286 results about "Waterproof adhesive tape" patented technology

A hot-air fabric welder for waterproofing tape is invented for selectively welding straight portions and arc portions. The hot-air fabric welder for waterproof tape is comprised of: a lower roller unit including a flat roller portion and a tapered roller portion mounted to the upper end of a support. The lower roller unit is divided into a flat roller body and a tapered roller body for selectively positioning into contact with the upper roller, so that the surface of the lower roller unit contacts the upper roller. A driving means is provided for rotating the lower roller unit. A pivoting means is provided for rotating the support on which the lower roller unit is mounted for selective use of the flat roller portion or the tapered roller portion. A hot-air generating unit is linked to the lower roller unit, driving unit and pivoting unit, and an upper roller is arranged above the lower roller unit.

A detail membrane for bonding together materials of a building envelope includes a reinforced inner core having first and second sides, a tacky, bitumen-based adhesive on the first and second sides of the reinforced inner core, rubber polymers and / or styrene-rubber block copolymers and / or other elastic materials added to the bitumen-based adhesive, wherein the detail membrane either bonds an underside of an exposed cover roofing material to an underlying roofing material on a building envelope, or bonds two like roofing materials together on a building envelope, or replaces caulking, plastic roof cement, mastic or any traditional material used on a sloped roof or the walls of a building exterior. The roofing structure can be roofing, flashing, protrusions through the roof, or walls that abut the roofing structure.

The invention discloses a precast splice comprehensive pipe gallery bell and spigot waterproof structure. The precast splice comprehensive pipe gallery bell and spigot waterproof structure comprises a seam composed of a pipe gallery spigot and a pipe gallery bell. At the seam, waterproof construction bodies composed of a PCM waterproof roll with the thickness of 1.5 mm to 3.0 mm, JS-211 double-component sealants, a polyethylene foam filling plate, an EPDM wedge-shaped sealing ring, a hydrophilic expansion elastic rubber body, a polyethylene foam filling plate, JS-211 double-component sealants and EPIIR self-adhesion waterproof adhesive tape with the thickness of 1.5 mm to 2.0 mm are sequentially arranged from the outer side of the seam to the inner side of the seam. Multiple waterproof guards are constructed, the outer side PCM self-adhesion polymer modified asphalt waterproof roll has the waterproof function, further can prevent plant roots from being punctured and protects the outer seam; double-component sealant cording seams achieve the waterproof and anti-seepage effects; the inner side EPIIR self-adhesion waterproof adhesive tape has the waterproof and anti-seepage functions, further achieves the effects of insect and rat damage prevention effects and mainly plays a role in protecting the inner seam; through the multiple waterproof guards, the waterproof structure is long in service life and can reach 100 years.

The invention relates to an improved technical proposal of an LED display floor structure, wherein four cubes of an identical structure are combined and arranged inside an underframe; each cube is formed by a surface cover and a bottom shell which are buckled up; a fixed die set is arranged inside each cube; the underframe is of an aluminum die-casting integrated structure; the lower part of the underframe is in the shape of a trapezoid; the four edges of the upper bottom of the trapezoid are provided with waterproof grooves; the insides of the waterproof grooves are provided with waterproof adhesive tapes, while waterproof cover boards are arranged on the waterproof grooves; the lower bottom surface of the underframe trapezoid is provided with a reinforcing rib; moreover, the surface cover is colorless and transparent. The improved technical proposal has the advantages that: the structure adopts aluminum die-casting one-step forming technology with the backside provided with the waterproof grooves; therefore, rain water does not filter into the structure on a rainy day and does not cause short circuit and damage on internal electric apparatuses and elements; moreover, an LED die set part also adopts a fully waterproof structure and is made from special high-strength material, thereby having obviously improved bearing power; meanwhile, the level of protection of an entire display floor can reach IP65 grade.

