| 摘要 |
A production system for fibre reinforced composite products with cores comprises making the core 2 and the fibre reinforced skin 1 simultaneously by resin injection. A mould has the fibre reinforced skin 5 and 6 laid into the top and bottom halves 3 and 4 of the mould, which is then clamped shut. A mix of resin and filler particles (9 figure 6) comprising the core is pumped into the closed mould, forcing the reinforcement against the mould walls at which point the injection pressure increases and surplus resin within the mix is squeezed into the fibre reinforcement. A vacuum may be used to assist the resin in impregnating the reinforcement. The core density may be adjusted by means of careful placement of the vacuum ports and inlet sprues (8 figure 4). Alternatively the core may be made lighter by using pieces of foam in the core after placement of the reinforcement. The composite products may be turbine blades, aircraft propellers, yacht rudders or dagger boards. Later embodiments relate to a production system wherein a fibre pack and a core of filler particles are injected with resin simultaneously, a production system for making syntactic foam and a production system for fibre reinforced products with cores where a styrene or other resin constituent has its boiling controlled. |
