Jiang, Tiankai published the artcileComparison of UV resistance of HDPE added with hindered amine light stabilizers with different molecular structures, Recommanded Product: Tris(2,4-di-tert-butylphenyl) phosphite, the publication is Polymers for Advanced Technologies (2021), 32(3), 1288-1300, database is CAplus.
UV resistance of versatile plastics has been received attention for a long time, especially of high-d. polyethylene (HDPE). It was studied systematically that hindered amine light stabilizer (HALS) with different mol. structures had an effect on the UV resistance of HDPE. The mol. weights of the two HALS were 423.7 and 2100-3000 g/mol, resp. It was found that the low-mol.-weight HALS outperforms the polymeric one of HDPE matrix in UV resistances due to the different mol. structures. HDPE-containing HALS with different mol. structures followed different degradation mechanisms during artificial accelerated aging. In addition, HDPE matrix composites with low-mol.-weight HALS show better mech. properties than the polymeric one because of the decrease of delay of mol. chain fracture during irradiation Therefore, HDPE matrix composites with low-mol.-weight HALS have better UV degradation resistance. However, polymeric HALS has the advantage of hard to move out of the sample surface.
Polymers for Advanced Technologies published new progress about 31570-04-4. 31570-04-4 belongs to esters-buliding-blocks, auxiliary class Mono-phosphine Ligands, name is Tris(2,4-di-tert-butylphenyl) phosphite, and the molecular formula is C42H63O3P, Recommanded Product: Tris(2,4-di-tert-butylphenyl) phosphite.
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