45results about How to "Improve leakage prevention" patented technology

The invention provides insulation powder coating. The insulation powder coating is in powdered shape. The insulation powder coating is prepared from the following components in parts by weight: 100 parts of solid epoxy resin, 10 to 100 parts of solid organic silicon resin, 1 to 60 parts of latent curing agent, 10 to 100 parts of flame retardant, and 0.1 to 10 parts of accelerant, wherein the epoxy resin comprises bisphenol A epoxy resin, and the latent curing agent comprises multi-amino cage-shaped silsesquioxane. An insulation layer formed by the insulation powder coating is used for substituting the traditional adhesive film, a compact complete protection layer is formed on the overall outer surface of a shell, a pin hole is avoided, the adhesion is good, the insulation powder coating has good insulation performance, electricity leak-proof performance, flame retardance and mechanical performance, and also has good heat conductivity, heat generated by the running of a lithium battery can be released in time. Permanent insulation protection can be provided for the exterior of a metal shell, so that the reliability of the battery is improved. The invention also provides a preparation method and a painting method of the insulation powder coating, and a lithium battery metal shell coated with the insulation powder coating.

The present invention relates to a quick plugging set of pneumatic tools, which is composed of a connector, a steel ball seat and a tailstock, wherein the steel ball seat and the ball head of the connector complete integration through stamping and covering by a friction ring coordinated with a holding groove with thin cladding shape outer end of the steel ball seat, and provide the connector with angle adjustment feature; a prefabricated covering interpolation segment at the rear portion of the connector integrates with the tailstock, a relative ring groove is placed therein, and a bolt hole linking the ring groove is drilled at lateral portion of the tailstock for filling pre-determined number of the steel balls, so as to provide the connector with rotation performance, thus the quick plugging set of pneumatic tools with arbitrary angle adjustment and flexible rotation is made.

The invention discloses environment-friendly conformal coating composition for fluoride-containing circuit boards as well as a preparation method and an application of the environment-friendly conformal coating composition. The conformal coating composition is prepared from 0.1%-30% by mass of a fluorine modified acrylate polymer and 70%-99.9% by mass of a dearomatization solvent, wherein the fluorine modified acrylate polymer is prepared from various specific monomers by copolymerizing in the dearomatization solvent. According to the preparation method, the various specific monomers are subjected to nitrogen replacement in the dearomatization solvent firstly and then stirred for a reaction at 30-120 DEG C in the presence of a polymerization initiator. In terms of the application, the conformal coating can serve as a surface treating agent for treating various printed circuit boards. Compared with fluoroacrylate in the prior art, the conformal coating composition has more remarkable dampproof, waterproof, oilproof, salt spray-proof and anti-creeping effects on the circuit boards, and has the advantages of being environmentally friendly, resistant to hot-cold impact, easy to repairand long in service life as well as excellent and balanced properties.

An improved coupling mechanism for adjacent panels of a sectional door, the panels including facing, adjacent edges; the coupling mechanism including at least one recess formed in or disposed adjacent to the facing edge of each panel, and also including at least one pliable hinge member having a body portion, and expanded regions at each end of the body portion, which are received within and movable within the facing recesses to provide for the relative movement between the facing edges of the panels as the door moves between blocking and unblocking positions.

A supporting structure of a ceramic susceptor is provided, including a ceramic susceptor to be heated having a mounting face and a back face, and a ceramic supporting member joined with the back face of the susceptor. The supporting member has an outer wall surface, and a continuous and integral curved part formed between the outer wall surface and the back face of the susceptor. The curved part has a radius of curvature “R” in a range of 4 mm to 25 mm in the longitudinal direction of the supporting member, and a minimum wall thickness “t” in a range of 1 mm to 15 mm.

The invention discloses a special system for highly-deviated well and horizontal well plunger gas lift. The special system comprises a tubing shoe with a plunger buffering function and a lengthened bendable plunger, wherein the tubing shoe with the plunger buffering function comprises a tubing shoe body and a damping spring, the upper portion of the tubing shoe body is connected with a tubing through an internal thread, the inner wall of the tubing shoe body and the lower end face of the tubing form an upper step surface, a lower step surface is arranged on the lower portion of the tubing shoebody, the damping spring is clamped between the upper step surface and the lower step surface, the lengthened bendable plunger comprises a fishing head, two turbulent seal plungers, a spring and a brush, the special tubing shoe is tripped into a highly-deviated well section or a horizontal section together with the tubing, and the problem of difficulty in feeding an existing plunger clamping device into the highly-deviated well section. The lengthened bendable plunger cannot be limited by a well bore configuration, influence caused by inconsistency of drift diameters of a Christmas tree and the tubing can be reduced by lengthening the plunger, and the plunger has better lost circulation prevention and gas channeling prevention effects as compared with a conventional plunger.

