Why is flame-retardant plastic more difficult to match colors?

1. The coloring quality is related to the dispersion of the toner

The coloring problem often encountered in flame-retardant plastics, especially the types of extrusion, is mainly related to the dispersion of the toner in the plastic molding process. The dispersion is related to the processing technology. For example, injection molding is generally better than extrusion dispersion, and the temperature is higher. Dispersion is better than lower temperature.

2. The coloring effect is related to the viscosity of the base material

The viscosity of the plastic base material, that is, its fluidity, has an important influence on the dyeing effect of the colorant. Take a popular particle, drop a drop of ink into a basin of water, and the whole water will quickly turn black. If you drop a drop of ink on the dough, it will take us many times of kneading to make the dough slowly. The whole becomes black.

3. The addition of flame retardants makes the fluidity of the plastic poor

Under normal circumstances, plastics are more like water during the plasticization process, while flame-retardant thermoplastic elastomers are more like dough. Halogen-free flame-retardant plastics are more difficult to disperse than halogen-free flame-retardant, because halogen-free flame-retardant plastics add more flame retardants, resulting in worse fluidity of the entire plastic.

4. What kind of coloring method does flame-retardant plastic adopt?

Usually we recommend using masterbatch and dyeing granulation to match colors. Because the processing temperature is not too high during the injection or extrusion processing of thermoplastic elastomers, because too high will cause the flame retardant to decompose, and the injection and extrusion processing cannot be vacuumed and may produce pores. Therefore, when the temperature is not very high during the processing and molding, the dispersion of the toner cannot meet the coloring requirements. Of course, halogen-free flame-retardant plastic manufacturers will try to improve the fluidity of the system as much as possible, but it is necessary to consider whether additives that improve fluidity have an impact on the flame-retardant effect. It is important to note that there are many additives that increase fluidity, including some diffusion oils, which will have a significant impact on the flame retardant effect of the product.

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