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34results about How to "Not stable" patented technology

Preparation method of branched polystyrene-maleic anhydride and application thereof

InactiveCN102344526APolymerization conditions are mildControllable polymer structure and propertiesTransportation and packagingOrganic dyesMaleic anhydrideSolvent
The invention relates to a preparation method of branched polystyrene-maleic anhydride, comprising the steps of: (1) under normal pressure, dissolving p-vinylbenzyl mercaptan, styrene, maleic anhydride, and an initiator for free radical polymerization in a polymerization solvent; (2) under stirring, heating the solution obtained in step (1) to a temperature of 30-40DEG C and introducing nitrogen to the solution, sealing the reaction container, keeping stirring, raising the temperature of the solution to 65-80DEG C and preserving the heat for a reaction of 10-24h; (3) after the reaction, conducting pumping filtration to the solution obtained in step (2), leaching the solid from filtration with a hot precipitating agent, then dissolving the solid in an organic solvent, filtering out insoluble impurities therein, conducting precipitation and pumping filtration to the obtained solution in a precipitating agent, subjecting the solid obtained from filtration to dissolution, precipitation and pumping filtration, and carrying out vacuum drying to the generated solid. According to the invention, the polymerization conditions are mild, the polymers have controllable structural performance, and the polymerization product has excellent performance, simple and convenient preparation operations, as well as good application.
Owner:JIANGNAN UNIV

Multifunctional glass machining device

The invention relates to a multifunctional glass machining device which comprises a machining base and a machining cross beam. An X-axis guide rail and a machining head are arranged on the cross beam.The machining head conducts linear motion along the X-axis guide rail. A machining table is arranged at the upper portion of the machining base, and the machining platform is arranged at the exact lower portion of the cross beam correspondingly. The multifunctional glass machining device is characterized in that rack guide rail structures are arranged on the two edges of the machining base; the machining cross beam conducts linear motion along the rack guide rail structures at the two ends; splicing structures are arranged on the other two side faces, corresponding to the rack guide rail structure, of the machining base; the width of the machining base is limited within 2 meters, multiple machining bases can be spliced; at least two round holes are formed in the machining platform; and pneumatic lifting sucker structures are arranged in the round holes. One platform can be used for achieving machining work of various kinds of glass, the machining platform can ensure that the width isnot changed, stability of a machining machine head is ensured, and meanwhile it is ensured that mechanical equipment achieves loading and unloading transportation or demounting and mounting of containers and flexible arrangement of working space.
Owner:佛山市博斯马克机器人有限公司

Preparation method for deuterium-containing metal film target

The invention discloses a preparation method for a deuterium-containing metal film target. The preparation method comprises the following steps: firstly, using high-purity molybdenum or high-purity copper as a substrate material of the deuterium-containing metal film target, and performing surface pretreatment on the substrate material; secondly, mounting and placing the substrate into a physical vapor deposition (PVD) vacuum coating machine, bombarding the surface of the substrate with argon ions, removing an oxide layer on the surface of the substrate by sputtering; thirdly, setting the coating temperature of the substrate, introducing high-purity deuterium gas in a vacuum cavity, starting the coating machine, and directly preparing the deuterium-containing metal film; fourthly, turning off the coating machine, continually introducing deuterium gas into the vacuum cavity, and turning off a deuterium gas flower meter until an appropriate air pressure is reached in the cavity. By adopting the preparation method, the mechanical performance of the deuterium-containing metal film target is improved, the brittleness and occurrence of cracks are controlled effectively, and adhesive force of the target film is enhanced; meanwhile, the thickness of a dead layer on the surface is decreased, the purity of the target film is increased, the neutron yield of a neutron generator is increased, and the service life of the target is prolonged.
Owner:INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS

Method for enriching and stabilizing mercury in coal-fired flue gas by using blast furnace slag modified desulfurizer

