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LOTEK

LOTEK 7520 (Ethylene Acrylic AcidTerpolymer IONOMER)

Key features Recommended processing conditions and resin handling

IOTEK 7520 is a zinc ionomer, which offers :

- outstanding flexibility and softness.
- good adhesion to a broad range of substrates
- high compatibility

It is typically used in injection molding applications.It yields excellent results in the impact modification of engineering polymers and in blends with other ionomers.


Processing conditions:
IOTEK 7510 can be processed on equipment normally used for LDPE.
Melt temperature : 200 - 230 °C

 

Warning:

To minimize corrosion risk, all exposed metal surfaces in the extruder and die should be made from corrosion resistant metals or nickel/chrome plated. 

Iotek 7410 should be fed into the extruder after LDPE of a similar or higher melt index. Machines should always be completely purged with LDPE or a suitable cleaning compound before shutdown.

Cation containing polymers pick up moisture from the atmosphere if exposed for prolonged periods. It is therefore recommended to re-seal  tightly the package after each production run 

Typical values 
General properties Test Method(based on) Unit Typical Value
Melt index D 1238 g/10 min 2
Density D 1928 / 1505 g/cm 3 0.962
Melting point (DSC) D 3418 °C 67
Crystallization point (DSC) D 3418  °C 39
Vicat Softening Point D 1525 °C 40
Plaque properties Test Method(based on) Unit Typical Value
Tensile strength at break D 638 MPa 12
Yield strength D 638 MPa 4
Elongation at break D 638 % 680
1 % Secant Modulus D 638 MPa 22
Hardness Shore D D 2240  30
Abrasion resistance (weight loss) D 1242 mg 38
Flexural Modulus (3 mm) D 790 MPa 30
Rebound resilience DIN 53512 % 53