Cure behavior of UP/Org-MMT/MEKP/cobalt octoate nanocomposites by the Dynamic Torsional Vibration Method

Yiyun Cheng; Dazhu Chen; Chunlei Wang; Pingsheng He

doi:10.1002/app.21605

Cure behavior of UP/Org-MMT/MEKP/cobalt octoate nanocomposites by the Dynamic Torsional Vibration Method

Yiyun Cheng
, Dazhu Chen
, Chunlei Wang
, Pingsheng He^*

^*Corresponding author for this work

University of Science and Technology of China

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The cure behavior of unsaturated polyester(UP)/organo-montmorillonite (Org-MMT)/methyl ethyl ketone peroxide (MEKP)/cobalt octoate intercalated nanocomposites at varying temperatures and Org-MMT loadings was investigated by the Dynamic Torsional Vibration Method (DTVM). The apparent kinetic parameters of the cure reaction, including the gelation time t_g, apparent activation energy E_a, and curing rate, etc., were estimated by Flory's gelation theory, non-equilibrium thermodynamic fluctuation theory, and Avrami equation. The theoretical prediction is in good agreement with the experimental re suits obtained by the DTVM. The gelation time t_g increases, and the rate of curing reaction decreases, with increasing Org-MMT loadings, but there is no obvious effect of Org-MMT on the apparent activation energy E_a and the curing process of nanocomposites. A two-step cure process of UP was observed due to the addition of Org-MMT.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Journal of Applied Polymer Science
Volume	97
Issue number	1
DOIs	https://doi.org/10.1002/app.21605
State	Published - 5 Jul 2005
Externally published	Yes

Keywords

Avrami equation
Flory's theory
Gelation time
Nanocomposite
Unsaturated polyester

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@article{519ec30bf81a4a2486bfd4974035946f,

title = "Cure behavior of UP/Org-MMT/MEKP/cobalt octoate nanocomposites by the Dynamic Torsional Vibration Method",

abstract = "The cure behavior of unsaturated polyester(UP)/organo-montmorillonite (Org-MMT)/methyl ethyl ketone peroxide (MEKP)/cobalt octoate intercalated nanocomposites at varying temperatures and Org-MMT loadings was investigated by the Dynamic Torsional Vibration Method (DTVM). The apparent kinetic parameters of the cure reaction, including the gelation time tg, apparent activation energy Ea, and curing rate, etc., were estimated by Flory's gelation theory, non-equilibrium thermodynamic fluctuation theory, and Avrami equation. The theoretical prediction is in good agreement with the experimental re suits obtained by the DTVM. The gelation time tg increases, and the rate of curing reaction decreases, with increasing Org-MMT loadings, but there is no obvious effect of Org-MMT on the apparent activation energy Ea and the curing process of nanocomposites. A two-step cure process of UP was observed due to the addition of Org-MMT.",

keywords = "Avrami equation, Flory's theory, Gelation time, Nanocomposite, Unsaturated polyester",

author = "Yiyun Cheng and Dazhu Chen and Chunlei Wang and Pingsheng He",

year = "2005",

month = jul,

day = "5",

doi = "10.1002/app.21605",

language = "英语",

volume = "97",

pages = "1--7",

journal = "Journal of Applied Polymer Science",

issn = "0021-8995",

publisher = "John Wiley \& Sons Inc.",

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T1 - Cure behavior of UP/Org-MMT/MEKP/cobalt octoate nanocomposites by the Dynamic Torsional Vibration Method

AU - Cheng, Yiyun

AU - Chen, Dazhu

AU - Wang, Chunlei

AU - He, Pingsheng

PY - 2005/7/5

Y1 - 2005/7/5

N2 - The cure behavior of unsaturated polyester(UP)/organo-montmorillonite (Org-MMT)/methyl ethyl ketone peroxide (MEKP)/cobalt octoate intercalated nanocomposites at varying temperatures and Org-MMT loadings was investigated by the Dynamic Torsional Vibration Method (DTVM). The apparent kinetic parameters of the cure reaction, including the gelation time tg, apparent activation energy Ea, and curing rate, etc., were estimated by Flory's gelation theory, non-equilibrium thermodynamic fluctuation theory, and Avrami equation. The theoretical prediction is in good agreement with the experimental re suits obtained by the DTVM. The gelation time tg increases, and the rate of curing reaction decreases, with increasing Org-MMT loadings, but there is no obvious effect of Org-MMT on the apparent activation energy Ea and the curing process of nanocomposites. A two-step cure process of UP was observed due to the addition of Org-MMT.

AB - The cure behavior of unsaturated polyester(UP)/organo-montmorillonite (Org-MMT)/methyl ethyl ketone peroxide (MEKP)/cobalt octoate intercalated nanocomposites at varying temperatures and Org-MMT loadings was investigated by the Dynamic Torsional Vibration Method (DTVM). The apparent kinetic parameters of the cure reaction, including the gelation time tg, apparent activation energy Ea, and curing rate, etc., were estimated by Flory's gelation theory, non-equilibrium thermodynamic fluctuation theory, and Avrami equation. The theoretical prediction is in good agreement with the experimental re suits obtained by the DTVM. The gelation time tg increases, and the rate of curing reaction decreases, with increasing Org-MMT loadings, but there is no obvious effect of Org-MMT on the apparent activation energy Ea and the curing process of nanocomposites. A two-step cure process of UP was observed due to the addition of Org-MMT.

KW - Avrami equation

KW - Flory's theory

KW - Gelation time

KW - Nanocomposite

KW - Unsaturated polyester

UR - https://www.scopus.com/pages/publications/20544470502

U2 - 10.1002/app.21605

DO - 10.1002/app.21605

M3 - 文章

AN - SCOPUS:20544470502

SN - 0021-8995

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SP - 1

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JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

IS - 1

ER -

Cure behavior of UP/Org-MMT/MEKP/cobalt octoate nanocomposites by the Dynamic Torsional Vibration Method

Abstract

Keywords

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