Influence of lanthanum stearate and calcium/zinc stabilizers on stabilization efficiency of dibutyltin dilaurate to polyvinyl chloride

Fang, Long; Song, Yihu; Zhu, Xiaobing; Chen, Shaohui; Du, Peihua; Zheng, Qiang

doi:10.1007/s10118-010-9123-9

Cited by 9 publications

(8 citation statements)

References 37 publications

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“…Therefore, it is urgently necessary to discover environmentally friendly and efficient thermal stabilizers. Recently, calcium/zinc thermal stabilizer (Ca/Zn), as one of the most commonly used metal soap stabilizers, has been playing an important role in this field due to its low toxicity [12,13]. However, an undesired product formed from Ca/Zn in PVC is zinc chloride (ZnCl 2 ), which may accelerate the degradation of PVC and lead to a sudden “zipper dehydrochlorination” attributed to its strong Lewis acidity, so it can produce the “zinc burning” phenomenon [14].…”

Section: Introductionmentioning

confidence: 99%

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

Feng

Zhan

et al. 2019

Polymers

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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.

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Section: Introductionmentioning

confidence: 99%

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

Feng

Zhan

et al. 2019

Polymers

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“…Poly(vinyl chloride) (PVC) is one of the most massive produced and consumed polymers over the world . It has low thermal conductivity of 0.014 W/(m K), high‐flame retardancy, and high chemical resistance and, hence, it has been extensively used as a thermoplastic material . PVC/graphite nanocomposites could be used for attenuation and electromagnetic interference shielding .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, optical, and dielectric properties of polyvinyl chloride/cadmium oxide nanocomposite films

et al. 2014

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Nano‐sized cadmium oxide (CdO) was synthesized using a sol–gel method and mixed with poly(vinyl chloride) (PVC). X‐ray diffraction and high‐resolution transmission electron microscopy measurements indicated that the average particle size of the CdO is about 70.18 nm. Scanning electron microscopy images revealed a good dispersion of CdO nanoparticles on the surface of the PVC films. The optical energy band gap (Eg) showed a decrease from 5.08 to 4.88 eV with increasing the CdO content. The refractive index dispersion of the nanocomposite films was found to obey the single oscillator model. The dispersion parameters were changed by CdO incorporation. According to the frequency and temperature dependence of the dielectric constant (ε′), the observed αa‐relaxation peaks were assigned to the micro‐Brownian motion of the polymer main chains. The influence of CdO nanoparticles content on the ac conductivity and the activation energy of PVC nanocomposite films were discussed. It was found that both dielectric and optical properties were reinforced by the adding of CdO nanoparticles to the PVC matrix. Finally, the results of the present system are compared with those of similar materials. POLYM. COMPOS., 35:1842–1851, 2014. © 2014 Society of Plastics Engineers

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“…Rheological properties and dynamic thermal stability of PVC/LaL 2 /Ca Zn composite stabilizers [27], studies on lanthanum histidine, pentaerythritol and zinc stearate as heat stabilizers for PVC [28], and lanthanum trioxy-purine containing zinc stearate and pentaerythritol as composite heat stabilizers for PVC [29]. The thermal stability of PVC was improved through the synergistic effect of alkaline lanthanum tartrate, zinc stearate and pentaerythritol [30], The effect of lanthanum stearate and calcium zinc stabilizer on the stability efficiency of polyvinyl chloride by dibutyltin dilaurate [31], and the synergistic effect of ethylenediamine bismaleic acid radical and the complex of lanthanum (III) and pentaerythritol on the thermal stability of polyvinyl chloride [32].…”

Section: Introductionmentioning

confidence: 99%

Effect of lanthanum on thermal and mechanical properties of modified polyvinyl chloride film

Chen

Lu²,

Lu³

2023

Mater. Res. Express

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Polyvinyl chloride (PVC) hybrid film containing cerium, tin and folic acid modified nano titanium dioxide is a new functional material with good compatibility, light resistance and heat resistance. In this work, the PVC hybrid film was prepared by replacing cerium with lanthanum. The hybrid film was characterized by thermogravimetric infrared spectroscopy, dynamic mechanical analysis, atomic force microscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, tensile strength and thermal aging. The results show that the initial thermal stability of the hybrid film containing lanthanum is slightly higher than that of the control sample (conversion α< 1.9%). For the same gaseous component plasticizer, the peak intensity of the ester based infrared characteristic group is higher than that of the hybrid film containing lanthanum, indicating that the intermolecular force between lanthanum and plasticizer is greater than that of cerium. In the range of 350-575°C and the wave number range of 2850-3100 cm-1, the peak height of the lanthanum containing film is significantly higher than that of the control sample, which may be due to the difference of the outer layer electrons. The peak intensity of O and C atoms on the surface of the hybrid film containing lanthanum is significantly lower than that of the control sample, indicating that the surface relative concentration of lanthanum atoms is lower than that of cerium atoms. The surface roughness RMS of the hybrid film containing lanthanum is significantly lower than that of the organic tin film, which is the result of the attraction between folic acid modified TiO2, lanthanum and tin and the carbon chlorine bond in PVC. It has the function of a potential ultrafiltration membrane. In addition, the hybrid film containing 1phr lanthanum shows good energy storage modulus and low temperature resistance. The prepared hybrid film shows the characteristics of a potential multi-functional material.

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Influence of lanthanum stearate and calcium/zinc stabilizers on stabilization efficiency of dibutyltin dilaurate to polyvinyl chloride

Cited by 9 publications

References 37 publications

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

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

Synthesis, characterization, optical, and dielectric properties of polyvinyl chloride/cadmium oxide nanocomposite films

Effect of lanthanum on thermal and mechanical properties of modified polyvinyl chloride film

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