198results about How to "Good waterproof performance" patented technology

The present invention relates to a wet-stickable self-adhesive water-proof sheet material, its production method and construction method. It is characterized by that said invention uses butyl rubber and high-grade oxidated asphalt, makes them undergo the process of high-temperature mixing treatment, adds acryl water-absorbing resin, operation oil, filler and flow-resisting agent, makes them undergo the process of high-speed dispersion treatment so as to obtain self-adhesive seal water-proof material, dip-coating said self-adhesive seal water-proof material onto one surface of high-molecular water-proof sheet material carrier, then makes the above-mentioned material undergo the processes of calendaring, extruding and layering isolating layer as anti-adhesion layer, then makes a flexible protective layer be stuck on another surface of the above-mentioned high-molecular water-roof sheet material, so that the invented wet-stickable self-adhesive water-proof sheet material can be obtained.

The invention discloses a double-isolating type charge interface structure of a new energy car. The charge interface structure is outstanding in waterproof performance, can effectively prevent the problem that water enters a charge socket during long-term use to influence the normal use of the charge interface of the electric car and reduce the safety of the charging process of the car. The double-isolating type charge interface structure of the new energy car comprises a charge socket arranged on a car body, a charge interface box body which is arranged on an outer plate at the side of the car body and provided with an opening in the upper end, and a charge interface cover; the charge socket comprises a charge socket body, and a socket end cover which is hinged to the charge socket body and used for shielding an upper end port in the charge socket body; an avoiding gap is formed in the bottom surface of the charge opening box body; the upper end of the charge socket body passes through the avoiding gap to be positioned in the charge interface box body; the socket end cover is positioned in the charge interface box body; a first sealing ring is arranged at the side edge of an opening in the upper end of the charge interface box body; an inflating sealing structure is arranged between the charge socket body and the socket end cover.

The invention discloses a knife coating type polyurea waterproof coating comprising a main agent and a curing agent with the mass ratio of 1.0-1.5:1, wherein the main agent is an end NCO-based prepolymer obtained by reacting polyether polyol subjected to vacuum dehydration with polyisocyanate and contains 30-40 percent by weight of polyether glycol and 30-45 percent by weight of diisocyanate, the curing agent is formed by mixing an active hydride, a plasticizer and inorganic fillers subjected to vacuum dehydration with a catalyst, a defoamer and a dispersant disperser and contains 70-95 percent by weight of active substances. The knife coating type polyurea waterproof coating has the solid content of 100 percent, has the advantages of tastelessness, nontoxicity and no pollution in the construction process, and is not influenced by environmental dampness and moisture. A formed film layer has the advantages of excellent mechanical property and weatherability as well as favorable high-low temperature resistance, solvent resistance and corrosion resistance and has favorable bond property with materials such as cement products, steel products, wood products, glass fiber products, and the like.

The invention belongs to the field of water-proofing agents and discloses a fluoroalkyl-modified composite organosilicon water-proofing agent and a preparing method and application thereof. The fluoroalkyl-modified composite organosilicon water-proofing agent is prepared from, by mass, 10-15% of short-carbon-chain alkyl siloxane, 10-15% of long-carbon-chain alkyl siloxane, 40-45% of fluoroalkyl siloxane, 2-3% of complex emulsifier, 2-5% of polyvinyl alcohol, 1-5% of silane coupling agent, 1-3% of aluminum sulfate and the balance water. Short-carbon-chain alkyl siloxane, long-carbon-chain alkyl siloxane and fluoroalkyl siloxane are adopted for being used together to form a composite system, and it is ensured that the water-proofing agent has a good waterproof property and has excellent permeability and weather resistance; the water-proofing agent is W/O/W type pasty, and capable of being widely applied to the waterproof fields of concrete, bricks, mortar and the like, and the antifouling fields of glass and the like, and stability of the water-proofing agent is effectively achieved.

