Technical Information

What is POLYAMIDE?

One of the first engineering thermoplastics, PA, Polyamide also known as Nylon, has been available for more than 50 years. A polyamide is a macromolecule with repeating units linked by amide bonds.

Polyamides occur both naturally and artificially. Examples of naturally occurring polyamides are proteins, such as wool and silk. Artificially made polyamides can be made through step-growth polymerization or solid-phase synthesis yielding materials such as nylons, aramids, and sodium poly(aspartate). Synthetic polyamides are commonly used in textiles, automotive applications, carpets and sportswear due to their high durability and strength.

Generally speaking, PA Nylon is a semi crystalline thermoplastic with low density and high thermal stability.

There are often numbers associated with nylon plastics types such as 6, 66, 12 and 46. These numbers relate to the molecular structure of the nylon polymer and each structure type will have different properties. The most common polyamide plastics are Nylon 6 extruded, cast PA 6 and PA6,6.

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Characteristics of POLYAMIDES

Polyamides are among the most important and useful technical thermoplastics due to their outstanding wear resistance, good coefficient of friction, and very good temperature and impact properties. In addition, nylon polyamide exhibits very good chemical resistance and is an especially oil resistant plastic. This excellent balance of properties makes the PA polymer an ideal material for metal replacement in applications, such as automotive parts, industrial valves, railway tie insulators and other industry uses, whose design requirements include high strength, toughness and weight reduction.

The multi-functional application of nylon is due to its extensive combination of properties -

  • Toughness at high and low temperatures
  • Abrasion and wear resistance
  • Chemical resistance to may oils, organic solvents, and gasoline impact and fatigue resistance
  • Impact and fatigue resistance
  • Stiffness and retention of properties at elevated temperatures
  • Excellent tensile strength
  • Outstanding weather-ability
  • Exceptional heat resistance
  • Excellent flow properties
  • Good impact properties

Benefits of POLYAMIDE PROFILES

Polyamides come in a variety of types, each having its own unique combination of properties. These properties can be enhanced by the use of additives such as glass fiber, mineral fillers, flame retardants, toughening agents, and other chemicals. KASTRADE offers Polyamide 6 and Polyamide 6,6 for Extrusion Profiles in a wide variety of Grades.

These Polyamide Profiles retain their properties, characteristics and dimensions in operating temperatures upto 2300 C (1 hr.). During Aluminium coloring process, undertaking that conditions are correct, Polyamide Profile's dimensions and the mechanical properties remain stable. Additionally, the presence of Carbon Black in raw material Polyamide, Profiles are UV resistant.

PA-6,6 25% glass reinforced and Aluminium have approximately the same coefficient of linear thermal expansion, their dimensions change the same way with the temperature changes.

PRODUCT DATA SHEET FOR POLYAMIDE 6,6GF25

Material Characteristics, Test Standards and Results of a typical Polyamide Extrusion

S. No. Characteristics Tested Standard Followed Result as per standard Actual Results
1. Hardness
(Shore D)
EN ISO 868 820 (+/-40) 800
2. Tensile Strength
(N/Mtr2)
EN ISO 527 -2 > 80* 85
3. Elongation at Break
(%age)
EN ISO 527 -2 > 3 4.5
4. Impact Strength
(KJ/Mtr2)
EN ISO 179 -1 > 30 34
5. Young’s Modulus
(N/Mtr2)
EN ISO 527 -2 > 4500 4900
6. Specific Gravity
(g/cm3)
EN ISO 1183-1 1.30 1.22
7. Melting Temperature
(0)C
EN ISO 11357-3 30 28
8. Annealing Residue
(Glass Fibre Content)
(%age)
EN ISO 1172 25 (+/-2.5) 25
  • Polyamide Profiles retain their properties, characteristics and dimensions in operating temperatures upto 2300 C (1 hr.).
  • During Aluminium coloring process, undertaking that conditions are correct, Polyamide Profile's dimensions and the mechanical properties remain stable.
  • The presence of Carbon Black in raw material Polyamide, Profiles are UV resistant.
  • PA-6,6 25% glass reinforced and Aluminium have approximately the same coefficient of linear thermal expansion, their dimensions change the same way with the temperature changes.
  • * - This value is suitable for “I”shaped Polyamide Strips. Actual values could differ based upon the Profile shape & has to be discussed.
  • Unless otherwise specified, all data listed is for natural or black colored materials. Pigments can affect properties.

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