The term nylon refers to POLYAMIDE, the raw material used to manufacture SapiSelco products. Nylon is a common term, often misused when referring to thermoplastic materials, with the main characteristic of elasticity, i.e. the ability to deform under stress and return to its original form when the force is no longer applied. Nylon is obtained by polymerising adipic acid and hexamethylenediamine in autoclave at pressures exceeding 15 atm at a temperature of 280° C for approximately 6 hours. The polymer obtained comprises 140-350 monomers with the following formula: (NH – (CH2) 6 – NH – CO – (CH2) 4 – CO). The melting point of the polymer is between 250° C and 255° C. Density is 1.14. It offers optimal dielectric properties with low flame propagation speed: for this reason it is ideal for a wide range of applications in the electro-technical sector.
Before use, each batch of raw materials must pass a number of tests that are part of the “raw materials acceptance procedure”. Therefore the procedure envisages an initial test, “determining the quantity of water content in the granule” (test 1), followed by the test “determining relative viscosity of the granule” (test 2).