235 results about "Liquid silicon" patented technology

The utility model discloses a liquid silica gel feeder with 1: 1 feeding, which comprises a bottom frame, a control box, a first lifting driving mechanism, a first hydraulic feeding mechanism, a second lifting driving mechanism, a second hydraulic feeding mechanism, a feeding mixer, a pressure stabilizing valve and a switch valve, and is reasonable in structural design and small in size, and the occupied space is saved; the first lifting driving mechanism and the second lifting driving mechanism can drive the first hydraulic feeding mechanism and the second hydraulic feeding mechanism to synchronously ascend and descend correspondingly, and the first hydraulic feeding mechanism and the second hydraulic feeding mechanism can inject liquid silica gel in the two material barrels into the feeding mixer according to the proportion of 1: 1. And finally, the switch valve is opened to inject the liquid silica gel into various molding equipment such as an injection molding machine, the operation is stable and reliable, the matching error is small, and the operation is convenient.

The invention belongs to the field of silica gel foam, and particularly relates to liquid silica gel foam with lasting and rapid rebound resilience after hot pressing. According to the liquid silica gel foam with lasting and rapid resilience after hot pressing, vinyl silicone oil with different viscosities is compounded, a proper amount of polyvinylsilicone oil is added, and the proportion of the vinyl silicone oil, the mixed hydroxyl silicone oil and the mixed hydrogen-containing silicone oil is regulated and controlled, so that the elasticity of the foam is improved; the liquid silica gel foam which is excellent in buffering performance and capable of rapidly rebounding and has no obvious damage on the surface after being subjected to hot pressing for multiple times at high temperature and high pressure is prepared according to the adding amount of the functional filler and the proportion of the fillers. When the liquid silica gel foam is used as a circuit board buffer material, scratches caused by hard contact between a heating plate and a laminated plate can be effectively avoided, and the service life of the heating plate and the service life of the laminated plate are prolonged.

The invention provides a 1500-DEG C thermal shock and oxidation resistant plasma spraying method for a Si coating on the surface of graphite, coating graphite and application. The method comprises the following steps that the to-be-sprayed surface of a graphite matrix is pretreated; spraying the to-be-sprayed surface by adopting a plasma spraying technology to obtain a Si coating on the to-be-sprayed surface; carrying out heat treatment on the graphite matrix with the Si coating in a vacuum environment by adopting a vacuum heat treatment technology, so that part of solid silicon in the Si coating is molten into liquid silicon or silicon steam, and the liquid silicon or silicon steam permeates into the graphite matrix containing air holes under the action of capillary tubes, so that part of liquid silicon or silicon steam and the graphite matrix are subjected to chemical reaction; and thus, the gradient transition Si / SiC coating is obtained through in-situ growth on the to-be-sprayed surface of the graphite matrix. According to the method provided by the invention, the problem that a traditional method for spraying the Si coating on the surface of the graphite in a plasma manner cannot be used in an environment of 1500 DEG C is solved.

The application belongs to the technical field of ceramics, and particularly relates to a preparation method of high-entropy boride-silicon carbide composite ceramics, which comprises the following steps: mixing high-entropy boride powder and carbon source powder, and then adopting a ceramic forming method to prepare a ceramic green body; embedding the ceramic green body with silicon powder, and performing liquid silicon infiltration treatment in a vacuum environment to obtain high-entropy boride-silicon carbide composite ceramics. The application mixes high-entropy boride and carbon source, and then performs liquid phase silicon infiltration, so that the process is simpler, the residual Si content is relatively less, and high-entropy boride-silicon carbide composite ceramics with a density of more than 99% can be obtained, which is suitable for large-scale production and application.

The invention relates to the technical field of silica gel injection molding temperature control, in particular to a temperature control system and process for liquid injection molding of a silica gel toy. The process comprises the following steps: S1, according to three-dimensional model data of a silica gel toy, automatically identifying geometric feature information of the silica gel toy; s2, setting initial temperature parameters of each injection molding stage on the basis of the geometrical characteristic information in combination with physical characteristics of the liquid silica gel; s3, in the injection period, based on the initial temperature parameters, micro-heating / mold temperature maintaining / micro-cooling is conducted on different areas of the silica gel toy; s4, in the pressure maintaining period, when the liquid silica gel is filled to the preset filling proportion, the mold temperature of the multicolor injection molding material flow interface area is reduced to the freezing temperature; s5, in the main vulcanization period, a self-adaptive temperature adjustment strategy is executed on the thick-wall area and the thin-wall area; and S6, in the cooling and demolding period, a corresponding rapid cooling strategy / slow cooling strategy is executed on the thick-wall area and the thin-wall area. The size stability and the assembly precision of the complex thin-wall silica gel component are remarkably improved.

