氧化石墨烯/聚酰亚胺复合薄膜的制备及阻水性能

文溢; 付志兵; 邓才波; 王朝阳; 胡小平

doi:10.13801/j.cnki.fhclxb.20180502.009

氧化石墨烯/聚酰亚胺复合薄膜的制备及阻水性能

doi: 10.13801/j.cnki.fhclxb.20180502.009

1.
西南科技大学材料科学与工程学院, 绵阳 621010;
2.
中国工程物理研究院激光聚变研究中心, 绵阳 621900

基金项目: 国家自然科学基金（51673160）；西南科技大学研究生创新基金（17ycx015）

详细信息

通讯作者:
胡小平,博士,教授,硕士生导师,研究方向为高分子材料功能化与高性能化,E-mail:huxiaoping@swust.edu.cn

中图分类号: TB332
计量
- 文章访问数: 810
- PDF下载量: 326
- 被引次数: 0
出版历程
- 收稿日期: 2018-02-20
- 修回日期: 2018-04-25
- 刊出日期: 2019-01-15

Preparation and water-blocking property of graphene oxide/polyimide composite film

1.
School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China;
2.
Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China

摘要

摘要: 以石墨粉为原料，采用改进的Hummers法制备氧化石墨烯（GO），采用原位聚合法制备GO/聚酰亚胺酸（PAA）前驱体，GO/PAA前驱体经高温固化处理后得到GO/聚酰亚胺（PI）复合薄膜；采用XRD、Raman、FTIR、AFM等表征手段对GO的结构进行表征；此外，研究了不同固化温度下PI薄膜的结构；最后测试了GO/PI复合薄膜的透湿率和力学性能。结果表明：GO为单层结构，厚度为1.26 nm。GO/PI复合薄膜表现出良好的阻水性能，当GO/PI复合薄膜中GO的添加量为0.025wt%、薄膜厚度为50 μm时，GO/PI复合薄膜的透湿率低至56.7 g（m²·d）^-1。此外，0.025wt% GO/PI复合薄膜拉伸强度和断裂伸长率分别为150.8 MPa和13.5%，与PI薄膜（分别为126.9 MPa和8.1%）相比，分别增加了18.8%和66.7%。
- 氧化石墨烯 /
- 聚酰亚胺 /
- 薄膜 /
- 透湿率 /
- 力学性能
Abstract: Graphene oxide (GO) was prepared by the modified Hummers method with graphite powder as the raw material. The GO/polyamic acid (PAA) precursor was synthesized by in-situ polymerization, and further imidized into GO/polyimide(PI) film by heating. The GO was characterized by XRD, Raman, FTIR and AFM, and the structure of PI films at different curing temperatures was studied. Then, the water vapor transmission rate and mechanical properties of GO/PI film were tested. The results reveal that the GO has a single layer structure with its thickness of 1.26 nm. The GO/PI composite film exhibites good water resistance performance. The water vapor transmission rate of the GO/PI composite film (thickness of the film is 50 μm) containing 0.025wt% GO is as low as 56.7 g(m²·d)^-1. The mechanical properties measurements suggest that the tensile strength and the elongation at break of the 0.025wt%GO/PI composite film are 150.8 MPa and 13.5%, respectively, increasing by 18.8% and 66.7% as compared to that of PI film (126.9 MPa and 8.1%).
- graphene oxide /
- polyimide /
- film /
- water vapor transmission rate /
- mechanical property