Polysulfone PSF PSU

Polysulfone is A thermoplastic resin containing chain links in the main chain of the molecule. The English name Polysulfone (PSF or PSU for short) has common bisphenol A PSF (commonly referred to as PSF), Polysulfone and polyether sulfone.

Polysulfone (PSU) plastics refer to macromolecular compounds with sulfone group and aromatic core in the main chain. It is a linear thermoplastic engineering plastic with excellent heat resistance, oxidation resistance, radiation resistance, electrical insulation, outstanding creep resistance and high physical and mechanical properties, excellent chemical corrosion resistance, and stable to other chemical reagents except strong solvents, sulfuric acid and nitric acid.

According to the molecular structure of its main chain, polysulfone plastics can be divided into polysulfone, polyaromone and polyether sulfone. Generally speaking, the thermal deformation temperature of polysulfone is 175 ° C, which can be used between -100 ° C and 150 ° C for a long time, and the aging resistance is excellent at high temperature. Polyarylsulfone is one of the most excellent varieties of heat resistant engineering plastics, its heat resistance can be comparable to thermosetting high temperature resistant polyimide, load deformation temperature is 275℃, long-term use temperature is 275℃, at -240℃--260℃ can maintain good mechanical properties and electrical insulation properties. The performance of polyethersulfone is between polysulfone and polysulfone. The load temperature is 203℃ and the long-term use temperature is -100℃--180℃. Polysulfone plastics can still maintain good electrical insulation performance in humid environments.

performance

1. Polysulfone is amber transparent solid material, with high hardness and impact strength, non-toxic, good heat and cold resistance and aging resistance, and can be used for a long time at -100--175 degrees. Resistance to corrosion of inorganic acid and alkali salts, but not to aromatic hydrocarbons and halogenated hydrocarbons. Polysulfone has high hardness, radiation resistance, good heat and cold resistance and self-breathing, which can be used for a long time at -100-175 degrees.

2. The wear resistance of the material can be greatly improved by glass fiber reinforcement modification.

3. Polysulfone can be modified with ABS, polyimide, polyether ether ketone and fluorine plastic to make polysulfone products, mainly to improve its impact strength and elongation, solvent resistance, environmental resistance, processing performance and electroplating ability. Such as PSF/PBT,PSF/ABS,PSF+ mineral powder.

4, polysulfone [1] can be used continuously in 300 °F steam. In 180°F water, the maximum pressure is 13.8MPa(static load) and 17.2 MPa(intermittent load). In order to maintain long-term transparency and impact resistance, the maximum pressure is 3.5MP(static load) and 6.9mpa (intermittent load) in 180 °F water. The lower the water temperature, the higher the pressure: for example, at 72°F, the maximum pressure is 20.7mpa static load), 24.7mpa (intermittent load). At room temperature 20.7MPa pressure, after 10000 h, the creep (strain) of polysulfone is only 1%. Under the stress of 210°F and 2.07MPa, the total strain is still less than 2% after 1 year. After long-term use at 300°F, the strength and modulus of the polysulfone increased by 10%, the insulation strength remained 90%, and the impact strength remained 70%. The tensile impact strength of polysulfone can reach 200. During the first few months of exposure to high temperatures, such as 300 °F, an annealing effect can reduce its performance value by 30%. But these properties remained constant over the two-year test period.

5, polysulfones have very good comprehensive electrical properties: high dielectric strength and volume resistivity despite very low permittivity and loss factors. And can be constant over a wide range of temperatures and frequencies (even microwave frequencies).

The polysulfone can be electroplated for nickel and copper and has a bond strength of 20lb/in.

The processing technology

1. Amorphous material, moisture absorption, water absorption rate of 0.2%-0.4%, must be fully dry before use, and prevent moisture absorption. Ensure that the water content is below 0.1%.

2. The molding performance is similar to PC, but the thermal stability is poor, and the decomposition begins to occur at 360 degrees.

3. Poor fluidity, fast cooling, suitable for high temperature and high pressure molding. The mold should have sufficient strength and stiffness, set a cold material well, the flow channel should be short, and the gate size should be 1/2-1/3 of the wall thickness of the plastic part

4. In order to reduce the internal stress of injection molded products, the mold temperature should be controlled at 100-140 degrees. After molding, it can take annealing treatment glycerol bath annealing treatment, 160 degrees, 1-5 minutes; Or take air bath 160 degrees, 1-4 hours. The annealing time depends on the size and wall thickness of the product.

5. Polysulfone is close to Newton body in the molten state, similar to polycarbonate, and the fluidity is more sensitive to temperature. Within 310 degrees to 420 degrees, the fluidity doubles with every 30 degrees increase in temperature. Therefore, the molding process is mainly improved by increasing the temperature.

application

Mechanical INDUSTRY: USED in the manufacture of clock shell and parts, photocopiers and cameras and other parts, as food machinery hot water valve, refrigeration system equipment, transmission parts, etc. After adding teflon or graphite and other wear-resistant fillers, polysulfone plastics can be used as bearings for high temperature loads, as well as piston rings, bearing cages, hot water measuring instruments, warm water pump pump bodies, impellers, etc.

Electronic and ELECTRICAL: It can be used in the manufacture of integral circuit boards of TV, audio and computer, and also can be used in the manufacture of electronic and electrical equipment shell, electroplating tank, oscilloscope sleeve and coil frame, capacitor film and wire, cable coating, various small precision electronic components. Polysulfone can be used as a C-grade insulation material to make a variety of high temperature resistant coil racks, switches, connectors, etc. Polyethersulfone can also be used as coil wire tube, coil frame, micro capacitor, etc. The glass fiber reinforced polyether sulfone can be used as silicon-controlled insulator, micro potential difference meter shell and integrated circuit socket.

Specification: Plate: Thickness x width =5 ~ 50mm x 620mm x 1000mm;

Bar: Diameter x length =5 ~ 150mm x 1000mm

Color: dark yellow translucent

Origin: Germany

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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