Polypropylene masterbatch is composed of pigments, carriers and additives. What functional requirements does it need?

Polypropylene is a kind of simple hydrocarbon, which contains tertiary carbon atoms in the molecular chain, which is heated, and can be easily cracked by the treatment at the tertiary carbon atom after receiving light, which deteriorates the polypropylene quality. Therefore, the masterbatch produced is required to be used in high-temperature spinning. It is easy to scatter, does not damage the fiber quality, does not fade the fiber, has excellent light resistance, abrasion resistance, solvent resistance, and can withstand severe spinning draft.

(1) The pigments selected for the heat-resistance masterbatch, the most basic requirements are able to withstand the temperature of the polypropylene fiber production process, and do not change its function. Temperature and temperature requirements are 270～280°C.

(2) The pigments for loose masterbatch should have excellent looseness (plastic masterbatch defoamer is also used as pigment black), and should be loose in the masterbatch, and the loose agent used will not reduce the polypropylene fiber. quality. Otherwise, it is impossible to produce a colored yarn with good quality. The operation does not change, and it is easy to break or attack abnormal fibers when the fibers are drawn.

(3) Brightness Polypropylene stock solution has a variety of uses for coloring. The top is used for bed cover base fabrics and knitted fabrics and requires bright colors. Because organic pigments are bright and colorful and they are easily colored, organic pigments are used wherever they are used.

(4) Lightfastness Some of the pigments have light-sensitive results under the light results in discoloration and brittleness of the colored fibers, and the lightfastness of the pigments is basically related to its chemical structure. Therefore, attention must be paid to the lightfastness of the pigments when manufacturing the masterbatch. When using light-resistant pigments, it is possible to think about adding an ultraviolet absorber.

(5) The pigments used in the invariant masterbatch should have excellent invariance to the colored polypropylene fibers. That is, the pigmented fiber polymer will not resonate with the fiber when it is exposed to heat, light or high temperature for a long time, and the formation of a new chemical group will lower the polymer function. Therefore, pure pigments should be used in the masterbatch, and impurities such as iron, copper, lead, etc. should not be included, and the physical function of the colored polypropylene fiber should be guaranteed.

(6) Water resistance, dry cleaning resistance, oil resistance, coloring polypropylene fiber products in use and inevitably through water washing or solvent dry cleaning, to contact with oil, especially when used in carpets, so its use of colorants to Excellent wash resistance, dry cleaning resistance, oil resistance.

Polypropylene masterbatch has these properties and can be widely used in our daily necessities to meet our various needs.