In addition to its own superior performance characteristics, silicone products have another strength, which is multi-choices of colors that can make their products more competitive.While how to do the color matching work for silicone products?

The solution of toning

The method is to dissolve the silicone rubber in a good solvent into a solution of a certain concentration, and then mix the silicone rubber compounding agent except sulfur and the rubber compounding agent except sulfur evenly, dry the solvent at a certain temperature, and finally add sulfur on the rubber mixer. Art complex, uneven dispersion, color difference, difficult to recover solvent, environmental pollution, less use.

Color mixing

In the current silicone products, the most commonly used toning method is to directly add toner to the carrier, or mix it with the carrier first, and then add it to the rubber material, and stir it evenly through the rubber mixer to get the color of silicone rubber. Methods are divided into the following types.

Powder color

In the mixer, powder and small material are directly added to the silicone rubber for mixing. Its advantages are simple operation, low cost, but mixing dust, pollution of the environment, and not easy to evenly disperse, color difference, if the particles are too thick, will also cause color spots, stripes or chromatographic mutual pollution, etc., less use.

Paste color

First, the toner is mixed with a liquid compounding agent (such as plasticizer), ground into a paste or slurry with a three-roller machine, and then added to the silicone rubber product in a fixed proportion. The method avoids dust flying and is beneficial to the dispersion of toner in rubber and uniform color. However, the toner content in the color paste is low, the color is not high, transportation, loss, users inconvenient to use.

Particle color

At present, there are two main methods to prepare toner. As with other powdery compounding agent granulation method, the powdery toner is first infiltrated by surfactant, and then granulated by wax melting or resin melting extrusion; The second method is to use surfactants to infiltrate toner, and then use mechanical force to refine toner particles, to make a dispersion of a certain concentration, and then mixed with latex co-precipitation, after drying, rolling granulation. Granular toner is easy to use, good dispersity, no dust flying, no pollution of the environment, bright color, uniform hair color, no color difference, is a very promising color toner method. However, the complex preparation process and high cost of particle toner limit its wide application.

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