|
1
|
Abstract
AbstractPolyimides, high-performance polymers with superior properties such as high temperature stability, resistance to solvents and high strength, can be used in high-tech applications of the aerospace and aviation, medical or electronics industry in different forms (film, fiber, nanofiber, membrane, foam, adhesive or coating). Among these applications, coating has a special place and is used to develop advanced structures having high temperature resistance, flame retardancy and etc. for high tech industries via an economical and feasible way. Therefore, in this review, we aimed to report the broad application status of polyimide coatings by reviewing publications, patents and commercial products. Thus, this study can assist in selecting suitable polyimide types and production methods for polyimide coating applications and in understanding their applicability for future products.
Collapse
|
|
3
|
Tan YY, Zhang Y, Jiang GL, Zhi XX, Xiao X, Wu L, Jia YJ, Liu JG, Zhang XM. Preparation and Properties of Inherently Black Polyimide Films with Extremely Low Coefficients of Thermal Expansion and Potential Applications for Black Flexible Copper Clad Laminates. Polymers (Basel) 2020; 12:polym12030576. [PMID: 32150853 PMCID: PMC7182821 DOI: 10.3390/polym12030576] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 11/26/2022] Open
Abstract
In the current work, a series of black polyimide (PI) films with excellent thermal and dimensional stability at elevated temperatures were successfully developed. For this purpose, two aromatic diamines including 4,4′-iminodianline (NDA) and 2-(4-aminophenyl)-5- aminobenzimidazole (APBI) were copolymerized with pyromellitic dianhydride (PMDA) to afford PIs containing imino groups (–NH–) in the molecular structures. The referenced PI film, PI-ref, was simultaneously prepared from PMDA and 4,4′-oxydianiline (ODA). The introduction of imino groups endowed the PI films with excellent blackness and opaqueness with the optical transmittance lower than 2% at the wavelength of 600 nm at a thickness of 25 μm and lightness (L*) below 10 for the CIE (Commission International Eclairage) Lab optical parameters. Meanwhile, the introduction of rigid benzimidazole units apparently improved the thermal and dimensional stability of the PI films. The PI-d film based on PMDA and mixed diamines (NDA:APBI = 70:30, molar ratio) showed a glass transition temperature (Tg) of 445.5 °C and a coefficient of thermal expansion (CTE) of 8.9 × 10−6/K in the temperature range of 50 to 250 °C, respectively. It is obviously superior to those of the PI-a (PMDA-NDA, Tg = 431.6 °C; CTE = 18.8 × 10−6/K) and PI-ref (PMDA-ODA, Tg = 418.8 °C; CTE: 29.5 × 10−6/K) films.
Collapse
Affiliation(s)
- Yao-yao Tan
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (Y.-y.T.); (G.-l.J.); (X.-x.Z.); (L.W.); (Y.-J.J.)
| | - Yan Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (Y.-y.T.); (G.-l.J.); (X.-x.Z.); (L.W.); (Y.-J.J.)
- Correspondence: (Y.Z.); (J.-g.L.); (X.-m.Z.); Tel.: +86-10-8232-2972 (Y.Z., J.-g.L. & X.-m.Z.)
| | - Gang-lan Jiang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (Y.-y.T.); (G.-l.J.); (X.-x.Z.); (L.W.); (Y.-J.J.)
| | - Xin-xin Zhi
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (Y.-y.T.); (G.-l.J.); (X.-x.Z.); (L.W.); (Y.-J.J.)
| | - Xiao Xiao
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (Y.-y.T.); (G.-l.J.); (X.-x.Z.); (L.W.); (Y.-J.J.)
| | - Lin Wu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (Y.-y.T.); (G.-l.J.); (X.-x.Z.); (L.W.); (Y.-J.J.)
| | - Yan-Jiang Jia
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (Y.-y.T.); (G.-l.J.); (X.-x.Z.); (L.W.); (Y.-J.J.)
| | - Jin-gang Liu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China; (Y.-y.T.); (G.-l.J.); (X.-x.Z.); (L.W.); (Y.-J.J.)
- Correspondence: (Y.Z.); (J.-g.L.); (X.-m.Z.); Tel.: +86-10-8232-2972 (Y.Z., J.-g.L. & X.-m.Z.)
| | - Xiu-min Zhang
- School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
- Correspondence: (Y.Z.); (J.-g.L.); (X.-m.Z.); Tel.: +86-10-8232-2972 (Y.Z., J.-g.L. & X.-m.Z.)
| |
Collapse
|