65results about How to "Increase conductance" patented technology

The invention discloses polyolefin based nonlinear dielectric materials, and relates to nonlinear dielectric materials. The polyolefin nonlinear dielectric materials solve the problems of poor physical-mechanical property and processability caused by single variety of functional filler and large mixing amount of the prior polyolefin based nonlinear dielectric material. TheA first polyolefin based nonlinear dielectric material is prepared from polyolefin base materials, functional compositions and an antioxidant; and thea second polyolefin based nonlinear dielectric material is prepared from low density polyethylene, the functional compositions, the antioxidant and a crosslinking agent. The polyolefin based nonlinear dielectric materials have good electrical conductivity and/or dielectric constant nonlinear characteristic, physical-mechanical property and processability and strong capacity of automatically homogenizing electric field distribution in a non-uniform electric field.

The embodiments of the present invention generally relate to a method and an apparatus to confine a plasma within a processing region in a plasma processing chamber. The apparatus may include an annular ring with a gap distance with the chamber wall at between about 0.8 inch to about 1.5 inch. In addition to the annular plasma confinement ring, the plasma can also be confined by reducing a voltage supplied to the top electrode by a voltage ratio during plasma processing and supplying the remaining voltage supplied to the top electrode at a negative phase at the substrate support and the substrate, if the substrate is present during processing. The voltage ratio can be adjusted by changing the impedances of the substrate support and the dielectric seal surrounding the top electrode. Lowering top electrode voltage by a voltage ratio and supplying the remaining voltage supplied to the top electrode at a negative phase at the substrate support reduce the amount of plasma got attracted to the grounded chamber walls and thus improves plasma confinement. This method of plasma confinement is called impedance confinement. Plasma confinement can be improved by using either the described annular ring, the impedance confinement scheme or a combination of both.

The invention discloses a high-activity seaweed fertilizer specially used for peanuts and a preparation method thereof and belongs to the technical field of production of crop specially-used fertilizers. The high-activity seaweed fertilizer is prepared from following raw materials comprising: urea, monoammonium phosphate, a calcium magnesium phosphate fertilizer, potassium sulfate, borax, EDTA chelating iron, EDTA chelating manganese, EDTA chelating zinc, ammonium heptamolybdate, a seaweed extraction liquid and seaweed residues. Compared with a fertilizer in the prior art, the high-activity seaweed fertilizer specially used for the peanuts is reasonable in formula, is complete in nutrition, can achieve an effect of increasing yield of the peanuts and improving quality of the peanuts.

A shielding film for an apparatus with a device for wireless charging is provided which comprises several stacked layers. The layers each have several strips of a nanocrystalline soft magnetic alloy arranged on an adhesive layer, the nanocrystalline soft magnetic alloy having a round hysteresis loop. The strips of adjacent layers are offset with respect to one another.

An NCM positive active material composition and a secondary battery including the same are disclosed. The NCM positive active material composition has a good conductivity and increased capacity, and is prepared by utilizing a high density mixture. The NCM positive active material composition includes an NCM positive active material, a conductive agent, and a binder, and the conductive agent contains graphite.

The invention relates to graphene composite carbon-coated cobalt-lithium phosphate material and preparation methods and application thereof and relates to lithium-ion battery anode materials. The graphene composite carbon-coated cobalt-lithium phosphate material comprises cobalt-lithium phosphate, graphene and carbon which are composited through in-situ symbiosis, and the graphene and the carbon generated in situ form a three-dimensional conductive network. The first preparation method includes: dissolving a lithium source, a cobalt source, a phosphorus source and an organic carbon source into water to obtain solution A; dispersing graphene in anhydrous ethanol to obtain solution B; mixing the solution A and the solution B, spray drying to obtain precursor powder, calcining under protective atmosphere, and cooling to room temperature to obtain the graphene composite carbon-coated cobalt-lithium phosphate material. The second preparation method includes: dissolving a lithium source, a cobalt source and a phosphorus source into water, and spray drying to obtain cobalt-lithium phosphate precursor; mixing the cobalt-lithium phosphate precursor with graphene and an organic carbon source, calcining under protective atmosphere, and cooling to room temperature to obtain the graphene composite carbon-coated cobalt-lithium phosphate material. The graphene composite carbon-coated cobalt-lithium phosphate material can be used as the anode material to apply to lithium-ion batteries.

