COMPARITIVE BETWEEN VARIOUS INSULATION SOLUTIONS

PARAMETERS EPS / XPS PUF NBR WITH PVC EPDM FIBREGLASS PE / XLPE It is produced by A two-component Nitrile butadiene EPDM rubber (ethylene Fiberglass is a strong Polyethylene is the most molding sprayed styrene mixture composed rubber (NBR) is a NBR is propylene diene mono lightweight material and is Common plastic. Many resin polymerization of isocyanate and actually a complex family of mer rubber), a type used for many products. kinds of polyethylene are under pressure polyol resin comes unsaturated copolymers of of synthetic rubber,is Although it is not as strong known, with most having (Extruded Polystyrene – together at the tip of acrylonitrile, butadiene and an elastomer and stiff as composites the chemical XPS) or by pressing a gun, and forms an Poly vinyl chloride (PVC). characterized by a wide based on carbon fiber, it is formula (C2H4)nH2. Chemical Structure polystyrene grains into expanding foam that is NBR is popular in a wide range of applications. less brittle, and its raw molds expanded under sprayed into cavities, variety of application areas The material is Non materials are much cheaper. steam or in hot water or through holes requiring oil, fuel, and Polar - Does not react with the help of steam drilled in into chemical resistance. with water again (Expanded a cavity of a finished However, the material is Polystyrene – XPS) wall. Polar - Reacts with water has polar reacts with polar Semi closed cell. Moisture Semi closed cell. Closed cell. Moisture cannot Closed cell. Moisture Open cell. Moisture can Closed cell. Moisture can penetrate. Needs Moisture can penetrate. Needs no Vapour cannot penetrate. Needs migrate freely. Needs high cannot penetrate. Needs Cellular Structure Vapour barrier. penetrate. Needs barrier. no Vapour barrier. quality Vapour barrier. no Vapour barrier. Vapour barrier. Low ‘µ’ Value (34-100). Low ‘µ’ Value (200). Nitrile Rubber has a EPDM has a homogenous Worst ‘µ’ Value (1). Extremely PE has a homogenous Very poor resistance to Very poor resistance to homogenous Vapour Barrier Vapour Barrier on poor resistance to water Vapour Barrier on account water vapour ingress. water vapour ingress. on account of its completely account of its completely vapour ingress. Needs external of its closed cell structure. Needs external vapour Needs external vapour closed cell structure. The closed cell structure. The vapour barrier (difficult & Water Vapour barrier (difficult & takes barrier (difficult & takes Water Vapour Permeability of Water Vapour takes longer time for longer time for longer time for NBR is 0.3 Perm.Inch . Permeability of NBR is installation Increase in Transmission installation Increase in installation Increase in 0.1 Perm.Inch regardless Thermal Conductivity ‘λ’ over a Thermal Conductivity ‘λ’ Thermal Conductivity ‘λ’ of the site condition. This period of time is very high over a period of time is over a period of time is means excellent Long very high very high Term efficiency and performance. Extremely high. One Extremely high. One Less than 10% even after Less than 3% even after Extremely high. One needs to Less than 10% even after needs to just immerse needs to just immerse 28days immersion in water. 28days immersion in just immerse FG in water to 28days immersion in Water Absorption EPS in water to see the PUF in water to see the water. see the effect. water. effect. effect. Poor fire resistance Poor fire resistance. Meets CLASS “0” as per Meets CLASS “0” as per Meets CLASS “0” as per BS- Very Poor fire resistance. Releases toxic gases on BS-476 Part 6 & CLASS “1” BS-476 Part 6 & CLASS 476 Part 6 & CLASS “1” as Not only the basic material burning. as per BS-476 Part 7. “1” as per BS-476 Part 7. per BS-476 Part 7. does not meet the Class O Fire Resistance The Class 1 rating indicates a The Class 1 rating standard (w/o foil) but also “Nil” surface spread of flame. indicates a “Nil” surface aids in flame spread. spread of flame. Density 24 Kg/cum 24 to 32 Kg/cum 40 to 60 Kg /cum 40 to 60 Kg /cum 24 to 32 Kg /cum 24 Kg /cum Not weather resistant. Not weather resistant. Not weather resistant. Only weather resistant Not weather resistant. Not weather resistant. Cracks