Transparency-Changing Acrylic - Turns opaque when heated

This acrylic plastic (PMMA) changes its transmittance of light and solar radiation as a function of temperature. The transparency changes gradually as the ambient temperature rises from 24°C to 31°C. The change in transparency is reversed completely when the acrylic cools down again.

Used for:

The acrylic is used as a self-regulating shading material. It is used in skylights, façade elements, canopies, bus shelters, and greenhouses.

Details:

The change in transparency has been shown in laboratory tests to work for at least 20 years. The active substance is delivered in a masterbatch that is added to acrylics before extrusion or moulding. Solid sheets, multi-walled sheets, and corrugated sheets are available.

Idea:

Produce transparency-changing sheets that homeowners can attach to window glass in rooms that get too warm in direct sunlight.

The sample:

You get a functional moulded sample as seen in the product photo. Put the sample in hot water and watch as the transparency changes.

All samples come with a laminated information card, which includes contact details for the supplier