The invention discloses an electrical heating anti-icing assembly with a superhydrophobic property and a preparation method of the electrical heating anti-icing assembly. The anti-icing assembly comprises an insulation heat insulating layer, an electrically heating layer, an insulation heat conduction layer, a heat conduction metal layer, a superhydrophobic coating and waterproof adhesive tape, wherein the insulation heat insulating layer, the electrically heating layer, the insulation heat conduction layer, and the heat conduction metal layer are successively spliced from bottom to top, the superhydrophobic is coated on the surface of the heat conduction metal layer, and the waterproof adhesive tape is sealed around the assembly. The electrical heating anti-icing assembly with the superhydrophobic property has the beneficial effects that the anti-icing assembly has the superhydrophobic property and can remarkably reduce the adhesive strength of a surface ice layer, thus formation of the surface ice layer and removing difficulty of the ice layer can be reduced in a certain level, the ice layer covered on the surface can be removed quickly and completely, heating time is shortened,the removing efficiency of the ice layer is greatly improved, waste of energy is reduced, and great application prospects are provided for equipment such as an airplane in the ice removing field.

The invention relates to an expansion joint and provides a modular expansion device. The modular expansion device comprises two edge beams, wherein the two edge beams are located on two sides of the expansion joint and are opposite to each other. The modular expansion device is characterized by further comprising at least one middle beam and a support beam; the middle beams are successively arranged between the two edge beams along the same direction of the edge beams; the support beam crosses over the expansion joint and is located under the middle beams; the edge beams and the middle beams are supported and mounted on the support beam; two ends of the support beam are respectively fixed on two sides of the expansion joint via a fixed steel ball support seat and a movable pressure-bearing support seat; each middle beam is connected with the edge beam which directly faces the middle beam or the other middle beam via a waterproof adhesive tape. The invention also provides a bridge comprising the expansion device. According to the expansion device, a displacement control system of the expansion device adopts an elastic system, so that the expansion device has certain adaptability to level angle; meanwhile, one end of the support beam is supported by the movable pressure-bearing support seat while the other end of the support beam is supported by the fixed steel ball support seat, so that the support beam can be adapted to the expansion change of the expansion joint and the multidirectional displacement of the expansion device caused by running of automobile wheels.

The invention relates to a confining pressure loading device for laboratory rock strength. The confining pressure loading device comprises a cylindrical drum, the lower end of the drum is fixedly arranged on a bearing seat, a loading cover for closing the drum is arranged on the upper end of the drum, the drum is internally sheathed with a sealing element, the sealing element consists of an upper lantern ring and a lower lantern ring which are connected by upright threads and are symmetrical, the peripheries of the two lantern rings are connected with the inner wall of the drum by threads, waterproof adhesive tapes are arranged on external threads of the two lantern rings, the sealing part is internally provided with a rubber sleeve for wrapping a rock test piece, an interlayer cavity is formed between the rubber sleeve and the inner wall of the drum, and the drum has a through hole which is communicated with the interlayer cavity. The circumferentially evenly distributed confining pressure applied by the confining pressure loading device can ensure uniform distribution of stress to the greatest extent before the rock test piece is damaged, thus the test effectiveness and the reliability of the test results can be improved; on the basis of meeting the laboratory demand, the device is simple in structure, easy for connection components to assemble and disassemble, and good in sealing property.

The invention relates to a method for making a 10KV heat-shrinkable three-core cross-linked polyethylene cable intermediate joint, comprising the following steps: S1, aligning and cutting a cable; S2, stripping an outer sheath layer and an armor; S3, stripping an inner sheath layer and a filler layer; S4, stripping a copper shielding layer and an outer semi-conducting layer; S5, fixing a stress pipe; S6, sleeving pipes; S7, crimping a connecting pipe; S8, wrapping a semi-conducting band; S9, wrapping a filling adhesive tape, S10, fixing a composite pipe; S11, wrapping a waterproof adhesive tape; S12, wrapping a semi-conductive band; S13, installing a three-edged conductive wedge rod; S14, installing a copper shielding net and a ground line; and S15, fixing sealed sheath pipes. For an intermediate joint prepared by the method, the occurrence of tiny cracks or holes is avoided effectively, and the safety factor is improved greatly.

The invention provides a sliding rail type hermetically sealed lithium battery power system. The sliding rail type hermetically sealed lithium battery power system comprises a box body and a sliding rail frame which are mounted in a mutually cooperating way, wherein a plurality of battery modules are arranged in the box body, each battery module comprises an integrated mold and a battery cell arranged on the integrated mold, a bus board is arranged on the integrated mold, a box cover and a high-low pressure connector which are matched with the box body are arranged on the box body respectively, an insulating plate is arranged between the battery modules and the box cover, and a waterproof adhesive tape is arranged on the high-low pressure connector. The sliding rail type hermetically sealed lithium battery power system is low in cost, high in structural strength, good in waterproof performance and easy to mount, and a box can be conveniently changed.

