- 必威体育下载

姓名
邮箱
手机号码
标题
留言内容
验证码

Abstract

The relationship between stress relaxation behavior and inherent microstructural heterogeneity in amorphous polystyrene materials is studied in this work. Starting from the basic Maxwell viscoelastic model and extending to the three-parameter stretched exponential equation, the nature of the distribution of characteristic timescales and the segmental effects during polymer stress relaxation are discussed. The results indicate that the stress relaxation behavior of amorphous polymers exhibits non-exponential characteristics. Neither a single characteristic time with exponential decay nor a finite spectrum method with finite characteristic time can adequately describe the stress relaxation behavior of polystyrene due to the continuous distribution of characteristic timescales resulting from microstructural heterogeneity in amorphous polymers. In addition, the changes in stress relaxation behavior caused by physical aging are explored. Aging leads to a transition of the system towards a more stable energy state, making it difficult to activate the relaxation of the individual units, thus slowing down the stress relaxation process and increasing the characteristic time.

Keywords:

Authors and contacts

Corresponding author:Qiao Ji-Chao,qjczy@nwpu.edu.cn

Funds:Project supported by the National Natural Science Foundation of China (Grant Nos. 51971178, 52271153), the Outstanding Youth Found of Shaanxi Province, China (Grant No. 2021JC-12), and National College Student Innovation and Entrepreneurship Training Program, China (Grant No. 202310699002).

FullText HTML: translate this paragraph

References

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
[40]
[41]
[42]
[43]
[44]

Cited By

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

DownLoad: Full-Size Img PowerPoint

[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
[19]
[20]
[21]
[22]
[23]
[24]
[25]
[26]
[27]
[28]
[29]
[30]
[31]
[32]
[33]
[34]
[35]
[36]
[37]
[38]
[39]
[40]
[41]
[42]
[43]
[44]

[1]	Zhang Jian, Hao Qi, Zhang Lang-Ting, Qiao Ji-Chao.Probing microstructural heterogeneity of La-based amorphous alloy under versatile mechanical stimuli. Acta Physica Sinica, 2024, 73(4): 046101.doi:10.7498/aps.73.20231421
[2]	Li Jia-Rui, Le Tao-Ran, Wei Hao-Yun, Li Yan.Non-contact viscoelasticity measurements based on impulsive stimulated Brillouin spectroscopy. Acta Physica Sinica, 2024, 73(12): 127801.doi:10.7498/aps.73.20231974
[3]	Meng Shao-Yi, Hao Qi, Wang Bing, Duan Ya-Juan, Qiao Ji-Chao.Effects of cooling rate onβrelaxation process and stress relaxation of La-based amorphous alloys. Acta Physica Sinica, 2024, 73(3): 036101.doi:10.7498/aps.73.20231417
[4]	Meng Shao-Yi, Hao Qi, Lyu Guo-Jian, Qiao Ji-Chao.The β relaxation process of La-based amorphous alloy: Effect of annealing and strain amplitude. Acta Physica Sinica, 2023, 72(7): 076101.doi:10.7498/aps.72.20222389
[5]	Huang Bei-Bei, Hao Qi, Lyu Guo-Jian, Qiao Ji-Chao.Dynamical relaxation and stress relaxation of Zr-based metallic glass. Acta Physica Sinica, 2023, 72(13): 136101.doi:10.7498/aps.72.20230181
[6]	Duan Ya-Juan, Qiao Ji-Chao.Dynamic relaxation characteristics and stress relaxation behavior of Pd-basedmetallic glass. Acta Physica Sinica, 2022, 71(8): 086101.doi:10.7498/aps.71.20212025
[7]	Wang Yang, Zhao Ling-Ling.Viscoelastic relaxation time of the monoatomic Lennard-Jones system. Acta Physica Sinica, 2020, 69(12): 123101.doi:10.7498/aps.69.20200138
[8]	Jiang Wen-Long.Mechanism and quantitative study of specific heat change during glass transition of amorphous polystyrene and Pd₄₀Ni₁₀Cu₃₀P₂₀. Acta Physica Sinica, 2020, 69(12): 126401.doi:10.7498/aps.69.20200331
[9]	Xu Fu, Li Ke-Feng, Deng Xu-Hui, Zhang Ping, Long Zhi-Lin.Research on viscoelastic behavior and rheological constitutive parameters of metallic glasses based on fractional-differential rheological model. Acta Physica Sinica, 2016, 65(4): 046101.doi:10.7498/aps.65.046101
[10]	Dai Qing, Xiang Nan, Cheng Jie, Ni Zhong-Hua.Viscoelastic focusing of microparticles in circular cross-sectional microchannels. Acta Physica Sinica, 2015, 64(15): 154703.doi:10.7498/aps.64.154703
[11]	Liao Guang-Kai, Long Zhi-Lin, Xu Fu, Liu Wei, Zhang Zhi-Yang, Yang Miao.Investigation on the viscoelastic behavior of an Fe-base bulk amorphous alloys based on the fractional order rheological model. Acta Physica Sinica, 2015, 64(13): 136101.doi:10.7498/aps.64.136101
[12]	Yang Bin-Xin, Ouyang Jie.Simulation of residual stress in viscoelastic mold filling process. Acta Physica Sinica, 2012, 61(23): 234602.doi:10.7498/aps.61.234602
[13]	Wang Yu, Ouyang Jie, Yang Bin-Xin.Analysis on fractional Oldroyd-B viscoelastic Poiseuille flow by numerical inversion of Laplace transforms. Acta Physica Sinica, 2010, 59(10): 6757-6763.doi:10.7498/aps.59.6757
[14]	Xiong Yi, Zhang Xiang-Jun, Zhang Xiao-Hao, Wen Shi-Zhu.Investigation on viscoelastic behaviors of near-interface 5CB liquid crystal under electric field with quartz crystal microbalance. Acta Physica Sinica, 2010, 59(11): 7998-8004.doi:10.7498/aps.59.7998
[15]	Zhang Hong-Ping, Ouyang Jie, Ruan Chun-Lei.A multi-scale model with GENERIC structure of polymeric melt with fiber suspensions. Acta Physica Sinica, 2009, 58(1): 619-630.doi:10.7498/aps.58.619
[16]	Du Qi-Zhen, Yang Hui-Zhu.Viscoelastic wave equations of seismic multi-wave in fractured media. Acta Physica Sinica, 2004, 53(8): 2801-2806.doi:10.7498/aps.53.2801
[17]	Yi Gui-Yun, Dong Peng, Wang Xiao-Dong, Liu Li-Xia, Chen Sheng-Li.Synthesis and characterization of three-dimensionally ordered macroporous polystyrene. Acta Physica Sinica, 2004, 53(10): 3311-3315.doi:10.7498/aps.53.3311
[18]	Du Qi-Zhen, Yang Hui-Zhu.Finite-element methods for viscoelastic and azimuthally anisotropic media. Acta Physica Sinica, 2003, 52(8): 2010-2014.doi:10.7498/aps.52.2010
[19]	Du Qi-Zhen, Yang Hui-Zhu.. Acta Physica Sinica, 2002, 51(9): 2101-2108.doi:10.7498/aps.51.2101
[20]	Wang Xiao-Qiang, Xie Er-Qing, Qian Bing-Zhong, He De-Yan, Zhu Zhi-Yong, Jin Yun-Fan.. Acta Physica Sinica, 2002, 51(5): 1094-1097.doi:10.7498/aps.51.1094

Catalog

Vol. 73, Issue 3 - 2024-02-05

Metrics

Abstract views:1717
PDF Downloads:51
Cited By:0

Search

Article