Production of high-strength self-adhesive hung and spreading coiling material of composite water-proof rubber is carried out by preparing non-vulcanized rubber sheet, synthesizing rubber 100, tack producing agent-polyisobutylene 8-10, improver 1.0-1.6 and hydrophilic agent-sodium oleate 2-5 proportionally, cooking, milling, laying aside for 24 hrs, calendaring or extruding into slices, preparing un-vulcanized rubber sheet, synthesizing rubber 100, activator 2.5-5, vulcanizing agent-S1-5 and improver 2-4 proportionally, milling, laying aside for 24 hrs, cooking at 70-80 degree, forming by calendaring stack or extruder, combining, and passing non-woven fabric sheet, vulcanized rubber sheet and non-vulcanized rubber sheet through vulcanizing drum successively to obtain final product. The products consist of non-woven fabric layer, vulcanized rubber layer and non-vulcanized rubber layer. It has better affinity with concrete, penetration resistance and extendibility and no leakage. It can be used for water proofing layer of underground architecture.

The invention belongs to the technical field of improvement of building prefabricated components, and discloses a combined prefabricated shear wall mold assembly and a using method thereof. The mold assembly comprises a pair of end molds and a pair of side molds, wherein the side molds and the end molds are alternately connected and fixed to form a prefabricated shear wall frame, each side mold comprises an upper pressing plate and a lower side mold, and the upper pressing plate is buckled and fixed on the lower side die. According to the technical scheme, the mold assembly has the advantagesof simplicity, convenience and rapidness in operation, good component forming quality and low mold manufacturing cost, the process is simplified, and the production efficiency is improved.

A front structure of a saddle ride type vehicle includes a headlight unit, and a front cowl. The headlight unit includes at least one lens portion. The front cowl includes an annular cowl configured to surround the lens portions, an upper cowl configured to cover at least an upper portion of the annular cowl from the front side, and a wind screen. The edge portion of the upper cowl includes a portion that forms a slit-shaped opening. The annular cowl includes a light-shielding wall extending backward from a rear portion of the upper cowl between the opening and the wind screen.

The invention belongs to the technical field of a roll material for building engineering and discloses a waterproof roll material automatic leakage prevention fixing device and a method for installing waterproof roll material by adopting the waterproof roll material automatic leakage prevention fixing device. The waterproof roll material automatic leakage prevention fixing device has the main technical characteristics of comprising a leakage prevention bowl, wherein a high-water-absorptivity resin filling body or a rubber filling body are arranged in the leakage prevention bowl, an adhesive layer for fixing the high-water-absorptivity resin filling body or the rubber filling body are arranged in the leakage prevention bowl, the adhesive layer is arranged in the leakage prevention bowl and at the edge of the leakage prevention bowl, the leakage prevention bowl is in a round shape, an oval shape, a triangle shape, a rectangular shape or a polygon shape and is provided with a shooting nail preserving groove, the high-water-absorptivity resin filling body or the rubber filling body are arranged the shooting nail preserving groove, and the leakage prevention bowl is provided with the annular convex edge. The waterproof roll material automatic leakage prevention fixing device has the advantages that the waterproof roll material is directly fixed on a base layer via shooting nail passing, when water leakage conditions occur, the high-water-absorptivity resin filling body or the rubber filling body are fully expanded in the leakage prevention bowl, water is prevented from leaking at the shooting nail part, the use is not limited by environment, and the installation of the waterproof roll material is simple and convenient.

The invention discloses a multifunctional headlamp for a tricycle. The multifunctional headlamp comprises a lamp body, an adjusting bolt, a screw, fixator, a lamp line assembly, a headlamp bulb, a rear shell, a reflector, a lamp ring, a lens, a wiring plug-in, a wire, a position lamp bulb and a wire protective tube. The multifunctional headlamp is simple in structure and convenient to mount, the adjusting bolt used for adjusting the light angle is mounted on the headlamp so that the light angle of the headlamp can be adjusted manually, and the effect that a driver has wide view in the driving process is effectively ensured. The position lamp bulb is mounted in the headlamp, does not emit light, just reflects light and is used for reminding other vehicles of the tricycle in front of the vehicles, the warning effect is achieved, and the safety of the tricycle during parking is ensured. The wire protective tube is mounted in the headlamp, used for protecting the internal wire in the headlamp and has the characteristics of the good anticreep performance and high-temperature resistance, the internal wire can be effectively prevented from being damaged due to heat of the headlamp bulb, and the service life of the headlamp is prolonged.

