Polyimide (PI) つのプラスチック

Polyimide (PI) - Available both as thermoplastic and thermoset resins, polyimides (PI) are a family of some of the most heat and fire resistant polymers known. Polyimide is said to possess a greater resistance to heat than any other unfilled organic material. Unlike most plastics, polyimides are available in laminates and shapes, molded parts and stock shapes. Polyimide parts are fabricated by techniques ranging from powder-metallurgy methods to conventional injection, transfer, and compression molding and extrusion. In general, moldings and laminates are based on thermoset resins although some are made from thermoplastic grades. Laminates are based on continuous reinforcements where molding resins contain chopped (short) fiber reinforcements.
The first commercial polyimides (PIs) were introduced by DuPont in the early 1960s. Because of the processing difficulties the availability of modified polyimides was established in the 1970s.
機能
高耐熱性 (38), 難燃性 (27), 耐薬品性 (26), 高熱安定性 (26), 耐摩耗性 (25), 高強度 (20), 高剛性 (18), 耐クリープ性 (17), 潤滑性 (15), 高電気特性 (12), 47 以上...
用途
電気/電子機器 (18), 自動車用途 (16), コンパウンディング (15), シール (15), ブッシング (12), 航空宇宙産業用途 (11), ベアリング (10), 工業用途 (9), バルブ/バルブパーツ (8), 半導体成形樹脂 (8), 41 以上...
Disadvantages
- Difficult to process, high temperatures required
- Limited resistance to hydrolysis
- High costs
Typical Properties and Processing Information
View material property information for Polyimide (PI) plastics.