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1
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Zeng F, Guo X, Sun L, He X, Zeng Z, Liu Z. Non-isothermal crosslinking of ethylene vinyl acetate initiated by crosslinking agents: kinetic modelling. RSC Adv 2022; 12:15623-15630. [PMID: 35685181 PMCID: PMC9126645 DOI: 10.1039/d2ra01994a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/17/2022] [Indexed: 12/02/2022] Open
Abstract
The non-isothermal crosslinking process of ethylene vinyl acetate (EVA) initiated by several crosslinking agents was studied by using differential scanning calorimetry (DSC). The crosslinking agent tert-butylperoxy 2-ethylhexyl carbonate (TBEC) exhibited much shorter reaction time and lower reaction temperature. The effect of the crosslinking agent TBEC on the EVA crosslinking process was further analyzed by using Avrami, Ozawa, Mo and Flynn-Wall-Ozawa (FWO) methods, respectively. The small fluctuations in the values of Avrami exponent n and Mo parameter a indicate that the EVA crosslinking mechanism is basically unchanged with increasing heating rate and crosslinking agent content. The change of the Ozawa exponent m is presumably due to the increase in viscosity of EVA/TBEC samples during the crosslinking process. The heating/cooling function F(T) values and the activation energy Ea are dependent on the conversion rate α. In addition, Ea shows irregular changes in the early stages of crosslinking, and increases with the increase of conversion rate α in the later stages of crosslinking. The kinetic parameter Ea of EVA crosslinking reaction initiated by a peroxide crosslinking agent showed irregular changes in the early stage of crosslinking, and increase with the increase of conversion rate α in the later stage of crosslinking.![]()
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Affiliation(s)
- Fanwei Zeng
- School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Xing Guo
- School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Li Sun
- School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Xuelian He
- School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Zuoxiang Zeng
- School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Zhen Liu
- School of Chemical Engineering, East China University of Science and Technology Shanghai 200237 China
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Shafeeq VH, Unnikrishnan G. Experimental and theoretical evaluation of mechanical, thermal and morphological features of EVA-millable polyurethane blends. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-2027-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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3
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Zhong R, Zhang Z, Zhao H, He X, Wang X, Zhang R. Improving Thermo-Oxidative Stability of Nitrile Rubber Composites by Functional Graphene Oxide. MATERIALS 2018; 11:ma11060921. [PMID: 29848944 PMCID: PMC6025397 DOI: 10.3390/ma11060921] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/15/2018] [Accepted: 05/23/2018] [Indexed: 11/30/2022]
Abstract
Graphene oxide (GO), modified with anti-aging agent p-phenylenediamine (PPD), was added into nitrile rubber (NBR) in order to improve the thermo-oxidative stability of NBR. The modification of GO and the transformation of functional groups were characterized by Fourier transform infrared spectroscopy (FTIR), Raman, and X-ray diffraction (XRD). Mechanical performances of NBR composites before and after the thermo-oxidative aging were recorded. The results of dynamic mechanical analysis (DMA) show an increased storage modulus (G’) and a decreased value of area of tan δ peak after introducing modified GO into NBR. It indicates that filler particles show positive interaction with molecular chains. The thermo-oxidative stability of composites was investigated by thermogravimetric analysis (TG) and differential scanning calorimetry (DSC). Then, the thermo-oxidative aging kinetic parameters were obtained by the Flynn–Wall–Ozawa (FWO) equation. The results of aging tests show that the thermo-oxidative stability of rubber matrix increases obviously after introducing GO–PPD. In addition, mechanical properties (tensile strength and elongation at break) of both before and after aged NBR/GO–PPD composites were superior to that of NBR. This work provides meaningful guidance for achieving multifunction thermo-oxidative aging resistance rubber composites.