The invention provides an insulating powder coating. The insulating powder coating is in the form of powder and comprises 100 parts by weight of solid epoxy resin, 10-100 parts of solid silicone resin, 1-60 parts of latent curing agent, 10-100 parts of flame retardant and 0.1-10 parts of accelerator, wherein, the epoxy resin includes bisphenol A type epoxy resin, and the latent curing agent includes polyamino cage silsesquioxane. The insulating layer formed by the insulating powder coating of the present invention is used to replace the traditional adhesive film, forming a dense and complete protective layer on the entire outer surface of the shell, without pinholes, good adhesion, excellent insulation, anti-leakage, flame retardant It has excellent performance and mechanical properties, and has good thermal conductivity, which can release the heat generated by the lithium battery in time. It can provide permanent insulation protection for the exterior of the metal case and improve the reliability of the battery. The invention also provides a preparation method and a coating method of the insulating powder coating, and a lithium battery metal case coated with the insulating powder coating.

The invention relates to a shaft seal device comprising a fixing seat, a shaft sleeve, a first friction ring group, a guide assembly and a second friction ring group. The shaft sleeve extends into the fixing seat in a penetrating way; the first friction ring group comprises a first rotating friction ring and a first fixed friction ring which are abutted with each other; the guide assembly comprises an abutting ring, a first positioning ring and a second positioning ring which are embedded into each other, wherein the abutting ring is provided with a plurality of through holes penetrated by a plurality of elastic assemblies; and the second friction ring group comprises a second rotating friction ring and a second fixed friction ring. Each elastic assembly props up the first positioning ring and the second positioning ring so that the first fixed friction ring and the second first fixed friction ring can be respectively attached to and connected with the first rotating friction ring and the second rotating friction ring in a friction compensation way, and better sealing and leakage stopping effect is further provided.

The invention relates to a carbon fiber heating rail connector protection device. The carbon fiber heating rail connector protection device comprises a power line connecting part and a carbon fiber heating bar connecting part connected with the power line connecting part. A wire passing hole penetrating through the power line connecting part in the axial direction of the power line connecting part is formed in the power line connecting part. A connecting hole communicated with the wire passing hole in the axial direction of the carbon fiber heating bar connecting part is formed in the carbon fiber heating bar connecting part. In addition, the carbon fiber heating rail connector protection device is integrally formed through injection molding. According to the carbon fiber heating rail connector protection device, a joint of a power line and a carbon fiber heating bar can be wrapped in the device, a seam in the joint is eliminated, and thus good water-proof, damp-proof and anti-creeping effects are achieved on the joint of the power line and the carbon fiber heating bar.

The invention relates to the technical field of adhesives, in particular to a LED indoor display screen optical protection material and a preparation method thereof. The LED indoor display screen optical protection material is prepared from the following raw materials in parts by weight: 40 to 60 parts of polyester resin, 20 to 40 parts of alkane, 10 to 20 parts of a solvent, 5 to 10 parts of extinction powder, 1 to 3 parts of toner, 1 to 3 parts of a coupling agent and 5 to 10 parts of other auxiliary agents. The LED indoor display screen optical protection material has good high and low temperature resistance, a transparent protective film is formed after the LED indoor display screen optical protection material is cured, a circuit can be protected against damage under the conditions ofvibration, moisture, salt mist, moisture and high temperature, and the LED indoor display screen optical protection material has excellent insulation, moisture prevention, electric leakage prevention,dust prevention, corrosion prevention, aging prevention, mildew prevention, vibration prevention, insulation, corona resistance and the like.

