542results about How to "Effective waterproof" patented technology

A power circuit section including a plurality of bus bars is disposed through an insulation layer on a circuit arrangement surface of a heat radiation member. An end of each of the bus bars is folded up from the circuit arrangement surface to form an external connection terminal. An enclosure wall member that surrounds the power circuit section including the external connection terminal is disposed on the heat radiation member. A connector housing contains an external connection connector that comprises a bottom portion provided with terminal, a through-hole into which the external connection terminal is inserted, and a hood that surrounds the external connection terminal. The external connection connector can be coupled to another connector together with the external connection terminal. A waterproof layer is formed within the enclosure wall member so that at least a part of the power circuit section is sealed and the terminal through-hole is sealed.

Preservative composition for various materials and method of preserving the same is disclosed. The preservative composition includes at least one silane-containing material and at least one hydrocarbon solvent containing molecules of at least five carbon atoms.

The invention relates to a high performance epoxy resin waterproof coating which comprises components A and B, wherein the component A comprises the following raw materials in parts by weight: 95-105 parts of epoxy resin, 10-15 parts of an active diluent, 2-5 parts of a surfactant, 1-2 parts of a defoamer, 1-2 parts of a flatting agent, 2-5 parts of an anti-settling agent, 3-5 parts of a plasticizer and 250-300 parts of functional filler; the component B comprises the following raw materials in parts by weight: 20-30 parts of a modified polyether amine curing agent, 10-20 parts of a modified aliphatic polyamine curing agent and 3-4 parts of a coupling agent. The high performance epoxy resin waterproof coating provided by the invention has considerably high elongation at break, tensile strength and chemical resistance. Experiments verify that the elongation at break of the high performance epoxy resin waterproof coating provided by the invention can reach over 80%, the tensile strength can reach over 12MPa, and the humid substrate bonding strength can reach over 4MPa. The coating which is soaked by an H2SO4 aqueous solution for 15 days is free of cracks, empty bumps and falling.

An electrolyzer assembly includes an electrolysis unit having: a hermetically-sealed case made at least partially from a durable dielectric polymer material, the case having a gas outlet and an electrolyte inlet; at least one set of series-coupled, equally-spaced, rectangular, vertically-oriented metal plates installed within the case, each set having first and second end plates, each plate having each side edge sealed to a case wall panel and a bottom edge sealed to the bottom panel; a ground connection to each first end plate; and a voltage connection to each second end plate that is non-zero with respect to the ground connection, thereby providing at least a 1.5 voltage differential between each pair of adjacent plates when gaps between each adjacent pair of plates are filled with electrolyte.

A water-proof coating system for reflecting solar radiation, which comprises optionally a base layer on a substrate and a reinforcing layer on the base layer; a white reflective and water-proof layer on the substrate or on the reinforcing layer; and a decorative and reflective layer on the white reflective and water-proof layer; wherein the decorative and reflective layer comprises colored infrared-reflective pigments. Water-borne coatings for forming a decorative and reflective layer in the coating system, which comprise acrylic polymers, colored infrared-reflective pigments and UV cross-linking agents. Said coating system can reflect solar radiation with high efficiency and effectively prevent water from penetrating through; has strong stain resistance and good weather resistance; has strong adhesion to various substrates; and also offers diversified colors for choosing. Said water-borne coatings can be applied easily, and are environment friendly.

The invention discloses a packing device of fuel battery electric pile, which comprises the following parts: closed-typed sealing rack to seal all components of fuel battery electric pile in the pack, wherein the sealing rack contains vent hole, ventilator and air pipe inlet, air pipe outlet, hydrogen pipe inlet, hydrogen pipe outlet, cooling pipe inlet, cooling water outlet corresponding to each flow inlet pipe, wherein the hydrogen detector is set in the vent hole, which extends a vent pipe outsides; the vent fan is set on the vent pipe; the ventilator extends a ventilating pipe outsides with aerator on the vent hole. The invention can detect hydrogen density to discharge hydrogen disposal timely, which avoids explosion due to hydrogen pipe cracking.

The invention discloses water-in-oil baby nappy cream which comprises deionized water, glycerin, maleic acid diethyl hexyl acetate, zinc oxide, butanediol, margarine fruit tree butter, 1, 2-pentanediol, tridecyl trimellitate, polydimethylsiloxane, cetyl PEG / PPG-10 / 1 polydimethylsiloxane, sodium lactate, C18-38 alcohol hydroxyl stearoyl stearate, sorbitan sesquioleate, prinsepia utilis seed oil, bisabolol, ginger root extracts, purslane extracts, sodium hyaluronate extracts, sodium hyaluronate, allantoin, tocopheryl acetate, polyhydroxystearic acid, dimethiconol, magnesium sulfate and EDTA (ethylene diamine tetraacetic acid) disodium. The water-in-oil baby nappy cream solves the problems of low-temperature precipitation of water-in-oil cream and difficulty in adding high-content zinc oxide into a cream system, stability of the cream is improved, and baby nappy rash is safely treated. The invention further discloses a preparation method of the water-in-oil baby nappy cream.