The invention relates to an electrothermal film, and provides a graphene-based waterproof electrothermal film and a preparation method thereof. According to the invention, the problem that the electrothermal film preparation process is not safe and not environmentally-friendly in the prior art is solved. The method comprises the following preparation steps: (1) dispersing graphene into water and mixing with resin emulsion and aids to obtain graphene-based waterborne electrothermal pulp; (2) dipping non-woven fabric into the graphene-based waterborne electrothermal pulp and drying to prepare electrothermal non-woven fabric; (3) adhering conductive copper foils to the two ends of the electrothermal non-woven fabric; (4) covering the upper surface and the lower surface of the electrothermal non-woven fabric, adhered with the conductive copper foils, with polyester plastic films, and hot-sandwiching the electrothermal non-woven fabric in the middle of the polyester plastic films.

The invention discloses a combined steel pile cofferdam provided with a water swellable waterproof rubber fore shaft, which comprises cofferdam pegs and cofferdam long piles used for connecting two adjacent cofferdam pegs. Each cofferdam peg comprises a U-shaped steel sheet pile and a fore shaft sub-part, and the left and right ends of each U-shaped steel sheet pile are respectively and fixedly connected with one fore shaft sub-part. Each cofferdam long pile comprises a steel pipe pile, a fore shaft parent part arranged at the outer side of the steel pipe pile, and a water swellable rubber liner arranged in the fore shaft parent part; a tubular inner cylinder matched with each fore shaft sub-part and a notch connecting the interior of each tubular inner cylinder with the exterior of each tubular inner cylinder are arranged on the fore shaft parent part; each water swellable rubber liner is fixedly arranged on the inner wall of the corresponding tubular inner cylinder; each fore shaft sub-part is sleeved into the corresponding tubular inner cylinder; and bentonite compound filler is filled in a gap between each fore shaft sub-part and each water swellable rubber liner. By taking the combination of a rigid steel pile and a flexible steel pile to have complementary advantages, the combined steel pile cofferdam has good water resistance; the fore shaft is reliable in connection; the material of the combined steel pile cofferdam is easy to obtain; and the combined steel pile cofferdam is strong in integral structural rigidity and low in cost and is quick to construct.

Provides are a novel expanded perlite insulation board and a preparation method thereof. The novel expanded perlite insulation board is mainly prepared by raw materials of 50%-80% of expanded perlite, 10%-40% of inorganic adhesive and organic adhesive, 0%-10% of fiber and 0%-10% of property-modifying additive. The novel expanded perlite insulation board uses a compression molding process and is high in production efficiency, good in size stability and low in production cost. The novel expanded perlite insulation board has excellent fireproofing safety to overcome shortcomings of poor fireproof performance, ageing resistant and environment pollution; and has excellent waterproofness and low thermal coefficients to overcome a shortcoming that a common inorganic insulation material is large in thermal coefficient and strong in water absorbability. The novel expanded perlite insulation board has excellent heat insulation performance, can achieve thermal insulation performance levels of the organic material, simultaneously has non-ignitable performance of the inorganic material, is good in durability and weather fastness, can achieve same service life of buildings, solves the problem that service life of an organic board is short, and is favorable for energy saving and environmental protection. The service life of the organic board can be asynchronous with the building.

The invention discloses a waterproof acid and alkali resistant paint. The waterproof acid and alkali resistant paint is prepared from the following raw materials in parts by weight: 15-40 parts of acrylic emulsion, 3-10 parts of polyurethane, 0.5-5 parts of rosin modified phenolic resin, 0.5-2 parts of triethoxyisobutylsilane, 5-10 parts of filler, 1-5 parts of hydroquinone, 10-30 parts of water, 2-4 parts of methyl isobutyl ketone, 0.5-2 parts of n-butyl acetate, 20-40 parts of heavy calcium carbonate, and 4-11 parts of expanded perlite micro powder. The waterproof acid and alkali resistant paint has acid and alkali resistance, good wear-resisting property, excellent waterproof performance and low cost.

The invention discloses a waterproof paper-plastic compound bag and a preparation method thereof. The waterproof paper-plastic compound bag comprises a plastic layer and a paper layer, wherein the plastic layer is arranged on the surface of the paper layer; the plastic layer comprises starch, polyvinyl alcohol, poly-beta-polyhydroxybutyrate, modified polyacrylate, high density polyethylene, dicumyl peroxide, polyisobutene, polyester fiber, lactose, glycerol, dimethyl phthalate and epoxy resin; the modified polyacrylate comprises a modifying agent and polyacrylate that are mutually compounded; and the modifying agent comprises one or more of organosilicon, organic fluorine and polyurethane. The preparation method of the waterproof paper-plastic compound bag is simple in step, and the raw materials are easy to obtain, so that large-scale industrial production of the waterproof paper-plastic compound bag can be conducted.

