Studies on Thermo-oxidative Aging Mechanism of Natural Rubber by Two Dimensional Correlation Infrared Spectrum Method and the Standard Linear Solid Model
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Research Article|更新时间:2021-03-19
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Studies on Thermo-oxidative Aging Mechanism of Natural Rubber by Two Dimensional Correlation Infrared Spectrum Method and the Standard Linear Solid Model
Jing-wei He, Xiu-ying Zhao, Wei Zheng, Ao Wang, Si-zhu Wu. Studies on Thermo-oxidative Aging Mechanism of Natural Rubber by Two Dimensional Correlation Infrared Spectrum Method and the Standard Linear Solid Model. [J]. Acta Polymerica Sinica (2):234-241(2016)
DOI:
Jing-wei He, Xiu-ying Zhao, Wei Zheng, Ao Wang, Si-zhu Wu. Studies on Thermo-oxidative Aging Mechanism of Natural Rubber by Two Dimensional Correlation Infrared Spectrum Method and the Standard Linear Solid Model. [J]. Acta Polymerica Sinica (2):234-241(2016) DOI: 10.11777/j.issn1000-3304.2016.15188.
Studies on Thermo-oxidative Aging Mechanism of Natural Rubber by Two Dimensional Correlation Infrared Spectrum Method and the Standard Linear Solid Model
The thermo-oxidative aging experiments of natural rubber (NR) under different aging times were performed and the aging mechanism was analyzed.The possible group variations were studied by Fourier transform infrared spectroscopy.Meanwhile
two dimensional correlation analysis
which found that the rate of aging productions was esters peroxides ethers
was performed.Magnetic resonance crosslink density test was also carried out
the results showed that the total crosslink density (XLD)
the average molecular weight between two cross-linking point (Mc)
and the transverse relaxation time of crosslinking network (T2) matched well with each other.The XLD increased with the increase of the aging time
indicating that the crosslinking reaction dominated the thermo-oxidative aging of NR.The DSC result showed that with the increase of the aging time
the glass transition temperature(Tg) rose and the glass transition region widened.This result was attributed to the limited movement of chain segments
indicating the thermo-oxidative aging of NR was dominated by crosslinking reactions.Furthermore
compression stress relaxation experiments were carriedout and an amendatory standard linear solid (SLS) model was put forward to describe the compressive stress relaxation behavior of NR.It showed that the thermo-oxidative aging process of NR was dominated by the oxidation and the crosslinking reactions
which corresponded well with the crosslink density and DSC results.
关键词
天然橡胶热氧老化二维相关分析标准线性固态模型
Keywords
Natural rubberThermo-oxidative agingTwo dimensional correlation analysisStandard linear solid model
Preparation and Application of Lignin Grafted Natural Rubber Initiated by CaCl2/H2O2
Preparation and Properties of High Performance Bio-based Elastomer Based on Methyl Methacrylate Grafted Natural Rubber
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Related Institution
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
Key Laboratory of Rubber-Plastics, Ministry of Education, Qingdao University of Science & Technology
华南理工大学 机械与汽车工程学院
材料科学与工程学院 广州 510640South China University of Technology, Guangzhou 510640 School of Materials Science and Engineering
Callege of Materials Science and Engineering, Beijing Engineering Research Center of Advanced Elastomers, Key Laboratory of Carbon Fiber and Functional Polymer, Ministry of Education, Beijing University of Chemical Technology