50results about How to "No environmental protection" patented technology

The invention discloses a polyester fiber solvent carrier stock solution dyeing technology before spinning, and belongs to the field of chemical fiber production. The polyester fiber solvent carrier stock solution dyeing technology before spinning comprises the following steps: (1) dye and a solvent carrier are mixed into uniform dye stock solution used for solution dyeing before spinning; (2) the dye stock solution is poured into a polyester melt in a pipeline through a metering injection device, and is mixed; (3) the polyester melt and the dye stock solution are evenly mixed through a mixing assembly; and (4) after being mixed, the polyester melt and the dye stock solution enter a melt metering device, and after being metered, the polyester melt and the dye stock solution are sent a spinning assembly to spin. Compared with a maternal dyeing method, the polyester fiber solvent carrier stock solution dyeing technology has the advantages of being pollution-free, environment-friendly and energy-saving because the production process is short, and the mixing temperature (<=150 DEG C) of the dye solution is low.

The invention discloses flame retardant paper containing rare earth-containing hydrotalcite, and a preparation method and an application thereof. The preparation method of the flame retardant paper containing the rare earth-containing hydrotalcite comprises the steps: firstly, synthesizing binary, ternary, quaternary, pentabasic or hexabasic hydrotalcite containing lanthanum, cerium, samarium, terbium, europium and other rare earth elements, then directly adding 5 to 300 parts of the rare earth-containing hydrotalcite into 100 parts of paper fibers by an intra-pulp addition method, a dipping method or a coating method, or modifying 100 parts of the paper fibers with 5 to 300 parts of the rare earth-containing hydrotalcite by a self-assembly method, and finally papermaking in a paper former to obtain the flame retardant paper. The flame retardant paper containing the rare earth-containing hydrotalcite utilizes the synergistic flame retardant function of the rare earth elements, so the flame retardant effect is substantially improved, and the mechanical properties are excellent. The flame retardant paper containing the rare earth-containing hydrotalcite has the characteristics of environmental protection, high efficiency and no pollution; the preparation method of the flame retardant paper is simple and diverse, and is suitable for industrial production. The flame retardant paper containing the rare earth-containing hydrotalcite can be widely applied to packaging, building and living paper and other fields.

The invention discloses a room-temperature curing ethyl lactate removal type silicone sealant which comprises the following components in parts by weight: 10-60 parts of alpha-omega-dyhydroxy polydimethylsiloxane, 30-150 part of methyl polydimethylsiloxane, 80-200 parts of active nano calcium carbonate, 5-20 parts of an ethyl lactate cross-linking agent, 0.5-10 parts of a saline coupling agent and 0.1-5 parts of a catalyst. Due to adoption of the ethyl lactate cross-linking agent, environmental-friendly ethyl lactate micromolecule substances can be released in the curing process, a substrate is not corroded, a moderate deep layer curing speed is achieved, the sealant is adopted for adhering and sealing various products, has the advantages of environmental-friendliness and no corrosion, and is simple in production process and applicable to large-scale industrial production.

The invention relates to a method for dehydrating municipal sludge, which comprises the following steps: putting the municipal sludge into a sealed reactor, and pyrolyzing the sludge for 1 to 2 hours at a low temperature of between 60 and 80 DEG C; drying the municipal sludge after the low-temperature pyrolysis naturally or drying the same by blasting for 6 hours so that the moisture content of the municipal sludge is reduced to be less than 10 percent; evenly mixing the dried sludge with a chemical activating agent according to the weight ratio of 25:1-5, dehydrating the sludge for 30 minutes at a lower temperature of between 300 and 500 DEG C, and activating the sludge for 60 minutes at a high temperature of between 500 and 900 DEG C; and performing rinsing or acid cleaning on the sludge, and drying the sludge to prepare a high-performance adsorbing material as an environmental material for controlling sewage. The method is environment-friendly and energy-saving.

