粉末涂料用有机颜料概述

Overview of Organic Pigments for Powder Coatings

粉末涂料用有机颜料属于高性能有机颜料,是作为无机颜料的一种补充,补齐了无机颜料在颜色鲜艳度、色相齐全方面的缺陷。有机颜料的许多应用性能不仅决定于化学结构,粒径大小与分布、颗粒表面极性、晶体类型与结晶度、表面改性对有机颜料也有很大的影响。本文从有机颜料物理形态、晶型、化学结构特性等方面阐述有机颜料的性能,同时介绍了粉末涂料对有机颜料的性能要求和一些粉末涂料中常用的有机颜料,以及这些颜料的特性总结了有机颜料在粉末涂料中使用容易出现的问题,了解其产生的原因和机理,帮助从业者在众多的颜料色号中选择合适的高性能有机颜料。

Organic pigments used in powder coatings should be high performance organic pigments,which are used as a supplement to inorganic pigments,complementing the limitation of inorganic pigments in terms of color brightness and hue ranges.Many application properties of organic pigments are not only determined by the chemical structure,but also the particle size and distribution,surface polarity,crystal types and crystallinity,as well as determined by their surface modification.This paper described the performance of organic pigments from the aspects of physical form,crystal types and chemical structure characteristics of organic pigments,and indicated the performance requirements of organic pigments used in powder coatings and some commonly used organic pigments in powder coatings,as well as the characteristics of these pigments were given.The problems that are likely to occur in the use of organic pigments in powder coatings were summarized to understand the causes and mechanisms of their occurrence,benefiting the users in selection of the suitable highperformance organic pigments for various colors.