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Affiliation(s)
- Rui Zhong
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Zhao Zhang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Hongguo Zhao
- Petrochemical Research Institute, PetroChina, Lanzhou 730060, China.
| | - Xianru He
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Xin Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China.
| | - Rui Zhang
- Institut für Physik, Universität Rostock, Albert-Einstein-Str. 23-24, 18051 Rostock, Germany.
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Li T, Shi Z, He X, Jiang P, Lu X, Zhang R, Wang X. Aging-Resistant Functionalized LDH⁻SAS/Nitrile-Butadiene Rubber Composites: Preparation and Study of Aging Kinetics/Anti-Aging Mechanism. MATERIALS 2018; 11:ma11050836. [PMID: 29783656 PMCID: PMC5978213 DOI: 10.3390/ma11050836] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/13/2018] [Accepted: 05/15/2018] [Indexed: 11/16/2022]
Abstract
With the aim of improving the anti-aging properties of nitrile-butadiene rubber (NBR), a functional organic filler, namely LDH⁻SAS, prepared by intercalating 4-amino-benzenesulfonic acid monosodium salt (SAS) into layered double hydroxides (LDHs) through anion exchange, was added to nitrile-butadiene rubber (NBR), giving the NBR/LDH⁻SAS composites. Successful preparation of LDH⁻SAS was confirmed by XRD, TGA and FTIR. LDH⁻SAS was well dispersed in the NBR matrix, owing to its strong interaction with the nitrile group of NBR. The obtained NBR/LDH⁻SAS composites exhibited excellent thermo-oxidative aging resistance as shown by TGA-DSC. Further investigation by ATR-FTIR indicated that SAS can capture the radical groups, even during the aging process, which largely accounts for the improved aging resistance.
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Affiliation(s)
- Tianxiang Li
- School of Materials Science and Engineering, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, Sichuan, China.
| | - Zhengren Shi
- School of Materials Science and Engineering, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, Sichuan, China.
| | - Xianru He
- School of Materials Science and Engineering, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, Sichuan, China.
| | - Ping Jiang
- School of Materials Science and Engineering, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, Sichuan, China.
| | - Xiaobin Lu
- School of Materials Science and Engineering, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, Sichuan, China.
| | - Rui Zhang
- Institut für Physik, Universität Rostock, Albert-Einstein-Str. 23-24, 18051 Rostock, Germany.
| | - Xin Wang
- School of Materials Science and Engineering, Southwest Petroleum University, 8 Xindu Avenue, Chengdu 610500, Sichuan, China.
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5
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Effect of chain length of polyisobutylene oligomers on the molecular motion modes of butyl rubber: Damping property. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.03.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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6
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Zhang Z, He X, Wang X, Rodrigues AM, Zhang R. Reinforcement of the mechanical properties in nitrile rubber by adding graphene oxide/silicon dioxide hybrid nanoparticles. J Appl Polym Sci 2017. [DOI: 10.1002/app.46091] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Zhao Zhang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & School of Materials Science and Engineering; Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Xianru He
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & School of Materials Science and Engineering; Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Xin Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & School of Materials Science and Engineering; Southwest Petroleum University; Chengdu 610500 People's Republic of China
| | - Alisson M. Rodrigues
- Department of Materials Engineering, CeRTEV-Center for Research, Technology and Education in Vitreous Materials; Federal University of São Carlos; São Carlos SP 13565-905 Brazil
| | - Rui Zhang
- Institut für Physik; Universität Rostock, Albert-Einstein-Str. 23-24; Rostock 18051 Deutschland
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7
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Zhang R, He X, Rodrigues AM, Guo Q. Softening dynamics of polymer blends and composites investigated by differentia spectra of dynamic mechanical analysis. ADVANCES IN POLYMER TECHNOLOGY 2017. [DOI: 10.1002/adv.21925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rui Zhang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & College of Materials Science and Engineering; Southwest Petroleum University; Chengdu Sichuan China
- Institut für Physik; Universität Rostock; Rostock Germany
| | - Xianru He
