MATERIALS | WIRE & CABLE


The study compared a typical crack resistant


sheathing compound against two alternatives where 1.5 % of the coupling agent was replaced by the Innospec waxes. The formulation containing Viscospeed HP proved to have the best flow and displayed acceptable mechanical properties. However, the semi-crystalline nature of the polar Viscowax 1440 resulted in a negative impact in the crack test at 50°C.


Bornschein says the formulation containing


Viscowax 1440 also showed a positive impact on flow of the final compound formulation together with an improvement in tear strength. Oven tests show that the wax improves processability without negatively affecting crucial crack resistance.


According to the researchers, the ability to use a


Shielding innovations Turning to shielding solutions, Manel Miret, Area Manager and New Product Developer at master- batch maker Delta Tecnic, and Bruno Reis Figue- iredo, Co-CEO at graphene specialist Graphenest, detailed work the two companies have undertaken to evaluate the use of graphene-loaded com- pounds to replace metal meshes, wires and braids as shielding elements in cables.


polymer-based shielding layer would simplify manufacturing, increase production speed and result in a lighter and more flexible cable (impor- tant in mobility applications). Metals are also not very effective shielding options at GHz frequencies, they add, while conductive polymers have been shown to be effective at these frequencies (which will be used for 6G mobile networks). The study has shown that graphene-loaded


Above: Innospec


claims its wax additives can help reduce sheath cracking risk


IMAGE: INNOSPEC


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