The invention discloses a storage battery anode lead plaster capable of enhancing SAE standard high temperature service life and a preparation method, aiming at solving the problem of high temperature service life of lead-acid storage batteries. The technical scheme is that the lead plaster raw materials are prepared by the following substances in parts by weight: 100 of lead powder, 0.05-0.1 of fiber, 0.1-1.0 of superfine barium sulfate, 0.05-0.2 of carbon black, and 0.1-0.4 of magnesium sulfate. The invention selects superfine barium sulfate as anode additive, thus delaying contraction and rigidification of anode plate under high temperature and prolonging service life of the storage battery; magnesium sulfate and carbon black improve the porosity of the anode active substance, facilitates dispersion of sulfuric acid and is beneficial for starting performance of the storage battery. Proved by test data, main technical performance index can perfectly achieve and surpass the standard requirement, and satisfy the requirement of the automobile on the high temperature service life of the storage battery.

The invention provides a compact type liquid-helium-free 1K low-temperature refrigeration device suitable for ultrahigh vacuum environment. The device comprises a gas conveying pipe, a pre-cooling end, a protection cover, a pressure reduction pool and an air exhaust device. The device has the beneficial effects that firstly, the protection cover reduces the surface area of a refrigeration machine exposed in a vacuum cavity and can be used for the ultrahigh vacuum environment; secondly, the protection cover serves as a backflow channel of refrigeration working media, conductance of the backflow channel is improved, it is ensured that liquid refrigeration working media in the pressure reduction pool have the low vapour pressure, and the lower refrigeration temperature is achieved; thirdly, at the initial cooling stage, the backflow channel can be inflated with helium exchange gas so as to rapidly cool the portion of the pressure reduction pool, and the cooling time is shortened; fourthly, due to design of the second segment of the protection cover, the whole heat exchange efficiency is improved; fifthly, the refrigeration device has the beneficial effects of being compact in structure, easy to demount, mount and maintain, adjustable in refrigeration amount and the like.

The invention relates to a method for increasing the photosynthetic capacity of drought mixed matrix lawn plants by adopting rare-earth cerium. The method comprises the step of sowing seeds of the lawn plants on a mixed culture matrix for lawn planting, wherein 200mg/Kg-800mg/Kg of rare-earth cerium is contained in 1.5-2kg of mixed culture matrix soil and the mixed culture matrix is the compost of soil and municipal solid waste in a weight part ratio of 4:(1-2). According to the method provided by the invention, a certain amount of rare-earth cerium is applied, so that the photosynthetic rate of the lawn plants can be obviously increased. The application of the technology is expected to realize a high-efficiency and low-cost operating mode in large-area urban lawn planting.

The present disclosure generally relates to process chambers having modular design to provide variable process volume and improved flow conductance and uniformity. The modular design according to the present disclosure achieves improved process uniformity and symmetry with simplified chamber structure. The modular design further affords flexibility of performing various processes or processing substrates of various sizes by replacing one or more modules in a modular process chamber according to the present disclosure.

Moistening fluids are disclosed that are capable of being used in mail processing machines and systems. Mail processing equipment can automatically feed and moisten envelopes at slow to very high speeds of 30 inches per second. The moistening system becomes contaminated with paper dust, talc, and common envelope adhesives. The moistening fluids kill many types of bacteria, fungi, and inhibit the growth of other types of bacteria, fungi, and algae. The moistening fluids of this invention are safe for use in an office environment, i.e., they are non-toxic, not tacky, have a pleasant odor, are non-flammable, have no residue build up and may be transported by common carriers without any safety precautions. The moistening fluid contains: detergent, biocide, alcohol, dye, de-ionized water and a fragrance.

The invention provides a method for processing the surface of a CuCr contact material for a vacuum arc-extinguishing chamber. The contact material is subjected to machine processing, washing and drying, the material surface is scanned by adopting a high-energy electron beam to obtain an electron beam remelting layer with thickness being about 100 mu m, and the size of the Cr particles in the remelting layer is less than 1mu m. The electron beam scanning process is performed in a vacuum environment, the vacuum degree is less than 0.1Pa, the electron beam scanning frequency is 350-450HZ, the voltage is 55-65KV, and the current is 60-70mA. After the electron beam scanning, the crystalline grains on the surface of the contact material are remarkably refined, so that the physical mechanical performance and electric performance of the contact material can be improved to a great extent.