The invention discloses a method for enriching and stabilizing mercury in coal-fired flue gas by using a blast furnace slag modified desulfurizer. The method comprises the following steps: using an FGD desulfurizer slurry, using blast furnace slag as a modifier, and mixing the blast furnace slag and the desulfurizer slurry according to a mass ratio of the blast furnace slag to a dry desulfurizer of 1 to 2-3 to form iron manganese oxide-desulfurizer mixture system so as to prepare a desulfurizing-mercury capturing composite slurry; then using the desulfurizing-mercury capturing composite slurryfor desulfurizing the coal-fired flue gas and enriching and absorbing the mercury in the coal-fired flue gas. According to the method, the blast furnace slag and the desulfurizer are mixed to preparethe desulfurizer slurry for desulfurizing flue gas in a coal-fired power plant; toxicity leaching and volatilization testing are performed on the mercury in an obtained desulfurization material, themercury in the obtained desulfurization material is more stable than ordinary desulfurization gypsum, the concentration of the leached mercury is lowered, the volatile release rate is greatly reduced,and the inhibitory effect on an environmental mercury pollution source is strong. Therefore, the method is of a great significance in atmospheric environmental protection.
Owner:SHANGHAI UNIV

Wireless communication system device for communication

The invention belongs to the related technical field of communication, and particularly relates to a wireless communication system device for communication, which comprises a router, wire passing grooves, fans, limiting blocks, a thermal inductor, a supporting plate, a lifting rod, a sliding groove, an ultraviolet sensor and an antenna. The outer wall of the router is provided with cooling fins, and the wire passing grooves are formed in the outer wall of the router; and a first protective shell is arranged on the outer side of each wire passing groove, telescopic strips are arranged on innerwalls of each first protective shell, a first fixed plate is arranged on one side of each telescopic strip, first movable blocks are arranged in each first fixed plate, first hooks are arranged on theinner sides of the first movable blocks, and meanwhile first rubber cushions are arranged on one sides of the first hooks. According to the wireless communication system device for communication, through the arrangement of the springs, the telescopic rods and the supporting plates, a damping and buffering effect can be achieved on the device, the situation that a router is broken when the devicefalls from a high position is prevented, and therefore the using effect of the device is greatly improved.
Owner:广州融益科技有限公司

Collar and sleeve singeing mechanism

The invention discloses a collar and sleeve singeing mechanism. The collar and sleeve singeing mechanism comprises feed roller, an edge stirring assembly, a humidifying assembly, fire spraying assemblies, a singeing assembly, a fire extinguishing assembly, and a discharge roller; the edge stirring assembly comprises a pair of edge stirring rods matching each other; a edge stirring gap only used for passing of collar and sleeve cut-parts is left between the two edge stirring rods; the feed roller, the humidifying assembly, singeing rollers, fire extinguishing rollers, and the discharge roller are arranged successively; the edge stirring assembly is arranged between the feed roller and the humidifying assembly; the singeing assembly is provided with the first singeing roller and the second singeing roller; the first singeing roller and the second singeing roller are arranged with a gap left between the first singeing roller and the second singeing roller; the fire spraying assemblies are arranged on the outside of the first singeing roller and the outside of the second singeing roller respectively; the fire spraying holes of the corresponding fire spraying assemblies are arranged toward the first singeing roller and the second singeing roller; the fire extinguishing assembly is used for fire extinguishing treatment of collar and sleeve cut-parts. The collar and sleeve singeing mechanism is short in process flow, is capable of reducing cost, and is capable of improving singeing effect effectively.
Owner:GUANGDONG ESQUEL TEXTILES CO LTD

Fluoride-doped high-capacity Gd-Mg-Ni-based composite hydrogen storage material and preparation method thereof

The invention relates to a fluoride-doped high-capacity Gd-Mg-Ni-based composite hydrogen storage material and a preparation method thereof. The fluoride-doped high-capacity Gd-Mg-Ni-based composite hydrogen storage material comprises the following components: GdxMg100-x-yNiy + m wt.% (TiF3, NbF5), x and y are atomic ratios, x is more than or equal to 1 and less than or equal to 9, y is more than or equal to 5 and less than or equal to 20, m is the weight percentage of the TiF3 or the NbF5 in an alloy, and m is more than or equal to 2 and less than or equal to 8. Preferably, x is equal to 5, y is equal to 10, and m is equal to 5, namely Gd5Mg85Ni10 + 5wt.% (TiF3, NbF5). According to the preparation method, the preparation method comprises the following steps that medium-frequency induction heating smelting is adopted under the protection of high-purity helium, liquid alloy is injected into a casting mold, and a cylindrical matrix alloy cast ingot is obtained; and an as-cast alloy is crushed mechanically and sieved with a 200-mesh sieve, sieved alloy powder and a certain amount of catalysts (TiF3 and NbF5) are filled into a stainless steel ball milling tank, vacuumizing is achieved, high-purity argon is filled, and ball milling in a planetary high-energy ball mill is carried out for a certain time to obtain the alloy powder with ultrafine grains (nanoscale). According to the fluoride-doped high-capacity Gd-Mg-Ni-based composite hydrogen storage material and the preparation method thereof, through component design, microstructure regulation and control and addition of a multi-element catalyst, the thermal stability of alloy hydride is reduced, and the hydrogen absorption and desorption thermodynamic and dynamic performance of the alloy is improved.
Owner:卜文刚

