Mixing of PMMA & AIBN in reactor & Ensure absence of air bubbles in vacuum tank.
Frame spacer is placed between 2 polished glasses to form a mould cavity. The glasses are secured by clamping system.
Liquid acrylic (PMMA) is injected in the mold cavity
Polymerisation in pool at temperature range of 57-61°C for time average of 3.30 hours
Our acrylic sheets are made from virgin MMA (Methyl Methacrylate Monomer), ensuring the highest quality product to be produced with excellent clarity, weathering resistance and high strength.
Annealing in oven slowly heating & cooling plastics below its glass transition temperature / softening point.
Separation of the completed acrylic sheets from mold.
Masking sheet used as protector, being cut into various sizes.
Storage of finished acrylic sheets.
Ready for delivery (exportation) according to customers’ order.
Standard Sizes in Width and Length
| Specific Gravity | 1.19 |
| Rock Well Hardness | M100 |
| Water Absorption (24hrs.) | 0.3% |
| Compressive: Yield | 1260 kg/cm2 |
| Modulus of Elasticity | 3 x 104 kg/cm2 |
| Tensile: Rupture | 560kg/cm2 & up |
| Elongation | 3 - 7% |
| Flexural: Strength | 1050 kg/cm2 |
| Shear Strength | 630 kg/cm2 |
| Impact Strength: (200 gr. steel ball) | 0.4 m |
| Refractive Index | 1.49 |
| Light Transmittance | 91% & up |
| Heat Distortion Temp. | 85oC |
| Coefficient of Thermal Conductivity | 4-6x10-4cal/sec/cm2/oC/cm |
| Coefficient of Thermal Linear Expansion | 7x10-5cm2/cm/oC |
| Max. Recommended Continuous Service Temp. | 85oC |
| Hot Forming Temp. | 140-160oC |
| Specific Heat | 0.35cal/gr.oC |
| Dielectric Strength | 20kv/mm |
| Volume Resistivity | >1015ohm-cm |
| Sulfuric acid | 30% | 0 | 70% X | |
| Hydrochloric acid | 10% | 0 | 36% X | |
| Nitric acid | 10% | 0 | 100% X | |
| Acetic acid | 10% (of) | 0 | 30% (of) 0 | 98% X |
| Hydrofluoric acid (conc.) | △ | |||
| Sodium Hydroxide | 0 | |||
| Ammonia Water | 10% | 0 | 28% 0 |
Unattached at normal temperature:
Hexane, Octane, Formaline 40%, Glycol, Methyl Alcohol, Ethyl Alcohol.
Insoluble but swelled or crazing:
Butyl Alcohol, Isopropyl Alcohol, Carbontetrachloride.
Soluble at normal temperature:
Acetone, Benzene, Toluene, Xylene, Ethylenedichloride, Chloroform, Ethylacetate.
UB Arcylic is transparent, but it can be tinted in various attractive colours to meet any specified requirement. More than 50 colours are currently available, including transparent, translucent, and opaque.
Standard sheet thickness run from 2 mm to 30 mm.
| Thickness (m/m) | Tolerance(m/m) |
|---|---|
| 2.0 | ± 0.3 |
| 2.3 | ± 0.3 |
| 2.5 | ± 0.3 |
| 2.8 | ± 0.3 |
| 3.0 | ± 0.4 |
| 3.8 | ± 0.4 |
| 4.8 | ± 0.5 |
| 5.0 | ± 0.5 |
| 5.8 | ± 0.6 |
| 6.0 | ± 0.6 |
| 7.8 | ± 0.8 |
| 8.0 | ± 0.8 |
| 9.8 | ± 1.0 |
| 10.0 | ± 1.0 |
| 12.0 | ± 1.0 |
| 15.0 | ± 1.2 |
| 18.0 | ± 1.3 |
| 20.0 | ± 1.5 |
| 25.0 | ± 1.5 |
