Influence of aging conditions on the mechanical properties and flame retardancy of HIPS composites

Abstract

In this study, we evaluate the changes in physical properties and flame retardancy of HIPS composites after natural aging tests in Turpan (high sunlight radiation dose and dry) and Qionghai (high temperature and rainy) in China for 21 months. The HIPS composite aged in Turpan revealed a higher chromatic aberration than that in Qionghai due to the higher sunlight radiation dose. After aging tests for 21 months, the mechanical properties and the peak heat release of the HIPS composite aged in Qionghai decreased by more than 50% and increased by 39.7%, respectively, results that were worse than for the HIPS composite in aged Turpan. This was related to the combined effects of light, temperature, rain, and moisture in Qionghai leading to more severe degradation of HIPS composites, which results in breaking of the polymer chains and migration and erosion of the flame retardant. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46339.

Improving the resistance to hydrothermal ageing of flame-retarded PLA by incorporating miscible PMMA

“…easily reachable to water. The same conclusions were recently obtained concerning HIPS composites [58]. Authors showed that during ageing, a migration of phosphorus to the surface of the samples occurred, followed by erosion mechanism.…”

Degradation of Styrenic Plastics During Recycling: Impact of Reprocessing Photodegraded Material on Aspect and Mechanical Properties

“…Tiganis et al [45] found that thermooxidation of ABS was also a surface phenomenon but was sufficient to degrade impact and tensile properties. Wang et al [46] found strong discoloration and important loss of mechanical properties and flame retardancy of naturally weathered HIPS where photooxidation is the main mechanism. Vilaplana et al [47] highlighted that thermooxidation could be more detrimental to HIPS than reprocessing (grinding-extrusion) steps.…”