Effect of thermal aging on impact strength acrylonitrile‐butadiene‐styrene (ABS) terpolymer

Abstract

A high speed puncture impact apparatus was used to measure impact loss in thermally aged ABS (acrylonitrilebutadiene-styrene) as a function of time and temperature. Impact energy values decreased to a low level and degraded surface layer thickness increased as a function of aging time at three aging temperatures. Systematic removal of surface layers from thermally aged samples progressively increased impact energy values to control levels. Infrared spectroscopy, differential scanning calorimetry and molecular weight data indicate that degradation occurs in the rubber, graft and rigid phases at different times during the thermal aging period. Microscopy results show a critical degraded layer thickness which causes brittle failure of the entire sample.

Fracture behavior of additively manufactured acrylonitrile butadiene styrene (ABS) materials

“…ABS is an amorphous, grafted thermoplastic terpolymer containing acrylonitrile (A), styrene (S), and polybutadiene (PB) components. A wide range of ABS structures and properties are possible depending on the ratios of each component and the processing history [4,5] . A common and preferable ABS microstructure consists of a continuous and stiff A-S phase with compliant PB particle inclusions between 0.2 -50 µm in diameter [6].…”

“…Since the arresting hole is located at a distance of 5 mm from the initial crack, its presence does not significantly alter the development of the plastic zone or the fracture toughness analysis.3.2.3 Cross-laminar fracture testing (horizontally oriented SENB specimens)Cross-laminar fracture tests were performed on horizontally fabricated SENB specimens. Unlike inter-laminar fracture tests, crack propagation in cross-laminar fracture tests was ductile in nature, requiring elastic-plastic fracture analysis (Eqns [4][5][6]…”

An ABS Recycled Coating for Corrosion Protection and Conservation of Copper and Alloys of Cultural or Historic Value

“…R n values indicate that even when initially the protection of the ABS coating is slightly below in relation to the varnish, at some point in time, the parameter values are inverted and both coatings reach very similar values. Being the noise resistance independent of the frequency, the values obtained and presented in the noise impedance spectra are related totally to the coating performance [47,48]. The coupon protected with varnish shows blue-green corrosion products while the one coated with ABS-3 stayed in the copper color range.…”

“…However, thermo-oxidation processes can degrade this polymer due to hydrogen subtracted by oxygen [46]. Two models explain the ABS degradation: heat aging or physical aging [47][48][49][50]. It is well known that this polymer can be dissolved in organic solvents; also, thin layers become practically transparent.…”

Electrochemical Evaluation of a Recycled Copolymer Coating for Cultural Heritage Conservation Purposes

“…The mechanical and chemical properties of ABS have been studied demonstrating its durability, elongation to break, and impact resistance. However, thermooxidative processes can degrade this polymer due to hydrogen abstraction by oxygen [13]. Two models explain the ABS degradation: heat aging or physical aging [14][15][16][17].…”