PSU parts injection molding process Parameters Characteristics
Polyphenylene ether sulfone (PSU, also known as PSF) is a high-temperature, high-strength special engineering plastics, with high mechanical strength, electrical insulation properties and a certain degree of chemical resistance, especially thermal aging, creep resistance and dimensional stability is better.
PSU parts injection molding process characteristics:
1. PSU injection molded parts is an amorphous polymer, no significant melting point, molding temperature above 280 ℃, PSU products are transparent.
2. PSU injection molding melt fluidity is poor, fast cooling, it is difficult to eliminate the internal stress generated during the molding process.
3. Although PSU itself has a small water absorption rate, but in the PSU injection molding process, due to the high temperature and strong mechanical force, the presence of trace water will lead to the degradation of the melt. Therefore, it is necessary to dry the raw material before the injection molding process.
4. During the injection molding process, it is necessary to use higher injection pressure, which can make the density of the product increase and the shrinkage after molding decrease, so the mold itself needs to have a high precision level.
PSU processing parts application areas:
Mainly used in electrical and electronic, food and daily necessities, automotive, aviation, medical and general industry and other industries, can produce a variety of contactors, connectors, transformer insulation, SCR caps, insulating bushings, coil skeletons, alkaline electrolyzer pole frame, terminal boards, printed circuit boards, bushings, hoods, TV system parts, capacitor film, brush holders, alkaline battery boxes, wire and cable packaging. Polysulfone (PSU, also known as PSF) can also be used for shielding components, electrical devices, battery covers, internal and external parts of airplanes, external shielding of spacecraft, camera devices, lighting components, sensors.
PPSU precision injection molding process
PPSU polyphenylsulfone is a special engineering plastics, with high transparency and hydrolytic stability, can be injection molding processing molding process for various industries to provide compatible solutions, compared to PSU injection molded parts, PES injection molded parts and PEI injection molded parts more popular.
Relative to the cutting-edge industry, ordinary injection molding process precision has been unable to meet customer requirements, so PPSU precision injection molding process from the design requirements, manufacturing process, mold life, cost-effective and other aspects of making new changes.
PPSU precision injection molding requirements:
1. design requirements: ppsu products processing on the injection mold requirements are higher, in order to ensure that the production of high-precision, high-quality products, the dimensional accuracy of the mold and the surface finish and mold life put forward higher requirements.
2. Material selection: PPSU injection molding parts are usually selected high hardness, high wear-resistant materials to make molds, in order to meet the demand for long time and high intensity injection molding production.
3. Mold life: PPSU precision injection molds due to the production process to withstand higher pressure and wear, so the cycle life is relatively short, generally in the tens of thousands to hundreds of thousands of injection cycles.
4. Cost-effectiveness: PPSU precision injection molding process has higher requirements for the mold, the initial cost is large, and after mass production, the maintenance cost and the use of the cost is relatively small.
5. Application areas: PPSU precision injection molded parts for high-precision industries: aerospace, automotive parts, precision instruments, analytical testing and other high-precision, miniaturized parts and components have higher requirements of industrial supplies, ordinary injection molding is not up to this requirement.
Summarize
PPSU precision injection molding parts and ordinary injection molding processing is the main difference between its design requirements, manufacturing process, and application areas, PPSU precision injection molding is suitable for the product precision and quality control requirements of the field of extremely high, ordinary injection molding is suitable for a wide range of applications.
PPSU_PSU Medical Device Parts_Mold Development_Injection Processing
Polyphenylsulfone (PPSU) and Polysulfone (PSU) are high-performance specialty engineering plastics known for their excellent mechanical properties, thermal stability, chemical resistance, and biocompatibility.PSU has excellent heat resistance, good dimensional stability, and milk steam sterilizability. Making it ideal for applications that require prolonged exposure to high temperatures and harsh sterilization methods. On the other hand PPSU has high strength and stiffness, inherent flame retardancy and hydrolysis resistance, making it suitable for demanding applications in the medical sector
HONY Plastic offers mold making and precision injection molding solutions for plastic parts.
HONY Plastic has more than a decade of experience in the injection molding of polysulfone (PSU) and polyphenylsulfone (PPSU) high-temperature specialty engineering plastics, which face unique challenges due to their high melt temperatures and viscosities. As with the PEEK injection molding process, these high-temperature specialty engineering plastics require a thorough understanding of thermal (heating and cooling) control to ensure that flow is maintained during the filling phase and to control warpage after injection molding. Due to the high viscosity, minimum wall thicknesses and overall part complexity must be verified to ensure proper filling and packaging.DFM mold flow analysis for mold flow simulation can provide insight into these polymers filled with complex micro-geometries.
Overall, PSUs and PPSUs offer excellent performance characteristics that are exacerbated by the injection molding challenges of molding very small parts, requiring a consistently high level of expertise in this area. We specialize in the injection molding of special high temperature materials, providing prototyping, mold making, precision injection molding, and finished product assembly solutions to provide you with compatible plastic part solutions for your industry.
The application of PSU and PPSU in all kinds of medical devices:
Surgical instruments: PSU and PPSU are commonly used in the manufacture of surgical instruments such as handles, forceps and retractors due to their excellent mechanical properties, chemical resistance and biocompatibility. These materials ensure that surgical instruments maintain their integrity and performance even under repeated sterilization cycles and harsh operating conditions.
Diagnostic equipment: In diagnostic equipment such as blood analyzers, imaging equipment and diagnostic reagent containers, PSUs and PPSUs offer excellent clarity, chemical resistance and dimensional stability for accurate and reliable test results. In addition, their resistance to sterilization methods ensures the integrity of diagnostic equipment throughout its useful life.
Fluid handling components: Both PSUs and PPSUs are used in the manufacture of fluid handling components such as connectors, manifolds and valves in medical devices and analytical instruments. Their resistance to chemical attack, thermal stability and low extractable levels ensure fluid purity and prevent contamination, which is critical to maintaining the integrity of diagnostic and therapeutic procedures.
