在电器制造工業中,最重要的导体材料是铜线,現在也大量采用铅线,用这些导线来制造电机电器繞組,匝间需要有很好的絕緣。最初是用铁丝作为导綫的絕缘(紗包线),但铁维絕緣具有厚度不均、介电性差、繞线易于损坏、制成的电器体积大、原材料消耗多等根本缺点,所以很多年来,都在寻找更好的絕緣导线,后来找到了用天然和合成树脂与植物油制 In the electrical manufacturing industry, the most important conductor material is copper wire, and now a large number of lead wires are also used. These wires are used to make electrical machinery windings and require good insulation between turns. Iron wire was originally used as the wire insulation (Yarn envelope), but Tiewei insulation with uneven thickness, poor dielectric, winding is easy to damage, made of large electrical appliances, raw materials consumption and other fundamental shortcomings, so many years , Are looking for a better insulated wire, and later found a natural and synthetic resin and vegetable oil system