54results about How to "Low-temperature performance" patented technology

A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode contains active material particles and a coating material. The active material particles are represented by any one of the following formulae (1) to (3) and have an average particle diameter of 0.1 to 10 μm. The coating material comprises at least particles having an average particle diameter of 60 nm or less or layers having an average thickness of 60 nm or less. The particles or the layers contain at least one element selected from the group consisting of Mg, Ti, Zr, Ba, B and C.

Li_xM1_yO₂  (1)

Li_zM2_2wO₄  (2)

Li_sM3_tPO₄  (3)

In a toner having toner particles which comprise toner base particles containing at least a colorant, a release agent and a polar resin, and an inorganic fine powder, the polar resin is a resin having at least a polyester unit, synthesized in the presence of an aromatic carboxylic acid titanium compound used as a catalyst, and has an acid value of from 3 mgKOH/g to 35 mgKOH/g. The toner base particles are obtained by carrying out granulation in an aqueous medium, and the toner has a weight-average particle diameter of from 4.0 μm to 10.0 μm.

In a toner having toner particles containing at least a colorant, a release agent and a polar resin, and an inorganic fine powder, the polar resin contains a polyester resin obtained by carrying out polymerization in the presence of a titanium chelate compound as a catalyst, and has an acid value in a specific range. The toner particles are granulated in an aqueous medium and have a weight-average particle diameter in a specific range.

The invention discloses a constant temperature measurement-type micro humidity sensor and a producing method thereof, relating to the sensor technology; the sensor consists of a humidity sensitive film capacitor and a pedestal, wherein at least one electrode in the lower electrode of the humidity sensitive film capacitor acts as a capacitance or impedance measuring electrode and a constant temperature-control heating electrode and works with a temperature sensor in the lower electrode under the control of an external circuit of the sensor to cause the micro humidity sensor to measure humidityat certain constant temperature. A thin supporting film for supporting the humidity sensitive film capacitor in the sensor has through holes or clearance structures, thereby reducing heat loss and causing the sensor to realize constant temperature measurement under relatively low power consumption. The micro humidity sensor is not affected by the environmental temperature, has small temperature coefficient and good low-temperature performance, realizes the humidity measurement at negative temperatures and has a volume smaller than 2mm*2mm*2mm. The invention is applied to daily life, industrial production, weather forecast, environment monitoring, aeronautics, astronautics and other fields.

A lithium-sulfur battery includes a positive electrode having at least one positive active material selected from the group consisting of an elemental sulfur, Li₂S_n (n≧1), Li₂S_n (n≧1) dissolved in catholytes, an organosulfur compound, and a carbon-sulfur polymer ((C₂S_x)_n: x=2.5˜50, n≧2), an electrolyte having salts of an organic cation, and a negative electrode having a negative active material selected from the group consisting of a material capable of reversibly intercalating/deintercalating lithium ions, a material capable of reversibly forming a lithium-containing compound by a reaction with lithium ions, a lithium metal, and a lithium alloy.

The invention provides a diesel vehicle urea solution with low-temperature properties and a preparation method thereof. The diesel vehicle urea solution with the low-temperature properties is composed of components of A, B, C and D, wherein the component A is high-purity water, the component B is urea, the component C is micromolecular liquid hydramines and the component D is micromolecular liquid alcohols. By weight part, the diesel vehicle urea solution with the low-temperature properties is composed of 40-70 parts of the component A, 20-25 parts of the component B, 5-25 parts of the component C and 5-40 parts of the component D. The diesel vehicle urea solution with the low-temperature properties obtains a freezing point lower than -18 DEG C--35 DEG C and a surface tension level lower than that of ordinary vehicle urea, thereby being applicable to all seasons in southern and northern regions, particularly to cold seasons in Northeast China.

A coating for a mechanical part comprises a first layer of hydrogenated amorphous silicon carbide designed to be in contact with the mechanical part, a stack of layers and an external layer of hydrogenated amorphous carbon. The stack is formed by an alternation of layers respectively of hydrogenated amorphous carbon and of hydrogenated amorphous silicon carbide. The coating has a total thickness preferably comprised between 10 and 20 micrometers.

A fire-resistant wire cable and a manufacturing method therefor. The fire-resistant wire cable comprises an outer sheath (1) and at least one cable inner core (2) covered inside the outer sheath (1). Each cable inner core (2) comprises a conductor (21) and an insulating layer (22) covering the outside of the conductor (21). The outer sheath (1) is made of material containing ceramifying silicone rubber. An outer sheath protective layer is formed outside the conductor using material containing ceramifying silicone rubber so that when a large fire occurs, a hard protective layer is formed on the outer surface of the cable inner core, thereby protecting a line so as not to break or short-circuit. The hard ceramic-like shell thus formed does not crack under 900oC x 90 minutes of flame ablation, thereby extending the usage time of a cable in a fire. The present fire-resistant wire cable is resistant to high and low temperatures, is anticorrosive and flame retardant, and has excellent electrical insulation properties. The present fire-resistant wire cable has a wide range of uses, and is better suited to locations in harsh environments.

