Introduction of PPS and Alloys

PPS is polyphenylene sulfide. It has the advantages of hard and brittle, high crystallinity, flame retardant, good thermal stability, high mechanical strength, excellent electrical properties, and strong chemical resistance. According to different manufacturing methods, PPS is divided into cross-linked type and linear type. PPS is one of the best heat-resistant varieties in the engineering plastics department. The heat distortion temperature of the glass fiber modified material is generally greater than 260 degrees, and the chemical resistance is second only to polytetrafluoroethylene. In addition, it also has low molding shrinkage, low water absorption and good fire resistance. Good vibration and fatigue resistance, strong arc resistance, etc., especially at high temperatures. It still has excellent electrical insulation under high humidity. However, its shortcomings are high brittleness, poor toughness, and low impact resistance. After modification, the above shortcomings can be overcome and very excellent comprehensive performance can be obtained.

The alloy PA/PPS has excellent mechanical properties, weather resistance and plasticity, and can be used to manufacture packaging materials, containers, pipes and their accessories. Observation by electron microscope shows that PPS is the continuous phase and PA is the dispersed phase in the alloy.

The blending of PBT resin and PPS can not only maintain the original excellent performance of PPS, but also achieve the purpose of toughening. PBT and PPS are incompatible. After blending, the two components crystallize in their respective micro-zones. However, the addition of PBT can significantly increase the melt viscosity of PPS. The greater the content of PBT, the greater the melt viscosity and the worse processing performance. With the decrease of PBT components, the integrity of PBT crystallization is affected. When PBT/PPS = 80/20, PBT is the continuous phase and PPS is the dispersed phase. SEM observation revealed that the two phases of PBT and PPS are clearly separated, with a clear interface.

Future work focuses on the specific application of polymer compatibility research in PPS alloy materials, such as the use of semi-interpenetrating polymer network theory and technology to prepare high-performance PPS alloy materials, and focus on the development of better comprehensive properties and certain These special properties and low-cost PPS alloy materials and products form a variety of series of PPS alloy materials.