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Engineering and design plastics Ltd, 84 High Street, Cherry Hinton, Cambridge, Cambridgeshire, CB1 9HZ, UK.

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POLYPROPYLENE COPOLYMER & HOMOPOLYMER

 

Polyethylene & polypropylene are members of the polyolefine family of thermoplastics. The various grades of these materials have similar properties. Compared to other types of thermoplastic they all have low densities and negligible water absorption. Polyolefines have very good resistance to chemicals, this means whilst ideal for manufacturing tanks, tubs and baths they are practically impossible to solvent bond or glue. Engineering & Design Plastics offer a fabrication service in polypropylene and HD-PE300 by hot air welding the parts together.

Sump tank fabricated from Polypropylene Copolymer sheet using hot air welding in house at Engineering & Design Plastics Ltd of Cambridge.

 

POLYPROPYLENE

Natural, Beige, and black Rod diameter 10mm - 500mm

Co-polymer polypropylene extruded sheet natural, beige, black, white 1.5mm - 12mm

Homo-polymer polypropylene sheet/block natural and beige extruded 3mm - 30mm

Homo-polymer polypropylene sheet/block natural and beige pressed and planed 10mm - 70mm

A list of the most common Sizes etc that are readily available as standard items can be down loaded here

Water tank fabricated from Polypropylene Copolymer sheet

 PROPERTIES
      Polypropylene C

 Polypropylene H

  
Specific gravity DIN 53479 g/cm3 0.91

0.91

  
Water absorption DIN 53495 % 0.01 0.2  
Chemical resistance DIN 53476 - - DIN 8075  
Permissible service temperature (no stronger mech. stress involved)          
Upper temperature limit - oC 100 100  

Lower temperature limit

 - oC -30 0  
           
Tensile strength at yield DIN 53455 MPa - 41  
Elongation at yield DIN 53455 % - 11  
Tensile strength at break DIN 53455 MPa - 36  
Elongation at break DIN 53455 % - >100  
Impact strength DIN 53455 KJ/m2 - No break  
Notch impact strength DIN 53455 KJ/m2 - 8  
Ball indentation hardness/Rockwell DIN 53456 MPa - 75  
Modulus of elasticity DIN 53457 MPa - 1350  
           
Vicat softening temp. VST/B/50  DIN 53460 oC - 95  
Heat defection temp. HDT/B  DIN 53461 oC - 88  
Coef. of linear thermal expansion DIN 53752 K-1 x 10-4 1 1.5  
Thermal conductivity at 20oC DIN 52612

W/m.K

 0.22 0.22  
           
Volume resistivity DIN 53482 Ohms.cm >1016 >1016  
Surface resistivity DIN 53482 Ohms >1013 >1013  
Dielectric constant at 1 MHz DIN 53483 - - 2.3  
Dielectric loss factor DIN 53483 - - 0.0002  
Dielectric strength DIN 53481 kV/mm - 70  
Tracking resistance DIN 53480 - - KB>600  
           
Bondability - - Not Practical Not Practical  
Coef. of friction DIN 53375 - - 0.3  
Flammability UL 94 - HB HB  
UV stabilisation - - Limited Limited  
Acid resistance - - Yes yes  
Hydroxide resistance (dilute) - - Yes yes  
Hydrocarbon resistance - - Yes yes  
CKW resistance - - Limited limited  
Aromatic resistance - - No No  
Ketone resistance - - Yes Yes  
Resistance against hot water - - Yes Yes  
This table is a meant as an aid to help in the choice of a material. The data listed here fall within the normal range of products properties, but they must not be used to establish material specification limits nor used alone as the basis of design.
 

 

The information given here is believed to be correct, but completeness and accuracy are not guaranteed. The user shall be fully responsible for determining the suitability of products for the intended use.