Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1305-2080-9 |
Объём: | 88 страниц |
Масса: | 153 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
High Quality Content by WIKIPEDIA articles! Polysulfone describes a family of thermoplastic polymers. These polymers are known for their toughness and stability at high temperatures. They contain the subunit aryl-SO2-aryl, the defining feature of which is the sulfone group. Polysulfones were introduced in 1965 by Union Carbide. Due to the high cost of raw materials and processing, polysulfones are used in specialty applications and often are a superior replacement for polycarbonates. These polymers are rigid, high-strength, and transparent, retaining its properties between ?100 °C and 150 °C. It has very high dimensional stability; the size change when exposed to boiling water or 150 °C air or steam generally falls below 0.1%. Its glass transition temperature is 185 °C. Polysulfone is highly resistant to mineral acids, alkali, and electrolytes, in pH ranging from 2 to 13.
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