引用本文:
汪辉亮, 王春, 陈文琇. HALS和抗氧剂对PE辐射致色的影响[J]. 应用化学,
2001, 18(7): 548-551.
Citation: WANG Hui-Liang, WANG Chun, CHEN Wen-Xiu. Effect of HALS and Antioxidants on Coloration of PE[J]. Chinese Journal of Applied Chemistry, 2001, 18(7): 548-551.
Citation: WANG Hui-Liang, WANG Chun, CHEN Wen-Xiu. Effect of HALS and Antioxidants on Coloration of PE[J]. Chinese Journal of Applied Chemistry, 2001, 18(7): 548-551.
HALS和抗氧剂对PE辐射致色的影响
摘要:
研究了受阻胺类光稳定剂(HALS)及各种抗氧剂对聚乙烯辐射致色的影响.发现HALS和各种抗氧剂均能减少PE的辐射致色.在辐照剂量低于100 k Gy时,添加五甲基HALS的聚乙烯的黄度比添加相应的四甲基HALS的聚乙烯的黄度高;而在辐照剂量高于100 kGy 时,结果相反.在相同辐照剂量下,添加受阻酚类抗氧剂1010的PE的黄度比添加1076或1098的PE的高.添加氢过氧化物分解剂型抗氧剂802的PE的黄度比添加168的略低.受阻酚类抗氧剂防止PE辐射致色的效果一般要比氢过氧化物分解剂型抗氧剂好.并讨论了HALS和抗氧剂防止PE辐射致色的原因.
English
Effect of HALS and Antioxidants on Coloration of PE
Abstract:
The effects of some hindered amine light stabilizers(HALS) and antioxidants on the radiation-induced coloration of polyethylene(PE) are studied by measuring the yellowness index(YI) of PE.It is found that all the HALS and antioxidants examined are effective in preventing PE from radiation-induced coloration.The YIs of PE with pentamethyl HALS(PMPM, PPMPM) are a little higher than YIs of PE added corresponding tetramethyl HALS(TMPM, PTMPM) when the irradiation dose is lower than 100 kGy, but when the irradiation dose is higher than 100 kGy, the YI of PE added pentamethyl HALS is low.Pentamethyl HALS is more effective in preventing PE from radiation-induced coloration when irradiation dose is high.The YI of PE added Irganox 1010 is the highest among those of PE added hindered phenol antioxidant Irganox 1076, Irganox 1010 or Irganox 1098 separately.The YI of PE added Irganox PS802 is lower than that of PE added Irgafos 168.Commonly, hindered phenol antioxidants are more effective than hydroperoxide decomposer antioxidants in preventing PE from radiation-induced coloration.The role of HALS and antioxidants played in preventing PE from radiation-induced coloration is discussed.
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