Increasing the operational and repair characteristics of water transport vehicles by using polymer composites

Abstract

The article shows that in order to increase the strength of adhesive joints of epoxy coatings to improve the operational and repair characteristics of water transport vehicles, it is necessary to add modifiers or other additives to the polymer. Currently, the modification of epoxy polymers is promising, since their filling with additives with a homeopathic content ensures an increase in the characteristics of the materials.

  Note the need to choose a modifier that is chemically active for interaction with epoxy macromolecules. This approach takes into account both the physical nature of the additive and its chemical structure in the form of side groups and segments of the molecular chain at the micro level. It is important to use the modifier diaminoazobenzene carboxylic acid in the form of an active modifier for interaction with epoxy resin. Such a modifier contains active functional groups. It was believed that the vector of tests, which provides for the optimization of the content of the above-mentioned modifier in the epoxy polymer, according to the criteria of the strength of adhesive joints and, additionally, residual stresses, is important and relevant in improving the operational and repair characteristics of water transport vehicles.

When creating new materials, epoxy polymer is taken as a basis. Protective functional covers were stitched with PEPA hardener. Diaminoazobenzene carboxylic acid is used as a modifier.

It was established that when obtaining materials with increased strength of adhesive joints, it is necessary to add a modifier to the polymer at a content of 0.5...1 wt.% of 100% epoxy polymer and 10% PEPA hardener. Such a selection of ingredients will ensure the formation of a composite that, compared to the unfilled polymer, is characterized by 1.5 times higher tensile strength of adhesive joints, and 1.2 times higher shear strength of adhesive joints. It was believed that this is an important factor in increasing the durability of coatings in difficult operating conditions of vehicles.

Key words: transport; properties; operation; polymer; composite.