The invention relates to a cable intermediate joint manufacturing method. The outer side of an intermediate joint is sleeved by a first heat shrink tube, the joint of the first heat shrink tube and an outer sheath on a corresponding cable is wrapped by a high-pressure rubber self-adhesive tape, the seal of the interface position between the first heat shrink tube and the corresponding cable is guaranteed, the first heat shrink tube is sleeved by a second heat shrink tube, and two ends of the second heat shrink tube are both covered by high-pressure rubber self-adhesive tapes which exceed two ends of the first heat shrink tube. Compared with the method in the prior art that half-lap-type wound waterproof adhesive tapes are used for waterproofing, the cable intermediate joint manufacturing method is advantaged in that the intermediate joint manufactured by the method has better water resistance and moisture resistance.

The invention discloses a method for grounding a single-core high-voltage cable metal sheath, which comprises the following steps: the cable metal sheath is led to the line inlet end of a grounding box by a coaxial cable; then the grounding end of the grounding box is connected with a grounding belt by a grounding wire; a parallel connection grounding line is also arranged between the grounding box and the grounding belt; one end of the parallel connection grounding line is connected with the original grounding line by a grounding wire clamp, and the other end is connected with the grounding belt by a grounding bolt; and both the grounding wire clamp and the grounding bolt are carried out seal processing by a waterproof adhesive tape. The invention effectively solves the problems of leakage current increase, grounding point heating and power failure overhauling processing on a high-voltage cable, which are caused by grounding point resistance increase because of oxidation and corrosiondue to the damp of the grounding end of the cable line metal sheath erected on a channel, and can be widely applied to the running and the overhauling maintenance of a high-voltage power transmissionline.

The invention discloses a drawing head of a high pressure cross linking cable, which belongs to the field of electric wires, and consists of a draw bar, a guiding cone, a steel sheath, a fastening screw, a waterproof adhesive tape and a thermal shrinkable sleeve; the draw bar is welded on a conductor; the guiding cone is sheathed on the draw bar; the steel sleeve is fixed on a cable body through a screw; the draw bar is welded on the steel sleeve; lead welding is adopted for the steel sleeve and a cable metal sleeve; the waterproof adhesive tape is arranged and wounded on the connection between the steel sleeve and the cable metal sleeve; the thermal shrinkable sleeve is arranged on the steel sleeve. The drawing head of a high pressure cross linking cable drawing head of a high pressure cross linking cable has simple structure, convenient connection, reliable mechanic intensity and waterproof sealing property; jamming of the cable when passing through a pipe is solved, thus is convenient for construction.

The invention discloses a rack type bridge expansion device which comprises racks, an anchoring component, a displacement box, a cross beam, an H-shaped middle beam, an H-shaped lateral beam, a pressure spring I, a support I, a pressure spring II, a support II, a sliding frame and a waterproof adhesive tape, wherein the two ends of the cross beam are pre-pressed in the displacement box through the pressure spring I and the support I; the sliding frame is pre-pressed on the cross beam through the pressure spring II and the support II; the H-shaped lateral beam is integrally fixed with the displacement box; the H-shaped middle beam and the sliding frame are integrally connected through a bolt; the H-shaped middle beam can move by following the sliding of the sliding frame on the cross beam; the racks are arranged in a staggered form; one ends of the racks are pre-pressed on the H-shaped middle beam through the bolts while the other ends are pre-pressed on the H-shaped lateral beam through the bolts. The H-shaped middle beam is in sliding connection with the cross beam through the sliding frame, so that the displacement can be realized by the rack type bridge expansion device. The rack type bridge expansion device has the advantages of stable running, small effect caused by impact force, low cost and strong capability of adapting to three-dimensional deformation of the bridge.

