Components of Feed and Bath 槽液及加料组份
Solids are consumed during the deposition process. The components used are referred to as feed. Feed consists of a concentrated pigment paste and low-viscosity, milky-colored resin. Feed is delivered to PPG customers as two components for two reasons:
固体份在电沉积过程中被消耗，用作补充的组份称为补加漆料， 补加漆料包括高浓度的颜料浆和低粘度乳白色的树脂。PPG 公司向用户供应双组分补加漆料有以下两个原因：
The addition ratios of paste and resin can be varied to modify the coating characteristics required by local operating conditions.
颜料浆与树脂的加料比例可以根据用户的工艺操作所需及涂膜特性的特别要求而加以调整。
Pigment paste is usually delivered at a higher viscosity than the resin. If the paste were pre-blended with resin, the local operator might experience difficulty with settling because of reduced viscosity caused by the resin.
颜料浆通常比树脂的粘度高， 如果颜料浆预先与树脂混合，由于加树脂后会导致粘度降低而产生沉降， 会使操作者在使用过程中遇到困难。
The pigments used in electropaints must be carefully chosen. Those which are too water soluble or those which react with water should not be used.
用于电泳漆的颜料必须细心选择， 不能使用水溶性太强的或与水起反应的颜料。
A typical cathodic electropaint bath consists of four ingredients:
典型的阴极电泳漆由以下四种成分组成：
An aqueous polymer solubilized with acid.
可与酸形成水溶性的聚合物。
Pigments which are wetted with a special solubilized resin.
被一种专用的水溶性树脂湿润的颜料。
Coalescing solvents.
混合溶剂。
Deionized water.
去离子水。
The polymers and pigments have been discussed previously. Coalescing solvents are water-miscible glycol ethers which aid in the water-dispersibility of the resin and enhance coating uniformity.
聚合物和颜料在前面已经讨论过，混合溶剂是水溶性的乙二醇醚类， 它有助树脂在水中的水分散和提高涂膜的均一性。
Coating uniformity is aided in two ways:
溶剂改善涂膜的均一性有两种途径：
When the film is deposited, some coalescing (the flowing together of resin particles) takes place. This action helps build film resistance and permits the formation of uniform films.
当涂膜沉积时，发生某些聚结（树脂微粒聚到一起），这个作用有助于增强涂膜的电阻及形成均一的涂膜。
During baking, the coalescing solvents enable the film to flow.
在烘干过程中， 混合溶剂有助于涂膜的流平。
