POLYPROPYLENE (PP) Home > Products & Services > Polypropylene (PP)

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Polypropylene (PP) is a thermoplastic from the polyolefin group. It is a semi-rigid, translucent polymer with good toughness and weather resistance properties, low water absorption and is easily moulded to desired shapes. PP is a largely non-polar, partially crystalline thermoplastic with a crystallinity of 60 to 70% and a density of 0.90 to 3 0.91 g/cm which is amongst the lowest for all plastics. It is generally available in three advanced forms:

PP-Homopolymer (PP-H): Produced by a continous chain of polypropylene units which results in a high stiffness material. Advanced homopolymer types like beta nucleated PP, are used to make piping systems and sheets.

PP-Copolymer (PP-C): Produced by adding 4-15% ethylene to the polypropylene gives much improved impact strength and considerably lowers the brittle point to below normal service temperatures i.e. -15°C to -20°C.

PP Random Copolymer (PP-R): Random copolymer polypropylene is a clear, semi-crystalline polymer which exhibits high stiffness, better impact strength and good electrical insulation properties.

Other options in PP include fire retardant and electro-conductive grades. PP can also be UV stabilized.


 

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PE Products at Sangir:
Pipes
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Profiles
PP-C PP-H PP-R PP2222
Specific gravity (ρ) ISO 1183 3 g/cm3 0.91 0.9 0.909 0.912
Max. permissible service temp   °C 0 to 75 5 to 100 5 to 100 5 to 100
Tensile strength at yield (σS) ISO 527 Mpa 26 31 26.1 26
Elongation at break (εR) ISO 527 % - ≥ 400 ≥ 400 ≥ 400
Impact strength (an) ISO 179 2 kJ/m2 No Break No Break No Break No Break
Modulus of elasticity (Et) ISO 527 Mpa 1200 1400 1200 1200
Coef. of linear therm.
expansion (α)
DIN 53752 K-1 x 10-4 1.5 1.5 1.5 1.5
Vicat Softening Temp ISO306 OC 148 150 131.3 148
Shore Hardness ISO 868 Shore D 67 70 60 67

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PE Products at Sangir:
Pipes
Fittings
Sheets
Weld & solid rods
Profiles
Features & advantages of PP:
Suitable for underground pipes through adjustment to local ground movement
Excellent Chemical Resistance: Increases reliability and scope of use
High Thermal Resistance: Less vulnerable to weathering
High Stress Crack Resistance: Prevents inching growth of cracks
Excellent Fusion Capabilities: Ease of installation
Low density, Low weight: Ease of transportation
Homogenous structure: Aesthetically superior
Good elasticity: Easy installation
Non Toxic, Food Grade
High Impact Strength: Better durability
Smooth Inner surface: Low frictional loss
Good Thermal insulation
Very good fatigue resistance
Excellent dielectric properties

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PE Products at Sangir:
Pipes
Fittings
Sheets
Weld & solid rods
Profiles
Acid Fillings Stations
Laboratories
Automotive Industry
Nuclear Research Centres
Chemical Industry
Paper & Pulp Mills
Construction (Plumbing)
Pharmaceutical Industry
Desalination Plants
Pickling Lines
Effluent Treatment / Disposal Plants
Refineries
Electroplating Plants
Textile Mills; Food & Beverage
Thermal Baths
Galvanizing Plants
Water Purification Plants
Industrial washing / bleaching lines
Packaging of Electrical Components
Suction & exhaust pipelines
Lined Pipings (Mild Steel + PP), (FRP +PP)
Water, effluent transport
Storage tank for chemicals
Hoods, Fume Ducts

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