Page 346 - BOLA Catalogue

Standard Plastics – Technical Plastics - High-performance Plastics
General Information
The permanent operating temperature is the most common characteristic to distinguish between standard plastics, technical plastics and high- performance plastics: for standard plastics, the limit is 90 to max. 100 °C, technical plastics can be operated within a range of 90 up to 150 °C. All high-performance plastics have a permanent operating temperate of more than 150 °C.
The permanent operating temperature is defined as the maximum temperature with which the material can be operated for 20.000 hours but without loosing more than 50 % of its original rigidity and ductility. This means, a plastic material having a rigidity of 40 MPa in new condition has to show a rigidity of minimum 20 MPa after having been stored at its maximum permanent operating temperature for 20.000 hours.
Standard-Plastics
PP – Polypropylene
A polymer of ethylene with isostatic arrangement of methyl groups. It does not belong to the family of fluoro- plastics. PP can be autoclaved (at +121 °C) and is distinguished by good mechanical and chemical properties almost up to its softening point. PP labware is unbreakable and an economical alternative with, however, restricted chemical and thermal resistance.
PS – Polystyrene
A polymerisation product of styrene. Polystyrene is one of the most commonly used plastic materials. For many years it has been processed by injection moulding, extruding or blowing. Because of its structure, it belongs to the family of amorphous thermoplastics and is transparent, inflexible and brittle. Polystyrene has a low thermal and chemical resistance. New developed PS-HI types provide an increased impact strength
(HI = High Impact).
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TECHNICAL INFORMATION
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By the way: BOLA offers custom manufacture. From 1 piece. Hotline +49 (0) 93 46-92 86-0
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Trade names
Norolen® by BASF Hostalen® by BASF
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Trade names
Lacqrene® by ATO Vestyron® by Innovene Edistir® by Montedison