A kind of antistatic agent and its preparation method and application

Abstract

The present invention relates to the technical field of antistatic agents, and more particularly, to an antistatic agent and a preparation method and application thereof. The preparation raw materials of the antistatic agent include acid anhydride grafted polyether and polypropylene. The acid anhydride grafted polyether is grafted to polypropylene by chemical reaction. Compared with the traditional physical blending method, the polyether is not easy to be precipitated, and the time of antistatic effect is increased. The antistatic agent after grafting is in The distribution in polypropylene is better and uniform, and the antistatic effect is better. Select polyether and polypropylene grafting with appropriate chain length to promote the dispersion of the antistatic agent during the polyolefin processing, while maintaining a certain dispersed phase structure, further promoting the improvement of antistatic properties. Use dianhydride and vinyl polyether grafting to increase the double bond content on the acid anhydride grafted polyether, promote the possibility of grafting polypropylene at lower temperature and time in the process of blending and extrusion, and improve the antistatic agent. Stability and processing efficiency to facilitate large-scale production and applications.

Description

technical field [0001] The present invention relates to the technical field of antistatic agents, and more particularly, to an antistatic agent and a preparation method and application thereof. Background technique [0002] Polypropylene, abbreviated as PP, is a non-toxic, colorless, odorless thermoplastic resin with excellent performance. It is a colorless and translucent thermoplastic general-purpose plastic. Since its inception, it has developed rapidly in many fields. However, the excellent insulation properties of PP lead to its high resistivity, and it is easy to accumulate charges during production, processing or use. Traditionally, in order to solve the electrostatic problem of PP, most of them are used to add PEG, carbon black, graphite, metal fillers, etc. to achieve the corresponding antistatic purpose. This method has certain effects, but there are still uneven distribution of fillers, poor compatibility, and easy Problems such as precipitation and short-term a...

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