Influence of sizes of rubber particles in latex on mechanical properties of natural rubber filled with carbon black

作者：He, Simin; Zhang, Fuquan; Liu, Shuo; Cui, Haipeng; Chen, Song; Peng, Wenfeng; Chen, Guojing; Liao, Xiaoxue^*; Liao, Lusheng^*

来源：Polymer, 2022, 261: 125393.

DOI：10.1016/j.polymer.2022.125393

• Rubber particles
• Carbon black
• Mechanical properties

The structures and properties of natural rubber (NR) obtained from latex with small and large rubber particles (SRP and LRP) are obviously different, while carbon black (CB)/SRP or CB/LRP composites have rarely been reported. In this work, SRP and LRP are separated from natural rubber latex (NRL). The properties of obtained NR/CB composites are systematically investigated as a function of SRP and LRP mass ratios. It shows that the nitrogen content of SRP (1.32%) is much higher than that of LRP (0.10%). Mechanical properties increase with the increase of LRP content because plenty of agglomerates exist in SRP/CB composite whereas LRP/CB com-posite shows a homogeneous dispersion. Furthermore, a possible model is proposed to illustrate the trans-formations of agglomerates during stretching and dynamic compressing process. This study provides a new perspective for the design of NR materials through the selection of rubber particles in NRL.

• 单位
  海南大学; 中国科学院