76results about How to "Does not cause shedding" patented technology

The invention provides a perovskite type methane combustion catalyst as well as a preparation method and application thereof. The catalyst comprises an active component and a carrier, wherein the active component has a general formula: Al-xA'xB1-yB'yO3; in the formula, A is a rare earth metal element; A' is an alkaline earth metal element; B and B' represent transition metal elements; x is more than or equal to 0 but less than or equal to 0.9; y is more than or equal to 0 but less than or equal to 0.9; the carrier consists of spherical aluminum oxide of at least two crystal phases in delta-Al2O3, theta-Al2O3 or alpha-Al2O3, The aluminum oxide carrier has larger specific surface area, so that the loading capacity of the active component on the carrier can be improved; meanwhile, the uniform dispersion of the active component is facilitated, so that the sintered agglomeration of the active component is prevented, and the service life of the catalyst is prolonged; in addition, the catalyst provided by the invention is good in activity, and the selectivity of the reaction of methane and oxygen for CO2 is high; the perovskite type methane combustion catalyst has the advantages of being low in initiation temperature, high in combustion efficiency, good in mass transfer and heat transfer performance, and the like.

The invention provides a quick-hardening waterproof ceramic tile adhesive which comprises powder and liquid. The powder is prepared from, by weight, high-alumina cement, ordinary Portland cement, gypsum, silica sand, silica fume, a water repellent, a water reducer, coal ash, a water retaining agent, an anti-sagging agent, redispersible powder, a water soluble organic compound early strength agent and an alkyl carboxyl retarder; the liquid is prepared from, by weight, an acrylic emulsion, butylbenzene emulsion, water, a defoaming agent and a corrosion remover. According to the adhesive, the powder is formed by combining the ordinary Portland cement, the high-alumina cement and the gypsum and the liquid formed by combing the acrylic emulsion and the butylbenzene emulsion are matched for use, quick-hardening and waterproof effects of the ceramic tile adhesive can be achieved, and compared with an adhesive only adopting powder, the quick-hardening waterproof ceramic tile adhesive is better in adhesion effect and waterproof effect.

The invention discloses an ionizing radiation degradation method for sea cucumber polysaccharide. The method sequentially comprises the following steps of: 1) completely dissolving the sea cucumber polysaccharide into distilled water to obtain an aqueous solution of the sea cucumber polysaccharide; 2) performing ionizing radiation degradation on the aqueous solution of the sea cucumber polysaccharide at normal temperature by adopting 60 Co, wherein the absorbed dose is 2 to 200kGy; and 3) standing and settling or centrifuging the obtained product in the 2) to remove non-degradable settlement and obtain a clear solution, drying the clear solution, and thus obtaining an oligosaccharide with low molecular weight. The product obtained by adopting the method has uniform and centralized molecular weight, the molecular weight distribution index is close to 1, and the product has good uniformity.

The invention discloses a tubular negative plate of a lead-carbon battery. The negative plate comprises a negative plate grid and filled active substance powder, wherein the negative plate grid is of a fence structure consisting of transverse beams and conductive cores perpendicular to the transverse beams; a sleeve layer is arranged outside the negative plate grid; the gaps among the sleeve layer and the conductive cores is filled with the active substance; the active substances consist of the following substances in percentage by weight: 57-95% of lead powder, 1-40% of a capacitive carbon material, 0.1-0.5% of carbon black, 0.3-2% of barium sulfate, 0-1.2% of sodium lignin sulfonate, 0.5-2% of humic acid, 0.05-0.1% of short fiber. The tubular negative plate of the lead-carbon battery is simple in manufacturing process and easy to realize, a diachylon structure is stabilized and prevented from dropping off, and the service life of the battery is prolonged.

The invention provides a binder for jet printing inks which comprises (A) a polysiloxane, (B) a polyurethane that contains hydrophilic groups, and (C) a water-based medium, and is characterized in that the polysiloxane (A) and the polyurethane (B) together form composite resin particles, and the polysiloxane (A) is thus dispersed in the water-based medium (C) by virtue of the polyurethane (B). A jet printing inks and printed matter are also provided.

The invention provides a multifunctional medical test tube stirring and uniformly-mixing device and relates to the field of medical appliances. The multifunctional medical test tube stirring and uniformly-mixing device is composed of a motor, a multifunctional chain rod, a stirring device and a vibrating and uniformly-mixing device, wherein a retractable stirring rod is mounted on the stirring device; the stirring device can move up and down through a slide way on a baffle plate; and a test tube clamp, a test tube cover and a rotational vibrating cylinder are mounted on the vibrating and uniformly-mixing device. When medical care personnel needs to stir and uniformly mix two or more liquid medicines, the multifunctional test tube stirring and uniformly-mixing device can be used for uniformly mixing the liquid medicines quickly and efficiently, thereby greatly facilitating the work of the medical care personnel.

