Application of insulating ceramics in industry
After entering this century, as a result of the insulating ceramics sintering technology, can be sintered under higher temperature than in the past, so used to stick on the outside of our materials, such as pure oxide, carbides, nitrides, silicides, boride, sulfide, etc as main raw materials of ceramics can be sintered ceramics as the basis of modern industrial materials in the application.These ceramics may be called special ceramics, new ceramics or fine ceramics.
Insulation ceramics are fired at 1000℃, due to insufficient sintering, generally have moisture absorption, not suitable for insulation materials;In the flux, such as clay add an appropriate amount of feldspar, at a high temperature above water, at a high temperature of 1200 degrees Celsius, its density and transparency, and earned another name, called porcelain.Porcelain was developed from tableware. With the birth of electronic technology, it was used as insulation material and later became industrial ceramics of metallurgy and chemical ceramics today.
High temperature insulation ceramic coating is usually by solvent or diluent, and auxiliary materials of three parts, according to the scope of use and form can be divided into: dip coating, paint, silicon steel sheet varnish, four types of corona proof paint, since the dry insulating varnish is refers to the Shanghai juji insulation paint dry film, drying mechanism is usually divided into three types: one is a unstable drying, namely high molecular weight solid resin dissolved in a suitable solvent, make a solid film forming resin, insulating paint application is convenient, fast drying, but poor solvent resistance, heat softening, the second is the oxidation drying, insulating paint containing dry vegetable oil, dry vegetable oil unsaturated double bonds in the molecular structure of oxygen in the airUnder the action of oxidation, crosslinking, thus achieving the purpose of drying, oil, phenolic resin and drying oil alkyd resin varnish is oxidation drying insulating varnish.
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