| POLYMERS AND POLYMER MATRIX COMPOSITES |
|
|
|
|
|
| Influence of 60Co Gamma Irradiation on Compression Properties of the Silicone Rubber Foams |
| SHI Ping'an1,2, QIU Yong1,2, WAN Qiang1,2, HU Wenjun1,2, YAN Shunping1,2
|
1 Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621999, China;
2 Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Mianyang 621999, China |
|
|
|
|
Abstract In order to prove theoretical basis and selecting optimizing design of silicone foamcushion under 60Co γ-irradiation conditions, the influence of radiation on the compression properties of silicone rubber foams was studied by several methods, such as the mechanics experiment, irradiation experiment, and scanning electron microscopy (SEM) analysis, and the damage mechanism were inferred through analysis the irreversible transformation of the indented materials before and after γ-irradiation. Furthermore, a model for the compressive strength prediction of silicone foam cushion was proposed in accordance with irradiation effects, and the variation of compressive modulus and fracture strain with irradiation doses were obtained. The results showed that irradiation dose and pre-strain had significant effects on the properties of silicone rubber foam, and the mechanics property of irradiated silicone rubber foams increased at beginning and then decreased with enhanced γ-radiation dose under low pre-strain condition. But the pre-strain exceeded 50%, the mechanics property of irradiated silicone rubber foams firstly decreased rapidly and then slowly with enhanced γ-radiation dose. Tensile strength and shear strength of irradiated silicone rubber foams were enhanced by 69% and 84%, respectively, at a pre-strain of 30% and a radiation dose of 300 kGy. When the radiation dose increased to 1 000 kGy, the value dropped to 47% and 50% of the initial value. Those significant changes provided information for inferring the mechanism of radiation induced cross-linking and degradation reactions of mechanics property of silicone rubber foams. The analysis result of macroscopic properties and microstructure could prove it.
|
|
Published: 28 January 2021
|
|
|
| Fund:The Natural Science Foundation of China (U153029,11972219). |
About author:: Ping’an Shiis currently an associate professor in Institute of Systems Engineering of CAEP. His research directions are numerical simulation of particular materials processing and structural performance evaluation. He has presided over or participated in many major projects at various levels, and published more than 40 articles in domestic and foreign journals, and applied for more than 6 invention patents.
Qiang Wanreceived his Ph.D. degree in mechanics from Xi’an Jiaotong University in 2006. He is currently a researcher in Institute of Systems Engineering, China Academy of Engineering Physics (CAEP) and works on research involving weapon type, high-tech equipment and multi-physics field multi-scale mecha-nics. He is in charge of or participates in more than 30 types of task and fundamental research projects. He has more than 50 journal published papers (SCI 20, EI 25, cited more than 200 times), 1 book chaper (cited more than 1 000 times) and 5 patents. He is awarded the first prize of Science and Technology of Shaanxi Province, the second prize of Science and Technology Innovation of CAEP. |
|
|
1 Wang Y F. Effects of radiation on organic polymer. Ph.D. Thesis, Xi'an Jiaotong University, China, 1993(in Chinese).
王玉芬. 有机高聚物辐射效应的研究.博士学位论文,西安交通大学,1993.
2 Huang W, Fu Y B, Xing P F, et al. Atomic Energy Science and Techno-logy, 2002, 36(6), 503(in Chinese).
黄玮,傅依备,邢丕峰,等. 原子能科学技术, 2002, 36(6), 503.
3 Huang W, Li L, Wu X L, et al. Atomic Energy Science and Technology, 2003, 47(9), 1496(in Chinese).
黄玮,李磊,伍晓利等.原子能科学技术, 2003, 47(9),1496.
4 Huang W, Fu Y B, Wang C Y, et al. Journal of Applied Polymer Science, 2003,89(13), 3437.
5 Maxwell R S, Balazs B. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2003, 208, 199.
6 Andrady A L, Torikai A, Redhwi H H, et al. Macromolecules, 2015, 14 (1), 170.
7 Hu W J, Zhang K, Chen X L, et al. China Rubber Industry,1996, 46(5), 266(in Chinese).
胡文军,张凯,陈晓丽,等,橡胶工业, 1996, 46(5), 266.
8 Guo R,Li D T, Yang S S, et al. Vacuum and Cryogenics, 2015, 21(4), 221(in Chinese).
郭睿,李得天,杨生胜,等. 真空与低温, 2015, 21(4), 221.
9 Sha Y S,Zhang C S,Li J L,et al. Materials for Mechanical Engineering,2013, 37(2), 25(in Chinese).
沙艳松,张长生,李静莉,等. 机械工程材料, 2013, 37(2), 25.
10 Zheng L F,Zou J, Qiao Z M,et al. Acta Materiae Compositae Sinica, 2015, 32(5), 1316(in Chinese).
郑莉芳,邹江,乔志明,等.复合材料学报, 2015, 32(5), 1316. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2021, Vol. 35 
