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52results about How to "Reduced mass production" patented technology

3mm-waveband small detector front-end

The invention relates to a 3mm-waveband small detector front-end which comprises the components of double 3mm small antennae, a transmitting branch circuit, a receiving branch circuit, a microstrip power divider and a local oscillator frequency doubling link, wherein the double 3mm small antennae comprise a transmitting antenna and a receiving antenna. The local oscillator frequency doubling link is used for supplying an adjustable-frequency local oscillator signal. The microstrip power divider divides the local oscillator signal to two paths. One path of the local oscillator signal is fed to the transmitting branch circuit for supplying an oscillating signal, and the other path is fed to the receiving branch circuit for supplying a local oscillator input. The transmitting branch circuit is used for performing frequency doubling and amplification on one-path signal which is output by the microstrip power divider, obtaining a 3mm-waveband RF signal and transmitting the 3mm-waveband RF signal to the transmitting antenna for transmitting. The receiving branch circuit is used for amplifying a 3mm-waveband echo signal which is received by the receiving antenna and performing secondary harmonic active frequency mixing with the local oscillator input signal for obtaining a middle-frequency output signal. The 3mm-waveband small detector front-end settles the following problems in an existing waveguide-structure 3mm waveband detector front-end: high cost, low integration level and large size.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

Production method of high-purity nanocrystalline silicon

The invention discloses a production method of high-purity nanocrystalline silicon, which comprises the following steps: 1) pretreating a waste silicon material and/or byproduct silicon powder to obtain 10-50 [mu]m silicon powder; (2) adding the silicon powder in the step (1) into dispersion liquid according to the proportion of 5-30wt% of solid content, then adding 1-10wt% of dispersing agent, and performing stirring in a dispersing tank to form silicon powder slurry; 3) pumping the silicon powder slurry formed in the step 2) into a sand mill for grinding to obtain nanocrystalline silicon slurry with the average particle size of 20-30 nm; and 4) conveying the nanocrystalline silicon slurry obtained in the step 3) to a spray drying system to obtain the nano-porous crystalline silicon particles. According to the invention, low-cost large-scale production is realized, the stability, purity and granularity of the nanocrystalline silicon are effectively controlled, the morphology of the produced nano-porous crystalline silicon particles is adjustable, the internal pores of the nano-porous crystalline silicon particles are nano communicating pores, the volume expansion of the silicon iseffectively relieved, and the electrical properties of the silicon negative electrode are also remarkably improved.
Owner:JIANGSU ZHONGNENG POLYSILICON TECH DEV +1

Continuous film-forming manufacturing device of wet-type colloidal film and film-forming method thereof

ActiveCN104972590AContinuous and rapid productionAchieve mass productionCoatingsLiquid layerEngineering
The invention relates to a continuous film-forming manufacturing device of a wet-type colloidal film and a film-forming method thereof. According to the invention, at least one cyclic-type conveyer belt is employed to form at least one bearing surface which moves cyclically along a preset conveying direction, wherein a lower fabric layer is supported on the surface of the bearing surface and can be moved in a synchronously conveying manner. In the front of or above the bearing surface, following parts are arranged successively: a first fixing liquid coating apparatus used for coating the lower fabric layer with a first fixing liquid layer, a colloid coating apparatus used for coating the first fixing liquid layer with a colloid layer so that a crosslinking and cure-shaping effect from bottom to top is carried out; and a second fixing liquid coating apparatus used for coating the colloid layer with a second fixing liquid layer so that a crosslinking and cure-shaping effect from top to bottom is carried out, thereby gradually forming a colloidal film in a proper thickness on the upper surface of the lower fabric layer during the process of synchronously conveying movement of the upper fabric layer, and further forming the continuous film-forming process of the wet-type colloidal film.
Owner:博鸿生物科技股份有限公司

