Nitrile rubber, also known as Buna-N, Perbunan, acrylonitrile butadiene rubber, and NBR, is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene.
Nitrile rubber is the most commonly used rubber material. This is due to Nitrile's compatibility with most environments as well as it's relative cost compared to other rubber materials. This compound has a relatively high acrylo content, making it exceptionally resistant to petroleum base oils and hydrocarbon fuels over a temperature range of -40°F to +250°F.
Nitrile has good mechanical properties when compared with other elastomers and high wear resistance. Unless they are specially compounded, Nitrile is not resistant to weathering, sunlight and ozone.
It is used in the automotive and aeronautical industry to make fuel and oil handling hoses, seals, and grommets. It is used in the nuclear industry to make protective gloves. NBR’s ability to withstand a range of temperatures from -40 °C to +108 °C makes it an ideal material for Cold Insulation applications.
Nitrile rubber is more resistant than natural rubber to oils and acids, but has inferior strength and flexibility. . Nitrile, like natural rubber, can be attacked by ozone, ketones, esters and aldehydes.
PUF / PIR SLABS & PIPE SECTIONS
Poly Urethene Foam(PUF) materials are suitable for temperature range between -200°C to +110°C.
Poly Isocyanurate Foam (PIR) Slabs & Pipe Sections are suitable for use between -200°C to +145°C.
It has low thermal conductivity value of maximum 0.021 w/mk at 10°C. It is not easily ignitable and has negligible water permeability. It is suitable for cold / chilled pipelines, building roof & wall insulation, equipment insulation and horton sphere insulation. PIR is suitable for LNG pipe insulation.
PUF / PIR is the only CFC Free product, designed within the guidelines of the Montreal Protocol, 1987, for the protection of the Ozone layer.
Better Extreme temperature performance
Unlike most thermoplastics, PUF / PIR has low smoke emission and will not melt or drip in a fire,
Being rigid Polyisocyanurate foam, it also has a higher hot surface performance of 150°C compared with only 110°C of normal
Polyurethane Foam. This makes it ideal for use directly over steam or electrical tracing.
Its fire classification meets even the stringent requirements of the British Board of Trade for shipboard insulation as per BS 5608, the Indian Navy, and those of the US Bureau of Mines.
With PUF / PIR, insulation thickness can be reduced by 50% compared with cork, 44 compared with expanded polystyrene or fiberglass. It exposes lower surface area, reducing area or expensive vapour barrier and outer cladding per running meter of piping.
So insulation parameters can be upgraded without increasing pipe rack spacing.
Ease of application
Resistant to almost all solvents, PUF / PIR is compatible with cold applied adhesives, sealants and vapour-barrier mastics.
PUF / PIR is available in boards, pipe sections, ready used and beveled lags, with or without factory laminated facings.
Material Applied at site & suitable for large dia pipelines, underground pipelines & storage tanks.
Expanded Polystyrene (EPS)
Closed cell lightweight cellular plastics foam produced from polystyrene. Material has been modified by the addition of flame retardant additives. Gains exceptional insulating properties from the stabilised air trapped within its cellular structure. Contains no CFCs or any other gas that can escape to harm the ozone layer or decrease its insulation properties . Highly resistant to the adverse effects of moisture content. Excellent floatation properties. Low cost compared with other insulating foams. Able to withstand the effects of temperature cycling thereby providing long term performance in low temperature applications.Provides no nutritional value to vermin or pests, including termites. Styrene can be painted with any non-solvent based paint.
• Insulation of homes, commercial premises, vehicles, and pipes.
• Widely used to clad (as a base for render) residential homes as it provides an insulated, energy efficient home
• Packaging of products to minimise damage in shipment.
• Cost effective void formers in building and construction applications.
• Construction of signs, letters and shapes for a variety of uses.
• Film and stage sets.
• Marine buoyancy devices