50results about How to "Fill in time" patented technology

The invention relates to a preparation method of polylactic acid porous microspheres. The method comprises the following steps: respectively preparing an oil phase solution and a water phase solution;pouring the oil phase solution into the water phase solution, and performing uniform stirring to obtain an O/W emulsion; stirring the O/W emulsion to obtain a polylactic acid microsphere suspension,screening out microspheres with a target particle size from the polylactic acid microsphere suspension, and performing collection to obtain semi-finished polylactic acid microspheres; and performing freeze-drying on the semi-finished polylactic acid microspheres to obtain the finished polylactic acid microspheres. The invention provides the polylactic acid porous microspheres, and the polylactic acid porous microspheres are prepared by using the above method. The invention also provides an application of the polylactic acid porous microspheres as a facial filler. The polylactic acid porous microspheres can produce encapsulation and fibrosis through a chronic inflammatory tissue reaction to stimulate human collagen proliferation to achieve the effect of filling beauty, and the porous structure characteristic can effectively reduce the residual of organic reagents, thereby ensuring the safety of the product.

The invention relates to a preparation method of a self-healing silicon-carbide-fiber-reinforced silicon-boron-nitrogen-carbon composite material, which comprises the following steps: (1) preparing a polyborosilazane (PBSZ) precursor; dissolving the PBSZ precursor in a toluene solution under the protection of N2 to obtain a PBSZ toluene solution; transferring into a pipe furnace, crosslinking under the protection of N2, grinding and screening to obtain SiBNC precursor powder; (2) preparing SiC fibers into a prefabricated part, carrying out hot pressing on the SiBNC precursor powder and SiC fiber prefabricated part, cooling and demolding to obtain a composite material; and transferring into a pipe furnace in an N2 protective atmosphere to perform ceramization, and finally, sintering. The method is simple in technique, easy to operate and low in cost; and the prepared silicon-carbide-fiber-reinforced silicon-boron-nitrogen-carbon composite material is uniform and compact, has the advantages of favorable high-temperature stability and excellent oxidation resistance, and especially has self-healing performance.

The invention discloses a marine detection device convenient for sampling. A fixed collecting plate is welded to the inner side of a mounting pipe, an ascending pipe penetrates through the top end of the fixed collecting plate, an extraction block is placed on the inner side of the ascending pipe, an extraction electric push rod is connected to the top end of the extraction block, a connecting rope is slidably clamped to one end of the inner side of a storage cylinder, and a buoy is connected to one end of the connecting rope. The other end of the connecting rope is connected with a U-shaped clamping plate, and a sealing limiting block is clamped to the inner side of the sliding opening. Sea water is discharged into the storage cylinder through the water outlet pipe, the needle cylinder principle is utilized, the sea water stably enters the storage cylinder, meanwhile, the injection height of the sea water is limited, the situation that the sea water overflows due to the fact that the sea water is injected from the top end is avoided, the service life of the sea water storage device is prolonged, and the service life of the sea water storage device is prolonged. The water inlet is limited through the limiting spring and the sealing limiting block, seawater is prevented from spilling out when the storage barrel moves, and therefore the sealing effect of the storage barrel is guaranteed, internal parts are protected, and the parts are prevented from being soaked in the seawater.

The invention discloses a rectifying and repair structure for an inclined pile foundation, applies to the field of pile foundation repair, and solves the technical problem of complicated operation ofthe pile foundation repair. According to the technical scheme, the rectifying and repair structure for the inclined pile foundation comprises a positioning device, wherein the positioning device comprises a front positioning plate and two side positioning plates in sliding connection with the front positioning plate, and a locking mechanism is arranged between each side positioning plate and the front positioning plate; a straightening device is connected with one side of the positioning device and comprises a hydraulic jack connected with the front positioning plate, the hydraulic jack comprises a cylinder body and a telescopic push rod, and a push plate is connected onto the telescopic push rod; a flow guiding groove allowing slurry to circulate is formed in one side, opposite to the telescopic push rod, of the push plate. The rectifying and repair structure for the inclined pile foundation has technical effect that for operators, the repair work of the pile foundation is simple andeasy to operate.

