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31 results on '"Polyimide"'

1. Development of epoxy resin polishing pads with the addition of polymer particles

Author

Yu ZHANG, Yasuhiro TANI, and Nobuyuki NOMURA

Subjects
polishing pad, abrasive, polymer particle, epoxy resin, polyurethane, polyimide, material removal rate, suface roughness, zeta potential, Mechanical engineering and machinery, TJ1-1570, Engineering machinery, tools, and implements, TA213-215
Abstract

Polishing processes are critical to high material removal rate and excellent surface roughness. To realize the highly-efficient polishing of glassware, which are used as materials for flat-panel displays, glass lens, substrates of magnetic disks, a new-type polishing pad composited with an epoxy resin and polymer particles was developed, in this study. Authors focused on a surface asperity of the polishing pad for improving the abrasive retention capability of polishing pads and the slurry invasive activity to the polishing area. For changing the hydrophilic property of polishing pads, various type polymer particles were added to the epoxy resin. The hydrophilic polymer particles can improve the polishing characteristics of a normal epoxy resin pad. Because wear rates of the polymer particles and the epoxy resin, a rough surface of the polishing pad generals in polishing process. The rough surface advances the slurry invasive activity. The polymer particles assist the epoxy resin to grip the abrasives on the polishing pad. The material removal rate increases with increasing in the grain size and the hardness of the polymer particles added in the polishing pad. The addition amount of the particles and the hardness of epoxy resin affect the polishing characteristics of the polishing pads. The perfect addition amount and the hardness of epoxy resin were discussed.

Published
2018
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3. 紫外線照射表面濡れ性制御ポリイミド.

Author

津田祐輔

Abstract

Copyright of Kobunshi Ronbunshu is the property of Society of Polymer Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2017
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4. 不均一な形状を有するリンクル上における摩擦.

Author

鈴木 航祐 and 大園 拓哉

Abstract

Copyright of Kobunshi Ronbunshu is the property of Society of Polymer Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2016
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5. ホスホリルコリン基を有するポリイミドの合成と生体適合性ナノシ&#19968...

Author

浅尾幸平, 荻野真里, 岩野篤, 岡村陽介, 武岡真司, and 長瀬裕

Abstract

Copyright of Kobunshi Ronbunshu is the property of Society of Polymer Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2016
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6. ホスト官能基含有桂皮酸光二量体を用いた側鎖化学修飾型バイオベースポリイミドの合成

Subjects
bio-based polymers, ポリイミド, カチオン包接, ComputingMilieux_THECOMPUTINGPROFESSION, ComputerApplications_COMPUTERSINOTHERSYSTEMS, polyimide, 光反応, cation inclusion, crown ether, photoreaction, 桂皮酸, バイオベースポリマー, クラウンエーテル, cinnamic acid
Abstract

Supervisor:金子 達雄, 先端科学技術研究科, 修士 (マテリアルサイエンス)

Published
2021

7. Synthesis of Siloxane-Containing Alicyclic Tetracarboxylic Dianhydrides and Characterization of Their Polyimides.

Author

KIKUCHI, Tohru

Subjects
SILOXANES, ALICYCLIC compounds, SILICON, MOLECULAR weights, POLYIMIDES
Abstract

Siloxane-containing alicyclic tetracarboxylic dianhydrides were synthesized with a 5-norbornene-endo and/or exo-2,3-dicarboxylic anhydride and α,ω-hydrosilyl-origodimethylsiloxane which contain between two to five silicon atoms. The obtained endotetracarboxylic dianhydrides formed crystals, while the exo-tetracarboxylic dianhydrides were viscous liquids. The melting point of endo-tetracarboxylic dianhydrides and the viscosity of exo-tetracarboxylic dianhydrides decreased with the increasing number of silicons. The polyimides derived from these tetracarboxylic dianhydrides and 4,4'-oxydianiline were organosoluble. The glass transition temperature decreased with the number of silicons but the 5% weight loss temperature did not changed. The elongation of the exo-polyimide films increased with the weight-average molecular weight and the number of silicons, whereas the modulus and the strength decreased. To sum up, these thermal and mechanical properties are explained by the flexibility of the siloxane chains. [ABSTRACT FROM AUTHOR]

Published
2013
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8. Development of Novel Asymmetric and Addition-type Imide Resin with High Solubility and Excellent Processability.

