Slowly-released peroxide initiating system with nano structure and preparation method thereof

Abstract

The invention relates to a slowly-released peroxide initiating system with a nano structure and a preparation method thereof. The preparation method comprises the following steps of: firstly, uniformly dispersing nano container carriers in a volatile indifferent solvent and processing for 1 hour by an ultrasonic processing device; then dissolving 1 to 20 percent of peroxide into the volatile indifferent solvent and slowly dropwise adding the solution obtained in the first step with stirring at room temperature; adding 4 to 20 percent of promoter into the obained solution and stirring to ensure the promoter to be uniformly dispersed; and carrying out devolatilization and drying on the solution in a vacuum dry oven at a temperature of 40 DEG C to obtain the slowly-released peroxide initiating system. Due to the adoption of the initiating system prepared by the preparation method, in the process of grafting with melt extrusion, the grafting ratio of a reaction product can be obviously improved, the side reaction in the reaction process can be inhibited, peroxide residues are reduced, and the product odour is reduced. The slowly-released peroxide initiating system can be widely used for production in various fields of automobile interior trim parts, home appliances and the like.

Description

technical field [0001] The invention relates to an initiation system and a preparation method thereof, in particular to a nanostructure-containing slow-release peroxide initiation system and a preparation method thereof. Background technique [0002] With the development of science and technology and the times, polymer material modification or alloying has been more and more widely used as an inevitable means. In order to make it better meet the requirements of products, polymer compatibilizers have been obtained more and more widely used in research. [0003] It is a convenient and effective method to prepare compatibilizer by reaction grafting through twin-screw extruder melt extrusion. However, the conventional peroxide initiation system will also bring a series of side reactions in the process of initiating free radical grafting, such as excessive degradation of PP or crosslinking of PE, and because the diffusion of free radicals in the melt is difficult, There is a so...

AI Technical Summary

Problems solved by technology

However, the conventional peroxide initiation system will also bring a series of side reactions in the process of initiating free radical grafting, such as excessive degradation of PP or crosslinking of PE, and because the diffusion of free radicals in the melt is difficult, There is a so-called "cage wall effect", so it is difficult to increase the grafting rate

[0004] At present, there are many research reports on how to suppress the side reactions in the process of melt grafting reaction and how to increase the grafting rate, such as using supercritical carbon dioxide as the reaction medium, or adding Gongjun monomer, etc., but this is not practical in practical applications. There are certain difficulties and limitations in the process