Polyurethane foam nanocomposite and a method of its obtaining

摘要

The method of obtaining polyurethane foam nanocomposites with the use of graphene oxide or its reduced form is characterized in that 0.01-30 parts by weight of graphene nanofiller are added to polyol premix containing 1-90 parts by weight of polyetherols and/or polyestrols with a molecular weight between 400 and 150 000 g/mol, a hydroxyl number ranging from 10 to 700 mg KOH/g, and the functionality of 2-6; 0.01-15 parts by weight of surfactant; 0.01-10 parts of amine and organometallic catalysts; and 0.01-20 parts of environment-friendly porophore. Such obtained premix is homogenized at a temperature between 10 and 90 °C and the stirring rate up to 10000 rpm for 3 hrs in an ultrasound bath, preferably at 20 kHz. Next, the mixture is mixed with isocyanate agent in the amount corresponding to the value of IC index between 0.6 and 3. Polyurethane foam nanocomposites obtained according to the aforementioned method are also the object of the invention.