May be this group of thermoplastics can be the most known one. Appplcations of polyamide polymers are very important in engineering or daily life. In here, we give information about the properties and applications of polyamid group of polymers.
What Are The Polyamides?
If we take a look at the chemical structure of molecular structure of polyamides, these are have amide bondings in long chains of polymer structures. The most important and known polyamide materials is nylons. Nylons have two major group according to the C atom number inside their monomers; nylon6 and nylon 6-6. General properties of nylons are;
- Elastic behaviour which makes nylon prefferable polymer in most applications.
- Resistant to abrasive environments and self-lubrication characteristics.
- Nylons can retain its good mechanical properties up to 125C temperature, which is a very important property around other thermoplastic polymers.
General applications of nylons can be listed as;
- Production of fibers in carpets because of it elastic behaviour.
- Nylons are used in tire cords because of their elastic behavior and abrasion resistancy.
- Low friction required areas or applications such as bearings gears in machinery.
Aramids(aromatic polymers) are very important polymer group in polyamides. They are used as reinforced plastics which has commercial name of ‘Kevlar’. It shows mechanical strength as steels, but the weigth of these aramids is around 20% of steels.
Properties Of Nylon 6-6
Nylon 6-6 has a symbol that PA6-6 and production method of Nylon 6-6 is step polymerization. Glass transition temperature of Nylon6-6 is around 50C and melting temperature is around 260C. Nylon 6-6 has highly crystalline structure which gives its mechanical properties. Nylon6-6 has modulus of elasticity value of 700 MPa and tensile strength value of 70 MPa. Nylon6-6 has very good elastic behaviour that has 300% of elongation according to its original shape.
These are the general properties and applications of polyamides and nylons. Do not forget to leave your comments and questions about polyamides below. Your precious feedbacks are very important for us.