INTENSIL™ 40 Heat-Cure Silicone Intensifier Compound

INTENSIL™ 40 is a soft, pliable, uncured 40 Shore-A silicone compound developed for use as a silicone intensifier in prepreg production. Typically, the compound is used to create close-fitting silicone inserts which ensure maximum pressure is applied to the laminate in hard-to-bag corners and details, reducing the risk of bag bridging and speeding up the laminating process. In captive mould geometries, the high CTE of INTENSIL can also create significant consolidation pressure on the laminate.

Silicone intensifier compound can also be used to reduce the risk of burst bags by using it to create caps for sharp features like bolts or clamping bushes, or plugs for holes or deep recesses.

The 40 Shore-A hardness provides the ideal balance between conformability and firmness, making it easy to accurately shape and smooth when forming the intensifier piece, as well as easily remove and refit during repeated use.

INTENSIL 40 is supplied in high-visibility yellow.

Features

• Highly conformable 40 Shore-A hardness
• High thermal expansion (CTE)
• High tear-strength
• Service temperature up to 210°C
• Variable cure from 100°C
• 6 month out-life

How to Use

Moulding & Shaping

When used for the first time, intensifiers are typically co-cured under vacuum bag pressure in an oven or autoclave, alongside the uncured prepreg laminate.

INTENSIL 40 should be separated from the uncured laminate (or the mould) using an unperforated release film, such as R210. In its uncured state it is soft and pliable and is easily applied and shaped by hand, or using shaping tools, to fill cavities and corners, or domed over details such as bolts or clamping bushes.

Curing

INTENSIL 40 is supplied as an uncured silicone compound and requires heat to cure. Typically, the compound is co-cured alongside the prepreg on first use, following the normal cure-cycle for the prepreg.

Continued Use

Once cured, intensifiers made with INTENSIL 40 are reusable indefinitely. The intensifier should always be separated from the prepreg laminate using release film.

Further Information

Safety

Wear gloves when handling the uncured silicone. Always read and follow the accompanying safety and technical datasheets before use.

Storage

INTENSIL 40 has a shelf-life of 6 months at room temperature (20°C) and 2 years when stored frozen. Avoid storage conditions above 20°C as this will shorten the shelf-life of the compound.

How to Buy

INTENSIL 40 is available to buy in 1kg and 5kg packs. Choose the required pack size from the options at the top of the page.

Specification