摘要
研究了在辐照条件下受阻胺光稳定剂(HALS)、各种抗氧剂及HALS与抗氧剂并用等对聚丙烯(PP)的黄度(YI)的影响。实验发现,添加五甲基HALS的聚丙烯的黄度均小于添加相应的四甲基HALS的聚丙烯的黄度。当抗氧剂Irganox1076和PDS并用时,聚丙烯的黄度比单独添加1076或PDS的聚丙烯的黄度都低。单独添加1076的聚丙烯的黄度比添加抗氧剂Irgafos168或IrganoxPS-802的聚丙烯的黄度都小。当PDS和Irganox1076并用时聚丙烯的黄度小于PDS和Irgafos168或IrganoxPS-802并用时的黄度。辐照后聚丙烯的黄度开始随放置时间很快降低,但随时间增加,黄度的变化逐渐减慢,最后基本保持不变。对结果进行了分析和讨论。
The effects of hindered amine light stabilizers (HALS), antioxidants and the combination of HALS and antioxidants on the radiation-induced discoloration of polypropylene (PP) are studied. The yellow index ( YI ) of PP added pentamethyl HALS is found to be lower than that of PP added corresponding tetramethyl HALS at the same radiation dose. The YI of PP added antioxidant Irganox 1076 is lower than that of PP added Irgafos 168 or Irganox PS-802. When Irganox 1076 and PDS are used together, the YI of PP is lower than that of Irganox 1076 or PDS used separately. YI of PP decreases with storage time after irradiation. The results are discussed.
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
北大核心
1999年第2期70-75,共6页
Journal of Radiation Research and Radiation Processing
基金
北京师范大学青年科学基金
关键词
受阻胺光稳定剂
抗氧剂
辐射致色
聚丙烯
Hindered amine light stabilizer(HALS), Radiation-induced discoloration, Antioxidant, Polypropylene