30results about How to "Improve key performance" patented technology

The present invention provides an improved fiber-reinforced article comprised of at least two plies. Each of the plies comprises (a) rubber and (b) cord made from melt-spinnable, non-metallic, multifilament fibers for which the cord has a twist multiplier of less than or equal to about 375, a stress at 1% strain greater than or equal to about 1.7 grams/denier, and an initial compressive modulus greater than or equal to about 7 grams/denier, and the at least two plies have a fiber orientation angle of greater than or equal to about 23°. The composite is useful as a tire belt in a passenger tire.

The invention relates to all-purpose lubricating oil for a motor and a gear case of a mini-tiller. The all-purpose lubricating oil comprises the following components by mass percent: 89.0-93.6% of base oil and a plurality of additives, wherein the kinematic viscosity of the base oil at 100 DEG C is 15-17mm<2>/s; the first additive is 1.0-2.0% of synthetic calcium sulfonate with high base number; the second additive is 2.0-3.0% of sulfurized calcium alkyl phenol with high base number; the third additive is 1.0-2.0% of polyisobutene bissuccinimide; the fourth additive is 1.0-2.0% of sulfurphosphorousbutyloctyl zinc salt; the fifth additive is 1.0-1.5% of amino monothioester; the sixth additive is 0.2-1.0% of terpolymer of ethylene, propylene and non-conjugated alkadiene, wherein the mooney viscosity (ML(1+4) 100 DEG C) of the sixth additive is 25-35; the seventh additive is 0.0001-0.0002% of polydimethylsiloxane. The invention also relates to a preparation method of the lubricating oil. The all-purpose lubricating oil can be used as the lubricating oil for a gasoline engine and a gear case of a mini-tiller, and also can be used as the lubricating oil for a diesel engine and the gear case of the mini-tiller.

The invention relates to a method and a tester for testing a dynamic adhesive retention force of rubber and a steel wire. The testing method comprises the following steps: applying a dynamic force to a vulcanized sample of the rubber and the steel wire by virtue of a wave-type mould, and then measuring a residual adhesive drawing force of the rubber and the steel wire so as to represent the magnitude of the adhesive retention force of the rubber and the steel wire under a dynamic condition. The tester comprises a mainframe, a drive system, a measurement control system and a safety protection device. The wave-type mould is used for applying the dynamic force to the vulcanized preparation sample of the rubber and the steel wire.

The invention discloses a calibration method of X-ray generator tube current. The method comprises the following steps of dividing an initial characteristic curve of pipe current-filament current into N sections, using a straight line to connect two end points of each section of the curve, and calculating an equation (Yn=knx+b) of each section of the straight line, wherein kn represents the slope of the nth section of the straight line, n=1,...,N, b is a constant, x is a pipe current value, and Yn is a voltage value of the filament current; collecting the pipe current value of the two end points of each section of the straight line and the corresponding voltage value of the filament current, comparing the collected data with data of the initial characteristic curve, wherein if an error is smaller than an error threshold value, then the equation of the section of the straight line is constant, and if the error is larger than the error threshold value, the collected data is utilized to renew the equation of the section of the straight line; using the equation of the straight line to calibrate the initial characteristic curve, selecting a corresponding equation of the straight line according to the pipe current value which needs to be utilized, and using the equation of the straight line to calculate the corresponding voltage value of the filament current. Through the calibration method of the X-ray generator tube current, calibration can be conducted on the pipe current of a ball pipe, and thus precise output of the pipe current is achieved.

The invention relates to a method for preparing tungsten-doped porous vanadium dioxide powder and a thin film by virtue of a cotton sacrifice template method. The method comprises the steps of firstlypreparing tungsten-doped porous vanadium dioxide powder from vanadium pentoxide, ammonium tungstate, oxalic acid and other materials through combination of hydrothermal reaction and the cotton sacrifice template method, preparing suspension liquid from the powder, and preparing the tungsten-doped porous vanadium dioxide thin film with excellent performance by virtue of a spin-coating method. Theprepared tungsten-doped porous vanadium dioxide powder has more small mesoporous structures and higher porosity, so that the visible light transmittance of the thin film can be effectively increased,and the sunlight modulation efficiency can be effectively improved; and by doping tungsten, the phase-transition temperature of the thin film can be effectively decreased.

