Engineering plastics：Engineering plastics is divided into thermoplastic and thermosetting resin two categories. Thermoplastic polyimide material without melting properties, affecting a wide range of application of this kind of high performance materials. But engineering thermoset blend excellent processing performance and high performance in one. Among them, the glass transition temperature of the polyimide special engineering plastic with high (243 ℃) and melting point (334 ℃), heat deformation temperature up to 316 ℃, can be used for a long time at 250 ℃; PI resin not only heat resistance than other high temperature resistant plastic is excellent, and has the advantages of high strength, high modulus, high fracture toughness and excellent dimensional stability.
Fiber：Polyimide fiber is also known as aromatic imide fiber, is divided into ordinary heat resistant and high strength two. The former is used to filter material, the main cable sheath, the fire temperature medium service etc.. The mechanical properties of the latter can achieve carbon fiber level, is the enhancement of advanced composite materials, can also be used in bulletproof vests and other protective shield. At present, used in the manufacture of high temperature filter material is applied widely and urgent. Among them, key bag type dust removing device widely used in the domestic market -- high temperature resistant filter, commonly used is at the bottom of the PPS fiber, polyimide fiber high-end imported.
Film：In 1961 America DuPont first produced PI film, the PI film production technology is mainly focused on the three largest producer: American DuPont, Ube industries and Japan kanegafuchi chemical.
Advanced composite materials：Polyimide composite material is the most heat-resistant resin based composite materials, mainly used in aerospace.
Foam plastics:Polyimide foam is one of the best foam thermal stability of the polymer, the long-term resistance at 250 ℃ ~300 ℃ temperature, high-temperature short-time resistance at 400 ℃ ~500 ℃. Since twentieth Century 70 years successfully developed, has nearly 40 years of development history. Polyimide foam can be divided into thermosetting polyimide foam, thermoplastic polyimide foam two.
From a global perspective, grasp the core technology and industrialization of polyimide were the only manufacturers of Austria Evonic company, and the company using the synthetic process of polyimide two anhydride and two amine compared to Evonic lower cost, technology, market is not fully competitive exclusion, integration degree created the scarcity of the company.