Author

Miyauchi, Masahiko

Subjects
OLIGOMERS, POLYMERIZATION, COMPOSITE materials, PHENYL compounds, AMIDES
Abstract

Novel phenylethynyl-terminated addition-type imide oligomers (degree of polymerization: n = 4) derived from 1,2,4,5-benzenetetracarboxylic dianhydride, 2-phenyl-(4,4'-diaminodiphenyl ether) and 9,9-bis(4-aminophenoxy)fluorene were synthesized for the matrix resin of fiber reinforced composites with a high heat resistance. The uncured imide oligomers showed a good solubility (>30wt%) in aprotic solvents and very low minimum melt viscosity. These excellent properties were achieved by preventing the intra/intermolecular interactions of imide oligomer chains due to steric hindrance of the pendant phenyl group of P-ODA in a solution or a melting state. The imide oligomers were successfully converted to cross-linked structures after curing at 370°C for one hour. The glass transition temperature and elongation at break of the cured imide resin were found to be 350°C and > 15%. Furthermore, imide solution prepregs were prepared from the imide oligomer solution and carbon fibers. A void-less polyimide/ carbon fiber composite with high Tg could be also achieved to mold via imide solution prepregs. [ABSTRACT FROM AUTHOR]

Published
2012
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9. Surface Wettability Controllable Polyimides Bearing Long-Chain Alkyl Groups Studied by UV Light Irradiation.

Author

TSUDA, Yusuke, HASHIMOTO, Yuki, and MATSUDA, Takaaki

Subjects
POLYMERS, POLYIMIDES, FLUID mechanics, SURFACE chemistry, HYDROXYL group
Abstract

Some soluble polyimides were synthesized from the diamine monomer: 12G1 having three long-chain alkyl groups (carbon number: 12) ; aliphatic tetracarboxylic dianhydride; Cyclo-DA. or aromatic tetracarboxylic dianhydride; DSDA as a dianhydride, and DDE as a diamine co-monomer. Thin films of the obtained polyimides were irradiated by UV light (2max; 254 nm), and the contact angles for the water decreased from near 100° (hydrophobicity) to near 20 (hydrophilicity) in proportion to the irradiated UV light energy. From the results of contact angle measurements and the results of the ATR analysis, we recognized that the hydrophobic long-chain alkyl groups on the polyimide surface decrease and that the hydrophilic groups such as a hydroxyl group generate on their surface. Thus, the surface wettability of polyimides bearing long-chain alkyl groups can be controlled by UV light irradiation, such methods are expected to be applied in the field of printable electronics. [ABSTRACT FROM AUTHOR]

Published
2011
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10. Preparation of Porous Structure from ABA-type Triblock Copolymers Derived from 6FDA-TeMPD Polyimide Macroinitiators.

Author

MIYATA, SOU, SHIROKURA, HAYATO, and NAGAI, KAZUKIYO

Subjects
POROUS electrodes, METHYL methacrylate, BLOCK copolymers, GRAVIMETRIC analysis, POLYMERIZATION, CHEMICAL reactions, TRANSITION temperature
Abstract

A fluorine-containing polyimide macroinitiator was synthesized from 2,2'-bis(3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA) and 2,3,5,6-tetramethyl-l,4-phenylene diamine (TeMPD). An ABA-type triblock copolymer having both thermally stable polyimide blocks and thermally labile poly (methyl methacrylate) blocks was prepared from the 6FDA-TeMPD macroinitiator by atom transfer radical polymerization. The thermal properties of the macroinitiator and the triblock copolymer were examined by several types of analyses, including thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA). The macroinitiator showed high glass transition temperature (Tg: 391°C) and high thermal decomposition temperature (more than 500°C in nitrogen). On the other hand, the triblock copolymer film showed phase separation morphology supported by DMA data. The nanoporous structure with pore sizes in the range of 50-100 nm could be prepared by heating the triblock copolymer film to induce the thermal degradation of the PMMA block at 300°C for 12 hours. A low dielectric constant of 2.36 was obtained for the nanoporous film. [ABSTRACT FROM AUTHOR]

Published
2009
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11. Evaluation Analysis Method of Polyimide Medium Density ablator

