Continuous mixing process and properties of NR/CB nanocomposites based on elongational rheology. (1st April 2022)

• Record Type: Journal Article
• Authors: Wu, Hao; Lu, Xiang; He, Yue; Qu, Jin-Ping
• Is Part Of: Composites. Number 234(2022)
• Publication Date: 2022-04-01
• Subjects: Elongational rheology -- Natural rubber -- Eccentric rotor -- Nanocomposites -- Continuous mixing; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2022.109705
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: A self-developed biaxial eccentric rotor extruder (BERE) based on elongational rheology was adopted to prepare natural rubber (NR)/carbon black (CB) nanocomposites continuously through one-step process in 1.5 min. The micro morphology, rubber processing analysis, binding rubber content, relaxation time, molecular weight and distribution, vulcanization and mechanical properties of the prepared NR/CB nanocomposites were tested. By comparing with NR/CB nanocomposites prepared by internal mixer, it is proved that BERE continuous mixing process can not only greatly shorten the mixing time, reduce unit energy consumption, but also make the prepared NR/CB nanocomposites have good mixing and dispersion morphology, excellent physical and mechanical properties, high molecular weight retention and binding rubber content. Graphical abstract: A self-developed biaxial eccentric rotor extruder (BERE) based on elongational rheology was adopted to prepare natural rubber (NR)/carbon black (CB) nanocomposites continuously through one-step process in 1.5 min, and the prepared NR/CB nanocomposites have good mixing and dispersion morphology, excellent physical and mechanical properties, high molecular weight retention and binding rubber content. Image 1 Highlights: A self-developed BERE based on elongational rheology was used to prepare NR/CB nanocomposites. The BERE can realize one-step continuous mixing of NR/CB compound in an extremely short time of 1.5 min. The NR/CB nanocomposites prepared by BERE has excellent physical and mechanical properties. The NR/CB nanocomposites prepared by BERE has high molecular weight retention.