5results about How to "Less prone to aging" patented technology

A kind of steel roof eaves wind-resistant structure, it relates to steel roof technical field, including batten board, multiple self-tapping screws and sealing device.Self-tapping screw passes through the opening on batten board and is connected with eaves beam, and compacts roof board;The diameter of opening is larger than the major diameter of screw, and sealing device is arranged in it, including protective sleeve embedded in hole and sealing ring arranged between screw and protective sleeve, sealing ring is expanded and tightly holds screw when screw is compacted and compacts roof board, and sealing is realized.Ring-shaped gasket and its bottom boss, annular groove on screw, and bending protrusion on batten board are arranged.Sealing device is arranged in the inside of opening, and is less affected by ultraviolet rays, rain, temperature difference and the like, has long service life, and is easy to maintain.The utility model improves the wind resistance and long-term sealing stability of roof.

The utility model discloses an armored polyphosphazene insulated power cable, relates to the technical field of insulated power cables, and aims to solve the problems that in the installation, maintenance and replacement processes of a conventional power cable, if misoperation may cause damage to an insulating material, and if the insulating effect is poor, a cable conductor may be in direct contact with the surrounding environment, and the power cable cannot be damaged. Therefore, the conductor is affected with damp, corroded, short-circuited and the like. A cable core comprises wire cores, a filling layer and a steel wire rope reinforcing core, the five wire cores are annularly arranged in the cable core, each wire core comprises a conductor and a composite insulation shielding layer, the conductors are located in the wire cores, the composite insulation shielding layer is arranged in the filling layer, and the composite insulation shielding layer is arranged in the filling layer. A lining layer is arranged on the outer side of the cable core, a composite insulating layer is arranged on the outer side of the lining layer, a steel wire armor layer is arranged on the outer side of the composite insulating layer, and an outer sheath is arranged on the outer side of the steel wire armor layer.

The invention discloses a full-angle sealed image view on-line monitoring device, and relates to the technical field of image transmission monitoring. The full-angle camera shooting device comprises a full-angle camera shooting unit, a mounting arm and a control box, the full-angle camera shooting unit comprises a sealing ball cover, a universal camera and a sealing base, the sealing base and the sealing ball cover are bolted and fixed to form a sealing structure, and the universal camera is arranged in the sealing ball cover and is in sliding fit with the sealing ball cover. Monitoring equipment in the prior art is improved, the universal camera is arranged in the sealing ball cover, meanwhile, the sealing ball cover and the sealing base are arranged to be of a sealing structure, the monitoring equipment can be prevented from being affected by environmental factors during working, and the dustproof and waterproof effects are specifically embodied; wherein the camera adjusting mechanism is arranged in the sealing ball cover, so that the adjusting transmission mechanism can be prevented from being exposed outside the equipment, all components in the equipment are further protected from being damaged by environmental factors, and the service life of the equipment is prolonged.

The invention relates to the technical field of thermal interface materials, in particular to a carbon fiber reinforced heat-conducting phase-change composite material which comprises a carbon fiber felt, a phase-change material, a thermoplastic elastomer, an antioxidant and spherical aluminum oxide. The carbon fiber reinforced heat-conducting phase-change composite material prepared by the method has the advantages of high heat conductivity, high tensile stress, compressibility, high reliability and the like, has no obvious pumping-out and creep problems after being used as a thermal interface material for a long time, and can be applied to the fields of high-power integrated circuit heat dissipation, servers, communication, military industry, aerospace and the like.

This invention discloses a method for preparing silver paste for a mobile phone speaker diaphragm, belonging to the field of mobile phone acoustic component preparation technology. First, a compound binder is placed in a constant-temperature stirrer, and a toughening agent is added. The mixture is stirred for 40-50 minutes at 70-90°C and a stirring speed of 500-510 r / min, resulting in a binder-toughening agent mixture. Next, based on this mixture, a compound solvent is added to adjust the viscosity of the mixture at 25°C to 5000 mPa·s. The viscosity is then measured using an NDJ-1 rotational viscometer at a rotation speed of 60 r / min. The test was conducted under the conditions of / min and shear rate; and after adjustment, the temperature of the mixing system was reduced to 50-60℃, and stirring was continued for 20-30 minutes for curing treatment, and the cured bonding system was output; based on this, the present invention optimizes the entire process of silver paste preparation, adds a special toughening agent to the bonding system, and fully integrates the toughening agent and the binder through constant temperature curing treatment, which effectively improves the brittleness of the silver paste after film formation, and at the same time precisely adjusts the viscosity and thixotropy of the silver paste to adapt to the ultra-thin characteristics of the diaphragm and the application scenarios of high frequency reciprocating vibration.