3results about How to "Ensure insulation" patented technology

The application discloses an environment-friendly flame-retardant master batch for crosslinked polyethylene and a preparation method thereof, and belongs to the technical field of high polymer flame-retardant materials. The flame-retardant master batch is prepared from LLDPE resin as a base material, an aluminum diethyl phosphinate, melamine polyphosphate and modified magnesium hydroxide to form a phosphorus-nitrogen-inorganic ternary synergistic flame-retardant system, the addition of sepiolite which is resistant to high temperature and flame-retardant, the modification of an interface by using a PE-g-MAH compatilizer, and the addition of compounded antioxidants, lubricants and anti-dripping agents, high-speed mixing, three-screw mixing, single-screw extrusion, surface grinding and cutting, magnetic selection and vacuum packaging. The flame-retardant master batch can make the crosslinked polyethylene material reach UL94V-0 grade with 10% of the addition amount, and has the characteristics of low smoke, environmental protection, low release, high mechanical property retention rate and the like, and is suitable for the field of electric wires and cables.

This invention provides a common-mode filter. An exemplary embodiment of the common-mode filter is disposed in a configuration hole in a circuit board including a configuration hole of a predetermined area, comprising: a magnetic core formed into a ring shape using a magnetic material; a plurality of coils wound around the outside of the magnetic core; and a base member coupled to the magnetic core wound with the plurality of coils, and having a plurality of connecting members for electrically connecting the plurality of coils to an external source; wherein a portion of the base member is engaged with the edge side of the configuration hole.

The utility model discloses a composite nanometer heating film which comprises a nanometer heating film body, at least one group of electrodes is arranged on the nanometer heating film body, each group of electrodes at least comprises two electrode strips, the nanometer heating film body is packaged in a mica outer layer, and the mica outer layer is tightly attached to the surface of the nanometer heating film body. According to the utility model, the nanometer heating film body is packaged in the mica outer layer, and the mica outer layer can be coated outside the nanometer heating film body by adopting mica slurry, or mica paper with an attaching layer is attached outside the nanometer heating film body, so that the mica outer layer is attached to the nanometer heating film body, and the thermal conductivity and the insulativity of the nanometer heating film body are ensured.