The invention discloses a preparation method of silane coupling agent modified solvent-free waterborne polyurethane, and the method comprises the following steps of: 1) drying polyol, and controlling the water content in the polyol to be lower than 0.05%; 2) uniformly mixing the polyol dried in the step (1) with isocyanate, performing heating and carrying out reaction, then adding a chain extender, a hydrophilic chain extender and 1 part of a catalyst, and uniformly mixing the substances to obtain a solvent-free waterborne polyurethane prepolymer; 3) adding an alkaline aqueous solution into the solvent-free waterborne polyurethane prepolymer in the step (2), and fully mixing the substances for emulsifying under high-speed stirring to obtain a waterborne polyurethane emulsion; and 4) reacting the solution system obtained in the step (3) with a compound containing two or more amino groups, then adding a silane coupling agent, and dropwise adding a defoaming agent after complete reaction to obtain the silane coupling agent modified solvent-free waterborne polyurethane. The preparation process is simple, and the prepared solvent-free waterborne polyurethane is excellent in mechanical property and good in heat resistance.

A touch screen comprises a substrate, first conducting strips, a coating adhesive layer, second conducting strips, a first electrode lead and a second electrode lead, wherein the first conducting strips are formed on the substrate, are formed by indium tin oxide and extend in the first direction; the coating adhesive layer covers the first surface of the substrate and the first conducting strips; the second conducting strips are embedded in the coating adhesive layer, are composed of conducting meshes embedded in the coating adhesive layer, and extend in the second direction, and the first conducting strips and the second conduct strips are arranged at intervals; the first electrode lead and the second electrode lead are arranged on one side, far away from the substrate, of the coating adhesive layer, one end of the first electrode lead and one end of the second electrode lead are electrically connected with the first conducting strips and the second conducting strips, the first electrode lead comprises a lead portion and a penetrating portion embedded in the coating adhesive layer, and the penetrating portion extends from one side, away from the substrate, of the coating adhesive layer to the surfaces of the first conducting strips and is electrically connected with the first conducting strips. The thickness of the touch screen is relatively small. The invention further provides a preparation method of the touch screen.

Belonging to the technical field of modified polyamide, the invention relates to a glass fiber reinforced, easy dyeing, laser marking, halogen-free, environment-friendly and flame retardant nylon 66 composite material and a preparation method thereof. The composite material comprises the following raw materials by weight: 30-50 parts of nylon 66, 20-40 parts of alkali-free short glass fiber, 15-30 parts of a halogen-free flame retardant, 3-8 parts of a synergistic coloring flame-retardant additive, 0.5-2 parts of a laser marking additive, and 0.5-1.5 parts of other additives, i.e. a compound of a silane coupling agent, an antioxidant and a dispersant. The composite material is mainly used in bearing covers, electrical junction boxes, row plug-in pieces and the like in automobiles, machinery, electrical and electronic appliances and other industries, and can be applied to components and parts with high requirements for environmental protection and safety, flame retardance, laser marking, intensity and color.

The invention discloses a temporary plugging workover fluid for a low-pressure carbonate reservoir gas well and preparation and an application method of the temporary plugging workover fluid. The temporary plugging workover fluid is composed of two slugs, wherein one is a low-solid phase water-locking type temporary plugging fluid slug, and mainly plays roles of forming a temporary plugging layerat a blasthole, bearing pressure of an upper fluid column and balancing formation pressure difference; the other slug is a water-based anti-swelling inhibitor slug, and mainly plays a role of furtherreducing damage caused by a small amount of workover fluid entering the reservoir due to micro-leakage. The temporary plugging workover fluid provided by the invention has the characteristics of lessleakage, small reservoir damage, strong pressure bearing capacity and water-locking capacity, good universality, non-toxicity, harmlessness, convenient construction, easy flowback, high safety, environmental protection and the like, is mainly used for temporarily plugging and killing the well in the carbonate reservoir during workover, is particularly suitable for workover of the low-pressure carbonate reservoir gas well having tubular columns with packers, and can reduce the damage of the workover fluid to the formation.

The invention provides an efficient green pesticide and a production method thereof. The efficient green pesticide is prepared from a vegetable insecticide and special addition agents, and is characterized in that the vegetable insecticide is prepared from 28kg-38kg of wild anise, 10kg-18kg of peppers, 14kg-20kg of celastrus angulatus, 26kg-36kg of stropanthus divericatus and 20kg-30kg of chinaberry seeds; the addition agents comprise 8kg-11kg of an emulsifying agent, 9kg-15kg of turpentine, 4kg-6kg of a penetrating agent, 0.6kg-1.5kg of a preservative and 22kg-28kg of ethanol; the weight ratio of the vegetable insecticide to the addition agents is 1 to 1. The green pesticide provided by the invention is efficient, secondary-toxin-free and residue-free, does not pollute the environment and can keep ecological balance.

