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69results about How to "Degree of control" patented technology

Micro-capsule essence with two-layer capsule wall and preparation method and application thereof

The invention discloses a micro-capsule essence with two-layer capsule walls and a preparation method and an application thereof. The essence comprises inner oil essence, a first micro-capsule wall inthe middle and an outer capsule wall located on outermost layer. The micro-capsule essence with two-layer capsule wall of the invention has two-layer capsule wall structure , good mechanical strengthand flexibitity; in addition, when used in cloth the micro-capsule essence has the advantage of strong washing resistance, long fragrance holding time and easy storage. The preparation method of themicro-capsule essence with two-layer capsule walls adopts complex coacervation phase separation method to prepare the essence, the technological design is seasonable, the maneuverability is strong, micro-capsule essence with different fragrances can be designed according to different demands; in the preparation process, the mechanical strength of the micro-capsule essence can be effectively controlled so as to control the duration time and degree of the frangrance of the micro-capsule essence; in addition, the finished product of the micro-capsule essence with two-layer capsule walls preparedin the invention has high qualification rate and the micro-capsule essence with two-layer capsule can realize industrialized production.
Owner:澳华达香精(广州)有限公司

Device for preparing nanofibers by differential split-flow centrifugal spinning method

The invention discloses a device for preparing nanofibers by a differential split-flow centrifugal spinning method. The device mainly comprises a motor support, a high-speed motor, a coupling, a rotator, a continuous feed device, an infrared temperature sensor, a conveyer belt roller set, an electromagnetic heater, a roller bearing block, a rotator bearing, a spinning manifold, conveying cord fabric, a rolling device and a take-up device. The motor support is fixedly arranged on the bottom bin of the spinning manifold and is used for fixing the high-speed motor; the rotator is driven to rotate at a high speed by the high-speed motor through the coupling and the rotator bearing; the continuous feed device is fixedly arranged at the top end of the spinning manifold; a discharge hole of the continuous feed device is arranged at the upper end of the rotator in an eccentric way, and a small interval is kept between the discharge hole and the upper end of the rotator. By combining a fluid differential structure and a reinforced fluid reduced conical surface, the control on the reduced degrees and centrifugal forces of fluids with different viscosity is realized, and meanwhile, a simple and efficient solution is provided to batch nanofiber preparation of solution or melt by the continuous feed device, an indirect heating device and the continuous take-up device.
Owner:QINGDAO ZHONG KE HAO TAI NEW MATERIAL SCI & TECH +1

Device and method for preparing porous foam metal by metal melt inflation process

The invention discloses a device and a method for preparing porous foam metal by a metal melt inflation process. The device comprises a metal melt groove, a foaming chamber, a fluid hole, a release valve and a metal crystallizer. The middle of the metal crystallizer is provided with a high-frequency ultrasonic oscillator; and the high-frequency ultrasonic oscillator is connected with a high-frequency ultrasonic power source used for adjusting the oscillation frequency, amplitude and power of the high-frequency ultrasonic oscillator. The high-frequency ultrasonic oscillator is started, when the bubble-containing metal melt passes through the metal crystallizer, bubbles are subjected to ultrasonic oscillation for fragmentation under the action of the high-frequency ultrasonic oscillation, and a bubble is fragmented into several smaller bubbles; and the oscillation frequency and the amplitude of the high-frequency ultrasonic oscillator are adjusted, so that the fragmentation degree and the size of the bubbles meet the requirements. The bubbles formed by high-frequency ultrasonic oscillation have uniform size and distribution; and the device and the method have the advantages of simple process and low cost, and are suitable for large-scale production, promotion and application.
Owner:DALIAN MARITIME UNIVERSITY

Preparation method of hierarchically porous zeolite molecular sieve

The invention relates to the technical field of molecular sieve preparation, and discloses a preparation method of a hierarchically porous zeolite molecular sieve. The specific surface area of a hierarchically porous EU-1 molecular sieve is improved. The method comprises the steps that a template agent part of EU-1 molecular sieve original powder is firstly removed through temperature controlling,then the processed EU-1 molecular sieve is placed in an acid solution to be reacted for 12-48 hours at the temperature of 100-150 DEG C, and finally the EU-1 molecular sieve is placed in an alkali solution where CTAB is dissolved to be reacted for 2-48 hours at the temperature of 80-180 DEG C to obtain the hierarchically porous EU-1 molecular sieve after sintering is conducted. The method has theadvantages that the hierarchically porous molecular sieve is prepared by the joint processing of desilicification and CTAB auxiliary secondary crystallization bonding through sintering temperature controlling and acid treatment, the method is simple, the outer specific surface area of the formed hierarchically porous EU-1 molecular sieve is increased, the dispersing performance of the molecular sieve is improved, and the catalytic activity is further improved.
Owner:TAIYUAN UNIV OF TECH

