12results about How to "Blocking pass" patented technology

The invention discloses a quick-drying waterborne epoxy coating and a preparation method thereof, and relates to the field of coatings. When the quick-drying waterborne epoxy coating is prepared, modified cyclotetrasiloxane, 3-aminopropyl methyl dimethoxy silane and quaternized silane are subjected to a reaction, and functional polysiloxane is prepared; the preparation method comprises the following steps: reacting graphene oxide with ethylenediamine and allyl phosphine dichloride to prepare modified graphene; the preparation method comprises the following steps: preparing a component A from modified graphene, functionalized polysiloxane, a defoaming agent, azodiisobutyronitrile and deionized water, taking waterborne epoxy emulsion as a component B, and uniformly mixing the component A and the component B to prepare the quick-drying waterborne epoxy coating. The quick-drying waterborne epoxy coating prepared by the invention has good corrosion resistance, self-repairing performance, flame retardance, antibacterial performance and wear resistance.

The invention belongs to the technical field of thermal insulation materials, and discloses a quartz fiber reinforced phenolic aerogel composite material with a densified surface layer and a preparation method of the quartz fiber reinforced phenolic aerogel composite material. The composite material comprises a densified surface layer and a light inner layer, the densified surface layer takes polycarbosilane modified bismaleimide resin as a matrix and quartz fiber woven cloth as a reinforcement; and the light inner layer takes phenolic aerogel as a matrix and quartz fiber needled felt as a reinforcement body. The preparation method comprises the following steps: connecting the surface layer woven fabric and the inner layer needled felt into a whole through needling, and then sequentially filling the surface layer matrix and the inner layer matrix. The aerogel composite material has the characteristics of ablation resistance, tough surface and heat insulation, the comprehensive density and the comprehensive mechanical property can be regulated and controlled, and the comprehensive requirements of heat insulation, low-speed impact resistance, light weight and certain mechanical strength of a large-area thermal protection structure of the windward side of a hypersonic speed device on the phenolic aerogel composite material can be met.

The utility model discloses a control cubicle cooling and heat dissipation device, a control cubicle and a system, the control cubicle cooling and heat dissipation device comprises a cubicle body and a flow guide plate, the flow guide plate is arranged above the cubicle body, and a set distance exists between the flow guide plate and the top of the cubicle body; the side face of the flow guide plate is a flow guide face which can guide air between the cabinet body and the flow guide plate. The guide plate can prevent sunlight from directly drying the control cubicle, and can guide air to the top of the cubicle body to dissipate heat of the cubicle body, thereby reducing the temperature in the cubicle body.

The utility model discloses a kind of automobile flame-retardant seat cushions, it includes pad body surface layer, the pad body surface layer upper side is connected with backrest, the backrest upper side is connected with headrest, the backrest both sides are symmetrically connected with side pad, the side pad one side is connected with first telescopic belt, the side pad one side is connected with second telescopic belt. Through the above structure, pad body surface layer adopts fireproof fabric, its inside is provided with glass fibre layer, can constitute double flame-retardant barrier, can effectively block flame spread and heat transfer, substantially reduce the risk of seat combustion when vehicle fire, by magic tape wool surface, the cooperation of magic tape prickle surface, collocation antiskid pad, make seat cushion installation firm and dismounting convenient, seat cushion inside is provided with honeycomb layer, can provide excellent breathability and buffering, headrest is connected with neck pillow between backrest, pad body surface layer upper side is provided with backrest, side pad and other ergonomic support, can effectively alleviate fatigue of long time driving, improve ride comfort.

