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643 results about "Surface moisture" patented technology

Thermoplastic polyurethane elastomer foam bead and preparation method thereof

The invention discloses a thermoplastic polyurethane elastomer foam bead and a preparation method thereof. The method comprises the following steps: firstly, adding thermoplastic polyurethane particles and water to a reaction kettle according to the mass ratio of 1 to (0.8-4); adding liquid carbon dioxide to the reaction kettle, and controlling the intensity of pressure and the temperature in the reaction kettle, so that the carbon dioxide in the reaction kettle is in a super-critical state; raising the temperature inside the reaction kettle to 90-140 DEG C; carrying out heat preservation; putting the materials in the kettle into a pressure tank, maintaining pressure, and cooling to below 70 DEG C; foaming the thermoplastic polyurethane elastomer particles once, and controlling the volume ratio of the reaction pressure to the pressure tank to be 1 to (15-30); putting the disposable foam particles into a storage tank, and carrying out secondary normal pressure foaming to obtain thermoplastic polyurethane elastomer foam beads; and removing the surface moisture of the foam beads, and curing the foam beads at normal pressure and normal temperature for over 48 hours, so as to obtain the product. The product disclosed by the invention has the characteristics of even and compact cells, small size, high percentage of closed area, high molding product strength, good rebound resilience and the like.
Owner:新辉新材料(常州)有限公司

Method for preparing immobilized enzyme by using spherical bacterial cellulose as carrier

The invention relates to a method for preparing immobilized enzyme by using spherical bacterial cellulose as a carrier. The method comprises the following steps of: inoculating activated slant strains into a seed culture medium for cultivation to obtain a liquid seed, shifting the liquid seed into a fermentation medium under a condition of 80 to 200 rpm at the temperature between 25 and 30 DEG C for 48 to 96 hours, and carrying out decantation to obtain bacterial cellulose balls; processing the bacterial cellulose balls in a water bath at the temperature between 80 and 90 DEG C for 30 to 120 min with 0.1 percent NaOH, rinsing the balls with deionized water, collecting the balls, neutralizing residual alkali liquor in the balls with 0.1 percent acetic acid, standing, rinsing the balls with the deionized water, taking the balls out, absorbing surface moisture, and freezing and drying the balls to obtain cellulose balls; and finally, preparing the immobilized enzyme by a physical adsorption method or an adsorption-crosslinking method. The spherical bacterial cellulose balls can effectively adsorb biological enzyme, maximally keep enzyme activity, and have safety and environmental protection. The method is simple and easy to operate and has strong controllability.
Owner:DONGHUA UNIV

Fresh-keeping method for low temperature birds meat products

The invention discloses a fresh-keeping method for low-temperature poultry meat products. The steps are firstly that the poultry meat products are stewed duck neck, duck row, duck wing, chicken wing, duck paw, and chicken feet; secondly, a bacteria-reducing treatment method: using ozone The sterilization method is to sterilize the air and the surface of the object; followed by the impregnation of the compound preservative: in the clean production workshop, the cooked products of the duck neck, duck breast, duck wings, chicken wings, duck feet, and chicken feet marinated in sauce are separated. Cut and organize, soak in the preservative solution, take it out and let it cool, air-dry, and then vacuum-pack; finally, microwave sterilization: put the vacuum-packed poultry products into a microwave sterilizer to sterilize, and put them in tap water after coming out of the oven. Cool to below 25°C, then dry the moisture on the surface of the packaging bag, pack it into a box, and put it into storage. The method of the invention is easy to operate and easy to operate, and has the characteristics of being able to maintain the original quality and flavor of low-temperature poultry meat products, having a long shelf life (over 120 days) at room temperature, saving cold chain investment, and the like.
Owner:WUHAN POLYTECHNIC UNIVERSITY +1

