obtained in the step 1, filtering to obtain a filter cake, drying the filter cake, and uniformly mixing the dried filter cake with an auxiliary agent to obtain powder; 3, mixing the powder with a binder, and carrying out pre-granulation to obtain a pre-granulated catalyst; and 4, roasting the pre-granulated catalyst, then adding graphite, tabletting and molding to obtain the aldehyde hydrogenation catalyst. The catalyst prepared by the method provided by the invention has a large aperture, and can effectively improve the internal diffusion performance of reaction materials; and the catalyst has a low bulk density, and compared with like products, the cost of the catalyst is reduced by about 5%.

The invention belongs to the technical field of papermaking, and particularly discloses photochromic super-hydrophobic functional paper as well as a preparation method and application thereof. The method comprises the following steps: (1) dissolving a tungsten-containing compound, a plasticizer and a macromolecular adhesive in a solvent to obtain a mixed solution A; and uniformly coating on the surface of paper, and drying to obtain pre-coated paper; (2) uniformly mixing heat-resistant nanoparticles, a hydrophobic adhesive and a volatile solvent to obtain a mixed solution B; and uniformly spraying the mixed solution B onto the surface of the pre-coated paper obtained in the step (1), and drying; and (3) repeating the step (2), carrying out secondary spraying, and then carrying out drying treatment to obtain the photochromic super-hydrophobic functional paper. The photochromic super-hydrophobic functional paper disclosed by the invention is simple in preparation process and high in ultraviolet light response rate, and the color can be continuously maintained for more than 6 hours after ultraviolet radiation is stopped; and the functional paper is soft and easy to fold, the contact angle between the surface and water is larger than 150 degrees, and the functional paper has good liquid blocking performance.

A liquid drop ejecting head includes a a nozzle plate to form nozzles, a liquid chamber substrate including one surface bonded to the nozzle plate and forming liquid chambers provided for the nozzles and communicating with the nozzles, a diaphragm bonded to the other surface of the liquid chamber substrate to form a part of each liquid chamber, and a pressure generating unit giving pressure oscillation to the diaphragm in accordance with a liquid drop eject signal to exert pressure on a liquid in each liquid chamber through the diaphragm. In the liquid drop ejecting head, a protection film is formed on an inner side wall of each liquid chamber by a chemical reaction of fluorocarbon and silicon fluoride oxide of a by-product formed on the inner side wall of the liquid chamber with the formation of the liquid chambers in the liquid chamber substrate.

The invention discloses a metal-air battery anode component with a conductive hydrophobic expanded polytetrafluoroethylene (PTFE) membrane. The component comprises a conductive hydrophobic breathablelayer, a metal net layer and a catalytic layer which are sequentially arranged along the direction that oxygen enters a metal-air battery, and the conductive hydrophobic breathable layer is the conductive hydrophobic expanded PTFE membrane. The preparation method comprises the following steps: preparing the catalyst layer, the conductive hydrophobic expanded polytetrafluoroethylene PTFE membrane,the conductive glue and the metal or alloy mesh plate; printing or dispensing uniformly distributed conductive glue on the bonding surface of the conductive hydrophobic expanded polytetrafluoroethylene PTFE film and the metal or alloy mesh plate, and superposing the conductive hydrophobic expanded polytetrafluoroethylene PTFE film and the metal or alloy mesh plate; compressing, curing, and bonding. Through the above method, a good liquid blocking effect of the electrode can be ensured, and an effect that oxygen enters the electrode to react can also be ensured, so that the positive electrode conductivity of the metal-air battery is better. In addition, the service life of the metal-air battery using the component disclosed by the invention is far longer than the service life of other metal-air battery products in the working process.

The invention provides a dimethyl benzyl alcohol hydrogenolysis catalyst and a preparation method and application thereof.The active components of the dimethyl benzyl alcohol hydrogenolysis catalyst comprise Pd, Ru, Cu and Ni, Pd and Ru in the active components are highly dispersed on the surface layer of the catalyst, side reactions such as excessive hydrogenation are inhibited, and the catalytic activity of the catalyst is improved. The dimethyl benzyl alcohol diffused into the pore channel of the catalyst can be subjected to hydrogenolysis reaction under the catalysis of Cu and Ni to generate isopropyl benzene, but is difficult to further hydrogenate to generate a byproduct isopropyl cyclohexane; a carrier of the dimethyl benzyl alcohol hydrogenolysis catalyst is a composite carrier comprising ZnO, SiO2 and Al2O3, so that the efficient hydrogenolysis catalyst with highly dispersed active components, reliable strength and moderate acidity can be obtained; the dimethyl benzyl alcohol hydrogenolysis catalyst has the advantages of being high in active component dispersity, smooth in catalyst pore channel and the like, and has excellent activity and selectivity when being used for preparing isopropyl benzene through dimethyl benzyl alcohol hydrogenolysis.