Environment-friendly and degradable food-grade plastic packaging film

The invention discloses an environment-friendly and degradable food-grade plastic packaging film. The environment-friendly and degradable food-grade plastic packaging film is prepared from the following raw materials in parts by weight: 65 to 76 parts of modified linear low-density polyethylene particles, 25 to 35 parts of plant starch, 7 to 14 parts of sarcandra glabra fibers, 8 to 18 parts of filling master batch, 3 to 6 parts of a dispersant, 2 to 4 parts of a coupling agent, 2 to 6 parts of a compound plant antibacterial agent, 3 to 5 parts of an amphoteric surfactant, 5 to 7 parts of graphene oxide, 3 to 5 parts of xanthan gum, 1 to 3 parts of cellulose acetate, 2 to 4 parts of a light degradation agent, 1 to 3 parts of an ultraviolet absorbent, 2 to 4 parts of coconut oil, 1 to 3 parts of glycerol, 1 to 3 parts of prunus humilis bunge fibers, 1 to 3 parts of a waterproof agent and 2 to 4 parts of an antioxidant. According to the environment-friendly and degradable food-grade plastic packaging film, the plant starch and the sarcandra glabra fibers have abundant sources and a cheap price, and are environmentally friendly; the prepared plastic thin film has the advantages of high strength, low production cost, biodegradability, antistatic performance, oxidization resistance and ultraviolet resistance, and the problem of white pollution can be alleviated.
Owner:桐城市强峰包装有限公司

Preparation method of tea leaf water soluble dietary fibers

The invention relates to a preparation method of tea leaf water soluble dietary fibers. The preparation method comprises the following steps of A, crushing abandoned tea leaves as raw materials, screening the crushed tea leaves, mixing the screened tea leaves with water at the temperature being 60-85 DEG C according to the weight ratio of the screened tea leaves to the water being (1 to 10)-(1 to 30), maintaining the temperature, and performing leaching for 15-30min; B, performing filtration, taking tea leaf filter residues, mixing the tea leaf filter residues with an acid solution of which the hydrogen ion concentration is 0.5-2.0mol / L according to the volume ratio of the tea leaf filter residues to the acid solution being (1 to 20)-(1 to 40), and performing acidolysis at 60-85 DEG C for 1.0-2.5h; C, performing centrifugal filtration, and performing concentration so as to obtain concentrate; and D, mixing the concentrate with ethanol of which the volume concentration is 80%-95% according to the volume ratio of the concentrate to the ethanol being (1 to 3)-(1 to 5), performing standing for 12h or above, performing centrifugal separation, collecting precipitate, and performing freeze-drying so as to obtain the tea leaf water soluble dietary fibers. The preparation method disclosed by the invention is short in production cycle, simple and convenient to operate, not high enough in requirements for production conditions, and low in investment cost, 60% or above of capital investment can be saved, the extraction rate of the water soluble dietary fibers is 55% or above, the purity of the water soluble dietary fibers is 70% or above, and the preparation method is suitable for mass production.
Owner:XINYANG AGRI & FORESTRY UNIV

Drying disposable flexible electrocardio-electrode and preparation method thereof

The invention belongs to the technical field of medical equipment, and particularly relates to a drying disposable flexible electrocardio-electrode and a preparation method thereof. The electrocardio-electrode comprises a carbonized sponge layer, an electret gel layer, an isolation bottom layer and a conductive buckle; the electret gel layer surrounds the carbonized sponge layer and serves as a protection layer of the sponge layer; the isolation bottom layer is arranged between the carbonized sponge layer and the conductive buckle and used for isolation and protection; the carbonized sponge layer is connected with the conductive buckle through a metal wire. The preparation method comprises the steps of carbonized sponge preparation and electrocardio-electrode assembling. The flexible electrocardio-electrode is good in flexibility and elasticity and is more closely attached to the body surface skin, and the motion artifact resistant capacity is higher; the electrode-skin impedance is low, the electric conductivity is excellent, polarization is not likely to be generated, and interference and noise are resisted. In addition, the carbonized sponge generation cost is extremely low, andthe use cost can be greatly lowered. The electrocardio-electrode is easy to operate, short in manufacturing cycle and easy to produce in a large scale.
Owner:FUDAN UNIV
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