Improvement of platinum nanoparticles-immobilized α-zirconium phosphate sheets on tracking and erosion resistance of silicone rubber. (1st November 2019)

• Record Type: Journal Article
• Authors: Liu, Tian; Zeng, Xingrong; Lai, Xuejun; Li, Hongqiang; Wu, Tongyi
• Is Part Of: Composites. Number 176(2019)
• Publication Date: 2019-11-01
• Subjects: Silicone rubber -- Immobilization -- Pt nanoparticles -- Anti-tracking; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2019.107203
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Novel platinum nanoparticles immobilized on exfoliated α-zirconium phosphate (Pt@ZrP-E) was prepared and the structure of Pt@ZrP-E was characterized by SEM, TEM and XRD. The effect of Pt@ZrP-E on anti-tracking and erosion properties of Pt@ZrP-E/SiR was investigated. It was found that Pt@ZrP-E can be uniformly dispersed in SiR and SiR containing 0.3 ph Pt@ZrP-E could pass 1A 4.5 kV level. TG results showed that the residues of Pt@ZrP-E/SiR with 0.3 ph Pt@ZrP-E at 700 °C increased from 43.4 wt% to 54.0 wt% compared to SiR. According to the thermogravimetry-Fourier transform infrared spectroscopy (TG-FTIR) results, the release of carbonyl compounds of Pt@ZrP-E/SiR was decreased but that of CH4 was significantly increased, indicating that Pt@ZrP-E was capable of inhibiting the oxidation of methyl groups and facilitate the cross-linking of SiR under high temperature, which results in the formation of a protective ceramic layer, reduce the ablation from electrical arcing and improve the anti-tracking and erosion properties of SiR. Graphical abstract: Image 1 Highlights: Novel platinum nanoparticles immobilized on α-exfoliated ZrP sheets (Pt@ZrP-E) was prepared and characterized. A small addition amount of Pt@ZrP-E (0.3 phr) could significantly improve tracking and erosion resistance of SiR. The suppression mechanism of Pt@ZrP-E on tracking and erosion resistance of SiR was elaborated.