The invention discloses a biological fermentation composite treating agent for harmless treatment of sewage. The biological fermentation composite treating agent comprises raw materials including deacetylate chitin, tyrosinase, polyacrylamide, polyvinyl pyridine, compound microbial bacteria, enzyme microorganism, microbiological nutrient agent, folium eucalypti extracts, common ducksmeat herb extracts, tealeaf extracts, lauryl methacrylate, deacetylate chitosan, red non-sulfur bacteria and a demulsifying agent; by sufficiently utilizing the characters of mutual containment, backscratching and functional complementation among each component, macromolecular organic matters, artificially synthesized polymers and the like with poor biochemical property in sewage are decomposed into simple low-molecular-weight organic matters to the greatest extent, new trash or pollutants cannot be produced in a treatment process, the removal rate of ammonia nitrogen is high, and the concentration of BOD and COD can be effectively reduced; organic matters in the water can be automatically decomposed by microorganisms, the microorganisms can automatically get to a water surface to breathe oxygen, the produced sludge volume is little so as not to cause secondary pollution, the construction period can be shortened, and the comprehensive cost is reduced.

A self-powered electrochromic supercapacitor includes a nano-generator (a), a rectifier (b) and an electrochromic supercapacitor (c), wherein the anode electrode (1) and the cathode electrode (3) of the nano generator (a) are respectively connected with the AC input terminal of the rectifier (b), and the DC output terminal of the rectifier (b) is respectively connected with the transparent anode electrode (4) and the transparent cathode electrode (7) of the electrochromic supercapacitor (c) to form a complete circuit. The self-powered electrochromic supercapacitor can achieve collection-conversion-storage-application of energy from human body, can collect energy when a human body moves and then utilizing an electrochromic supercapacitor (c) to store the energy after the energy is converted, which can be used for monitoring and collecting physiological signals of a human body without external energy supply, and can be used in combination with wearable equipment for monitoring human bodyhealth.

The invention relates to a method for determining a plasticizer through ultrahigh pressure assisted liquid-liquid micro extraction. The method comprises the following steps: dispersing a sample to be detected with distilled water, carrying out solid-liquid separation to remove solid substances, adding 5.0-25g of inorganic salt into 25-50ml of filtrate and putting into a double-layer composite bag; or directly obtaining 25-50ml of the sample to be detected, or filtrate of the sample to be detected or liquid supernatant obtained after centrifugation of the sample to be detected, adding 5.0-25g of inorganic salt and putting into the double-layer composite bag; and adding 0.5-5.0mL of organic solvent, then sealing the double-layer composite bag, placing the double-layer composite bag into an ultra high pressure treatment cavity for ultra high pressure treatment for 1-10min under the pressure of 200-900 MPa, taking out an organic phase after treatment, and quantitatively detecting the content of the plasticizer by use of a gas chromatography-mass spectrometer. The method is carried out at normal temperature, the measurement speed is high, no side reaction is caused, the method is environment-friendly, the repeatability is good and the monitoring requirement for the trace plasticizer can be met.

The invention discloses a nano-modified sodium acetate trihydrate phase change heat storage material and a preparation method thereof. The material is composed of, by mass, 90-99 parts of sodium acetate trihydrate, 0.5-2 parts of nano-particles, 0.5-2.5 parts of cellulose and 5-10 parts of graphite, wherein the nano-particles are at least one or a composition of neutral particles and polar particles, the nano-particles do not chemically react with water, and the average particle size of the nano-particles is smaller than 50nm. The phase change temperature is 54-58 DEG C, the degree of supercooling is less than 4 DEG C, and the latent heat of phase change is more than 200kJ / kg. The nano-particles are adopted for modification, the thermal cycle stability of the sodium acetate trihydrate phase change material is improved, and no thermal performance attenuation exists after the material is subjected to 800 times or more of heat charging and discharging cycle tests. The phase change material is green and environmentally friendly, the preparation method is simple, batch production is easy to achieve, stable access of heat is facilitated, and the heat conversion efficiency is improved.

