聚酯表面类金刚石薄膜的制备及疏水性能

doi:10.11901/1005.3093.2016.323

材料研究学报

2017, Vol. 31

Issue (3): 187-194 DOI: 10.11901/1005.3093.2016.323

研究论文

本期目录 | 过刊浏览

聚酯表面类金刚石薄膜的制备及疏水性能

孙丽丽^1,²,郭鹏¹,李晓伟¹,柯培玲¹,汪爱英¹(

)

1 中国科学院宁波材料技术与工程研究所中国科学院海洋新材料与应用技术重点实验室浙江省海洋材料与防护技术重点实验室宁波 315201
2 中国科学院大学北京 100049

Preparation and Hydrophobic Properties of Diamond-like Carbon Films on PET Substrates

Lili SUN^1,²,Peng GUO¹,Xiaowei LI¹,Peiling KE¹,Aiying WANG¹(

)

1 Key Laboratory of Marine Materials and Related Technologies, Key Laboratory of Marine Materials and Protective Technologies of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
2 University of Chinese Academy of Sciences, Beijing 100049, China

引用本文:

孙丽丽,郭鹏,李晓伟,柯培玲,汪爱英. 聚酯表面类金刚石薄膜的制备及疏水性能[J]. 材料研究学报, 2017, 31(3): 187-194.
Lili SUN, Peng GUO, Xiaowei LI, Peiling KE, Aiying WANG. Preparation and Hydrophobic Properties of Diamond-like Carbon Films on PET Substrates[J]. Chinese Journal of Materials Research, 2017, 31(3): 187-194.

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摘要:

采用线性离子束技术在PET基材表面制备类金刚石薄膜,分析薄膜结构、性能随离子束电流的演变规律并研究了薄膜润湿特性与表面形貌、结构、表面能的作用关系。结果表明：沉积在PET表面的类金刚石薄膜具有典型的非晶碳膜结构特征,随着离子束电流的增大sp²/sp³比值由0.774增加到1.622,薄膜表面的石墨化程度提高;改性后的PET材料接触角从63.51°增大到103.7°。进一步分析发现,疏水性能的提高归因于材料表面能的降低,表面石墨化程度的提高和微-纳结构的形成是表面能降低的根本原因。此外,疏水的PET材料在500~760 nm可见光范围内具有一定的増透效果,透过率达到88.5%以上。用线性离子束沉积碳膜及刻蚀技术能得到合适的微观形貌和表面化学结构,可在保持基体材料透明性的同时提高PET柔性聚合物材料的疏水性能。

关键词 ：有机高分子材料, 疏水性, 类金刚石, 表面形貌, 表面能

Abstract：

In order to achieve hydrophobic properties and good wear resistance of PET materials, diamond-like carbon films were deposited on PET substrates by linear ion beam (LIS) technology with varying ion beam current. The microstructure, morphology and wettability were analyzed, and the relationship between wetting behavior and surface morphology, microstructure, surface energy was investigated. The results show that the deposited diamond-like carbon film is typical amorphous carbon, its sp²/sp³ increased from 0.774 to 1.622 with increase of LIS current, which indicated the increased graphitization. Meanwhile, the water contact angle of PET increased from 63.51° to 103.7°. Further analysis found that the hydrophobicity can be attributed to the enhanced graphitization and formation of nano-micro structure, which could result in a decrease of surface energy. In addition, the transmissivity in visible light range of PET could reach to over 88.5%, which showed an enhanced effect within the range of 500~760 nm. Therefore, controlling proper surface morphology and low surface energy by plasma modification technology can effectively improve the hydrophobic properties of flexible polymer materials, while the transparency of PET material was maintained.

Key words： organic polymer materials hydrophobicity diamond-like carbon surface morphology surface energy

收稿日期: 2016-06-11

基金资助:国家国际科技合作专项(2014DFG52430)

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https://www.cjmr.org/CN/10.11901/1005.3093.2016.323 或 https://www.cjmr.org/CN/Y2017/V31/I3/187

表1 DLC薄膜沉积参数表

图1 样品接触角的变化

图2 样品的表面能及表面能各分量的变化

图3 PET沉积碳膜后的拉曼光谱图

图4 不同样品的元素含量、C 1s 结合能谱及sp2/sp3变化

图5 不同样品的表面粗糙度变化

图6 不同样品的SEM表面形貌图

图7 不同DLC处理样品与PET基体之间的高度差

图8 可见光范围内疏水样品3#和4#的透过率

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