Shanghai Daoqin Plastics Co., Ltd.

 PEI

　　PEI ( polyetherimide (PEI) ) is color transparent solid 体, add additives  

　　就 has solid has flame retardant property and low degree, oxygen index (LOI) is 47%, and other grade is UL 94-V-0 grade, density is 1.28~1.42g/cm3. PEI tool has very strong/high high temperature stability property, make is non reinforcement type PEI, still tool has very good tough property and strong/high degree. therefore utilizing PEI excellent heat stabilized property can use made as high temperature heat resistant device parts. tool has excellent mechanical properties, electrical insulation property can, resistant property can, resistant high low temperature and wear resistance can, can micro 波. PEI also has good flame retardant property, resistant chemical reaction and electrical insulation features. 玻璃化转化 temperature degree very high, 达215℃. PEI also tool has very low shrinkage rate and good and other direction machine features. add glass fiber, carbon fiber or other filler can to reinforcement modified 目; can and its it engineering plastics 组 formed heat resistant polymer/macromolecule alloy, can in -160～180℃ as temperature degree lower long use.

　　 USA 保险商实验室规定 polyether amine resin long use temperature degree is 338T and 356T（ according to and other grade ）, and other grade to UL 94V—0（10密耳 thick degree. ） oxygen index (LOI) 达47, polyetherimide (PEI) combined machine inner parts requirements FAA flame retardant property and hot dilute property material standards. it 玻璃化转变 temperature degree is 419F, 并允许 in 392F lower use, in more high temperature degree lower, generate short 期偏移. in 356T lower, tensile temperature degree and modulus separation in 41 and 2068MPa above. use glass fiber (GF), carbon fiber reinforced material in 接近玻璃态转变 temperature degree lower, tool has more high strong/high degree and rigid degree.

　　 polyetherimide (PEI) in high temperature and force lower long resistant creep property its in many structure equipment in metal and its it material. in can temperature degree, wet gas and frequency rate conditions lower performance very good electrical property can. in GHz frequency rate lower low loss consumption make polyetherimide (PEI) tool has high micro can property. it type material low water 准, in  250F100％ R． H． and 207kPa lower 120 small use water rear conductive rate, in 20兆欧 above, it can used as electronics device parts insulation material.

　　PEI is excellent coating and formed film material, can formed suitable for electronics industrial coating and film, can used for manufacturing 孔径< 0.1μm, tool has high property micro film. also can used as high temperature resistance viscous agent and high strength fiber and other.  

　　 application areas  

　　 due to PEI tool has excellent comprehensive balanced property can, has formed 效 应 used for electronics, electrical machine and aviation and other 工 部门, used as product and 文化生 active use product metal use material. use PEI取代 metal manufacturing light connectors, can make parts structure most 佳化, its manufacturing and assembly steps, maintain more dimensions. used for automotive field/area, use manufacturing high temperature parts, high rate and 指示灯, control automotive external temperature degree device （空调 temperature degree device ） and control gas and material mixed combined material temperature degree device （ has 效燃烧 temperature degree device ）. also can used as high temperature resistance lubricated 油侵蚀 true 空泵叶轮, in 180℃操 as device abrasion 口玻璃接头（承接口）, non lighting anti 雾灯 反射镜.

　　 injection molding process conditions :

　　 drying 处理: PEI tool has wet features can 导致材 material degradation. requirements wet degree value small 于0.02%. drying conditions is 150℃, 4 small drying 处理.

　　熔化 temperature degree: type type material is 340～400℃; reinforcement type type material is 340～415℃.

　　 mold temperature degree: 107～175℃, mold temperature degree is 140℃.

　　 injection pressure: 700～1500bar.

　　 injection speed degree: use can can high injection speed degree.