526results about How to "Impenetrable" patented technology

The present invention relates to a preparation technique and an application of unsaturated fatty acid microcapsules. The preparation technique of the unsaturated fatty acid microcapsules is characterized in that the present invention includes the following steps: 1) the selection of the raw materials: the inner layer coating materials and the outer layer wall materials are selected for standby according to that the weight ratio of the inner layer coating materials and the outer layer wall materials is 0.7 to 1.5: 3 to 5; the inner layer coating materials are unsaturated fatty acid; the outer layer wall materials are the mixture of any two or more of the natural rubbers, carbohydrates and soluble proteins; 2) the outer layer wall materials are mixed evenly, the weight ratio of the outer layer wall materials and the water is 3 to 4: 6 to 7, the evenly mixed outer layer wall materials are added after the water temperature is increased to 50 DEG C, so as to get the pre-emulsion; 3) the inner layer coating materials are added into the pre-emulsion and is homogenized at the high pressure of 30 to 35MPa, so as to get the emulsion; 4) the emulsion is treated by the spray drying, the materials after the spray drying is cooled by a fluidized bed, the cooling temperature is 30 to 50 DEG C, then the materials pass through a 20 to 60 mesh vibrating screen, so as to get the unsaturated fatty acid microcapsules. The present invention is characterized by water repellency.

The invention provides a high-efficiency extinguish material for a major fire source, which comprises the following components by weight portion: 1 to 50 portions of component A, 1 to 2 portions of component B, 2 to 1,000 portions of component C, and 0 to 200 portions of component D. The component A is an inorganic silicate material; the component B comprises a foaming agent, a surfactant and a dispersing agent; the component C is water; and the component D comprises a defoamer, a fireproof material, a material generating flame-retardant gas through pyrolysis, a water absorber, a colloidal material and a filling material. The high-efficiency extinguish material overcomes the defects that the prior art has high production and using cost, fast running-off, low service efficiency, severer pollution and high residual quantity, has the advantages of low cost, controllable specific gravity, higher viscosity, difficult seepage, loose storage conditions, fast production, convenient use, safe performance and the like, and can achieve large batches of long-distance transportation. The high-efficiency extinguish material is applicable for large-scale fire extinguishing of oil products, flammable chemicals, large buildings, coal mines, forests and the like, other fire source control and the like.

The invention relates to a silicon-containing distillate oil hydrofining method, which adopts the method that the silicon-containing distillate oil raw material and hydrogen pass through at least two hydrofining catalyst beds under the hydrofining condition, the silicon-containing distillate oil raw material first passes through a hydrogenising catalyst bed with the silicon catching function, and then passes through a conventional hydrofining catalyst bed; wherein the hydrogenising catalyst with the silicon catching function has a greater pore volume and a specific surface area and a relatively lower metal content. Compared with the prior art, the method has the advantages that the process is simple, the good hydrodesulfurization and hydrodedenitrification performance is kept on the premise of enhancing the silicon-containing ability, and the running period of the device is effectively prolonged. The method can be applied to various silicon-containing distillate oil hydrofining processes.

The invention discloses a thermoplastic halogen-free flame retarding elastomer composition for electric wire and cable covering materials. The composition is prepared from the components in parts by weight: 100 parts of polyphenylene ether resin, 50-200 parts of styrene elastomer, 20-100 parts of polyolefin resin, 80-150 parts of halogen-free flame retardant, 0-30 parts of flame retardant synergist, 0-50 parts of compatilizer and 0.5-50 parts of other additive. The thermoplastic halogen-free flame retarding elastomer composition for electric wire and cable covering materials can satisfy the UL use standard of electric wires and cables, the produced products are healthy and environment-friendly, can effectively prevent the infiltration and the precipitation of ingredients of the flame retardant, and also have the advantages of low cost, favorable processing property, and the like.

