Structure and Mechanical Properties of Nanocomposites based on NR/SBR and Halloysite Nanotube

The objective of this work is to improve the properties of NR/SBR type rubber that is frequently used in automotive tyres, using halloysite Nanotube(HNT) additions. Low weight (1wt.%, 3wt.% and 5wt.%) percentages of HNT were filled in rubber matrix using either a laboratory type Banbury mixer or a two roll mixer. The structural characterization was carried out using scanning electronmicroscopy (SEM) and the curing characteristics of nanocomposites shows that the dispersion of HNT is dependent on concentration of nanoparticles. The structural effect of nanocomposites on tensile, dynamical mechanical thermal analysis (DMTA) is examined. Tensile strength and modulus of nanocomposites were increased with addition of HNT to polymeric matrix. Also the tanδ variation showed that incorporation of HNT in NR/SBR blends increased the glass transition temperatures of polymers

کلیدواژه ها:

Natural Rubber ، Styrene-butadiene Rubber ، Halloysite Nanotube ، Mechanical Properties