著者
Yoshiaki NAKAMURA Kiyoshi WATANABE
出版者
THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN
雑誌
NIPPON GOMU KYOKAISHI (ISSN:0029022X)
巻号頁・発行日
vol.84, no.5, pp.165-170, 2011 (Released:2011-12-29)
参考文献数
8

This report introduces the feature and the technology trends of rubber cables for power generation plants and the transmission and distribution of electricity. In nuclear power plants, the radiation resistant ethylene-propylene rubber cable is used and requested longer service life, 60-80 years, for the purpose of plant life extension. In wind power plants, high voltage cable is used and required superior low temperature distortion resistance.The cables in photovoltaic power module demand the weather resistance, especially ultra-violet resistance. Halogen-free polyolefin and ethylene-propylene rubber are used. In the field of the transmission and distribution of electricity, rubber block joint is used to connect power cables, which utilizes the rubber elasticity. Ethylene-propylene rubber and silicone rubber are used in this application and it is requested to achieve both high dielectric breakdown strength, good workability which means cold shrinkable property around –40 °C, and relatively low cost.
著者
町 末男
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.52, no.2, pp.115-121, 1979-02-15 (Released:2013-03-05)
参考文献数
13
被引用文献数
3
著者
編集委員会
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.84, no.12, pp.374-375, 2011 (Released:2012-03-27)
参考文献数
2
著者
占部 誠亮
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.26, no.8, pp.495-497, 1953 (Released:2008-04-16)
参考文献数
19
被引用文献数
1
著者
対馬 恭吾
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.88, no.9, pp.358-362, 2015 (Released:2015-11-25)
参考文献数
7

Condoms, which are controlled medical devices, are easily utilized as they are low cost and cause no side effects. Condoms are increasingly used as one of the most effective means of birth control and prevention of sexually trans-mitted diseases. When producing condoms, the dipping/drying processes are repeated twice during the molding. After being released from the mold, post-vulcanization is applied. The quality inspection of the finished products includes a bursting test which is used as a substitute for the “no tearing during use” test. Japanese condoms of a thickness of 0.03mm had been used successfully in the past. After introducing the bursting test into ISO 4074, the condoms being 0.03mm in thickness became problematic to produce. However, the subsequent development of new technologies again enabled the production of the condoms with a thickness of 0.03mm. These are more suitable to new competitive rules, and the production of the condoms continues to this day.
著者
編集委員会
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.82, no.8, pp.370-374, 2009 (Released:2010-06-01)
参考文献数
3

4 0 0 0 OA 補講(4)

著者
編集委員会
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.83, no.4, pp.109-116, 2010 (Released:2010-08-25)
参考文献数
9

3 0 0 0 OA 防舷材

著者
末富 栄樹
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.55, no.9, pp.537-556, 1982 (Released:2007-07-09)
参考文献数
8
被引用文献数
2 1
著者
網野 直也
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.88, no.2, pp.37-42, 2015 (Released:2015-05-22)
参考文献数
22

Rolling resistance of tires is a highly important property for tire development as well as tire traction. The rolling resistance is mainly generated by energy loss of tire components during tire deformation, because tires transform their shape from round to flat at their contact patch. It is known that to reduce the rolling resistance, tanδ of rubber around 10 Hz should be decreased. In general, silica filled rubber shows lower tanδ around 10 Hz compared to carbon black filled rubber. On the other hand, frictional force of rubber consists of two main terms. One is hysteresis term and the other is adhesion term. It is reported that silica filled rubber shows higher frictional force in comparison with carbon black filled rubber, because of higher adhesion component of friction. Therefore, silica filled rubber can improve not only rolling resistance but also traction of tires. X-ray and Neutron scattering results show that dispersed structure of silica agglomerates in rubber is different from that of carbon black agglomerates. It is considered that the good performance of silica filled rubber in rolling resistance and traction correlates to the silica dispersed structure in rubber.
著者
五十野 善信
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.74, no.6, pp.212-217, 2001 (Released:2007-05-28)
参考文献数
12
被引用文献数
1
著者
村上 謙吉
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.81, no.2, pp.65-69, 2008-02-15 (Released:2010-03-25)
参考文献数
3
著者
中野 健 田所 千治 前川 覚
出版者
(一社)日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.85, no.10, pp.313-318, 2012 (Released:2013-08-02)
参考文献数
27
被引用文献数
1 3

The deformation of sliding objects plays an important role for determining the characteristics of frictional vibration. Therefore, to understand the frictional vibration of elastomers comprehensively, in-situ observations of contact area are necessary along with force measurements. In this article, after explaining the basics of frictional vibration using a single-degree-of-freedom model, some optical methods of visualizing the contact area (i.e., methods using transmission or reflection of visible light) are introduced. In particular, methods using the total reflection are hopeful to realize sensitive observations of contact area under dry or wet conditions.
著者
〓谷 信三 松村 泰成 山下 晋三 松山 奉史 山岡 仁史
出版者
THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.57, no.1, pp.39-44, 1984

天然ゴム (NR) 及びイソプレンゴム (IR) の純ゴム硫黄架橋体を作製し, 溶剤抽出により精製を行った. この架橋体に空気中, 室温でγ線を照射 (0-20Mrad) して劣化した試料を引張試験, 膨潤試験, 全反射赤外吸収スペクトルなどにより検討した. その結果, (1) NR架橋体, IR架橋体ともに, 数 Mrad のγ線照射により引張強さ (<i>T<sub>B</sub></i>) は著しく低下した. (2) <i>T<sub>B</sub></i>の低下は, 応力-ひずみ曲線の変化から, 照射によって伸長結晶化が起こりにくくなったためである. (3) 20Mrad までの照射量では, 中変形領域における応力, 例えば50%伸長時の応力 (<i>M</i><sub>50</sub>) の変化は顕著ではなく, 硬さと網目鎖濃度の変化も小さかった. (4)モノスルフィドとポリスルフィドの架橋構造の違いは, <i>M</i><sub>50</sub>の照射による変化挙動に認められたが, その差は大きいとはいえない. (5)以上の結果から, シス-1, 4-ポリイソプレンは照射により, 分解と架橋反応がほぼ同程度に起こるものと考えられる, などが明らかとなった. 伸長結晶化阻害は, 照射により構造の乱れが起こったためと考えられるが, その詳細についてはいまだ結論できなかった.
著者
本間 宏也
出版者
THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.86, no.12, pp.373-377, 2013 (Released:2014-02-06)
参考文献数
15

Polymeric materials have the advantage of light weight, ease of manufacturing and feasibility for various shapes, compared with porcelain one. Application of the polymeric materials to outdoor electrical insulating apparatuses has achieved to reduce the size, weight of the equipments, and maintenance cost of the electrical power lines. Especially, silicone rubber can show good weatherability and hydrophobicity, so that it has been widely applied to polymeric insulators for outdoor use. Polymeric insulators are gaining market share as a result of improved tolerance to pollution, ease of handling and installation. In this article, the state of research and development of the polymeric insulators and their application for the electrical power lines are provided.
著者
山下 晋三
出版者
一般社団法人 日本ゴム協会
雑誌
日本ゴム協会誌 (ISSN:0029022X)
巻号頁・発行日
vol.42, no.9, pp.661-690, 1969-09-15 (Released:2010-02-19)
参考文献数
158
被引用文献数
9 7