Preparation of PET Fiber Black Masterbatch
Release time:
2021-11-12
The preparation of PET fiber black masterbatch is a complex process, which requires multiple steps and technical coordination. The preparation process of the PET fiber black masterbatch will be described in detail below.
The preparation of PET fiber black masterbatch is a complex process, which requires multiple steps and technical coordination. The preparation process of the PET fiber black masterbatch will be described in detail below.
The choice of PET resin is very important. In general, a better black masterbatch can be obtained by selecting a PET resin with a higher relative molecular mass. Low molecular weight PET resins tend to cause color instability or difficulty in achieving the desired color depth.
Need to choose the appropriate pigment. There are many kinds of black pigments, the most commonly used of which are carbon black and ferrite. The color depth and stability of these two pigments are very good, which can meet the requirements of PET fiber black masterbatch.
Pigment pretreatment is required. Pigment pretreatment is mainly to improve the dispersion and stability of pigment in PET resin. Typically, the pigment and the appropriate dispersant are mixed and then subjected to high shear mixing to achieve uniform dispersion of the pigment in the resin.
Next, it is necessary to mix the PET resin and the pretreated pigment. In this process, attention should be paid to the fact that the mixing should be uniform to avoid uneven color or agglomeration. In general, high-speed mixing can be used to uniformly disperse the particles in the resin.
Melt processing is required. During melt processing, temperature and shear forces need to be controlled to ensure color depth and dispersion. Typically, the melt processing temperature is 250-280°C and the shear force is 800-1200rpm. In the process of processing, it is also necessary to add stabilizers and lubricants to ensure the quality and stability of the product.
Through the above steps, high quality PET fiber black masterbatch can be obtained. These masterbatches can be used to prepare various PET fiber articles, such as textiles, carpets, automotive interiors, etc.
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