42results about How to "Leak quickly" patented technology

The invention relates to a preparation method of a mineral graphene reinforced ultra-high molecular weight polyethylene double-resistant pipe. The pipe is prepared from the following raw materials: 100 parts of ultra-high molecular weight polyethylene, 2-5 parts of nano-graphene sheets, 5-10 parts of a coupling agent, 0.1-1 part of a foaming agent, 0.1-1 part of a compatibilizer, 1-2 parts of a lubricating agent, 6-10 parts of a halogen-free flame retardant, 3-6 parts of an antistatic agent, 2-4 parts of a flow modifier, 1-3 parts of a nucleating agent, and the like; the graphene reinforced ultra-high molecular weight polyethylene double-resistant pipe is prepared by the processes of extruding, sizing, and the like. According to the preparation method, nano-graphene, the antistatic agent and the flame retardant are dispersed into ultra-high molecular weight polyethylene resin medium gaps by means of the coupling agent, the compatibilizer, the flow modifier, the lubricating agent, the nucleating agent, and the like; the nano-graphene sheets have significant synergistic flame retardation after being compounded with the flame retardant, and can reduce the resistivity of the pipe after being compounded with the antistatic agent. The prepared pipe has the characteristics of being light in weight, high in strength, flame-retardant, antistatic, and the like, thus being used in the operating environments such as coal mines, downhole and mines in which a great deal of gas exists.

The invention relates to a healthy polyolefine foam material and a preparation method thereof. The healthy polyolefine foam material is prepared from the following original auxiliary materials subjected to mixing, smelting, extrusion, preheating and foaming in parts by weight: 70-100 parts of polyolefine resin, 20-50 parts of anion functional master batch, 15-30 parts of hydrophilic functional master batch, 1-5 parts of a foaming agent, 1-5 parts of a cross-linking agent and 0-5 parts of color master batch. According to the healthy polyolefine foam material provided by the invention, the anion mineral materials and hydrophilic fullerene compounds are added into the formula, so that the foam material has the advantages of air purifying, surface oil contamination resistance, electrostatic prevention and the like; the anion concentration of ambient environment can be effectively increased in virtue of the pyroelectricity and piezoelectricity of the anion mineral material; besides, the hydrophilic groups of the hydrophilic fullerene compounds can form hydrogen bonds with water, so that the contact of pollutants and the polyolefine surface is prevented, accumulated static charges can be leaked quickly, and the antistatic purpose can be further achieved.

The invention discloses a high-filtration-loss plugging agent specially used for oil-based drilling fluid. The high-filtration-loss plugging agent is prepared from, by weight, 5-10 parts of fiber, 40-70 parts of a porous inert material, 10-25 parts of a percolating material and 5-10 parts of a filter aid; the porous inert material is a mixture of ceramic powder with the particle size of 180 meshesand ceramic powder with the particle size of 250 meshes, and the weight ratio of the 180-mesh ceramic powder to the 250-mesh ceramic powder is (4-6): (3-5); the percolating material is a mixture of zeolite powder with the particle size of 100 meshes and zeolite powder with the particle size of 150 meshes, and the weight ratio of the 100-mesh zeolite powder to the 150-mesh zeolite powder is (2-4):(4-7); the fiber is polyamide fiber, the length-diameter ratio is 5-50: 1, and the diameter is 0.5-15 microns; the filter aid is lime powder with the particle size of 200 meshes. The above componentsare uniformly mixed to obtain the high-filtration-loss plugging agent specially used for oil-based drilling fluid. The plugging agent disclosed by the invention is prepared by mixing various materials such as the fiber, the porous inert material, the percolating material and the filter aid, and is wide in application range, simple in plugging construction, high in safety and quick in effect.

The invention relates to a graphene island fiber and a manufacturing method thereof. The manufacturing method comprises the following steps of preparing graphene master batch from a functional graphene material through esterification polymerization, and then blending and melting the graphene master batch and PET to obtain a graphene island composition; melting and blending the graphene island composition and a soluble polyester marine composition to obtain graphene island protofilaments, and conducting working processes of bundling, drafting, tension heat setting, curling, oiling, relaxation heat setting, cutting and the like to obtain the graphene island fiber. The graphene island fiber can reduce the surface resistivity of a material, quickly release generated electrostatic charge, endowthe surface of the material with certain lubricity at the same time and further reduce the friction coefficient so as to inhibit and reduce the generation of electrostatic charge. The biocompatibility is high, and the graphene island fiber is a non-toxic, environment-friendly and efficient functional textile and has the far infrared function, antibacterial function, bacteriostatic function and antistatic function of graphene fibers.

