Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 352, Issue -, Pages 92-100Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2018.03.033
Keywords
High-impact polystyrene; Physical properties; Fire hazard; Ageing test; Natural environment
Categories
Funding
- National Key Research and Development Program of China [2016YFB0302104]
- National Natural Science Foundation of China [51473154, 51303167]
- Guangzhou Science and Technology Program [2014J4100174, 201607020028]
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The current study aims at monitoring the role of the different natural environments on the physical properties and fire hazards of HIPS composites ageing in Turpan and Qionghai. The results indicated that the chromatic aberration and degradation of surface appearance intensified with the increasing ageing time. More flame retardants migrated and were eroded for HIPS composites ageing in Qionghai than those ageing in Turpan, which was caused by the combination of sunlight, high temperature and rainwater in Qionghai. After degradation in the natural environments, the HIPS composites possessed the lower thermal stability and char residues, more toxic gases release, higher peak heat release rate and fire hazard. For example, the peak heat release rate in Qionghai increased by 88.9%, which is much higher than that of in Turpan (55.6%). Moreover, the tensile strength and elongation at break decreased by 46% and 59% for HIPS composites ageing in Turpan and reduced by 53% and 67% for HIPS composites aged in Qionghai, respectively. The results demonstrate that more serious degradation of physical properties and higher fire hazard for HIPS composites ageing in Qionghai than those in Turpan due to the different natural ageing environments.
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