POLYAMIDES | ADDITIVES
need for versatile solutions across many applica- tions,” said Christian Battenberg, Clariant’s Global Business Development Manager Polymer Solutions. Clariant also provides Licocare RBW Vita additives for PA based on renewable rice bran wax, a non-food-competing by-product of rice bran oil production, which act as effective lubricants, dispersion agents, and nucleating agents, improv- ing flow by both internal and external lubrication. “Licocare RBW 300, 330, and 360 Vita, maximise the flow of polyamides giving a complete fill and faster injections without elevating temperatures,” said Emilie Meddah, Global Marketing Manager for Additives Polymer Solutions at Clariant. “Licocare RBW 330 and 360 Vita improves flow and nucleates polyamides, reducing the cooling time of cycles and minimising shrink and warp via faster harden- ing of parts.”
Restoring recyclate The recycling of plastics is attaining increased focus in light of global efforts to minimise the environmen- tal impact of their use. Polyamides such as PA 6 and PA 66 are widely used due to their excellent mechanical properties and thermal stability.
However, recycled PA often suffers from poor quality and processability. This is where Nexcircle R801, a chain extender developed by Swedish supplier and developer of heat-activated crosslinkers Nexam Chemical, comes into play as it is designed to enhance the viscosity and overall quality of recycled PA, improving critical properties and making them more suitable for high-performance applications. Nexcircle R801 is a reactive additive that helps
rebuild polymer chains which have been broken during the life cycle of the plastic, effectively restoring the material’s original properties. One of the primary benefits of using it is a significant increase in viscosity, which ensures that the material can be easily extruded. Chain extension not only results in increased viscosity, but also in enhanced mechanical properties of recycled PA, including tensile strength, impact resistance, and elongation at break, making the recycled material more durable and suitable for demanding applications. Recycled PA treated with Nexcircle also exhibits higher thermal stability, allowing for extended service life in applications that involve exposure to heat. In addition, enhanced processability and consistency provides lower production costs and
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