Knowde Enhanced TDS
Identification & Functionality
- Additives Included
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Applications
- Glazing
- Car window deflectors
- Containers and packaging
- Pool covers
- Bathroom fittings
- Caravan and garage door glazing
- DIY, displays and showcases
- Lamps and ceiling lights
Properties
- Physical Form
- Mechanical Properties
- Physical Properties
- Thermal Properties
- Optical Properties
- Sheet Properties
- Excellent transparency and high brightness
- Elevated rigidity and hardness
- Good, long-lasting, long-term performance
- Waterproof
- Good tolerance to heat variations
- High dimensional stability
- Easy handling
- Properties
- Dimensional stability to heat:
The upper temperature limit for NUDEC® SANuv sheet usage is 85°C. Higher temperatures can be withstood only briefly. This indication is only valid when the heating medium is air. Heat transmission is considerably higher is water and other liquids and deformation may appear at lower temperatures. Parts that are subjected to frequent, sharp temperature modifications may develop minute capillary cracking that become enlarged over time. In this respect, NUDEC® SANuv sheets are considerably more stable than those of other polymers.
- Cracking under pressure:
The appearance of cracking essentially depends on the joint action of a chemical agent, temperature, applied stress and the time during which these are applied. The acrylonitrile content in SAN copolymer has a positive action on resistance to cracking under stress.
- Aging:
The UV component of sunlight causes degradation to all plastics in general. This degradation depends on the exposure conditions, in other words, on the actual duration of exposure to sunlight, the sheet inclination to the sun's rays, temperature and humidity and on this same sunlight intensity (geographical coordinates). This degradation shows up as a progressive yellowing, a reduction in light transmission and loss of mechanical properties. The ultraviolet additives in NUDEC® SANuv sheets enhance its behavior to light and conserve its properties without any great changes during years of exposure to outside weather conditions. When used in exterior applications, the protective film must be removed immediately, since exposure to sunlight can cause permanent adhesion to the sheet.
| Value | Units | Test Method / Conditions | |
| Ball Pressure Hardness | 165.0 | MPa | ISO 2039 |
| Charpy Impact Strength Notched | 1.28 | kJ/m² | ISO 179 |
| Charpy Impact Strength Un-Notched | 17.0 | kJ/m² | ISO 179 |
| Elongation (Breakage) | 2.5 | % | ISO 527 |
| Flexural Strength | 97.0 | % | ISO 527 |
| Rockwell Hardness (M/R Scale) | 83/ | MPa | ASTM D-785 |
| Tensile Modulus of Elasticity | 3700.0 | MPa | ISO 527 |
| Tensile Strength (Breakage) | 67.0 | MPa | ISO 527 |
| Value | Units | Test Method / Conditions | |
| Density | 1.08 | g/cm³ | ISO 1183 |
| Value | Units | Test Method / Conditions | |
| Coefficient of Linear Thermal Expansion | 7.0 | 10⁻⁵ / °C | ISO 75-2 |
| Heat Deflection Temperature B (0.45 Mpa) | 101.0 | °C | ISO 75-2 |
| Heat Deflection Temperature A (1.8 Mpa) | 98.0 | °C | ISO 75-2 |
| Maximum Service Temperature | 85.0 | °C | — |
| VICAT Softening Temperature (10 N) | 108.0 | °C | ISO 306 |
| VICAT Softening Temperature (10 N) | 105.0 | °C | ISO 306 |
| Value | Units | Test Method / Conditions | |
| Light Transmission | 86.0 | % | ASTM D-1003 |
| Refractive Index | 1.561 | — | ASTM D-542 |
Regulatory & Compliance
- Reaction to Fire
Country Code Classification France DIN 4102-1 B2 Germany NFP 92-507 M4
Storage & Handling
- Handling
- Cleaning:
A solution of water and neutral detergent may be employed. They should always be cleaned and dried with a soft cloth with very little pressure.
- Important!
Do not remove the protective film from the sheets before cutting, and once this has been accomplished blowing or suction should be employed to eliminate any chips.
- Manual cutting
Manual saw cutting should always be carried out with a fine-blade saw, with the sheet firmly held in place to prevent vibration. The teeth should be well-sharpened.
- Cutting with a blade
When cutting with a blade, this should be passed several times in order to achieve the desired depth (this should be a minimum of half the thickness), employing a uniform pressure. The sheet must be firmly secured to prevent sliding. Afterwards, the sheet should be placed on a flat surface and gentle pressure applied until it breaks. Sandpaper may be employed to eliminate any burrs.
