Steel Suppliers and stockholders - Steel Express

Polypropylene

Polypropylene (PP), is a semi-crystalline,  thermoplastic polymer used in everything from packaging and reusable containers to textiles  and automotive components, to banknotes. Polypropylene is rugged and resistant to many organic solvents, degreasing agents, bases and acids.

In addition to its excellent physical and chemical properties, polypropylene is widely used because of its ease of fabrication and ability to sustain high continuous operating temperatures. Compared to polyethylene it has a lower impact strength, but offers higher working temperature and tensile strength.

Polypropylene has a low surface energy which means that many common glues will not bond to the surface. Joining polypropylene requires specialist glues or can be done using a welding processes.

Polypropylene is available in two primary types Polypropylene Homopolymer (PP-H) and Polypropylene Copolymer (PP-C)

Polypropylene H (PP-H)
PP-H is used in engineering and tooling applications as if offers higher rigidity than the copolymer grade, PP-H has a marginally better maximum working temperature as well as better chemical stability. It is resistant to staining and has a low moisture absorption rate. Polypropylene homopolymer finds applications in vacuum systems and systems where hot liquids and gases are transported. If can be found in valves, flanges and gears.

In natural form Polypropylene H is physiologically inert and is approved for use in contact with food.

Forms: Rod and sheet, natural and beige.

PP-C (Polypropylene Copolymer)
Polypropylene copolymer is main found in more cosmetic applications, such as cladding. In particular is used for hygienic cladding and a range of other applications in the food industry.

Forms: Rod and sheet, black and beige.

Further information on our range of polypropylene products is available on request, please call if you have specific needs or would like advice on material choices.

MSDS and product data sheets available on request

Call 01902 716333 for nationwide delivery of polypropylene sheet and rod

 

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Based in Wolverhampton, West Midlands, Steel Express are steel suppliers and stockholders. Stock is delivered on our own fleet of vehicles locally and nationally quickly and efficiently on the day we say we will.

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