In recent years, the PFA industry has developed into an advantageous industry in China, and many traditional materials have been replaced by new PFA. When PFA is used, due to the different chemical structures of various PFA, the different processing methods and temperatures, and the different performance requirements for PFA colorants, the number of organic pigments consumed each year is not less than 10, the demand has exceeded 10,000 tons, and the demand for inorganic pigments is also above 10,000 tons.

Especially in recent years, with the coloringPFA GranulesThe increasingly stringent toxicity requirements and the continuous improvement of the residual requirements of harmful substances, coupled with the strict requirements of the safety and environmental pollution of PFA colorants in the manufacturing process, have promoted the development of new colorants for PFA, such as pot, lead, chromium and other heavy metal pigment substitutes, the development of pigments made of monomethyl-one-to-one nitroaniline, that is, the red base, as the diazo component, and the development of pigments substitutes of the double-grasping benzidine series, the development of non-deformable pigments for PFA, and the development of organic pigments that are easy to handle in wastewater.

PFA colorants are mainly three types of solvent dyes or a few disperse dyes, pigments and masterbatches.

Although there are three types of colorants for PFA, the most important colorants are organic pigments, and their progress is closely related to the development of the PFA industry.

Several important PFA colorants

Colorant for PFA

PFA is a kind of important general thermoplastic materials, can choose a variety of types of organic pigments for coloring, but still should be based on processing conditions, coloring products, such as the final use of the specific choice of colorants, to avoid PFA coloring when the phenomenon of blooming. PFA coloring can be selected according to different requirements of different grades of organic pigment varieties:

① general colorant, with good economy, but the durability of the general; ② excellent performance of the colorant.

The colorant for PFA may be either an organic pigment or a dye soluble in a polymer. Organic pigments for PFA coloring can be divided into two grades: ① organic pigments with general application performance; ② organic pigments with excellent performance.

These thermoplastic PFA has excellent transparency, in order to make the colored PFA particles to maintain the original transparency, in addition to the application of some of the above-mentioned pigment varieties coloring, it is more appropriate to use solvent dyes and disperse dyes with high solubility, so that they can be dissolved in PFA in the coloring process to form a stable molecular solution, showing high coloring strength.

The performance of PFA colorants is one of the important factors to improve the value of colored PFA particles. With the further development of PFA industry, the performance requirements of colorants will be higher and higher, which will further promote the research of various colorants for PFA coloring, especially organic pigments, and develop new PFA colorants with wider application range and better performance.

This article comes from:www.tflpfa.com