Morphology and Mechanical Properties of Polyimide Films: The Effects of UV Irradiation on Microscale Surface.

Morphology and Mechanical Properties of Polyimide Films: The Effects of UV Irradiation on Microscale Surface.
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聚酰亚胺薄膜的形貌和机械性能:紫外线照射对微米级表面的影响

DOI:
10.3390/ma10111329
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发表时间:
2017-11-20
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Ding Y
Ding Y
中科院分区:
其他
文献类型:
--
作者:
Qu C;Hu J;Liu X;Li Z;Ding Y

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聚酰亚胺作为一种极具吸引力的介电材料,由于其优良的力学性能和良好的耐化学性,在电子、航空航天、汽车等领域得到了广泛的应用。紫外线照射被认为是导致聚酰亚胺损伤失效的主要因素。用原子力显微镜(AFM)表征了紫外光辐照对聚酰亚胺薄膜表面形态和微观力学性能的影响。随着辐照剂量的增加,紫外光辐照后样品的表面粗糙度增加,力学性能下降。作为对比,进行了单轴拉伸试验,以获得聚酰亚胺薄膜的宏观杨氏模量。采用有限元方法对紫外光辐照损伤深度进行了数值模拟。
As an attractive dielectric material, polyimide has been widely used in the field of electronics, aerospace, and automobiles due to its useful mechanical properties and good chemical resistance. UV irradiation was considered to be the main factor related to the damage and failure of polyimide. Here the effects of UV irradiation on the surface morphology and microscale mechanical properties of polyimide films are characterized by atomic force microscopy (AFM). The surface roughness of the UV-irradiated samples developed and the mechanical properties degraded with the radiation dose increased. For comparison, uniaxial tensile test was performed to obtain the macroscale Young’s modulus of polyimide film. The UV-irradiated damaging depth was simulated with finite element method (FEM).
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发表时间: 2013-03-01
影响因子: 6.7
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