TY - JOUR
T1 - Application of antioxidant and ultraviolet absorber into HDPE
T2 - Enhanced resistance to UV irradiation
AU - Jiang, Tiankai
AU - Qi, Yanli
AU - Wu, Yuchen
AU - Zhang, Jun
N1 - Publisher Copyright:
© 2019 Jiang et al.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Herein, high density polyethylene (HDPE) matrix was applied as the polymer matrix for its excellent overall performance and low price. In the study, antioxidants (0.5 phr) and ultraviolet absorber (1 phr) were added into the polymer matrix (100 phr) to investigate their influence on UV resistance, respectively. The macroscopic properties and microstructure changes of the samples were both investigated through the characterizations of Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), mechanical properties and thermogravimetric analysis (TGA). This work also conceived the three methods of capturing free radicals generated by photoaging, decomposing peroxides generated by photoaging, and absorbing ultraviolet light to achieve anti-aging effects. The results showed that the UV absorber improves the UV resistance of the material better than the antioxidant. After irradiation for 600 h under the aging condition of 0.51 w/m2@ λ = 340 nm, the samples added with UV absorber also still maintain their mechanical properties at a high level. For comparison, the samples added with antioxidants presents poor mechanical properties only after irradiation for 200 h. Besides, the crystallinity of HDPE and HDPE added with antioxidant significantly increased after irradiation, but the crystallinity of HDPE introduced with UV absorber presents slight changes before and after irradiation. Meanwhile, all the irradiated samples also maintained the original excellent thermal stability. According to the obtained results, the aging mechanism was also analyzed.
AB - Herein, high density polyethylene (HDPE) matrix was applied as the polymer matrix for its excellent overall performance and low price. In the study, antioxidants (0.5 phr) and ultraviolet absorber (1 phr) were added into the polymer matrix (100 phr) to investigate their influence on UV resistance, respectively. The macroscopic properties and microstructure changes of the samples were both investigated through the characterizations of Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), mechanical properties and thermogravimetric analysis (TGA). This work also conceived the three methods of capturing free radicals generated by photoaging, decomposing peroxides generated by photoaging, and absorbing ultraviolet light to achieve anti-aging effects. The results showed that the UV absorber improves the UV resistance of the material better than the antioxidant. After irradiation for 600 h under the aging condition of 0.51 w/m2@ λ = 340 nm, the samples added with UV absorber also still maintain their mechanical properties at a high level. For comparison, the samples added with antioxidants presents poor mechanical properties only after irradiation for 200 h. Besides, the crystallinity of HDPE and HDPE added with antioxidant significantly increased after irradiation, but the crystallinity of HDPE introduced with UV absorber presents slight changes before and after irradiation. Meanwhile, all the irradiated samples also maintained the original excellent thermal stability. According to the obtained results, the aging mechanism was also analyzed.
KW - Antioxidant
KW - Crystallization
KW - Polyolefins
KW - UV absorber
KW - UV resistance
UR - http://www.scopus.com/inward/record.url?scp=85073735620&partnerID=8YFLogxK
U2 - 10.1515/epoly-2019-0053
DO - 10.1515/epoly-2019-0053
M3 - 文章
AN - SCOPUS:85073735620
SN - 1618-7229
VL - 19
SP - 499
EP - 510
JO - E-Polymers
JF - E-Polymers
IS - 1
ER -