Chemical Recycling of Vacuum-Infused Thermoplastic Acrylate-Based Composites Reinforced by Basalt Fabrics

Polymers

Amel Sahki¹  Anne Bergeret¹  Didier Perrin¹  Clément Lacoste¹  Inès Meyer zu Reckendorf¹  Avigaël Ohayon²  Karynn Morand² 

[1] Polymers Composites and Hybrids (PCH), IMT Mines Alès, 30100 Alès, France;SEGULA Technologies, 69200 Vénissieux, France;

关键词: recycling;    thermoplastic composites;    basalt fibers;    ultrasound;    mechanical properties;   

DOI  :  10.3390/polym14061083

来源: DOAJ

【 摘 要 】

The objective of this work was to compare the material recovered from different chemical recycling methodologies for thermoplastic acrylate-based composites reinforced by basalt fabrics and manufactured by vacuum infusion. Recycling was done via chemical dissolution with a preselected adapted solvent. The main goal of the study was to recover undamaged basalt fabrics in order to reuse them as reinforcements for “second-generation” composites. Two protocols were compared. The first one is based on an ultrasound technique, the second one on mechanical stirring. Dissolution kinetics as well as residual resin percentages were evaluated. Several parameters such as dissolution duration, dissolution temperature, and solvent/composite ratio were also studied. Recycled fabrics were characterized through SEM observations. Mechanical and thermomechanical properties of second-generation composites were determined and compared to those of virgin composites (called “first-generation” composites). The results show that the dissolution protocol using a mechanical stirring is more adapted to recover undamaged fabrics with no residual resin on their surface. Moreover, corresponding second-generation composites display equivalent mechanical properties than first generation ones.

【 授权许可】

Unknown