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114results about How to "Enhanced bonding" patented technology

High-strength gas purifying and separating adsorbent as well as preparation and application thereof

The invention relates to the fields of separation of mixed gas and purification of feed gas and discloses a high-strength gas purifying and separating adsorbent. CeO2 is introduced into a porous carrier, clay and a caking agent which are loaded with main active components to effectively disperse the main active components. The creative improvement point of the invention is that the CeO2 is effectively introduced into the adsorbent so as to improve the dispersibility of the main active component of Cu<+> or Cu<++> ion, improve the occupation ratio of a metal active center on the surface of the carrier, promote the effective complexation of Cu<+> with CO in the reaction and effectively improve the separation performance of the adsorbent. The CeO2 is introduced to promote an effective silicon and aluminum hydroxyl network to be formed among the carrier, the clay and the caking agent, promote the tight combination among the main active components of the metal ion, the carrier and the caking agent, strengthen the bonding of silicon and aluminum hydroxyl and effectively improve the strength which can reach over 100N. The adsorbent has favorable strength, is beneficial to being applied to a pressure swing adsorption (PSA) device and has improved practicability of wide application.
Owner:DALIAN HAIXIN CHEM IND

A green synthesis method for carbon quantum dot bonded silica gel chromatography filler

This invention has discloses a green synthesis method for carbon quantum dot bonded silica gel chromatography filler, which comprises the concrete steps of: mixing the solid powder of aconitic acid and tryptophan to be ground evenly, letting the mixture react under the temperature of 180oC- 200oC for 3 - 6 hours. Through dissolution, centrifugation and freeze drying of the generated solid, the amino-functionalized carbon quantum dots (NCDs) are obtained; After that, NCDs are dispersed in DES and added with gamma-glycidoxypropyl trimethoxy siloxane(GPTMS). Under the protection of N2 and the temperature of 55oC- 65oC, the mixture is stirred to react for 22 - 25 hours, then the silica gel (SiO2) is added to react for another 12 - 48 hours. Water and absolute ethyl alcohol are alternatively used to wash the raw product generated from the reaction. Silica gel chromatography filler modified by carbon quantum dots will be generated after drying. This green synthesis method realizes the surface bond of carbon quantum dots and silica gel through epoxy group and amino. DES used in the process of reaction is reaction solvent, which serves as an excellent dispersing agent for carbon quantum dots and silica gel, ensures higher bonded amount, and at the same time, meets the requirements of green chemistry.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Oblique plunger type pure water hydraulic swash plate pump

The invention relates to an oblique plunger type pure water hydraulic swash plate pump, which adopts a sphere flow distribution structure of a cone-shaped cylinder. A plunger and a transmission shaft form an included angle, and relative to the transmission main shaft, the plunger is arranged in a shape of cone; and centripetal force generated during operation facilitates return stroke of the plunger. The main shaft is connected with a conical cylinder via a spline, and the plunger is matched with skid shoes via a ball head. A spherical hinge and the cone-shaped cylinder are pressed by a disk spring, return stroke force during the operation of the plunger is provided and sealing of the skid shoe pair and the flow distribution pair is achieved. A flow distribution disc adopts a sphere flow distribution structure, facilitates balancing of subversion moment generated by the cone-shaped cylinder during operation, and improves the self-alignment performance of the cone-shaped cylinder and the flow distribution plate; the cone-shaped cylinder and the sphere flow distribution disc structure enable the flow distribution window pitch diameter of the flow distribution disc to be reduced, water absorption flow rate is reduced, and self-sucking performance of a pump is enhanced. The pump takes filtered fresh water or seawater as the working medium, solves the problems that the self-sucking performance of a pure water hydraulic plunger pump is poor and the return stroke is difficult, and has remarkable technical advantages.
Owner:BEIJING UNIV OF TECH

Semiaxis type pure-water hydraulic axial plunger pump supported by bearings in cylinder

The invention relates to a semiaxis type pure-water hydraulic axial plunger pump supported by bearings in a cylinder, which adopts a semiaxis type structure that a sliding bearing supports a cylinder body. The semiaxis type pure-water hydraulic axial plunger pump is characterized in that a front bearing supports an input shaft, and a rear bearing is the sliding bearing in the cylinder and is used for supporting the cylinder body. Due to reasonable bearing distribution, the stressing of the bearings is reduced, and the overturning moments of flow distribution discs are balanced. A distributed type return spring penetrates through the cylinder body and acts on a spherical hinge and a floating lining plate respectively, so that not only is the sealing of a sliding shoe pair and a flow distribution pair guaranteed, but also the abrasion of sliding shoes and the flow distribution discs can be automatically compensated. The flow distribution discs are fixedly arranged on a rear end cover and are sealed by adopting sealing rings so as to avoid leakage of the back surfaces of the flow distribution discs. A plunger pair adopts an automatic gap-compensating type sealing structure so as to reduce leakage of the plunger pair and improve the anti-pollution capability of the pump. The semiaxis type pure-water hydraulic axial plunger pump adopts filtered fresh water or seawater as a working medium, adopts all-water lubrication for all friction pairs, is high in power density, can be used for industrial cleaning, seawater freshening and underwater operation tools and the like and is wide in application prospect.
Owner:BEIJING UNIV OF TECH