An agricultural chemical without residue is proportionally prepared from the vegetative insecticide prepared from 6 Chinese-medicinal materials including coptics root, pepper, bitter orange, camphor, etc, emulsifier, turpentine, penetrant, antiseptic and alcohol.

The invention belongs to the field of mine and road construction, and particularly relates to a hydraulic silent directional rock breaking device. The device comprises a truck, filters, a diesel engine, a high-pressure pump, a limiting block, a compression nut, special wedge-shaped sealing blocks, an upper pull rod, a pressure-bearing tube, a flow guide pipe, a rubber plug, spacer bushes, an upperpiston, a lower piston, wedge-shaped bodies, cutting ferrules and the like. By means of hydraulic pressurization of the high-pressure pump and a special hole sealing structure, silent directional large-area rock breaking is achieved, the problems of vibration, flying rock, dust, noise and the like in the construction process are avoided, and the device is applicable to hard and brittle rock withvarious strengths and various hole sizes and is also applicable to porous rock or rock with certain elasticity. The rock breaking direction is controllable, the rock breaking efficiency is effectivelyimproved, and the construction cost is reduced.

The invention discloses a flat high-voltage transformer, which comprises a magnetic core and a winding, wherein the winding comprises at least two primary windings and a plurality of secondary windings; each primary winding is wound by an electromagnetic wire or a copper strip; each secondary winding is wound by the electromagnetic wire; the primary windings and the secondary windings are sequentially arranged in a ring relative to the center of the magnetic core from the inside to the outside; and interblock insulators are arranged between the adjacent primary windings and secondary windings and between the adjacent secondary windings. According to the flat high-voltage transformer, when various performance requirements of the flat high-voltage transformer are met, the development period is shortened; the manufacturing cost is reduced; and the flat high-voltage transformer is relatively environment-friendly. The invention further discloses a manufacturing method of the flat high-voltage transformer. The manufacturing method comprises the following steps: wrapping a bottom insulator; winding the primary windings and wrapping the interblock insulators; winding the secondary windings and wrapping the interblock insulators; repeating the steps for N times; winding the primary windings and wrapping an outer insulator; assembling the windings, the magnetic core and a housing; and filling a potting compound. The flat high-voltage transformer is simple in procedure and high in manufacturing efficiency; and the process is relatively easy to control.

The invention discloses a cold-hot water mobile phone charging and coal / gas stove semiconductor temperature difference power generation device, which comprises a superconductive heat tube, a semiconductor cooling plate, a heat collector, a storage battery, a current regulator, a power supply connecting seat, a home appliance connecting seat, a charging regulator, a cold water cup, a hot water cup, a stove, a heat source, briquets, carbon, firewood or fuel gas, an insulating ring a cold water tank, a water discharge / supply value, a drainage valve, an electromagnetic valve, a fan, a light emitting diode lamp, a power supply switch and a computer / television. The device of the invention can generate power upon pouring hot water and running water in the two cups respectively to charge the mobile phone and, in the coal / gas stove, uses waste heat to generate power. The device can be placed in any facility cooled by water (or air) to generate power, has obvious waste heat recycling, energy saving and consumption reducing effects, is easy to manufacture, long in service life, reliable, low in cost and convenient to popularize and promote, has energy-saving and emission-reducing social and economic benefits, represents an inevitable development trend at present and in future. Thus, the device has a great significance.

The invention discloses a biopesticide for planting organic vegetables. The biopesticide for planting organic vegetables consists of the following components in parts by weight: 0.1-0.6 part of bdellovibrio powder, 1-2 parts of bacteriophage powder, 0.1-0.2 part of green muscardine fungus powder, 0.1-0.2 part of Thompson hirsutella thompsonii powder, 5-8 parts of aconite, 3-8 parts of coptis chinensis, 1-3 parts of pepper, 10-20 parts of penetrating agents, 10-19 parts of ethyl alcohol, 1-10 parts of synergists, 5-20 parts of dandelion, 0.5-1.5 part of mineral oil, 0.05-0.1 part of growth regulators, 0.5-1.2 parts of stabilizers, 100 parts of water and the like. The organic residue-free fruit-vegetable environment-friendly pesticide disclosed by the invention is a novel pesticide which is high in efficiency, has pertinence and an environment-friendly property, has no secondary toxicity, residue and pollution, keeps the ecological balance, and is nuisanceless, is the important guarantee for achieving ecological agriculture, environment-friendly ecological agriculture and environment-friendly enterprises, and has a wide prospect.

