37results about How to "Efficient shielding" patented technology

The invention discloses a compound shielding material containing MOF derivative porous gadolinium oxide and a preparation method and relates to the field of neutron radiation protection. The compoundshielding material is prepared from the following raw materials in parts by weight: 1-100 parts of epoxy resin, 1-10 parts of curing agent, 1-100 parts of auxiliaries and 1-100 parts of MOF derivativegadolinium oxide, wherein the porous gadolinium oxide is acquired from the process of high-temperature calcination and pyrolysis of gadolinium-based metallic organic framework material. Epoxy resin is a neutron slowing material; gadolinium element is a neutron absorbing material; the porous feature of MOF derivative gadolinium oxide is beneficial to strong interaction with an epoxy resin substrate. The compound shielding material containing MOF derivative porous gadolinium oxide provided by the invention has excellent thermal neutron shielding capacity, high thermal stability and high mechanical stability.

The invention provides a method for purifying a pulping alkali-recovered green liquor to prepare high-purity calcium carbonate. The method comprises the following steps of sequentially adding quicklime, talcum powder, an iron shielding agent and an organic polymer flocculant into a turbid green liquor, stirring the mixture uniformly, then conducting standing for a short time, and taking a clear green liquid at the upper layer to obtain a clean green liquor; adding quicklime into the clean green liquor, stirring the mixture for slaking, removing slag to obtain a refined slaking liquid, and further adding hydrogen peroxide for causticization and bleaching to obtain an alkali-recovered white mud suspension; carrying out solid-liquid separation on the alkali-recovered white mud suspension to obtain a white liquid and white mud; making the white mud subjected to washing, acidifying, carbonizing, grinding or sieving and drying to obtain high-purity calcium carbonate with uniform particle size; feeding the white liquid for steaming and boiling. According to the method, rapid flocculation and sedimentation of a green-liquor suspended matter system are achieved by the talcum powder, a high-clarity clear filtrate can be obtained through simple sedimentation, high-purity calcium carbonate can be obtained through causticization, and the method has a significant driving meaning on promotionof the popularization of a white mud solid waste resource utilization technology.

The invention provides a method for protecting the privacy of an HTTP (hyper text transport protocol) message and a device for protecting the privacy of the HTTP message. The method comprises the following steps of: S1, receiving an HTTP original message to be processed; S2, analyzing the received HTTP original message, and positioning to a URL (uniform resource locator) field and a COOKIE field of the HTTP message; S3, respectively filtering the URL field and the COOKIE field obtained in the S2, and filtering out privacy information included in the URL field and the COOKIE field to obtain privacy-protected URL field and COOKIE field so as to obtain the privacy-protected HTTP message. According to the invention, the problem of the leakage of the privacy information when a user surfs the internet can be effectively solved, the safety for the user to surf the internet can be guaranteed, and the safety of the internet transmission can be improved.

The invention discloses a transparent plasticized PVC (Polyvinyl Chloride) functional film which has the characteristic of selective transmittance and absorption of solar spectrums and has the function of effectively shielding ultraviolet light, infrared light and high-energy visible light, namely, blue light and the like. Meanwhile, the invention further provides a preparation method for the transparent plasticized PVC functional film; the preparation method is convenient in operation and stable in product performance. The transparent plasticized PVC functional film is prepared from the following raw materials in parts by weight: 100 parts of PVC resin, 60-70 parts of plasticizer, 1.2-1.8 parts of thermal stabilizer, 0.4-0.6 part of ultraviolet absorber, 1.2-6.0 parts of pigment master batch, 0.2-20 parts of surface modified metallic oxide and 0.5-0.8 part of lubricating agent.

The invention discloses a special soap granule for enzyme-added laundry soap and a preparation method thereof, relates to the fields of soap granules for laundry soap and production thereof, and solves the problem of unstable addition of enzyme preparations in the development of enzyme-added laundry soap. The special soap granule for enzyme-added laundry soap is prepared by the following raw materials by weight: 10.8-13.2 parts of caustic soda, 66-76 parts of mixed fatty acids, 1-5 parts of glycerin, 1-5 parts of borax, 3-10 parts of sodium silicate, 0.2-1 parts of activated clay, and 0.08-0.15 parts of hydroxyethylidene diphosphonic acid. By selecting appropriate components and ratios thereof and by modifying the preparation method, a special soap granule for enzyme-added laundry soap with a highly-stable enzyme preparation is produced; in practical production and application, the stability of the enzyme preparation in the enzyme-added laundry soap is maintained, and the soap has very good decontamination and washing effect.

The invention discloses a shelter wall plate with radar stealth and high-efficiency electromagnetic shielding, which comprises a bottom plate, a support plate and a connecting frame. The surface of the support plate is movably connected, the top of the support plate is provided with a first fixing groove, and the bottom of the support plate is provided with a first fixing block that engages with the inner cavity of the first fixing groove. The present invention relates to the technical field of shelters. When installing the radar stealth and high-efficiency electromagnetic shielding shelter wall plate, the connecting frame is fixed on the bottom plate, the supporting plate and the connecting frame are assembled, and then the fixing rods are sequentially passed through the movable holes on the fixing frame, and the It is screwed into the threaded hole, which can quickly assemble the other bulkhead, making the overall modularization of the shelter wall, lightweight, can quickly disassemble and assemble the other bulkhead, more convenient to use and move, increasing It improves the practicability of the shelter panels.