Author

Furuichi, Sayaka, Kubota, Yuki, Umezu, Shinjiro, and Suzuki, Toshiyuki

Subjects
Middle Density Ablator, Ablation Analysis, Ablator, Polyimide
Abstract

平成30年度衝撃波シンポジウム (2019年3月5日-7日. 横浜国立大学経済・経営学部講義棟1号館 ）横浜市, 神奈川県, Symposium on Shock Waves in Japan, FY2018 (March 5-7, 2019. Yokohama National University), Yokohama, Kanagawa, 資料番号: SA6000134047, レポート番号: 1C4-2

Published
2019

12. Evaluation for insulation degradation properties in proton beam irradiated polyimide films

Author

Uchiyama, Ryo, Horiguchi, Kohei, Ou, Shin, Miyake, Hiroaki, and Tanaka, Yasuhiro

Subjects
ポリイミド, Conductivity, 宇宙機, 絶縁材料, Insulating material, Proton beam irradiation, プロトン照射, Spacecraft, 空間電荷, 導電率, Space charge, Polyimide
Abstract

第9回宇宙環境シンポジウム (2012年11月5日-6日. 東京都市大学・世田谷キャンパス), 東京, 9th Spacecraft Enivironment Symposium (November 5-6, 2012, Setagaya Campus, Tokyo City University), Tokyo Japan, The spacecraft like a communication or a broadcasting satellite flying in GEO (Geostationary Orbit) is always exposed to plasma and/or radioactive-rays such as α-, β-, and γ-rays. When the insulating materials, in which the spacecraft is wrapped to keep temperature in it stable, are irradiated by the high energy proton beam, sometimes an unexpected accident due to an electrostatic discharge occurs. However, it has not known how the irradiation affects to change of the electrical properties of the materials. In our previous research work, we especially focused on an internal charging phenomenon which must affect to the electrical properties of irradiated polyimide for spacecraft. Judging from the measurement results, it is found that a positive charge accumulates in polyimide rapidly up to a certain saturated value, then it gradually decreases even during the proton beam irradiation. As the reason for the phenomenon, we consider the generation of RIC (Radiation Induced Conductivity). In this paper, we tried to measure the space charge distribution and conduction current under DC stress of 100 kV/mm in proton beam irradiated different type of Polyimides to figure out the mechanism of RIC., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0061891024, レポート番号: JAXA-SP-12-017

Published
2013

13. Charging Characteristics in Polyimide Film Irradiated by Proton

Author

Uchiyama, Ryo, Numata, Seiya, Miyake, Hiroaki, Tanaka, Yasuhiro, and Takada, Tatsuo

Subjects
ポリイミド, Conductivity, 宇宙機, 絶縁材料, PEA method, PEA法, プロトン, 電荷分布, Proton-beam, Dielectric material, Charge distribution, Spacecraft, 導電率, Polyimide
Abstract

第8回宇宙環境シンポジウム (2011年10月18-19日. 東京国際展示場), 東京, 8th Spacecraft Enivironment Symposium (October 18-19, 2011, Tokyo Big Sight), Tokyo Japan, Spacecraft sometimes have a serious damage due to the electro static discharge accident. It is said that the charge accumulation in dielectric materials on spacecraft irradiated by high energy charged particles in space environment causes the discharge accident. Therefore, we need to investigate the charge accumulation characteristics in the bulk of dielectric materials. We have been developing a system for measuring internal charge distribution in dielectric materials using Pulsed Electro-Acoustic (PEA) method. Using the system, we tried to measure the charge distribution after proton beam irradiated polyimide (PI) film, which has been used as a thermal control layer of spacecraft. From the result, it is found that positive charge accumulates in PI film rapidly up to a certain saturated value, then it gradually decreases during the proton beam irradiation. As the reason for the phenomenon, we consider the RIC (Radiation Induced Conductivity) by proton beam. In this paper, we show the typical charge distribution under proton beam irradiation and the conductivity in PI irradiated by proton beam. As the result, it is found that the relationship of decrease processes in amount of positive charge and RIC., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0065159023, レポート番号: JAXA-SP-11-012

Published
2012

14. Report on SM/MPAC first evaluation (initial analysis)

Author

Neish, Michael J., Kitazawa, Yukihito, Noguchi, Takaaki, Yamagata, Ichiro, Kimoto, Yugo, Ishizawa, Junichiro, Suzuki, Mineo, and Fujiwara, Akira