The invention relates to the field of buildings, in particular to an assembly type curtain wall plate. The assembly type curtain wall plate comprises a first connecting mechanism, a curtain wall platebody, an outer frame, a second connecting mechanism, a waterproof adhesive tape, a limiting mechanism and a locking mechanism; by means of connection of the first connecting mechanism and the secondmechanism, two curtain wall can be assembled, and meanwhile strengthening and fixing are conducted; by means of the outer frame, rotating connection of the curtain wall plate body can be achieved, andventilation is facilitated; by means of the waterproof adhesive tape, sealing of closing of the curtain wall plate body can be achieved, the limiting mechanism can achieve the opening angle of the curtain wall plate body, and by means of the locking mechanism, tight closing of the curtain wall plate body can be achieved. Accordingly, by making a limiting block inserted into a limiting groove, initial connection of the curtain wall is achieved; by means of a rotating movable plate, an insertion rod is inserted into a through hole, reinforced connecting between the curtain walls is achieved, the stability of curtain wall connection is improved, the curtain wall plate body is rotated to be opened for ventilation and air exchange, and meanwhile limiting is conducted when the curtain wall plate body is rotated to be opened; fixing is conducted by means of a nut, and the phenomenon that the curtain wall plate body shakes due to wind is avoided.

The invention provides a steel elastomer lattice beam type section steel bridge expansion device. The device comprises two side beams located at both sides of an expansion joint, at least one middle beam and at least two joist beam sets; the middle beams and the joist beam sets are fixedly connected, the two ends of each joist beam set are fixed to the two sides of the expansion joint through a sliding pressure bearing support base and a movable steel ball support base respectively, each middle beam is connected with the side beam exactly opposite to the middle beam or another middle beam through waterproof adhesive tape, gusset plates are vertically fixed below each side beam and below each middle beam, and every two adjacent gusset plates are connected through a steel plate spring elastomer. By means of the device, on the one hand, the multi-directional displacement requirement of a bridge can be met, and the stability and the binding property are very good; on the other hand, the gusset plates are connected by the steel plate spring elastomers, the service life is long, the steel plate spring elastomers jointly decompose the expansion and contraction amount of the bridge, partial horizontal force borne by the middle beams can be balanced, the vertical shear force is transmitted, and the synchronism is good.

A method for adhering waterproof tape is provided and applied to a heating blower. The method includes the steps of: preparing a fabric and a coating that are processed to form a predetermined connecting structure; preparing a waterproof tape that is to be adhered to the connecting structure; setting operation parameters of the heating blower according to a material of the waterproof tape, to allow an operation temperature, an operation air pressure, an operation rolling pressure and an operation rotation speed of the heating blower to have optimal ranges obtained from experiments; and adhering the waterproof tape to the connecting structure by the heating blower operating with the operation temperature, operation air pressure, operation rolling pressure and operation rotation speed thereof, so as to improve an adhesion force of the waterproof tape and a blocking effect thereof against small particles and blood materials to achieve product requirements.

The invention discloses a cable sealing structure of a submerged motor pump. The structure comprises a cable, a cable sealing ring, a gland nut, a cable sealing ring sealing surface and an upper end cover. The cable is sleevedly connected into the cable sealing ring; the cable sealing ring is fixed on the upper end cover by the gland nut; the cable includes a triple-phase line and a grounding wire, wherein the triple-phase line and the grounding wire are respectively sealed on the upper end cover; and a core wire of the triple-phase line is connected with a core wire of a motor lead through a clamping copper tube that is tightly wrapped by a heat-shrink tube and a waterproof adhesive tape. Compared with the prior art, the technology employed in the invention enables the provided cable sealing structure of a submerged motor pump to solve a cable sealing problem; besides, waterproof and moisture proof performances are realized; and it can be avoided that an electric pump motor is damaged due to water inlet or moisture absorption.

The invention discloses a double-sided self-adhesive water-proof adhesive tape, which contains butyl rubber. The water-proof adhesive tape comprises the following components in parts by weight: 30-70 parts of asphalt, 5-25 parts of oil, 2-20 parts of butyl rubber, 2-20 parts of a styrene-butadiene block copolymer, 2-20 parts of an SBRS (Styrene Butadiene Rubber Styrene) modifier, 2-20 parts of a tackifying resin, 2-20 parts of a PE (Poly Ethylene) modifier, 0-20 parts of rubber powder and 10-35 parts of stone dust. The butyl rubber is introduced as a bonding modifier, so that the bonding performance and storage stability of a material are improved greatly. The water-proof adhesive tape can be durably and tightly bonded with fundamental planes such as concrete, cement mortar, metals, plastic, glass, wood and the like, and has excellent physical property, superior high and low temperature resistance, high tensile strength, high adaptability to deformation and cracking of fundamental planes, high water tightness, high air tightness, high chemical performance, high corrosion resistance and high size stability.