The present invention discloses a keyboard which comprises a housing and the following components in the housing: a thin-film circuit, a keyboard frame, a keyboard film and a keyboard base board. The keyboard base board is provided with a plurality of key caps which are adapted with contacts on the thin-film circuit. The keyboard film is provided with inner concave accommodating parts which are respectively adapted with each key cap. The keyboard frame is mounted on the housing through clamping mounting. The keyboard frame is buckled on the key caps and furthermore the keyboard film is pressed to abut against the keyboard base board through the keyboard frame from top to bottom. According to the keyboard of the invention, the keyboard film is buckled on the key caps and furthermore is pressed to abut against the keyboard base board through the keyboard frame from top to bottom. On condition that the keyboard function and the hand feeling do not reduce, a totally waterproof and dustproof function is realized. Furthermore falling-off of the key cap can be prevented thereby ensuring high use safety of the keyboard and obtaining better appearance effect.

The invention relates to a stitched seam structure (1) comprising a first material web (10) having a first barrier layer (42) and a first edge (14) that is on the outer contour of the first material web (10), a second material web (30) having a second barrier layer (42) and a second edge (34) that is on the outer contour of the second material web (30), and at least one seam (21) that joins the first and the second material webs (10, 30) in a seam area (3) thus forming a first seam allowance (13) between the seam (21) and the first edge (14) of the first material web (10) and forming a second seam allowance (33) between the seam (21) and the second edge (34) of the second material web (30). The first and the second material webs (10, 30) are arranged on top of each other in the seam region (3), and the second seam allowance (33) is folded about the first edge (14) of the first material web (10) and covers the at least one seam (21), forming a seam covering (2), said seam covering (2) being joined to the first material web (10) in the seam region (3). Said stitched seam structure can also help to produce water-tight activity clothing which are comfortable to wear.

The invention relates to a preparation method of an environment-friendly dry powder pointing agent taking slag powder as main raw materials, belonging to the technical field of building material preparation processes. The environment-friendly dry powder pointing agent comprises the raw materials in percentage by weight: 55-75 percent of slag powder, 2-10 percent of cement, 10-30 percent of calcite powder, 2-5 percent of re-dispersible emulsoid powder and 0.05-0.3 percent of thickening agent. The environment-friendly dry powder pointing agent has good caking property, good durability and high antiseepage grade, is not in contact with a tapestry brick, generates no cracks, and can effectively inhibit saltpetering. The invention widens a new approach for the resource utilization of the slag powder and has better social efficiency and economic benefit.

The invention discloses an electrical box assembly which comprises an electrical box used for accommodating electrical components, as well as a rear cover and a first fan, wherein at least one first air inlet, at least one first air outlet and at least one window used for allowing a radiator to extend out are formed in the electrical box; at least one second air inlet and at least one second air outlet are formed in the rear cover; the window and the outer side of the first air outlet are covered with the rear cover, and an air duct communicated with the second air inlet and the second air outlet is surrounded by the rear cover and the electrical box; and the first fan is mounted at the second air outlet. According to the electrical box assembly, a double-air-duct design is adopted, the radiating fan is integrated inside the electrical box, and the fan is used for intensively extracting out heat in the electrical box, so that the radiating efficiency of the electrical box is improved, and at the same time, heat radiation of the electrical box is not influenced by the environment and the working condition. The invention further discloses a VRF air-conditioning unit using the electrical box assembly.

The invention relates to an unmanned aerial vehicle for plant protection. The unmanned aerial vehicle for plant protection comprises a center disk, a maintenance end cover and a medicine box, wherein the maintenance end cover and the medicine box are arranged on the center disk; a plurality of mounting holes for being matched with vehicle arms are formed in the center disk; motors and rotors which are connected with rotating shafts of the motors and arranged on the upper portions of the vehicle arms are arranged at the ends of the vehicle arms; a control device is arranged in the center disk and is in signal connection with the motors; the positions, on the lower portions of the rotors, of the bottoms of the vehicle arms are detachably connected with hanging rods connected with nozzles through sleeves; the nozzles communicate with the bottom of the medicine box through a medicine pipe equipped with a medicine pump; buffer gaskets are integrally arranged at the bottom of the medicine box; a limiting nail is fixedly arranged in the position, where the inner walls of the buffer gaskets make contact with the medicine box, of the bottom of the medicine box; the limiting nail is sleeved with a damping spring, and the sharp portion of the limiting nail is arranged downward; and one end of the damping spring is fixedly connected with the medicine box, and the other end of the damping spring is located on the upper portion of the sharp portion of the limiting nail. According to the unmanned aerial vehicle for plant protection, the structure is simple, the design is ingenious, vibration impact in the falling process of the unmanned aerial vehicle can be effectively buffered, and damage to the unmanned aerial vehicle structure is prevented.

Cast and bandage protector that avoids use of a separate sealing ring and therefore can be folded over upon itself, has suitability for convenient packaging and at the same time still provides an effective waterproof sealing arrangement.