Gateway for:

Member Countries

Modificators for Polymer Composites

#T-1150


Synthesis of High Effective Dopants for Increasing Radiation Resistance and Decreasing Triboelectrification of Polymeric Composite Materials

Tech Area / Field

  • CHE-POL/Polymer Chemistry/Chemistry

Status
3 Approved without Funding

Registration date
21.04.2004

Leading Institute
Tajik State National University, Tajikistan, Dushanbe

Collaborators

  • Johannes Gutenberg-Universitat Mainz / Institute of Organic Chemistry, Germany, Mainz

Project summary

The purpose of the given project is the development of the new highly effective antiradiation and antistatic compounds for polymer-composite materials from a number of heterocyclic compounds and complex compounds of a number of transitive metals with this class of organic ligands. It is known that polymeric and polymeric-composite materials are exposed to process of fast aging under the influence of ultra-violet and scale-radiation; therefore, it brings to a sharp decrease of their operational characteristics. Various inorganic and organic compounds are widely used for stabilization of operational characteristics of polymeric-composite materials now. However, even under high concentrations these stabilizers do not provide safety for operational characteristics of polymers in the conditions of simultaneous influence of radiation, forces of stretching, twisting, and also aggressive liquid environments. Our research on the study of the influence of coordination compounds of rhenium (V) with a number of heterocyclic ligands carried out by an order of a number of Union organizations in the period from 1980 till 1990 has shown that introduction of even an insignificant amount of complexes in the structure (composition) of some polymers brings to obtaining of completely unexpected results. In particular, it was established, that by the introduction of a small concentration of the complexes of rhenium (V), there occurs a significant hardening of polymers under the influence of ultra-violet and scale-radiation, that favorably impacts the increase of exploitation period of polymers in hard operational conditions. This effect, i.e. the effect of the increase of stability of polymers containing rhenium of coordination compounds under the influence of radiation, had not been known earlier. It was established that the introduction of coordination compounds considerably reduces and the triboe rectification of polymeric materials. By introducing a small concentration of complexes the triboelectification of polymers is reduced by several times. The accomplished researches have shown that the introduction of complexes results in safety of parameters of physical-mechanical properties of polymers; both- under the influence of various gas mixes and deep vacuum as well.

The proposed project includes development of the methods of obtaining the new highly effective dopants from the coordination compounds of a number of metals (molybdenum, silver, iron etc.) with organic heterocycles, which promote substantial growth of the operational characteristics of polymers to the rigid influence of ultra-violet and scale - radiation. It is supposed to develop the methods of obtaining of various complexes, which are capable to reduce considerably the tribuelectification of polymers. In the course of the realization of the project the mechanism of the unusual influence of coordination compounds on the physical-mechanical properties of polymers under the impact of UV- and scale- radiation is planned to be revealed. It is also planned to establish the appropriateness for the influence of the nature of the central the complexing atom, the nature of hetero cycles, the quantity of the coordinated molecules of ligands and other factors on the radiating stability and the triboelectification) of a number of polymers.

The prospective project meets the purposes of ISTC for realization of reorientation of weapon-scientists to the peaceful activity and their integration into the international scientific community.

The volume of the work to be carried out under the project is designed for three years (36 months) with the use of modern physical-chemical methods, application of computer engineering for realization of theoretical accounts, processing and analysis of the experimental data.


Back