Aiming at the problems of poor conductivity of a cellulose nano-paper and great reduction of strength in a high-humidity environment in the prior art, the invention provides the composite cellulose nano-paper. The composite cellulose nano-paper is prepared by the following method: firstly, preparing a cellulose nano-fibril wet film, namely a CNF layer from natural plant fibers containing lignin asa raw material, wherein the cellulose raw material is subjected to acid-based hydrolysis pretreatment, slowly pouring a graphene oxide dispersion liquid on the CNF layer wet film, and performing vacuum filtration to form a graphene oxide layer, namely a GO layer, drying to obtain a double-layer dry film of cellulose nanofibril composite graphene oxide, namely a CNF/GO dry film, carrying out reduction treatment on the CNF/rGO dry film in a water phase, and drying to obtain the CNF/rGO dry film-composite cellulose nano paper. The composite cellulose nano paper not only has excellent single-sided electrical conductivity, an electromagnetic shielding function and thermal conductivity anisotropy and but also is good in flexibility and high in strength. The preparation method is simple, green,environment-friendly and low in cost.

The invention relates to an injection device of an electric injection molding machine. The injection device of the electric injection molding machine comprises an injection table main body seat, a pre-plasticizing motor and a pre-plasticizing transmission cylinder, wherein the pre-plasticizing motor with a main shaft facing to the right is mounted on the upper part of the injection table main bodyseat, the pre-plasticizing transmission cylinder is rotatably mounted in the injection table main body seat, a pre-plasticizing driven wheel is mounted on the outer ring of the pre-plasticizing transmission cylinder, the main shaft of the pre-plasticizing motor is connected with the pre-plasticizing driven wheel through a transmission wheel belt, a transmission shaft driving ring is installed atthe right end of the pre-plasticizing transmission cylinder, a transmission shaft sleeve engaged with the transmission shaft driving ring is installed in the right portion of the pre-plasticizing transmission cylinder, a transmission shaft seat capable of being separated is installed at the left end of the transmission shaft sleeve, a transmission shaft front cover is installed at the left end ofthe transmission shaft seat, and the left end of the transmission shaft front cover is connected with a screw. The injection device of the electric injection molding machine has the characteristics ofbeing high in ejection acceleration, short in response time, small in overall size, capable of being applied to injection molding machines with different models conveniently and the like.

The invention discloses a mobile phone detection method based on wavelet feature vector extraction. The method comprises the steps as follows: a detection signal is acquired, a to-be-detected article passes through a detection door, the detection signal is sampled, the sampling frequency is 30 HZ, the signal lasts for about 2 s, and the signal is sent to a computer after A/D conversion; the acquired detection signal is subjected to DB3 wavelet decomposition through wavelet analysis, 8 signal components are obtained and reconstructed, and signal feature vectors of different frequency bands are obtained, and the signal feature vector of each frequency band is extracted; then the feature vectors are subjected to dimension reduction with a principal component analysis method, and the signal feature vectors are transmitted to an application; an analysis result is output by a well-trained BP network. Mobile phone detection magnetic array acquisition signals are processed by the aid of DB3 wavelets, the acquisition array SNR (signal to noise ratio) is increased, mobile phone detection magnetic array data are subjected to wavelet decomposition for extraction of feature vectors, mobile phones and non-mobile phones are recognized, and the mobile phone detection accuracy is greatly improved.

