HOGARPRODUCTOSFuente de alimentaciónRTP PSU EMI 961 Polysulfone Plastic for EMI & ESD Protection

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  • RTP PSU EMI 961 Polysulfone Plastic for EMI & ESD Protection
  • RTP PSU EMI 961 Polysulfone Plastic for EMI & ESD Protection
  • RTP PSU EMI 961 Polysulfone Plastic for EMI & ESD Protection
  • RTP PSU EMI 961 Polysulfone Plastic for EMI & ESD Protection
  • RTP PSU EMI 961 Polysulfone Plastic for EMI & ESD Protection
  • RTP PSU EMI 961 Polysulfone Plastic for EMI & ESD Protection

RTP PSU EMI 961 Polysulfone Plastic for EMI & ESD Protection

PSU EMI 961 is a polysulfone plastic reinforced with 10% stainless steel fiber, offering EMI/RFI shielding and ESD protection. Suitable for electronics, telecom, medical, and industrial housings, with balanced mechanical strength and dimensional stability.

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  • Estructura del producto

What is Polysulfone Materials

 

RTP Company PSU EMI 961 is a specialty engineering polysulfone plastic based on polysulfone (PSU) reinforced with 10% stainless steel fiber. Its design focuses on electromagnetic shielding, radio frequency shielding, and electrostatic protection, making it suitable for applications with stringent requirements for both electrical performance and mechanical strength. The material combines excellent mechanical properties with excellent electrical conductivity, providing stable structural support and electromagnetic safety for electronics, communications, and industrial equipment.

PSU EMI 961

 

01 | Material Highlights and Procurement Value

 

Electromagnetic Shielding and Radio Frequency Protection

  ・Surface resistance: 10⁴–10⁵ Ω; volume resistance: approximately 10² Ω·cm.
  ・Effectively shields EMI/RFI interference, meeting the protection requirements of 5G, medical electronics, and industrial control applications.

Static Discharge and Safety Protection

  ・Passes ASTM D257 and ESD STM11.11 tests, enabling rapid static discharge.
  ・Effectively reduces the risk of failure in semiconductors and precision circuits during assembly and use.

Excellent mechanical and structural properties

  ・Tensile strength of 69 MPa and flexural modulus of 2620 MPa ensure the durability of housings and structural components.
  ・Impact strength (534 J/m without notches) meets structural stability requirements during transportation, assembly, and long-term use.

Processing and dimensional stability

  ・Suitable for injection moulding with a shrinkage rate of only 0.50–0.70%.
  ・Suitable for mass production of high-precision components, reducing moulding defects and rework costs.

Balanced functional and structural performance

  ・Combining the heat and chemical resistance of a PSU with the conductive and shielding properties of metal fibers.
  ・A single material meets both electrical functional and structural requirements, reducing the need for multiple materials.

 

02 | PSU EMI 961 polysulfone plastic Data Sheet

 

Comportamiento mecánicoCondiciónEstándarValorUnidad
AlargamientoNorma ASTM D63810.0%
Resistencia a la flexiónNorma ASTM D79097MPa
Módulo de flexiónNorma ASTM D7902620MPa
Impacto sin muescas Izod3.20mmASTM D4812534j/m
Impacto de muesca Izod3.20mmNorma ASTM D25653j/m
Resistencia a la tracciónNorma ASTM D63869MPa
Módulo de tracciónNorma ASTM D6382758MPa
Propiedad fisicaCondiciónEstándarValorUnidad
Contracción3.20mmNorma ASTM D9550.50~0.70%
DensidadNorma ASTM D7921.35gramos/cm³
Propiedades electricasCondiciónEstándarValorUnidad
Resistividad volumétricaNorma ASTM D2571E2Ω.cm
Resistividad superficialNorma ASTM D2571E5Ω
Resistividad superficialESD STM11.111E4Ω

 

03 | Recommended Applicable Industries and Applications

 

  ・Electronic and Electronics: Electromagnetic shielding enclosures, module housings, connectors

  ・Communications: 5G base station components, RF module housings

  ・Medical instruments: Protective housings for electrostatically sensitive devices

  ・Industrial equipment: Electrical control boxes, sensor packaging

Buyers in these applications often face issues such as signal interference, electrostatic damage, and insufficient structural strength. PSU EMI 961 was designed to address these pain points.

 

04 | Technical Process and Application Analysis

 

  ・Fiber Dispersion Process: Uniformly dispersing stainless steel fibers within the PSU matrix creates a stable conductive path, ensuring shielding performance persists over time.

