A new intumescent insulation emergency material for thermal protection of storage tanks –potassium polyacrylate & organic modified hectorite & intumescent flame retardant. (May 2022)

• Record Type: Journal Article
• Authors: Xie, Weilun; Zhang, Feng; Li, Shuang; Xing, Liping; Zhu, Yulong; Cheng, Jiaji; Cheng, Yunfei; Gao, Zhenrui
• Is Part Of: Journal of loss prevention in the process industries. Volume 76(2022)
• Publication Date: 2022-05
• Subjects: Thermal insulation -- Potassium polyacrylate -- Organic modified hectorite -- Intumescent flame retardant -- Heat transfer; Chemical industries -- Safety measures -- Periodicals; 660.2804
• DOI: 10.1016/j.jlp.2022.104735
• Languages: English
• ISSNs: 0950-4230

Abstract

Abstract: Thermal protection of adjacent equipment such as chemical storage tanks is very important when a fire accident occurs. In this paper, a new intumescent insulation emergency material, potassium polyacrylate & organically modified hectorite & intumescent flame retardant (PPHI), was prepared successfully. The material was characterized by Fourier Transform Infra-Red (FTIR) and X-ray photoelectron spectroscopy(XPS). Thermal insulation performance and thermal stability of the material were studied by cone calorimeter, fire resistance test, scanning electron microscope and energy dispersive spectroscopy (SEM/EDS), and thermogravimetric analysis (TGA), respectively. The results showed that thermal insulation performance of PPHI was the best when the addition content of intumescent flame retardant (IFR) reached 0.54 wt%. The morphology and structures by SEM gave positive evidence that char layers formed from the PPHI composites were improved greatly due to the addition of intumescent flame retardant. Finally, a possible thermal insulation mechanism of PPHI was presented. Highlights: A new type of intumescent insulation emergency material (PPHI) is proposed for thermal protection of storage tanks. The optimum content of intumescent flame retardant in the PPHI material was determined. A series of thermal insulation properties of PPHI material were studied. The possible insulation mechanism of PPHI is proposed.