JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2014
·Vol. 119
·期 1
·597-603
·
IF 2.206
Xu Xiaopeng,Chen Si,Wu Bozhen,Ma Meng,Shi Yanqin,Wang Xu
The influence of allantoin (ALL) combined with zinc stearate (ZnSt 2 ), calcium stearate (CaSt 2 ), and ZnSt 2 –CaSt 2 (1:1), respectively, in different mass ratios on thermal stability of poly(vinyl chloride) (PVC) was investigated by Congo red test, discoloration test, and thermogravimetric analysis. The results indicated that ALL behaved as a good long-term thermal stabilizer for PVC, which was attributed to its ability to absorb hydrogen chloride released from the degradation of PVC. Moreover, ALL was able to extend the stabilization time of PVC containing ZnSt 2 –CaSt 2 and postpone “zinc burning.” Fourier transform infrared spectra confirmed that ALL can react with ZnCl 2 to produce an inert complex, which is responsible for postponing “zinc burning.”
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2018
·Vol. 137
·期 2
·437-446
·
IF 2.209
Chen Si,Wang Yating,An Zhihang,Ma Meng,Shi Yanqin,Wang Xu
Amitrole is reported as a novel kind of transparent poly(vinyl chloride) (PVC) thermal stabilizer that has both excellent inhibition of “zinc burning” thermal stability and antibacterial ability in this paper, which provide the possibility of applying the whole PVC industry into medical and food packaging, artificial leather, wire and cable, indoor decoration, and so on. From the results of Congo red test, discoloration test, and dynamic thermal stability test, we could clearly find out that amitrole could effectively replace the unstable chlorine atom and inhibit “zinc burning” of transparent PVC, while the long-term stability should be improved. Next, the stabilization mechanism of amitrole was also confirmed. The antibacterial activity of amitrole was measured by the bacteriostatic ring experiments. It was observed that the PVC films had good antibacterial properties after modified by amitrole. At last, optimal design of the amitrole/ZnSt 2 (1:1)/ESBO formulation was studied, which have strong potential as thermal stabilizer to prepare super transparency and antibacterial PVC resin.
研究领域:
材料科学
·
化学工程
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2012
·Vol. 126
·期 3
·980-986
·
IF 1.289
Xiaonan Zhu,Yihu Song,Qiang Zheng
A type of lanthanide (La(III))-containing ionomer based on acrylate processing aid (ACR) for poly (vinyl chloride) (PVC) was synthesized, and influence of the ionomer on thermal stabilization of PVC was investigated with visual color comparison and Congo red methods. Results revealed that the ionomer with a suitable La(III) content behaved as a good costabilizer to PVC. It was able to extend static stabilization time of PVC and postpone “zinc burning.” The stabilizing efficiency of the ionomer to PVC depended on ion content, which was discussed in terms of Eisenberg–Hird–Moore model. Moreover, Fourier transform infrared test verified that this ionomer can react with zinc stearate (ZnSt 2 ) to form some new structures, which is responsible for postponing “zinc burning.” The ionomer and epoxidized soybean oil exhibited a synergistic effect on the stabilizing efficiency of calcium stearate (CaSt 2 )/ZnSt 2 stabilizer to PVC compounds. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2018
·
IF 3.193
Bozhen Wu,Yating Wang,Si Chen,Muyan Wang,Meng Ma,Yanqin Shi,Xu Wang
A novel kind of poly(vinyl chloride) (PVC) thermal stabilizer , zinc dehydroacetate (ZnL 2 ), was designed and synthesized using zinc acetate and dehydroacetic acid (DA) as raw materials, which had a unique "zinc burning" inhibition synergistic effect with calcium stearate (CaSt 2 ) that was 8 times greater than that of the CaSt 2 /ZnSt 2 combination reference stabilizer . The structure and stability of ZnL 2 were confirmed by Fourier-transform infrared, elemental analysis , and thermogravimetric analysis . The stability distinction of ZnL 2 and ZnSt 2 , and the stable effect of the two systems after being combined with CaSt 2 , were investigated by the Congo red test, solution acidity test, and discoloration test. The results showed that in the Congo red test the stability time of ZnL 2 was 8.9 min, which was 1.3 times that of ZnSt 2 , and the stability time of ZnL 2 /CaSt 2 was 13 min, which was 1.4 times that of a traditional Ca/Zn stabilizer. Furthermore, the stability time of ZnL 2 was 36 min in the solution acidity test, which was 2 times higher than that of ZnSt 2 , and the stability time was increased to 196 min after combining it with CaSt 2 , which was 8 times greater than that of the Ca/Zn stabilizer. Moreover, the dehydrochlorination rate of PVC stabilized with ZnL 2 was slower than with other stabilizers. The system with ZnL 2 /CaSt 2 could effectively delay “zinc burning” because of the excellent synergistic effect in the thermal aging test, with a stability time as long as 140 min. At the same time, the mechanism of PVC stabilization by ZnL 2 was studied in two simple experiments, and the stabilization mechanism of ZnL 2 in PVC degradation was speculated on.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Polymer-Plastics Technology and Materials
·
2022
·
IF 2.439
Weihua Ye,Zhi Wen,Chao Chen,Minyan Zhang,Zhengfu Liao
Poly(vinyl chloride) (PVC) has been widely used in many fields due to its excellent comprehensive properties, although its thermal stability is poor. In the article, a urea derivative, cyanoacetylurea, is prepared and its structure is characterized by means of FTIR and 1H-NMR. The stabilization effect of cyanoacetylurea on PVC thermal stabilization is evaluated by thermogravimetric analysis (TGA), thermal aging test and Congo red test. Meanwhile, the processability of PVC stabilized by cyanoacetylurea is investigated through dynamic performance test. Compared with calcium stearate (CaSt2) and zinc stearate (ZnSt2), cyanoacetylurea shows higher stabilization effect on PVC thermal stabilization than CaSt2 and ZnSt2. Also, the synergistic effect of mixtures of cyanoacetylurea, CaSt2 and ZnSt2 on PVC thermal stabilization is investigated. At last, the stabilization mechanism is discussed and cyanoacetylurea is able to absorb hydrogen chloride and to add hydrogen chloride on the carbonyl group, as well as postpone “zinc burning.” The results show that cyanoacetylurea presents a good thermal stabilization efficiency and can be a potential organic thermal stabilizer for PVC.
研究领域:
材料科学
·
化学工程
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）