The invention discloses a nuisanceless green microbial pesticide for fruits and vegetables, and the pesticide is characterized by comprising the following components in parts by weight: 0.01-0.03 parts of bacteriophage powder, 0.01-0.03 parts of green muscardine fungus powder, 20-25 parts of coptis root, 10-15 parts of pepper, myrrh, myrobalan, 20-30 parts of marijuana, 10-20 parts of serrate chloranthus root, 15-20 parts of artemisia annua leaf, 20-30 parts of tobacco, 10-15 parts of phytolacca, 10-20 parts of radix stemonae, 15-20 parts of chinaberry, 4-10 parts of camphor, 12-18 parts of houttuynia cordata, 5-18 parts of andrographis paniculata, and 100-150 parts of water. The novel nuisanceless residual-free green pesticide for the fruits and the vegetables is a novel efficient, targeted, environment-friendly, secondary-toxicity-free, residual-free, pollution-free and nuisanceless pesticide which maintains ecological balance, is an important guarantee for realizing ecological agriculture, green ecological agriculture, and green enterprises, and has a broad prospect.

The invention provides a tidal power generation systemdevice, which belongs to the field of renewable energy. The structure of the tidal power generation systemdevice comprises a floating disk and linear racks, the floating disk is arranged on the sea level, the linear racks are fixed on the floating disk, gears drive rotation accelerators, clutches and generators by means of the linear racks to generate electricity, and are also connected with spiral spring accumulators to wind up the spiral spring accumulators, energy can be converted into electric energy as the floating disk is driven by the buoyancy of seawater to go up and down, and thereby therefore the power generation rate of the conventional power generation systemdevice is unmatchable with the power generation rate of the tidal power generation systemdevice. Compared with the conventional technical scheme of power generation, the tidal power generation systemdevice can theoretically double the power generation rate at least, the spiral spring accumulators are energy accumulation mechanisms which can convert the kinetic energy and gravitational potential energy of up-and-down seawater into spring potential energy, and can store and convert the energy of the reciprocating intermittent action of tides into elastic potential energy which is utilized, the energy utilization rate can reach 95 percent, energy can be continuously and stably released, and the tidal power generation systemdevice can supply inexhaustible energy to people.

The invention discloses a self-heat-insulated lightweight-aggregate module. Self-heat-insulated products of different weights and strengths are produced through sintering wastes such as tailings, sludge, coal gangue, shale and pulverized coal ash so as to prepare lightweight aggregates or haydite, taking the lightweight aggregates or haydite and panned sand (the main aim is to lighten weight and improve stability and strength) as main homemade raw materials, preparing stony materials such as volcanic rock (basalt and pumice), of which the volume weight is smaller than 1,200kg, adding a certain ratio of cement as a cementing agent, and then, adding a proper foamer in a matched use manner. According to the self-heat-insulated lightweight-aggregate module, the materials used are all wastes and industrial waste residues, the disadvantage of building is overcome, and a great contribution to environmental governance is made, so that the self-heat-insulated lightweight-aggregate module is a good multipurpose product.

The invention discloses a non-polluted residue-free green pesticide for fruits and vegetables. The non-polluted residue-free green pesticide is characterized by being prepared from a vegetable insecticide and a special aid, wherein the vegetable insecticide consists of 28 to 35kg of golden thread, 20 to 25kg of pepper, 15 to 20kg of trifoliate orange, 18 to 28kg of sessile stemona root, 15 to 20kg of Szechwan chinaberry fruit, 4 to 10kg of camphor and 5 to 10kg of pricklyash peel; the aid comprises 7 to 11.5kg of emulsifying agent, 5 to 8kg of turpentine, 2 to 5kg of penetrant, 1 to 1.5kg of preservative and 12 to 20kg of 85 to 95 percent ethanol; and the weight ratio of the vegetable insecticide to the aid is (1.5-2):1. The non-polluted residue-free green pesticide is a novel pesticide having the advantages of environmental protection, no secondary toxicity, high efficiency, no residue, no pollution and capacity of keeping ecological balance, is great guarantee for realizing ecological agriculture, green ecological agriculture and environment-friendly agriculture, and has a broad prospect.