The utility model provides a luminous organic silicon pad which comprises an organic silica gel layer, a base material layer and an anti-skid layer which are sequentially arranged from top to bottom, and the organic silica gel layer is formed by adding a luminous material into liquid silica gel. According to the utility model, the surface layer of the luminous organic silicon pad is made of the organic silica gel, so that the antifouling, hydrophobic, anti-skid and scratch-resistant properties of the luminous organic silicon pad can be improved, and the prepared organic silica gel layer can have the luminous property by adding the luminous material into the liquid silica gel, so that the luminous effect of the luminous organic silicon pad is improved. According to the invention, the discrimination of a user in a dark environment can be improved, and meanwhile, the use interestingness of the user can be improved.

The utility model discloses a waterproof Fakra connector and a wire end connector. The waterproof Fakra connector comprises a wire end plastic shell, a plugging column is arranged in the wire end plastic shell, a first plugging cavity and a second plugging cavity are arranged in the plugging column, a first plugging part is arranged around the plugging column, a power supply female terminal is arranged in the first plugging cavity, and a connecting terminal is arranged in the second plugging cavity; the board end connector comprises a board end plastic shell and a second insertion part arranged in the board end plastic shell, and a power supply terminal pin and a connection terminal pin are arranged in the second insertion part; the end portion of the insertion column protrudes out of the front end face of the first insertion portion, and a liquid silica gel waterproof ring is arranged on the side face of the insertion column and located between the second insertion portion and the first insertion portion. According to the waterproof Fakra connector, the extension line end plastic shell is adopted, the liquid silica gel waterproof ring is additionally arranged, the extension board end plastic shell is matched with the liquid silica gel, and the waterproof function of the plug-in position is achieved; a plastic sleeve structure is added, assembling is carried out on the basis of an original conductor assembly, and the waterproof function of the wire end connector is further achieved.

The invention discloses a silicon capsule and a preparation method thereof as well as a preparation method of a continuous fiber toughened ceramic matrix composite material, and solves the problems that in a traditional melt siliconizing process, when the reaction temperature rises, due to direct contact between silicon powder and lower heat conductivity of liquid silicon, a remarkable temperature gradient is formed in the embedded silicon powder, and the heat conductivity of the silicon powder is reduced. The silicon powder melting process is not uniform due to the temperature difference; according to the preparation method, polyvinyl alcohol is taken through a water-soluble binder, carbon powder is uniformly wrapped on the surfaces of silicon particles, then the taken polyvinyl alcohol is removed at a high temperature, the carbon powder on the surfaces and the silicon particles react to form a SiC thin layer, and finally the silicon particles with the surfaces wrapped with the polyvinyl alcohol solution are cracked at the high temperature and uniformly permeate into a porous intermediate, so that the silicon-carbon composite material is obtained. And the infiltration uniformity of liquid silicon and the compactness of the material can be effectively improved, large-area silicon blocks formed when traditional silicon melt is cooled and damage to surface fibers of products in the processing and breaking process are reduced, and net size forming is achieved.

The utility model provides a liquid silica gel forming device, and belongs to the technical field of silica gel forming equipment. The problem that the production efficiency is affected due to the fact that silica gel in a runner is blocked by high temperature when existing liquid silica gel is formed is solved. The liquid silica gel forming device comprises a frame body, a gel storage tank, a mold and a heating table used for heating the mold, the mold comprises an upper mold body and a lower mold body, the upper mold body and the lower mold body are assembled to form a cavity, and a runner communicated with the cavity is formed in the upper mold body; the mold further comprises a lifting mechanism, the lifting mechanism is used for driving the heating table to lift up and down, the glue storage tank is located above the upper mold and used for injecting glue into the cavity through the runner under normal pressure, the lower mold is located below the upper mold and located on the heating table, and a heat insulation structure used for conducting heat insulation on the runner is arranged in the upper mold. The glue injection structure is simple, the cost is lower, the runner is prevented from being blocked during molding, the production operation is simple, and the efficiency is higher.