The invention discloses a hanging tool for wafer electroplating. The hanging tool comprises an upper cover, a lower plate and a metal conductive ring, wherein an inner thread is arranged on the inner wall of the upper cover, a wafer groove is formed in the lower plate, an electroplating hole is formed in the middle of the wafer groove, and an outer thread engaged with the inner thread is arranged on the outer wall of the wafer groove; a platform is arranged between the inner wall of the wafer groove and the electroplating hole; the metal conductive ring is arranged on the platform. The upper cover of the hanging tool for the wafer electroplating is locked in a rotary mode, and the need of manually disassembling screws is eliminated, so that the hanging tool is convenient to operate, uniform in force, good in electrical conductivity and sealing performance and uniform in water coating, thereby greatly saving the manpower and reducing the wafer scrapping risk.

The invention relates to a moisture-proof cable. The moisture-proof cable comprises a conductive wire core which is externally wrapped by an insulating protection layer. The insulating protection layer is externally wrapped by a blocking layer which is made of elastic material. The blocking layer is externally wrapped by a moisture-proof tube which is externally wrapped by an external protection layer with a water-resistant function. The moisture-proof tube is made of porous water swelling material. Negative pressure tubes are equidistantly arranged along the axial direction of the moisture-proof tube in the tube wall of the moisture-proof tube. Capillary holes are arranged on the tube wall of the negative pressure tubes. Air extraction valves are also adjacently connected on the negative pressure tubes. The air extraction valves stretch out of the external protection layer. The moisture-proof cable is relatively low in mass, exquisite in structure, great in the moisture-proof effect and convenient for later maintenance.

The invention discloses a dust removal and waste gas decomposition double-effect filter material and a preparation method thereof. The filter material comprises a raw felt, catalyst powder and a coating. The filter material utilizes the raw felt as a carrier, the catalyst powder is adhered to the inside of the raw felt, and the coating is coated on the surface of the raw felt and is of a polytrifluorochloroethylene microporous film structure. The catalyst powder is in a grade of nanometer or micron and is selected from one or more of vanadium pentoxide, vanadium trioxide, tungsten trioxide, titanium dioxide and manganese dioxide. By utilizing the preparation method to prepare the filter material, the process is simple and easy to implement, and processing costs of preparation of catalyticfibers, film covering and the like are reduced. In addition, compared with a polytetrafluoroethylene microporous film, running resistance is low, and difficulties in follow-up sewing, transportation,installation and the like of the filter material are reduced simultaneously.

The invention relates to a preparation method for preparing a supported selective hydrogenation catalyst by using microemulsion technology. A microemulsion system containing a surfactant, a cosurfactant, oil phase and a soluble metal salt solution is prepared in constant-temperature water bath to solve problems how to enhance hydrogenation activity and selectivity of the catalyst. Each component of the microemulsion system is prepared at a certain ratio and the system is a microemulsion system with high stable interfacial film strength, without obvious osmosis phenomenon. A nickel nano-catalyst prepared by the microemulsification technology is mainly used for selective catalytic hydrogenation reactions. The invention has the advantages that the prepared catalyst has an active component particle of which the diameter is less than 10nm; the catalyst has good dispersibility and high hydrogenation activity; the reaction temperature is low; and the preparation method is simple and easy to operate.

The present invention discloses a recovery method of the tail gas produced by the trichlorosilane, which is characterized in that after the synthetic gas of the fluidized bed reactor is condensed, the noncondensing gas(tail gas) is sent to a compressor to be compressed, and then came into a hydrogen membrane separator to separate the hydrogen, the impervious gas in the hydrogen membrane separator is sent to a recycle condenser, via the further condensation by the recycle condenser, obtaining the trichlorosilane and the silicon tetrachloride, the incondensable gas is the chlorine hydride, reused in the fluidized bed reactor as the raw material again, the trichlorosilane and the silicon tetrachloride are the recycling productions. The separated hydrogen is capable of being used for fuel or raw material used for producing other productions, and is also capable of directly injecting into the atmosphere.

