EFFECT OF THE COMPONENT COMPOSITION ON THE IMPACT STRENGTH OF THE CURED POLYMATRIC BINDER

NIYNWI

Abstract

The design of products made of polymer composite materials involves constant work on optimizing the component composition, leading to a reduction in the cost of manufacturing PCM while maintaining or improving operational characteristics.

The epoxy-diane binder used in the production of products is an expensive component. In order to reduce the cost of the finished product, the authors proposed to develop a polymatric material by replacing part of the epoxy-diane binder with polyester.

Reducing the cost of the material, expanding the list of useful properties, reducing density, increasing strength characteristics – this is not a complete list of positive moments when creating a hybrid (polymatric) material, including when creating polymatric structures. The authors of this article analyzed poly-matrix structures based on epoxy-diane and polyester binders. A polymatric material based on EDI (on an anhydride hardener) with a polyester resin was selected as the object of the study, tert-butyl peroxybenzoate was used as a hardener to which.

As an indicator of evaluating the effectiveness of the polymatric binder, the impact strength was chosen as the most sensitive characteristic to structural changes at the level of the chemical mesh and the degree of curing.

The analysis of experimental data made it possible to derive a correlation equation that allows theoretically calculating the final result for the impact strength of a polymatric material, taking into account the volume fraction of the substituent – polyester resin. Based on the results of the study, re­commendations on the use of this dependence are given. The article summarizes the authors' experience and requires further study.