Thermal contraction and antistatic composite master batch, preparation and use thereof

Abstract

The invention discloses a composite master batch with thermal shrinkable and antistatic functions and a preparation method and an application thereof. The composite master batch comprises the following components according to the following weight percentages: 70 percent to 95 percent of polypropylene carrier resin, 1 percent to 10 percent of lubricant, 2 percent to 20 percent of antistatic agent, 0.1 percent to 5 percent of crystal regulator and 1 percent to 10 percent of surfactant. The preparation method of the composite master batch comprises the following steps: (1) every component is weighed according to weight percentage; (2) all components are added into a twin-screw extruder for fusion, mixing and extruding, the rotating speed of the twin-screw extruder is 200 r / min to 500r / min and the temperature is 180 DEG C to 230 DEG C; and (3) the mixed material extruded is removed of water, granulated and dried so as to obtain the composite master batch. The composite master batch can be applied to the production of polypropylene film, can improve the thermal shrinkage rate and the stability of the thermal shrinkage rate, and has antistatic effect.

Description

technical field [0001] The invention relates to a composite masterbatch and its preparation method and application, more specifically, the invention relates to a heat-shrinkable and antistatic composite masterbatch as well as its preparation method and application. Background technique [0002] Polypropylene film has the characteristics of high gloss, high stiffness, good gas barrier properties, high impact strength, and good heat resistance. It is a high-transparency packaging material with excellent performance. Widely used in packaging. Biaxially oriented polypropylene film for cigarette packaging (referred to as "cigarette film") is an important variety of polypropylene film. After biaxially stretched, the film's transparency, gloss, tensile strength, modulus and other properties have been significantly improved. . [0003] A variety of masterbatches are added in the production process of the cigarette film to ensure the mechanical properties, gloss, transparency, heat...

AI Technical Summary

Problems solved by technology

However, in this invention, crystal regulators and high molecular weight lubricants are not added to the polypropylene, which causes the mechanical properties of the film to be low, and the low molecular weight organic matter in this invention tends to reduce the dimensional stability of the film. When the thermal shrinkage rate is low, this effect is more obvious in summer high temperature weather

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