Search academic texts

Registration Number

0216U001008, 0113U001532 , R & D reports

Title

Epoxy-metal-oxide composites obtained via the sol-gel method and protective coatings on their base

popup.stage_title

Head

Zhyltsova Svitlana Vitaliivna,

Registration Date

04-01-2016

Organization

Donetsk National University

popup.description2

The object of the investigation - epoxy resins and epoxy-titania composites cured by amine hardener or using cationic polymerization, epoxy-polysiloxane composites of cationic polymerization. The objective of this stage of research - determination of the relationship between the conditions of the sol-gel process, structure and properties of epoxy-polysiloxane and epoxy-titania composites to create materials with predictable properties. Research methods - gas-volumetric analysis, derivatography, dynamic mechanical analysis, the sol-gel analysis, gravimetry, determination of adhesion, microhardness and impact strength, potentiodynamic analysis. The thermal stability of the sol-gel derived epoxy-inorganic materials and protective properties of thin coatings made of them have been determined. It was found that the thermal stability of the composites depends on the method of epoxy matrix formation. Epoxy-titania composites cured with the amine hardener as well as the epoxy-polysiloxane systems of cationic polymerization cured at room temperature had the lowest thermal stability among the investigated samples. Epoxy-inorganic composites had the improved thermal stability at low concentrations of titania and polysiloxane filler (from 0.5 to 1.5 wt.%). At low filler content effect of small additions has been observed, which resulted in the improvement of thermal stability of the composites, the reduction of the maximal rate of thermal degradation and high-temperature oxidation. The protective properties of the coatings on the surface of the aluminum alloy D16 in corrosive environments have been investigated. The composition of the composites with an optimal combination of characteristics, which could be used as protective coatings (including anticorrosive coatings), has been determined. Epoxy-polysiloxane and epoxy-titania composites of cationic polymerization with a low content of inorganic component could be recommended as anticorrosive coating. The obtained results can be offered for the development of new polymeric materials in the Institute of High-Molecular compounds of the NAS of Ukraine, Antonov State Company and others. Application: defense and aerospace industry, mechanical engineering and shipbuilding, production of construction materials, building, protection of historical monuments.

Product Description

popup.authors

Жильцова Світлана Віталіївна
Леонова Наталя Геннадіївна
Мізіна Наталія Валеріївна
Сергієнко Юлія Євгенівна

popup.nrat_date

2020-04-02