Subjects
dust swarm, ポリイミド, 宇宙ダスト, メテオロイド, cosmic dust, space debris, 国際宇宙ステーション, サービスモジュール, 微小粒子捕獲, International Space Station, polyimide, Micro-Particle Capture, 微小粒子, microparticle, シリカエアロジェル, ダスト雲, アルミ合金, 宇宙デブリ, MPAC, ダストコレクタ, aluminum alloy, Service Module (ISS), silica aerogel, meteoroid, dust collector
Abstract

「ダスト捕獲実験」(MPAC: Micro-Particle Capturer)は、ISS(International Space Station)軌道上の宇宙ダスト(メテオロイド&デブリ)の存在量や組成などの調査を目的とする。この実験により、宇宙環境モデルの最新化に貢献するとともに、ISSの安全な宇宙活動に支障をきたす恐れのある微小粒子環境の把握、搭載機器や機構・部品などへダスト衝突の影響、ISSから放出されるダスト(2次デブリを含む)などの評価が可能と考えられる。ここでは1次評価(初期分析)の中間結果として、全体目視観察およびダスト捕獲材として「シリカエアロジェル」を用いた実験を中心に報告する。, 資料番号: AA0063224003, レポート番号: JAXA-SP-06-021

Published
2007

15. Evaluation results of SEED samples proposed by JAXA in the micro-particle capturer and materials exposure experiments (SM/MPAC & SEED) using Russian Service Module of International Space Station

Author

Yamagata, Ichiro, Miyazaki, Eiji, Ishizawa, Junichiro, Shimamura, Hiroyuki, Mori, Kazuyuki, and Suzuki, Mineo

Subjects
ポリイミド, Flexible Optical Solar Reflectance, electron beam, SEED, 紫外線, フレキシブル太陽光反射素子, 国際宇宙ステーション, Space Environment Exposure Device, International Space Station, polyimide, 原子状酸素, 宇宙実験, F-OSR, ultraviolet ray, aerospace environment, 曝露, シリコーン, atomic oxygen, 航空宇宙環境, paint, exposure, spaceborne experiment, silicone, 材料曝露実験装置, 塗料, 電子ビーム
Abstract

軌道上宇宙環境の把握、宇宙用部品・材料の耐宇宙環境性評価、高性能・長寿命材料の開発、JAXA認定部品・材料の宇宙実証を目的として、国際宇宙ステーション(ISS: International Space Station)を利用した宇宙実験である、「国際宇宙ステーションロシアサービスモジュール利用微小粒子捕獲実験および材料曝露実験」(SM/MPAC&SEED実験: Service Module/Micro-Particle Capturer and Space Environment Exposure Device)を、2001年8月より開始している。本実験は、同一試料構成の実験装置3式を同時にISS外壁で宇宙空間に曝露開始し、約1年間隔で1式ずつ地上に回収するというものである。本材料曝露実験に供している試料は、JAXAのほか、大学、研究機関、メーカから提案を受け、23種類の試料が選定されている。本稿では、JAXAから提案した宇宙用材料について、第2式目回収試料(曝露期間約28ヶ月)を中心に報告する。, 資料番号: AA0063224011, レポート番号: JAXA-SP-06-021

Published
2007

16. ソーラーセイル薄膜展開実験について

Author

Shimose, Shigeru

Subjects
ポリイミド, 遠心力, large space structure, thin film, solar radiation, centrifugal force, 太陽風, 大型宇宙構造物, Quantitative Biology::Other, polyimide, 展開, ソーラーセイル, Physics::Popular Physics, solar wind, 薄膜, membrane structure, Physics::Space Physics, deployment, 太陽放射, Astrophysics::Earth and Planetary Astrophysics, 膜構造物, solar sail
Abstract

Solar Sail move by receiving momentum of photons in sunlight. This paper presents results of some Spin-Stabilized Solar Sail deployment experiment. ISAS has successfully deployed, for the first time in the world, the polyimide Solar Sail taking advantage of centrifugal force in space. Based on this result, the new deployment mechanism is being developed which retracts the 50 m diameter sail., 資料番号: AA0049500052, レポート番号: JAXA-SP-06-006

Published
2006

17. Fracture morphology of thin films impacted by debris substitutes: Relation with constraint conditions

Author

Tada, Shoichiro, Miura, Atsushi, Toyama, Fumio, Yamori, Akira, and Sasaki, Susumu

