Life of rubbers as dependent on the concentration of a chemically aggressive medium

Research of the Chemico-Mechanical Practices in Polymer Material Processing by Cutting

“…It has been mentioned above, that under the influence of aggressive chemical mediums on polymers the phenomenon of chemical destruction takes place. The analysis of the research [1][2] shows that in accordance with correlation of diffusion speeds of aggressive mediums and chemical reaction in polymer destruction speeds in aggressive mediums can take place in through following areas: inner diffusion -kinetic (destruction takes place in reaction zone, its size is increasing in time, and later it is spread on the whole volume of polymer material); inner kinetic area (destruction takes place with similar speed in accessible volume of polymer product); outside diffusion -kinetic area (destruction takes place in thin surface layers of constant size, which can be monolayer of polymer in the limit).…”

“…The destruction of constructional material structures, including polymers, is effective chemical medium [1][2] .the influence of the aggressive medium on polymer is expressed in changing its structure and properties without destructions of the material integrity (cracking, loosening or swelling of the material surface to a certain degree) or causing its destruction. For nondestructive testing (NDT) by acoustic methods it is often necessary to generate probe pulses of complex forms [3][4] .…”

“…Adsorption will take place on a inner parts of solid surface which are formed by the walls of emptiness and pores, which have enough volume and the corresponding form collecting molecules of diffusing substance. When swelling takes place in physically active mediums the solidity of polymer material is lowering while its elasticity is improving [1,2] The lowering of polymer solidity under swelling can be explained by two factors.…”

The Analysis for Chemico-Mechanical Practices Using in Polymer Material Machining

“…The destruction of constructional material structures, including polymers, is effective chemical medium [1][2].the influence of the aggressive medium on polymer is expressed in changing its structure and properties without destructions of the material integrity (cracking, loosening or swelling of the material surface to a certain degree) or causing its destruction. For nondestructive testing (NDT) by acoustic methods it is often necessary to generate probe pulses of complex forms [3][4]. The effectiveness and reliability of results from this testing depends on the accuracy and ability to reproduce these pulses.…”