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Polyether ether ketone (PEEK), polyether sulfone (PES), polyphenylene sulfide (PPS) is the three performance excellent in high temperature thermoplastic specialty polymer materials . The systematic study of the compatibility of the blends of PEEK / PES, PEEK / PPS and PPS / PES three groups , thermal properties, spinnability and its mechanical properties of the fibers . Compare the compatibility of the different components PEEK / PES blend , the mechanical properties of the heat resistance of a blend of fibers , both partially compatible systems , the PES added to improve the melt fluidity of PEEK , so that suitable for processing the temperature dropped to 365 ° C to 385 ° C ; good performance of the thermal stability of the blend , with the PEEK content increases , the thermal stability of the blend increased steadily ; to the analysis results of the mechanical properties of the fibers of the PEEK / PES , PEEK / PES 30/70 have good drawing properties and mechanical properties . PEEK / PPS blend when the temperature is below 350 ° C , melt extrusion difficulties, when the temperature is higher than 350 ° C , the phenomenon of degradation of PPS , and therefore not suitable for extrusion processing . Also compared the the different composition PPS / PES blend rheology, compatibility , heat resistance and the mechanical properties of the blend fiber . Found blend is pseudoplastic fluid , PPS added reduces the melt viscosity of the PES , suitable for processing temperature of 345 ° C ; PPS / PES blend has two glass transition temperatures , the two glass transition temperatures are close to each other the trend showed that the PPS / PES blend is partially compatible systems , wherein the PPS in the range of 20 % to 30% , the best compatibility . The heat resistance of the blend in the PPS content of 30% , preferably , can reach 513 ° C . Mechanical analysis when the PPS content in the range of 20 % to 30% when the blend better draft multiple minimum strength , elongation .
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