The invention discloses a fragmented silicon carbide crystal ingot repairing method which comprises the following steps: splicing a plurality of silicon carbide fragments to form an integral silicon carbide crystal ingot, promoting macroscopic crack opening healing by adopting a liquid phase induction healing process, and then filling microscopic pores around cracks by adopting an in-situ gas phase permeation process to realize crack repairing of the fragmented silicon carbide crystal ingot. According to the provided broken silicon carbide crystal ingot repairing method, a liquid phase induction healing process is adopted, liquid silicon and silicon carbide react to fill gaps, then cooling is performed to form new silicon carbide bonding, macroscopic crack openings are promoted to be closed, and then an in-situ gas phase permeation process is adopted to repair the broken silicon carbide crystal ingot. A chemical covalent network is constructed by depositing and permeating silicon carbide in micro pores by using a silicon source and a carbon source, so that crack repair of the silicon carbide crystal ingot is realized. According to the method, the broken crystal ingot is repaired through physical reconstruction and chemical bonding, and the mechanical and electrical properties of the broken crystal ingot are recovered.

The invention relates to the technical field of heat insulation and preservation plates, and discloses an aerogel heat preservation composite plate which comprises a first glass fiber gridding cloth layer, an aerogel felt layer and a second glass fiber gridding cloth layer which are sequentially arranged in a stacked mode. The first glass fiber gridding cloth layer, the aerogel felt layer and the second glass fiber gridding cloth layer are sewn and connected through sewing threads, and a preparation method of the aerogel felt layer comprises the steps that firstly, cerium oxide is modified and grafted with a silane coupling agent, then graphene oxide and the silane coupling agent modified cerium oxide are dispersed with water, and the aerogel felt layer is obtained. Adding a liquid silicon compound into the mixture, adding a base catalyst to obtain sol, adsorbing the sol by using a porous reinforcing material, and then aging and drying to obtain the composite material. The aerogel insulation board is high in tensile strength and good in insulation effect.

The invention relates to the technical field of gluing pumps, and discloses a liquid silica gel injection machine and a using method, the injection machine comprises a base, a lifting rod, a hydraulic rod, a pressure plate, a connecting pipe, a three-way valve, a stirring part, a cleaning and scraping part and a squeezing and spraying part. A stirring part downwards pushes a trigger switch through a T-shaped ring, an electric rod is automatically started to push a motor and a glue stirring piece to extend into a glue barrel, a stirring plate and a glue disc rotate to stir liquid silica gel, and layering and local curing are prevented; the cleaning and scraping part is quickly inserted into a supporting rod through an inserting rod, a T-shaped ring is rotated to drive a rotating sleeve to rotate with a flange as the circle center, and a cotton brush and a scraping plate rotationally clean a pressing disc and the flange; and the extrusion spraying part extrudes the corrugated bag to enable the sol agent to be sprayed to a cleaning surface through the guide channel and the liquid channel, and cooperates with mechanical scraping for cooperative cleaning. The cleaning efficiency is improved, the residual silica gel rate is reduced, the equipment maintenance time is shortened, and the injection quality and the production efficiency are remarkably improved.

The application discloses a composite patch for promoting hair growth, a hair growth cap and a preparation method. The composite patch for promoting hair growth comprises the following raw materials in parts by weight: medical grade liquid silicone 40-60 parts, gelatin 20-35 parts, silane coupling agent 1-2 parts, far infrared ceramic powder 1-2 parts, tourmaline powder 1-2 parts, chisel stone powder 0.5-1.5 parts and neodymium-iron-boron magnetic powder 4-6 parts. The composite patch for promoting hair growth is prepared by selecting the raw materials, so that the composite patch has the functions of radiating far infrared, generating a micro electric field and a magnetic field and having weak negative electric characteristics at the interface to improve the directional migration of calcium ions, thereby achieving the purposes of improving the micro environment of hair follicles and promoting hair growth.

