Fabrication of Ultrathin Polyimide Optical Filter Films Zhuhai College of Science and Technology

Format:

Book

Conference/Event

Author/Creator:

Huang, Jiehao, author.

Xu, Zihui, author.

Zhao, Kaihong, author.

Lin, Qiting, author.

Hu, Wenzhong, author.

Wang, Liying, author.

Conference Name:

2025 2nd International Conference on Sustainable Development and Energy Resources (SDER 2025) (2025-08-01 : Shenzhen, China)

Language:

English

Subjects (All):

Materials properties.

Polymers.

Coatings, colorants, and finishes.

Chemicals.

Fabrication.

Local Subjects:

Materials properties.

Polymers.

Coatings, colorants, and finishes.

Chemicals.

Fabrication.

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2026

Summary:

Polyimides are a class of polymers with imide rings in their main chains. They are renowned for their exceptional mechanical properties, high-temperature resistance, low-temperature endurance, and resistance to chemical solvents, which allow for long-term use under harsh medical operating conditions. Consequently, research on polyimide films has garnered widespread attention. In this study, a two-step method was employed to simplify and optimize the preparation process of polyimide. Initially, a polyamic acid (PAA) solution was prepared, and PAA films were fabricated using a spin coater. Subsequently, the films were imidized to obtain polyimide (PI) films. The impact of various parameters, such as spinning speed, layer number, and temperature, on the film-forming properties of polyimide was investigated using the method of controlling variables. The findings indicate that by setting the spin coater parameters to 700 revolutions per minute (r/min) for 90 seconds, followed by a transition to a high speed of 2200 r/min for 210 seconds for spinning the PAA solution, and then subjecting the film to a temperature gradient of 100°C for 1 hour, 150°C for 1 hour, 200°C for 2 hours, and 300°C for 2 hours for imidization, a complete and mechanically robust polyimide film can be produced. The average light transmittance of the film across a wavelength range of 400-2500 nm is 90.46%

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