Abstract
Technological aspects of modifying the operational characteristics of cold cured silicate rubbers have been developed. The effect of chromium oxide on the resistance of cold-curing silicone compounds to thermal aging, as well as on the physic mechanical properties and dielectric characteristics has been studied. The various content of ultrafine chromium oxide in cold-cured silicone compositions has been investigated, it’s optimal content in an amount of 2 - 5 mass at 100 mass, including low molecular weight rubber. Chromium oxide has been proven to improve the thermal stability of cold-cured silicone compositions. The manufacturing technology and component composition of the composition with high performance.
Highlights
In the elements of aviation structures of large size and low rigidity rubber thermal protective coatings are used, which do not collapse when the structure is deformed
The effect of chromium oxide on the resistance of cold-curing silicone compounds to thermal aging, as well as on the physic mechanical properties and dielectric characteristics has been studied
Of considerable interest was the study of the effect of ultrafine chromium oxide as a heat stabilizing additive in cold-curing compositions, which are made on the basis of low molecular weight polymethylsiloxane rubber
Summary
In the elements of aviation structures of large size and low rigidity rubber thermal protective coatings are used, which do not collapse when the structure is deformed. These include silicone elastomers, which have increased frost and heat resistance, good elasticity, high dielectric performance, atmospheric, moisture and ozone resistance, biological inertness. Along with hot-vulcanization silicone rubber based on high-molecular-weight silicone rubber, cold-curing compositions based on low-molecular-weight polyorganylsiloxanes are increasingly used. These compositions are widely used in electronics, mechanical engineering, space and rocket technology, medicine, etc. Of considerable interest was the study of the effect of ultrafine chromium oxide as a heat stabilizing additive in cold-curing compositions, which are made on the basis of low molecular weight polymethylsiloxane rubber. The effect on the physic mechanical and dielectric parameters of silicone compositions has been studied
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