The invention discloses lithium-ion battery electrolyte. The electrolyte comprises LiPF6, a non-aqueous organic solvent and additives, wherein the additives comprise fluoroalkenyl phosphate compounds and LiBOB, the structural general formula of the fluoroalkenyl phosphate compounds is the general formula I or the general formula II shown in the specification; according to the general formula, when R1 represents alkyl with 1-5 carbon atoms, R2 represents fluoroalkenyl, and when R1 represents fluoroalkyl, R2 represents any one of alkenyl with 2-5 carbon atoms and fluoroalkenyl with 2-5 carbon atoms. The flammability of the lithium-ion battery electrolyte is low, the gas production capacity of the lithium-ion battery prepared from the electrolyte is small in the charging and discharging processes, and the battery can be effectively prevented from expanding and has excellent high-temperature cycle performance.

The invention belongs to the technical field of water-based power batteries, and particularly relates to a capacitive nickel-hydrogen power battery and a preparation method thereof. An electric core is formed by alternately stacking positive pole pieces, negative pole pieces and gel diaphragms and then being performed with shell installation, welding, top cover sealing, liquid injection and pulsepressure; the negative pole piece is prepared by following the steps of: dissolving lignin powder in alkali liquor at high speed, adding water-soluble polymer into alkali liquor, vacuum stirring to form solution, adding hydrogen storage alloy into solution, stirring uniformly, vacuum defoaming to obtain slurry, freeze drying to obtain precursor, performing vacuum carbonization on the precursor toprepare the negative pole piece; the alkali liquor is an aqueous solution of zinc oxide and sodium hydroxide. The method realizes the large-scale production of the positive pole sheet, negative pole sheet and gel diaphragm. The power battery has the advantages of low temperature performance and long service life. The times of charging and discharging of 1C in the SOC range of 20-80% is more than 20,000, which completely meets the requirements of electric automobiles, starting power supplies and the like; the invention also provides a preparation method thereof, which is safe in operation and green and environment-friendly.

The present invention relates to selectively isolating gases using a natrolite-based zeolite, and more particularly, to a novel natrolite-based zeolite and to selectively isolating hydrogen and/or helium gas using a natrolite-based zeolite. The present invention is characterized in that gas containing hydrogen is brought into contact with a natrolite-based zeolite to selectively isolate the hydrogen. The present invention provides a sorbent which can selectively isolate hydrogen and/or helium, and provides a method for isolating the hydrogen and/or helium at room temperature or at a high temperature.

To provide a magnetic toner which has superior low-temperature fixing performance and pressure roller anti-staining properties even in various forms of use, has been kept from image defects such as image non-uniformity even during long-time image reproduction and can achieve high-level image quality. In a magnetic toner having toner particles containing at least a binder resin and a magnetic material, the activation energy Ea (kJ/mol) that is determined from a shift factor aT₁₂₀ in a master curve of the toner, prepared when 120° C. is set as reference temperature, and the activation energy Eb (kJ/mol) that is determined from a shift factor aT₁₅₀ in a master curve of the toner, prepared when 150° C. is set as reference temperature, satisfy Expression (1), and the Ea is 110 kJ/mol or less:

1.00≦Ea/Eb<1.20  (1).

The invention discloses a direct-injection bio-based asphalt mixture warm-mixing agent which comprises the following components by weight percentage: 60-90% of polyolefin, 0-20% of a bio-based filler,0-30% of petroleum resin, 0-6% of a lubricant and 0.2-0.6% of an antioxidant. When being used, the warm-mixing agent is mixed with matrix asphalt and stone; the polyolefin used in the invention has the advantages of low melting point and easy dispersion; the bio-based filler has the effects of reinforcing, filling and reducing the cost, and can improve the strength and compactness of the asphaltmixture; in addition, the bio-based filler is derived from a black liquor extract of papermaking, which has positive significance for environmental sewage treatment; the petroleum resin improves the bonding strength of asphalt; the antioxidant improves the heat resistance and aging resistance; and the lubricant optimizes the low-temperature performance, dispersibility and processability. The warm-mixing agent has the advantages of good comprehensive performance such as resistance to water damage, rutting resistance and low-temperature performance, and can be popularized and applied to the paving technology of asphalt pavement.