The invention discloses an automatic centrifugal dehydrating device. The automatic centrifugal dehydrating device comprises a variable frequency motor, a dehydrating barrel, an inner shell, an outer shell, a single chip, a base and a barrel cover, wherein the inner shell is arranged inside the outer shell; a waterproof adhesive tape is arranged at the connection part between the inner shell and the outer shell; the barrel cover is arranged on the top of the outer shell; the dehydrating barrel is arranged on the inner side of the inner shell; the dehydrating barrel is arranged above the variable frequency motor; the single chip is arranged on one side of the variable frequency motor; a relay module is arranged above the single chip; an alarm device is arranged on the right side of the single chip; a water flow sensor is positioned in the water outlet front end of a water outlet pipe and is horizontally arranged; the relay module is connected with the single chip; the relay module is connected with the variable frequency motor; the alarm device is connected with the single chip; the water flow sensor is connected with the single chip; the bottom of the outer shell is arranged in the base. According to the automatic centrifugal dehydrating device, the trouble caused by manual control for dehydrating is effectively avoided, the dehydrating degree of dehydrated materials can be automatically identified to further judge the dehydrating effect, and thus stop of the variable frequency motor is automatically controlled.

The invention relates to a communication iron tower with a protection function. The communication iron tower comprises a base, a supporting column, a platform and an antenna, and further comprises a rainproof mechanism and an auxiliary mechanism, the rainproof mechanism comprises four rainproof assemblies, each rainproof assembly comprises a telescopic unit and a winding unit, and the auxiliary mechanism comprises an adjusting assembly and a lifting assembly. In the communication iron tower with the protection function, by means of the rainproof mechanism, the rainproof cloth can shield the jumper wire below the antenna and prevent rain, so that the connection position between the jumper wire and the antenna is prevented from being wetted by rainwater, and poor contact between the jumper wire and the antenna is caused, the normal use of the antenna is influenced, the service life of the waterproof adhesive tape is prolonged, so that the sealing waterproof performance of the connectingposition of the jumper wire and the antenna is guaranteed; by means of the auxiliary mechanism, the foundation bolts on the base can be covered and protected in a normal state, and when the iron towerneeds to be maintained, people can be conveniently conveyed from the ground to the platform of the iron tower, the iron tower is convenient and reliable to maintain, and the practicability and reliability of the communication iron tower are greatly improved.

The invention provides a water-saving container plating roof and belongs to the technical field of building roof greening. The water-saving container plating roof is characterized by comprising pool ridges arranged on a building roof, wherein a plurality of trays tightly arranged in a matrix mode are arranged in the pool ridges, and the pool ridges and the trays arranged in the matrix mode form a planting pool. Column-shaped cup plates are arranged in the trays and consist of multiple independent column-shaped cups, and the edges of the cup openings of the column-shaped cups are connected together and are arranged in the matrix mode. The cup openings of the column-shaped cup plates are upward or downward. Water absorbing filter materials are arranged in gaps among the independent column-shaped cups or the column-shaped cups, waterproof adhesive tapes for bonding two side walls are arranged at the upper portions of the side walls of every two adjacent trays, and cladding polyester filtration cotton is arranged at the upper portions of the side walls of the trays tightly attached to the pool ridges. Planting soil is arranged in the area surrounded by the pool ridges. Irrigation pipelines are arranged above the planting pool. The water-saving container plating roof is simple in structure, low in manufacture cost and good in water supply and impoundment performance and has reliable seepage preventing performance.

The invention discloses a plate-type working electrode and a method for manufacturing the same. The electrode comprises a plate-type conductor layer, a polymer conducting film and an adhesive tape layer, wherein the polymer conducting film is adhered to the plate-type conductor layer; and the adhesive tape layer is adhered to one end of the polymer conducting film and is an insulated waterproof adhesive tape. The electrode has a simple structure, is free of toxicity and low in cost, and can be used as the disposable electrode; the electrode can be conveniently integrated in a paper-based analytic system, the detecting operation is quite convenient, the accuracy is high, and the result repeatability between different electrodes is quite good; and the manufacturing method is simple, quick and convenient, and can be easily implemented in common laboratories.