Preparation method of microcapsule

The invention discloses a preparation method of a microcapsule, which comprises the steps of: uniformly mixing silicon dioxide particles, monomer provided with ethylene and silane coupling agent with double bonds, stirring and reacting for 1 to 24 hours under a closed state at the temperature between 40 and 70 DEG C, then adding an oil-soluble cross linker and an oil-soluble initiator, stirring uniformly and then adding a dispersant and de-ionized water to prepare a suspension system, polymerizing for 2 to 6 hours in a nitrogen atmosphere at the temperature between 60 and 80 DEG C with rotating speed of 50-300 rpm, then raising the temperature to 95 DEG C and curing for 1 hour, then carrying out cooling and acid cleaning to obtain composite particles, adding hydrofluoric acid, dipping to remove the silicon dioxide inside the composite particles, then preparing the microcapsule with multi-cavities through neutralizing, washing and drying. The preparation method is easy to obtain materials, has simple technique, has good controllability on the morphostructure of the microcapsule, does not relate to organic solvents and is suitable for industrial production. Moreover, the prepared microcapsule has the advantages of high structure strength, multi-empty cavities and good controllability on the slow-release effect.
Owner:ZHEJIANG SCI-TECH UNIV

An inferior diesel oil hydro-upgrading and hydrofining combined process

The invention discloses an inferior diesel oil hydro-upgrading and hydrofining combined process. A diesel oil raw material is firstly fractionated into a light fraction and a heavy fraction; the lightfraction is subjected to aromatic hydrocarbon extraction to obtain a light aromatic hydrocarbon fraction and a light non-aromatic hydrocarbon fraction; the heavy fraction enters a hydrofining reactor, and the material passing through a first hydrofining catalyst bed layer is divided into two streams; one material stream is extracted out of the hydrofining reactor and mixed with the light aromaticfraction, and the mixture enters a hydrofinishing reactor for hydrofinishing reaction; the other material stream is mixed with the light non-aromatic fraction and then flows downwards through a hydrofining catalyst bed layer at the lower part; the hydrofined material flow enters a hydro-upgrading reactor; and an obtained hydro-upgrading reaction material and an obtained hydrofinishing reaction material are respectively subjected to gas-liquid separation and fractionation to obtain high-quality diesel oil products and a high-quality FCC feed material. The invention provides the hydrogenation combined process for simultaneously producing more than two kinds of diesel fractions with different purposes on one set of hydrogenation process equipment for the first time.
Owner:CHINA PETROLEUM & CHEM CORP +1

Chinese herbal medicine fermentation fertilizer capable of preventing cucumber wilt disease, and preparation method thereof

The invention relates to a Chinese herbal medicine fermentation fertilizer capable of preventing cucumber wilt disease, and a preparation method thereof. The Chinese herbal medicine fermentation fertilizer comprises the following raw materials: seaweed, enteromorpha, mikania micrantha, liquorice, black false hellebore, radix sophorae flavescentis, celeries, molasses, silica sol, an EM microbial agent and a soil modifier. The preparation method comprises the following steps: mixing and grinding the Chinese herbal medicine raw material, adding the molasses, the EM microbial agent and a proper amount of water, and conducting anaerobic fermentation at normal temperature; evenly mixing the fermentation product with the soil modifier and preparing particles; adding the mixed particles into a fluidized bed coating machine, spraying silica gel at 50-55DEG C for coating, cooling and sieving to obtain the Chinese herbal medicine fermentation fertilizer. By compounding the fermented Chinese herbal medicine with the soil modifier, and then coating to form a sustained-release fertilizer, the fertilizer not only has the functions of being synergistic, promoting plant to absorb nutrients and playing sustained-release action, but also can effectively inhibit the proliferation of cucumber wilt disease pathogenic bacteria, control the disease scale and degree, thus realizing the restoration and improvement of soil ecological environment, and avoiding environment pollution.
Owner:FOSHAN SANSHUI JIAXIN AGRI TECH RES INST GENERAL PARTNERSHIP

Animal experiment device used for generating knee joint wear

The invention discloses an animal experiment device used for generating knee joint wear. The animal experiment device comprises a base body, the left part of the base body is provided with a high position base table, the high position base table is used for fixing a knee joint and an upper part arm of the knee joint of an experiment animal, the right part of the base body is provided with a low position base table, the low position base table is provided with a leg oscillation mechanism used for extruding and oscillating a shank of the experiment animal and an acting force adjustment mechanism used for automatically adjusting the amount of the stress of the knee joint, and the leg oscillation mechanism is fixedly installed on the action force adjustment mechanism. According to the animal experiment device used for generating the knee joint wear, animal knee joint motion wear inflammation needed by experiment personnel can be formed in a short time, the energy cost by the experiment personnel is relieved, the degree of the knee joint wear and the grade of the formed inflammation of the experiment animal can also be accurately controlled in the whole experiment forming process, and subsequent experiment operation is better benefited.
Owner:FUJIAN UNIV OF TRADITIONAL CHINESE MEDICINE
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