The invention relates to a waterproof coiled material containing nano ceramic powder. The waterproof material containing the nano ceramic powder comprises a base material and a waterproof material dip-coated on the base material, the waterproof material comprises the following components in parts by weight: 80 parts of asphalt, 6 parts of nano ceramic powder, 0.3 parts of nano boron oxide, 2 parts of synthetic resin, 0.8 parts of modified starch, 1 part of a fire retardant, 0.2 parts of powder urea, 2 parts of linear polyethylene, 1.2 parts of polyurethane, 0.15 parts of dibutyltin dilaurate, 1.2 parts of swill-cooked dirty oil, 0.05 parts of lithium acetate, 0.5 parts of a stabilizing agent, 0.1 parts of oleamide, 0.8 parts of expandable graphite, 0.2 parts of potassium titanate whiskers, 5 parts of natural rubber powder, 0.6 parts of zinc fatty acid, and 0.5 parts of zirconium silicate powder. During preparation, the waterproof material is fused, and is dip-coated on the base material.

The invention discloses a waterproof coating for water-based paperboards and a preparation method thereof. The coating is mainly prepared from water, an acrylate emulsion, a paraffin emulsion, an epoxy resin, a film forming additive, a flatting agent and other additives. Through the compounding of the paraffin emulsion and the acrylate emulsion, the advantages of the two emulsions are integrated, so that the glossiness, adhesion, abrasion resistance and water repellency of the waterproof coating are maximally increased; due to the addition of the epoxy resin and a drier, the water repellency, coating hardness and surface drying time of the coating can be further improved; and the waterproof coating disclosed by the invention, as a water-based resin coating, is solvent-free, non-toxic, green and environment-friendly in the process of production, and therefore, the waterproof coating has important economical and social benefits.

The invention discloses a driving roller. The driving roller comprises an outer cylinder and an inner cylinder arranged inside the outer cylinder, a motor is fixedly arranged inside the inner cylinder, the output shaft of the motor sleeves with a first rotating piece, and the outer peripheral surface of the first rotating piece is fixedly connected with the inner wall of the outer cylinder in a sealing mode; and the other end of the inner cylinder is provided with a second connecting piece, and the inner cylinder and the outer cylinder are rotationally connected together through the second connecting piece, wherein the second connecting piece is hermetically connected with the inner cylinder and the outer cylinder correspondingly. The driving roller has the beneficial effects that the motor is fixedly arranged inside the inner cylinder in a sealing mode, so that the waterproof performance is good; the inner cylinder and the outer cylinder are enabled to be connected rotationally through the first connecting piece and the second connecting piece, the outer cylinder is sleeved with the shell with spiral blades, when the roller of the robot is in contact with the inner wall or the sludge of the pipeline, friction is carried out by rotating of a spiral roller to the inner wall of the pipeline or the sludge to drive the pipeline robot to move forward, so that the contact area is large, and slipping is avoided; and when the roller of the robot is suspended in water, the spiral roller is equivalent to a propeller, the spiral roller rotates to be drained away water backwards and drives the pipeline robot to move forwards.

This invention involves a kind of response type waterproof coaitng of polymer cement and prepares the method, this waterproof coating, include the aircrew one and there is no aircrew one, there is aircrew one from reacting type polyurethane cream, neighbor benzene two formic acid kinds of plasticizer and organic silicon is it steep pharmaceutical make up, have aircrew copy to made up of white cement and light body calcium carbonate to disapper. While using, the quality matching of one per group is: There are aircrew's shares: Response polyurethane 100 cream, neighbor benzene two formic acid kinds of 5 plasticizer, organic silicon is it steep 5 pharmaceutical to disappear; The weight matching of all raw material is when there is no aircrew one: white cement is 100. light body calcium carbonate is 40. The response type waterproof coating of polymer has already had the intersity of building inorganic material of cement high, able to bear it good advantage, have good high elasticity of high polymer material and waterproof performance.

