| 摘要 |
To treat heterogenous structures such as FRP moulded products, such as boat hulls, where the structure of the FRP laminate has been damaged, eg by water penetration, a layer of impermeable sheet material is first secured to a surface of the product to be treated to enclose a space between the surface and the layer. The contents of the space are continuously evacuated, for example by a vacuum pump, and then heating is applied within the space. A spacer is provided within the space to hold the sheet material away from the surface when vacuum is applied. After the treatment is competed, the heater is switched off and the vacuum released, the sheet is removed by peeling it away from the surface. The sheet can then be reused. The combination of the heat and vacuum it is claimed is sufficient to stabilise the deteriorating structure and allow restoration to its original condition.
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