文献类型：期刊文献

英文题名：The synergistic effect of zinc urate with calcium stearate and commercial assistant stabilizers for stabilizing poly(vinyl chloride)

作者：Ye, Feng[1];Guo, Xiaojie[3];Zhan, Haihua[1];Lin, Jiaxian[1];Lou, Weichong[1];Ma, Xiaotao[1];Wang, Xu[2]

机构：[1]Shaoxing Univ, Coll Text & Garment, Shaoxing 312000, Zhejiang, Peoples R China;[2]Zhejiang Univ Technol, Coll Chem Engn & Mat, Hangzhou 310014, Zhejiang, Peoples R China;[3]Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China

年份：2018

卷号：156

起止页码：193

外文期刊名：POLYMER DEGRADATION AND STABILITY

收录：SCI-EXPANDED(收录号：WOS:000448091400019)、、EI(收录号：20183705807771)、Scopus(收录号：2-s2.0-85053057121)、WOS

基金：This work was financially supported by Natural Science Foundation of China, China (51703129) and Shaoxing Science and Technology Project, China (2017B70045).

语种：英文

外文关键词：Zinc urate; Thermal stability; Poly(vinyl chloride); Synergistic effect; Dibenzoylmethane; Pentaerythritol

外文摘要：Zinc urate (Zn(3)Ur(2)) is synthesized by the reaction of uric acid and zinc acetate, and the structure of the complex is confirmed by Elemental analysis (EA), Thermogravimetric analysis (TGA) and Infrared spectroscopy (FTIR). The thermal stability effect of Zn(3)Ur(2) with its assistant thermal stabilizers about calcium stearate, beta-diketones and polyols on Poly (vinyl chloride) (PVC) is investigated by TG, Congo red test and Discoloration test. The results show that the thermal stability of PVC is increased significantly after Zn(3)Ur(2) is added. Compared with traditional commercial thermal stabilizer such as ZnSt(2), Zn(3)Ur(2) can observably delay the "Zinc burning" of PVC and the complete discoloration time is improved to 150 min. This is mainly attributed to the anions in the structure of Zn(3)Ur(2), which could efficiently absorb the HCl released by PVC and have ability to replace unstable chlorine atoms on structure of PVC. Moreover, the mixing of Zn(3)Ur(2) and calcium stearate (CaSt(2)) can signally promote the long-term thermal stability of PVC. The thermal stability of PVC reaches the optimal state when the ratio of CaSt(2)/Zn(3)Ur(2) is 1.8/1.2 and its total black time arrives at 210 min. In addition, an excellent synergistic effect can be observed when CaSt(2)/Zn(3)Ur(2) is combined with other commercial assistant stabilizers. The initial color and long-term stability of PVC containing CaSt(2)/Zn(3)Ur(2) is markedly improved when Dibenzoylmethane (DBM) is added while Pentaerythritol (PER) can only increase its long-term stability. (C) 2018 Elsevier Ltd. All rights reserved.