Polyamide polymerization production process and equipment for same

The invention relates to a polyamide polymerization production process and equipment for the same. The polyamide polymerization production process comprises the following steps of: carrying out prepolymerization on melted caprolactam, titanium dioxide, benzoic acid, and the like at a high temperature, and then carrying out front polymerization and post polymerization; pelleting; pre-extracting; extracting; pre-drying; and drying to obtain a product. The production equipment comprises a hexanolactam melting system, a preparation system, a feed system, a high-temperature prepolymerization device, a front polymerization tower, a rear polymerization tower, a pelleting system, a pre-extraction tower, an extraction tower, a pre-drying tower, a drying tower, and the like. According to the invention, static state flow guide spiral mixer assemblies are additionally arranged in the extraction tower and the lower sections of each row of tubes of the high-temperature prepolymerization device, the front polymerization tower and the post polymerization tower; the polyamide hydrolyzing ring opening and dewatering are more uniform and sufficient and faster; the front polyaddition reaction is sufficient and stable; the rear polycondensation stage is more uniform and stable in molecular distribution; the extraction tower more sufficiently and stably extracts a caprolactam monomer; the pre-drying tower can be used for removing the surface moisture of a slice; the drying tower dries combined water; a recovery system can be used for recovering an oligomer and extracts the caprolactam monomer contained in water.
Owner:武汉森大科技研究发展中心

Anisotropic nanometer press-in test table of biological soft tissues and method for performing nanometer press-in experiment by using anisotropic nanometer press-in test table

The invention discloses an anisotropic nanometer press-in test table of biological soft tissues and a method for performing a nanometer press-in experiment by using the anisotropic nanometer press-in test table. The anisotropic nanometer press-in test table of the biological soft tissues comprises a table body, wherein an accommodation hole which accommodates a test sample is formed in the middle of the upper part of the table body; two screwing cover bodies which spirally screw in the accommodation hole and cover the top of the accommodation hole are arranged on the upper part of the table body and pressed against the test sample; observation holes are formed in the screwing cover bodies; the observation holes in the screwing cover bodies respectively are circular and rectangular; and a humidity-preserving solution which preserves the humidity of the test sample can be dripped into the accommodation hole. By adoption of the anisotropic nanometer press-in test table of the biological soft tissues, the loss of the surface moisture of the test sample is avoided, the credibility of a detection experiment is improved, the error of the detection experiment is reduced, and the efficiency of the detection experiment is improved.
Owner:BEIJING UNIV OF TECH

Wall body evaporation and temperature reduction device utilizing solar energy and nontraditional water sources

The invention discloses a wall body evaporation and temperature reduction device utilizing solar energy and nontraditional water sources. A solar cell panel of the wall body evaporation and temperature reduction device is placed on a building roof and is connected with a controller through a conducing wire, the controller is connected with a storage battery, the storage battery is electrically connected with a water pump, the water pump is respectively connected with a water supply pipe and a water spraying pipe, the water supply pipe is connected with a water storage tank, the water pump is also connected with a calculator through signals, the water spraying pipe is arranged at the upper part of the outer side of the wall surface, an air temperature probe, an air humidity probe and a wall surface moisture content probe are respectively connected with the calculator, the air temperature probe and the air humidity probe are placed on the roof, and the wall surface moisture content probe is placed at the bottom of the wall body. The wall body evaporation and temperature reduction device has the advantages that the matching relationship among the solar energy, the ambient temperature and humidity of the wall body and the wall surface moisture content is skillfully utilized, through the intelligent control of the calculator, the effect that the water spraying and temperature reduction of the wall body is only carried out under the conditions of outdoor high temperature and high solar radiation is realized, and the building energy saving and water saving effects are obvious.
Owner:SOUTH CHINA UNIV OF TECH

Water-based chromium-free surface lubricating treating agent for galvanized steel sheets and application method of treating agent

