Spray Adhesive for Infusion and RTM (Polyester Compatible)

Advantage:

• Strong adhesion thanks to the gelcoat, protective coating, glass fibres, and fibreglass laminates;
• Compatibility with polyester, vinylester, and epoxy resins;
• Does not compromise the mechanical performance of laminates;
• Does not threaten or prevent the correct polymerisation of resins;
• Does not weaken the adhesion between the different layers of a laminate.
• Contains a blue dye that allows for assessing and regulating the amount applied; the colour disappears during polymerisation.

Application:

FX 51 must be sprayed by applying a uniform layer of adhesive on one or both surfaces to be bonded. The time required before PRO-FIX 51 develops its full adhesive strength depends on the ambient conditions (ambient temperature, humidity, air flow over the surface being treated) and the thickness applied, which varies from 30 seconds to a few minutes. High temperatures and good air circulation promote the evaporation of solvents and accelerate adhesive performance. Conversely, applying high thicknesses of material (indicated by an intense blue colour), which may be necessary with heavy fabrics or very porous materials, slows the process.

After this, the fabric (or core material) can be positioned, ensuring it adheres well to the surface, and the operation can be repeated for subsequent layers. The adhesive retains its repositionable characteristics for a few minutes after the application of the reinforcement: the duration of this period varies depending on the thickness of FX 51 applied, the temperature, and the ambient conditions in general.

For aerosol application, hold the spray about 20 to 30 cm from the surface and spray an even film of adhesive onto one or both surfaces to be bonded. The quantity of PRO-FIX 51 to be applied depends on the type of surface onto which it is sprayed and the weight of the material to be bonded. Smooth non-absorbent surfaces like gelcoat, protective coating, or fibreglass moulds require small quantities of adhesive, while porous surfaces (e.g. expanded PVC and PU) or highly absorbent surfaces (e.g. chopped strand mat) require the application of larger volumes to achieve the required adhesion.

With the fibreglass materials most commonly used in the infusion process (bi-axial, combi, etc.), the average yield can be calculated at around 60 to 100 m² with 1 kg of PRO-FIX 51 applied using an airbrush or similar system. An aerosol container is sufficient for treating an average area of 15 to 25 m².