The utility model discloses a rapid prototyping liquid silica gel mould, which comprises a lower mould plate and an upper mould plate, a plurality of prototyping bosses are fixed on the upper surface of the lower mould plate, raised mould cores are fixed on the upper surfaces of the prototyping bosses close to the front side and the rear side, conical cylinders are uniformly distributed on the upper surfaces of the mould cores, and the lower mould plate is fixed on the lower mould plate. A first runner communicated with the area where the mold core is located is formed in the upper surface of the forming boss, a forming concave cavity matched with the forming boss is formed in the lower surface of the upper mold plate, a mold cavity matched with the mold core is formed in the top face of the inner side of the forming concave cavity, and a forming concave hole matched with the main body is formed in the top face of the inner side of the mold cavity. Silica gel in a molten state is sent to the mold core through the first flow channel to fill the mold cavity and fill the small cavities corresponding to the main body, and air in the small cavities is exhausted through the formed exhaust holes to fill the small cavities, so that the forming quality of silica gel products is guaranteed faster and better.

The utility model provides a magnesium metal vacuum smelting furnace which comprises a tank body and a tank cover, a crucible and a splash-proof cover are arranged in the tank body, and a liquid ferrosilicon heat preservation input mechanism, a residue siphon discharging mechanism and a residual iron discharging mechanism are arranged at the bottom of the tank body. The liquid silicon iron heat preservation input mechanism comprises a liquid silicon iron built-in channel which is arranged upwards from the bottom of the crucible and a silicon iron heat preservation conveying pipeline which is arranged at the bottom of the tank body; the residue siphon discharging mechanism comprises a residue discharging built-in channel arranged upwards from the bottom of the crucible and a residue siphon discharging pipeline arranged on the outer side of the bottom of the tank body, a transparent viewing opening is formed in the pipe wall of the residue siphon discharging pipeline, and a cover body is arranged at an end opening of the residue siphon discharging pipeline; and the residual iron discharging mechanism is connected with the bottom of the tank body. According to the utility model, a liquid ferrosilicon reducing agent can be ensured not to be solidified during input, residues after reduction reaction can be smoothly discharged, and reduced residual iron can be automatically discharged.

The invention relates to the technical field of liquid silica gel forming, and discloses a liquid color silica gel forming process and clothing application, and the liquid color silica gel forming process comprises the following steps: step 1, base material pretreatment: selecting a flexible base material, cutting according to the size of a formed part, removing corner burrs, and sequentially carrying out ultrasonic cleaning, hot air drying and plasma activation; 2, according to the forming color requirement corresponding to the qualified flexible substrate obtained in the step 1, color paste preparation and dispersion are carried out, a bi-component addition type liquid silica gel matrix and special color paste are taken according to the mass ratio of 100: 8, 0.8% of surface modified nano-silica dispersion media are added, a dynamic shearing-ultrasonic two-stage dispersion technology is adopted for treatment, and the flexible substrate is obtained. According to the liquid color silica gel forming process, a two-stage dispersion process is adopted, a special dispersion medium is matched, uniform dispersion of color paste is achieved, and the liquid color silica gel forming process has the core advantages of being stable in color, washable and free of fading, good in silica gel fluidity after dispersion and suitable for scenes with high color requirements such as garment decoration.

The application relates to the technical field of injection molding, and discloses an injection-molding-based built-in structural part type forming die and a forming method. The injection-molding-based built-in structural part type forming die comprises a lower die and an upper die, a cavity, a first runner and a plurality of fan-shaped communication openings are formed between the lower die and the upper die, and the first runner is arranged on the outer side of the cavity. Through the arrangement of the first runner and the fan-shaped communication openings, liquid silicone can be uniformly flowed into the cavity, the silicone can be uniformly coated around the structural part, and the problems of insufficient local filling or excessive thickness can be avoided. The step-by-step preforming and low-pressure filling process is adopted, the upper half shell and the lower half shell are preformed as rigid barriers, the damage risk of high-pressure silicone solidification to the precise structural part is completely eliminated, the product performance and the yield are improved, the size precision and the functional integrity of the structural part are guaranteed, the yield and the reliability are remarkably improved, and the method can be applied to high-precision and high-value structural parts.

