Synergistic effect of acetonedicarboxylic acid diethyl ester and calcium/zinc stearates on poly(vinyl chloride) thermal stability

2014 ◽  
Vol 21 (3) ◽  
pp. 228-234 ◽  
Author(s):  
Degang Li ◽  
Linghua Xie ◽  
Jun Zhang ◽  
Xianjin Yu ◽  
Yuanzhang Yu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Synergistic Effect ◽  
Vinyl Chloride ◽  
Diethyl Ester ◽  
Poly Vinyl Chloride

scholarly journals Synthesis and Study of Zinc Orotate and its Synergistic Effect with Commercial Stabilizers for Stabilizing Poly(Vinyl Chloride)

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 194 ◽  
Author(s):  
Feng Ye ◽  
Qiufeng Ye ◽  
Haihua Zhan ◽  
Yeqian Ge ◽  
Xiaotao Ma ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Synergistic Effect ◽  
Vinyl Chloride ◽  
Zinc Stearate ◽  
Precipitation Method ◽  
Long Term Stability ◽  
Poly Vinyl Chloride ◽  
Initial Color ◽  
Thermal Stability Of

Zinc orotate (ZnOr2), which is a new kind of poly(vinyl chloride) (PVC) stabilizer, is prepared in this work through the precipitation method, and its impact on the thermal stability of PVC is measured by thermogravimetric analysis (TG), Congo red test, and discoloration test. The results exhibit that the thermal stability of PVC is positively enhanced after the addition of ZnOr2. In contrast with a commercial thermal stabilizer, zinc stearate (ZnSt2), a noteworthy improvement was observed that ZnOr2 could postpone the “zinc burning” of PVC. This is principally ascribed to the Or anion in the structure of ZnOr2 being able to absorb the HCl released by PVC, and to supersede unstable chlorine atoms in the structure of PVC. In addition, blending ZnOr2 with calcium stearate (CaSt2) in diverse mass ratios can significantly accelerate the thermal stability of PVC. Optimum performance was achieved with a CaSt2:ZnOr2 ratio of 1.8:1.2. Moreover, an outstanding synergistic effect can be observed when CaSt2/ZnOr2 is coupled with other commercial auxiliary stabilizers. The initial color and long-term stability of PVC including CaSt2/ZnOr2 is significantly increased when pentaerythritol (PER) is added, while dibenzoylmethane (DBM) can only improve its long-term thermal stability.

scholarly journals Design and Synthesis of a New Mannitol Stearate Ester-Based Aluminum Alkoxide as a Novel Tri-Functional Additive for Poly(Vinyl Chloride) and Its Synergistic Effect with Zinc Stearate

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1031 ◽  
Author(s):  
Wenyuan Han ◽  
Manqi Zhang ◽  
Degang Li ◽  
Tianbao Dong ◽  
Bing Ai ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Synergistic Effect ◽  
Vinyl Chloride ◽  
Conductivity Measurement ◽  
Test Results ◽  
Aluminum Alkoxide ◽  
Poly Vinyl Chloride ◽  
Functional Additive ◽  
Vis Spectroscopy ◽  
Thermal Stability Of

Thermal stabilizers, lubricant, and plasticizers are three crucial additives for processing poly(vinyl chloride) (PVC). In this study, a new mannitol stearate ester-based aluminum alkoxide (MSE-Al) was designed and synthesized as a novel additive for PVC. The thermal stability and processing performance of PVC stabilized by MSE-Al were evaluated by the Congo red test, conductivity measurement, thermal aging test, ultravioletevisible (UV–Vis) spectroscopy test, and torque rheometer test. Results showed that the addition of MSE-Al could not only markedly improve the long-term thermal stability of PVC, but also greatly accelerate the plasticizing and decrease the balance torque, which demonstrated that MSE-Al possessed a lubricating property. Thus, MSE-Al was demonstrated to be able to provide tri-functional additive roles, e.g., thermal stabilizer, plasticizer, and lubricant. The test results for the thermal stability of PVC indicated that the initial whiteness of PVC stabilized by MSE-Al was not good enough, thus the synergistic effect of MSE-Al with zinc stearates (ZnSt2) on the thermal stability of PVC was also investigated. The results showed that there is an appreciable synergistic effect between MSE-Al and ZnSt2. The thermal stabilization mechanism and synergism effect of MSE-Al with ZnSt2 are then discussed.

A new synergistic effect in the smoke suppression of plasticized poly(vinyl chloride) by mixed-metal Cu(II) oxides

2008 ◽  
Vol 14 (1) ◽  
pp. 16-20 ◽  
Author(s):  
W.-K. Ho ◽  
J.K. Walker ◽  
S.V. Orski ◽  
T.W. Fuller ◽  
A.G. Zestos ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Vinyl Chloride ◽  
Smoke Suppression ◽  
Mixed Metal ◽  
Poly Vinyl Chloride

scholarly journals Effects of Zeolites on Thermal Stability of Poly(vinyl chloride)

Polymer Korea ◽  
2015 ◽  
Vol 39 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Jiayou Xu ◽  
Qinghua Liang ◽  
Xiumei Xian ◽  
Kaidan Li ◽  
Jie Liu
Keyword(s):  
Thermal Stability ◽  
Vinyl Chloride ◽  
Poly Vinyl Chloride ◽  
Thermal Stability Of
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