The invention relates to a water-based chromium-free surface lubricating treating agent for galvanized steel sheets and an application method of the treating agent. The water-based chromium-free surface lubricating treating agent is mainly prepared from such chemical components as a water-based light-cured resin, a photoinitiator, a silica sol, a wax emulsion, a surfactant, a coupling agent, a molybdate and a coalescing agent. When the ultraviolet-cured water-based chromium-free lubricating treating agent prepared by use of the application method is used as a film-forming agent for the surface of the galvanized steel sheet, the obtained galvanized steel sheet has excellent lubricating property and good corrosion resistance, and also has good fingerprint resistance. As a result, the requirements on a galvanized metal material substrate can be greatly reduced because the film can be obtained by virtue of light curing after the surface moisture is removed by drying and blowing, and therefore, a hot galvanized sheet which is large in surface roughness fluctuation and low in price can be taken as the substrate, and then stronger market competitiveness and higher economic benefit can be achieved.
Owner:北京钢研新冶工程设计有限公司

Yunnan arabica coffee bean preparation technology

The invention discloses a Yunnan arabica coffee bean preparation technology. The Yunnan arabica coffee bean preparation technology includes: subjecting fresh coffee cherries to mechanical peeling within 12 hours after picking so as to separate coffee beans from peels thoroughly, subjecting the coffee beans to fermentation at normal temperature for 12 hours, adding 1.5 times of clean water to soak the coffee bean flesh for 12 hours, performing floatation and classification prior to airing surface moisture on the moist coffee beans with hulls, and transferring the coffee beans to a clean and peculiar-smell-free airing shelf for sun drying till 10-12.5% of water content is left; hulling by a huller, filtering imperfect coffee beans, removing small coffee beans with pore diameter smaller than 6 millimeters by a vibration classification screen, and removing all defective coffee beans in different colors by manual picking-up to obtain primary coffee beans; lightly baking the primary coffee beans for 8-12 minutes by controlling the out-of-pot temperature of the coffee beans to range from 190 DEG C to 195 DEG C and the chromaticity of the coffee beans to range from 95 degrees to 130 degrees so as to obtain target objects. The Yunnan arabica coffee bean preparation technology has the advantages that simple technology and low cost are achieved, excellent savory and mellow degree and acidity degree of Yunnan coffee beans are highlighted on the premise that quality of the Yunnan coffee beans is guaranteed, and parameters and indexes in the primary Yunnan coffee bean processing process are provided.
Owner:德宏后谷咖啡有限公司

Semen coicis prepared decoction pieces and preparation method thereof

The invention relates to the field of traditional Chinese medicine decoction pieces, and particularly relates to semen coicis prepared decoction pieces and a preparation method thereof. The semen coicis prepared decoction pieces are prepared from semen coicis and edible oil. The preparation method of the semen coicis prepared decoction pieces comprises the following steps: cleaning the semen coicis, enabling the semen coicis to pass through 30-40 mesh sieve pores, and putting the semen coicis in 1-5L of drinking water, so that the semen coicis are swelled by soaking; fishing up the swelled semen coicis, draining off surface moisture of the semen coicis, adding the edible oil, uniformly stirring, steaming for 3-4 hours by using moderate heat till cores of the semen coicis are well-done, taking out the steamed semen coicis, airing till the surfaces of the semen coicis are bright and the semen coicis is transparent, putting the semen coicis in the sun, and slightly drying the semen coicis till the semen coicis has hardness by holding with hands; and frying for 2-5 minutes by using moderate heat till the semen coicis is popcorn-shaped, taking out, screening to remove sand, and cooling, thus obtaining the semen coicis prepared decoction pieces. The semen coicis prepared decoction pieces have the advantages that effective components in cells of the semen coicis prepared decoction pieces are rapidly dissolved out, the effects of clinically reducing blood glucose and resisting tumors are enhanced, and the irritation is reduced. The processing technology of the semen coicis prepared decoction pieces has the advantages of high efficiency, standardization, energy conservation, environmental protection and the like.
Owner:徐葱茏 +1
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