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 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 a runner leak stoppage device for a high-head hydrogenerator, belonging to the technical field of hydrogenerators. The runner leak stoppage device for the high-head hydrogenerator has the characteristics that runner leak stoppage is a combined type leak stoppage device; an upper crown and a lower ring of the runner are provided with comb teeth; and a semi-maze type leak stoppage structure is arranged on the joint position of the runner, a top cover and a bottom ring. The device has the advantages of simple structure, convenient use, stable performance, evident leak stoppage effect, smooth runner operation, high generator efficiency and the like.

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.

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.