Preparation of room temperature vulcanized silicone rubber foam/SiO2 nanocomposite and its fatigue buffering performance. Issue 12 (1st December 2020)

• Record Type: Journal Article
• Authors: Tan, Yu; Yao, Jin; Zhu, Heping
• Is Part Of: Journal of macromolecular science. Volume 57:Issue 12(2020)
• Page Start: 844
• Page End: 853
• Publication Date: 2020-12-01
• Subjects: Silicone rubber foam -- SiO2 -- cell structure -- cushioning properties -- fatigue properties; Polymers -- Periodicals; Polymerization -- Periodicals; 547.7
• DOI: 10.1080/10601325.2020.1799713
• Languages: English
• ISSNs: 1060-1325

Abstract

Abstract: A series of silicone rubber foam (SF)/silicon dioxide (SiO2 ) nanocomposites were prepared by room temperature vulcanization. The effects of SiO2 content on the crosslinking density, cell structure, physical and mechanical properties, thermal properties, dynamic thermomechanical properties of SF/SiO2 nanocomposites were studied. The results indicated that SF/SiO2 6 nanocomposite with 6.0 wt% SiO2 content had the optimal comprehensive performance. The cushioning properties of SF/SiO2 6 nanocomposites were investigated by the static compression test. The cushioning coefficient of SF/SiO2 6 nanocomposite was very close to expanded polyethylene (EPE). Moreover, the fatigue properties of SF/SiO2 6 nanocomposites were investigated by the dynamic compressive fatigue test. SF/SiO2 6 nanocomposite exhibited long fatigue life (6.0 million times) and high height retention rate (99.0%), which was far greater than those of EPE (0.29 million times, 54.5%). The cushioning coefficient of SF/SiO2 6 nanocomposite was almost no changed before and after fatigue test, which was obviously superior to traditional cushioning material EPE. Such SF/SiO2 nanocomposite with excellent fatigue buffering properties could be used as a cushioning material in the packaging field.