The invention relates to the field of machining, and particularly relates to a shaft mold surface flaw detection repairing device and a using method. The shaft mold surface flaw detection repairing device comprises a base and a supporting table, and further comprises a controller, a rotating mechanism, a repairing mechanism and a lifting mechanism, wherein the rotating mechanism comprises a driving assembly and two pneumatic claws; the lifting mechanism comprises a lifting plate and a jacking assembly; the repairing mechanism comprises an ultrasonic probe, a polishing assembly and a filling assembly; a camera is mounted at the end, close to the bottom of the supporting table, of a rotating plate; and the camera, the ultrasonic probe, the driving assembly, the jacking assembly, the polishing assembly, the filling assembly and the two pneumatic claws are all electrically connected with the controller. According to the shaft mold surface flaw detection repairing device and the using method, burrs can be removed, cracks and pits can be filled at the same time, manual intervention is not needed in the repairing process, and the repairing efficiency and yield can be improved.

The invention relates to a polyurethane-water glass composite grouting material and a preparation method thereof, which belong to the technical field of construction materials. With lower viscosity and surface tension and high infiltration capability, silane coupling agent utilized by the invention can be rapidly spread on a constructed surface to infiltrate into cracks of a rock surface; meanwhile, inorganic groups in the silane coupling agent can react with oxide on the surfaces of the cracks to generate stable silicon-oxygen bonds, and the organic groups and NCO react to be connected onto organic macromolecules, so that the bonding strength and constructed surface infiltration of the grouting material are improved, meanwhile, a catalyst component is promoted to be uniformly dispersed into water glass, phase separation is prevented, the groutability is good, the permeability is high, and moreover, the polyurethane-water glass composite grouting material has good compressive strength;and the polyurethane-water glass composite grouting material can play the role of filling, reinforcement, waterproofing, leaking stoppage and the like for rock-soil/gravel structures, and is applicable to waterproofing and leaking stoppage for cracks and reinforcement and seepage resistance for foundations in bridges, subways, dams, rock strata, harbors, civil air defence works and the like.

The invention discloses a self-repairing type heat insulation wallboard with a crack reminding function, and belongs to the technical field of heat insulation wallboards. The self-repairing type heat insulation wallboard with the crack reminding function comprises a wall body, a liquid storage cavity is formed in the wall body, a plurality of evenly-distributed conveying pipes are inserted into the wall body, and the conveying pipes penetrate through the liquid storage cavity; supporting partition plates are fixedly connected to the parts, in front of the interior of the liquid storage cavity, of the conveying pipes, and outer wall cracks of the wall body can be self-repaired; foaming agents are sprayed out of the wall according to the principle that the foaming agents expand when encountering air, and the outer wall cracks are rapidly filled; and meanwhile, the inner wall corresponding to the outer wall cracks generates a series of changes, people can be reminded of the condition of the outer wall, people can conveniently observe and maintain the specific position of the cracks, people can further trim the outer wall cracks more timely, the maintenance cost is effectively reduced, and the service life of the outer wall is remarkably prolonged.

The invention discloses an acrylic resin composition which has excellent scratch resistance and friction resistance. Particularly, the scheme adds polytetrafluoroethylene, which has chemical resistance, heat resistance and applicability to occasions with high frictional property requirements, into the traditional acrylic resin paint in the form of nano dimensions, and obtains the acrylic resin paint, which has improved properties and is suitable for industrialization, without changing the original paint processing technique.

The invention discloses a round cake automatic smearing and rotating mechanism which comprises a device box and a motor located in the middle of the top of the device box, the inner top of the device box is provided with a rotating shaft, and the output end of the motor is connected with the rotating shaft penetrating into the device box. And a fixed plate and a driving assembly for quantitatively controlling the cream are assembled outside the rotating shaft. The larger the size of a placing table is, the longer the length of a second connecting rod extending out of a mounting block is, so that when the rotating shaft drives the second connecting rod and an arc-shaped block to rotate, the longer the length of the second connecting rod extending out of the mounting block is, the longer the distance of a connecting ball compressed by the arc-shaped block is, and then the longer the movement distance of a third piston is, namely the more the compressed cream; in conclusion, when the size of the placing table is increased, the amount of the cream extruded by a discharging assembly is also increased, then the change of the amount of the cream of the cakes of various sizes is met, and one device can smear the cream of the cakes of various sizes.