The invention relates to an integrated-type steel structure roof photovoltaic system. The integrated-type steel structure roof photovoltaic system comprises main beams, secondary beams, pieces of angle steel, purlines, supporting blocks, electric weld pieces, assembly frames, pressing blocks, pressing strips, sealants, waterproof adhesive tapes, color steel tiles, lateral cover plates and photovoltaic plates. The secondary beams are vertically erected on the two sides of the main beams correspondingly, the main beams are each in a U shape, and the two sides of the main beams are provided withmain beam shoulders, wherein the directions of the main beam shoulders are inward. Semicircular notches are pressed in the main beam shoulders, and the pieces of angle steel are welded to the outer sides of the bottoms of the main beams correspondingly and connected with the purlines through first screws. The integrated-type steel structure roof photovoltaic system has the beneficial effects thatthe main beams with the U-shaped sections, the inverted-T-shaped supporting blocks and certain compression components are adopted to constitute the integral mounting system, on-site construction is easy and convenient, materials are saved, and the roof water discharge is also greatly increased; and compared with a traditional building photovoltaic integrated system, the main beams are fixed to thepurlines through the pieces of angle steel on the outer side, inner cavities of the main beams do not need to be punched through, and water in the main beams is prevented from entering a building.

The invention relates to the technical field of indoor double-layer window with inward tilt-turn windows and outdoor outswinging casement windows, in particular to an energy-saving double-layer window with inward tilt-turn casement windows and insect prevention anti-theft wire mesh outswinging casement windows. The energy-saving double-layer window comprises the inward tilt-turn windows, the insect prevention anti-theft wire mesh outswinging casement windows, a fixed window, a window frame and a plurality of sealing waterproof adhesive tapes. The inward tilt-turn windows are mounted on the indoor side of the window frame, and the insect prevention anti-theft wire mesh outswinging casement windows are mounted on the outdoor side of the window frame. The upper side, the lower side, the left side and the right side of each inward tilt-turn window are respectively provided with an inwardly-opened cash material. The upper side, the lower side, the left side and the right side of each insect prevention anti-theft wire mesh outswinging casement window are respectively provided with an outwardly-opened cash material. The window frame is generally made of one sort of section material, and the window frame has the two assembling modes with a 90-degree chamfer or a 45-degree chamfer. According to the scheme, the problems that due to the fact that the design of a heat insulation casement window and a screen window in the prior art is in a split type, the appearance can be affected and the anti-theft performance is poor are solved. The energy-saving double-layer window effectively solves the problems that the design of the heat insulation casement window and the screen window in the prior art is in the split type, so that the appearance is affected and the anti-theft performance is poor.

The invention discloses a photovoltaic module packaging system, which comprises a framing mechanism used for mounting a frame on a photovoltaic module; a first turnover mechanism used for turning overthe photovoltaic module provided with the frame, so as to make a back plate of the photovoltaic module to face downwards; an adhesive tape sticking mechanism used for sticking a waterproof adhesive tape to the photovoltaic module overturned by the first overturning mechanism; and a control module used for controlling the framing mechanism, the first turnover mechanism and the adhesive tape sticking mechanism to work. According to the packaging system of the photovoltaic module, full automation of the packaging process is achieved, the production efficiency of the photovoltaic module is improved, large-batch production of the photovoltaic module can be achieved, the labor cost is reduced, and the production stability is improved.

Disclosed is a method of using underwater impact waves to prepare a metal material with a periodic double-peak distribution structure. The method is characterized by including: A), preparing metal substrates (11), a pool (4) with a platform (8) arranged at the bottom, a support (6), a waterproof charge (5), an exploder (3), a cushion layer (7) and a waterproof adhesive tape (10); B), stacking the metal substrates (11), using the cushion layer (7) to support four sides of each metal substrate (11) to form a hollow layer (9) between every two upper-lower metal substrates (11) to obtain a stacked member, using the waterproof adhesive tape (10) to wind and seal the side face of the stacked member to obtain an initial blank, fixing the initial blank on the platform (8), mounting the support (6) on the initial blank, placing the waterproof charge (5) with the exploder (3) on the support (6), and watering the pool (4) until the waterproof charge (5) is completely submerged; C), detonating the waterproof charge (5) to obtain the metal material with the periodic double-peak distribution structure.