The invention discloses a die pressing costing capable of being transferred onto a composite metal surface. The die pressing costing comprises 6-10% of cellulose acetate butyrate, 4-8% of acrylic resin, 2-6% of nitrocotton liquid, 25-35% of butanone, 10-20% of propylene glycol monomethyl ether and 28-32% of ethyl acetate, and is 1.3-1.5 micrometers in thickness. The die pressing coating is compact in surface, not easy to erode by solvent utilized in follow-up processing, suitable in strength for die pressing, good in stripping, and particularly suitable for being transferred onto an aluminum foil surface of composite aluminum foil paper to be colored and embossed after the die pressing, so that the composite aluminum foil paper with laser effect can be obtained. The invention further provides a laser film comprising the die pressing coating. The laser film comprises a basic film, and the die pressing coating which is provided with laser patterns after die pressing treatment is coated on the basic film, and a vacuum aluminum coated layer is arranged on the die pressing coating. The composite aluminum foil paper with bright, smooth and massive laser effect can be obtained by compositing the laser film with the composite aluminum foil paper and peeling the same off, and the process is easy to control.

The invention relates to a high-sinking-resistance transparent primer and a preparation method thereof. The high-sinking-resistance transparent primer is particularly suitable for application on a wood substrate and especially suitable for application on a substrate with deeper wood-grain guide tubes. The primer is prepared from a main paint, a curing agent and a diluter in a mass ratio of 1:0.5:(0.3-1):0.5:0.7. The main paint is prepared from the following raw materials in parts by mass: 55-70 parts of small-oil-length alkyd resin, 5-15 parts of castor oil modified alkyd resin, 3-10 parts of zinc stearate, 0-30 parts of talcum powder, 0.5-1 part of anti-settling agent, 0.3-1 part of defoamer, 0.2-0.5 part of leveling agent, 0.1-0.5 part of wetting and dispersing agent, 0.1-0.3 part of drier and 5-15 parts of environment-friendly mixed solvent. The primer can be well combined with the substrate after being applied, and has excellent properties in the aspect of wood grain / guide tube filling. After the primer is placed for a long time, the paint film of the finish paint can not shrink, and can not generate the phenomenon of sinking.

The invention relates to a lead-acid battery DE partition and the preparation method, belongs to the accumulator cell technology area, used for sovling the existing flaw of the existing each partition. Its technical plan is that, it is composed by the following weight unit's matter: the glass fiber 20-60, the diatomaceous earth 40-80, the polyester fiber 5-20, wet forming rubber latex 3-10, PPE 0.1-1, maintenance agents 0.2-2; the above raw material after ingredient, pulp purification and transportation, base working, partition processing and so on working procedure produce the product. This invention partition has the merit of litter resistance, thermostable, the corrosion resistance, overcame the flaw of rubber partition easy to break, the rare raw material, also overcome the flaw of PE, the rubber partition poor performance of anticorrosive and heat resistance and the poor absorptivity.

The invention discloses a liquid composition used for reinforcing concrete, a preparation method thereof and application thereof. The pH value of a mixture of the composition and water is more than 1 and less than or equal to 7. The liquid composition comprises siloxane polymer which is selected from compounds of which the structural general formula is [RnSiO (4-n) / 2]m or a combination thereof, wherein R is selected from chlorine atoms, fluorine atoms, methoxyl, ethoxyl, propoxyl, butoxyl, methyl, ethyl, propyl and butyl; n is a natural number from 1 to 3, and m is an integer not less than 2; and the SiO2 solid accounts for 30 to 70 percent by weight when the polymer is fully hydrolyzed, and the rest is the mixture of organic alcohol solvent or halogen ions and free acid, wherein the halogen ions may be one or combination of chlorine ions and fluorine ions. The mixture can permeate into a concrete surface structure of the concrete to react with the components in the concrete, so the concrete surface structure is quickly reinforced and hardened, the concrete is prevented from dusting and sanding, meanwhile the acid resistance, oil resistance and water resistance of the concrete are improved, and the SiCl4 pollution of the polysilicon industry can be eliminated.