occur due to Cracks occur due to Cracks occur due to material. Disintegrates with exposure to Cracks occur due to Weather Resistant prolonged exposure to prolonged exposure to prolonged exposure to Sun environment. prolonged exposure to Sun Sun and rain. Sun and rain. and rain. and rain. PARAMETERS EPS / XPS PUF NBR WITH PVC EPDM FIBREGLASS PE / XLPE Nitrosamine Yes upto 20000 ppb. No No No No No content Carcinogenic UIC - Under Due to moisture Due to moisture UIC does not take place UIC does not take place Due to moisture migration Due to moisture migration Insulation migration leads to UIC migration leads to UIC leads to UIC leads to UIC Corrosion Heavy deterioration in Heavy deterioration in Temperature variations and Temperature variations Heavy deterioration in thermal Temperature variations and thermal properties with thermal properties with humidity have no effect on and humidity have no properties with time on humidity have no effect on Ageing time on account of humid time on account of the cellular structure. effect on the cellular account of humid conditions the cellular structure. conditions humid conditions structure.

Release toxic fumes Release toxic fumes Has PVC which release Totally safe. Does not Release toxic fumes when Release toxic fumes when when burn. Mould and when burn. Mould and chloride compounds during have any fibers or burn. Mould and mildew burn. Mould and mildew Health & Safety mildew growth prevalent mildew growth fire. Material not anti harmful material. Basic growth prevalent growth prevalent prevalent fungal. Needs additives for material is antifungal. those properties. No toxic fumes released. Even though the thermal Even though the thermal Because of higher Mu value. Because of higher Mu Even though the thermal Because of higher Mu conductivity of EPS is conductivity of PUF is Hence thickness required is value. Hence thickness conductivity of EPS is value. Hence thickness 0.04W/mDegC, the 0.027W/mDegC, the lower as K value stays required is lower as K 0.03W/mDegC, the thickness required is lower as K Thickness due to thickness required is thickness required is stable over a period of time. value stays stable over a required is higher on value stays stable over a changing thermal higher on account of higher on account Thermal conductivity is period of time. Thermal account of increasing K period of time. thermal Conductivity increasing K value with increasing K value with 0.033W/mDegC at 0 deg C conductivity is value with time. conductivity is time. time. 0.034W/mDegC at 0 Deg 0.038W/mDegC for high C density. The long run they work The long run they The installed cost of NBR is The installed cost of The long run they work out The long run they work out to be costly. work out to be costly. comparable with PUF / PIR EPDM is higher to be costly. out to be costly. insulation. comparable with NBR insulation. In long run it Savings gives huge savings on account energy savings and almost no maintenance cost. Required Insulation Required Insulation Required Insulation Required Insulation Required Insulation Required Insulation Space Thickness is more. Thickness is more. Thickness is less. Space Thickness is less. Space Thickness is more. Thickness is more. Saving. Saving. Needs special tools and Needs special tools and No special tools & No special tools & It not user friendly as it Needs special tools and use use coal tar Being rigid, use coal tar Being rigid, machinery is required machinery is required causes irritation on the skin coal tar Being rigid, even even with best installation even with best of the worker. Also, it has to with best installation Installation practices the joints are installation practices the be covered with cloth / foil or practices the joints are always prone for water joints are always prone perforated Al sheet to prevent always prone for water vapour ingress. for water vapour movement of fiber in the air vapour ingress. ingress. Possible Very difficult Allows changes in line very Allows changes in line Possible Very difficult Alterations easily very easily -40 to 70 Deg C -80 to 110 Deg C -40 to 105 Deg C -200 to 125 Deg C (150 -18 to 300 Deg C -68 to 80 Deg C Temp range Deg C intermittent)