The production of polyurethane rigid foam sandwich panels has become a fundamental tool for high performance building systems.
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Although the processability between PIR and PUR panels is similar but with certain differentiating nuances, such as processing temperatures, higher in the case of PIR panels, or the use of adhesives to improve the adhesion between the sheet and the foam, in the case of PIR panels, although more and more PUR panels producers are also using an adhesive in certain panels to guarantee the adhesion between the sheet and the foam, the field of application of PUR/ PIR sandwich panels is very similar, and they can be used for:
- External enclosure: facades and roofs.
- Compartmentalisation of interior spaces: fire sectors, partitions, food processing rooms, clean rooms, cold rooms, etc...
Advantages of PUR/PIR sandwich panels
The advantages of
- Thermal insulation: It is one of the thermal insulation products with the lowest thermal conductivity coefficient. It guarantees the absence of thermal bridges thanks to the homogeneity of the insulation at all points of the panel. The assembly also minimises thermal bridges thanks to the joints, normally tongue and groove, between panels. Reduced insulation thickness thanks to the low thermal conductivity coefficient of the polyurethane foam.
- Optimisation of usable space, since a minimum thickness is required to achieve a maximum thermal insulation level.
- Virtually no water absorption due to the closed cell structure of the polymer, which makes them waterproof.
- Mechanical properties that give the panels great rigidity and low weight, which facilitates and economises transport, handling, installation and structural sizing. Ease of machining and cutting.
- Reaction to fire performance which makes PUR/PIR sandwich panels fire safe.
- PUR/PIR sandwich panels are a prefabricated product, sustainable in their manufacture and very light for transport to the construction site. The construction of a building, both residential and industrial, with polyurethane sandwich panels generates very little waste which makes the building process more sustainable. It is recyclable: the metal sheet is melted and the polyurethane is recycled using three techniques; mechanical recycling, chemical recycling or incineration with energy recovery. The insulating capacity of polyurethane sandwich panels helps to reduce energy consumption.
The advantages of PUR / PIR sandwich panels is what makes these insulation panels even more attractive for health, safety and environment:
Properties of PUR/PIR sandwich panels
In terms of properties, the main difference between PUR/PIR sandwich panels lies in their composition. The foam obtained with PIR (Polyisocyanurate) systems contains a high degree of aromaticity due to the formation of the polyisocyanurate structure, providing a higher thermal stability compared to urethane (PUR) groups, thus improving its fire resistance.
The PIR foam reacts safely to fire by forming a carbonised surface layer that protects and prevents the penetration of fire into the inner layers. In the composition of PIR panels, as a general rule, there is a lower concentration of flame retardants than in PUR panels, thus generating less smoke during combustion. There are even PIR panels on the market that are free of halogen flame retardants.
Even so, the products must be tested to determine their fire behaviour with the reaction and fire resistance test methods according to current regulations depending on the location.
In terms of thermal properties, PIR remains stable in a higher temperature range than PUR.
Renewable and Recyclable Sourced Product Management
At Synthesia Technology we reaffirm our commitment to sustainability by promoting the circularity of materials and improving the environmental performance of our products, all to reduce our impact on the planet.
Since , Synthesia Technology has been using BIO-based raw materials from renewable resources and recycled PET in the production of polyols, a key raw material used in the manufacture of high-performance core insulation sandwich panels with PIR technology, demonstrating that it is possible to use plastic responsibly, recycling it into a new product that helps to reduce energy consumption and CO2 emissions, to the benefit of all.
Visit our website for the most important commercial references for PIR insulation systems for continuous lamination.
What Is PIR?
PIR or polyisocyanurate is one of the most thermally efficient insulation materials available in the industry. PIR is often described as combustible insulation, a term used for many other insulating materials. However, these materials (polyurethane/PU/PUR/EPS/XPS) do not have the properties that PIR possesses.
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PIR is a thermoset polymeric material, combining isocyanates and polyols. This means it does not melt on heating. Depending on the process of manufacturing and the standard followed, the quality and performance of PIR may vary. That is why, it is important to check for the required certifications when making a choice.
