Lu, Zhi-Xun, et al. IOP Conference Series: Materials Science and Engineering. 740, 1, 2020.
This study outlined the development and efficacy evaluation of a polymeric hindered amine light stabilizer (HALS) derived from the UV 3853 monomer. The primary objective was to synthesize this stabilizer and assess its impact on the mechanical performance of ABS resin composites.
Synthesis of the Polymeric HALS: The polymeric light stabilizer was synthesized via a solution copolymerization process. The reaction utilized UV-3853 (2,2,6,6-tetramethyl-4-piperidyl stearate) as the primary monomer and styrene as a functional comonomer. The process was carried out in a toluene solvent with azobisisobutyronitrile (AIBN) as the initiator. After a controlled reaction, the solvent was removed under reduced pressure, and the product was isolated upon cooling and crystallization.
ABS Composite Preparation: The light stabilizer was melt blended with the ABS pellets at mass fractions of 0.1%, 0.2%, 0.3%, 0.4%, and 0.5%. The blends were then processed into standard test strips through hot press molding.
Key Results: The evaluation of the ABS composites revealed a clear correlation between the stabilizer concentration and mechanical performance. The results demonstrated that the polymeric HALS based on UV 3853 exhibited excellent compatibility with the ABS resin. Among all the tested concentrations, the composite containing 0.1% by mass of the stabilizer displayed the most superior mechanical properties in both impact and tensile testing.