The invention relates to a harvester for rhizomatic crops. The harvester comprises a rack, a scraper knife located at the front end of the rack, and a vibration screen located on the rear middle portion of the rack. Vertical rotating rolls are arranged at the two sides of the front end of the rack respectively, clearances are reserved between the rotating rolls and the rack, and the two rotating rolls are connected with a power shaft. At least one pair of annular secondary-primary sealing pieces is arranged in each rotating roll and located in the clearance between each bearing pedestal and a corresponding bearing pedestal shaft, the outer portions of the secondary-primary sealing pieces are in interference fit with the bearing pedestals, and the bearing pedestal shafts are arranged in center holes of the secondary-primary sealing pieces. A rear ridge pressing roll is arranged below the rear portion of the rack, and is hinged to the rack. The harvester is suitable for multiple soil types such as sandy soil, sandy loam and intermediate-viscidity soil; a tri-wheel vibration system is adopted, so that the separation effect of the crops and the soil is good, the harvesting rate is higher than 99%, and the breakage rate is lower than 1%. Due to the design of the rear ridge pressing roll and a collecting baffle, damage to the crops is reduced, the crops are centralized after falling to the ground, and harvesting is easy. Grass blocking is avoided, soil leakage is fast, and the service life is long.

The invention relates to a rhizomatic crop harvester. The rhizomatic crop harvester comprises a rack, a scraper knife located at the front end of the rack and a vibrating screen located on the rear middle portion of the rack; the two sides of the front end of the rack are each provided with a vertical rotating roller, gaps are reserved between the rotating rollers and rack, and the rotating rollers are connected with power shafts; at least one pair of annular child and mother sealing parts are arranged in the rotating rollers and located in gaps between bearing pedestals and bearing pedestal shafts, the exteriors of the child and mother sealing parts are in interference fit with the bearing pedestals, and the bearing pedestal shafts are arranged in central holes of the child and mother sealing parts; a rear ridge roller is arranged under the rear portion of the rack and hinged to the rack. The harvester is suitable for various soil types such as sandy soil, sandy loam soil and medium-viscosity soil; a three-wheel vibrating system is adopted, so that the crop and soil separation effect is good, the harvesting rate is higher than 99 percent, and the breakage rate is lower than 1 percent; the rear ridge roller and a collection baffle are designed, so that crop damage is reduced, crops are concentrated after falling to the ground and easy to harvest; grass cannot block the harvester, soil leakage is fast, and the service life is long.

The invention relates to a preparation method of a carbon nanotube reinforced light-weight wood-plastic composite material. The composite material is composed of the following raw materials in percentage by mass: 30-70% of plastic matrix, 30-70% of plant powder, 0.5-3% of carbon nanotube, 3-8% of coupling agent, 0.1-1% of foaming agent, 0.1-1% of compatibilizer, 1-3% of lubricant, 2-4% of toughener and 0.01-0.1% of peroxide and other functional aids. By using the coupling agent, dispersing agent, lubricant and other aids, the small amount of carbon nanotubes are dispersed in both a matrix phase and a wood powder-plastic interface phase as well as in medium gaps; and the right amount of foaming agent is added to realize micro foaming treatment so as to reduce the density of the composite material, thereby enduing the wood-plastic composite material with the favorable characteristics of light weight and high strength. The prepared wood-plastic composite material has the advantages of no toxicity, water resistance, safety, low price and the like, has the favorable characteristics of light weight, high strength, electrostatic prevention and the like, and widens the wood-plastic composite material service environment and application range, thereby having wide economic prospects and social benefits.

The invention provides a processing method of spunlace non-woven fabric. The spunlace non-woven fabric comprises the following components in parts by weight of 20-30 parts of polyester, 20-30 parts of wood pulp fibers, 5-10 parts of antistatic fibers, 10-20 parts of viscose fibers and 10-20 parts of alginate fibers. A fiber web is soaked in a water solution with hydrogen peroxide content of 30%, washing and dewatering are conducted after soaking, and the antibacterial effect of the non-woven fabric can be effectively improved; meanwhile, a certain bleaching effect can be achieved, the wood pulp fibers of coniferous wood fibers are added, the overall texture of the non-woven fabric can be effectively improved, and the use hand feeling is improved; and the alginate fibers are added, so that the water absorption performance of the non-woven fabric can be effectively improved, and the use is convenient.

