Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Applications
- Machinery protection
- Riot shields
- Vending and recreational machines protection
- Lighting
- Security glazing
- Roofing
- Construction components
- Town furniture (anti-vandal)
- Caravan bodywork panels
- Motorhome parts
- Office walls dividers
- Cladding
Properties
- Physical Form
- Mechanical Properties
- Physical Properties
- Thermal Properties
- Optical Properties
- Sheet Properties
- Excellent transparency and surface brightness
- High heat resistance
- They are available with UV protection
- Elevated hardness
- Excellent impact strength
- Thermoformable
- Intermediate chemical resistance
- Fire-resistant
- Reduced noise transmission
- Recyclable
- Properties
Dimensional stability to heat:
NUDEC®PC sheets can withstand temperatures of up to 120°C depending on the application.
Transformation:
They can be sawn, edged and drilled without any burring. Crack-free holes can be easily made. They can be milled with conventional milling machines. A good clamping system is required. Laser cutting is not recommended.
Weathering:
NUDEC®PC sheets are not protected against sunlight. However, the actual material itself possesses a certain resistance to outside weather so that it can be used in exterior applications in locations where sunlight is of low intensity and does not permanently fall on the sheets. For exterior applications where the sheets are permanently exposed to ultraviolet light, a stabilized product, such as NUDEC®PC uv sheets, which are protected on both sides, are recommended. When used in exterior applications, the protective film must be removed immediately, since exposure to sunlight can cause permanent adhesion to the sheet.
PVC profile seals:
PVC additives used in the manufacture of Seals. Plastifying agents derived from pthalic acids that are used to provide the PVC with ductility; this plastifying agent migrates to the surface and attacks the PC resulting in stress cracking general deterioration of the sheet properties.
| Value | Units | Test Method / Conditions | |
| Charpy Impact Strength Notched (23ºC) | 55.0 | kJ/m² | ISO 179 |
| Elasticity Modulus in Traction | 97.0 | MPa | ISO 527 |
| Elongation (Breakage) | 150.0 | % | ISO 527 |
| Izod Notched (23 ºC) | 72/118 | J/m | ISO 180 |
| Izod Unnotched (23ºC) | 950.0 | J/m | ISO 180 |
| Resistance to Flexion | 2300.0 | MPa | ISO 178 |
| Rockwell Hardness (M/R Scale) | No breakage | MPa | ASTM D-785 |
| Tensile Strength (Breakage) | 72.0 | MPa | ISO 527 |
| Tensile Strength (Deformation) | 60.0 | MPa | ISO 527 |
| Value | Units | Test Method / Conditions | |
| Density | 1.2 | g/cm³ | ISO 1183 |
| Value | Units | Test Method / Conditions | |
| Coefficient of Linear Thermal Expansion | 146.0 | 10⁻⁵ / °C | ISO 75-2 |
| Heat Deflection Temperature B (0.45 Mpa) | 6.8 | 10⁵ /mK | ISO 75-2 |
| Heat Deflection Temperature A (1.8 Mpa) | 143.0 | °C | ISO 75-2 |
| Maximum Service Temperature | 120.0 | °C | — |
| VICAT Softening Temperature (10 N) | 151.0 | °C | ISO 306 |
| Value | Units | Test Method / Conditions | |
| Light Transmission | 87-91 | % | ASTM D-1003 |
| Refractive Index | 1586.0 | — | ASTM D-542 |
Regulatory & Compliance
- Reaction to Fire
Country Code Classification Germany DIN 4102-1 B1 France NFP 92-507 M2
Storage & Handling
- Handling
Cleaning:
The sheets should be cleaned with a solution of warm water with a little neutral soap and rinsed with water employing a very soft sponge or chamois leather.
Cutting:
Sawing
The common types of saws employed in wood or metal carpentry provide good results when sawing NUDEC®PC sheets: disk, band, saber, jigsaw, hewing and handsaw. Disk or band saws produce the best edges and can perform almost all cutting operations. Blade shape plays an important role in sawing plastics. It is recommended to employ a band saw with separated teeth because the empty space will facilitate the exit of the cut chips. The best results are obtained using teeth without any inclination and also somewhat jumped. To prevent the plastic from cracking or melting, the blade must be very sharp and the guide should very close to the cut to prevent vibration.
Polishing:
The sheet edges can be buffed using buffing paste, first with a rigid fabric disk and then with a soft cloth to produce the final finish.
Drilling:
NUDEC®PC sheets can be drilled quite easily with a normal stand drill or even with a hand-drill using clean, sharp drill bits. Drill bits designed for use with plastics are recommended. It is occasionally possible to use ordinary drill bits, but they should be sharpened to reduce the depth or cutting angle. During the drilling operation, the sheet must be firmly held, but avoiding excessive pressure at the same time. The hole must be larger than the screw to allow for thermal dilation and contraction. There must be a separation between the edge and the hole of at least twice the hold diameter. Speeds of up to 1,750 rpm are preferred for small drill holes and for larger holes, whereas speeds as low as 350 rpm are advised. The use of compressed air is recommended to prevent overheating, especially in cases where sheet thicknesses exceed 5 mm.
Gluing:
Gluing with adhesives
Among the recommended adhesives are those based on solvents, hot melt, silicone, two-component polyurethane based, two-component epoxy based and adhesive tapes.
The following should be taken into considerations when selecting an adhesive:
- Chemical compatibility with the PC sheets
- Esthetics of the finished joint
- Dilation and contraction with temperature changes
- Fragility, rigidity and flexibility
- Alterability with respect to outside weather, where applicable
- Duration / useful lifetime
- Adhesive strength (adherence to the plastic)
- Final usage requirements
The surfaces to be glued should be cleaned with a soft cloth and alcohol to eliminate all dirt and grease. For perfect gluing of the surfaces to be joined, they must fit together well (without exerting force and without leaving any cavities) and should also be smooth and unpolished. Some adhesives can contract on drying. This effect can be compensated by cutting the joint at an angle, thus leaving space to be filled with a slight excess of adhesive.
Thermoforming:
There are various thermoforming techniques that can be applied to NUDEC®PC sheets in order to obtain the desired shape once heated, using mechanical force, compressed air or a vacuum. Molds can be made of plaster, water-cooled steel, cast aluminum or other materials, such as wood or epoxy. o Pre-drying is necessary in a forced air circulation oven at 120 C because moisture can produce bubbles or other problems in surface appearance. Drying time depends on 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 pre-drying, thermoforming or hot-bending.
- Vacuum molding
The thermoforming temperature must be between 185 and 205°C, depending on sheet thickness.
- Drop-molding
Temperature between 145 and 160°C.
Bending:
- Hot-bending
Using two electric element heaters on both sides, (top and bottom), it becomes possible to bend at more precise angles. When the sheet o reaches the correct temperature (above 155 C) a slight resistance will be noted to folding, this is when the sheet is easily bent. If it is attempted to bend the sheet before it has been sufficiently heated, cracks will appear that could lead to breakage. If, on the other hand, the sheet is over-heated, bubbles might appear along the section that is to be bent. 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 pre-drying, thermoforming or hot-bending.
- Cold bending
The maximum recommended angle is 90° for sheets having a thickness of less than 6 mm. This angle becomes 135° for sheets with a thickness greater than 135 . It is often necessary to bend in excess in order to achieve the desired angle.
Decoration:
- Printing
NUDEC®PC sheets can be printed using most printing methods. NUDEC has a list of inks suitable for silk-screening NUDEC®PC.
- Painting
NUDEC®PC can be painted without surface treatment. 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®PC 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.