The invention provides a negative electrode piece of a lithium battery, which comprises a negative current collector and negative active materials coated on the negative current collector; wherein, the surface of the negative current collector consists of a plurality of coated parts and uncoated parts; and the coated parts are separated by the uncoated parts. The invention also provides a method for preparing negative electrodes as well as the lithium battery with the negative electrode piece. The negative electrode piece is well contacted with the electrolyte and the negative active materials are unlikely to drop or get broken during the lithium intercalation and de-intercalation, thus greatly improving the cyclic performance and specific capacity of the lithium batteries with the negative electrode pieces.

The invention provides a preparation method of an eggshell catalyst. A water solution of soluble metal salt is added to a glue solution, an active component precursor solution is prepared and then is used for soaking spherical carriers or sprayed to the spherical carriers, and the eggshell catalyst can be conveniently prepared through drying and calcination. The method adopts a simple process and is convenient to operate. A viscous glue solution in the precursor solution can prevent metal active components from dispersing towards the insides of the carriers, so that metal can be supported on the surfaces of shell layers of the carriers, the utilization rate of the active components is further increased, the catalysis efficiency of the catalyst is improved, and meanwhile, the use amount of metal is reduced; besides, the viscous glue solution can prevent the active components from agglomerating and sintering, the active components are promoted to be highly dispersed on the surfaces of the shell layers of the carriers, and the catalytic activity of the catalyst is improved.

The invention provides a preparation method of an eggshell-shaped deoxidization catalyst. The preparation method comprises the following steps: firstly, immersing or spraying a glue solution to a spherical carrier so as to form a glue layer on the outer part of the spherical carrier; then coating the glue layer with a porous material; drying and roasting to obtain a shell-layer compound carrier; adding a water solution of soluble noble metal salt into the glue solution to prepare a noble metal salt glue solution; then adding a reducing agent water solution into the noble metal salt glue solution to prepare a noble metal active component precursor solution; finally, immersing or spraying the precursor solution to the shell-layer compound carrier; drying and roasting to prepare the eggshell-shaped deoxidization catalyst. According to the preparation method provided by the invention, the precursor solution contains the sticky glue solution and can prevent noble metal active components from being dispersed into the carrier, so that noble metal is loaded on the surface of a shell layer of the carrier as much as possible, and furthermore, the utilization rate of the active components is improved.

The invention discloses a glass carrier. A fixing table is arranged at the top of a base plate, and a mounting groove is formed in the top of the base plate; a rotating motor is fixedly connected intothe mounting groove, and the driving end of the rotating motor penetrates through the mounting groove to be fixedly connected with the bottom of the fixing table; the top of the fixing table is fixedly connected with a first mechanical arm, a second mechanical arm is vertically welded to the end, away from the fixing table, of the first mechanical arm, and the bottom of the second mechanical armis fixedly connected with a hydraulic oil cylinder; and the piston end of the hydraulic oil cylinder is fixedly connected with a connecting plate. According to the glass carrier, two U-shaped clampingplates clamp the two edges of glass, thus another bearing force is increased for the glass, even if suction of a suction cup is not strong, the glass does not fall, and the loss of the economic costis reduced; and a hydraulic rod drives a pressing plate to extrude the glass, thus the glass is further clamped and firmly borne, and the stability is better.

The invention discloses a heat dissipation plate, which comprises a first substrate, a second substrate and support columns, wherein one side of the first substrate is integrally molded with a capillary structure, and the capillary structure is the same as the first substrate in material; the second substrate is arranged at the side, where the capillary structure is arranged, of the first substrate and laminated with the first substrate; and the support columns are formed between the first substrate and the second substrate and enable the first substrate and the second substrate to form an accommodating cavity therebetween. By adopting the above structure, the capillary structure is integrated with the first substrate rather than attached to the first substrate. It is not the combination of two different components through a certain process, but the capillary structure itself is a part of the first substrate, so that the capillary structure does not fall off from the first substrate even if the heat dissipation plate is deformed by force, the capillary force of the capillary structure is ensured, and the heat dissipation effect of the heat dissipation plate is guaranteed. The invention further provides a heat dissipation assembly including the heat dissipation plate, an electronic device including the heat dissipation assembly and a manufacturing method of the heat dissipationplate.