The invention provides a high-temperature-resistant composite antibacterial agent and a preparation method thereof. The composite antibacterial agent is prepared from the following components: chitin,a chitosan solution, a zinc lactate solution, a starch solution, a sodium hydroxide solution, a hydrochloric acid solution, an enzymatic hydrolysate, ethyl acetate, a dopamine solution, calcium oxide, a silver nitrate solution and deionized water. The prepared antibacterial agent is high in antibacterial efficiency and resistant to high temperature, the preparation method is simple and low in cost, the particle size of the antibacterial agent is uniform, no agglomeration phenomenon occurs, and the antibacterial agent has excellent antibacterial property.

The invention discloses a method for preparing biopesticide for organic spinach cultivation. The method comprises the following steps: A, extracting a leaching solution of traditional Chinese medicine compositions including the rhizome of Chinese monkshood, the rhizome of Chinese goldthread, pepper, monkshood, lycoris radiate, dandelion, purslane, cocklebur fruit, cordate houttuynia and andrographis paniculata: after washing, smashing into 150-200 meshes of powder; adding water to soaking for 3 hours, and then stewing; after repeatedly stewing for 3-5 times, filtering out medicine residues to obtain soup, and ultraviolet-sterilizing to obtain the leaching solution for standby application; B, adding bdellovibrio powder, phage powder, green muscardine fungus powder and hirsutella thompsonii powder into an emulsifier, a penetrant and water to be mixed into a solution for standby application; C, adding oil of turpentine and mineral oil into ethyl alcohol, and fully dissolving for standby application; D, adding a synergist into the leaching solution obtained in the step A and then uniformly stirring, and mixing with the solution obtained in the step B and the solution obtained in the step C; after becoming effective, adding a growth regulator and a stabilizer; after mixing, diluting into a solution being 100 times of volume to obtain the biopesticide for organic spinach cultivation. The no-residual fruit and vegetable green pesticide has high efficiency, pertinence, environmental friendliness, no secondary toxicity, no residue, no pollution and no public harm and keeps ecological balance.

The invention relates to a sticky trapping type mosquito killer. The sticky trapping type mosquito killer comprises a bracket, a rolling shaft, a glue box, a glue scraping plate, a mosquito luring lamp tube, a receiving box, a motor and an electric appliance element assembly, wherein the rolling shaft is transversely arranged in the bracket; the glue box is arranged at the upper part of the bracket; a glue falling groove is formed in the bottom surface of the glue box, and glue left from the glue falling groove is applied to the surface of the rolling shaft by coating; the mosquito luring lamp tube is arranged on the bracket or outside the glue box; the receiving box is arranged in the bottom of the bracket; the motor is in driving connection with the rolling shaft; the electric appliance element assembly is electrically connected with the mosquito luring lamp tube and the motor. After the rolling shaft which slowly rolls is coated with the glue automatically, the glue on the rolling shaft is used for sticking the mosquitoes lured by the mosquito luring light, and the glue stuck with the mosquitoes is scraped by the glue scraping plate and is collected by the receiving box, so that the effect of killing the mosquitoes is achieved; and therefore, the situations that the environment is polluted, the use cost is high and the use is inconvenient due to the fact that the mosquito sticking paper is replaced are avoided.

The invention discloses a biological environmentally friendly pesticide for organic fruits and vegetables, and the biological environmentally friendly pesticide consists of the following components by weight: 0.1-0.6 part of bdellovibrio powder, 0.3-0.6 part of bacillus thuringiensis powder, 0.6-0.8 part of aschersonia powder, 1.5-2.6 parts of insecticidal bacteria powder, 3.6-4.8 parts of Japanese beetle bacillus powder, 2-9 parts of lophatherum gracile, 11-15 parts of coptis chinensis, 33-42 parts of phytolacca acinosa, 10-20 parts of aconitum, 12-18 parts of houttuynia cordata thunb, 5-18 parts of andrographis paniculata, 0.5-1.5 parts of mineral oil, 0.05-0.1 part of a growth regulator and 100 parts of water. The residue-free green pesticide for the organic fruits and vegetables is a new pesticide which is high-efficiency, purposeful, environmentally-friendly, free of secondary toxicity, residue and pollution, can keep ecological balance, is an important guarantee for realization of ecological agriculture, green ecological agriculture and green enterprise, and has broad prospects.

