Polypropylene is a kind of pure hydrocarbons, molecular chain containing a tertiary carbon atoms, heating, is affected by light cracking at the tertiary carbon atom molecule easily, make the polypropylene fiber quality is bad, so the requirements made in high temperature in spinning color masterbatch easy diffusion, does not damage the fiber quality, not to make the fiber has excellent light fastness,, abrasion resistance, solvent resistance, withstand rigorous spinning drafting.
Heat resistance masterbatch selected pigments, requirements to withstand polypropylene fiber production process in the most basic temperature, maintain the stability of its performance. High temperature General requirements for 270 ~ 280 DEG c..
The dispersion of pigment masterbatch used should be good dispersion, and in colour masterbatch dispersant to disperse evenly, will not reduce the quality and use of polypropylene fiber. Otherwise can't produce dope dyed fiber quality is good, the operation is not stable, easy to break or abnormal fibers in the drafting of fibre.
The brightness of the polypropylene fiber dope dyed for a variety of purposes, including for the bedspread fabric and knitted fabrics, requirements of bright colors. Because the organic pigments comparison of bright and colorful, and easy to color, so where the use of on the uses of the need to use organic pigments.
Light resistance in the light of the role of some pigments have photosensitive action, make the colored fiber fade and damage, and the light fastness of pigment and their chemical structure is basically about, so in the production of masterbatch should give full attention to colour fastness to light, light fastness of pigment to use, can consider adding UV absorber.
The stability of the pigment in the use of Color Masterbatch, color polypropylene fiber have excellent stability. Which means the colored fiber polymer after long time exposure to heat, light or when subjected to high temperature paint will not react with fibres, the formation of new chemical group to Jiang low polymer properties. So color masterbatch should be selected in as pure pigment may, impurity not containing iron, copper, lead salt, guarantee the physical properties of the polypropylene fiber has excellent coloring.
Water resistance, oil resistance, resistance to dry cleaning, colored polypropylene fibre products inevitably after washing or dry cleaning solvent is used and, to come into contact with oil, especially for the carpet, so its use of colorants have good water resistance, oil resistance, resistance to dry cleaning.
