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Journal Articles

Observation of oxidized region in $$gamma$$-ray irradiated polyethylene with KOH treatment and SEM-EDS

Shimada, Akihiko; Sugimoto, Masaki; Yoshikawa, Masahito

JAEA-Review 2014-050, JAEA Takasaki Annual Report 2013, P. 30, 2015/03

In case of the accelerated ageing test on polymer cable insulation used for the nuclear power facility, it is very important to recognize whether oxygen penetrates in the polymer wholly or not. To confirm this, there are the method by which polymer is soaked in the KOH solution at 70$$^{circ}$$C for 5 minutes, dried and observed by a SEM-EDS, only for ethylene propylene rubber, one of the polymers. This study is to apply that method for polyethylene. Polyethylene sheet of 2 mm thickness was irradiated by $$gamma$$ ray at a dose rate of 2 kGy/h for 400 h. A piece of irradiated polyethylene was picked up and the piece was soaked in the KOH solution for 24 h. After that, the piece was observed by a SEM-EDS. At the region within 70 micro meters from the surface, potassium is observed. It means that oxidation is occurred in this region. From now on, optimum soaking time will be examined.

JAEA Reports

Gas evolution of polyethylene by radiolysis and the application to dosimeter

Haruyama, Yasuyuki; Sunaga, Hiromi; Arakawa, Kazuo; Seguchi, Tadao

JAERI-Tech 2002-084, 105 Pages, 2002/11

JAERI-Tech-2002-084.pdf:2.01MB

no abstracts in English

Journal Articles

ESR study on chemical crosslinking reaction mechanisms of polyethylene using a chemical agent, 4; Effect of sulfur- and phosphorous-type antioxidants

Yamazaki, Takanori*; Seguchi, Tadao

Journal of Polymer Science, Part A; Polymer Chemistry, 38(17), p.3092 - 3099, 2000/09

no abstracts in English

JAEA Reports

Experimental data on polyethylene shield transmission of quasi-monoenergetic neutrons generated by 43- and 68-MeV protons via $$^{7}$$Li(p,n) reaction

Nakao, Noriaki*; Nakashima, Hiroshi; Nakao, Makoto*; Sakamoto, Yukio; Nakane, Yoshihiro; ; Tanaka, Shunichi; Nakamura, Takashi*

JAERI-Data/Code 98-013, 46 Pages, 1998/03

JAERI-Data-Code-98-013.pdf:2.14MB

no abstracts in English

Journal Articles

Polymerization of phosphor-containing oligomer induced by electron-beam irradiation

*; *; ; Hatada, Motoyoshi

Journal of Applied Polymer Science, 55, p.1643 - 1649, 1995/00

 Times Cited Count:0 Percentile:0.01(Polymer Science)

no abstracts in English

JAEA Reports

Characteristics of polyethylene and zirconium-hydride moderator for the NSRR tests

Nakamura, Takehiko; ; Sobajima, Makoto

JAERI-M 94-029, 99 Pages, 1994/03

JAERI-M-94-029.pdf:3.49MB

no abstracts in English

Journal Articles

Preparation of flame-retardant polyethylene foam of open-cell type by radiation grafting of vinyl phosphonate oligomer

; *; *; *; Hatada, Motoyoshi

Journal of Applied Polymer Science, 51, p.841 - 853, 1994/00

 Times Cited Count:10 Percentile:46.49(Polymer Science)

no abstracts in English

Journal Articles

Study of polyethylene crosslinking by ESR

Yamazaki, T.*; Seguchi, Tadao

DEI-93-157, 0, p.35 - 44, 1993/12

no abstracts in English

Journal Articles

Thin film alanine-polyethylene dosimeter

Kojima, Takuji; H.L.A.Ranjith*; Haruyama, Yasuyuki; Kashiwazaki, Shigeru*; Tanaka, Ryuichi

Applied Radiation and Isotopes, 44(1-2), p.41 - 45, 1993/00

 Times Cited Count:12 Percentile:75.41(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

Irradiation effect of polymers-approach with model compound

Seguchi, Tadao

Hoshasen To Sangyo, 0(58), p.31 - 35, 1993/00

no abstracts in English

Journal Articles

ESR study on crosslinking reaction of PE induced by dicumyl-per-oxide

Yamazaki, T.*; Seguchi, Tadao

DEI-92-118, p.103 - 110, 1992/00

no abstracts in English

JAEA Reports

Radiation effects on polyethylene foam

B.Tang*; ; *; *; Hatada, Motoyoshi

JAERI-M 91-134, 47 Pages, 1991/09

JAERI-M-91-134.pdf:1.16MB

no abstracts in English

Journal Articles

Effect of molecular orientation on the radiolysis of polyethylene in the presence of oxygen

*; Nishii, Masanobu; Seguchi, Tadao; *; *

Radiation Physics and Chemistry, 37(2), p.213 - 216, 1991/00

no abstracts in English

Journal Articles

Irradiation effects of polymer-model compounds

Seguchi, Tadao; Katsumura, Yosuke*; *; Hayakawa, Naohiro; Tamura, Naoyuki; Tabata, Yoneho*

Radiation Physics and Chemistry, 37(1), p.29 - 35, 1991/00

no abstracts in English

Journal Articles

Preparation of hydrophilic polyethylenefoam of open cell type by radiation grafting of acrylic acid

; Hatada, Motoyoshi; *; *; *

Journal of Applied Polymer Science, 37, p.2153 - 2164, 1989/00

 Times Cited Count:17 Percentile:66.45(Polymer Science)

no abstracts in English

Journal Articles

Preparation of flame-retardant polyethylene foam

; *

Porifairu, 26(9), p.25 - 27, 1989/00

no abstracts in English

Journal Articles

Proton irradiation effects on organic polymers

Seguchi, Tadao; Sasuga, Tsuneo; Kawakami, Waichiro; Hagiwara, Miyuki; Kono, Isamu*; Kamitsubo, Hromichi*

Proceedings of 11th International Conference on Cyclotrons and Their Applications, p.669 - 672, 1987/00

Organic polymer films(100 m thickness) of polyethylene, polypropylene, polyethyleneterephtalate, and polyethersulfone were irradiated by protons of 8MeV using a cyclotorn, and their radiation effects were investigated by the changes of mechanical properties.

Journal Articles

Radiation effects of proton beam on polymer films

Kawanishi, Shuichi; Sasuga, Tsuneo; ; ; Seguchi, Tadao; Kono, Isamu*

EIM-86-125, p.49 - 54, 1986/00

no abstracts in English

Journal Articles

Distribution of grafted poly(acrylic acid)in polyethylene film

J.Appl.Polym.Sci., 32, p.4405 - 4422, 1986/00

 Times Cited Count:28 Percentile:80.3(Polymer Science)

no abstracts in English

Journal Articles

A Compact high voltage isolation transformer for the 350kV injector of the JAERI tandem accelerator

Nuclear Instruments and Methods in Physics Research A, 249, p.137 - 140, 1986/00

 Times Cited Count:1 Percentile:41.48(Instruments & Instrumentation)

no abstracts in English

89 (Records 1-20 displayed on this page)