The invention discloses an engineering surface for improving underwater bubble locking capacity and a preparation method thereof. The preparation method comprises the steps that a metal or composite is adopted as a matrix; a microstructure with certain roughness is established on the surface through a conventional superhydrophobic surface microstructure establishing method; a designed superhydrophilic region is sealed through a waterproof adhesive tape; then, a sample is modified through a low-surface energy modifier; the adhesive tape prevents low-surface free energy functional groups in themodifier from being in contact with the surface, so that a superhydrophilic characteristic is presented in the region sealed by the adhesive tape, and a superhydrophobic property is presented in a region not sealed by the adhesive tape due to the synergistic effect of the microstructure and the low surface free energy; and finally, the adhesive tape on the surface is removed, the superhydrophobic / superhydrophilic array distribution surface is obtained, and relatively high underwater bubble locking capacity is presented. According to the method provided by the invention, a technology is simple,stability of microbubbles when a superhydrophobic surface is underwater is improved, and the method has important practical meaning for improving industrial application of a superhydrophobic material.

The invention relates to a waterproof adhesive tape for a cable and a preparation method of the waterproof adhesive tape. The waterproof adhesive tape comprises an inner layer and an outer layer, wherein the inner layer is a waterproof layer; the outer layer is a reinforced rib layer; the reinforced rib layer is arranged on the waterproof layer in a thermal binding manner. The adhesive tape provided by the invention adopts a double-layer structure; due to the adoption of the reinforced rib layer, the stretchability of the adhesive tape is effectively improved; due to the adoption of the waterproof layer, adhesive tapes can be combined and dissolved with each other, so that a sealed integral part is formed after a part to be sealed is winded by the sealing waterproof adhesive tapes, and the material used in the waterproof adhesive tape can be used at the temperature of minus 10 DEG C to 200 DEG C.

The invention discloses a rack type bridge expansion device which comprises racks, an anchoring component, a displacement box, a cross beam, an H-shaped middle beam, an H-shaped lateral beam, a pressure spring I, a support I, a pressure spring II, a support II, a sliding frame and a waterproof adhesive tape, wherein the two ends of the cross beam are pre-pressed in the displacement box through the pressure spring I and the support I; the sliding frame is pre-pressed on the cross beam through the pressure spring II and the support II; the H-shaped lateral beam is integrally fixed with the displacement box; the H-shaped middle beam and the sliding frame are integrally connected through a bolt; the H-shaped middle beam can move by following the sliding of the sliding frame on the cross beam; the racks are arranged in a staggered form; one ends of the racks are pre-pressed on the H-shaped middle beam through the bolts while the other ends are pre-pressed on the H-shaped lateral beam through the bolts. The H-shaped middle beam is in sliding connection with the cross beam through the sliding frame, so that the displacement can be realized by the rack type bridge expansion device. The rack type bridge expansion device has the advantages of stable running, small effect caused by impact force, low cost and strong capability of adapting to three-dimensional deformation of the bridge.

The invention discloses a spiral-wound type reverse osmosis membrane element and a water purifier. The spiral-wound type reverse osmosis membrane element comprises a central tube bank, a plurality ofreverse osmosis membrane groups and two end covers, wherein the central tube bank comprises a pure water tube and a plurality of wastewater tubes arranged at intervals around the pure water tube; eachreverse osmosis membrane group penetrates through between the pure water tube and one wastewater tube from one end of the reverse osmosis membrane group and then is folded, and the folded reverse osmosis membrane groups are wound together along the circumferential direction of the pure water tube to the outer sides of the wastewater tubes; the two end covers are separately arranged at one ends ofthe central tube bank and the length direction of the reverse osmosis membrane groups for sealing the end parts of the reverse osmosis membrane groups, at least one of the two end covers communicateswith the central tube bank, and at least one of the two end covers communicates with the wastewater tubes; and one sides, far from the central tube bank, of every adjacent two reverse osmosis membrane groups are bonded by waterproof adhesive tapes. The arrangement of the waterproof adhesive tapes is reduced, a gluing process of the spiral-wound type reverse osmosis membrane element is simplified,and further the production efficiency of the spiral-wound type reverse osmosis membrane element is improved.