40% Glass Filled PPS Bobbin

2 month ago

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6 year

Product details

The "GF40" in PPS rod GF40 indicates that the polyphenylene sulfide (PPS) rod contains 40% glass fiber reinforcement. The addition of glass fiber significantly improves the mechanical strength, rigidity, and dimensional stability of PPS, maintaining its shape even under high-temperature and high-fatigue conditions. Compared to pure PPS, GF40 reinforced PPS rods exhibit significantly improved tensile strength, flexural strength, and creep resistance, while maintaining a heat distortion temperature exceeding 260°C. Furthermore, it retains good chemical resistance and electrical insulation, making it suitable for demanding applications such as high-temperature mechanical components, electrical structures, pump and valve fittings, and chemical equipment.

Glass fiber reinforced PPS is made by adding glass fiber to polyphenylene sulfide (PPS) resin, further enhancing its performance and making it particularly suitable for working in harsh environments.

**Strong High Temperature Resistance:** Ordinary PPS can withstand long-term use at temperatures up to 240℃, while the addition of glass fiber increases the heat distortion temperature to over 260℃. It can even maintain more than 80% of its strength after being exposed to 200℃ for 1000 hours, without easily softening or deforming.

**Mechanical Strength Approaching Metal:** The addition of glass fiber significantly improves tensile and flexural strength, increasing rigidity and allowing it to replace some metal structural components, achieving lightweighting. For example, its density is only 1/3 to 1/4 that of metal.

**Good Corrosion Resistance and Insulation:** It resists the corrosion of strong acids, strong alkalis, and organic solvents, and also possesses excellent electrical insulation properties. Its performance remains stable even in high humidity environments, with extremely low water absorption (below 0.03%).

Main Applications

Thanks to the aforementioned characteristics, glass fiber reinforced PPS is a mainstay in multiple industrial sectors, especially in applications requiring heat resistance and lightweight construction.

* **Automotive Industry:** This is the largest application area, accounting for approximately 45%. It's commonly used in engine peripheral components (such as intake manifolds and water pump impellers), transmission gears, and sensor housings, capable of withstanding high temperatures and oil contamination.

* **Electronics and Electrical Engineering:** Accounting for approximately 30%, it's used to manufacture precision connectors, coil frames, transformer housings, etc., due to its good dimensional stability and reliable insulation in high-temperature welding and humid environments.

* **Chemical and Mechanical Industries:** Used in valves, pump bodies, pipelines, and other components exposed to corrosive media, replacing traditional metals or ceramics to reduce weight and maintenance costs.

* **Other Applications:** Also includes aerospace components, high-temperature resistant parts for home appliances (such as microwave oven turntable brackets), and battery housings and charging pile connectors for new energy vehicles.

What to Pay Attention to When Processing and Selecting Types

If you plan to purchase or process this material, you need to select the appropriate specifications and process parameters based on your specific needs.

**Glass Fiber Content Selection:** Common specifications include PPS-GF20, PPS-GF30, and PPS-GF40. Higher glass fiber content results in better strength and rigidity, but may reduce flowability. Generally, a 30% content is commonly used.

**Long vs. Short Glass Fibers:** Short glass fiber reinforcement is lower in cost and easier to process; long glass fiber reinforcement offers better toughness, higher impact strength, and a heat distortion temperature up to 275℃, making it suitable for parts requiring higher fatigue resistance and dimensional stability.

**Injection Molding Process Parameters:** Processing temperatures are typically higher, with barrel temperatures between 300-350℃ and mold temperatures controlled between 120-180℃. It is recommended to dry the material at 140℃ for 4 hours before injection molding to prevent moisture absorption from affecting performance.

PPS 40% Glass Filled is the most recognized filled grade of PPS. It offers better dimensional stability and thermal performance than unfilled PPS and maintains its strength to above 425°F (220°C).

At the pinnacle of specialty engineering plastics, polyphenylene sulfide (PPS) reigns supreme, often referred to as "plastic gold." Glass-reinforced PPS, however, elevates this king of materials to the very peak of performance. The synergistic modification of glass fiber and mineral fillers gives it five core advantages: high modulus, high rigidity, low warpage, high temperature resistance, and chemical corrosion resistance, making it an irreplaceable key material in high-end manufacturing. Performance is its foundation. Glass-reinforced PPS has a heat distortion temperature exceeding 265℃ and can operate stably for extended periods in environments ranging from 220℃ to 240℃. Its flame retardant rating reaches UL94 V-0, passing stringent safety certifications without the need for additional flame retardants. Even more impressively, its low creep characteristics allow precision transmission components to maintain accuracy within 0.1mm, perfectly resolving the industry pain point of dimensional instability caused by material warpage.

In the high-end manufacturing sector, the stringent requirements for material performance have never ceased. Mingji's 40% glass fiber natural PPS stands out with its superior performance, becoming the ideal choice for numerous industries.

It boasts exceptional high-temperature resistance, with a heat distortion temperature exceeding 260℃ and a long-term operating temperature of 220-240℃. Even in extreme environments such as around engines and in high-temperature pipelines, it performs stably, ensuring reliable equipment operation. In terms of mechanical properties, its rigidity approaches that of metal, and its tensile strength is significantly improved. It can perfectly replace metal structural components, such as automotive bearing brackets and gearboxes, reducing weight while enhancing overall equipment performance.

Its dimensional stability is also excellent. The low shrinkage rate of glass fiber results in an extremely low coefficient of linear expansion, leading to high dimensional accuracy after molding. This makes it particularly suitable for applications requiring extremely high precision, such as precision electronic component packaging and connectors. Furthermore, it exhibits excellent chemical stability, remaining stable against acids, alkalis, salts, and organic solvents. It also boasts a built-in V0 flame retardant rating, eliminating the need for additional flame retardants and meeting the safety requirements of flame-retardant applications in chemical equipment and electronic appliances.

Applications speak louder than words. In the automotive industry, components such as ignition coil frames, water pump impellers, and thermostat housings withstand temperatures exceeding 200°C without deformation thanks to its properties. In the new energy vehicle sector, battery pack brackets and motor end caps achieve breakthroughs in both lightweight design and thermal management efficiency. In the electronics industry, connectors, IGBT power modules, and sensor housings withstand high-temperature welding and long-term thermal cycling. In the machinery and chemical industries, chemical pump impellers and valve seals have more than three times the lifespan due to its corrosion resistance.