Zn-Al-La hydrotalcite-like compounds as heating stabilizer in PVC resin

Wen, Runjuan; Yang, Zhanhong; Chen, Hongyan; Hu, Youwang; Duan, Jian

doi:10.1016/s1002-0721(12)60151-3

Cited by 44 publications

(35 citation statements)

References 16 publications

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“…The precipitation formed by certain amount of Ca(OH) 2 and Al(OH) 3 was transferred into hydrocalumite by adding Na 2 CO 3 with continuous stirring for several hours, which was totally based on the steps described by Wen et al 23 The as-prepared hydrocalumite was modified in aqueous solution. The precipitation formed by certain amount of Ca(OH) 2 and Al(OH) 3 was transferred into hydrocalumite by adding Na 2 CO 3 with continuous stirring for several hours, which was totally based on the steps described by Wen et al 23 The as-prepared hydrocalumite was modified in aqueous solution.…”

Section: The Preparation and Modification Of Hydrocalumitementioning

confidence: 99%

“…It can be seen clearly from Figure 16 that pure PVC owns the worst stability that it got completely dark only 20 min later. 2,18 2. By comparing the PVC strips with nonmodified hydrocalumite and modified hydrocalumite, it can be seen clearly that the latter owns better heat stability than the former, indicating a successful modification.…”

Section: Effect Of Hydrocalumite Modification On Thermal Stabilitymentioning

confidence: 99%

“…1,2 However, there exists a shortage in PVC that its thermal stability is too poor to be applied in high temperature, which is mainly due to the structural deficiency of PVC itself. What is more, because of its excellent physical and chemical properties, PVC resin has been widely used in manufacturing industry, construction industry, agriculture, and other industries.…”

Section: Introductionmentioning

confidence: 99%

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The effect of sodium stearate‐modified hydrocalumite on the thermal stability of poly(vinyl chloride)

Yang

2017

J of Applied Polymer Sci

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Hydrocalumite as a new-type of thermal stabilizer used in poly(vinyl chloride) resin had been well prepared by using precipitation transformation method. The as-prepared hydrocalumite was then modified by sodium stearate in different condition including temperature, stirring time, and the amount of sodium stearate. Scanning electron microscopy tests demonstrate that hydrocalumite had been well modified. Illustrated by activation grade, the static oven heat aging experiments and the rate of thermal weight loss, it turns out that the best modification condition is when the addition of sodium stearate is 6% of hydrocalumite (wt), the reacting temperature is 90 8C, and the stirring time is 100 min. Static thermal aging test shows that the aging time got improved at least 30 min under the high temperature of 190 8C, and the time when Congo red test paper began to turn blue for modified hydrocalumite is 20 min longer than that of unmodified hydrocalumite. All results turn out to be that the hydrocalumite modified by sodium stearate in such condition had good compatibility with poly(vinyl chloride) and presented better thermal stability.

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Section: The Preparation and Modification Of Hydrocalumitementioning

confidence: 99%

Section: Effect Of Hydrocalumite Modification On Thermal Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effect of sodium stearate‐modified hydrocalumite on the thermal stability of poly(vinyl chloride)

Yang

2017

J of Applied Polymer Sci

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“…reported the synthesis of a Ca–Al–X (where X is

{NO}_{3}^{-}

{CO}_{3}^{2 -}

, Cl − ,

{SO}_{4}^{2 -}

, or

{PO}_{4}^{3 -}

) series of hydrotalcites and their characterization and application in PVC; they also drew the conclusion that a Ca–Al–X series of hydrotalcites had a predominant effect on the thermal stability of PVC. What is more, in our previous studies, hydrotalcite and its derivatives have been applied to PVC as a thermal stabilizer. All of the previous studies have shown that hydrotalcites can be used as a heat stabilizer in PVC.…”

Section: Introductionmentioning

confidence: 99%

Intercalated hydrotalcite‐like materials and their application as thermal stabilizers in poly(vinyl chloride)

Yan

Yang

2017

J of Applied Polymer Sci

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The preparation of hydrotalcites with traditional materials is often based on the corresponding salts and alkali solutions. In this study, to facilitate industrial synthesis and take advantage of the lower cost during the process, a Ca–Al–HPO3–layered double hydroxide (LDH) was directly synthesized with calcium hydroxide, aluminum hydroxide, and sodium phosphite powders. X‐ray diffraction, Fourier transform infrared, and scanning electron microscopy analyses confirmed the successful synthesis of the phosphite‐intercalated hydrotalcite. Compared with Ca–Al–CO3–LDH, Ca–Al–HPO3–LDH enhanced the heat stability of poly(vinyl chloride) (PVC) in terms of both short‐term and long‐term stability because phosphite replaced the allyl chloride and reacted with the conjugated double bonds in PVC; this was deduced through a thermal aging test. The composites of Ca–Al–HPO3–LDH, zinc stearate, and calcium stearate had a synergetic effect when added to PVC and exhibited excellent thermal stability. In addition, the phosphite reacted with ZnCl2 in case of the phenomenon of zinc burning. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44896.

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“…Hydrotalcite, modified zeolite and montmorillonite are effective stabilizers of PVC compositions [195][196][197][198][199][200][201][202][203][204][205]. 11.3.3.1 Properties and applications of commercial stabilizers…”

mentioning

confidence: 99%

Principles of Stabilization

Wypych¹

2015

PVC Degradation and Stabilization

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Zn-Al-La hydrotalcite-like compounds as heating stabilizer in PVC resin

Cited by 44 publications

References 16 publications

The effect of sodium stearate‐modified hydrocalumite on the thermal stability of poly(vinyl chloride)

The effect of sodium stearate‐modified hydrocalumite on the thermal stability of poly(vinyl chloride)

Intercalated hydrotalcite‐like materials and their application as thermal stabilizers in poly(vinyl chloride)

Principles of Stabilization

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