  ・Injection Moulding Key Points: Moulding temperature and pressure must be controlled to ensure proper fibre orientation, maximising electromagnetic shielding effectiveness.

  ・Secondary Processing Adaptability: Machining, plating, or bonding can be performed to meet diverse product aesthetic and functional requirements.

The material's process advantages make it suitable not only for traditional electronic enclosures but also for complex geometries, lightweight modules, and precision components.

 

05 | Industry Trends and Application News

 

5G and Communications Equipment: With the increasing demand for electromagnetic shielding in 5G base stations and antenna systems, conductive plastics such as PSU EMI 961 and other polysulfone plastics are gradually replacing some metal housings to reduce weight and lower processing costs.

Medical Devices: European and American markets have stricter requirements for electromagnetic interference safety in high-end equipment such as MRI and CT scans, making PSU EMI 961 a potential material choice for housings and module packaging.

Semiconductor Manufacturing: ESD/EMI-grade polysulfone plastics are being adopted for safe workbenches and component carriers, reducing electrostatic breakdown and yield loss.

 

06 | Customer Applications and Feedback

 

Electronic component manufacturers: After adopting PSU EMI 961 as the RF module housing, the product passed electromagnetic compatibility testing on the first attempt, reducing the cost of additional shielding layers.

Medical device suppliers: Feedback indicates that the material maintains stable conductivity during long-term operation, avoiding signal drift and static electricity failures, thereby enhancing device reliability.

Industrial control system manufacturers: By selecting PSU EMI 961 as an alternative to metal materials, weight was reduced by 20%, and assembly efficiency was improved.

 

07 | FAQ - Common Questions from Purchasers

 

Q1: Does the conductivity of PSU EMI 961 decrease over time?
A: Stainless steel fibres are uniformly dispersed and tightly bonded to the matrix, ensuring stable performance over the long term.

Q2: What are its advantages over metal housings?
A: Lighter weight, more flexible processing, and higher molding precision, while maintaining electromagnetic shielding performance.

Q3: Can it replace other ESD/EMI materials?
A: Comparisons can be made based on resistance range and mechanical requirements, such as ESD C 980, EMI 962, ESD A 901, and ESD C 901. We can provide specific parameter comparisons and alternative solutions.

Q4: What are the procurement cycles and supply stability?
A: Juyuan maintains long-term partnerships with international channels and can arrange spot or bulk orders based on customer needs. We also provide logistics and customs clearance support.

plastic purchasing

 

08 | Recommended Materials for the Same Application

 

FabricanteModelo de productoDescripciónDensidadResistencia a la tracciónAlargamientoContracciónMódulo de tracciónNotched Izod ImpactMódulo de flexiónUnnotched Izod ImpactResistencia a la flexión
AmerichemESD C 901Material Feature: Electrostatic Protection1.37 g/cm³76 MPa1.5~3.0 %0.40~0.50 %5171 MPa43 J/m4826 MPa267 J/m121 MPa
AmerichemESD A 901Material Feature: Electrostatic Protection • Static Dissipation1.34 g/cm³69 MPa2.0~4.0 %0.40~0.50 %4826 MPa27 J/m4137 MPa374 J/m110 MPa
AmerichemEMI 962Material Feature: Electrostatic Protection • Electromagnetic Shielding • RF Shielding1.38 g/cm³69 MPa10.00%0.50~0.70 %2758 MPa53 J/m2620 MPa427 J/m97 MPa
AmerichemESD C 980Material Feature: Electrostatic Protection1.28 g/cm³121 MPa2.50%0.05~0.15 %7584 MPa64 J/m7584 MPa481 J/m197 MPa
AmerichemEMI 960.5Material Feature: Electrostatic Protection • Electromagnetic Shielding • RF Shielding1.29 g/cm³69 MPa10.00%0.50~0.70 %2758 MPa53 J/m2620 MPa534 J/m97 MPa

Polysulfone Materials

 

09 | Why choose Juyuan as your supplier?

 

  ・With 24 years of international trade experience, we are familiar with the certification and customs clearance requirements of various countries.

  ・Multi-channel supply guarantees reduce procurement risks and ensure stable delivery.

  ・Professional technical support provides material performance analysis, alternative material recommendations, and processing guidance.

  ・Long-term partnerships assist buyers with cost optimization and market trend analysis.

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