The invention relates to a rhizomatic crop harvester. The rhizomatic crop harvester comprises a rack, a scraper knife located at the front end of the rack and a vibrating screen located on the rear middle portion of the rack; the two sides of the front end of the rack are each provided with a vertical rotating roller, and gaps are reserved between the rotating rollers and rack; at least one pair of annular child and mother sealing parts are arranged in the rotating rollers and located in gaps between bearing pedestals and bearing pedestal shafts, the exteriors of the child and mother sealing parts are in interference fit with the bearing pedestals, and the bearing pedestal shafts are arranged in central holes of the child and mother sealing parts; the scraper knife is in the shape of a trapezoid, a knife edge and a knife back serve as the two bottom edges of the trapezoid, and the knife back is longer than the knife edge; an outer transmission wheel of the vibrating screen is fixed on a side plate of the rack through a flange, and a sliding groove structure for fixing the flange is arranged on the side plate of the rack and comprises a transmission shaft position regulation groove and bolt position regulation grooves. The harvester is suitable for various soil types, the crop and soil separation effect is good, the harvesting rate is higher than 99 percent, and the breakage rate is lower than 1 percent; crops are concentrated after falling to the ground and easy to harvest, grass cannot block the harvester, and the service life is long.

The invention discloses a UV viscosity-reducing adhesive with an antistatic effect and a preparation method of the viscosity-reducing adhesive. The UV viscosity-reducing adhesive is prepared from the following materials in percentage by mass: 43 to 45 percent of dual-curable polyurethane acrylate pressure-sensitive adhesive, 0.1 to 0.5 percent of trimethylolpropane triglycidyl ether cross-linking agent, 1.5 to 2.0 percent of photoinitiator 184, 3.0 to 5.0 percent of antistatic agent and 50 percent of ethyl acetate. The dual-curable polyurethane acrylate pressure-sensitive adhesive is prepared by adopting a free radical polymerization process to carry out random copolymerization and then carrying out addition polymerization: 16 to 20 parts of n-butyl acrylate, 21 to 25 parts of 2-ethylhexyl acrylate, 8 to 10 parts of hydroxyethyl acrylate, 4 to 5 parts of acrylic acid, 3 to 4 parts of benzoyl peroxide, 33 to 36 parts of pentaerythritol triacrylate, 7 to 9 parts of isophorone diisocyanate, and 100 parts of acetic ether. The UV viscosity-reducing film has relatively high peel strength after being thermally cured, and the peel strength is greatly reduced after being irradiated by UV light; and the introduction effect of the antistatic agent is good. The adhesive-reducing film is not easy to form residual adhesive on the surface of the protected material.

The invention relates to the agricultural machinery and in particular relates to a further improved multipurpose harvesting machine for tubers of crop rootstalks including potatoes, yams and the like, specifically to a rotary disc type tubers harvester. The harvester provided by the invention takes a rotary disc separating device as a body and is characterized by that: the rotary disc separating device is installed between an upper circular bracket and a lower circular bracket, an input opening and a digger shovel are distributed in front of the rotary disc separating device, the upper end ofthe input opening is connected with a suspension bracket and a dragging bracket, and the rotary disc separating device is equipped with a convex cone-shaped rotary disc mechanism or a concave cone-shaped rotary disc mechanism. The harvester provided by the invention can rapidly and completely separate soil and sieve tubers and is not easy to cause mechanical damages, prolongs the service life of the machine, is not easy to cause clay, reduces abrasion on the tubers, and has a safe use; meanwhile, the harvester has a flexible movement, can be suitable for the work of different soils, reduces construction cost, and has a light weight and the like.

The invention provides a charged foreign matter clearing unmanned aerial vehicle protection cover, which comprises a first connecting plate and a second connecting plate, wherein the end part of the first connecting plate and the end part of the second connecting plate are mutually hinged; one end of the first connecting plate is provided with a second fixing ring; the upper part of the second fixing ring is provided with an upper protection net; the upper protection net comprises a plurality of first arc-shaped rods, a copper wire layer and a first fixing ring. The first arc-shaped rods and the second arc-shaped rods are respectively made of carbon fiber, so that the first arc-shaped rods and the second arc-shaped rods can ensure the sufficient intensity of the charged foreign matter clearing unmanned aerial vehicle protection cover, and meanwhile, the weight of the charged foreign matter clearing unmanned aerial vehicle protection cover is reduced to the maximum degree. The first arc-shaped rods and the second arc-shaped rods can surround a rotor of a charged foreign matter clearing unmanned aerial vehicle for preventing foreign matters from falling on a vehicle body of the unmanned aerial vehicle and from being wound and collided with the rotor, and the influence on the normal work of the unmanned aerial vehicle is avoided.

