Preparation of self-healing natural rubber based on

Abstract

Zinc methacrylate （ZDMA） or poly （zinc methacrylate） oligomer （PM） were introduced into natural rubber or blended with carbon black/silica and natural rubber to prepare a flexible fatigue resistant rubber with self-healing property. The results showed that ZDMA had better self-hea-ling than PM because of the reversible supramolecular network. When the amount of ZDMA was 40 phr, the self-healing efficiency of vulcanizate was the highest, close to 100%. Unsaturated carboxylate （ZDMA/PM） was combined with traditional fillers （carbon black/silica）, PM could effectively inhibit crack propagation only in the early stage, and ZDMA could significantly improve the flexure resistance of the material. The vulcanizate had the best flexural fatigue resistance when m（ZDMA）/m（carbon black）was 20/40.

Keywords

• natural rubber
• unsaturated carboxylate
• ionic supramolecular network
• self-healing
• flexure fatigue resistance