The invention provides moisturizing and skin tendering essence. The moisturizing and skin tendering essence comprises, by weight, 1-100 parts of recombinant fibroin, 1-100 parts of a radix paeoniae alba extract, 1-100 parts of a rhizoma bletillae extract, 1-100 parts of a herba portulacae extract, 1-100 parts of a honeysuckle flower extract, 1-100 parts of a tangerine fruit extract, 1-100 parts of a red clover extract, 1-100 parts of a papaya fruit extract, 1-100 parts of a royal jelly extract and 1-100 parts of a wheat germ extract. The moisturizing and skin tendering essence has excellent moisturizing, moistening, skin tendering, anti-wrinkle, whitening and anti-allergic effects, and can prevent external irritation to the skin and consolidate the curative effect. The invention also provides a preparation method of the moisturizing and skin tendering essence. The moisturizing and skin tendering essence can play a drug effect to the greatest extent, and the moisturizing, skin-tendering and anti-aging curative effects are improved.

The invention provides a detergent detecting and putting device which comprises a liquid storage box and an alarm device. The liquid storage box is provided with at least one storage box capable of storing detergent, and liquid outlets corresponding to the storage boxes are formed in the liquid storage box. The alarm device is used for triggering the alarm device to be started when no detergent exists in the liquid storage box. According to the detergent detecting and putting device, when no detergent exists in the liquid storage box, the alarm device is started to inform a user, the user can fill the liquid storage box in time, and the situation that after the detergent is used up, the normal decontamination effect of a washing machine in influenced, and water and electricity are wasted is avoided.

The invention discloses a concrete pouring device for highway construction, and relates to the technical field of highway construction. The device further comprises a knocking mechanism. Knocking mechanisms are respectively mounted on the bottom plate and the top plate; the knocking mechanism comprises a guide bracket, a crankshaft, a connecting rod, a push rod, a knocking head and a belt pulley; the lower end of each push rod is fixedly connected with a pressure spring; mounting blocks are fixedly connected to the lower ends of the pressure springs; a knocking head is mounted at the lower part of each mounting block; when any one or more knocking heads of the knocking mechanism on the top plate are in contact with the upper end of the template, the knocking heads of the knocking mechanism on the bottom plate are in contact with the rear end face of the template, wherein the positions of the knocking heads are corresponding and the number of the knocking heads is the same. The device has the beneficial effects that bubble discharge in concrete near the formwork can be effectively improved, and the concrete pouring quality is improved.

The invention provides a mining gas extraction hole sealing system, which belongs to the technical field of mining hole sealing, and comprises an inner side bag type plug and an outer side bag type plug, and grouting liquid pipes are arranged in the inner side bag type plug and the outer side bag type plug in a communicating manner; the grouting equipment provides grouting liquid for the inner bag type plug and the outer bag type plug through a grouting liquid pipe; a middle mucus plugging section is formed between the inner-side bag type plugging part and the outer-side bag type plugging part, mucus injection equipment injects mucus into the middle mucus plugging section through a mucus injection pipe, and continuous pressure maintaining is carried out; according to the invention, the two ends are plugged by adopting the bags into which the slurry can be injected, the middle mucus plugging section is formed between the bags at the two ends, the non-solidified mucus is injected into the middle mucus plugging section, and meanwhile, the mucus can be supplemented in time when the pressure of the middle mucus plugging section is reduced so as to keep a certain pressure; therefore, the drilling hole sealing effect is guaranteed, the gas extraction concentration and efficiency are improved, and safe production of a coal mine is guaranteed.

The invention relates to a method for preparing wet-process phosphoric acid by using hydrochloric acid to infiltrate low-and-medium-grade phosphorite. The method includes: directly filling a jamb with low-and-medium-grade phosphorite which is not subjected to flotation; adopting hydrochloric acid infiltration to prepare wet-process phosphoric acid; enabling sulfuric acid to react with leachate to generate ardealite. The objective of directly filling or filling bed holes with ardealite by a pump can be achieved by adopting two different modes for adding sulfuric acid, so that the objectives of fixing mining layers and lowering risk of collapse of mining holes are achieved, and a series of environment problems caused by storage of ardealite are solved. The method has the advantages of mild reaction condition, high yield and high reaction speed, and a series of industrial processes like phosphorite exploitation, beneficiation, transportation and mine hole filling are omitted directly, so that production process is greatly simplified, emission of three wastes is avoided, one-time leaching efficiency of final phosphorus is up to 52.79%, and multiple leaching efficiency can reach higher than 85%.