کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1714370 1519943 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study on resistance to ultraviolet radiation of POSS–TiO2/epoxy nanocomposites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی هوافضا
پیش نمایش صفحه اول مقاله
A study on resistance to ultraviolet radiation of POSS–TiO2/epoxy nanocomposites
چکیده انگلیسی


• POSS–TiO2 organic–inorganic hybrid was synthesized and characterized.
• The hybrid was incorporated into epoxy (EP) resin to form POSS–TiO2/EP nanocomposite.
• The resistance to ultraviolet radiation of POSS–TiO2/EP was investigated.
• The POSS–TiO2/EP exhibited excellent properties of anti-space ultraviolet radiation.

Ultraviolet (UV) radiation is a severe space environmental factor, which is harmful to the durability of the polymeric materials of the spacecraft. For this reason, a novel POSS–TiO2/EP nanocomposite was synthesized by incorporating the POSS–TiO2 organic–inorganic hybrid into the epoxy (EP) resin. The effects of UV radiation on EP resin and on POSS–TiO2/EP nanocomposites were investigated in a ground-based simulator that simulates space radiation conditions. Compared with EP resin, the value of bend strength for 5.0 wt% POSS–TiO2/EP varied in a small range before and after UV radiation. Meanwhile, a typical tough feature was observed from the SEM photo for POSS–TiO2/EP nanocomposite after UV exposure. This result indicated that the POSS–TiO2/EP exhibited the excellent properties of anti-space ultraviolet radiation. The thermo gravimetric (TG) results showed that the addition of POSS–TiO2 improved the thermal-stability of EP resin matrix. The synthesized nanocomposites in this work could be used in the satellites to enhance their adaptability to the space environment and extend their service life.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Astronautica - Volume 111, June–July 2015, Pages 84–88
نویسندگان
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