The invention discloses a biological functional inorganic dry powder coating and a preparation method thereof. The biological functional inorganic dry powder coating is characterized by comprising the following components in parts by weight: 30-50 parts of white cement, 0-5 parts of nano titanium dioxide, 10-20 parts of redispersible rubber powder, 1-5 parts of titanium dioxide, 10-20 parts of glass fiber powder, 0.05-0.1 part of cellulose ether, 0.09-0.2 part of a defoaming agent, 0.08-0.1 part of an early strength agent, 0.05-0.1 part of a water reducing agent, 0.5-0.1 part of a retarder, 15-30 parts of packing and 0.3-5 parts of an inorganic pigment. The biological functional inorganic dry powder coating disclosed by the invention meets requirements of related standard provisions, is free of harmful substances such as VOC (volatile organic compounds), benzene and formaldehyde heavy metals, has good environmental-friendliness, and is capable of adsorbing and degrading toxic and harmful gases, purifying air and effectively preventing mold and inhibiting bacteria.

The invention provides a user missort work terminal and a detection method thereof, belonging to the field of detectors. The user missort work terminal includes a casing, the casing is composed of a lower casing and a casing cover, and one edge of the casing cover is movably hinged to one edge of the lower casing. the inside of the casing cover is provided with a manual place, a clamp meter chuck place, and a clamp meter pen holding place, a panel is arranged in the lower casing, and an external power supply interface, a wireless detection switch, a power supply socket, a conversion socket, and a display screen are arranged on the panel. A groove is arranged in the lower casing, and a special clamp meter is arranged in the groove.

The invention discloses a self-repair coating for a mutual inductor and a preparation method thereof. The coating comprises a bottom layer, a middle layer and a surface layer, wherein the bottom layer comprises the following components in parts by weight: 10-20 parts of high temperature vulcanized silicone rubber, 1-3 parts of polyamide, 0.5-1.8 parts of laurate organic tin catalyst and 0.6-1.5 parts of 2-methyl-3-butyne-2-alochol; the middle layer comprises the following components in parts by weight: 5-10 pars of hydrogenated nitrile rubber, 6-12 parts of zinc methacrylate and 0.8-2.2 parts of anti-aging agent; and the surface layer comprises the following components in parts by weight: 35-50 parts of water-borne epoxy resin, 15-25 parts of self-repair agent, 8-17 parts of titanium dioxide and 1-5 parts of perfluoro flatting agent SHYT4320. The coating is safe, environmentally friendly, corrosion-resistant, high temperature resistant, anti-aging and good in self-repair performance; and the preparation method adopts a three-layer coating process, so that the structure of the coating is stable, and the service life of the mutual inductor is prolonged.

Provided is a multi-section leakage-blocking device which comprises an insert rod and a blockage unit. The insert rod comprises an insert section and an exposed section in opposite directions. The blockage unit comprises a first blockage part and a second blockage part, both of which are fixedly arranged in the insert section in the manner of facing the exposed section from the insert section. The first blockage part and the second blockage part are both truncated cones with elasticity. The external diameter of a large-diameter end surface of the second blockage part is larger than that of a large-diameter end surface of the first blockage part.Therefore, when a broken hole is arranged in a liquid storage barrel, the broken hole can be blocked by either of the first blockage part and the second blockage part so that leakage-blocking effect can be better exerted in order to cope with emergencies; and the risk of danger is decreased.

The invention relates to the field of preparation methods of two-component polyester resin, in particular to high-weather-resistance two-component polyester resin for matte sand-streak transfer printing and a preparation method thereof. The preparation method comprises following steps: step one, checking the equipment; step two, feeding step by step; step three, stirring and heating; step four, carrying out preliminary sampling and detection; step five, cooling and feeding; step six, performing heat preservation sampling and detection; step seven, carrying out vacuum sampling and detection; step eight, cooling; step nine, curing and catalyzing; step ten, filtering and crushing; and step eleven, packing the finished product. The preparation method disclosed by the invention has the beneficial effects that by arranging the two-component polyester resin, the high weather resistance of the polyester resin in a matte sand-streak transfer printing process is realized, so that a coating subjected to transfer printing is not pulverized, does not fade and does not fall off in a natural environment for a long term, by adding a curing catalyst, a layer of transparent protective film is formedon the surface of polyester resin, and the polyester resin has excellent insulation, moisture resistance, electric leakage resistance, shock resistance, dust resistance, corrosion resistance, aging resistance, corona resistance and the like.