The invention relates to a modified asphalt waterproofing coiled material with a self-adhering layer and a preparation method thereof and belongs to the technical field of building waterproofing coiled materials. The modified asphalt waterproofing coiled material comprises a polyester base, and an asphalt layer and a self-adhering layer which are formed by the polyester base in a dip-coating manner, wherein the self-adhering layer is prepared from the following ingredients in parts by weight: asphalt 90#, rubber powder, SBS (Styrene Butadiene Styrene block polymer), SBR (Styrene Butadiene Rubber), hydrogenated petroleum resin, naphthenic oil, rock flour, an ultraviolet absorbent and an antioxidant; the asphalt layer is prepared from the following ingredients in parts by weight: asphalt 10#, asphalt 90#, nylon powder, SBS, APP (Ammonium Polyphosphate), PP (polypropylene), cut 3 engine oil and rock flour. The modified asphalt waterproofing coiled material has the advantages of good waterproof performance, ageing resistance, high tensile strength, good extensibility and excellent low-temperature flexibility and heat resistance.

The invention relates to a construction method of a composite unilateral formwork deep foundation pit basement exterior wall. The construction method comprises the steps of: firstly, a composite waterproof layer of the deep foundation pit basement exterior wall is adopted for waterproof treatment of the basement exterior wall; secondly, a basement bottom plate and an outer wall guide wall are poured; thirdly, aiming at different working conditions with limited fertilizer tank space, three different unilateral formwork systems are adopted for carrying out unilateral formwork on the basement exterior wall, and each unilateral formwork system comprises an exterior wall frame opposite-supporting unilateral formwork system, an exterior wall steel pipe fastener inclined-supporting unilateral formwork system and an exterior wall profile steel support inclined-supporting unilateral formwork system; and fourthly, a basement exterior wall is poured. The method the following beneficial effects: aprotection wall adopts segmented prefabricated hoisting rear tenon type waterproof inserting connection to replace a traditional masonry or cast-in-place concrete structure; the construction efficiency is high, and the waterproof performance is good; and meanwhile, adjustable pull-connection pieces connected with the prefabricated protection wall sections are pre-buried in the foundation pit enclosure structure, so that the perpendicularity of the prefabricated protection wall sections is guaranteed, and the construction quality is high.

The invention discloses a double-frequency transmitting monopole antenna for portable high-frequency ground wave radar. The double-frequency transmitting monopole antenna consists of an antenna upper section, a wave trap, an antenna lower section, a feed base and a ground network, wherein a conductor on the antenna upper section is h1 high and a conductor on the antenna lower section is h2 high. When the wavelength lambda 2 corresponding to the radar signal frequency f2 meets a formula of h2=k lambda2/4, the wave trap makes resonance oscillation so as to equivalently isolate the antenna upper section and ensure that the antenna upper section becomes a typical quarter-wave vertical monopole on the ground and has a major lobe of a radiation directional diagram along the ground surface. When the radar signal frequency is far lower than f2, the wave trap is in dissonance, so that the whole height of the antenna is equivalently increased to h3, and therefore the whole antenna forms a quarter-wave monopole with resonance being in lower frequency f1, meets a formula of (h1+h2+h3)=k Lambda 1/4 and has a major lobe of a radiation directional diagram along the ground surface as well. The double-frequency transmitting monopole antenna disclosed by the invention can work on two frequency bands respectively taking f1 and f2 as central frequencies conveniently, and both the two frequency bands have major lobes of directional diagrams along the ground surface. Besides, the adopted feed base realizes favorable waterproof structure design.

