It is possible to bend acrylic glass, taking into account certain properties of the material. What is still necessary and must be considered if you want to reshape acrylic glass, is vividly explained along with step by step instructions in the following article.
Acrylic Glass Properties
Acrylic glass is better known as Plexiglas, but is often referred to as PMAA in the technical field. Acrylic glass is like Makrolon a thermoplastic.
Deformation without heat, as with Makrolon but is not possible with acrylic glass. In the case of acrylic glass, at least 100 ° C must be applied to the surface to be formed. On cooling below 50-60 ° C the material solidifies again and then retains the formed structure.
Further decisive properties for forming
- High thermal conductivity of the material
- High specific heat capacity
- High elasticity
Important when heating
The high thermal conductivity of Plexiglas means that it has to be heated very carefully. The heating must act as evenly as possible. Acryl Under no circumstances should acrylic glass come in direct contact with the heaters used, as it is flammable. Due to the high thermal conductivity, from a layer thickness of around 4 mm, the heat must act on both sides of the workpiece in order to achieve good formability.
On the one hand, hot air devices or heating rods that heat the bending edge on the material are suitable for heating. It must always be paid to a sufficient distance.
Alternatively, the entire workpiece in the oven or, if present, in a curing oven for plastics can be brought to a temperature of more than 100 ° C.
Important when clamping
You can simply edge Plexiglas between two squared timbers. For bending a corresponding die is necessary, which can either produce itself with matching outside diameter, or can buy finished in inches. Converting the centimeter measurements can sometimes cause problems, because commercially available matrices do not fit exactly.
Bend or bend the acrylic itself - this is how it works
Acrylic glass (Plexiglas)
- Clamping device
- Bending device or tilting device, if necessary die
- 1. Prepare workpiece
First mark the bending edge on the workpiece. This should be done on both sides.
Afterwards, either the entire workpiece can be heated in the oven or in a hardening oven. In any case, temperatures of more than 100 ° C should be reached. After that, the forming can take place directly. Erwär 2. Heating the bending edge
The bending edge can be heated with heating rods or hot air devices. Care must be taken to ensure a sufficient distance between the workpiece and the heater. 25 to 30 cm are definitely recommended.
For layer thicknesses over 4 mm, heat the bending edge from both sides.
It can easily be folded over a square timber - if necessary between two square timbers. For the forming or bending a die is necessary.