48results about How to "Effective isolation of contacts" patented technology

The invention relates to the technical field of film material preparation, in particular to a preparation method of a high-temperature resistant and antistatic release film. The invention uses modified epoxy resin as a matrix, self-made silver-loaded graphite powder and polyethylene terephthalate as accelerators, and supplemented with dimethyl silicone oil and ammonium persulfate to prepare a high-temperature-resistant and anti-static ionizer. Type film, first modify the epoxy resin, the bismaleimide resin and the cyanate resin are easy to form a triazine ring structure after heating, which enhances the high temperature resistance of the epoxy resin, because the silica sol contains Silicon, which can effectively isolate the contact between oxygen in the air and epoxy resin, thereby improving the high temperature resistance of the release film, and then use stannous chloride to sensitize the graphite powder, induce the reduction of silver ions to form silver simple substance, and adsorb on The surface of graphite powder improves the antistatic property of the release film, and the addition of polyethylene terephthalate further improves the antistatic property of the release film, which has a wide application prospect.

The invention discloses a core-shell isomerous lithium ion battery composite positive electrode material formed by layered lithium-rich manganese base and spinel type lithium manganate and a preparation method of the positive electrode material, and belongs to the field of a lithium ion battery electrode material. The lithium ion battery composite positive electrode material takes spinel type lithium manganate LiMn2O4 as an inner core and takes layered lithium-rich manganese base xLi2MnO3.(1-x)LiMO2 (x is greater than 0 and less than or equal to 1, M is MnaNibCo1-a-b, a is greater than 0 and b is less than 1) as a shell; according to the preparation method, the spinel type lithium manganate inner core is prepared firstly, and then the layered lithium-rich manganese base shell is prepared through a PVP auxiliary combustion method or a wet chemical method; the prepared lithium ion battery composite positive electrode material has high electrochemical cycle stability both at the room temperature and at a high temperature of 55 DEG C; and in addition, the method is simple in process and convenient to operate, and high in compatibility with preparation of lithium manganate by a high-temperature solid-phase method, and industrial production can be realized easily.

The invention provides a fish biological compound preservative and a preparation method thereof. The preservative is prepared from, by weight, 5-30 parts of Pulullan, 0.1-0.5 part of natamycin, 0.1-1 part of nisin, 0-10 parts of traditional Chinese medicine extracts and 0-20 parts of flavonoid compound. The traditional Chinese medicine extracts include one or more of honeysuckle extract, radix astragali extract, radix sanguisorbae extract, radix et rhizoma rhei extract and galla chinensis extract. Through the film forming performance of Pulullan, the synergetic antimicrobial effect of natamycin, nisin and traditional Chinese medicine extracts and the lipid oxidation resistance of flavonoid compound, preservative films are formed on surfaces of processed fish meat, and then the preservation and antisepsis effects are achieved.

The invention provides a composite negative plate. The composite negative plate comprises a metal foil simultaneously used as a negative current collector and a negative active material, a solid electrolyte thin film layer arranged on one surface of the metal foil, and a diamond-like film layer arranged on the surface, deviating from the metal foil, of the solid electrolyte thin film layer. The solid electrolyte layer has good lithium conduction performance, improves the interface ion diffusion rate of the composite metal negative electrode / electrolyte, and improves the rate capability of thebattery. The solid electrolyte layer can effectively isolate the contact between the surface of the composite metal and the electrolyte, so that the side reaction process is reduced, and the coulombicefficiency of the battery is improved; and the solid electrolyte layer can also provide an effective mechanical protection effect for the composite metal negative electrode, and the pulverization problem of the composite metal negative electrode caused by volume change in the electrochemical reaction process is improved, so that the cycle performance of the battery is effectively improved.

The invention discloses a tongue protector which comprises a tongue protecting part (2) and a fixing part (4), wherein one end of the tongue protecting part (2) is downwards bent; the other end of the tongue protecting part (2) is connected with one end of the fixing part (4); the other end of the fixing part (4) can be fixed to teeth. According to the tongue protector, the contact between the tongue lateral edge, the tongue tip and mouth floor tissues and the lateral edge of lower teeth can be effectively isolated, and the damage to the tongue during tooth preparation is avoided.