The invention relates to a method for preparing a novel conductive polypyrrole / polyaniline composite anticorrosive coating. The method comprises the following steps of: dissolving p-toluenesulfonic acid into water, regulating the pH value of a solution to be an appropriate value, and adding pyrrole and aniline monomers to obtain a mixed solution; performing electrochemical synthesis by using a three-electrode system, wherein copper is taken as a working electrode, a platinum sheet is taken as an auxiliary electrode, and a reference electrode is a saturated calomel electrode; and performing electrochemical polymerization under certain electrical parameters by cyclic voltammetry to obtain a layer of conductive polypyrrole / polyaniline composite anticorrosive coating on the surface of the copper electrode. The conductive polymer coating generated on the surface of the copper has high adhesion and is uniform and compact; medium corrosion ions can be effectively hindered from penetrating the coating and permeating into the surface of a metal matrix for a long time; the composite coating effectively improves the corrosion potential of a copper matrix and reduces corrosion current; and in addition, after the prepared coating is damaged, a layer of passivating film can be quickly generated on the surface of the matrix so as to ensure that metal is free of corrosion.

The invention discloses a fluff anti-seepage type concrete slab for a building external wall, and belongs to the technical field of buildings. According to the fluff anti-seepage type concrete slab for the building external wall, fluff-like water guide air bag bars similar to fluff can be disposed on the outer surface of a concrete slab, waterproofing is realized for the surface at a normal state,the contact between rainwater and the concrete slab is reduced, and therefore a certain anti-seepage effect is realized, even when a slight water seepage phenomenon occurs, self-releasing water storage balls buried corresponding to the fluff-like water guide air bag bars rapidly absorb water and trigger drainage actions to inject air into the fluff-like water guide air bag bars on the basis of internal extrusion and to make the fluff-like water guide air bag bars get hard and straight, meanwhile the self-releasing water storage balls release the absorbed water, the water is rapidly guided outof the concrete slab with the aid of the fluff-like water guide air bag bars, and the contact area between the water and the outside is increased at the same time, so that water evaporation is accelerated, the rapid drying of the surface of the concrete slab can be promoted, the rainwater can hardly continue to seep into the concrete slab, and the anti-seepage performance of the concrete slab isgreatly improved.

The invention belongs to a wine container and a preparation method thereof, and particularly relates to a leak-proof and anti-volatile bamboo tube container for bamboo wine and a manufacturing method of the container. A bamboo tube is made of natural bamboo, a heated wood oil layer is coated on the outer layer of the cleaned bamboo tube, a bee wax layer is coated on the outer layer of the dried bamboo tube, the bamboo tube is primarily processed, cleaned, grinded and coated with wood oil and bee wax to form the bamboo tube container, and the bamboo tube container can be used for containing the wine and can be sealed. The manufacturing method of the leak-proof and anti-volatile bamboo tube container for the bamboo wine is characterized in that the wood oil is heated to reach a certain temperature and then coated on the surface of the bamboo tube, liquid does not easily permeates after a film is formed, corrosion and leakage can be prevented, the bee wax is heated to reach a certain temperature, then coated on the surface of the bamboo tube and polished, leakage can be stopped, the problems of peeling, separation and leakage of glue coating are solved, the wood oil and the bee wax are quite stable in chemical property, and the bamboo wine is green and environmentally friendly and has original taste and flavor and unique fragrance of the natural bamboo.

The invention discloses a double-side hot-melt adhesive film and process for preparation, wherein the two surfaces of the paper layer are coated by hot melt glue layers. The preparing process comprises heating the hot melt glue to 120-160 deg. C, coating the glue to the two sides of paper, finally press forming.

The invention discloses an electroporation method for transfection of mammal embryo with siRNA (small interfering Ribose Nucleic Acid). The electroporation method comprises the following steps: (1) weakening an embryo zona pellucid; (2) preparing electroporation solution containing siRNA; and (3) conveying the embryo into the prepared electroporation solution containing siRNA, standing at the room temperature, and then conveying the embryo and the electroporation solution into an electric turn trough for electroporation. The electroporation method comprises the steps of weakening the embryo zona pellucid and complexing the siRNA, and then placing the embryo under the action of a pulsed electric field to increase the permeability and the membrane conductance of the embryo instantaneously, and thus the siRNA which is difficult to penetrate through a cell membrane under the normal physiological condition enters the cell. Statistic observation and analysis prove that the stable positive transfection efficiency of survival embryos exceeds 95%, and the practical effective utilization rate of the collected total embryo exceeds 70%. The electroporation method is a safe, simple and efficient transfection technology of mammal embryo with siRNA.

