Effect of Rare Earth Complexes Containing Benzophenone Structure on Light Stability of PVC

被引：0
|
作者：
Huang X. [1 ,2 ]
Liu Z. [1 ,2 ]
Du G. [1 ,2 ]
Chen M. [1 ,3 ]
Hu Y. [1 ,2 ]
Wu J. [1 ,2 ]
机构：
[1] School of Materials and Metallurgy, Inner Mongolia University of Science & Technology, Baotou
[2] Inner Mongolia Key Laboratory of Rare Earth Hydrometallurgy and Light Rare Earth Application, Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources Ministry of Education, Baotou
[3] Baotou Research Institute of Rare Earth, Baotou
来源：
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2024年 / 42卷 / 01期
关键词：
benzophenone structure; heat stabilizer; light stabilizer; polyvinyl chloride; rare earths;
D O I：
10.11785/S1000-4343.20240117
中图分类号：
学科分类号：
摘要：
Rare earth stabilizers with both thermal and light stability are of great significance for reducing PVC processing costs，improving PVC production efficiency and opening up the application fields of rare earth stabilizers. Therefore，the effects of 2，4-dihydroxybenzophenone lanthanum （LBP），2-benzoylbenzoate lanthanum （LBA）and ternary composite stabilizers on the light stability of PVC were studied through artificial accelerated UV aging experiments and outdoor natural light aging experiments. The results show that the weight loss rates of PVC sheets with LBP and LBA（LBP∶ZnSt2∶PE=2∶1∶2，LBA∶ZnSt2∶PE=1∶1∶3）are 2.7% and 6.2% respectively after 10 d of artificial UV aging，and the retention rates of tensile strength are 87.6% and 81.8% respectively after 35 d of natural light aging. The composite stabilizer improves the light stability of PVC best. The rare earth stabilizer can absorb the hydrogen chloride produced by PVC degradation，reduce the concentration of hydrogen chloride，so as to weaken the catalytic effect of hydrogen chloride on PVC degradation，inhibit PVC from removing HCl to form double bonds，and prevent the double bonds from forming peroxides to form carbonyl compounds under the action of oxygen. © 2024 Chinese Society of Rare Earths. All rights reserved.
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页码：160 / 167
页数：7
相关论文
共 23 条
  • [1] Banar M，, Zdemir A N，, Zkan A，, Gunkaya Z., Selection of waste thermoplastics for shape stabilized phase change materials using multicriteria techniques［J］, Int. J. Energy Res, 46, 3, (2022)
  • [2] Yu J, Li M X., Preparation and synergistic properties of lanthanum sorbate composite heat stabilizer［J］, Journal of the Chinese Society of Rare Earths, 37, 6, (2019)
  • [3] Zhang W，, Dong D D，, Wei Z，, Ma Q Q., Synthesis of lanthanum ricinoleate and its effect on thermal stability and mechanical properties in PVC［J］, J. Rare Earths, 32, 11, (2014)
  • [4] Liu H., A citric acid/cysteine based bioadditive for plasticization and enhancing UV shielding of poly（vinyl chloride）［J］, Polym. Int, 71, 2, (2022)
  • [5] Yu S J, Wei D L, Zheng G J, Zhu Y F, Mo X Z., Study on UV accelerated aging properties of PVC/modified sisal fiber wood plastic composites［J］, China plastics, 30, 3, (2016)
  • [6] Rabinovitch E B，, Dorsch J L，, Summers J W., Role of organotin mercaptide stabilizers in heat and light stability of PVC［J］, J. Vinyl Technol, 8, 2, (2010)
  • [7] Liu J P，, Song X，, Fang L, Yang J Z., Application experiment of rare earth maleate monoester as PVC heat stabilizer［J］, China Plastics, 16, 1, (2002)
  • [8] Zhang N, Shen Y L., Study on the effect of rare earth laurate composite heat stabilizer on the thermal stability of PVC ［J］, Journal of the Chinese Society of Rare Earths, 32, 3, (2014)
  • [9] Li X M, Zhang N., Study on the combination and application of PVC stearic acid light rare earth heat stabilizer ［J］, Journal of the Chinese Society of Rare Earths, 33, 3, (2015)
  • [10] Jiang G S., Synthesis and Application of a New PVC Stabilizer with Thermal and Light Stability ［D］, (2017)
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