Application of Surface Modified Nano Zinc- Oxide in Sulfur Vulcanization of Tire Tread Compound I- Azad University, North Tehran Branch IRAN Rubber Industries Engineering and Research Institute Dr. Saeed Taghvaei Mercedeh Malekzadeh Dr. Saeed Taghvaei Mercedeh Malekzadeh

Contents  Nanotechnology  More common nanomaterials used in rubber field  Problems consequent using Nano ZnO in rubber matrix  Surface modification of Nano ZnO  Application of surface modified Nano ZnO in tire tread compound  Results

Nanotechnology Nanotechnology is a broad field of applied science and technology focused on controlling and exploiting the structure of matter on a scale below 100 nanometers.

Why Properties Change in Nano Scale  Increased ratio of surface area to volume present in many nanoscale materials opens new possibilities in surface-based science.  Quantum effects impacting behavior of materials.

Nanomaterials Used in Rubber Field  Nano activator (ZnO)  Nano filler (CNT, Nano Silica, Nano Clay)

Small size Problems consequent using nano ZnO Hydrophyl surface Agglomeration

Steric stabilization Surface modification Electrostatic stabilization

Nano Particles Characterization

LabelNZNZ+PPGNZ+PEG Surface Area (m 2 /g)

phr NZNZ+PEGNZ+PPG NR75 SBR25 CB50 Aro oil.10 S1.5 CBS0.75 6PPD1.5 TMQ111 Anti lux222 St. Ac.222 NZnO2-- NZnO+PEG-2- NZnO+PPG--2

Results  Nano ZnO was successfully surface modified by PEG and PPG  The adsorption has done by hydrogen bond  PEG, contained compound has shown faster curing system and better  Improving the properties like abrasion, tensile strength, modules 100%, modules 300% and elongation

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