What are the properties of polyimide?
Polyimides exhibit an exceptional combination of thermal stability (>500 °C), mechanical toughness, and chemical resistance. They have excellent dielectric properties. The linearity and stiffness of the cyclic backbone allow for molecular ordering.
Is polyimide water soluble?
PAD100 is completely soluble in pure water. We investigated the imidization behavior of PAD in aqueous solution using various spectroscopic methods, which revealed that PAD100 has faster imidization kinetics relative to that of the poly(amic acid)-type precursors.
Is Teflon a polyimide?
The only known chemicals that affect the carbon-fluorine bonds in Teflon™ films are some alkali metals and most reactive fluorinating agents. Teflon™ film has one of the widest temperature operating ranges of all thermoplastics—making it a natural fit in high- and low-temperature applications.
What kind of properties does a polyimide have?
Polyimides exhibit an exceptional combination of thermal stability (>500°C), mechanical toughness, and chemical resistance. They have excellent dielectric properties and inherently low coefficient of thermal expansion. They are formed from diamines and dianhydrides such as those shown in Figure 6.22. Figure 6.22.
How are polyimides used in high temperature engineering?
Polyimides are high temperature engineering polymers originally developed by the DuPont Company. Polyimides exhibit an exceptional combination of thermal stability (>500°C), mechanical toughness, and chemical resistance. They have excellent dielectric properties and inherently low coefficient of thermal expansion.
What are the benefits of polyimide thermoset plastic?
Polyimide thermoset plastic provides excellent mechanical, thermal, electrical, and chemical-resistant properties. Polyimide brings the following benefits to medical tubing: flexibility, high tensile strength, biocompatibility, low friction, transparency, tight tolerances, thin walls, smooth surface, pushability, and column strength.
Who are the manufacturers of Polyamideimide resins?
COMMERCIAL Polyamideimides Polyamideimide (PEI) was first developed and marketed by Amoco to improve the processability of imides by introducing amide bonds. Today, these resins are manufactured by Toyobo, Quadrant (Mitsubishi) and Solvay under the trade names Vylomax, Duratron, and Torlon.