PI

Polyimide (PI) is a material consisting of aromatic dianhydride and diamine monomer and belongs to the group of high-performance engineering plastics. The structure of the PI backbone determines the heat and chemical resistance of PI. The rigidity originating from the combination of the imide structure with an aromatic structure results in a polymer with a very high glass transition temperature (Tg). In addition, the aromaticity of the aromatic groups and the electron-deficient nature of the imide bonds ensure good oxidative stability. These interesting properties make PI highly desirable in automotive, aerospace, electronics and many other applications.

Figure 1. Molecular structure of a typical polyimide.

Alfa Chemistry is a leading global supplier of PI. We are committed to providing you with different specifications of high-quality PI to meet your scientific or industrial applications. Contact us today to discuss your specific needs and let our experts guide you to find the perfect solution to drive your project to success.

Performance Characteristics

PI has a wide range of performance characteristics, including but not limited to the following.

• Excellent thermal stability
• High mechanical strength
• Excellent chemical resistance
• Outstanding electrical insulation properties
• Excellent radiation resistance

• Excellent transparency and optical clarity
• Dimensional stability
• High tensile strength
• Low coefficient of friction

These performance characteristics make PI a highly versatile material used in a variety of industries and research fields.

Applications

Applications of PI include, but are not limited to the following.

• Electronics Industry: Due to its thermal stability, electrical insulation properties and mechanical flexibility, PI is widely used as a dielectric material for flexible printed circuit boards (PCBs) and as an encapsulation material for microelectronic devices.
• Aerospace Industry: PI's excellent thermal stability, mechanical strength and fire resistance are critical in aerospace applications. It is widely used as thermal insulation materials, adhesives and protective coatings for aircraft components.
• Automotive Industry: PI's resistance to high temperatures, chemicals and mechanical stress makes it well suited for use in the automotive field. In this industry, PI is mainly used as gaskets, seals, wire harnesses and sensor components.
• Medical Industry: PI has applications in the medical field, especially in implantable medical devices. It is used for components such as catheters.
• Optical Industry: Because of its excellent transparency, PI is widely used in lenses, waveguides, displays and other optical components.

Our Products

Alfa Chemistry provides customers with PI in different material forms. The specific products are as follows:

PI Films

PI Tubes

PI Powders