Novel polymeric alloy

Novel polymeric alloy
Type Nano-composite polymeric alloy
Main ingredient Polyolefin
Additional ingredients Polyamides, compatibilizers, anti-toxidants, colorants
Density p 0.96 g/cm3
Tensile strength(σt) 19–32 MPa
Elastic limit/Yield 12%
Glass temperature 70°C
Melting point >200 °C
Linear expansion coefficient (α) 80 ppm°C
Source[1]

Novel polymeric alloy (NPA) is a polymeric alloy composed of polyolefin and thermoplastic engineering polymer with enhanced engineering properties. NPA was developed for use in geosynthetics. One of the first commercial NPA applications was in the manufacturer of polymeric strips used to form Neoloy® cellular confinement systems (geocells).

Novel polymeric alloy was developed as an alternative to high-density polyethylene (HDPE) in geosynthetics. Although HDPE is widely used due to its low cost, ease of manufacturing and flexibility, its relatively high creep, low tensile strength and sensitivity to elevated temperatures limit its use, for example, in long-term, critical geocell applications.[2]

Used in the manufacture of geosynthetics, such as cellular confinement system, novel polymeric alloy provides higher tensile strength and stiffness, and is more durable over dynamic loading and under elevated temperatures than those made from HDPE (Han, 2011).[3] The lifespan of NPA based geosynthetics, such as geocells, makes them suitable for long-term design in infrastructure, such as highways, railways, container yards and high retaining walls.

  1. ^ Halahmi, I., Erez, O., Erez, A., (2009, 2010), High Performance Geosynthetic Article , US Patents 7,674,516 B2, 7,541,084 B2
  2. ^ Leshchinsky, D. (2009) “Research and Innovation: Seismic Performance of Various Geocell Earth-retention Systems,” Geosysnthetics, No. 27, No. 4, 46-52
  3. ^ Han, J., Pokharel, S. K., Yang, X. and Thakur, J. (2011). “Unpaved Roads: Tough Cell – Geosynthetic Reinforcement Shows Strong Promise.” Roads and Bridges. July, 49 (7), 40-43