Diamond Dotted Insulation Paper with Stable Electrical and Mechanical Properties
The power insulation material is mainly made of plastic sheet material, and the plastic is a synthetic polymer compound, which can freely change the shape of the body. Plastic is a material obtained by polymerizing a monomer raw material by synthesis or condensation reaction, and is composed of a synthetic resin and a filler, a plasticizer, a stabilizer, a lubricant, a colorant and the like, and its main component is a synthetic resin.
It is used as insulation material for various electrical equipment such as cables and coils, and usually includes capacitor paper, dispensing paper, cable paper, telephone paper, impregnated insulating paper, coiled tube insulating paper, insulated crepe paper tube, and powder mica paper. In addition to good insulation properties and mechanical strength, they also have their own characteristics. For example, capacitor paper thin and bamboo film are made of refined sulfuric acid brine slurry; the surface of the powder mica paper is flashed with metal, which is prepared by calcining and purifying the mica plate.
Dispensing paper is an insulating material in which a special modified epoxy resin is applied in a rhombic shape on an electrical insulating paper. Widely used in interlayer insulation and tantalum insulation of oil-immersed power transformers. In use, the coating begins to melt at a certain temperature during the drying of the coil, resulting in adhesion. Curing begins again as the temperature rises, allowing adjacent layers of the winding to be reliably bonded into a fixed unit. The adhesive strength of the epoxy resin is sufficient to prevent the displacement of the layers of the winding during the short circuit, thereby ensuring the long-term mechanical and electrical properties of the insulating structure.
The diamond dotted paper is coated with special modified epoxy resin in a rhombic shape on high performance insulating paper. It can be used as the turns insulation and interlayer insulation of coil wires of oil-immersed power transformers. Wire-baked baking is sufficient to prevent displacement of the layers of the line resistance, thereby ensuring stable electrical and mechanical properties of the product insulation structure.