The invention belongs to the technical field of lithium batteries, and relates to a preparation method of a double-coated silicon-carbon composite material, an electrode and a lithium battery, the method comprises the following steps: soaking a lithium dopant and an MOF material in a first organic solvent, adding a template agent and a catalyst, reacting, filtering, and freeze-drying to obtain a gel complex; in an inert atmosphere, heating the gel complex to a first preset temperature, introducing carbon dioxide according to a preset flow rate, cooling, adding into mixed acid, soaking, pickling, and drying in vacuum to obtain a porous carbon composite material; adding liquid silane, a phosphorane derivative, a dispersing agent, the porous carbon composite material and a silane coupling agent into a second organic solvent, performing spray drying, and performing primary carbonization to obtain a silicon-carbon precursor material; dissolving the resin in a third organic solvent, adding an ionic conductor and a silicon-carbon precursor material, carrying out secondary carbonization, cooling to a second preset temperature, and introducing a reducing gas to obtain a double-coated silicon-carbon composite material; the conductivity is improved, the interface stability is improved, and the full-charge expansion is reduced.

The utility model relates to the technical field of molds, and particularly discloses a liquid silicone mold of a semi-coated conductive integrated circuit. Wherein the front mold assembly comprises a front mold core; the rear mold assembly comprises a rear mold core, a mold core insert arranged on the rear mold core and an ejection assembly connected with the mold core insert; the first forming structure is used for forming the silica gel tooth socket part; and the second forming structure is used for wrapping a control circuit board, the second forming structure comprises a first fixing part arranged on the rear mold core and a second fixing part arranged on the front mold core, and the first fixing part and the second fixing part can be matched to fix the control circuit board. The control circuit board is good in fixing effect and good in forming effect.

The utility model relates to the technical field of clothing labels, in particular to a liquid silica gel clothing trademark which comprises a base layer, a liquid silica gel film, a silica gel limiting layer, a thermal bimetallic strip and a hot melt adhesive layer, the liquid silica gel film covers the top face of the base layer, a gap exists between the liquid silica gel film and the base layer, and the silica gel limiting layer is located on the top face of the base layer and connected with the base layer. A gap is formed in the substrate layer, a gap matched with the gap in shape is formed in the silica gel limiting layer, the liquid silica gel film can extend outwards along the gap to generate elastic deformation, the gap is filled with the thermal bimetallic strip to be connected with the liquid silica gel film, and the hot melt adhesive layer is located on the bottom face of the substrate layer to be connected with the substrate layer. The three-dimensional degree of the mark / logo on the trademark can be changed according to different temperatures, the style and the structure of the trademark can be enriched, practical significance and popularization value are achieved, and it is expected that good economic benefits can be generated.

To provide a thermally conductive silicone resin composition which has good thermal conductivity and in which a pumping-out phenomenon after extended use is prevented.SOLUTION: The thermally conductive silicone resin composition of the present invention contains the following components (A) to (C): (A) X (X=50-99) pts.mass of a liquid silicone resin, (B) (100-X) pts.mass of a linear organopolysiloxane represented by the following formula, and (C) 50-3000 pts.mass of a thermally conductive filler, and as the thermally conductive inorganic particles (C), contains at least one thermally conductive inorganic particle selected from the group consisting of alumina and aluminum nitride, having a median diameter D50 of a cumulative particle size distribution by volume of 80 μm or more.SELECTED DRAWING: Figure 2

The utility model relates to the field of storage devices, in particular to a liquid silicon fertilizer storage device which is used for solving the technical problems that in the prior art, heating equipment is used for keeping the temperature of a storage environment, power consumption is too large, and potential safety hazards exist when electric appliances are used. The water tank is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is located at the top of the heat preservation cover, the water outlet pipe is located on the outer side wall of the heat preservation cover, the bottom of the water tank is not horizontal, the water outlet pipe is located at the bottom of the water tank, two clamping grooves are formed in the tray and are in an inverted L shape, and two clamping blocks are arranged at the bottom of the heat preservation cover. The clamping block can be connected with the clamping groove, and the heat preservation cover is provided with a heat preservation door clamping groove.