- Electric sawing
Cutting recommendations for NUDEC® SANuv sheets
- Disk diameter: 350 - 400 mm
- Number of teeth: 84 - 106
- Rotation speed: 2,800 - 4,500 rpm
- Advance speed: 12 - 18 m/min
- Type of teeth
Alternate teeth or combined straight and trapezoid. The sheet must be firmly secured to prevent it rising up and causing cracks when the disk passes. The translation speed should be as uniform as possible. The disk must be regularly sharpened.
- Polishing:
Pre polishing may be required to eliminate any marking caused by the cutting disk.
The following may be used:- Rotating rigid fabric disks with polishing paste.
- Rotating soft fabric disks with polishing for the final finish.
- Drilling
Metal and wood drill bits may be employed. The larger the diameter, the lower the speed. Water or air can be used for cooling. A hole diameter that is approximately 1.5 times that of the screw to be used should be drilled in order to prevent sheet dilation. The sheet must be firmly secured to prevent breaking. A sharp object can be employed to start the hole.
- Gluing:
- Solvents
Various solvents may be employed in gluing. The most common is MEK (methyl-ethyl-ketone). In general, aromatic solvents applied with a syringe or fine paintbrush can be used. Other possible solvents are acetone and styrene. It is recommended that 5% of SAN be dissolved in these products to thicken the mixture. Before carrying out the actual gluing operation the surfaces to be glued must be cleaned must be cleaned with alcohol.
- Glues
These are solvent-free adhesives, with two components based on polyurethanes. They are transparent, odor-free and do not attack the plastic. They permit different type of plastic to be joined together and also plastics to other materials, such as glass, aluminum and steel etc.
- Welding
NUDEC® SANuv sheets may be welded together using ultrasound or heat pulses. The welding quality will increase when the distance between the sonotrodes is decreased. High frequency welding is not possible because the material has low dielectric losses.
- Thermoforming:
NUDEC® SANuv sheets are easily thermoformable in any oven with air circulation. The sheet temperature must exceed 120°C. If the sheets have been stored in a damp environment, it is preferable for them to be previously dried for a few hours (two to four) at an approximate temperature of between 80 to 85°C in order to avoid thermoforming problems. To achieve a good finish, the mold employed can also be heated to between 50 and 60°C. An excessive mold temperature could harm the sheets. All NUDEC products use film to protect the surface from possible damage during production and transport. This protective film is not prepared to withstand high temperatures and must be removed prior to thermoforming or hot-bending.
- Bending
The sheet should be locally heated with an electrical element and then quickly bent. It is a good idea to cool the part of the sheet that is closest to the bending line. When bending thick sheets, it is recommended that both sides are heated, with the sheet being firmly secured after bending in order to maintain the exact position. We recommend that the smallest radius be twice the sheet thickness. All NUDEC products use film to protect the surface from possible damage during production and transport. This protective film is not prepared to withstand high temperatures and must be removed prior to thermoforming or hot-bending.
- Decoration
The sheet surface must be clean and free from grease, demoulding agents and any other contamination. Degreasing can be performed using a 50/50 mixture of isopropanol and isobutanol. NUDEC® SANuv sheets are easily printed, lacquered and painted using a wide range of products. Many coverings recommended for acrylic sheets are also suitable for NUDEC® SANuv sheets. It should be ensured that the NUDEC® SANuv sheet will not be attacked by solvents incorporated in the lacquers or varnishes and paint manufacturers should be consulted about products designed to cover SAN.
- Vacuum metallisation
NUDEC® SANuv sheets can be vacuum metallised. It must be stressed that the obtained finish will depend of the surface shine of the sheet before this process is carried out. The print film should be removed just prior to printing to prevent the surface from damage.
- Transport
- Dirt and sharp angles may damage the surface in the case of friction.
- During transport, stable, flat pallets should always be used and the sheets secured to prevent sliding.
- The sheets must not be allowed to slide over each other during loading and unloading operations.
- They should be lifted by hand without any dragging or by suction-cup lifting equipment.
- Storage
- An incorrect storage position can lead to permanent deformation.
- The sheets should be stored in closed premises that guarantee normal environmental conditions.
- The sheets should be stored one on top of the other on flat horizontal surfaces and fully supported over their total area.
- The topmost panel should be covered with a sheet of polyethylene or cardboard etc.
- NUDEC®SANuv sheets must not be stored in direct sunlight or under conditions of high humidity and/or temperature as this can have a negative effect of protective film adhesion.