The effect of N-doped quantum dots on the properties of in situ prepared colorless polyimide nanocomposite films
文献类型:期刊论文
作者 | Yang ZH(杨增辉)1,2; Wang QH(王齐华)1; Wang TM(王廷梅)1; Wang QH(王齐华); Sun Y(孙勇)1,2 |
刊名 | Materials & Design |
出版日期 | 2018 |
卷号 | 140期号:15页码:144-152 |
ISSN号 | 0264-1275 |
关键词 | N-doped Graphene Quantum Dots Polyimide Nanocomposite Films Thermal Properties Mechanical Properties |
DOI | 10.1016/j.matdes.2017.11.041 |
英文摘要 | Conventional polyimide nanocomposites reinforced with graphene-based nanofillers usually possess excellent properties, such as high thermal decomposition temperature, enhanced tensile strength, tensile modulus, etc. However, the elongation at break of the nanocomposites is reduced. Here,we prepared N-doped graphene quantum dots/colorless polyimide nanocomposite (N-GQDs/CPI) films for the first time by in-situ polymerization, whose elongation at break is about 2 times that of the pure film. Meanwhile, the thermal properties and other mechanical properties of the films are improved. Through analyzing FT-IR, XPS, XRD, TAG SEM, etc. of N-GQDs and the films, we consider that the strengthening mechanism of matrix performance is attributed to N-GQDs' well dispersion, its small size effects and strong interface interaction with the matrix. Furthermore, at the indicativewavelength of 550 nm, the optical transmittance of the filmwith 1wt% N-GQDs stillmaintains 79%, indicating the resulting films have excellent optical transmittance. The hydrophilic properties of the prepared films' surface is reduced, their water surface contact angle are increased from 63 ± 2.7° to 92 ± 1.7° with the content of N-GQDs increasing. This research shows that N-GQDs can enhance the various properties of polyimide and provides a high performance nanocomposite films for potential flexible substrates. |
学科主题 | 材料科学与物理化学 |
资助项目 | 聚合物自润滑复合材料研究组 |
语种 | 英语 |
WOS记录号 | WOS:000424943900016 |
资助机构 | the National Natural Science Foundation of China (Grant 51673205) ; the National Basic Research Program of China (973 Program, Grant No. 2015CB057502) |
源URL | [http://210.77.64.217/handle/362003/22800] |
专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 |
通讯作者 | Wang QH(王齐华) |
作者单位 | 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China 2.University of Chinese Academy of Sciences, Beijing 100039, PR China |
推荐引用方式 GB/T 7714 | Yang ZH,Wang QH,Wang TM,et al. The effect of N-doped quantum dots on the properties of in situ prepared colorless polyimide nanocomposite films[J]. Materials & Design,2018,140(15):144-152. |
APA | Yang ZH,Wang QH,Wang TM,Wang QH,&Sun Y.(2018).The effect of N-doped quantum dots on the properties of in situ prepared colorless polyimide nanocomposite films.Materials & Design,140(15),144-152. |
MLA | Yang ZH,et al."The effect of N-doped quantum dots on the properties of in situ prepared colorless polyimide nanocomposite films".Materials & Design 140.15(2018):144-152. |
入库方式: OAI收割
来源:兰州化学物理研究所
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