氩气等离子体处理对芳<strong>Ⅲ/</strong>环氧复合材料界面性能的影响

doi:10.11901/1005.3093.2024.310

材料研究学报

2025, Vol. 39

Issue (3): 185-197 DOI: 10.11901/1005.3093.2024.310

研究论文

本期目录 | 过刊浏览

氩气等离子体处理对芳Ⅲ/环氧复合材料界面性能的影响

王静(

), 何文政, 杨爽, 耿闻, 任荣, 熊需海

沈阳航空航天大学材料科学与工程学院辽宁省先进聚合物基复合材料制备技术重点实验室沈阳 110136

Effect of Argon Plasma Treatment on Interface Performance of Aramid Fiber Ⅲ / Epoxy Composites

WANG Jing(

), HE Wenzheng, YANG Shuang, GENG Wen, REN Rong, XIONG Xuhai

Liaoning Key Laboratory of Advanced Polymer Matrix Composites Manufacturing Technology, School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China

引用本文:

王静, 何文政, 杨爽, 耿闻, 任荣, 熊需海. 氩气等离子体处理对芳Ⅲ/环氧复合材料界面性能的影响[J]. 材料研究学报, 2025, 39(3): 185-197.
Jing WANG, Wenzheng HE, Shuang YANG, Wen GENG, Rong REN, Xuhai XIONG. Effect of Argon Plasma Treatment on Interface Performance of Aramid Fiber Ⅲ / Epoxy Composites[J]. Chinese Journal of Materials Research, 2025, 39(3): 185-197.

全文: PDF(5156 KB) HTML

摘要:

用氩气等离子体处理芳Ⅲ纤维的表面，将处理前后的芳Ⅲ纤维和环氧树脂制备单丝复合材料。使用X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、光学显微镜(OM)、原子力显微镜(AFM)、动态接触角分析(DCAA)、单丝拉伸强度以及微滴脱粘测试等手段对其表征，研究了氩气等离子体处理对纤维表面的元素组成、表面形貌、表面浸润性能、单丝拉伸强度以及复合材料界面强度的影响，并使用Materials Studio (MS)软件计算了纤维的结构解离能。结果表明，等离子体处理5~30 min在纤维表面引入了新的基团(―C―O―、O＝C―O、―NH₂)、纤维表面的粗糙度由134 nm提高到214 nm、纤维表面的浸润性能由46.14 mJ/m²提高到68.52 mJ/m²、纤维表面形貌出现凹凸不平并随着处理时间的延长呈现周期性变化；随着等离子体处理时间的延长，纤维的单丝拉伸强度缓慢降低，用等离子体处理10 min的芳纶Ⅲ/环氧的界面剪切强度(IFSS)由28.51 MPa提高到38.02 MPa。

关键词 ：材料表面与界面, 界面性能, 氩气等离子体, 芳纶纤维

Abstract：

Domestically produced Aramid fiber III are extensively utilized in aerospace and other military industries on account of their advantages like high specific strength and high specific modulus. Nevertheless, the drawbacks of its smooth surface, scarcity of active groups, and poor bonding performance with the resin matrix restrict the outstanding performance of its composite materials. In view of the above shortcomings, the surface of AF III was modified via argon plasma, and then monofilament composites of epoxy resin with the untreated and argon plasma treated aramid fiber III was fabricated respectively. The influence of argon plasma treatment time on the surface composition, surface morphology, surface wetting properties, monofilament tensile strength of the fiber and the interfacial bonding strength of composite material were investigated respectively by X-ray photoelectron spectroscopy (XPS), Scanning Electron Microscopy (SEM), Optical Microscopy (OM), Atomic Force Microscopy (AFM), Dynamic Contact Angle Analyzer (DCAA), Monofilament Tensile Strength and Micro-droplet Debonding Test, as well as interface strength test. The structural dissociation energy of the plasma-treated fiber was calculated using Materials studio (MS) software. The results indicated that after plasma treatment for 5 min~30 min, new groups (―C―O―, O＝C―O, ―NH₂) were introduced on the fiber surface; while the fiber surface roughness increased from 134 nm untreated to 214 nm; and the fiber surface wettability property was enhanced from 46.14 mJ/m² for the bare fiber to 68.52 mJ/m² for the argon plasma treated one, representing an increase of 48.44%. The surface of plasma treated fibers showed uneven morphology and changed periodically with the extension of treatment time; the strength of fiber monofilament decreased gradually with the increasing plasma treatment time. Besides the results of the microdroplet debonding test demonstrated that, after plasma treatment for 10 min, the interfacial shear strength (IFSS) of AF III/epoxy was increased from 28.51 MPa for the untreated fiber to 38.02 MPa for the treated one, which was improved by 33.36%.

Key words： surface and interface in the materials interface performance argon plasma aramid fiber

收稿日期: 2024-07-17

ZTFLH:

TB324

基金资助:国家自然科学基金(51403129);航空科学基金(2024Z048054002)

通讯作者: 王静，副教授，jingwang_1217@126.com，研究方向为航空复合材料

Corresponding author: WANG Jing, Tel: 13840156479, E-mail:jingwang_1217@126.com

作者简介: 王静，1981年生，博士

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https://www.cjmr.org/CN/10.11901/1005.3093.2024.310 或 https://www.cjmr.org/CN/Y2025/V39/I3/185

图1 芳Ⅲ纤维(F-368)的化学结构式

图2 芳Ⅲ/环氧复合材料的制备和测试

Liquid	$γ l$ / (mJ·m^-2)	$γ l p$ / (mJ·m^-2)	$γ l d$ / (mJ·m^-2)
Water	72.3	53.6	18.7
Diiodomethane	50	2.6	47.4

表1 水和二碘甲烷的表面能

图3 氩气等离子体处理后芳Ⅲ的XPS全谱扫描结果

图4 氩气等离子体处理后芳Ⅲ的C1s分峰谱

图5 氩气等离子体处理后芳Ⅲ表面N1s分峰谱

图6 氩气等离子体处理后芳Ⅲ表面的O1s分峰谱

图7 氩气等离子体处理后芳Ⅲ的AFM

图8 氩气等离子体处理不同时间后芳Ⅲ的拉伸强度

图9 氩气等离子体处理后芳Ⅲ 的动态接触角和表面能

图10 微滴脱粘

图11 芳Ⅲ/环氧微滴脱粘显微镜照片

图12 微滴脱粘前后芳Ⅲ的SEM图像

图13 计算芳Ⅲ中解离能的化学键位置

表2 芳Ⅲ的解离能

图14 氩气等离子体处理芳Ⅲ时可能发生的反应

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