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GEHR PMMA XT® (ACRYL)

1 of 1 products in this brand
GEHR PMMA XT® (ACRYL) is amorphous material belongs to the polymer group of standard plastics, due to its thermal and mechanical properties. In addition to its high mechanical strength and rigidity, it certainly has an extraordinarily brilliant transparency. Its weather and UV resistance as well as its surface hardness are also very high. PMMA is also scratch-resistant and polishable. The continuous operating temperature ranges between -40 °C and +70 °C. The chemical resistance to most solvents, the resistance to stress cracking as well as the toughness is clearly subordinate compared to other materials from the group of standard polymers.

Polymer Name: Polymethyl Methacrylate (PMMA)

Physical Form: Bars, Custom, Rods, Tube

Features: Amorphous, Chemical Resistant, Easy To Paint, Excellent Mechanical Strength, Excellent Surface Hardness, Excellent Transparency Properties, Good Mechanical Properties, Good Scratch Resistance, Good Thermal Stability, Good UV Resistance, Good Weather Stability, High Hardness, High Rigidity, High Temperature Insulation Properties, Low Water Absorption

Density: 1150.0 - 1200.0 kg/m³

Color: Transparent

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Technologies

Features & Benefits

Properties
  • Very high mechanical strength and hardness
  • High mechanical rigidity
  • Excellent transparency
  • Easy to polish
  • Good thermal stability
  • Good insulation properties
  • Low water absorption
  • Excellent weather resistance
  • Possible stress problems
  • Low chemical resistance
  • Brittle

Applications & Uses

Plastics & Elastomers Processing Methods
Applications
  • Display
  • Signage
  • Viscom/ Advertisement/ Displays
  • Food industry
  • Automotive
  • Milk pipes
  • Hand rails
  • Pipes for wineries or storage containers
  • Pump bodies, flanges and sight glasses
  • General industrial applications (reactors, scrubbers, filtration systems, lamps, audio, furniture)

Properties

Flame Rating
Form and Condition
Rods. Profiles. Tubes / Solid
Odor
Odorless
Insoluble in
Water
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Strength at Yield72MPaISO 527
Elongation at Break (R)8%ISO 527
Impact Strength (an)20kJ/m2ISO 179
Hardness90Shore DISO 868
Modulus of elasticity (Et)3215MPaISO 527
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.19ISO 1183
Water Absorption2.1%ISO 62
Humidity Absorption0.4%ISO 62
Maximum Permissible Service Temperature70°CUL746B
Thermal Properties
ValueUnitsTest Method / Conditions
Vicat Softening Point (VST/B/50)103°CISO 306
Heat Deflection Temperature (HDT/B)100°CISO 75
Heat Deflection Temperature (HDT/A)95°CISO 75
Coefficient of Linear Thermal Expansion0.8K-1.10-4ISO 11359
Thermal Conductivity (20°C)0.19W/(m.K)ISO 22007-4
Glass Transition Temperature (Tg)106°CISO 3146
Melting Temperature (Tm)106°CISO 3146
Typical Properties
ValueUnitsTest Method / Conditions
Density1.15 - 1.2g/cm³
Melting Temperature (ca)130°C
Thermal Decompositionmin. 300°C
Ignition Temperaturemin. 390°C
Electrical Properties
ValueUnitsTest Method / Conditions
Volume Resistivitymin. 10^13Ω.cmIEC 60093
Surface Resistivity (Ro)min. 10^13ΩIEC 60093
Dielectric Constant (1MHz)2.8-IEC 60250
Dielectric Loss Factor (1 MHz)0.03-IEC 60250
Dielectric Strength30kV/mmIEC 60243-1
Tracking ResistanceCTI 600VIEC 60112
Additional Information
ValueUnitsTest Method / Conditions
BondabilityYes--
Physiological Indifference (FDA)Yes-
FlammabilityHB-UL 94
Limiting Oxygen Index (LOI, 9)17%ASTM D2863
UV Stabilisation (6, 9)Yes--

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Fire-fighting Measures

Suitable extinguishing agents

Water, foam, dry chemical, carbon dioxide (CO2).

Potential combustion products

Carbon dioxide (CO2), carbon monoxide (CO). marks of hydrogen cyanide. Formation of further decomposition and oxidation products depend upon the fire conditions. Under special fire conditions traces of other toxic substances are possible.

Special protective equipment

Wear a self-contained breathing apparatus.

Further information

Dispose of fire debris and contaminated extinguishing water in accordance with official regulations..

Safety & Health

Safety Measures

The general industrial safety measures should be considered. A thermal damage during machining should be avoided.

Storage & Handling

Machining

The product can be machined with standard machinery and tools. Before machining the product should be stored at room temperature 24 h. Evacuate swarf to prevent slipping or tripping. Observe the maximum allowable concentration of dust levels on the working area which apply in your country. Wear safety goggles during machining.

Storage

The products shall be stored indoor to keep away from ionizing radiation, chemicals, …