PSU RTP 981 TFE 5Use performance

1.PSU types of
    Polysulfone, aliphatic and aromatic polysulfone can be classified according to their chemical structure.
    Aliphatic polysulfone alkali, no heat, no practical value.
    Aromatic polysulfone bisphenol A polysulfone, and modified products - a non-bisphenol A polyarylsulfone and polyethersulfone, a more wide range of uses, are already commercial production of high molecular weight polyethylene sulfone plastic .
2.PSU performance
    The PSU structure of oxygen are highly Resonance diaryl sulfone group, a sulfur atom in a completely oxidized state, the high resonance of the sulfone group the polysulfone-based resin having excellent resistance to oxidation and heat resistance, has excellent melt stability These are high temperature molding and extrusion molding must have processing performance.
    PSU is slightly amber the amorphous transparent or translucent polymer, is excellent in mechanical properties, rigidity, wear resistance, high strength, even at high temperatures, maintaining the excellent mechanical properties is its outstanding advantages, its scope for - 100 ~ 150 ℃, long-term use temperature of 160 ℃, short-term use temperature of 190 ° C, high thermal stability and hydrolysis resistance, dimensional stability, low mold shrinkage, non-toxic, radiation-resistant, flame, put out the sexual. Excellent electrical properties in a wide temperature and frequency range. Good chemical stability, in addition to the concentrated nitric acid, concentrated sulfuric acid, a halogenated hydrocarbon, the ability generally acids, bases, salts, swelling in ketones, esters. UV resistance and weather resistance is poor. Fatigue strength differential is a major disadvantage.
    Polyarylsulfone (PASF), and polyether sulfone (PES) better heat resistance, excellent mechanical properties at high temperatures remain
    Any esters of the structure of unit does not exist due to the molecular structure of the polyether sulfone, polyether sulfone, having excellent thermal and oxidative stability. Recognized by UL polyethersulfone continuous use temperature of 180 ℃, and meet the requirements of UL94V-0 rated flame retardant (thickness 0.51mm). Polyethersulfone stress cracking resistance, insoluble in polar solvents such as ketones and some halogen-containing hydrocarbon. Hydrolysis resistance, very most acids, bases, lipids, hydrocarbons, alcohols, oils and lipids. Through its control of the molecular weight or adding various reinforcing materials, various fibers, to improve the properties of the polymer. The resin to meet the FDA requirements for parts can for contact with food.
3.PSU processing
    PSU before molding is pre-dried to a moisture content of less than 0.05%. PSU can be subjected to injection molding, molding, extrusion, thermoforming, blow molding, melt viscosity is high, control of viscosity is a key processing, heat treatment should be conducted after processing, to eliminate the internal stress. Can be made precise size products.
Polyarylsulfone can be injection, extrusion or compression molding techniques processed into products. Polyarylsulfone having a high melt viscosity, and so there are special requirements on the processing equipment, the general use of a dedicated processing device to meet the processing temperature of 400 to 425 ° C. The pressure requirements of 140 ~ 210MPa (20300 ~ 30450psi), and the mold temperature of 230 to 280 ° C.
    Although the polyether sulfone is a high temperature engineering thermoplastics, but can still be carried out according to conventional thermoplastic processing techniques processing. May be injection molding, extrusion molding, blow molding, compression molding or vacuum forming. Higher mold temperature helps to stress due to forming and reduce molding. General injection molding temperature of 310 ~ 390 ℃, mold temperature of 140 to 180 ° C,. PES is an amorphous resin, the molding shrinkage is small, processability paired tolerance requirements of the high and thin walled products.
4.PSU application
    PSU is mainly used for the electrical and electronics, food and daily necessities, automotive, aerospace, medical and general industrial sectors, the production of contactor, connectors, transformer insulator SCR cap, insulated casing, coil bobbins, terminal , parts of the printed circuit board, sleeve, cover, television systems, the capacitor film, the brush holder, the alkaline storage battery box, wire and cable coating. PSF also do the shield components, electrical gear, battery cover, external spare parts in aircraft, spacecraft external protective cover, photographic device tailgate, lamp parts, sensors. Instead of glass and stainless steel steam tray, coffee receptacle for microwave cooking, milk receptacle, milking machine parts, beverage and food distributor. Health and medical equipment, surgical tray, sprayers, humidifiers, dental instruments, flow controllers, from the tank and laboratory equipment, but also for the false tooth, high bond strength, but also do chemical equipment (pump housing, tower The outer protective layer, acid nozzles, piping, valves, containers), food processing equipment, dairy processing equipment, environmental protection and infection control equipment.

PSU	RTP		985
PSU	RTP		987
PSU	RTP		981 TFE 5
PSU	RTP		EMI 960.5
PSU	RTP		EMI 961

Key Words：981 TFE 5，PSU 981 TFE 5，RTP 981 TFE 5