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What is black masterbatch?

Black masterbatch is a kind of plastic colouring agent, which is mainly made of pigments or additives mixed with thermoplastic resin, melted, extruded and pelletised. It is compatible with the base resin in the production process of plastic products and gives them black colour. The composition of black masterbatch usually includes pigment (e.g. carbon black), carrier resin, dispersant and other additives. The pigment is the key component in determining the colour, the carrier resin helps the pigment to disperse evenly in the plastic product, and the dispersant and other additives improve the dispersion of the pigment and the processing performance of the masterbatch.

The production process of black masterbatch includes the steps of batching, mixing, melting, extruding, cooling, pelletising and packaging. Raw material selection, mixing process, melting and extrusion process and pelletising all have an important influence on the final performance of black masterbatch.

Application areas of black masterbatches:

Black masterbatch has a wide range of applications, including but not limited to home appliances, automobiles, packaging materials, construction materials and so on. In the home appliance industry, black masterbatch is used for the shell and internal parts of TV sets, washing machines, refrigerators, etc. In the automotive industry, it is used for the production of internal and external parts of automobiles; in the packaging material industry, it is used for the production of black plastic bags, boxes, etc. In the construction material industry, it is used for the production of black tubes, profiles and so on.

The performance characteristics of black masterbatches include good dispersibility, high colouring power, good processing performance and stable physicochemical properties. Dispersing performance is very important for black masterbatch, and poor dispersing performance of black masterbatch will affect plastic products in many ways.

What are the effects of poor dispersion of black masterbatches?

Firstly, uneven dispersion will lead to the problem of colour difference or uneven colour of the product, which will affect the appearance quality of the product. Secondly, poorly dispersed black masterbatches may clog equipment during processing, increasing production costs and reducing production efficiency. In addition, poor dispersion may also lead to reduced stability of the product, easy precipitation or deposition, affecting the service life of the product.

In order to improve the dispersion performance of black colour masterbatch, the following measures can be taken:

1. Optimise the selection of raw materials to ensure the purity and particle size uniformity of pigments and reduce impurities.

2. Adjust the parameters of production process, such as increase the mixing temperature and prolong the mixing time, in order to promote the mixing of pigment and resin.

3. Use high-efficiency dispersing equipment, such as high shear Luo combining machine, in order to improve the dispersibility of the pigment.

4. Choose suitable carrier resin to ensure good compatibility with the target resin, so as to facilitate the dispersion of pigment.

5. Add appropriate amount of dispersant to reduce the interaction force between the pigment particles and promote its dispersion in the resin.

Through these methods, the dispersing performance of black masterbatch can be effectively improved, so as to enhance the overall quality of plastic products.

SILIKE Silicone hyperdispersants, effective processing solutions to improve the dispersibility of black masterbatches

This series of products is a modified silicone additive, suitable for common thermoplastic resin TPE, TPU and other thermoplastic elastomers. Appropriate addition can improve the compatibility of pigment/filling powder/functional powder with the resin system, and make the powder keep the stable dispersion with good processing lubricity and efficient dispersion performance, and can effectively improve the surface hand feel of the material. It also provide a synergistic flame retardant effect in the field of flame retardant.

SILIKE Silicone hyperdispersants SILIMER 6200 is specially developed for the preparation of color concentrates and technical compounds. Provides excellent thermal and color stability. Imparts positive influence on masterbatch rheology. It improves the dispersion property by better infiltration in fillers, increases productivity, and reduces the cost of coloration. It can be used for masterbatches based on polyolefins (especially PP), engineering compounds, plastic masterbatches, filled modified plastics, and filled compounds as well.

The addition of SILIKE Silicone hyperdispersants SILIMER 6200 to black masterbatches brings the following advantages:

1.Improve coloring strength;

2.Reduce filler and pigment reunion possibility;

3.Better dilution property;

4.Better Rheological properties (Flow ability, reduce die pressure, and extruder torque);

5.Improve production efficiency;

6.Excellent thermal stability and color fastness.

Different additive amount will bring different effect, if you are looking for a way to improve the dispersion performance of black masterbatch, you can try SILIKE Silicone hyperdispersants SILIMER 6200.SILIKE as a manufacturer of silicone processing aids, we have a wealth of experience in the modification of masterbatches, and we have a leading position in the modification of plastics.

Contact us Tel: +86-28-83625089 or via email: amy.wang@silike.cn.

website: www.siliketech.com to learn more.