Polyphthalamide (PPA)
Description (definition)
Polyphthalamide (PPA) is a high-performance polyamide characterized by its exceptional heat resistance, chemical resistance and low moisture absorption. It belongs to the group of semi-crystalline aromatic polyamides and is preferred for applications where traditional polyamides such as PA6 or PA66 reach their limits. PPA offers high dimensional stability and mechanical strength, even under demanding conditions.
An example
One example of the use of PPA is in heavy-duty technical components such as precision gears or pump housings. Its low moisture absorption ensures that it functions reliably even in humid or chemical environments.
What advantages does PPA have over conventional polyamides?
PPA offers better thermal stability and chemical resistance than PA6 or PA66. It remains dimensionally stable even at high temperatures and in aggressive environments such as in contact with fuels or acids. It also absorbs significantly less moisture, which keeps its mechanical properties stable.
How is PPA used in the industry?
PPA is often used in the manufacture of components for technical machinery, pumps and valves. Its strength and resistance to chemicals make it ideal for use in production environments and high-temperature applications.
Is PPA suitable for sustainable applications?
Yes, PPA can be recycled and is often used in long-life applications that require less frequent replacement. In addition, PPA can be made from bio-based materials, which further increases its environmental friendliness.