The invention discloses surface treatment fluid for surface treatment of magnesium alloy and aluminum alloy composite parts and a method. The surface treatment fluid comprises inorganic acid, fluoride, a corrosion inhibition film-forming agent and an addition agent. The surface treatment fluid cannot cause the phenomenon that the aluminum alloy portions and the magnesium alloy portions on the composite parts are blackened and excessively corroded. By the adoption of the method of direct forming combination of the magnesium alloy and aluminum alloy composite parts treated by the surface treatment fluid and plastic, the magnesium alloy and aluminum alloy composite parts can be subjected to anodic oxidation in the same surface treatment fluid at the same time under the condition that a covering method and other methods are not used, and therefore uniform holes or a uniform rough surface is generated on the surface, and the magnesium alloy and aluminum alloy composite parts and the plasticare prompted to be subjected to direct injection molding and have the high binding strength. By the adoption of the method, the operating steps of nanometer injection molding of the magnesium alloy and aluminum alloy composite parts are simplified, the cost is reduced, and the production efficiency and the yield are effectively improved.

The invention discloses a flowing-type ground adhesive. The flowing-type ground adhesive is prepared from, by weight, 20-55 parts of cement, 60-70 parts of quartz sand, 0.1-0.7 part of a water reducing agent, 0.2-0.8 part of a water retaining agent, 0.01-0.5 part of an anti-sagging agent and 7-10 parts of redispersible latex powder. According to the flowing-type ground adhesive, by means of organic combination of a mineral gel material and the polymeric redispersible latex powder, the adhesive strength and the rapid hardening performance are improved, and then the material achieves the superior adhesive strength on different base surfaces; under the action of an anti-gliding material, the construction performance is improved, and therefore operation of the adhesive is more convenient; a retarder delays a hydration reaction, and therefore the construction performance of the ceramic tile adhesive material is greatly improved and promoted; the water reducing agent can decrease the blending water dosage and effectively improves the waterproof performance of the ceramic tile adhesive by combining the functions of a water repellent.

The invention discloses a sintering jig and a manufacturing method for electronic components. The manufacturing method for the electronic components comprises the steps of producing blanks and producing outer electrodes on the blanks, wherein the step of producing the outer electrodes on the blanks is carried out in the sintering jig prepared from recrystallized silicon carbide, and the sintering jig is prepared through the following steps: (1) preparing a mixed material which comprises 46-63% of silicon carbide powder of 30-100mesh, 24-45% of silicon carbide powder of 1500-3000mesh, 3-10% of silicon powder of 250-500mesh, 3-8% of carbon powder of 250-500mesh and 2-4% of a binding agent; (2) processing the mixed material into a green; (3) sintering the green to obtain the sintering jig. With the adoption of the manufacturing method disclosed by the invention, the technical problem that the outer electrodes the electronic components are easy to fall off during sintering can be greatly solved, and the production yield and capacity of the electronic components can be improved.

The invention relates to the technical field of building construction, in particular to a waterproof building coiled material repairing device and method. The waterproof building coiled material repairing device comprises a flat cart, a controller, a clamping mechanism, a feeding mechanism and a repairing mechanism; the clamping mechanism comprises a first sleeve column, a second sleeve column and a plurality of elastic abutting assemblies; the feeding mechanism comprises an adjusting assembly and a sliding assembly; the repairing mechanism comprises a hot drying assembly, a traction assembly and a plurality of pressing rollers, the hot drying assembly is located beside a repairing groove, the traction assembly is movably arranged at the bottom of the flat cart, and the multiple pressing rollers are symmetrically arranged on the traction assembly; and the adjusting assembly, the sliding assembly, the hot drying assembly and the traction assembly are electrically connected with the controller. According to the waterproof building coiled material repairing device and method, accurate repairing can be achieved according to the damage area, the adhesion degree is improved, waste is avoided, and cost reduction is facilitated; and meanwhile, the coiled material can be prevented from being damaged, the construction time is saved, and the overall repairing efficiency is improved.

The invention relates to the field of industrial carrying, in particular to an industrial stacking machine for carrying box bodies. The industrial stacking machine comprises a mechanical arm, a motor,a supporting frame, clamping devices, spring barrels, hauling ropes and a control system. The motor is mounted at one end of the mechanical arm, the supporting frame is arranged on the mechanical arm, an output shaft of the motor is connected with the supporting frame, the two clamping devices are symmetrically arranged on the two inner walls of the supporting frame, the spring barrels are arranged at the center position of the top of the supporting frame, the spring barrels are correspondingly connected with positioning plates in the clamping devices through the hauling ropes one by one, andthe control system is arranged on the supporting frame. By means of different rotating angles generated when the multiple positioning plates in the clamping devices make contact with the box bodies,the mechanical arm controls the clamping devices to move to proper positions where the box bodies are grasped, and the problem that the box bodies deviate or rotate can be solved.

