1、Enhancement of thermo

In this work, PI films, aluminum-coated PI film, and copper-coated PI film with low oxygen permeability were used as surface oxygen barrier materials, and surface film modified polyimide composites were prepared.

2、WANG Shan, JIANG Shuai, HAN Xuhui, ZHAO Jia, CHAI

Research Progress on High-Performance Polyimide Resins and Their Composites WANG Shan, JIANG Shuai, HAN Xuhui, ZHAO Jia, CHAI Chunpeng(School of Materials Science and Engineering, Beijing...

3、Discovering polyimides and their composites with targeted mechanical

In this study, we introduce a machine learning-based approach to predict and optimize the mechanical properties of PI materials and their composites.

Innovative Polyimide Modifications for Aerospace and Optoelectronic

This study pioneers a molecular topology engineering strategy by incorporating a twisted diamine motif into polyimide (PI) backbones, achieving an unprecedented integration of thermal stability, mechanical robustness, and optoelectronic functionality that surpasses conventional high-performance PIs.

Research Progress and Application of Polyimide

Here, this review briefly summarizes the current research progress of PI-based composites, including molecular design, manufacturing process, combination methods, and their relevant applications. Hence, the study will pave the way for further research on PI-based nanocomposites.

Research and Application Progress of Composite Polyimide with Low

The research and application progress of porous polyimides, polymers filler and inorganic nano filler composite modified polyimides and other composite low dielectric polyimides...

Improved Thermal

By modulating the structure of an epoxy resin, they successfully enhanced its yield strength. The key steps in this research involved analyzing the radial distribution functions and X-ray diffraction patterns, which were then compared with experimental results.

Low

The obtained polyimide resins exhibited exceptional comprehensive properties, indicating their great potential as matrix resins in the applications of heat resistant, wave transparent composites for the aerospace industry.

Research Progress on High

We mainly review the melt processability, solubility, and dielectric properties modification of thermoplastic polyimide resins in recent years, as well as the functional research of their...

Designs and recent progress of intrinsic low dielectric polyimide films

Finally, the key issues and challenges faced in the advancement of intrinsic low dielectric polyimides are elaborated, and the outlooks of the design of the materials are furtherly outlined.

With the rapid development of science and technology, new synthesis methods and improvement techniques continue to emerge in the field of materials science. Polyimide (PI), as a high-performance thermosetting polymer, has been widely used in aerospace, electronic packaging, biomedicine, and other fields due to its excellent mechanical properties, chemical stability, and electrical insulation. traditional polyimide resins have certain limitations, such as high cost and difficult processing, which restrict their application in broader fields. modifying polyimide resins to enhance their performance and expand their application range has become an urgent problem to solve. This article reviews the research progress on the modification of polyimide resins.

1. Basic Characteristics of Polyimide Resins

Polyimide is a thermosetting polymer material with a highly cross-linked structure. Its molecular chains form a three-dimensional network structure through the formation of imide rings. This structure endows polyimide with extremely high mechanical strength, good chemical stability, and excellent electrical insulation properties. In addition, polyimide exhibits good heat resistance, radiation resistance, and solvent resistance, making it an ideal material for manufacturing high-performance electronic components.

2. Methods for Modifying Polyimide Resins

1. Blending Modification

Blending modification involves adding other polymers or inorganic fillers to the polyimide matrix to form composite materials. This method can effectively improve the mechanical properties, thermal stability, and dimensional stability of polyimide while reducing costs. Common blending systems include polyether sulfone/polyamic acid, polyether sulfone/polyimide, and polyether sulfone/epoxy resin.

2. Graft Modification

Graft modification refers to introducing monomers into the polyimide molecular chain through chemical reactions to form block or branched structures. This method can improve the solubility, processability, and mechanical properties of polyimide. For example, graft modification can enhance the impact resistance and wear resistance of polyimide.

3. Nanofiller Modification

Nanofiller modification is achieved by adding nanoscale fillers to the polyimide matrix. Nanofillers such as carbon nanotubes, graphene, and silicon nanoparticles possess excellent mechanical properties, conductivity, and thermal stability, significantly improving the performance of polyimide.

4. Surface Treatment Modification

Surface treatment modification is realized by coating a protective or functional layer on the surface of polyimide. For example, surface coating can provide polyimide with better corrosion resistance, wear resistance, and biocompatibility.

3. Application Prospects of Polyimide Resin Modification

The application prospects of polyimide resin modification technology are very broad. In the aerospace field, blending modification and graft modification can be used to prepare high-performance composite materials with better comprehensive properties, meeting the requirements of spacecraft under extreme conditions. In the electronic packaging field, nanofiller modification and surface treatment modification can be employed to fabricate electronic devices with higher reliability and longer lifespan. In the biomedical field, surface treatment modification can produce medical materials with better biocompatibility, satisfying the special requirements of medical devices for materials.

Modification of polyimide resins is one of the key approaches to achieving high performance and multifunctionality. Through methods such as blending modification, graft modification, nanofiller modification, and surface treatment modification, the performance and application range of polyimide can be effectively enhanced. With the continuous development of new material technologies, polyimide resin modification technology will usher in even broader development prospects.