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Construction of efficient tung-oil-based thermal stabilizers bearing imide and epoxy groups for PVC

机译：高效桐油基热稳定剂轴承酰亚胺和环氧树脂PVC

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摘要

In the present work, tung-oil-derived imide epoxidized esters (GEABTMI) were prepared and used as poly(vinyl chloride) (PVC) co-stabilizers. Characterization results confirmed the successful preparation of the targeted material. The thermal stabilizing effects of CaSt(2)/ZnSt(2)/GEABTMI (St: stearic acid) were compared with those of CaSt(2)/ZnSt(2)/ABTMI {ABTMI: N-(3-amino-benzoic acid) tung-maleimides} and CaSt(2)/ZnSt(2). The experimental results showed that of the materials tested, CaSt(2)/ZnSt(2)/GEABTMI could provide the best long-term thermal stability for PVC. According to the thermal stability results and characterization, the simultaneous introduction of imide and epoxy groups into the GEABTMI structures was responsible for the excellent performance of the stabilized PVC. Furthermore, a mechanism for the stabilization of the PVC/CaSt(2)/ZnSt(2)/GEABTMI system was proposed. According to this proposal, the imide groups trapped the labile chlorine atoms removed from the PVC chain and reacted with the unstable macromolecular radical of PVC, disrupting in this way the radical chain degradation of PVC; and the epoxy group acted as an HCl absorber at the subsequent stages of degradation, avoiding in this way the harmful effects caused by the presence of HCl. Apart from the better stabilization performance, CaSt(2)/ZnSt(2)/GEABTMI yielded a PVC plasticization performance similar to those resulting from the use of the other stabilizers.
机译：另外，在本工作中，桐油衍生的酰亚胺环氧化酯类（GEABTMI）中制备并用作聚（氯乙烯）（PVC）的共稳定剂。鉴定结果证实了有针对性的材料的制备成功。热稳定CAST（2）（2）的效果/硬脂酸锌/ GEABTMI（ST：硬脂酸）：N-（3-氨基 - 苯甲酸与CAST（2）/硬脂酸锌（2）/ {ABTMI的ABTMI比较）桐油 - 马来酰亚胺}和CAST（2）/硬脂酸锌（2）。实验结果表明，该材料测试，CAST（2）/硬脂酸锌（2）/ GEABTMI可以提供对PVC的最佳的长期热稳定性。根据热稳定性结果和表征，同时引入酰亚胺和环氧基团的成GEABTMI结构负责对稳定的PVC的性能优良。此外，对于PVC / CAST（2）/硬脂酸锌（2）的稳定化的机构/提出GEABTMI系统。根据该提议，酰亚胺基团俘获从PVC链除去不稳定的氯原子和与不稳定的大分子自由基PVC的反应，以这种方式PVC的自由基链降解破坏;和环氧基充当在降解的后续阶段为HCl吸收剂，以这种方式避免了由于HCl存在的有害影响。除了更好的稳定性能，CAST（2）/硬脂酸锌（2）/ GEABTMI得到类似于那些由使用其它稳定剂而产生的PVC增塑性能。

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  • 来源
    《New Journal of Chemistry》 |2020年第11期|共9页
  • 作者

    Wang Mei; Li Shouhai; Ding Haiyang; Xia Jianling; Li Mei;

  • 作者单位

    Jiangsu Univ Sch Agr Equipment Engn 301 Xuefu Rd Zhenjiang 212013 Jiangsu Peoples R China;

    Key Lab Biomass Energy &

    Mat Nanjing 210042 Jiangsu Peoples R China;

    Key Lab Biomass Energy &

    Mat Nanjing 210042 Jiangsu Peoples R China;

    Key Lab Biomass Energy &

    Mat Nanjing 210042 Jiangsu Peoples R China;

    Key Lab Biomass Energy &

    Mat Nanjing 210042 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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