Subjects
拘束, ポリイミド, 境界, 超高速衝突, 超高速飛翔体, レールガン加速装置, thin film, constraint, space debris, aerospace environment, hypervelocity impact, polyimide, boundary, 航空宇宙環境, 薄膜, fracture, 破損, 宇宙デブリ, solar array, 太陽電池アレイ, railgun accelerator, hypervelocity projectile
Abstract

資料番号: AA0063347034

Published
2005

18. Experiments of hypervelocity impact simulating space debris collisions on a thin film by means of a railgun accelerator

Author

Miura, Atsushi, Tada, Shoichiro, Toyama, Fumio, Yamori, Akira, and Sasaki, Susumu

Subjects
太陽電池, ポリイミド, thermal damage, レールガン加速装置, 超高速飛翔体, thin film, space debris, aerospace environment, hypervelocity impact, ejecta, polyimide, 放出物, 熱的損傷, solar cell, 航空宇宙環境, polycarbonate, 薄膜, 極超音速衝突, ポリカーボネート, 宇宙デブリ, railgun accelerator, hypervelocity projectile
Abstract

資料番号: AA0063347019

Published
2005

21. Minimum ballistic coefficients of Venus exploration: Possibility of an aerocapture satellite

Author

Nakazawa, Eiko, Yamada, Kazuhiko, and Suzuki, Kojiro

Subjects
ポリイミド, 金星大気, エアロキャプチャ衛星, atmospheric model, 空力加熱, ballistic coefficient, feasibility study, 弾道係数, polyimide, research and development, 運動方程式, 大気モデル, 予備調査, equation of motion, Venus atmosphere, membrane structure, aerodynamic heating, 金星探査, Venus probe, aerocapture satellite, 圧力履歴, pressure hysteresis, 膜構造, 研究開発
Abstract

資料番号: AA0045913027

Published
2003

22. 原子状酸素と真空紫外線による炭素系高分子材料の表面性状変化

Author

Yokota, Kumiko, Tagawa, Masahito, and Omae, Nobuo

Subjects
inorganic chemicals, ポリイミド, mass-loss phenomenon, X-ray photoelectron spectroscopy, X線光電子分光, LEO, 超高真空, polyimide, atomic oxygen beam exposure, 酸素原子, oxygen atom, Physics::Atomic and Molecular Clusters, Physics::Atomic Physics, Physics::Chemical Physics, 原子酸素ビーム照射, 質量損失現象, ultrahigh vacuum, ultraviolet exposure, UV露出
Abstract

Surface properties of atomic oxygen-exposed and ultraviolet-exposed polyimide were studied by X-ray photoelectron spectroscopy and contact angle measurements. Atomic oxygen-induced oxidation of polyimide surface was clearly observed after atomic oxygen beam exposures; in contrast, surface composition and surface chemical states were hardly changed due to ultraviolet exposures in ultrahigh vacuum. Contact angle measurements showed a formation of high-energy surface by atomic oxygen beam exposure. It was concluded that atomic oxygen exposure induces not only well-known mass-loss phenomena, but also change in surface properties of polyimide., 資料番号: AA0045438036

Published
2003

26. 衛星用絶縁材料の真空中における表面抵抗率・体積抵抗率測定

Author

Komiyama, Takeyuki, Nitta, Kumi, Yamano, Yasushi, and Kobayashi, Shinichi

Subjects
絶縁, high vacuum, ポリイミド, 絶縁材料, 電気抵抗率, insulator, aerospace environment, polyimide, 航空宇宙環境, paint, Astrophysics::Solar and Stellar Astrophysics, electrical insulation, 宇宙機構造材料, 塗料, 高真空, Physics::Atmospheric and Oceanic Physics, spacecraft construction material, electrical resistivity
Abstract

This paper investigates surface and volume resistivity of insulator materials used for the artificial satellites. Measurements were carried out under vacuum and atmospheric conditions respectively. The measured materials are two kinds of white paints which are used for the antenna portion of satellites, two kinds of glasses which are used for the cover glass of solar panel and a polyimide film which are used for the thermal control material on the satellite. It was confirmed that the surface resistivity for almost all of the insulator materials except for polyimide film under vacuum condition was higher than that under atmospheric condition. Desorption of moisture vapor from the insulator surface is the main cause of the increase of the surface resistivity in vacuum. On the other hand, their volume resistivity except for the white paints had no difference between vacuum and atmospheric conditions. White paints under vacuum condition showed the higher volume resistivity than that of atmospheric condition., 資料番号: AA0063997022, レポート番号: JAXA-SP-07-030

