Correlation between artificial and natural weathering tests on polystyrene‐block‐polybutadiene‐block‐polystyrene block copolymer

Abstract

The effects of artificial and natural weathering tests on the structure and mechanical properties of polystyrene-block-polybutadiene-block-polystyrene (SBS) block copolymer were studied by spectrophotometry, Fourier Transform Infrared (FTIR) Spectroscopy, hardness measurements, and tensile testing. The correlation between artificial and natural weathering tests was also investigated. The results showed that the surface of SBS became yellow with increasing aging time. FTIR spectra confirmed the formation of carbonyl group in the aging process. The elongation at break, the tensile strength, and the tear strength decreased rapidly in the initial stage of the aging process and then leveled off, while the hardness increased with aging time. The correlation between artificial and natural weathering tests in Wanning and Hailaer, in China, could be expressed in terms of t 1 5 2.50t 0 1.99 and t 2 5 1.92t 0 2.56, respectively.

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

“…It is necessary to evaluate the long‐term service performance of polymer materials after natural aging tests in different climate conditions. A series of polymer materials have been subjected to natural aging tests in different conditions . However, no serious attempt has been made to evaluate the effect of aging conditions on the mechanical properties and flame retardancy of FR HIPS composites.…”

Reliability of printed stretchable electronics based on nano/micro materials for practical applications

“…Research in elastomers has intensively studied weathering tests (humidity, temperature, UV, ions) for various commonly used elastomers, including TPU, [168][169][170][171] silicone rubbers, [172][173][174] and block copolymers. 175,176 However, weathering tests for printed stretchable composite conductors have rarely been reported. The incorporation of conductive nano/microparticles may increase the durability of elastomers to aging.…”