Antistatic agent as well as preparation method and application thereof

Abstract

The invention relates to the technical field of antistatic agents, in particular to an antistatic agent and a preparation method and application thereof. The preparation raw materials of the antistatic agent comprise anhydride grafted polyether and polypropylene. The anhydride grafted polyether is grafted to the polypropylene in a chemical reaction mode, compared with a traditional physical blending mode, polyether is not prone to precipitation, the antistatic effect duration is prolonged, the grafted antistatic agent is more evenly distributed in the polypropylene, and the antistatic effect is better. Polyether and polypropylene with proper chain lengths are selected for grafting, so that the antistatic agent is promoted to be dispersed in the polyolefin processing process, a certain dispersed phase structure is kept, and the antistatic property is further promoted to be improved. Dianhydride and vinyl polyether are used for grafting, the content of double bonds on anhydride grafted polyether is increased, the possibility of polypropylene grafting at low temperature and time in the blending extrusion process is promoted, the stability and processing efficiency of the antistatic agent are improved, and large-scale production and application are promoted.

Description

technical field [0001] The invention relates to the technical field of antistatic agents, more specifically, the invention relates to an antistatic agent and its preparation method and application. Background technique [0002] Polypropylene, referred to as PP, is a non-toxic, colorless, odorless, and high-performance thermoplastic resin. It is a colorless and translucent thermoplastic general-purpose plastic. Since its inception, it has developed rapidly in many fields. However, the excellent insulation of PP causes its resistivity to be too high, and it is easy to accumulate charges during production, processing or use, and it is difficult to remove, causing its injection molded samples to easily adhere to dust, which brings great inconvenience to production, processing and life. Traditionally, in order to solve the electrostatic problem of PP, most of them use PEG, carbon black, graphite, metal fillers, etc. to achieve the corresponding antistatic purpose. This method ha...

AI Technical Summary

Problems solved by technology

However, the excellent insulation of PP causes its resistivity to be too high, and it is easy to accumulate charges during production, processing or use, and it is difficult to remove, causing its injection molded samples to easily adhere to dust, which brings great inconvenience to production, processing and life.

Traditionally, in order to solve the electrostatic problem of PP, most of them use PEG, carbon black, graphite, metal fillers, etc. to achieve the corresponding antistatic purpose. This method has a certain effect, but there are still uneven distribution of fillers, poor compatibility, and easy Problems such as precipitation and short-term antistatic effect affect the use of materials

[0003] The polymer antistatic agent can be added to the base material by mixing, and by migrating to the surface of the plastic, it can relieve the static charge on the surface and the body, and reduce the resistivity. Compared with the traditional antistatic agent, its antistatic effect Long-lasting, no induction period, its antistatic performance is not achieved by the water layer, so it is less dependent on the relative humidity of the air. At present, polymer antistatic agents are generally grafted with carboxylic acid on polypropylene, and then combined with PEG reaction, the obtained grafted product is used as an antistatic agent, but there are problems such as high preparation temperature and complicated preparation process, and because of the poor thermal stability of PEG, it also affects the long-term antistatic performance of the processed plastic