期刊文献+

DAMAGE OF SILICONE RUBBER INDUCED BY PROTON IRRADIATION 被引量:2

DAMAGE OF SILICONE RUBBER INDUCED BY PROTON IRRADIATION
下载PDF
导出
摘要 In this paper, the damage to methyl silicone rubber induced by irradiation with protons of 150 keV energy wasstudied. The surface morphology, tensile strength, Shore hardness, cross-linking density and glass transition temperaturewere examined. Positron annihilation lifetime spectrum analysis (PALS) was perfomed to reveal the damage mechanisms ofthe rubber. The results showed that tensile strength and Shore hardness of the rubber increased first and then decreased withincreasing irradiation fluence. The PALS characteristics τ_3 and I_3, as well as the free volume V_f, decreased with increasingirradiation fluence up to 10^(15) cm^(-2), and then increased slowly. It indicates that proton irradiation causes a decrease of freevolume in the methyl silicone rubber when the fluence is less than 10^(15)cm^(-2), while the free volume increases when thefluence is greater than 10^(15)cm^(-2). The results on cross-linking density indicate that the cross-linking induced by protonirradiation is dominant at smaller proton fluences, increasing the tensile strength and Shore hardness of the rubber, while thedegradation of rubber dominates at greater fluence, leading to a decrease of tensile strength and Shore hardness. In this paper, the damage to methyl silicone rubber induced by irradiation with protons of 150 keV energy wasstudied. The surface morphology, tensile strength, Shore hardness, cross-linking density and glass transition temperaturewere examined. Positron annihilation lifetime spectrum analysis (PALS) was perfomed to reveal the damage mechanisms ofthe rubber. The results showed that tensile strength and Shore hardness of the rubber increased first and then decreased withincreasing irradiation fluence. The PALS characteristics τ_3 and I_3, as well as the free volume V_f, decreased with increasingirradiation fluence up to 10^(15) cm^(-2), and then increased slowly. It indicates that proton irradiation causes a decrease of freevolume in the methyl silicone rubber when the fluence is less than 10^(15)cm^(-2), while the free volume increases when thefluence is greater than 10^(15)cm^(-2). The results on cross-linking density indicate that the cross-linking induced by protonirradiation is dominant at smaller proton fluences, increasing the tensile strength and Shore hardness of the rubber, while thedegradation of rubber dominates at greater fluence, leading to a decrease of tensile strength and Shore hardness.
作者 张丽新
出处 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2003年第5期563-567,共5页 高分子科学(英文版)
关键词 Silicone rubber Proton irradiation Tensile strength Positron annihilation lifetime spectrum Free volume Silicone rubber Proton irradiation Tensile strength Positron annihilation lifetime spectrum Free volume
  • 相关文献

参考文献6

  • 1Stevenson, L, David, C and Gauthier, L, Polymer, 2001, (42): 9287.
  • 2Gierow, P A, Paxton, J P and Cost, T L, Journal of Spacecraft and Rockets, 1995, 32 (2): 317.
  • 3Jean, Y C, Microchemical Journal, 1990, 42:72.
  • 4Eldrup, M, Lightbody, D and Sherwood, J N, Chem, Phys, 1981, 63:51.
  • 5Jean, Y C, Sanderczki, T C and Ames, D P, J Polym Sci, 1986, B24:1247.
  • 6"Chinese National Standard Collection (in Chinese)", Chinese Standard Press, Beijing, 1986, Vol 14, p967.

同被引文献12

  • 1Stevenson L, David C, Gauthier L et al. Influence of SiO2 fillers on the irradiation ageing of silicone rubbers[J]. Polymer, 2001, (42): 9287-9292.
  • 2Gierow P A, Paxton J P, Cost T L. Materials property effects on a thin-film solar concentrator[J]. Journal of Spacecraft and Rockets,1995, 32 (2): 317-322.
  • 3Jong Yeol Jeon, Hee Young Kim. Microwave irradiation effect on diffusion of organic molecules in polymer[J]. European Polymer Journal, 2000, (36): 895-899.
  • 4Zhang L X, Yang S Q, He S Y, et al. A study on damage of methyl silicone rubber induced by proton radiation[A]. Sixth International Space Conference[C]. Toroto-Canada, 2002.
  • 5Zhang L X, Yang S Q, He S Y. A study on damage effects of methyl silicone rubber induced by proton radiation[J]. Journal of Spacecraft and Rockets, 2004,41 (2), 231-237.
  • 6GierowPA, PaxtonJP, CostTL. Materials property effects on a thin-film solar concentrator [ J ]. Journal of Spacecraft and Rockets,1995, 32(2): 317 ~322.
  • 7Stein B A. LDEF materials review and LDEF-69 months in space [J]. NASA CP,1995(3194) :741 ~789.
  • 8Zhang Lixin, Yang Shiqin, He Shiyu. A study on damage effects of methyl silicone rubber induced by proton radiation [ J ]. Journal of Spacecraft and Rockets, 2004, 41 ( 2 ) :231 ~ 237.
  • 9Zhang Lixin, Yang Shiqin, He Shiyu. Damage effects and mechanisms of proton irradiation on methyl silicone rubber[J]. Materials Chemistry and Physics,2004,83 (3): 255 ~ 259.
  • 10Denkins P, Badhwar G, Obot V. Radiation transport and assessment to better predict radiation exposure, dose, and toxicological effects to human organs on long duration space flights [ J ]. Acta Astronautics,2001,49(3) :313 ~319.

引证文献2

二级引证文献3

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部