The invention provides waterproof waste-stone-powder dry-mixed mortar. A powder waterproof agent and waste stone powder are added into the dry-mixed mortar formula. The waterproof waste-stone-powder dry-mixed mortar comprises, by weight, 28 parts of cement, 16 parts of waste stone powder, 39 parts of sand, 5 parts of powder waterproof agent, 4 parts of redispersible rubble powder, 1 part of polyvinyl alcohol, 1 part of naphthalene water reducer, 4 parts of cellulose fibers and 2 parts of polypropylene fibers; the powder waterproof agent comprises, by mass, 48% of calcium stearate, 35% of zinc stearate, 7% of organosilicone powder water repellent agent and 10% of calcium hydroxide; the waste stone powder is a mixture of one or two of waste marble powder and waste granite powder and comprises, by mass, 35% of waste stone powder with the grain size smaller than 100 microns and 65% of waste stone powder with the grain size of 100-500 microns. According to the dry-mixed mortar, as the powder waterproof agent is added, the waterproof performance is good; as the industrial-waste waste stone powder is added, cost is reduced, and the dry-mixed mortar can be applied to constructional engineering.

The invention discloses a fiber bragg grating osmometer which comprises a shell, a pressure bar, grating and a transmission optical fiber, wherein the shell is provided with a pressure inlet hole and an optical fiber lead hole, and the pressure inlet hole is provided with a filter screen; the shell is provided with a membrane which can directly sense the pressure at the pressure inlet hole; the two ends of the pressure bar are connected with the membrane, the grating is buried inside the pressure bar, and the transmission optical fiber is led out through the optical fiber lead hole. When in use, pore water enters into the osmometer through the pressure inlet hole and acts on the membrane to lead the membrane have deflection deformation; meanwhile, the pore water is transformed into concentrated force and acts on the pressure bar, and external force is applied on the pressure bar to lead the pressure bar to stretch; when the grating is under the pressure, the central wavelength is changed. At this time, a fiber bragg grating demodulation device is used for detecting the central wavelength of the grating, and software can be used for acquiring and storing data, so that osmotic pressure detection can be realized. The fiber bragg grating osmometer has the advantages of high measuring accuracy, small volume, electromagnetic interference resistance, good waterproof performance, capability of long-term monitoring, etc.

The invention relates to aquaculture bivalve offspring seed production, in particular to a method for preventing pinna pectinata larvae from floating upwards and adhering. Two wave-making pumps are arranged in a diagonal shape on the pond wall of a culture pond in a width direction; waves and water flows which are generated by the wave-making pumps are used for dispersing the pinna pectinata larvae so that the pinna pectinata larvae are uniformly distributed in the culture pond, thus the pinna pectinata larvae are prevented from floating upwards and adhering; 24 hours after pinna pectinata fertilized ovums are incubated into D-shaped larvae, when the D-shaped larvae float upwards and are adhered, the wave-making pumps are installed; the proper power of the wave-making pumps is 12-30 W, the proper flow rate is 5-10 m3/h, the proper distance horizontally kept between the water outlet centers of the wave-making pumps and a water surface is 15-25 cm, and the proper distance between the water outlet centers of the wave-making pumps and the adjacent pond wall of the culture pond is 20-40 cm. The invention can reduce upward floating and adhesion ratio matched groups of the pinna pectinata larvae more than 80 percent, enhance the survival rate by 80 percent without obvious adverse effect on the growth of the larvae and achieve the culture density of the larvae by 4-5/ml, thereby effectively enhancing the survival rate and the culture efficiency of the pinna pectinata larvae.

The invention discloses a novel LED (light emitting diode) projection lamp which comprises a rear lamp housing, wherein an opening is formed in the front end of the rear lamp housing; the front end of the rear lamp housing is provided with a front lamp cover in a butting manner, and a lamp cavity is formed in the front lamp cover; a luminous assembly and a reflection cover for reflecting light are arranged in the lamp cavity; the novel LED projection lamp is characterized in that a rainwater temperature control probe for detecting whether raining occurs outside is arranged on the outer wall of the rear lamp housing; an air cooling device is arranged in the lamp cavity outside the reflection cover and comprises an air inlet pipe and an air exhaust pipe which are oppositely arranged on two inner sides of the rear lamp housing and are communicated with the outside; an air suction fan which is connected with the air inlet pipe and is used for blowing external air into the lamp cavity and an air exhaust fan which is connected with the air exhaust pipe and is used for exhausting hot air in the lamp cavity are respectively arranged at the bottom of the rear lamp housing; electromagnetic valves for controlling the air inlet pipe and the air exhaust pipe to be switched on and switched off are arranged in the air inlet pipe and the air exhaust pipe. Due to the arrangement, the novel LED projection lamp is high in heat dissipation performance and waterproofing performance.

