Improving stability of mechanical properties for nitrile butadiene rubber composite by carbon nanotube with antioxidant loading distribution

• DOI: 10.1002/pc.24929
• Publication Date: 2018-05-21T04:39:54Z
• Authors: Jihua Zhang; Hui Zhang; Fengbo Chen; Mingjie Liu
• Keywords: Thermal Stability; Nitrile rubber

Antioxidants are necessarily used in nitrile butadiene rubber (NBR) products to prolong their lifetimes. But blooming of antioxidants limits the anti‐aging efficiency. Herein, a novel solution was proposed avoid such blooming. Antioxidant, 3, 9‐bis‐{1, 1‐dimethyl‐2( β ‐[3‐tert‐butyl‐4‐hydroxy‐5‐methylphenyl‐] propionyloxy) ethyl}‐2, 4, 8, 10‐tetraoxaspiro [5, 5]‐undecane (AO‐80) loaded carbon nanotubes (CNTs) by chemically grafting after shearing force and then physically melting encapsulate. In AO‐80 CNTs (CNT‐AO80), physical loading amounts were 2.1% strongly suppressed those parts from (13.9%), developing distribution around CNTs. CNT‐AO80 therefore maintained high total efficiency antioxidant reduced its release not bloom. When 20 phr doped NBR, they allowed good dispersity reinforcement for matrix. After thermal‐oxidative aging at 70, 80, 90°C 60 days, composite gave an extremely low deterioration mechanical property. POLYM. COMPOS., 40:E1172–E1180, 2019. © 2018 Society Plastics Engineers