Nano-healing mechanism of surface flaws on high strength carbon fibers with high-temperature vapor deposition polymerization polyimide coatings

高温气相沉积聚合聚酰亚胺涂层高强碳纤维表面缺陷纳米修复机制

• 批准号: 22710091
• 负责人: NAGANUMA Tamaki
• 金额: $ 2.58万
• 依托单位: National Institute for Materials Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22710091/
• 关键词: 表面・界面; ナノ構造; ヒーリング; 高温蒸着重合; 炭素繊維; 繊維引張強度

The effect of polyimide coatings on the filament tensile strength of high strength polyacrylonitrile-based carbon fiber was studied by using a high-temperature vapor deposition polymerization(VDP) coating processes. We found that this coating has a positive impact on those fibers with artificial notches less than 30 nm in depth and the potential to heal nano-ordered surface flaws(nano-flaws) of the fibers, resulting in a 25% increase of the filament tensile strength. The formation of a high-dense phase and a weak interface near a fiber surface seem to contribute to increase the filament tensile strength as well as efficient infiltration of the VDP coating into nano-flaws.

采用高温气相沉积聚合（VDP）法制备了聚酰亚胺涂层，研究了聚酰亚胺涂层对高强度聚丙烯腈基碳纤维单丝拉伸强度的影响。我们发现，这种涂层对那些具有深度小于30 nm的人工切口的纤维具有积极影响，并且有可能修复纤维的纳米有序表面缺陷（纳米缺陷），导致长丝拉伸强度增加25%。纤维表面附近的高密度相和弱界面的形成似乎有助于增加长丝拉伸强度以及VDP涂层有效渗透到纳米缺陷中。

项目成果

Elimination of surface nano-flaws on carbon fiber with VDP polyimide coating

VDP聚酰亚胺涂层消除碳纤维表面纳米缺陷

• 发表时间: 2011
• 作者: Yamashita;H.; Yumura;T.;Tamaki Naganuma
• 通讯作者: Tamaki Naganuma

POLYIMIDE NANOCOATING FOR HEALING SURFACE FLAWS OF CARBON FIBE

用于修复碳纤维表面缺陷的聚酰亚胺纳米涂层

• 发表时间: 2010
• 期刊: PROCEEDINGS 2010 SAMPE EUROPE INTERNATIONAL CONFERENCE & FORUM
• 作者: TAMAKI NAGANUMA;KIMIYOSHI NAITO;JENN-MING YANG;YUTAKA KAGAWA
• 通讯作者: YUTAKA KAGAWA

Polyimide nanocoating for healing surface flaws of carbon fiber

用于修复碳纤维表面缺陷的聚酰亚胺纳米涂层

• 发表时间: 2010
• 期刊: Proceedings 2010 SAMPE Europe International Conference & Forum
• 作者: Tamaki Naganuma;Kimiyoshi Naito;Jenn-Ming Yang;Yutaka Kagawa
• 通讯作者: Yutaka Kagawa

High-temperature vapor deposition polymerization polyimide coating for elimination of surface nano-flaws in high-strength carbon fiber

• DOI: 10.1016/j.carbon.2011.05.026
• 发表时间: 2011-10-01
• 期刊: CARBON
• 影响因子: 10.9
• 作者: Naganuma, Tamaki;Naito, Kimiyoshi;Yang, Jenn-Ming
• 通讯作者: Yang, Jenn-Ming