New plastic developed in France Rugged and remodelable

This new type of material developed by the Centre National de la Recherche scientifique (CNRS) research team can be freely shaped at high temperatures and can be repaired as well as recycled. After many times of high temperature treatment, even grinding and reshaping, it retains the mechanical properties of the raw materials.

Ludwik Leibler, the scientist who led the research at the center, said: “The material is a thermosetting organic resin that can be processed by techniques like blowing and forging metal and glass. Compared to metal and glass, this The materials are lightweight, easy to handle, and have a high degree of hardness and ductility."

The study pointed out that this material “can easily make complex shapes without having to rely on models” and that using industrial heat guns is sufficient to heat without the need for precise heating tools.

This material can be remodeled because when it is heated, it can undergo a reversible exchange reaction by transesterification, which temporarily breaks the intermolecular cross-links and changes the way the molecular structure is linked. But still maintain its integrity and prevent depolymerisation. These broken cross links can be reconnected on cooling.

Traditional synthetic polymers are divided into two categories, thermosetting and thermoplastic. Thermoset plastics have a permanent cross-linking of atoms and therefore have excellent mechanical properties and water resistance. However, thermosetting plastics, unlike thermoplastic plastics, can be remelted and shaped. Once processed, they cannot be reprocessed.

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