The application provides a box-type transformer substation and power transmission equipment, and belongs to the technical field of power equipment. The box-type transformer substation comprises a box body and a ventilation window. The box body is provided with a window. The ventilation window comprises a plurality of blades arranged at intervals from top to bottom in the window. Each blade can rotate around its own axis. Any two adjacent blades have a ventilation state with a flow gap therebetween and a heat preservation state in which the two blades are lapped to seal the box body. In the heat preservation state, any two adjacent blades are lapped to each other and form a closed heat preservation chamber. The application forms a closed heat preservation chamber by lapping the blades, uses the static air layer in the chamber to achieve efficient heat insulation, guarantees the ventilation and heat dissipation demand in a high-temperature environment, provides reliable heat preservation effect in a low-temperature environment, and is beneficial to improving the environmental adaptability of the box-type transformer substation under severe working conditions.

The utility model belongs to the field of doors and windows, particularly relates to a door and window with heat insulation and heat preservation functions, and aims to solve the problems that indoor temperature is difficult to keep comfortable and stable under extreme weather conditions and living environment quality is affected due to the fact that an existing door and window cannot effectively block indoor and outdoor heat transfer, the following scheme is provided: the door and window comprises a window outer frame, a window inner frame and glass, the inner window frame is hinged to the outer window frame through hinges, the inner window frame is located on the inner ring of the outer window frame, and the three pieces of glass are arranged on the inner ring of the inner window frame; and the heat insulation and preservation assembly is arranged in the window inner frame and used for shielding the glass. Through the arrangement of the heat insulation and preservation assembly, the heat insulation and preservation performance of the door and window is effectively improved, indoor and outdoor heat transfer can be blocked when the weather is hot or cold, the indoor temperature is kept comfortable and stable, and meanwhile operation is easy and convenient, and use is convenient and fast.

The invention discloses a multi-layer co-extrusion optical film and a preparation method thereof, and the film is composed of the following components: a polymer substrate layer which is composed of polyester and polymethyl methacrylate; an ultraviolet barrier film consisting of titanium dioxide and zinc dioxide; a multilayer reflective film formed by alternately stacking a high refractive index material and a low refractive index material; a heat reflective film consisting of a metal reflective material; the super-hydrophobic coating is composed of a fluorinated polymer; and the anti-scraping protective layer is made of a polyurethane material. According to the multi-layer co-extrusion optical thin film, a plurality of functional layers can be simultaneously integrated in the same thin film through a one-time forming process, some technical problems in the traditional thin film production process are effectively solved, and a more efficient, economical and stable solution is provided.

This utility model relates to the field of heat-insulating bearing sleeve technology, specifically a heat-insulating bearing sleeve for a turbocharger, including a bearing sleeve body in the shape of a ring. A heat-insulating layer made of ceramic fiber is installed on one side of the inner wall of the bearing sleeve body. This utility model effectively blocks the large amount of heat generated during turbocharger operation from being transferred to the bearing sleeve through the ceramic fiber heat-insulating layer on the inner wall, preventing damage to bearings and other components due to high temperatures. The nickel-based alloy transition layer between the heat-insulating layer and the bearing sleeve body enhances the bonding strength between the two, ensuring that the heat-insulating layer is not easily detached under long-term high-temperature conditions. Simultaneously, the annular heat dissipation fins on the outer wall of the bearing sleeve body increase the contact area with air, accelerating heat dissipation, and several pressure relief holes can promptly release internal pressure caused by temperature changes, further improving the stability of the bearing sleeve under high-temperature conditions.

The invention discloses a high-strength flame-retardant phenolic aldehyde fireproof thermal insulation integrated board and a preparation method thereof, and belongs to the technical field of building materials. Phenolic resin, modified expanded vermiculite, polyphenyl particles, graphite polyphenyl particles, perlite particles and hexamethylenetetramine are mixed and stirred to obtain a mixture, and the mixture is subjected to hot press molding to obtain a structural layer phenolic board; taking a phenolic aldehyde insulation board as a middle layer, sequentially laying non-woven fabric on the surface of one side of the core material, smearing bonding mortar, attaching a structural layer phenolic aldehyde board, laying alkali-resistant glass fiber mesh cloth, smearing anti-crack mortar, and standing for 15 minutes; laying a non-woven fabric on the other side of the core material according to the same process, coating the non-woven fabric with adhesive mortar, attaching a second structural layer phenolic aldehyde plate, laying an alkali-resistant fiberglass mesh, and coating anti-crack mortar to obtain a prefabricated integrated plate; and standing and curing the prefabricated integrated plate to obtain the integrated plate. The obtained integrated plate has good mechanical property, flame retardant effect and heat preservation performance, and meets the requirement for integration of fire prevention and heat preservation of buildings.

