Recycle glass fibre

Moreover, Zhang and co-workers [69] improved the mechanical properties of recycled glass fibre reinforced flame retardant PBT with three types of nanoparticles including SiOi, OMMT and mica. A strong adhesion, which acts as an effective bridge to pass the stress to the nanoparticles, was provided in these nanocomposites. The addition of OMMT caused a reduction of impact strength, due to a reduction in chain mobility. In addition, the heat distortion temperature increased upon the addition of SiOi and mica. Furthermore, the nanoparticles did not significantly affect the electrical and flame retardant properties. 

A pyrolysis technique was investigated as a method for the chemical recycling of glass fibre-reinforced unsaturated polyester SMC composites. The proeess yielded liquid products and gases and also a solid residue formed in the pyrolysis of glass fibres and fillers. The solid residue was used as a reinforeement/filler in unsaturated polyester BMC composites, and the influenee on mechanical properties was studied in comparison with BMC prepared entirely from virgin materials. 

Polymer Recycling l,No.2, 1995,p.87-97 RECYCLING GLASS-REINFORCED COMPOSITES. THE VALUE OF GLASS FIBRES... 

Recycling of glass fibre-reinforced plastics is reviewed, with special emphasis on remelting of thermoplastic composites, mechanical recycling of thermoset composites, depolymerisation and dissolution of thermosets and thermoplastics, closed loop recycling of glass, and the use of glass as a mechanical compatibiliser. 32 refs. 

For a high-performance glass fibre reinforced thermoplastic such as PEEK, the retention of modulus and strength after two and four recycling cycles are in the ranges of 79-87% and 76-84%, respectively. 

Results are presented of experiments undertaken by Gaiker in the manufacture of sandwich panels containing foam cores based on PETP recycled by a solid state polyaddition process developed by M G Ricerche. Panels were produced with glass fibre-reinforced unsaturated polyester and epoxy resin skins, and allthermoplastic panels with PE, PP, PS and glass fibre-reinforced PETP skins were also produced. EVA hot melt adhesives and thermoset adhesives were evaluated in bonding glass fibre-reinforced PETP skins to the foam cores. Data are presented for the mechanical properties of the structures studied. 

A phase separation technique, using solvent and subsequent swelling, has been described to separate PVC from polyester fabric, primarily to recycle the fabric (340,355). A technique for recycling PVC coated glass fibre fabric has been described, based on compression or injection moulding, with addition of an acid absorber (hydrotalcite) (49). 

A. M. CunUffe and P. T. Williams, Characterisation of products from the recycling of glass fibre reinforced polyester waste by pyrolysis. Fuel, 82, 2223-2230, (2003). J. H. Harker and J. R. Backhurst, Fuel and Energy, Academic Press London, 1981. A. C. Albertson and S. Karlsson, Polyethylene degradation products, In Agricultural and Synthetic Polymers, ACS Symposium Series 433, J. E. Glass and G. Swift (eds), American Chemical Society, Washington DC, 60-64, 1990. 

Fibre-reinforced thermoplastics, such as glass fibre-reinforced nylon, are increasingly used as substitute for wood, metallic or ceramic materials in applications for which high strength and temperature are not decisive parameters. They are being incorporated into components in the automotive, naval, sport and leisure industries due to the potential of reduced production costs of lighter parts and recycling possibilities. 

P. A. Eriksson, Mechanical Recycling of Glass Fibre Reinforced Polyamide 66, Departement of Polymer Technology, Royal Institute of Technology, Stockholm, Sweden (1997). 

As an example of the complexity of organisational issues associated with Life Cycle Engineering, Figure 6.1 shows the possible stakeholders in a recycling scheme of an automotive under-the-bonnet application, in this case a radiator end-cap made from a reinforced polymer, short glass fibre-reinforced polyamide 66 (PA 66 + GF). 

Recycling has a dramatic influence on the mechanical and thermal properties of unstabilised polyamide 66. However, glass fibre reinforced polyamide 66 may be recycled up to four times without any significant deterioration in the performance of the material. Proper amounts and combinations of processing additives and antioxidants, together with optimised processing parameters, make it possible to recycle polyamides without significant losses of mechanical properties. 

Corbiere-NicoUier T, GfeUer Laban B, Lundquist L, Leterrier Y, Manson JAE, Jolhet O. Life cycle assessment of biofibres replacing glass fibres as reinforcement in plastics. Resour Conserv Recycl 2001 33 267-287. 

---