The embodiment of the invention discloses a restaurant robot, which includes: a machine base, a tableware placement device, and a shock absorbing device; the tableware placement device includes a placement platform and a collection tank for placing tableware, and the placement platform is provided with hollow part, the tank bottom of the collection tank passes through the hollow part, the tank top of the collection tank expands outwards and is carried on the placement platform, and the outer tank wall of the collection tank and the hollow part There is a gap between the inner walls; the tableware placing device is installed on the base through the cushioning device, the cushioning device includes an elastic member, and the first end of the elastic member is connected to the base , the second end is connected to the placement platform. The restaurant robot disclosed in the embodiment of the present invention solves the technical problems that the restaurant robots currently on the market are not waterproof and shockproof, improves the quality of taking and delivering meals, and improves the use experience of the robot.

The invention discloses a waterproof connector comprising a first terminal module, a second terminal module, and a shielding shell covering the first terminal module and the second terminal module. The first terminal module comprises a first insulating body and a plurality of first terminals which are embedded into the first insulating body. The second terminal module comprises a second insulating body which is inserted and installed into the first insulating body and a plurality of second terminals which are embedded into the second insulating body. The waterproof connector further comprises an injection moulding element which is formed on the outer side of the first terminal module, the second terminal module and the shielding shell through injection moulding after the assembly of the first terminal module, the second terminal module and the shielding shell is completed. The injection moulding element is used to seal joints between the first terminal module and the second terminal module and seal joints between the shielding shell and the first insulating body, so the advantage of good waterproof performance can be realized on the whole. The invention further discloses a manufacturing method of the waterproof connector.

The invention relates to an adhesive for buildings, in particular to cold water fast dissolving rubber powder for buildings. The cold water fast dissolving rubber powder is characterized by mainly comprising the following substances in percentage by weight: 30-60 percent of pre-gelatinized starch, 15-50 percent of cold water fast dissolving polyvinyl alcohol powder and 10-40 percent of hydroxy ethyl cellulose or hydroxypropyl methyl cellulose. During production, the compositions are directly mixed proportionally, stirred uniformly, and packaged. During construction, 30-100 times of water is added for mixing and stirring uniformly. The cold water fast dissolving rubber powder has the advantages of low cost, environmental friendliness, fast dissolubility in cold water, easiness for constructing, high adhesion, increase in adhesion strength and smoothness, and convenience for storing and transporting, can be mixed with cement, talc powder, nature calcium carbonate, gypsum products, water-proof materials and the like or used separately, and has tackifying property and water retention property.

The invention discloses an environment-friendly type common cotton thread detonating cord, relating to the technical field of detonating cords. The environment-friendly type common cotton thread detonating cord comprises a core wire 1, a Taian powder core 2, a detonating cord body 3, a polypropylene flat filament layer 4, a cotton yarn layer 5, a water-proof environment-friendly coating layer 6, an external blasting fuse paper strip layer 7, an outer cotton yarn layer 8, and an outer coating layer 9; the detonating cord adopts the water-proof environment-friendly paint instead of pitch to serve as a moisture-proof coating layer, has good moisture-proof and water-proof properties, is non-toxic and odorless, does not need to be heated, cannot pollute air and environment, and cannot harm the body health of operators; the environment-friendly type common cotton thread detonating cord is innovatively improved based on the common cotton thread detonating cord production process, the environment-friendly type common cotton thread detonating cord is good for the civil explosive industry, the energy is saved, the air is purified, the environment is purified, the body health level of the operators in the civil explosive industry is improved, and the comprehensive economic benefit is remarkable; and the environment-friendly type common cotton thread detonating cord can be widely applied to all the detonating cord production enterprises.

The invention discloses an outer wall waterproof coating. The outer wall waterproof coating is prepared from the following raw materials in parts by weight: 25-35 parts of silicon acrylate emulsion, 25-40 parts of filler, 1-8 parts of film forming additive, 1-5 parts of dispersant, 0.1-0.5 parts of thickener, 0.5-2 parts of flow agent, 1-5 parts of defoamer and 30-40 parts of dedeionized water. The outer wall waterproof coating is strong in the permeability resistance, obvious in the waterproofness, good in weatherability, and strong in acid-resisting, alkali-resisting and corrosion-resisting capability, has stronger high temperature resistance, does not have chemical odor which is harmful to a human body, is simply prepared and is an ideal outer wall waterproof coating.

