Coloring in synthetic resin without adverse effects

Synthetic resin can be dyed in all imaginable shades and even patterns, whereby the translucency or transparency can be varied. Unlike conventional coating colors, the coloring additives have an influence on the resin structure and its optical and functional properties.

Dyeing is systemically important

The nature and structure of synthetic resin must be considered as a complex system that alters its function by means of components and ingredients. Additives, which affect the system in different ways, are added to the raw materials resin and hardener. Supplements for the coloring can be:

  • Powdered color pigments
  • Resin-based pastes
  • tinting concentrates

Depending on the type of resin and the method of dyeing, the behavior of the system changes in function and appearance. In particular, the liquefaction or viscosity is often changed. As a result, both processability and drying times and curing results change.

The coloring additives must be "adjusted" to the resin and optionally "countered" by further additions in order to obtain the functionally required properties of the resin. Other systemically important effects can be foaming, formation of inclusions and cloudiness.

Color changes by mixing

In most cases, color pigment preparations are used, for example, from the art of dyeing resin. For almost all colorants, it must be taken into account that the starting color of the dye does not correspond to the final result in the dried resin.

Even by the introduction of the dyes, a color change is systemically induced, since dilution effects result from the distribution. A "saturation" of the resin is possible, but only professionally accessible. Self-staining should always be preceded by test runs, as color deviations can become immense.

Viscosity and staining result

Dripping of paint additives, pouring and stirring are the three common ways to dye synthetic resin. Apart from the viscosity change by the dye, the initial viscosity already determines the color result. High viscosity makes any distribution more uniform. To liquid resin quickly forms optical streaks. The exact time when the dye stops spreading in the resin is very hard to match.

Tips & Tricks

When coloring synthetic resin, always follow the manufacturer's instructions for external conditions. For example, find the intersection between resin, hardener, and paint additive in terms of outside and processing temperature. Perhaps alternatives to the originally selected dye are better for processing.

Video Board: How to make an Ocean Table // Concrete and Epoxy Resin