What Is a PIR Panel?
PIR sandwich panels or polyisocyanurate sandwich panels comprise three layers&#;high-density, rigid polyisocyanurate foam covered with coated galvanised or aluminum plates on both sides.
These PIR panels have superior heat insulation properties as well as mechanical load and and high wind speed load-bearing capacity and, thus, find application in the construction of building materials that require high fire resistance. In fact, its thermal conductivity is below 0.023 W/(m·K).
In modern construction, PIR sandwich panels are also the most effective acoustic materials.
Where Are PIR Panels Used?
PIR panels have unique properties.
- Ability to reduce the heat transmission caused due to the difference between the internal and external temperature. This helps achieve maximum freezing efficiency when used in refrigeration or cold storage.
- Heat and sound insulation
- Better chemical-resistance and water-resistance properties
- Anti-corrosive and insect-free
- Easy installation
- Lightweight
- Environment-friendly
Because of the abovementioned properties, PIR sandwich panels find extensive applications in chemical industry, petroleum industry, construction of clean rooms, cold storages, warehouses, prefab buildings, and ripening chambers, packaging, cold chain and refrigeration industry, military and space industry, transportation, aviation, and others.
What Is the Difference Between PU and PIR Panels?
Rigid Polyurethane (PU) foam has been used in construction since the s as a high-performance insulation material. Over the years, PIR has become the preferred choice due to its exceptional thermal insulation properties.
One of the major difference between PU and PIR sandwich panels is the fire/flame resistance property. PU foam is known has limited fire resistance and PU sandwich panel is normally produced with B2 and B3 fire classification. Whereas, PIR not only slows down the spreading of flames but also lowers smoke emission. When compared to PU, PIR panels have better fire resistance, lower combustibility, and higher working temperature range. Usually, PIR panels are produced in accordance with the B1 or B2 fire rating.
What Is the Difference Between PIR and XPS?
Both EPS (expanded polystyrene) and XPS (extruded polystyrene) are manufactured from the petroleum-based resin which is a thermoplastic based on non-cross-linked polymers. Such polymers when exposed to high temperatures melt and also get degraded in certain solvents.
PIR, on the hand hand, is a thermoset plastic which is based on cross-linked polymers that can tolerate higher temperatures and have better heat resistance. They do not melt but char at high temperatures and are also more resistance to solvents and chemicals than polystyrene.
Is PIR Panel Fire Rated?
Rinac&#;s PIR panles are B2-grade fire-rated and certified as CLASS &#;O&#; building material in accordance with BS 476 part 6 & 7 standard.
How Can Rinac Support Your Construction Needs
Rinac offers clean modular construction options with three different types of core materials.
PUF sandwich panels
- Metal laminates made from pre-painted galvanised steel
- Low density of up to 35&#;40 kg/m3
- Customised finishes of aluminum, plastisol, and stainless steel
- CFC-free and high-temperature insulation
PIR sandwich panels
- Certified by ISO, OHSAS, EMS [IMS-ISO & of and OHSAS /]
- B2-grade fire-rated PIR material
- Certified as CLASS &#;O&#; building material in accordance with BS 476 part 6 & 7 standard
- Quick and easy-to-install with self-mating interlocking
- Excellent insulation as R/U values drastically reduce radiant heat transfer and condensation
FM approved sandwich panels
- In accordance with the European standard EN and ISO standards
- CFC-free high-quality polyisocyanurate (PIR) foaming material with an average density of 42 kg/m3, firmly sandwiched between the metal surfaces
- Factory-made and self-supporting
- Double skin metal faced insulated
- Exceptional fire-resistant and thermal properties
Know more about smart and durable construction solutions including InstaCeil, InstaBuild, HPCC, and Firearmet today! Speak to our experts and discover how we can support your construction needs with deep industry knowledge and technical expertise.
Contact us to discuss your requirements of PIR Wall Panel. Our experienced sales team can help you identify the options that best suit your needs.
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