The invention provides an electronic louver film based on PDLC liquid crystal light adjusting film. The electronic louver film comprises PET1 and PET2, a PDLC layer is arranged between PET1 and PET2,ITO layers are arranged between the PDLC layer and PET1 and between the PDLC layer and PET2 respectively and are provided with etching lines, and electrodes are arranged on the ITO layers at the etching line sides. The invention provides the electronic louver film based on the PDLC liquid crystal light adjusting film and a control system of the PDLC liquid crystal light adjusting film. The louverfilm achieves transparency at any range and the functions of adjusting the dull-polish area and displaying a pattern, so that the applicability of the louver film is wider, and the safety performanceis higher.

The invention discloses a manufacturing method for a hard micro-fluid chip. The manufacturing method comprises the following steps: preparing an upper chip and chemically bonding and packaging the upper chip under a semi-cured state with a substrate, thereby acquiring the hard micro-fluid chip. The upper chip can be prepared from epoxy resin or amino resin; when the upper chip is prepared, the heating curing temperature is 45-85 DEG C and the time is 15 minutes to 8 hours; a thermal polymerized epoxy resin material is used after the two materials of prepolymer and curing agent are mixed, the viscosity thereof after mixing is low (approximate to mineral oil viscosity), the rolling printing for a tiny structure at micron scale and even nanometer scale is convenient and the rolling precision is high; the mixture can be solidified within 40min under the temperature of 80 DEG C, the preparation time of the micro-fluid chip is shortened, the period is short, the consumption of a reagent is less and the batch production is convenient; the hard micro-fluid chip can be flexibly packaged and combined with various substrates; the packaging is independent of external high temperature and high pressure environments; and the packaging strength is high and the speed is high.

The invention provides a reinforced root resistant waterproof roll. The reinforced root resistant waterproof roll, in parts by weight, consists of 2-5 parts of a fire retardant, 15-20 parts of mobility resistant plasticizer, 60-75 parts of polyvinyl chloride resin, 2-8 parts of epoxidized soybean oil, 1-5 parts of dibasic lead phosphite, 1-5 parts of tribasic lead phosphite, 2-8 parts of E-881 modified vinyl chloride-vinyl acetate copolymer resin and 1-5 parts of epoxy resin. The reinforced root resistant waterproof roll is relatively strong in impact resistance and corrosion resistance, and can meet requirements of an existing building vegetation system. The reinforced root resistant waterproof roll, in a process of using, is root resistant and good in waterproof effect; the reinforced root resistant waterproof roll, no matter in production and construction processes or use process, has the advantages of being free from pollution to environment, uniform in texture and long in service life.

The present invention relates to silicone rubber sealing glue used in medium and high voltage cable accessories and its preparation method and cable accessories. The sealing glue contains a) a first siloxane polymer containing a repeating unit represented by Formula (I): RaSiO(4-a) / 2, wherein group R is a substituted or unsubstituted group containing 1 to 20 carbon atoms, a is 0, 1, 2 or 3, wherein number-average molecular weight of the first siloxane polymer is from 150000 to 900000 g / mol; b) a second siloxane polymer containing a unit represented by Formula (I), wherein kinematic viscosity of the second siloxane polymer is from 5000 cst to 100Mcst; and c) filler; wherein the filler accounts for more than 10% of the sealing glue in weight. Compared with prior arts, the second siloxane polymer molecule used in the sealing glue of the present invention is relatively big and the second siloxane polymer is difficult to penetrate into rubber body. Therefore, performance of the rubber body is not easily affected by the sealing glue, which can prolong life of the rubber body and stabilize quality of protection for cable headend.

