سال انتشار: ۱۳۹۰

محل انتشار: کنفرانس بین المللی فرآورش پلیمرها

تعداد صفحات: ۳

نویسنده(ها):

Sahar Biglari – Department of Materials Engineering, Imam Khomeini International University, Qazvin,Iran
Arman Sedghi –

چکیده:

One of the cheapest reinforcements for fabrication of nano composites is nano silica particle. This reinforcement has good mechanical, physical and chemical properties that would make it so much attractive for reinforcement of polymer matrix composites and lightweight concretes. Nano silica particles are fabricated by gas phase, liquid or solid phase precursors, which on of these precursors are rice husk. This material is a cheap agricultural waste product and has large amount of hydrated silica and other organic compounds that their impurities would be remove simple during conversion to nanosilica.The main method for fabrication of nano silica from rice husk is based on solution-precipitation (chemical method ).In this paper, this method is used for fabrication of nano silica and properties of them were studied carefully.On the other hand Degussa nano silica were used as a reference material and the nano composites fabricated from these two type of nanosilica.Mechanical properties and fracture behavior of nano composites were studied carefully.Results shows that mechanical properties of nano composites reinforced by these nano silica particles are improved significantly. fracture behavior of nano composites are tough-brittle which is the most appropriate behavior for polymer matrix nano composites.