Polyethersulfone is prepared by condensation of 4,4' -bissulfonyl chloride diphenyl ether with diphenyl ether under the catalysis of anhydrous ferric chloride. The refractive index is 1.85, the glass transition temperature is 225℃, and the thermal deformation temperature is 203℃(1.82 MPa). The heat resistance is between polysulfone and polysulfone, and the long-term use temperature is 180-200 ℃. It has excellent aging resistance and can be used for 20 years at 180 ℃. Good fire resistance. Even if it burns, it does not smoke. The strain at 150 ℃ and 20MPa pressure is only 2.55%.
Polyethersulfone
Good chemical resistance, in addition to chlorinated hydrocarbons, ketones, acids and other general organic solvents. It is stable for general acids, bases, aliphatic hydrocarbons, oils and alcohols. Good resistance to steam and superhot water (150-160 ℃), poor UV resistance, excellent electrical performance, fire resistance grade V-O.
Relative density L.37-1.5 L
Water absorption (23℃/24h) 0.43%
Tensile strength 84.3-124.5 [23℃);
41.2-59.8 (180℃)
Elongation of 40-80%
Rockwell hardness R120-134
Quality indicators
Appearance [1] Pale yellow to grayish-brown granular substance
The elongation is 40% ~ 80%
Density 1.37 ~ 1.51g/cm3
Bending strength >130MPa
The characteristic viscosity is 0.6dL/g
Impact strength (notch) >78.0J/m
Water absorption (23℃, 4h)<0.40%
Tensile strength >85.0MPa
Volume resistivity 1016~1017Ω.cm
Character and Application
Polyether sulfone resin (PES)
Poly(ether sulfones)
Polyether sulfone resin (PES) is a kind of thermoplastic polymer material with excellent comprehensive performance developed by ICI company in 1972. It is one of the few special engineering plastics currently applied. It has excellent heat resistance, physical and mechanical properties, insulation properties, etc., especially has the outstanding advantages of continuous use at high temperature and can still maintain stable performance in the environment with sharp temperature changes, and has been widely used in many fields.
Heat resistance
The thermal variant temperature is from 200 to 220 ° C, the continuous service temperature is from 180 to 200 ° C, and the UL temperature index is 180 ° C.
The hydrolysis resistance
It can withstand 150 ~ 160℃ hot water or steam, and it is not eroded by acid and alkali at high temperature.
The temperature consul of the modulus
The basic modulus is almost constant from -100℃ to 200℃, especially above 100℃, which is better than any thermoplastic resin.
Creep resistance
Its creep resistance is one of the most excellent thermoplastic resins in the temperature range below 180℃, especially glass fiber reinforced PES resin is better than some thermosetting resins.
Dimensional stability
The linear expansion coefficient is small, and its temperature reliability is also small. It is characterized by 30% glass fiber reinforced PES resin, whose linear expansion coefficient is only 2.3×10 /℃, and can still maintain a similar value to aluminum until 200℃.
Resistance to impact
It has the same impact resistance as polycarbonate. The resin without reinforcement can be riveted, but it is more sensitive to sharp cuts, so attention should be paid to the design.
non-toxic
In terms of health standards, it is approved by the US FDA and also meets the requirements of the Japanese Ministry of Health and Welfare Announcement No. 434 and 178.
Flame retardant sex
Self-extinguishable, without adding any flame retardant that has excellent flame retardancy, up to UL94V-0 grade (0.46mm)
Chemical resistance
PES is resistant to oils such as gasoline, oil, lubricating oil and cleaning agents such as Freon, and its solvent cracking resistance is the best among amorphous resins. However, it can be dissolved in polar solvents such as chloroform and acetone, and should be paid attention to when using.
Chemical resistance properties of PES
The degree of influence of inorganic reagents
Liquid ammonia a.
Ammonia a.
50% sodium hydroxide A
10% potassium hydroxide A
10% nitric acid A,
A 10% hydrochloric acid
Concentrated hydrochloric acid A,
Sulfuric acid C
Nitric acid C
Acetic acid A,
Boric acid A,
Hydrogen peroxide a.
Hydrogen sulfide a.
Iodine B in potassium iodide
The degree of influence of organic reagents
Benzene a.
Benzoic acid A
Propionic acid A,
Oxalic acid A,
Cyclohexane A
Ring has alcohol A
Cyclohexanone C
Methanol a.
Glycerin a.
Trichloroethane C
Trichloromethane A
Xylene B
Petroleum ether a.
Ethylene glycol a.
Note: A: No effect, no absorption at 20℃; B: A slight effect, a little absorption or swelling,
However, it has full durability in some applications. C: It has a large impact and cannot be used
PES polyethersulfone resin
Electrical and electronic fields
Use the solder resistance, size of PES
Good stability, resistance to various cleaning agents, can be embedded in metal parts, and good bonding with epoxy resin, etc., as H class insulation materials used in electronic and electrical fields. The main products have been developed include coil skeleton, potentiometer shell and base, hair blower parts, printed circuit board, button switch, silicon controlled insulator, electric tool motor insulator, printer, fan, relay coil skeleton, DIP switch, all kinds of connectors, etc. It can also be used to make films of different thickness for various electronic equipment and electrical products.
Mechanical field
Using its high temperature creep resistance, dimensional stability, oil resistance, good toughness and other advantages, in the general resin can not meet the requirements of the use of the place has been widely used. The main products have all kinds of machines have been developed lever, handle, such as stents, observation of X-ray equipment glass, chain saw, agricultural machinery engine and carburetor insulators, such as piston ring, heat-resisting ball bearings, gears, copier parts, camera parts, projector parts, industrial blower, automotive air conditioning parts, electric arc welding torch handle, all kinds of analytical instruments components etc.
Automobile industry
It mainly uses its rigidity and dimensional stability in the wide temperature range of -100℃ ~ 190℃, high temperature creep resistance, resistance to gasoline, diesel, all kinds of oil and other specialties. The developed products include various bearing cages, bearing bushes of brake shafts, noise canceller of igneers, engine gears, coil frames of carburettors, mirrors of fog lamps, thrust rings, etc.
Hot water areas
It is mainly used to maintain excellent creep resistance, rigidity and dimensional stability in 160℃ hot water or steam. The main products developed include valves for hot water and steam, insulators for anti-corrosion electrodes, components for temperature sensors, pump bodies and impellers for various liquid and powder pumps, radiator valves, parts for ultrafilter devices, etc.
Guangzhou Yayan Plastic Products Co., LTD. Spot supply: PEEK board/rod, PPS board/rod, PVDF board/rod, PTFE board/rod, PSU board/rod, PEI board/rod, PI board/rod, PAI board/rod, PPO board / bar, PBT board/bar, CPVC board/bar, UPE board/bar, PETP board/bar, PC board/bar, POM board/bar, ABS board/bar, PMMA board/bar, PP board/bar, PE board / bar, imported PU board/bar, German PES board/bar, domestic PVC board/bar, Swiss engineering PBI board/bar, German PA nylon series board/bar/piece, MC nylon series board. Insulation materials: Taiwan red, black electric board, cold stamping board, phenolic laminated cloth bar board, heat insulation board, epoxy glass fiber bar board, epoxy board (FR-4) asbestos board, etc. Anti-static products: anti-static POM board/bar, anti-static organic board, anti-static PC board. Anti static PVC board/bar, anti static nylon board/bar synthetic SLATE and so on.
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