Recyclable thermoplastic resin for filament winding

Filament winding is a process for manufacturing composite revolution parts by winding a fibre impregnated with a liquid resin on a support mandrel or a liner. Parts such as pipes, tanks or storage containers made by this process offer high performance gains; they are light, strong and high quality. 

The use of liquid, thermoset type resin provides performance and high chemical resistance but requires long polymerisation times. 
For certain types of thermoset resins such as epoxy resin, temperature-controlled and homogeneous post-curing by rotation of the parts is necessary, making their industrialization complex and expensive.  

In today's industrial world, the subject of the end-of-life cycle must always be considered. However, these thermoset resins are not recyclable and therefore put many limitations on end-of-life treatments.

We have developed a liquid reactive thermoplastic resin specifically for filament winding, which simplifies and optimizes the process.  
This resin has advantages at different stages of the composite’s life cycle:  
 
Process 
The resin is liquid and is handled at room temperature, simplifying the process. Once the impregnated fibre winding is finished, the post-curing time is very short compared to thermosetting technologies.  

Properties 
This resin is non-toxic (without Styrene, BPA, Cobalt salt or Primary amines). It results in a material that is impact resistant and presents high strength, but also has very good resistance to corrosion and UV, which extends product service lifespan.  

End of life 
Finally, this resin is recyclable. Due to its thermoplastic nature, it is possible to recover the resin and/or composites for: 
- conventional mechanical recycling
- chemical recycling to recover the basic monomer in order to form a new identical resin