The invention discloses a touch device, which comprises a shell, a touch module and at least one non-rotary actuator, wherein the touch module is arranged in the shell and provided with at least one touch panel; and the non-rotary actuator is connected with the shell or the touch module. The touch device provided by the invention has an excellent tactile feedback effect and can be used for producing a sound.

The invention relates to an energy-consuming steel rod replaceable beam-column joint node and a construction method thereof, which comprises a frame column, a precast beam, a prestressing tendon, and a laminated floor.A prestressing tendon channel is formed in the prestressing beam; a through tendon channel is formedin the position corresponding to the prestressing tendon channel in the frame column; the prestressing tendon is arranged in the prestressing tendon channel and a through tendon channel; the bottom of the precast beam near the both ends is provided witha connecting component; the connecting component comprises a rectangular box which is enclosed by four vertical side plates and a top plate and a vertical connecting rod connected to the top of the rectangular box; a lower side of the vertical side plate near one side of the frame column is provided with a notch; a connecting channel is formed inthe position corresponding to the notch in the frame column; and an energy-consuming steel rod is worn in the connecting channel. The construction method solves the difficult technical problems, comprising complicated construction of the traditional beam-column joints, the inconvenient installation of the energy-consuming steel bars, the complicated installation of the energy-consuming steel bars in the upper part of the prefabricated beams, the poor integrity of the structural floor panels, the difficulty in waterproofing between the floors, the difficulty in replacing the connected components after the earthquake, and the structural repair after the earthquake.

The invention provides an electric heater, a defroster, an air-conditioning heating system and an automobile. The electric heater comprises a frame and a heater body component in the frame, wherein the heater body component comprises a plurality of heat dissipation bars and a plurality of heating elements, and the heat dissipation bars and the heating elements are arranged side by side at intervals. Each heating element comprises a core tube and a PTC thermistor installed in the core tube, heat conducting silica gel is arranged between each core tube and the adjacent heat dissipation bars, and the core tube and the adjacent heat dissipation bars are bonded through the heat conducting silica gel. The end, used for being connected with a current, of the heater body component is wrapped by a sealing waterproof rubber frame, and the sealing waterproof rubber frame is located in the frame. The waterproof performance can reach the IPX 7 level, and the comprehensive performance such as high voltage resistance and vibration performance is still high.

The invention discloses waterproof coating. The waterproof coating comprises, by weight, 22-35 parts of anhydrous calcium chloride, 1-3 parts of glyoxal, 1-3 parts of sodium dodecyl benzene sulfonate emulsion, 25-40 parts of toluene, 0.5-1.2 parts of dibutyl phthalate, and the balance being water. The waterproof coating is excellent in waterproof performance, pollution-free and low in production cost.

The invention discloses a pipeline supporting device and a mounting method thereof. The pipeline supporting device comprises a support frame base, a support frame body, cement mortar blocks and waterproof sealants; the support frame base is installed on the top surface of a building; the two ends of the support frame body are respectively connected with the support frame base and pipelines; the cement mortar blocks surround the support frame body, and the bottom surfaces of the cement mortar blocks are in contact with the top surface of the building; and the waterproof sealants are connected with the cement mortar blocks, the top surface of the building and the support frame body. The pipeline supporting device also comprises chemical bolts, a waterproof coating and heat insulation bodies; through the chemical bolts, the support frame base is fixedly arranged on the top surface of the building; the waterproof coating is respectively connected with the top surface of the building and the support frame base; the heat insulation bodies are installed at the upper end of the support frame body; and the pipelines are borne on the heat insulation bodies. The pipeline supporting device and the mounting method thereof have the beneficial effects that the waterproof ability of the top surface of the building is enhanced, the transition and the smoothness of heat in the pipelines are ensured, the generation of cold bridge effect is reduced and avoided, the service lives of the pipelines are prolonged, and the potential safety hazards caused by the use of the whole building are reduced.