Speed regulation type magnetic coupler with completely separated power source and load and small axial space

The invention provides a speed regulation type magnetic coupler with a completely separated power source and load and a small axial space, and the magnetic coupler comprises a first transmission ringand a second transmission ring; good conductors are uniformly distributed on the first transmission ring, good conductor end rings for completely short-circuiting the good conductors are arranged at two ends of the good conductors, and the first transmission ring uniformly distributed with the good conductors is a conductor ring; permanent magnets are uniformly distributed on the second transmission ring, and the second transmission ring on which the permanent magnets are uniformly distributed is a permanent magnet ring; the conductor ring and the permanent magnet ring are not in mechanical contact in the axial direction and the radial direction and are air gaps; the first transmission ring is in rigid connection with the power source through a first bearing seat, the power source and thebearing seat are installed on the linear moving platform, and the linear moving platform is installed on the bottom plate. The second transmission ring is in rigid connection with a load through a second bearing seat, and the second bearing seat is installed on the bottom plate and keeps coaxial and concentric with the first bearing seat. The speed regulation type magnetic coupler has the advantages of being short in axial speed regulation length, high in speed regulation reliability, good in vibration isolation effect and the like.
Owner:DALIAN JIAOTONG UNIVERSITY

Preparation method of branched polystyrene-maleic anhydride and application thereof

The invention relates to a preparation method of branched polystyrene-maleic anhydride, comprising the steps of: (1) under normal pressure, dissolving p-vinylbenzyl mercaptan, styrene, maleic anhydride, and an initiator for free radical polymerization in a polymerization solvent; (2) under stirring, heating the solution obtained in step (1) to a temperature of 30-40DEG C and introducing nitrogen to the solution, sealing the reaction container, keeping stirring, raising the temperature of the solution to 65-80DEG C and preserving the heat for a reaction of 10-24h; (3) after the reaction, conducting pumping filtration to the solution obtained in step (2), leaching the solid from filtration with a hot precipitating agent, then dissolving the solid in an organic solvent, filtering out insoluble impurities therein, conducting precipitation and pumping filtration to the obtained solution in a precipitating agent, subjecting the solid obtained from filtration to dissolution, precipitation and pumping filtration, and carrying out vacuum drying to the generated solid. According to the invention, the polymerization conditions are mild, the polymers have controllable structural performance, and the polymerization product has excellent performance, simple and convenient preparation operations, as well as good application.
Owner:JIANGNAN UNIV

Flexible plate die-cutting gilding press with high-precision adjusting structure

The invention relates to the technical field of die-cutting gilding machines, in particular to a flexible die-cutting gilding machine with a high-precision adjusting structure, which comprises a feeding disc, a rotating shaft is fixedly connected in the feeding disc, a protective shell is rotatably connected to the upper side of the feeding disc, and a supporting rod is fixedly connected to the lower side of the protective shell. A containing plate is fixedly connected to the rear side of the protective shell, a distance limiting outer plate is fixedly connected into the feeding disc, and the lower side of the distance limiting outer plate is slidably connected with the upper side of the feeding disc. By means of the right triangle shape of a distance adjusting block, it is guaranteed that the distance adjusting block can be attached to the inner side of a feeding plate to slide leftwards, by means of the inclined shape of the distance adjusting block, a distance adjusting plate can be extruded to slide forwards in the feeding plate, and the attaching conveying stability of materials with different diameters is improved; and it is guaranteed that the distance between the protective shell and a distance limiting inner plate and the distance between the feeding plate and the distance adjusting plate can be synchronously adjusted, and the practicability that the feeding disc can convey materials with different radiuses is improved.
Owner:南通普林派克机电科技有限公司
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