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Модификация полимеров внедрением микро- и наночастиц
С. 104–108.
Eriskin A. A., Демидов В. А., Самохина М. С., Бедняков С. А., Зайцев С. В., Новиков Л. С., Черник В. Н., Гайдар А. И.
Polymer materials are widely used in modern designs of spacecraft (SC). On their basis different temperature-control coatings, special thin-film elements, etc. The disadvantage of the polymers is their low resistance to atomic oxygen, which is a major component of the Earth's atmosphere at altitudes of 200-800 km. Therefore, for low-orbit satellites operating in this altitude range, an extremely urgent problem is to protect the device on the surface of polymeric materials from the damaging effects of atomic oxygen flow.
Currently used two basic approaches to solving this problem: coating the surface of a material resistant to oxygen and coating material by introducing a modification in its surface layers of solid particles that create a barrier that prevents penetration of oxygen into the deeper layers of polymer. We have previously shown that the introduction into the polymer matrix of the oxide particles with a diameter of 30-100 nm ~ at a concentration of 5-30% mass loss allowing reduce modified samples when exposed to atomic oxygen at 10-15% [1].
However, in order to achieve higher stability of modified samples, further studies on the physico-chemical mechanisms that reduce the intensity of the process of erosion of the surface of the polymer, and the creation of more efficient technologies modification of polymers.
In this work, addition polymers modified by introducing a step of manufacturing the solid nano and microparticles was studied the possibility of creating on the surface of the protective layer by bombardment with particles of solid samples velocities ~ 0.5-3 km / s.
