PSU sheet solid polysulfone plastic sheet PSU sheet

Introduction to PSU board

 

Polysulfone (PSF or PSU) is a thermoplastic resin with links in the main chain of the molecule. There are two kinds of Polysulfone, namely common bisphenol A type PSF (commonly known as PSF) , polyaromatic sulfone and polyether sulfone. Polysulfone (PSU) plastics are macromolecule containing sulfone groups and aromatic nuclei in the main chain of macromolecules. It is a linear thermoplastic engineering plastic, with excellent heat resistance, oxidation resistance, radiation resistance, as well as electrical insulation, outstanding creep resistance and high physical and mechanical properties, excellent resistance to chemical corrosion, in addition to strong solvents, sulfuric acid, nitric acid other chemical reagents stable. According to its main chain molecular structure, polysulfone plastics can be divided into polysulfone, polysulfone and polyethersulfone. Generally speaking, polysulfone has a heat deformation temperature of 175 ° C and can be used between -100 ° C and -150 ° C for a long time. Polysulfone is one of the best heat-resistant engineering plastics. Its heat resistance is comparable to that of thermosetting polyimide, with a load deformation temperature of 275 â ° C and a long-term service temperature of 275 â ° C, at -240 ° C--260 ° C, it can keep good mechanical properties and electrical insulation properties. The performance of PES is between PES and PES, the load temperature is 203 ° C, the long-term use temperature is -100 ° C--180 ° C. Polysulfone plastics can maintain good electrical insulation in a humid environment. Performance 1, Polysulfone is amber transparent solid material, high hardness and impact strength, non-toxic, heat and cold resistance, good aging resistance, can be used in -100 -175 degrees for a long time. Resistant to inorganic acid, alkali and salt corrosion, but not to aromatic hydrocarbons and halogenated hydrocarbons. Polysulfone has high hardness, radiation resistance, heat and cold resistance, and self-reliance, can be used in -100 -175 degrees for a long time. 2. The wear resistance of the material can be greatly improved by glass fiber reinforced modification. Polysulfone can be modified with ABS, polyimide, Peek and fluoroplastics, it is mainly to improve its impact strength and elongation, solvent resistance, environmental resistance, processability and electroplating. Such as PSF/PBT, PSF/ABS, PSF + mineral powder. 4. Polysulfone can be used continuously in 300 ° F steam. In 180 ° F water, the maximum pressure is 13.8 MPA (static load) and 17.2 MPa (intermittent load) . In order to keep the long-term transparency and impact resistance unchanged, the maximum pressure bearing capacity is 3.5 MP -LRB-static load) and 6.9 mpa (intermittent load) in 18F ° f water. The lower the water temperature, the higher the pressure: for example, at 72 ° F, the maximum pressure is 20.7 mpa static load and 24.7 mpa intermittent load. The creep (strain) of polysulfone is only 1% after 10000h at 20.7 mpa pressure at room temperature. Under the stress of 210 ° F and 2.07 MPA, the total strain is still less than 2% after one year. After long-term use at 300 ° F, the strength and modulus of polysulfone are increased by 10% , the insulation strength is maintained by 90% and the impact strength is maintained by 70% . The tensile impact strength of polysulfone can reach 200. During the first few months of exposure to high temperatures, such as 300 ° F will produce an annealing effect that reduces its performance by 30% . But these properties remained constant over a two-year testing period. 5. Polysulfone has very good integrated electrical properties: although the dielectric constant and loss factor are very low, it still has high dielectric strength and volume resistivity.