The invention relates to a thick-film hybrid integrated circuit surface enveloping process which comprises the steps that: a thick-film hybrid integrated circuit is soaked into enveloping liquid by a fixture under the conditions of room temperature and 40 percents to 60 percents humidity, is taken out by the fixture and put into a curing furnace to be dried; the enveloping liquid comprises epoxy-phenolic resin, ethanol and acetone, and the proportion of the weight portions is as follows: epoxy-phenolic resin 100, ethanol 15 to 18, and acetone 15 to 18. The fixture comprises a support (1), a slider (2), a group of fixtures (3) and two limit blocks (4). The thick-film hybrid integrated circuit surface enveloping process has the advantages that: the product for which the enveloping process is adopted has good high temperature and low temperature resistance; a black protective layer is formed on the surface of the product after the product is cured, and the product has excellent insulation, damp-proof, current leakage resistant, anti-shock, dust-proof, anti-corrosive, anti-aging, corona-resistant and other properties, so that the high performance of the thick-film integrated circuit is displayed, and the service life of components which are laminated on the surface can be effectively improved. Because the fixture is adopted, the time can be saved, so that the working efficiency is improved.

The invention discloses elastic permeating glue and a preparation technology thereof. The preparation technology mainly comprises the following steps that 1, Europe imported environmentally-friendly synthesized rubber resin and polyurethane are prepared, and the synthesized rubber resin is poured into a vacuum package barrel; 2, according to a certain ratio, color paste is poured into the vacuum package barrel to modulate the color of the synthesized rubber resin; 3, uniform stirring is carried out inside the vacuum package barrel; 4, a product obtained after uniform stirring is encapsulated and can be subpackaged into small barrels of 100 ml, 200 ml, 300 ml, 400 ml and 500 ml according to needs of clients, wherein the color paste can be red or yellow or blue or white or black, and the color paste can be modulated to be in any color according to a certain proportion. The elastic permeating glue achieves seam permeation, avoids cracking and water leakage, has good adhesion and elasticity without breakage even under vibrating cracking, not to mention seams, will not generate water leakage, is environmentally friendly, and has the properties of ageing resistance and weather fastness.

The invention discloses a stress-adjustable vertical structure LED chip, which sequentially comprises a TiW-based back gold layer, a Si substrate, a bonding layer, a first TiW-based mirror protective layer, an Ag-based mirror layer, and an LED chip from bottom to top. Epitaxial wafer and n electrode layer of Ti / Al / W / Au; LED epitaxial wafer includes n-type doped GaN layer grown on Si substrate, InGaN / GaN quantum well layer grown on n-type doped GaN layer, A p-type doped GaN layer grown on an InGaN / GaN quantum well layer. The invention also provides a preparation method of the stress-adjustable vertical structure LED chip. The vertical structure LED chip of the present invention uses sputtered TiW-based metal as a protective layer, and adjusts the growth stress of the LED epitaxial wafer, the stress released when the growth substrate is peeled off, and the stress released when the transfer substrate is thinned by adjusting the stress of the TiW-based metal. stress, reduce or avoid subsequent adverse effects.

The invention discloses an anti-leakage reinforcing device for an outer coil pipe of a reaction kettle. A reaction kettle body is included. An outer coil pipe heating device is installed on the outer surface of the reaction kettle body, and the outer coil pipe heating device comprises an outer coil pipe body, an outer coil pipe inlet and an outer coil pipe outlet. The outer coil pipe main body is assembled from a plurality of pipelines by welding. Each pipeline sequentially comprises an outer layer, a reinforcing layer and an inner layer from outside to inside, and a plurality of flow limiting plates are mounted on the inner wall of the inner layer. A protective shell is mounted on the outer surface of the outer coil heating device and on the reaction kettle body; a cavity is formed in the protective shell; a plurality of groups of damping blocks are mounted on the two side walls of the cavity; and an elastic piece is fixed between the damping blocks in each group. Supporting legs are mounted at the bottom of the reaction kettle body. The anti-leakage reinforcing device is reasonable in structural design, and can enhance the overall strength of the outer coil pipe, enable the outer coil pipe to bear larger impact and guarantee that the outer coil pipe cannot leak.

The invention provides a kind of degradable sugarcane pulp tableware, which is made of the following materials according to mass percentage: 68-72 parts of sugarcane pulp paper, 28-30 parts of bamboo pulp paper and 3-5 parts of waterproofing agent, and the waterproofing agent is made of agar Agar, propylene glycol alginate, beeswax, xanthan gum and chitin, the mass ratio of the agar, propylene glycol alginate, beeswax, xanthan gum and chitin is 2:5:7:5:3. The tableware is made of degradable material, which has an environmental protection effect, and the product can prevent leakage and high temperature, and has a stable structure.