8results about How to "Aging resistant" patented technology

The invention provides a metal-coated organic silicon elastomer microsphere as well as a preparation method and application thereof, and the preparation method comprises the following steps: performing functional group modification on the surface of the organic silicon elastomer microsphere containing carbon-carbon double bonds and hydroxyl on the surface; the functional groups comprise one or more of primary amino, secondary amino, tertiary amino, carboxyl, sulfydryl, sulfenyl, hydroxyl and carbonyl; and then contacting with an aqueous solution containing metal salt and a reducing agent and carrying out reduction reaction to finish deposition and / or coating of metal on the surfaces of the organic silicon elastomer microspheres. The metal-coated organic silicon elastomer microspheres prepared by the invention are organic silicon elastomer-silver composite microspheres, have the advantages of light weight, high and low temperature resistance, aging resistance, high conductivity, hard shell and soft core, high sphericity and good fluidity, and are greatly reduced in cost; the application in the aspects of conductive coatings, conductive adhesives, low-temperature photovoltaic silver paste, electromagnetic shielding, heat conduction and toughening can be well met.

The utility model discloses an outdoor ecological bullfrog culture pond, which belongs to the technical field of aquaculture, aims to solve the problem of water leakage during use due to insufficient waterproof measures of the outdoor ecological bullfrog culture pond, and comprises a first barrel support and a second barrel support. The two ends of the first barrel support are movably connected with the two ends of the second barrel support through fixing mechanisms respectively, the first barrel support and the second barrel support which are connected form a pond body shell, and a waterproof mechanism is contained in the pond body shell to form a culture pond. The pond body shell and the waterproof mechanism are matched to form the culture pond, the waterproof mechanism can improve waterproof measures of the culture pond, the water leakage phenomenon is reduced in the using process, the applicability of the culture pond is improved, and the service life of the culture pond is prolonged.

The invention relates to the technical field of polymer chemistry, in particular to a water-based acrylic emulsion and a preparation method thereof.The preparation method comprises the following steps that water and an emulsifier A are mixed according to the formula ratio, and a kettle base solution is obtained; dropwise adding the core emulsion and an initiator A solution into the kettle bottom solution, and keeping the temperature at 82-85 DEG C to obtain a first reaction solution; dropwise adding a nucleation emulsion and an initiator B solution into the first reaction solution, and keeping the temperature at 82-85 DEG C to obtain a second reaction solution; and dropwise adding the shell emulsion and the initiator C solution into the second reaction solution at 84-86 DEG C, and carrying out heat preservation at 86-88 DEG C to obtain the water-based acrylic emulsion. The acrylic emulsion with a three-layer core-shell structure is prepared according to the principle of soft inside, medium hard and soft outside, so that the prepared paint surface combines rigidity and softness, is hard and sufficient in toughness, and meets the performance requirements of the finish paint in the water-based automobile coating.

This utility model provides an LED display screen with a novel connection method for a power control box, including a bracket, a power control box, and four LED unit screens. The power control box is located on the back of the bracket, and four electrical plugs are distributed on both sides of the power control box. The four LED unit screens are assembled on the front of the bracket, and each of the four LED unit screens has an electrical socket on its back. The four electrical plugs on both sides of the power control box are respectively plugged into the electrical sockets on the back of the four LED unit screens. In this utility model, the power control box is connected to the electrical sockets on the back of the four LED unit screens through four electrical plugs. Compared with the prior art where the power control box is connected to each LED unit screen one by one using multiple ribbon cables, the electrical plugs and sockets will not crack due to exposure to sunlight, thus having the advantage of aging resistance, thereby enhancing the stability of the connection and ensuring the stability of the entire LED display screen.

The application discloses a sealing mechanism with automatic rotating opening and closing function and belongs to the technical field of cabin sealing structure. The sealing mechanism comprises a cylinder body and sealing assemblies arranged on both sides of the cylinder body. The sealing assembly comprises a baffle, a pressing plate, a rotating pin shaft and an elastic assembly. The elastic assembly is arranged on the baffle and fixedly connected with the cabin at the other end. The baffle is provided with a first connecting sleeve. One end of the pressing plate is sleeved on the first connecting sleeve. The rotating pin shaft is coaxially arranged in the pin shaft through hole of the baffle, the first connecting sleeve and the pressing plate. The locking piece arranged on the side of the pressing plate is fixedly connected with the part of the rotating pin shaft inserted into the pressing plate, so that the pressing plate is fixedly assembled on the baffle. The conductive strip is glued on the arc end surface of the baffle and the pressing plate in contact with the cylinder body. The application realizes the functions of quick sealing and automatic resetting of the sealing mechanism without manual and mechanical actions.

The application discloses a radial lead capacitor fixing seat, which comprises a cup-shaped body with an open upper end for mounting a capacitor, mounting holes arranged on both sides of the cup-shaped body, an auxiliary positioning column inserted into a corresponding through-hole pad on a PCB through the mounting hole and welded and fixed, and a silica gel gasket arranged at the inner bottom of the cup-shaped body, wherein the silica gel gasket and the cup-shaped body are provided with pin holes, and the capacitor pins are inserted into the corresponding through-hole pad on the PCB through the pin holes and welded and fixed. Through the design of the cup-shaped body and the silica gel gasket, part of the vibration of the PCB and the capacitor can be absorbed, the vibration amplitude of the capacitor is reduced, the mounting and welding stress of the capacitor is reduced, and the working stability and service life of the capacitor in the application environment with high vibration and high component density are improved.

The invention relates to the field of concrete waterproof materials, in particular to an inorganic silicon deep permeable crystallization waterproof agent and a preparation process. The invention discloses an inorganic silicon deep permeable crystallization waterproof agent, which is prepared from the following raw materials in parts by mass: 40 to 60 parts of active sodium silicate, 20 to 35 parts of nano composite particles, 10 to 15 parts of aluminate cement, 1 to 3 parts of coagulation accelerator, 5 to 15 parts of dispersing agent, 3 to 5 parts of thickening agent, 0.1 to 0.3 part of preservative and 40 to 65 parts of deionized water. According to the inorganic silicon deep permeable crystallization waterproof agent and the preparation process provided by the invention, the finally prepared waterproof agent not only has excellent waterproof and anti-corrosion properties, but also can further improve the penetration depth, temperature resistance and aging resistance of the inorganic silicon waterproof agent in concrete; therefore, the waterproof agent has good long-term waterproof performance, can adapt to various application environments, and has very excellent application prospects.

The invention provides an inorganic quartzite plate. The inorganic quartzite plate is prepared from the following raw materials in parts by weight: 48-52 parts of quartz sand, 30-40 parts of quartz powder, 6-9 parts of a reinforcing agent, 24-28 parts of cement, 4-6 parts of active powder, 7-10 parts of a water reducing agent, 3-5 parts of a toughening agent, 1-2 parts of an auxiliary agent and 15-18 parts of water. The invention also provides a preparation method of the inorganic quartzite plate. The inorganic quartzite plate provided by the invention has relatively high hardness and relatively good toughness, fracture resistance and water resistance.