The invention provides a temporary plugging well killing fluid for fractured reservoirs and application and a preparation method thereof. The temporary plugging well killing fluid comprises a base solution and degradable shape memory polymer particles, the base solution is a composite gel, the degradable shape memory polymer particles are composed of polymers with different deformation recovery amounts, and the degradable shape memory polymer particles are injected into a reservoir stratum through a base solution carrying pump, enter a fractured reservoir stratum, expand due to temperature response, and recover the shape. Temporary plugging and well killing can be achieved for a fractured gas well, low-damage well repair of low-pressure-coefficient and ultralow-pressure-coefficient and low-yield gas wells can be met, the fluidity is good at the ground temperature, and pumping injection is easy. After entering the fractured reservoir, the pressure bearing performance is rapidly improved, the subsequent clear water workover fluid loss is greatly reduced, the operation safety is ensured, and the reservoir damage is reduced. Shape memory polymer particles with different degradation periods can be selected according to the operation requirements, and can be completely degraded after the operation is completed, and the flow-back and the production recovery are fast.

A USB socket structure comprises a front cover with a cylindrical accommodating portion, a stop member, a rotation seat and a USB slot which is connected with a circuit board, wherein the USB slot is arranged in the rotation seat; the rotation seat is accommodated in the cylindrical accommodating portion of the front cover and the stop member can be fixedly locked on the cylindrical accommodating portion of the front cover, so that the circuit board with which the USB slot is connected can penetrate through a penetrating opening. Therefore, when a USB line is inserted into the USB slot and the USB slot is rotated, a switch on the circuit board is contacted with a lug in the penetrating opening, and thus the USB slot can be triggered and turned on to perform a power-supplying performance.

The invention discloses formaldehyde-free plant adhesive and its manufacturing process. The manufacturing process is characterized by comprising the following steps: S1, material preparation: taking fresh bamboo, washing and airing, rolling the bamboo by a thread rolling machine to obtain 0.1-0.2 mm bamboo fiber so as to obtain a first prefabricated material; S2, cooking: cooking the first prefabricated material in a cooking tank at the cooking temperature of 160-200 DEG C for 10-30 min so as to obtain a second prefabricated material; S3, squeezing: squeezing the second prefabricated material obtained in the step S2 by a squeezer for 5-10 min to squeeze out a juice so as to obtain a third prefabricated material; S4, distillation: sending the third prefabricated material obtained in the step S3 into distillation equipment to dry moisture, drying by distillation and purifying the material to 90% so as to obtain a fourth prefabricated material; and S5, modulation of pH value, viscosity and dilutability: regulating pH value of the fourth prefabricated material obtained in the step S4 to 8-9%, adjusting viscosity of the material to 19-21 Pa / s, and thermocuring the material for 50-70s so as to obtain a finished product, namely the formaldehyde-free plant adhesive. By using bamboo fiber as a raw material, the formaldehyde-free plant adhesive is pollution-free and environmentally friendly.

The invention discloses a wear-resistant matt touch adhesive film. The film is composed of a wear-resistant touch oil layer, a BOPP matt base film layer and an aqueous pressure-sensitive adhesive layer from top to bottom, and the wetting index of the upper surface of the wear-resistant touch oil layer is less than or equal to 36 dynes. The film utilizes the characteristic of being capable of direct winding and unwinding of the wear-resistant touch oil layer with the wetting index less than or equal to 36 dyne and a water-based pressure-sensitive adhesive layer, does not need to use a release paper or a release film, and has the advantages of a good touch effect, moderate initial adhesion and lasting adhesion, no adhesive residue and environmental protection. The invention also discloses the preparation method of the wear-resistant matt touch adhesive film, the method has strong controllability in operation, and is favorable for large-scale industrial production, and the prepared wear-resistant matt touch adhesive film can directly carry out label coating.