Detachable plunger piston shoe assembly of swash plate hydraulic pump

The invention relates to a detachable plunger piston shoe assembly of a swash plate hydraulic pump. According to the detachable plunger piston shoe assembly of the swash plate hydraulic pump, the structural form that a plunger is separated from a piston shoe is adopted, the piston shoe comprises an upper component and a lower component, a sealing check ring is installed on the lower component, during work, the pressing force of a return-stroke plate of the swash plate hydraulic pump enables the upper component of the piston shoe, the lower component of the piston shoe, and the sealing check ring to be closely attached to the plunger, and fluid leakage of a plunger ball head, an inner ball socket of the piston shoe and the end face of the piston shoe is avoided. The plunger piston shoe assembly can be applied to a pure-water swash plate hydraulic pump or a traditional swash plate oil-pressure pump and overcome the defect that an existing plunger piston shoe assembly of the swash plate hydraulic pump is difficult to machine, short in service life, poor in maintainability and the like. The detachable plunger piston shoe assembly of the swash plate hydraulic pump has the advantages of being easy and convenient to machine and manufacture, high in rate of finished products, easy to maintain, and the like.
Owner:BEIJING UNIV OF TECH

UHPT tread rubber which can be used in drifting competition

The invention discloses UHPT tread rubber which can be used in a drifting competition. The tread rubber comprises the following components: emulsion polymerized styrene-butadiene rubber 50-70 phr, solution polymerized styrene-butadiene rubber 30-50 phr, carbon black 50-80 phr, white carbon black 20-50 phr, a silane coupling agent 2-5 phr, oil 30-50 phr, functional resin 8-16 phr, zinc oxide 2-4 phr, stearic acid 1-3 phr, sulfur 1.5-2.5 phr, an accelerator 2.0-3.0 phr, and other components 4-7 phr. The formula of the tread rubber provided by the invention innovatively uses the modified solutionpolymerized styrene-butadiene rubber, the highly-dispersed white carbon black with a high specific surface area and the functional resin, also the ratio of fillers and the mixing process of the treadrubber are reasonably adjusted, and the requirements of the usage performance of daily driving and the drifting competition are taken into account: compared with ordinary UHPT tread rubber, the treadrubber provided by the invention has excellent dry ground gripping and manipulating performance; and compared with professional drifting tread rubber, the tread rubber provided by the invention has significantly-improved service life and better-improved wet ground gripping performance, and can meet multi-purpose requirements of usual driving and the drifting competition.
Owner:SAILUN GRP CO LTD

Packaging structure for FBAR device and manufacturing method thereof

The invention provides a packaging structure for an FBAR device. The packaging structure comprises a substrate, at least one first groove, bonding pads, second grooves, a first electrode layer, a second electrode layer and at least one FBAR device plate, wherein the at least one first groove is formed in the upper surface of the substrate; one bonding pad is formed on two sides of the first groove respectively; each second groove is formed in the surface of the corresponding bonding pad; the FBAR device is bonded with the bonding pads, and the electrodes of the FBAR device are arranged in the first groove; the first electrode layer is formed on the lower surface of the substrate, and overlays the tops and the side walls of the second grooves at the same time; and the second electrode layer is formed on the lower surface of the first electrode layer. Correspondingly, the invention also discloses a manufacturing method of the packaging structure for the FBAR device. Through the implementation of the packaging structure for the FBAR device and the manufacturing method of the packaging structure for the FBAR device, the difficulty of the packaging technology can be reduced, and the production technology and production cycle are optimized, so that the packaging cost is greatly reduced.
Owner:贵州汉天下科技(集团)有限公司

Perovskite nanocrystal with stable morphology at high temperature and preparation method thereof

The invention discloses a perovskite nanocrystal with a stable morphology at a high temperature and a preparation method of the perovskite nanocrystal, nanocrystal agglomeration caused by falling of a ligand at a high temperature is inhibited by carrying out cation doping in the perovskite nanocrystal, and the high-temperature stability of the nanocrystal is greatly improved. The preparation method comprises the following specific steps: a, mixing Cs (CH3COOH), octadecene and oleic acid, and carrying out a heating reaction under a protective atmosphere condition to obtain a cesium oleate precursor solution; b, dissolving lead halide in a mixture of octadecene, oleic acid and oleylamine at a high temperature in a protective atmosphere; and c, dissolving the metal-doped halide in a mixture of octadecene, oleic acid and oleylamine at a high temperature in a protective atmosphere to obtain a transparent liquid. D, rapidly injecting the cesium precursor in the step a into the liquid in the step b, reacting for 1 minute, injecting the transparent liquid in the step c, reacting for 30 minutes, and rapidly cooling to room temperature, and e, centrifugally purifying to obtain the perovskite-doped nanocrystal with stable morphology at high temperature.
Owner:MINDU INNOVATION LAB

Cement composite dispersant

InactiveCN110015861AImprove surface activityGood amphiphilic surface activityChemical industryHydrolysis
The invention discloses a cement composite dispersant, and belongs to the technical field of chemical industry. The problems that a current commonly used cement dispersant has a poor dispersion effectand influences on the internal mechanical properties are solved. A low critical micelle concentration can be maintained, the lipophilic groups of the dispersant can be adsorbed on the surface of thecement, and the hydrophilic groups can be combined with water, so that the dispersion effect of the cement is improved better. Hydrogen bonds are formed by silicon hydoxyl groups generated through hydrolysis and hydroxyl group contained in a composite dispersing material B, so that the stability of dispersion is enhanced, and the internal bonding force is improved; high-polarity reactive carboxylgroups in acrylic acid are introduced into humic acid molecules of the dispersant, and the influence of steric hindrance is brought through cooperation with acrylic acid grafting, so that the viscosity-reducing effect of the prepared silicon-containing material is improved, the dispersibility inside the obtained blended material is improved, and generation of sedimentation and uneven dispersion isreduced; and furthermore, the cement cohesion strength is improved, and the internal mechanical properties is further improved after blending of the cement is performed.
Owner:刘国荣
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