Acrylic – PPMA

Acrylic – PPMA

Acrylic has many different names including Poly(methyl methacrylate) (PMMA). It is also known as acrylic or acrylic glass as well as by many different trade names such as Plexiglas, Acrylite, Lucite, and Perspex to name just a few. Acrylic engineering plastic is transparent, lightweight and shatterproof.

 

This type of engineered plastic is often used as an alternative or replacement to glass, as well as casting resin, a comment in inks and coatings, to name just a few.

 

Acrylic can refer to a group of man-made plastic materials containing one or more derivatives of acrylic acid. The most often used and manufactured is polymethyl methacrylate (PMMA), it is a tough, highly transparent material with excellent resistance to ultraviolet radiation and weathering.

 

It can be coloured, moulded, cut, drilled, and formed to meet the needs of the end user. All of these properties make it perfect for many applications including airplane windshields, skylights, automobile tail lights, and outdoor signs.

 

Cast Acrylic sheet – Stock Shapes

Mechanical propertiesparametervalueunitnorm
Modulus of elasticity (tensile test)2.800 – 3.200N/mm2ISO 527
Tensile strength67 – 75N/mm2ISO 527
Elongation at break4 – 6%ISO 527
Flexural strength120N/mm2ISO 178
Compression strength125N/mm2ISO 604
Impact strength12 -26kJ/m2ISO 179-1
Indentation hardness175N/mm2ISO 2039-1

 

Thermal propertiesparametervalueunitnorm
Heat Stability – Vicat B100-116°CISO 306
Forming Temperature160-180°C
Linear shrinkage after heating<2%
Thermal expansion (CLTE)0.08M/mm °CISO 11359-2
Specific heat1.46KJ/kg °C
Thermal conductivity0.19W/m °CDIN 52612

 

Electrical propertiesparametervalueunitnorm
Dielectric constant103 Hx3.4DIN 53 483
Specific volume resistance10r15*cmDIN IEC 167
Dissipation Factor50 Hx0.06DIN 53 483
Dielectric strength40DIN EN 60243-2

 

Other propertiesparametervalueunitnorm
Water absorption24h,(20°C)0.17%ISO 62
Light transmissionClear sheet92%DIN 5036

Cast Acrylic tube

 

Mechanical propertiesparametervalueunitnorm
Modulus of elasticity23˚C3300MPaD790
Tensile strength -40°C110MPaD638
20°C80
Elongation at break5.5%DIN 53455
Flexural Strength80x10x4 mm3115MPaD790
Compressive Yield Stress110MPa
Impact strength (Charpy)15kJ/m2DIN 53453
Notched impact strength (IZOD)1.6kJ/m2DIN 53453
Indentation hardness961/30175MPaDIN 53456

 

Thermal propertiesparametervalueunitnorm
Forming Temperature160 – 175°C
Ignition temperature425°CDIN 51794
Heat deflection temperature under load1.8MPa 0.45MPa105 113°C
Service temperatureMAX80°C
Thermal expansion (CLTE)0.7mm/m˚CDIN 53752
Specific heat1.47J/(g*K)
Thermal conductivity20°C0.19W/(K*m)DIN 52612

 

Electrical propertiesparametervalueunitnorm
Volume resistivity>10 r15. cmDIN VDE 0303
Dielectric strength1mm˜30kV/mmDIN VDE 0303

 

Other propertiesparametervalueunitnorm
Water absorption24h (20°C)41 mgDIN 53495
UV Transmissionno
Flammability>2mmB2DIN 4102

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