The invention discloses wide-measuring-range adjustable movable vacuum mass spectrum measuring equipment which comprises a differential vacuum chamber, an air pumping set, a differential vacuum gauge,an air inlet vacuum gauge, a four-stage rod mass spectrometer, a first sluice damper, a second sluice damper, a micro-adjustable valve, an angle valve and a vacuum pipe. The bottom of the differential vacuum chamber is connected with the air pumping set through the first sluice damper. The side surface of the differential vacuum chamber is provided with two interface flanges, wherein one interface flange is connected with the differential vacuum gauge and the four-stage rod mass spectrometer through a tee joint. The wide-measuring-range adjustable movable vacuum mass spectrum measuring equipment has beneficial effects of a, wide measuring range; b, high movability; c, automatic sampling rate adjustment; and d, gas component analysis diversity. The equipment can effectively analyze the residual gas component in vacuum for facilitating analysis for the main source of the gas component, thereby taking targeted measures for increasing the vacuum degree. The equipment has high social benefit and is suitable for popularization.

The invention relates to a method for increasing the water use efficiency of drought mixed matrix lawn plants by adopting rare-earth cerium. The method comprises the step of sowing seeds of the lawn plants on a mixed culture matrix for lawn planting, wherein 200mg/Kg-800mg/Kg of rare-earth cerium is contained in 1.5-2kg of mixed culture matrix soil and the mixed culture matrix soil is the compost of soil and municipal solid waste in a weight part ratio of 4:(1-2). According to the method provided by the invention, a certain amount of rare-earth cerium is applied, so that the water use efficiency of the lawn plants can be obviously increased. The application of the technology is expected to realize a high-efficiency and low-cost operating mode in large-area urban lawn planting.

The invention belongs to the technical field of sodium-ion batteries, and particularly relates to an iron-based phosphate sodium-ion battery positive electrode material and a preparation method thereof. The preparation method comprises the following steps: preparing a polyaniline coated iron phosphate composite material; the preparation method comprises the following steps: by taking polyaniline-coated iron phosphate as a precursor, adding sodium salt and phosphate to prepare an iron-based phosphate sodium-ion battery positive electrode material; the preparation method of the polyaniline-coated iron phosphate precursor comprises the following steps: adding a trivalent iron salt into a solution containing phosphate and aniline to generate nano-sized iron phosphate active substance particles, and promoting polymerization of aniline on the surface of iron phosphate to obtain polyaniline-coated nano iron phosphate. The material has excellent electronic and ionic conductance and excellent electrochemical performance. The polyaniline shell of the ferric phosphate precursor can be carbonized into a conductive carbon layer in the high-temperature calcination process, on one hand, the electronic conductivity of the material is enhanced, and on the other hand, the increase of active material particles in the high-temperature process is inhibited, so that ion diffusion is enhanced.

The invention relates to a vacuum gate valve with a neutron shielding function. The vacuum gate valve comprises a driving mechanism, a valve shell and a valve plate, and is characterized in that the valve plate comprises an outer valve plate made of 0Cr18Ni9 stainless steel, a shielding plate made of lead boron polyethylene and an inner valve plate made of 0Cr18Ni9 stainless steel; an annular sealing groove is formed in the side, close to the valve shell, of the outer valve plate, and an ethylene propylene diene monomer vacuum sealing ring is embedded into the annular sealing groove and used for achieving vacuum sealing between the outer valve plate and the valve shell. According to the vacuum gate valve with the neutron shielding function, the problem that an existing conventional vacuumgate valve cannot shield neutron radiation is solved, the vacuum gate valve can be applied to the environment with neutron radiation, and the two functional requirements of vacuum sealing and neutronradiation shielding are met. The vacuum gate valve with the neutron shielding function has the advantages of being large in conductance, good in vacuum sealing performance, convenient to arrange a vacuum system, high in reliability and the like.