Preparation of Piperidine Rare Earth Stabilizer and Its Function on PVC

YANG Yu-xuan; LIU Zhao-gang; ZHAO Jin-gang; HUANG Xu-bo; CHEN Ming-guang; HU Yan-hong; WU Jin-xiu; FENG Fu-shan

doi:10.14028/j.cnki.1003-3726.2022.12.014

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Preparation of Piperidine Rare Earth Stabilizer and Its Function on PVC

更新时间：2022-10-17

- Preparation of Piperidine Rare Earth Stabilizer and Its Function on PVC
- Polymer Bulletin Vol. 35, Issue 12, Pages: 121-128(2022)
- 作者机构：
  
  1.内蒙古科技大学材料与冶金学院，包头　014010
  2.轻稀土资源绿色提取与高效利用教育部重点实验室，包头　014010
  3.内蒙古自治区稀土湿法冶金与轻稀土应用重点实验室，包头　014010
  4.内蒙古自治区包头稀土研究院，包头　014030
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2022.12.014
  CLC：
- Published：20 December 2022，
  
  Received：05 August 2021，
  
  Revised：10 September 2021，
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YANG Yu-xuan, LIU Zhao-gang, ZHAO Jin-gang, HUANG Xu-bo, CHEN Ming-guang, HU Yan-hong, WU Jin-xiu, FENG Fu-shan. Preparation of Piperidine Rare Earth Stabilizer and Its Function on PVC. [J]. Polymer Bulletin 35(12):121-128(2022)
DOI：

YANG Yu-xuan, LIU Zhao-gang, ZHAO Jin-gang, HUANG Xu-bo, CHEN Ming-guang, HU Yan-hong, WU Jin-xiu, FENG Fu-shan. Preparation of Piperidine Rare Earth Stabilizer and Its Function on PVC. [J]. Polymer Bulletin 35(12):121-128(2022) DOI： 10.14028/j.cnki.1003-3726.2022.12.014.

摘要

以异哌啶酸、硝酸镧、氨水为原料合成异哌啶酸镧

经傅里叶红外光谱分析(FTIR)、元素分析、热分析(TG-DSC)等表征手段

确定其分子式为La(C

)

(NO

)

·H

O。将异哌啶酸镧与常用热稳定剂进行热稳定性能的比较。为了使异哌啶酸镧的热稳定性进一步提高

将异哌啶酸镧与硬脂酸锌、季戊四醇进行二元复配和三元复配。当异哌啶酸镧∶硬脂酸锌∶季戊四醇的复配质量比为2∶1∶2时

其热稳定时间为42 min

并且抗变色性有较大提高。异哌啶酸镧可以吸收聚氯乙烯(PVC)降解产生的Cl

与稀土离子结合生成LaCl

从而抑制PVC的降解

达到热稳定的效果。

Abstract

Lanthanum isonipecotic acid is synthesized from isonipecotic acid

Lanthanum nitrate

hexahydrate and aqueous ammonia.The molecular formula is determined to be La(C

)

(NO

)

·H

O by Fourier infrared spectra analysis (FTIR)

elemental analysis

and thermogravimetric analysis (TG-DSC). The heat stability of lanthanum isonipecotic acid is compared with that of common heat stabilizers. In order to further improve the heat stability of lanthanum isonipecotic acid

it was compounded with zinc stearate and pentaerythritol in binary and ternary combinations. When the ratio of lanthanum isonipecotic acid/zinc stearate/pentaerythritol is 2/1/2

the heat stability time is 42 min

and the anti-tarnishing property has been greatly improved. Lanthanum isonipecotic acid can absorb Cl

produced by poly(vinyl chloride) (PVC) degradation and combine with rare earth ions to form LaCl

thus inhibiting the degradation of PVC and achieving the effect of heat stability.

关键词

异哌啶酸镧热稳定剂聚氯乙烯稀土热稳定机理

Keywords

Lanthanum isonipecotic acidThermal stabilizerPoly(vinyl chloride)Rare earthMechanism of thermal stabilization

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