PLEASE NOTE: since August 2023, polyurethane with a diisocyanate content of more than 0.1% may only be used in companies where employees have completed the required courses.
Companies can register for online training via THIS link.
You can also read more information here.
Polytek PT Flex 60 flexible polyurethane
The polyurethane from this renowned manufacturer is of high quality.
This is a 2-component polyurethane that cures quickly into a sturdy rubber. This polyurethane rubber is perfect for molding decorative pieces, production parts, tools, models, etc.
Due to the slightly bright yellow / amber color, this polyurethane can be easily colored with polyurethane dyes.
The hardness is clearly lower than with the PT Flex 80 and the bendability is also a lot better
Processing
The model or mold in which PT Flex 60 is processed must be non-porous and may contain no sulfur. So be careful with (dried) clay, etc. If the model is porous or contains sulfur, it is best to seal it with shellac or another well-sealing sealer. If the product is only porous, PVA or ordinary paints will also suffice.
After applying a pore filler or lacquer, a release agent must also be applied. This is certainly necessary on Shellac. But a release agent must also be applied to non-sealed products.
Please test carefully whether the mold or shape (after sealing and release agent) is indeed compatible with this polyurethane.
Make sure components A and B are both at room temperature (20-25 o C) and the ambient temperature is above 16 o C during the whole process including full cure.
Stirr the B component well in its container before decanting.
Mix with a spatula in a clean mixing bowl as machine mixing can trap a lot of air. Scrape the sides of the mixing bowl carefully while stirring.
Pour as soon as possible after stirring. DO NOT scrape sides of the mixing bowl while pouring.
Let the product harden at room temperature and de-mold after the de-mold time. The final properties, as with most room temperature polyurethanes, are reached after 7 days.
Cleaning
Wipe down tools before the product hardens. Use ethanol as a solvent, but be careful of flammability. Wax surfaces of desk etc, to keep workspace clean easily.
Characteristics
- Mixing ratio: 1A: 1B by weight (e.g. 100 grams A with 100 grams B)
- Hardness: 55 Shore A
- Pouring time, 250 grams: 5 minutes mix (min)
- Demoulding time at 25 ° C: 2 hours
- Demoulding time at 70 ° C: 30 minutes
- Specific weight: 1.04 gram / cm³
- Cured Color: Yellow / Amber cloudy, clear
- Initial Mixed Viscosity: 760 cSt
- Specific volume: 0.94 L / Kg
- Shrinkage on curing: 0.25% (highly temperature dependent)
- Tensile strength: 2.14 N / mm²
- Elastic modulus: 1.31 N / mm²
- Elongation: 220%
- Tear strength: 12.43 N / mm
Shelf life
This product has a shelf life of at least 6 months when properly stored. Store in tightly closed containers without moisture (preferably covered with an inert gas) in a dark location between 15-32oC.
Safety
Polytek PT Flex 60 A Component
H-CodeHazard Statements
H315 Causes skin irritation.
H317 May cause an allergic skin reaction.
H319 Causes serious eye irritation.
H332 Causes serious eye irritation.
H334 Harmful if inhaled.
H335 May cause respiratory irritation.
H351 Suspected of causing cancer
H373 May cause damage to organs through prolonged or repeated exposure.
P-Code Precautionary Statements
P202 Do not handle until all safety precautions have been read and understood.
P260 Do not breathe dust/fumes/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P284 Wear respiratory protection
P302+352 IF ON SKIN: Wash with plenty of water/soap
P304+340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305+351+338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing.
P308+313 If skin irritation occurs: Get medical advice/attention.
P403+233 Store in a well ventilated place. Keep container tightly closed.
P501 Dispose of contents/container in accordance with local/regional/national/international regulations.
Polytek PT Flex 60 B Component
H-CodeHazard Statements
H317 May cause an allergic skin reaction.
H411 Toxic to aquatic life with long-lasting effects
P-Code Precautionary Statements
P272 Contaminated work clothing should not be allowed out of the workplace.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352 IF ON SKIN: Wash with plenty of water/soap
P333+P313 If skin irritation or a rash occurs: Get medical advice/attention.
P391 Collect spillage.
P501 Dispose of contents/container in accordance with local/regional/national/international regulations.
EN - Product Information Polytek PT Flex 60 flexible polyurethane.pdf
EN - Product information PT Flex 60
EN- Safety Data Sheet PTFLEX A
EN - Safety Data Sheet PTFLEX B
