The effect of chemical fiber masterbatch on the quality of polypropylene?

With the rapid development of China's economy, the chemical fiber color masterbatch industry has also developed substantially with the development of related industries. The production technology level of chemical fiber color masterbatch has also achieved unprecedented progress, and the application field is also expanding. However, due to the influence of China's traditional market competition model, product competitiveness is not strong, especially in terms of quality requirements. In particular, polypropylene manufacturers pay more attention to the impact of the quality of chemical fiber masterbatches on the quality of polypropylene.

Dispersion of chemical fiber masterbatch in polypropylene fiber

The polypropylene fibers with various colors are caused by the uniform dispersion of pigment particles in the polypropylene fibers. The key is that the pigment particles are fully refined and evenly distributed (mixed) in the polypropylene fibers. Refinement and dispersion is to break the agglomerates or agglomerates of pigments to make the particles smaller, and the key lies in uniform dispersion. The effect of dispersion affects the brilliance, transparency, luster, fiber strength, elongation, and aging resistance of colored polypropylene fibers. Sex, electronegative rate, etc. are affected.

In general, the particle size of the pigment dispersed is less than 1um can be used for fibers or ultra-thin films, and more than 5um will cause the surface of the fiber to be dull, and more than 10um will cause spots and streaks on the surface of the fiber, and with the increase in particle size. The breaking strength and elongation of large fibers continue to decrease. The finer the particle size, the stronger the tinting strength and the better the dispersibility. At the same time, the smaller the particle size, the larger the surface, resulting in an increase in the hiding power.

Since there are three types of pigment particles: primary particles, agglomerates, and agglomerates, and the single commodity pigment particles are larger than agglomerates (about 75-250um), they must be dispersed. The so-called pigment dispersion is to disperse the The process of crushing and refining the agglomerates.

The dispersion of pigments is first to wet the pigments with a wetting agent and coat them on the surface of the pigments to reduce the cohesion between the pigments and reduce the energy required to break the pigment agglomerates, followed by the crushing and refinement of the pigments. The free movement of the pigment agglomerates (impact stress) and the shear stress of the surrounding medium break the agglomerate particles. After the pigment is dispersed and refined, the particle size decreases, the surface area increases, and the surface free energy of the pigment also increases, resulting in the instability of the refined pigment. Therefore, a single coating treatment is required on the surface of the pigment to reduce the newly formed pigment. The interfacial surface energy prevents re-agglomeration, and then the pigment is mixed and dispersed in the melt, that is, the wetted and pulverized pigment is uniformly dispersed into the material to be colored.

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Tangshan Weiye Plastic Co., Ltd. specializes in the production and sales of: masterbatch, polypropylene masterbatch, non-woven masterbatch, polypropylene filament masterbatch, polypropylene BCF silk masterbatch, polypropylene carpet silk masterbatch, polypropylene staple fiber color Masterbatch, polypropylene modified masterbatch, functional masterbatch, anti-aging masterbatch, antistatic masterbatch, flame retardant masterbatch, cooling masterbatch, single-color masterbatch, multi-color masterbatch, chemical fiber masterbatch, organic pigments, Hebei Masterbatch, Hebei polypropylene masterbatch.

Tangshan Weiye Plastic Co., Ltd.

Contact: Mr. Xu

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Tel: 0315-5117262

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