The invention belongs to the technical field of cranes, and discloses a special high-temperature-resistant crane for a copper melting furnace, which comprises a support frame body, a machine body, a main arm, an auxiliary arm and a lifting appliance, the machine body is arranged at the top of the support frame body, the main arm is arranged at the top of the machine body, the auxiliary arm is arranged at one side of the main arm, the lifting appliance is arranged at the bottom of the auxiliary arm, and a telescopic frame body is arranged at one side of the machine body. A reinforcing plate is fixedly installed at the bottom of the telescopic frame body, through cooperation of a threaded rod, a reinforcing rod, an adjusting block, a micro motor, an adjusting plate, an auxiliary arm, a prompt disc and a fluorescent band, after the micro motor is started, the threaded rod in transmission connection with an output shaft of the micro motor is driven to rotate synchronously, and the problem that a crane is not flexible enough in a narrow space is solved; and the back surface of the fluorescent band and the surface of the prompting disc are mutually bonded, and the fluorescent band can emit fluorescent light in a dark environment, so that nearby workers can be reminded of the position of the crane, and injury caused by mistaken collision is avoided.

The invention discloses a pressing moxibustion instrument, which comprises a mounting part, a pressing part, a pressing part, a pressing part, a pressing part, a pressing part and a pressing part, and is characterized in that the mounting part is internally provided with a containing cavity; a containing bin is arranged in the operating part, a moxa cone combustion frame is installed in the containing bin, and the moxa cone combustion frame is axially close to or away from the lining partition relative to the interior of the containing bin; and the ash removal part is rotationally mounted in the operating part, and rotates along with the axial direction of the moxa cone combustion frame close to or far away from the lining partition so as to clean moxa ash on the surface of the lining partition. The lining spacer is mounted in the mounting part to realize axial feeding of the moxa cone and apply pressure to the lining spacer, so that actual moxibustion physiotherapy operation on acupuncture points is completed. When the moxa cone combustion frame moves relative to the lining partition in the axial direction, the ash cleaning piece is driven to clean moxa ash falling off from the lining partition during moxibustion, the situation that the moxa ash remains on the surface of the lining partition and goes out is prevented, and meanwhile the problem of overheating is avoided.

This utility model relates to the field of ceramic fiber heat-resistant board technology, and more particularly to an environmentally friendly ceramic fiber heat-resistant board, comprising a fiber matrix layer, a ceramic fiber board, a reinforcing layer, a ceramic fiber felt, and a surface coating. The fiber matrix layer includes an intermediate layer, with an upper surface layer and a lower surface layer fixedly connected to the upper and lower surfaces of the intermediate layer, respectively. The reinforcing layer, ceramic fiber felt, and ceramic fiber board are sequentially fixedly connected to the upper and lower ends of the fiber matrix layer. The surface coating is applied to the surface of the ceramic fiber board. The reinforcing layer includes a surrounding panel, with mortises on all four inner walls of the surrounding panel, into which tenons are engaged. Transverse reinforcing rods are fixedly connected between corresponding tenons on the left and right sides of the surrounding panel, and longitudinal reinforcing rods are fixedly connected between corresponding tenons on the front and rear sides of the surrounding panel. The unique design of the reinforcing layer of this utility model greatly enhances the overall strength of the board, reduces the risk of deformation and damage, improves the toughness of the board, and effectively blocks heat transfer, meeting the environmental protection requirements of modern society.