Published
2008

27. Estimation of volume resistivity of dielectric films under electron irradiation

Author

Watanabe, Rikio, Miyake, Hiroaki, and Nitta, Kumi

Subjects
spacecraft charging, ポリイミド, electron beam, 電子照射, electron irradiation, 宇宙機帯電, aerospace environment, satellite design, polyimide, electric field, 航空宇宙環境, satellite surface, volume resistivity, 体積抵抗率, 電場, 衛星設計, 誘電体, 衛星表面, 宇宙機構造材料, dielectric, 電子ビーム, spacecraft construction material
Abstract

A new measurement method for volume resistivity of dielectric material has been tested and compared to the standard ASTM (American Society for Testing and Materials) 'capacitor method'. This is intended for obtaining resistivity values of highly insulated material for spacecraft surface under realistic condition which simulates vacuum and electron beam irradiation. The resistivity value is calculated from exponential decay time constant of surface potential after electron beam irradiation ceased. The results show that the resistivity value from present method is 10(exp 3) times larger than that obtained from capacitor method. This indicates that charged dielectrics need much longer field relaxation time which would cause reconsideration of current spacecraft design guideline and charge analysis., 資料番号: AA0063997016, レポート番号: JAXA-SP-07-030

Published
2008

28. Evaluation of the exposure tests of composite materials for spacecraft structure

Author

Arakawa, Yoji

Subjects
ポリイミド, 国際宇宙ステーション, International Space Station, polyimide, carbon fiber, ultrasonic flaw detection, 炭素繊維, space weathering, 複合材料, ポリシアネート, 宇宙機構造材料, PAN-based carbon fiber, ピッチ系炭素繊維, 宇宙実験, 超音波探傷, aerospace environment, 曝露, composite material, polycyanate, 航空宇宙環境, PAN系炭素繊維, exposure, pitch-based carbon fiber, spaceborne experiment, 宇宙風化, spacecraft construction material
Abstract

現在、多くの宇宙機に軽量化を目的として炭素繊維強化プラスチックを初めとする複合材料が適用されている。複合材料の宇宙空間での適用が増加するとともに、複合材料の宇宙環境因子(電子線、紫外線、熱サイクル、超真空、原子状酸素)による影響に関する宇宙環境を模擬した地上での研究が数多く実施されてきた。しかし、その結果では、複合宇宙環境の影響は、単一環境の単なる足し算とはならないことが知られており、複合材料の宇宙環境での耐久性を正確に知るために、すべての宇宙環境因子を同時に負荷する総合環境での評価が必要である。しかし現実的には、地上ですべての宇宙環境因子を同時に負荷することは困難であるため、宇宙での曝露実験による実証が大きな意味を持つ。つまり、宇宙曝露実験により複合材料への影響を知ると共に、地上対照試験との対応を明らかにすることにより、材料スクリーニング、初期設計段階で適切な材料選定が可能となる。, 資料番号: AA0063224007, レポート番号: JAXA-SP-06-021

Published
2007

29. Next generation thermal control technology for spacecraft using advanced materials

Author

Nagano, Hosei, Uesugi, Takamasa, Ota, Toyonobu, Tachikawa, Sumitaka, and Onishi, Akira

Subjects
フォーム, ゼーベック係数, ポリイミド, thermoelectric pumped loop, 熱電発電ポンプループ, thermal resistance, 比抵抗, Seebeck coefficient, thermoelectric generator, self cooling system, 断熱材, polyimide, thermal design, 耐熱性, 周期加熱, 自己冷却システム, 熱電発電, periodic heating, thermal insulation, thermal conductivity, 熱伝導率, 熱設計, foam, electrical resistivity
Abstract

宇宙機ミッションの多様化に伴い熱制御技術の高度化・高効率化が望まれている。宇宙機熱制御技術の向上を図るため、著者らはこれまで先進材料を用いた放射率可変素子(SRD)や自律型吸放熱デバイス(RTP)の開発を行ってきた。本稿では、2004年度より研究を開始した多孔質ポリイミドや熱電酸化物などの先進材料を用いた次世代熱制御技術の開発について、アプリケーションの提案および熱物性計測手法について報告する。, 資料番号: AA0049122120

Published
2005

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