7results about How to "Maintain insulation properties" patented technology

The utility model discloses a kick-type temperature controller, which belongs to the technical field of kick-type temperature controllers and comprises a main frame, auxiliary supports are fixed on two sides of the bottom end of the main frame, the main frame comprises a bottom shell frame, pin frames are fixed on two sides of the bottom end of the bottom shell frame, a mounting frame is fixed on the top surface of the bottom shell frame, and the pin frames are fixed on the mounting frame. Mounting holes are formed in the two ends of the mounting frame, and a top shell frame is fixed to the top face of the mounting frame. The kick type temperature controller is composed of the mounting frame, the top shell frame and the outer metal cover, a buffer area can be formed through the gap layer arranged in the metal cover, and when the kick type temperature controller is subjected to external stress, the kick type temperature controller can be matched with the gap layer to form external buffer, so that the internal metal sheet structure cannot be influenced when the outside is pressed and deformed, and the service life of the kick type temperature controller is prolonged. And equidistant supporting rods are annularly distributed on the peripheral edge of the gap layer, so that the structural supporting performance of the outer metal cover body in an extrusion state can be kept, a protection effect is achieved, and the temperature controller structure is kept stable in use.

The invention discloses a preparation method of a corona-resistant polyimide chromium oxide film, and relates to the technical field of high voltage and insulation. The specific preparation method comprises the following steps: (1) preparing modified nano chromium oxide: firstly dispersing chromium oxide nanoparticles, adding an aniline monomer, stirring, then dropwise adding an ammonium persulfate solution, and stirring for reaction to obtain polyaniline-coated chromium oxide nanoparticles; dispersing the polyaniline-coated chromium oxide nanoparticles, adding a silane coupling agent, and stirring to obtain modified chromium oxide nanoparticles; (2) dispersing the modified chromium oxide nano-particles, and adding the dispersed modified chromium oxide nano-particles into the polyimide precursor solution to prepare a mixed solution; and (3) coating a substrate with the mixed solution, and carrying out thermal imidization treatment to obtain the polyimide chromium oxide corona-resistant film. The polyimide chromium oxide corona-resistant film prepared by the invention has relatively long corona-resistant service life and excellent mechanical property, thermal stability and insulating property.

The invention relates to a house building energy-saving roof high-reflection heat-insulation coating and a construction process thereof, the coating comprises a high-reflection heat-insulation main coating formed by curing, and the high-reflection heat-insulation main coating is prepared from raw materials in parts by mass; the colloidal silicon dioxide subjected to surface modification by organosilane is distributed at a contact interface of the borosilicate hollow glass beads and the hydrophobic silicon dioxide aerogel powder and is used for forming an interface bridging unit; the median particle size of the borosilicate hollow glass beads is set to be as follows, the median particle size of the hydrophobic silicon dioxide aerogel powder is set to be as follows, and the average particle size of the colloidal silicon dioxide subjected to surface modification by organosilane is set to be as follows; the mass ratio of the borosilicate hollow glass beads to the hydrophobic silicon dioxide aerogel powder to the colloidal silicon dioxide surface-modified by the organosilane is 1: (0.50-0.75): (0.20-0.32). According to the invention, the interfacial compatibility and dispersion stability of the aerogel particles and the hollow glass beads in a film forming system are improved, and the distribution stability of the functional filler in a coating is improved.

The invention belongs to the technical field of flushing fluid for an electric automobile cooling system, and particularly relates to low-conductivity flushing fluid for the electric automobile cooling system as well as a preparation method and application of the low-conductivity flushing fluid. The flushing fluid is prepared from the following components in parts by mass: 74.04 to 79.88 percent of deionized water, 20 to 25 percent of an alcohol solvent, 0.05 to 0.30 percent of a nonionic surfactant, 0.05 to 0.40 percent of a chelating agent, 0.005 to 0.05 percent of an anticorrosive agent, 0.001 to 0.02 percent of a silicon-based defoaming agent and 0.01 to 0.20 percent of a buffering agent, and the silicon-based defoaming agent exists in the form of a nano dispersion. The invention relates to a nanotechnology low-conductivity flushing fluid which is based on an ethylene glycol solvent system with the same polarity as a cooling liquid and has the advantages of cleaning power, low conductivity, corrosion resistance and foam inhibition.

The utility model discloses an outdoor high -voltage combined mutual -inductor, including metal shell, first conducting rod, second conducting rod and insulating sleeve, the inside of metal shell is provided with voltage transformer and current transformer respectively, and the both ends of metal shell top are provided with first conducting rod respectively, the central position of metal shell top is provided with second conducting rod, and the outside of first conducting rod and second conducting rod all is provided with insulating sleeve, the insulating sleeve is composed of core rod, big umbrella skirt and small umbrella skirt, the big umbrella skirt and small umbrella skirt all are distributed on the core rod, and the surface of big umbrella skirt is evenly provided with water guide groove, the root of big umbrella skirt all is embedded with electric heating wire. The utility model discloses through being provided with metal shell, first conducting rod, second conducting rod, insulating sleeve, big umbrella skirt, small umbrella skirt, core rod, electric heating wire and water guide groove, can effectively avoid the insulation performance decline caused by rainwater, reduces the risk of surface flashover.

The invention relates to a mineral insulated fire-resistant cable, which comprises a joint, and the joint comprises a housing, two ends of which are respectively connected with two adjacent cables through locking members; the cable is connected with the fixing units in an inserted mode, the two fixing units are symmetrically arranged, and a plurality of first contacts are arranged on the fixing units; the isolation execution unit is connected to the outer side of the fixing unit in a sleeving mode, the isolation execution unit is connected with the fixing unit in a sliding mode, second contacts are arranged at the two ends of the isolation execution unit respectively, and when the two adjacent cables are in a conductive state, the first contacts and the second contacts are in a connected state; the trigger unit is connected to the outer side of the isolation execution unit in a sleeving mode, and the trigger unit can drive the isolation execution unit to move, so that the two adjacent cables are located in a power-off device; the anti-springback unit surrounds the inner wall of the shell, the outer wall of the trigger unit is fixedly connected with the anti-springback unit, a groove is formed in the anti-springback unit, and the groove is filled with a high-temperature-resistant material.

The application belongs to the technical field of high polymer materials, and discloses a flame-retardant hydrophobic copolymer nylon material, a preparation method and application thereof. A low steric hindrance short-chain perfluoroalkyl hydrophobic unit (modified with heptafluoro) and a DOPO flame-retardant unit are integrated in a single caprolactam monomer and embedded in a polymer main chain, so that a hydrophobic barrier is constructed to protect the flame-retardant structure from hydrolysis, a stable mechanism of synergistic enhancement of the two is constructed, and a technical bottleneck that the prior art cannot guarantee long-term safety and reliability of the material under high-humidity harsh environment at the same time is overcome.