The invention relates to a water treatment method, particularly a water treatment method for ultrasonically improving oxidation of pollutants with permanganates, and aims to solve the problems in the prior art the speed of oxidation with permanganates is slow, the treatment effect is not stable, the dispersion of produced manganese dioxide nanoparticles is poor and the catalytic rate is low. The method has three forms. The first form comprises the following steps of: pre-treating water; feeding the effluent into a mixing pond, a flocculation pond and a precipitation pond in sequence; filtering the effluent; feeding to a clear water pond and sterilizing. The second form comprises the following steps of: feeding the water into a mixing pond and then pre-treating the water, feeding the effluent to a flocculation pond and then a precipitation pond, filtering the effluent, feeding to a clear water pond and sterilizing. The third form comprises the following steps of: feeding the water into a mixing pond; adding permanganates, inducers and coagulants under ultrasonic action; feeding the effluent to a flocculation pond and then a precipitation pond; filtering the effluent; feeding to a clear water pond and sterilizing. The method has stable operating effects, is favorable for the dispersion of manganese dioxide nanoparticles which are used as the reduction product of permanganates, improves the catalytic ability of manganese dioxide in oxidation of permanganates, and promotes the decomposition of permanganates to produce highly-active intermediate-state manganese.

The invention discloses a device for purifying molten steel in tundishes. The device comprises a base, a cyclone portion and a flow guide portion. The cyclone portion and the flow guide portion are fixed to the upper side of the base; the cyclone portion and the flow guide portion are integrally formed, the cyclone portion is provided with an opening hollow inner cavity which is a cyclone cavity; the cyclone cavity is provided with side walls, two symmetric through flow guide ports are formed in the bottom of the cyclone cavity, two symmetric through tangential nozzles are arranged at the bottom of the cyclone cavity, and a slide jump plate is arranged on the lower portion of the cyclone cavity; the flow guide portion is provided with an opening hollow inner cavity which is a flow guide cavity; the flow guide cavity with a thick upper portion and a narrow lower portion is provided with side walls and tangential side walls and is communicated with the cyclone cavity via the tangential nozzles. The device has the advantages that steel slag which flows into the tundishes can quickly float up under the effect of the device, accordingly, slag entrapment can be prevented, large nonmetallic inclusion can be removed, effects of purifying the molten steel in the tundishes can be improved, and the problem of deficiency of devices for efficiently removing inclusion in molten steel and purifying the molten steel in tundishes at present can be solved.

The invention discloses a refractory castable for a tundish cover. The refractory castable is prepared from the following components in parts by weight: 50-80 parts of magnesia, 5-20 parts of dolomite, 5-10 parts of zircon, 1-20 parts of carbon, 2-5 parts of water-free binder and 0.2-1 part of urotropine. The magnesia, the dolomite and the zircon are mixed to prepare particles and fine powder, wherein the part number of the particles is 35-55, the part number of the fine powder is 45-65, the particle size of the particles ranges from 3.0 to 2.0mm, the particle size of the fine powder is 2.0-0.5mm. The refractory castable has excellent thermal shock resistance and breakage and peel resistance.

The invention relates to application of a compound with a flavone skeleton structure as a Parkinsonism treating medicine. The compound with a flavone skeleton structure is an inhibitor for the catechol methylation transferase; and the compound specifically comprises radix scutellariae, scutellarein and structure derivatives of radix scutellariae and scutellarein, and can be used as a synergist of the Parkinsonism treating medicine levodopa. In-vitro activity test indicates that IC50 of the compound in inhibiting catechol methylation transferase can reach nanomole level, wherein the COMT(Catechol O Methyl Transferase) inhibition activity of scutellarein and the derivatives of scutellarein is superior to that of medicine tolcapone on the market. The rat overall pharmacokinetic study shows that by the joint application of scutellarein and levodopa, the blood concentration of levodopa can be obviously increased. Moreover, the compound does not generate active intermediate through metabolism activation or form toxic adduct together with biological macromolecules, thus the hepatotoxicity and nephrotoxicity caused by metabolism activation are avoided, and the compound has good prospect of patent medicine.