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & College of Materials Science and Engineering; Southwest Petroleum University; Chengdu Sichuan China
| | - Alisson M. Rodrigues
- Vitreous Materials Laboratory; Department of Materials Engineering; Federal University of São Carlos; São Carlos Brazil
| | - Qipeng Guo
- Polymers Research Group; Institute for Frontier Materials; Deakin University; Geelong Vic. Australia
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Jiang P, Yang C, He X, Rodrigues AM, Zhang R. Viscoelastic changes in chlorinated butyl rubber modified with graphene oxide. IRANIAN POLYMER JOURNAL 2017. [DOI: 10.1007/s13726-017-0570-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Zhang R, He X, Lai Z, Yang D. Effect of some inorganic particles on the softening dispersion of the dynamics of butyl rubber. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1761-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang D, Zhang H, Guo J, Cheng B, Cao Y, Lu S, Zhao N, Xu J. Biomimetic Gradient Polymers with Enhanced Damping Capacities. Macromol Rapid Commun 2016; 37:655-61. [DOI: 10.1002/marc.201500637] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 12/29/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Dong Wang
- Beijing National Laboratory for Molecular Sciences; Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; Chinese Academy of Sciences; Zhongguancun North First Street 2 Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Huan Zhang
- Beijing National Laboratory for Molecular Sciences; Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; Chinese Academy of Sciences; Zhongguancun North First Street 2 Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jing Guo
- Beijing National Laboratory for Molecular Sciences; Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; Chinese Academy of Sciences; Zhongguancun North First Street 2 Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Beichen Cheng
- Beijing National Laboratory for Molecular Sciences; Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; Chinese Academy of Sciences; Zhongguancun North First Street 2 Beijing 100190 China
| | - Yuan Cao
- Beijing National Laboratory for Molecular Sciences; Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; Chinese Academy of Sciences; Zhongguancun North First Street 2 Beijing 100190 China
| | - Shengjun Lu
- Beijing National Laboratory for Molecular Sciences; Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; Chinese Academy of Sciences; Zhongguancun North First Street 2 Beijing 100190 China
| | - Ning Zhao
- Beijing National Laboratory for Molecular Sciences; Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; Chinese Academy of Sciences; Zhongguancun North First Street 2 Beijing 100190 China
| | - Jian Xu
- Beijing National Laboratory for Molecular Sciences; Laboratory of Polymer Physics and Chemistry; Institute of Chemistry; Chinese Academy of Sciences; Zhongguancun North First Street 2 Beijing 100190 China
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11
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Zhang Z, He X, Zhang J, Lu X, Yang C, Liu T, Wang X, Zhang R. Influence of graphene/ferriferrous oxide hybrid particles on the properties of nitrile rubber. RSC Adv 2016. [DOI: 10.1039/c6ra16767e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Graphene/Fe3O4 hybrid particles synthesized by co-precipitation can be finely dispersed in NBR as fewer-layered sheets, resulting in great improvement on mechanical property of NBR composite even at very low filler content.
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Affiliation(s)
- Zhao Zhang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- School of Materials Science and Engineering
- Southwest Petroleum University
- Chengdu
- PR China 610500
| | - Xianru He
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- School of Materials Science and Engineering
- Southwest Petroleum University
- Chengdu
- PR China 610500
| | - Jiajie Zhang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- School of Materials Science and Engineering
- Southwest Petroleum University
- Chengdu
- PR China 610500
| | - Xiaobin Lu
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- School of Materials Science and Engineering
- Southwest Petroleum University
- Chengdu
- PR China 610500
| | - Chunhua Yang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- School of Materials Science and Engineering
- Southwest Petroleum University
- Chengdu
- PR China 610500
| | - Tao Liu
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- School of Materials Science and Engineering
- Southwest Petroleum University
- Chengdu
- PR China 610500
| | - Xin Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
- School of Materials Science and Engineering
- Southwest Petroleum University
- Chengdu
- PR China 610500
| | - Rui Zhang
- Institut für Physik
- Universität Rostock
- Rostock
- Germany 18051
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