The invention discloses a feed packaging technology. The feed packaging technology includes the steps that to-be-packaged feed is transported to a feeding device, and a feed packaging bag is conveyedto the position below the feeding device; the feed is quantitatively loaded into the feed packaging bag; the packaged packaging bag is subjected to vacuum pumping; after vacuum pumping is completed, the packaging bag loaded with the feed is transported to a sealing mechanism to be subjected to electric heating sealing; the sealed packaging bag is conveyed to a cooling mechanism to be cooled; the outer surface of the packaging bag checked to be qualified is subjected to color printing of recognizable codes; and boxing is conducted on the feed packaging bag after color printing is completed. Bymeans of the feed packaging technology, the packaging bag is subjected to vacuum pumping and electric heating sealing, then cooling operation is conducted, the feed in the packaging bag can be effectively prevented from making contact with external air due to feed packaging, and therefore the nutritional value of the feed is maintained; and due to the fact that color printing of the recognizable codes is conducted on the outer surface of the packaging bag, a feed buyer can conduct tracing inquiring on relevant information of the feed.

The invention provides a battery negative electrode. The battery negative electrode comprises a metal base material, a cationic polymer layer combined on at least one surface of the metal base material, and a conductive layer combined on the surface, deviating from the metal base material, of the cationic polymer layer, wherein the surface of the conductive layer is negatively charged, and the conductive layer is combined with the cationic polymer layer through electrostatic interaction. The battery negative electrode can inhibit the volume expansion of the negative electrode metal base material, inhibit the pulverization of the negative electrode material and ensure the integrity of the negative electrode metal base material; meanwhile, the contact between the electrolyte and the negativeelectrode metal material can be effectively isolated, the negative electrode metal material is prevented from being eroded and reacted, and a more stable SEI film is favorably formed; the conductivelayer with conductivity is combined with the outermost layer, so that the conductivity can be further enhanced, and the cycling stability of the battery is improved.

The invention relates to the technical field of preparation of high polymer materials, in particular to a preparation method of a high-strength and anti-static fiber reinforced plastic material. The high-strength and anti-static fiber reinforced plastic material is prepared from modified epoxy resin as a matrix, glass fibers and modified wollastonite powder as reinforcing agents as well as phthalic anhydride, p-phenylenediamine and other components for assistance; cyanate ester resin and self-made silica sol are used for modifying bisphenol A epoxy resin, then silica sol is prepared with a tetraethoxysilane hydrolysis method, so that high-temperature resistance of the fiber reinforced plastic material is improved; besides, the self-made silica sol prepared from tetraethoxysilane and othersubstances has good electrical conductivity, static electricity on the surface of the fiber reinforced plastic material can be carried away, static removal effect is realized, and antistatic propertyof the fiber reinforced plastic material is improved; the glass fibers are added to the matrix continuously, the glass fibers are connected through staggered matrix molecular chains, accordingly, strength of the fiber reinforced plastic material is improved, and the fiber reinforced plastic material has broad application prospect.

The invention relates to a method for manufacturing a high steel grade sulfur-resistant drill pipe by laser cladding. In the method, in the condition of inert gas insulating air, nickel-base alloy anti-corrosion material is clad on the inner and outer pipe walls of an S135 steel grade drill pipe with conventional properties by laser, a nickel-base alloy anti-corrosion layer is clad on the non-thread area of a joint, threads are processed on the thread conical surface of the joint after a nickel-base alloy anti-corrosion layer is clad on the thread conical surface of the joint, and the end part of a pipe body is oppositely connected with the joint through friction welding; the output power of the laser is 3.5-4.5kW; laser beam spot size is not more than Phi 3mm; defocusing amount is 25-35mm; laser beam scanning line speed is 6.5-7.5mm / s; the inclined angle between the laser beam and the long axis direction of the pipe body is 40-50 degree; and the delivery rate of cladding wire material is 15-20g / s. The drilling pipe reaches the property of the S135 steel grade drilling pipe by the APE Spec standard. The cladding layer can effectively prevent a base body from contacting natural gasto improve the H2S-resistant stress corrosion cracking performance.

The invention discloses a testing device for spark voltage of electrolyte under non-critical state. The testing device is provided with a 1000V-T-V tester, a beaker, high-voltage electrolyte and an electrode foil. The middle part of the electrode foil is wrapped with a plurality of layers of insulation tapes, and the insulation tapes separate the electrode foil into a suspending area and a liquid precipitating area. The operation steps are as follows: 1) the suspending area of the electrode foil is connected with the 1000V-T-V tester, and an ammeter and a voltmeter are connected between the electrode foil and the 1000V-T-V tester in series; 2) a proper amount of high-voltage electrolyte is injected into the beaker according to the height of the liquid precipitating area of the electrode foil; 3) the electrode foil is placed and suspended in the electrolyte, and half of the insulation tape is immersed in the electrolyte; and 4) a power supply is switched on to input current of 5mA-10mA, and the voltage of the sparks of the electrolyte is tested. The safe surge voltage of the product at high temperature can be ensured by the variation of the sparks of the electrolyte at each temperature section, and the stability of the product at high temperature is ensured.

