What is the Difference Between PA6 and PA66?

The main differences between PA6 and PA66, two popular engineering thermoplastics, are as follows:

1. Temperature Resistance: PA66 has slightly higher temperature resistance compared to PA6.
2. Ductility: PA66 is slightly less ductile than PA6.
3. Moisture Absorption: PA66 has a slightly lower moisture absorption capacity than PA6.
4. Modulus: PA66 has a higher modulus than PA6.
5. Wear Resistance: PA66 offers better wear resistance than PA6.
6. Short-term Heat Resistance: PA66 has better short-term heat resistance than PA6.

Both PA6 and PA66 have similar chemical and physical properties, but these slight differences lead to variations in their applications and processing requirements. Mixing PA6 and PA66 for recycling purposes may result in a material with compromised properties. They are used in various markets and applications, including automotive, transportation, electrical and electronics, and consumer products.

Comparative Table: PA6 vs PA66

The main differences between PA6 and PA66 polyamides are their chemical structure, properties, and applications. Here is a comparison table highlighting the key differences:

Both PA6 and PA66 have similar chemical and physical properties, but their differences in structure lead to variations in their properties and applications. PA6 has better impact resistance and solubility resistance, while PA66 has better rigidity and strength. Additionally, PA6 absorbs water faster than PA66, which can affect its performance in certain applications.