The present invention discloses a method for manufacturing a wrist strap with multiple groups of embedded electrode sheets. The method comprises the following steps: firstly, placing the multiple electrode sheets in corresponding mold cavities and injecting liquid silicone. The liquid silicone forms a strap main body after cooling. Then, multiple conducting pins provided on an FPC assembly are embedded into holes at the rear end of the electrode sheets. The FPC assembly is naturally bent and fits the outer side surface of the strap main body. Finally, the strap main body, electrode sheets and FPC assembly connected as one are placed in another corresponding mold cavity. Liquid silicone is injected for a second time. The liquid silicone injected for the second time forms a sealing belt after cooling, thereby completing the manufacture of the wrist strap. The present invention provides a method for manufacturing a strap that can take into account both metal electrodes and silicone electrodes, thereby ensuring that the electrodes are firm and do not fall off when worn. Each electrode is closely attached to the skin through the electrode strap, thereby effectively preventing the wires from being entangled or broken, thereby extending the life of the wires. At the same time, a quick installation connection between the electrodes and the host is achieved, and the interface after the strap and the host are assembled is ensured to be waterproof.

The utility model relates to a liquid silica gel O-shaped ring mold, and relates to the field of silica gel piece production molds, the liquid silica gel O-shaped ring mold comprises an upper mold plate and a lower mold plate, the upper mold plate is provided with a first containing groove, the lower mold plate is provided with a second containing groove, the first containing groove and the second containing groove are jointly spliced to form a space for silica gel forming, and the upper mold plate is provided with a gel injection hole; the second containing groove comprises a connecting groove, a guide groove and a plurality of forming grooves, one end of the connecting groove is communicated with the glue injection hole, the other end of the connecting groove is communicated with the forming grooves, the two ends of the guide groove are communicated with the two forming grooves respectively, glue hiding grooves are formed in the positions, in and out of the liquid silica gel, of the forming grooves, the cross section of each glue hiding groove is triangular, and the glue hiding grooves are communicated with the forming grooves. The O-shaped ring forming device has the effect of improving the forming quality of the O-shaped ring.

This invention discloses a highly flexible fire-resistant electrical cable and its preparation method, relating to the field of electrical cable technology. It includes a conductor layer and, sequentially wrapped around the conductor layer, an insulation layer, a fire-resistant layer, and a sheath layer. The fire-resistant layer is composed of a polymer matrix and phase change microcapsules and ceramicized fillers dispersed within it. Upon heating, the phase change microcapsules undergo phase change and absorb heat before the ceramicized fillers. The phase change microcapsules possess a dual phase change platform. This invention constructs an integrally elastically deformable composite structure through the synergy of a liquid silicone rubber matrix, thin-layer insulation, and flexible fillers. The phase change microcapsules efficiently absorb heat first, significantly delaying internal temperature rise; as the temperature increases, the ceramicized system forms a robust insulation layer, providing long-lasting fire resistance integrity, thus solving the problem in existing electrical cables of simultaneously achieving dynamic bending life and high-level fire resistance integrity.

The utility model relates to a liquid silica gel feeding device. A discharging bin is arranged on the rear side of the top of a workbench, a main shaft is rotationally arranged on the left side of the top of the workbench, the top of the main shaft is connected with a first circular plate, first feeding ports are formed in the top of the first circular plate in a bilateral symmetry mode, first feeding cylinders are arranged at the bottoms of the first feeding ports, and a sleeve is arranged on the upper portion of the main shaft. A second circular plate is slidably arranged on the sleeve, second feeding ports are symmetrically formed in the second circular plate in the left-right direction, second feeding barrels are arranged at the bottoms of the second feeding ports, and sealing covers are connected to the inner sides of the second feeding barrels through hinge pieces. The constant-temperature block is arranged at the bottom of the inner wall of the discharging bin, so that the temperature of the liquid silica gel can be kept between 5 DEG C and 35 DEG C, the original physical and chemical properties of the liquid silica gel are kept, deterioration or aging is avoided, and the usability of the supplied liquid silica gel is kept; through cooperative work of the main shaft, the first circular plate, the first feeding cylinder, the second circular plate and the second feeding cylinder, the feeding amount can be accurately controlled, and the requirements of different components are met.

