PPS-Solvay Ryton R-4-200
To maintain stable dielectric insulation and extreme mechanical rigidity under high-voltage EV and severe under-the-hood thermal loads, Syensqo’s Ryton R-4-200 stands as the premier 40% glass fiber reinforced polyphenylene sulfide (PPS) compound. Featuring a high specific gravity of 1.68 and an exceptional heat deflection temperature of 265°C, this high-performance grade achieves an outstanding UL 94 V-0 and 5VA flammability rating at 1.6mm. Jucheng Precision, under IATF 16949 and ISO 9001 quality systems, specializes in high-precision molding of Ryton R-4-200. Utilizing S136 stainless steel tooling and pressurized oil mold heating, we control its anisotropic shrinkage (0.2%-0.5%) to deliver flash-free electrical components verified by Zeiss CMM.
Ryton R-4-200 Engineering Specifications & Dielectric Purity
Ryton® R-4-200 is a 40% glass fiber reinforced semi-crystalline Polypropylene/Polyphenylene sulfide compound engineered by Syensqo, certified to deliver unmatched mechanical stiffness and high arc-tracking resistance:
| Physical & Electrical Parameter | Ryton R-4-200 Typical Value | Molding & End-Use Advantage |
|---|---|---|
| Specific Gravity | 1.68 g/cm³ (ASTM D792) | High specific weight provides extreme dimensional stability, perfectly replacing dynamic cast aluminum and zinc brackets. |
| Dielectric Strength | 22 kV/mm (ASTM D149) | Delivers outstanding electrical insulation resistance and arc tracking resistance, preventing voltage leaks in EV systems. |
| Heat Deflection (HDT) | 265 °C (DAM @ 1.80 MPa) | Retains mechanical properties and shape under high thermal stress in automotive under-the-hood and plumbing manifolds. |
Specialized Component Process Configurations for Ryton R-4-200
With its high-stiffness reinforcement and robust polymer melt flow, Ryton R-4-200 fills intricate structural cavities consistently:
| Molding Technology Class | Process Compatibility & Setup Details |
|---|---|
| Precision Electrical Connectors | Excellent. Highly suitable for multi-pin automotive electrical blocks, sensor plugs, high-voltage terminals, and heavy-duty coil bobbins. |
| Heavy-Duty Windings & Bobbins | Excellent. High tensile modulus prevents part deformation or deflection under high copper wire tension on multi-slot motor bobbins. |
| High-Aesthetic Appliance Trims | Good. Easy-release formulation combined with optimized tooling results in premium surface finishes with minimized glass fiber visibility. |
PPS-Solvay Ryton R-4-200 Tooling & Process Optimization Guide
Molding a 40% glass-fiber filled semi-crystalline resin like Ryton R-4-200 requires strict moisture control and optimized gating to prevent abrasive tool wear and warpage:
Hardened S136 Tooling (Abrasive Wear Prevention)
40% short glass fibers act as an abrasive medium under high injection speeds. Jucheng’s tooling division prevents cavity erosion by constructing molds with premium S136 stainless tool steel hardened to 48–52 HRC and machined on our 5-axis CNCs, ensuring long-term parting line precision and flash-free parts.
Anisotropic Shrinkage & Warpage Control
Ryton R-4-200 shrinks much less along the flow (0.20%) than perpendicular to it (0.50%). We use Moldflow simulation during our free DFM review to balance gate locations, aligning glass fibers uniformly to prevent component warping and out-of-tolerance dimensions.
Desiccant Drying Protocol (Hydrolysis Prevention)
PPS is highly sensitive to moisture at high melt temperatures. Wet molding results in rapid hydrolytic chain cleavage, causing severe splay, gas bubbles, and a major drop in impact strength. We desiccant dry Ryton R-4-200 resin at 135°C–150°C (275°F–302°F) for 2–4 hours, keeping moisture below 0.02%.
Balanced Cooling Loops (Conformal Cooling)
To prevent warping in complex electrical frames, we machine balanced, conformal cooling circuits directly into core blocks to speed up heat dissipation, further reducing cycle times and preventing thermal warpage.
Key Application Fields for PPS-Solvay Ryton R-4-200
- Automotive Powertrains & Lighting (IATF 16949): High-voltage EV battery connectors, ignition coil bobbins, thermostat sensor housings, headlamp bezel assemblies, and electric water pump housings.
- Electrical Components & Smart Grids: Industrial circuit breakers, heavy-duty relay sockets, terminal blocks, smart power meters, and coil bobbins.
- Industrial Appliances & Fluids: Heavy-duty appliance handles, outdoor spotlight housings, high-temperature indicator bezels, and structural chemical valve housings.
Properties
| Density | 1.68 g/cm³ |
| Tensile Strength | 185 MPa |
| Tensile Elongation at Break | 1.5 % |
| Flexural Strength | 269 MPa |
| Flexural Modulus | 14,000 MPa |
| Izod Notched Impact Strength (23°C) | 91 J/m |
| Izod Unnotched Impact Strength (23°C) | 640 J/m |
| Rockwell Hardness (M-Scale) | 100 - |
| Melting Temperature | 280 °C |
| Heat Deflection Temperature (HDT @ 1.80 MPa) | 265 °C |
| Linear Mold Shrinkage (Flow Direction) | 0.2 % |
| Linear Mold Shrinkage (Cross Direction) | 0.5 % |
| Dielectric Strength (3.18mm) | 22 kV/mm |
| Volume Resistivity | 1.0E+16 Ohm-cm |
| Maximum Part Size | 800 x 600 mm |
| Minimum Part Size | 1 x 1 mm |