The invention discloses an automatic magnetic rapid locking chuck. At least two second radial penetrable holes are formed in a prism hole; at least two first radial penetrable holes are formed in theside wall of a blind hole; the prism hole and the blind hole are formed at one end of a central spindle and communicate with each other; first sliding blocks are slidingly located in the first radialpenetrable holes; second sliding blocks are slidingly located in the second radial penetrable holes; the two ends of the first sliding blocks can stretch out of the first radial penetrable holes without dropping out; the two ends of the second sliding blocks can stretch out of the second radial penetrable holes without dropping out; a magnetic sliding pin can slide by the set distance in the axialdirection so as to be inserted into the blind hole of the central spindle; a first elastic piece provides the sliding pin with elastic force enabling the sliding pin to slide into the prism hole; oneends of the first sliding blocks can stretch into first radial indented groove structures on the side wall of the sliding pin; second radial indented groove structures and third radial indented groove structures are arranged on the inner side wall of an outer sleeve slidingly sleeving the outer side of the central spindle; one ends, facing the outer side of the central spindle, of the first sliding blocks can stretch into the second radial indented groove structures; one ends, facing the outer side of the central spindle, of the second sliding blocks can stretch into the third radial indentedgroove structures; and a second elastic piece provides the outer sleeve with elastic force enabling the outer sleeve to slide in the axial direction of the central spindle to force the first slidingblocks to be separated from second radial grooves and the second sliding blocks to be separated from third radial grooves. A screwdriver head can automatically exit without falling off, and the use issafe.

The invention discloses a high-performance anti-falling cutting pick with a composite assembled structure. The cutting pick comprises a cutting pick shank, a cutting pick head, and a protective fixing sleeve. One end of the cutting pick shank is a fixing end. The other end of the cutting pick shank and the cutting pick head form a taper connection through self-locking. The cutting pick head has an inner taper hole, and the cutting pick shank has an outer taper shank. The protective fixing sleeve and the cutting pick head also form a taper connection through self-locking. The cutting pick head has an outer taper shank, and the protective fixing sleeve has an inner taper hole. The protective fixing sleeve and the cutting pick shank are threadedly connected. With the cutting pick provided by the invention, cutting pick head anti-falling capacity and cutting pick service life can be improved, construction efficiency can be effectively improved, and construction cost can be reduced.

The invention belongs to the technical field of hypersonic wind tunnel test equipment, and discloses a heat storage element for a large-flow high-temperature high-pressure high-speed gas environment. The heat storage element is a metal element which is stacked in the heat storage type heater in a layered mode and used for storing heat and comprises a basic body and a matching block body, the basic body is square grid bodies which are filled in a central cavity of a lining cylinder of the heat storage type heater in a layered mode, and each layer of square grid bodies are arranged in an array mode. The matching block body is a matching grid body which corresponds to the basic body and is suitable for being filled at the edge of a lining cylinder of the heat accumulating type heater; gaps facing incoming flow and penetrating up and down are formed in the basic body and the matching block body, and the gap ratio of the heat storage element is 0.33; the weight of each basic body and each matching block body is greater than or equal to the buoyancy borne by each basic body and each matching block body in a flow field. The heat storage element does not move, does not drop slag, does not float upwards, is convenient to dismount, mount and fix, guarantees the reliability of the heat storage type heater, and improves the cleanliness of test airflow and the quality and efficiency of a wind tunnel test.

The invention provides a preparation method of an eggshell-shaped deoxidization catalyst. The preparation method comprises the following steps: adding a water solution of soluble noble metal salt into a glue solution to prepare a noble metal salt glue solution; then adding a reducing agent water solution into the noble metal salt glue solution to prepare a noble metal active component precursor solution; immersing or spraying the precursor solution to a spherical carrier; drying and roasting to prepare the eggshell-shaped deoxidization catalyst. The method provided by the invention has a simple process and is convenient to operate; the precursor solution contains the sticky glue solution and can prevent noble metal active components from being dispersed into the carrier, so that noble metal is loaded on the surface of a shell layer of the carrier as much as possible, and furthermore, the utilization rate of the active components is improved and the catalysis efficiency of the catalyst is improved; meanwhile, the utilization amount of the noble metal can also be reduced.

The printed circuit board (39) includes wiring (31) for pads, and a solder mask (38) on the wiring (31), openings (37, 36) for placing solder formed in the solder mask (38) ). The wiring (31) includes a rough surface (32) formed by treating with an etchant containing copper complex and organic acid, and a solder resist layer (38) provided on the rough surface (32). In printed circuit boards, tight and firm contact can be obtained in the solder bump formation area between the fine line wiring and the solder mask to prevent damage to the electrical connection.