The invention discloses external wall elastic emulsion with an antistatic effect and a method for preparing the external wall elastic emulsion. The external wall elastic emulsion comprises, by weight,90-120 parts of deionized water, 10-30 parts of iso-octyl acrylate, 60-80 parts of butyl acrylate, 20-35 parts of styrene, 5-15 parts of methyl methacrylate, 0.1-2 parts of acrylic acid, 0.1-1.5 parts of methacrylic acid, 0.1-1 part of acrylamide, 0-0.5 part of methacrylamide, 0-0.5 part of hydroxyethyl acrylate, 3-10 parts of acrylonitrile, 0.5-3 parts of acid anhydride functional monomers, 0.5-4 parts of diethanolamine, 0.1-3 parts of modified organophosphate high polymers, 1-8 parts of emulsifiers, 0.1-5 parts of initiators and 0.3-4.5 parts of ammonia water. The external wall elastic emulsion and the method have the advantages that the antistatic effect can be realized by the external wall elastic emulsion, the external wall elastic emulsion is excellent in stain resistance, and the excellent normal-temperature and low-temperature elasticity of the external wall elastic emulsion can be kept.

The invention provides an antistatic master batch. The antistatic master batch comprises, by mass, 42% of polyethylene, 15% of calcium carbonate, 40% of an antistatic auxiliary agent, 2% of an anti-oxidant and 1% of a slipping agent. The invention also provides a preparation method for the antistatic master batch. The preparation method can prevent a produced polyethylene film product from the problem of static residues, enables the antistatic master batch to maintain a good dispersion and mixing degree, and allows the surface of the product to be stable, durable, antifrictional and solvent-resistant.

The invention discloses an air conditioning system with a pressure relief function. The air conditioning system comprises a compressor, a condenser, an expansion valve, an evaporator and a gas-liquid separator. A pressure relief branch is arranged between an inlet pipe of the condenser and an inlet pipe of the evaporator, an electromagnetic valve is serially connected in the pressure relief branch, and turning on and turning off of the electromagnetic valve are staggered and synchronized with turning on and turning off of the compressor. Since the pressure relief branch is arranged between the inlet pipe of the condenser and the inlet pipe of the evaporator, a high-pressure refrigerant in the condenser can be quickly released into low-pressure refrigerant of the evaporator, pressure balance of a refrigerating system is quickly established, and pressure difference is prevented from existing in the system when the compressor is started again; meanwhile, diameter of the pressure relief branch is large, so that oil return of the refrigerating system is well guaranteed, and heat exchange effect of the system is improved; moreover, a pressure sensor is further arranged at the position of the electromagnetic valve, pressure relief information can be fed back to an air conditioning control system by the pressure sensor, and accordingly convenience is brought to the control system to adjust states of an air conditioner.

The invention discloses a preparation method of graphene short plush, and relates to the technical field of production of preparation methods of graphene short plush. The method comprises the steps of weaving, pre-shaping, napping, printing and dyeing pretreatment, heat shaping printing or dyeing, softening finishing, ironing and shearing and finished product shaping, and is characterized in that a warp knitting machine is adopted for weaving, and DTY is obtained as surface yarns by adding 1-15% of graphene master batch into polyester chips and carrying out melt spinning, wherein medium yarns and bottom yarns are FDY obtained by adding 1-15% of graphene master batch into polyester chips and performing melt spinning. By adopting the production process provided by the invention, natural antibacterial, anti-mite, anti-static, far-infrared and ultraviolet functions and the like can be achieved. Therefore, the environment-friendly graphene short plush is developed.

The invention discloses a production process of an anti-static suit fabric. The production process comprises the following steps that an outer-layer fabric is treated by using an alkali-oxygen cold pad-batch process; then the outer-layer fabric is pre-shaped, and dyeing pretreatment is carried out on the outer-layer fabric; then padding the dried fabric is sequentially padded in a fatty acid methyl ester ethoxylate sodium sulfonate solution, a reactive dye solution and an anti-static treatment solution, and color fixation, water washing, soaping, drying and soaping are carried out; and the outer-layer fabric and the inner-layer fabric are bound and fixed by adopting binding warp yarns. The problems that the suit is thick and heavy, has no stereoscopic impression and affects the aesthetic feeling are solved; by adding the anti-static liquid, phosphate ester salt groups in the anti-static liquid and hydrogen bonds of water molecules in the air act on the fiber surface to form a conductive layer, so that the surface resistivity is reduced, and the generated static charges are quickly leaked, so that the anti-static property of the suit fabric is improved.