The invention belongs to the technical field of environment protection, and particularly relates to a printing ink sludge harmless recycling treatment process and system. The characteristic that printing ink sludge contains a lot of carbon black and organic matter is fully taken into consideration, a high-temperature pyrolytic process is adopted in an airtight environment to completely pyrolyze the printing ink sludge after being dried, and generated high-temperature pyrolysis gas contains a lot of inflammable gas; a dedusting device is adopted to remove dust in the high-temperature pyrolysisgas, a condensing device is adopted to obtain bio-oil from gaseous oil and vapor which can be condensed and liquiefied in the pyrolysis gas with the help of an oil-water separation device, and purified fuel gas is obtained after gas which cannot be condensed is purified through a fuel gas purifying device; both the bio-oil and the purified fuel gas are obtained from the printing ink sludge and canbe reutilized for harmless treatment of the same to provide most energy for the drying process, and the short part is supplied by the outside. The treatment process realizes harmless recycling of theprinting ink sludge; waste is used to treat waste, so that the treatment process is economical and environment-friendly.

A novel horizontal-type high-voltage insulator protection device belongs to the field of high-voltage circuit protection and is used for solving the problem of arc generation by a high-voltage line insulator and large power transmission loss due to rainwater. The protection device comprises an upper half protection mechanism, a conical protection cover, and multiple groups of rain shading assemblies, wherein the upper half protection mechanism is used for protecting an upper half part, the front end and the rear end of an insulator, the conical protection cover is arranged at the root of the rear end of the insulator, a wire of the insulator is arranged in the conical protection cover, and the multiple groups of rain shading assemblies are arranged at the lower half part of the insulator and are used for protecting the lower half part of the insulator. By the protection device, the insulator can be effectively prevented from being in contact with rainwater, two poles of the insulator are protected from being moistened by rain, a blue arc discharge phenomenon at the root of the high-voltage line insulator is avoided, a high-voltage line insulator is prevented from being broken down, and a device fault is prevented. The protection device has the advantages of simplicity in structure, time and labor saving and long service lifetime, and is simple and convenient to install, the insulation capability of an important suspension point of a high-voltage line is stronger, thus, the fault frequency of high-level voltage running circuit is effectively reduced, and the operation time under high strength is reduced.

The invention discloses a testing device for spark voltage of electrolyte under non-critical state. The testing device is provided with a 1000V-T-V tester, a beaker, high-voltage electrolyte and an electrode foil. The middle part of the electrode foil is wrapped with a plurality of layers of insulation tapes, and the insulation tapes separate the electrode foil into a suspending area and a liquidprecipitating area. The operation steps are as follows: 1) the suspending area of the electrode foil is connected with the 1000V-T-V tester, and an ammeter and a voltmeter are connected between the electrode foil and the 1000V-T-V tester in series; 2) a proper amount of high-voltage electrolyte is injected into the beaker according to the height of the liquid precipitating area of the electrode foil; 3) the electrode foil is placed and suspended in the electrolyte, and half of the insulation tape is immersed in the electrolyte; and 4) a power supply is switched on to input current of 5mA-10mA, and the voltage of the sparks of the electrolyte is tested. The safe surge voltage of the product at high temperature can be ensured by the variation of the sparks of the electrolyte at each temperature section, and the stability of the product at high temperature is ensured.

The invention belongs to the technical field of square nickel-hydrogen power batteries, and in particular relates to a method for improving the performance of a capacitive nickel-hydrogen battery. The positive pole piece of the capacitive nickel-metal hydride battery is made of a sulfonated diaphragm, and a ceramic diaphragm is stacked between the positive pole piece and the negative pole piece of the bag; the electrolyte is composed of an alkaline solution and an additive, and the additive is cesium hydroxide. The positive pole piece of the present invention is wrapped in a bag made of sulfonated diaphragm, and the powder falls in the bag to effectively isolate the contact of the positive and negative electrodes, so as to better maintain the electrochemical performance of the battery. The Ni-MH power battery adopts the bag-making double-layer diaphragm lamination method to reduce the requirements for the sulfonated diaphragm. The thickness of the sulfonated diaphragm is 0.12-0.15mm, and the performance requirements such as alkali absorption rate and tensile strength are also reduced. It is completely possible to use domestic diaphragms. , greatly reducing the cost. The method improves the electrochemical performance of the battery, reduces the production cost, has a wider range of battery temperature, and effectively improves the safety of the battery such as furnace heat and acupuncture.