The invention discloses an ionizing radiation degradation method for sea cucumber polysaccharide. The method sequentially comprises the following steps of: 1) completely dissolving the sea cucumber polysaccharide into distilled water to obtain an aqueous solution of the sea cucumber polysaccharide; 2) performing ionizing radiation degradation on the aqueous solution of the sea cucumber polysaccharide at normal temperature by adopting 60 Co, wherein the absorbed dose is 2 to 200kGy; and 3) standing and settling or centrifuging the obtained product in the 2) to remove non-degradable settlement and obtain a clear solution, drying the clear solution, and thus obtaining an oligosaccharide with low molecular weight. The product obtained by adopting the method has uniform and centralized molecular weight, the molecular weight distribution index is close to 1, and the product has good uniformity.

The invention discloses a brake with a front outage device. The brake with the front outage device comprises a machine shell, a motor and a controller, wherein an upper cam, a lower cam, an upper microswitch and a lower microswitch are arranged on the machine shell, an upper protruding point and a lower protruding point are arranged on the upper cam and the lower cam respectively, and an upper jogging moving contact and a lower jogging moving contact are arranged on the upper microswitch and the lower microswitch respectively. The brake with the front outage device further comprises the front outage device, wherein the front outage device comprises a controller microswitch which is connected with a signal power source of the controller, and a front outage cam which controls the controller microswitch to be turned on and turned off, a front protruding point is arranged on the front outage cam, and can touch the upper jogging moving contact before the upper protruding point touches the upper jogging moving contact, a signal can be sent to the controller to enable the controller to give out a signal in advance, and the signal given out by the controller indicates that the motor is about to be in an outage. The brake with the front outage device can prevent separation of an outer tube on the situation that a limit switch of the motor is out of operation, the motor and a client platform are protected, quality of products is improved, the service life of the products is prolonged, safety of users is ensured, and potential safety hazards are eliminated fundamentally.

The invention discloses a motor with high application stability. The motor comprises a motor shell, wherein a front end cover is arranged at one end of the motor shell, cooling plates are arranged atouter sides of the motor shell at equal distance, and a hanging ring is fixedly arranged at a middle part of a top end of the motor shell by a thread. The motor is scientific and reasonable in structure and is safe and convenient to use; a pull ring, a protection shell, a fixed spring, a protection rubber sleeve and a fixed magnet are arranged; fixed installation and disassembly of the protectionshell are conveniently achieved by the pull ring; a rotation shaft can be effectively prevented from being collided with a foreign matter during the carrying process by the protection shell, and the normal application of the rotation shaft is effectively ensured; the impact applied to the rotation shaft can be effectively reduced by the fixed spring and the protection rubber sleeve when the foreign matter is collided with the protection shell, and the protection on the rotation shaft during the carrying process of the motor is further guaranteed; and a protection assembly can be fixedly installed by the fixed magnet and is prevented from falling off.

The invention relates to anorectal postoperative fixing trousers, which belongs to the technical field of medical treatment. The fixing trousers are convenient and practical, ventilation is better facilitated, the use comfort of a patient is improved, the dressing can be tightly attached to crissum skin, and recovery of the patient is facilitated. A drainage tube can be installed on the fixing trousers through threads and can also be detached from the fixing trousers to be used according to needs. When the drainage tube is used on the day of an operation, a main tube can effectively assist a postoperative patient in exhausting, observing drainage and judging whether bleeding occurs; on the other hand, liquid is injected through the tail portion of a first branch pipe, the balloon at the front end is bulged, the effects of fixing and compression hemostasis are achieved, and primary bleeding of the postoperative high-position wound surface is well prevented; and on the other hand, a second branch pipe is convenient for postoperative flushing and probing, and hemostatics, therapeutic drugs and the like are convenient to perfuse, and then only the sterile dressing is used, the steriledressing is also detachable, the sterile dressing is adhered to the fixed pants body, and the sterile dressing can be replaced as required.

The invention concretely discloses an easy-to-use split traditional Chinese herbal medicine mask, which comprises a mask upper part and a mask lower part, wherein the mask upper part and the mask lower part have an overlapping strip in the middle part of the whole mask; the mask upper part is used for covering the forehead region of the forehead, the nose region of the nose, the face upper regionsat the two sides The mask is made into the split mask and comprises the upper part and the lower part; the upper part and the lower part can be used separately and can also be used at the same time;the use scenes are more diversified; wide market prospects are realized.