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Flammability and thermal properties of high density polyethylene/paraffin hybrid as a form‐stable phase change material
Author(s) -
Cai Yibing,
Hu Yuan,
Song Lei,
Tang Yong,
Yang Rui,
Zhang Yinping,
Chen Zuyao,
Fan WeiCheng
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.22065
Subject(s) - fire retardant , materials science , high density polyethylene , differential scanning calorimetry , flammability , cone calorimeter , composite material , polyethylene , phase change material , thermal stability , char , thermogravimetry , thermogravimetric analysis , calorimetry , chemical engineering , combustion , thermal , organic chemistry , chemistry , thermodynamics , physics , engineering
In this study, form‐stable phase change material (PCM)–high density polyethylene (HDPE)/paraffin hybrid with different flame‐retardant systems are prepared by using twin‐screw extruder technique. This kind of form‐stable PCM is made up of paraffin (a dispersed phase change material) and a HDPE (a supporting material). Their structures and flammability properties are characterized by scanning electronic microscope (SEM) and cone calorimetry. Thermal stability is shown by thermogravimetry analysis (TGA) and its latent heat is given by differential scanning calorimeter (DSC) method. SEM results show that the HDPE forms a three‐dimensional net structure and the paraffin is dispersed in it. The peak of heat release rate (HRR) of the flame‐retardant form‐stable PCM decreases markedly. In TGA curves, although the onset of weight loss of flame‐retardant form‐stable PCMs occur at a lower temperature than that of form‐stable PCM, flame‐retardant form‐stable PCMs produce a large amount of char residue at 700°C. DSC results show that the addition of flame retardant has little effect on the phase change latent heat of PCM. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 1320–1327, 2006