The invention belongs to the technical field of preparation of voltage dependent resistor materials and particularly relates to a preparation process for strontium titanate voltage sensitive ceramics. The preparation process comprises the following steps: improving burdening precision; pretreating raw materials by using a gamma radiant source; mixing the materials for two times, and controlling conditions for all the steps to obtain a product. Compared with the prior art, the preparation process disclosed by the invention has the following advantages that a 60Co gamma radiant source is used for radiating in the first-time material mixing process, so that part of raw materials can react in advance; the raw materials further react by raising the temperature, and further a strontium titanate crystalline phase with greater crystal grains is obtained; the sintering temperature is reduced under the condition of not adding lithium salts, a crystalline microstructure can be remarkably improved, and a crystal boundary is dense; main properties of the product are improved by an integrating effect of controlling all the conditions.

The invention discloses a gas input control system of a household electric appliance and an oxygen-making and nitrogen-making device. The gas input control system comprises the oxygen-making and nitrogen-making device, wherein the oxygen-making and nitrogen-making device is used for separating out oxygen and nitrogen after inhaling air and conveying either the oxygen or the nitrogen to a working space of the household electric appliance; the oxygen-making and nitrogen-making device comprises a filter used for filtering the air, an air compressor used for compressing the air, a condensation tube used for cooling compressed air, a flow dividing valve used for periodically sending out cooled air, an adsorption tower used for separating the nitrogen and the oxygen, an oxygen storage tank usedfor storing separated-out oxygen and a nitrogen storage tank used for storing separated-out nitrogen; the filter, the air compressor, the condensation tube, the flow dividing valve and the adsorptiontower are connected in sequence; the oxygen storage tank and the nitrogen storage tank are both connected with the adsorption tank. When the household electric appliance is used, the main performanceof the household electric appliance is further enhanced and thus, a better functional effect is achieved.

The invention relates to universal lubricating oil suitable for a mini-tiller and having good oxidation resistance. The universal lubricating oil comprises base oil and a plurality of additives, and specifically comprises the following components in parts by weight: 89.0-95.0 parts of base oil, 1.0-2.0 parts of high-alkali synthetic calcium sulfonate, 2.0-3.0 parts of an antirust agent, 1.0-2.0 parts of polyisobutene bi-butylene phthalein imine, 1.0-2.0 parts of zinc butyl octyl dithiophosphate, 1.0-1.5 parts of sodium citrate, 0.7-2.5 parts of a complex antioxidant, 3.5-6.5 parts of a compound detergent and 1.8-3.0 parts of an ashless dispersant. According to the lubricating oil, common use of lubricating oils for the whole mini-tiller and different mini-tillers is achieved; and in addition, the lubricating oil also has good abrasive resistance, anti-rust property and oxidation resistance, and meets the requirements of people on the anti-rust property.

The present invention provides a variable resistor with a switch, the click mechanism is constituted to provide a click member 53 and a plate spring 54 for click, a resistor unit is constituted to comprise a resistance board 57k and a first slider including a contact 58a1, a rotary switch is constituted to comprise a second insulating case 59 as a contact board and a second slider including a contact 58d1, when a rotating axis 52 is rotated, the contact 58d1 slides on the contact board 59k to change over the switch, a second extruded part 54d of the plate spring 54 for click is disengaged to the projected part 53b of the click member 53, and subsequently the first extruded part 54c of the plate spring 54 for click is disengaged to the engaged projected part 53a of the click member 53, thereby resulting in generation of different feelings of click.

The invention provides a harmonic current generating device. The invention further provides a method for controlling stepless linear output of the harmonic current, the harmonic current and control over linear dynamic stepless output of the harmonic current are simulated, energy consumption is low, and the energy-saving effect is good. The method comprises the steps that a load simulation unit isconnected with a power grid and used for simulating and restoring various power utilization load working conditions on site; a sampling unit is connected with the power grid and load simulation unit and is used for sampling the load simulation unit; a harmonic current stepless dynamic generation unit is connected with the sampling unit and the load simulation unit; a harmonic current stepless dynamic generation unit calculates to obtain load harmonic current according to the current sampling data obtained by the sampling unit, and outputs supplementary harmonic current to the load simulation unit according to a difference value between the load harmonic current and a target harmonic current value; and a main control unit is connected with the harmonic current stepless dynamic generation unit and is used for sending a target harmonic current value at the current moment to the harmonic current stepless dynamic generation unit in real time.