The invention provides a planted roof root-resistance waterproof roll which is composed of 28-30 parts of asphalt, 2-6 parts of SBS (styrene butadiene styrene), 3-6 parts of SBR (styrene butadiene rubber), 1.6-7 parts of APP (ammonium polyphosphate), 15-23 parts of mixed grease, 3-6 parts of fire retardant, 10-13 parts of anti-migration plasticizer, 23-24 parts of polyvinyl chloride resin, 8-10 parts of portland cement powder, 1.0-1.2 parts of nano-zinc oxide, 1-5 parts of dibasic lead phosphate, 2-8 parts of terpolymer resin, 1-5 parts of ABS (acrylonitrile butadiene styrene) resin, 15-22 parts of 909 anti-freeze binder, 10-12 parts of polypropylene fibers and 0.8-1.2 parts of chemical root retardant. The roll is capable of resisting root puncture without influences on normal growth of plants, is waterproof for long term, is capable of forming a high-intensity waterproof layer with high pressure water resistance capacity, and further is fatigue resistant and is high in tensile strength; besides, due to the SBS modified asphalt coating layer with strong original nature, the roll has the advantages of high adaptability to shrinkage and crack of the base layer, excellent high-temperature and low-temperature resistance capacity, high adaptability to cold and hot regions, and high corrosion, mildew and weather resistance.

The invention provides a nano-titania surface modification method of natural stone material, belongs to the application field of coating nano-material, and relates to presentation of stone nano-material conception. The modification method comprises mixing 1-3 mol / L nano-titania sol with organic solvent to obtain mixture, coating the mixture onto the natural stone material or soaking the natural stone material into the mixture, drying at a low temperature, and sintering. The nano-titania has a particle size of 5-15nm, and a volume ratio of the nano-titania sol to the organic solvent is 1:(1.5-2.5). The obtained natural stone material surface modified by nano-titania has the advantages of transparent pure and natural color, retained appearance color of natural stone material, environment friendliness, no volatile sharp flavor, non-toxicity, no harm, excellent resistance to soiling, wide application range which is particularly suitable for production of household deck plate, and antibacterial, deodorizing, mould proofing, self-purifying, air cleaning and anti-fouling effects.

The preparation method includes following steps: according to certain ratio (wt), mixing 70-80% globular graphite, 12-25% melamine resin, 0.5-1% viscosity control agent, 0.1-0.5% mold release agent, 1-1.5% coupling agent, and 1-10% reinforcing agent for fiber of pole plate by blender, controlled mixing time 20 - 40 minutes; putting the preheated mixed materials into mould at 80 - 100 dig.C; carrying out pressure forming mixed materials in vacuum hydraulic press under 100 - 180 deg.C and 0.5 - 15 MPa, and controlled time of heat preservation as 2-50 minutes. Finished product is obtained after post treatment at 80 - 180 deg.C for 0.2 - 2 hours and cooled at room temperature. Quality of the prepared composite bipolar plate is accorded with standard.

The invention relates to the technical field of a pressure sensitive adhesive, in particular to an acrylic ester pressure sensitive adhesive, a pressure sensitive adhesive tape and a preparation method of the acrylic ester pressure sensitive adhesive. The acrylic ester pressure sensitive adhesive provided by the invention is prepared from the following raw materials in parts by weight: 8 to 12 parts of 2-ethylhexyl acrylate, 7 to 10 parts of butyl acrylate, 3 to 4 parts of acrylic acid, 4 to 6 parts of vinyl acetate, 3 to 4.5 parts of methyl methacrylate, 3 to 4 parts of hydroxyethyl methylacrylate, 2 to 3 parts of trimethylolpropane triacrylate, 4 to 6 parts of isoprene rubber with double bonds, 4 to 6 parts of SBS elastomers with double bonds, 45 to 60 parts of solvents and 0.3 to 0.6 part of initiating agents. The acrylic ester pressure sensitive adhesive provided by the invention uses the isoprene rubber and the SBS elastomers for modifying the acrylic ester pressure sensitive adhesive, so that the acrylic ester pressure sensitive adhesive has the advantages of acrylic ester, and also has the electrolyte-resistant and high-temperature-resistant performance of rubber; the defectof poor electrolyte-resistant and high-temperature-resistant performance of the existing acrylic ester pressure sensitive adhesive can be effectively overcome.