The invention belongs to the technical field of ceramic material additive manufacturing, and particularly relates to a method for preparing high-performance silicon carbide ceramic through selective laser sintering, which comprises the following steps: heating and stirring silicon carbide powder, resin and a solvent to obtain homogeneous slurry, spraying the slurry into liquid nitrogen through an atomizer to obtain frozen microspheres, and sintering the frozen microspheres to obtain the high-performance silicon carbide ceramic. And then removing the residual solvent through freeze drying to obtain the silicon carbide / resin integrated composite microspheres for selective laser sintering, and after selective laser sintering molding, carrying out low-temperature carbonization pre-sintering and high-temperature liquid silicon reaction infiltration to obtain compact silicon carbide ceramic. According to the method, the ceramic / resin integrated composite microspheres obtained through freeze spray granulation have very excellent additive applicability, silicon carbide nanoparticles are reserved in a green body to achieve dispersion strengthening and toughening, the structure of the selective laser sintering silicon carbide ceramic material is homogenized, and the purpose of improving the comprehensive mechanical property of the selective laser sintering silicon carbide ceramic material is achieved.

To provide a production method for silicon granules that are brought about by reusing waste generated when cutting silicon ingots and are particularly suitable for preparing trichlorosilane.SOLUTION: The production method comprises: a) a step of supplying silicon waste derived from substrates, wherein the waste comprises silicon particles covered with an insulating or metal surface layer; b) a step of chemically treating the silicon waste to remove the insulating or metal surface layer and drying the silicon particles to form a powder; c) a step of metallurgically treating the powder to melt the silicon particles and form a liquid silicon bath; d) a step of introducing at least one co-catalyst into the liquid silicon bath; and e) a step of solidifying the liquid silicon to form silicon granules, wherein the silicon granules comprise a size of 10 to 500 μm, a dopant comprising phosphorus or boron each having a mass fraction of less than 5 ppm, a co-catalyst having a mass fraction of 1 to 2500 ppm, and metal impurities excluding the co-catalyst and having a mass fraction of less than 50 ppm.SELECTED DRAWING: None

The application discloses a renewable energy magnesium smelting system and method, and relates to the field of smelting magnesium metal; the system comprises a magnesium reduction furnace arranged vertically; a graphite cylinder is arranged in the magnesium reduction furnace; graphite pipes are connected to the two ends of the graphite cylinder; the graphite pipes are communicated with a silicon-thermal heat storage system after passing through heat exchangers; molten liquid silicon is arranged in the silicon-thermal heat storage system; the silicon-thermal heat storage system is connected with a wind power generation system, a photovoltaic power generation system and an iron-air battery energy storage system through an intelligent comprehensive power supply coordination control system; the magnesium reduction furnace is used for placing magnesium-containing pellets; a crystallizer is fixedly arranged above the magnesium reduction furnace; a water cooling device is arranged on the crystallizer; and a vacuum pump is communicated with the top of the crystallizer. The magnesium smelting method based on the system directly uses renewable energy, uses magnesium oxide as raw material, and avoids environmental pollution; and the vertically arranged magnesium reduction furnace improves the deslagging efficiency.

The utility model relates to the technical field of trademarks, in particular to a liquid silica gel apparel trademark which comprises a limiting frame, a film covering layer, a connecting block, a liquid silica gel layer and a light reflecting layer, a first hot melt adhesive layer is arranged on the bottom face of the limiting frame, the film covering layer is arranged on the top face of the limiting frame to cover the limiting frame, and the top end of the connecting block is connected with the film covering layer. A second hot melt adhesive layer is arranged on the bottom face of each connecting block, the multiple connecting blocks are regularly distributed below the film covering layer and surrounded by the limiting frame, the liquid silica gel layer is arranged on the top face of the film covering layer and connected with the film covering layer, and the light reflecting layer is arranged on the top face of the liquid silica gel layer and connected with the liquid silica gel layer. The limiting frames and the connecting blocks are bonded and fixed to the surface of the clothes under the action of the hot melt adhesive, the connecting blocks are arranged at intervals and are not completely bonded to the surface of the clothes, the liquid silica gel layer can drive the reflective layer to synchronously distort and deform when the clothes are stretched and deformed or under the action of external force, the reflection angle of light is changed, and the visual effect of the trademark can be improved; the practical significance and the popularization value are realized.