Name: China PBT LGF30 Precision Engineering Compound - LFT-G
Brand: LFT-G
SKU: 308554556

PBT LGF30 High-Stability Engineering Compound

30% long glass fiber • superior dimensional stability & electrical performance

What is PBT LGF30 Material?

LFT-Nylon 12-LCF30 Engineering Plastic

LFT-G^® PBT LGF30 is a reinforced engineering thermoplastic based on Polybutylene Terephthalate (PBT) combined with 30% long glass fibers. Developed for applications requiring stable dimensions, consistent mechanical performance, and reliable electrical properties, this compound provides a balanced solution for precision-molded components.

Unlike standard short-fiber PBT materials, the extended fiber structure in PBT LGF30 improves stress distribution throughout molded parts, helping reduce deformation, maintain dimensional accuracy, and enhance durability during repeated thermal and mechanical loading. This material is widely used for electrical components, connector systems, industrial housings, and precision functional parts where long-term reliability is essential.

🔹 Injection Molding 🔹 30% Glass Fiber 🔹 Black / Natural 🔹 HDT 200°C+

Material Performance Highlights

Reliable Electrical Insulation

PBT LGF30 offers stable electrical insulation performance and low moisture sensitivity, making it suitable for connectors, housings, and electrical components requiring long-term reliability.

Excellent Dimensional Stability

PBT LGF30 provides outstanding dimensional accuracy with reduced warpage and shrinkage variation. The long glass fiber structure helps maintain precise part geometry in complex components.

Low Moisture Absorption

The PBT resin matrix absorbs minimal moisture compared with many engineering plastics, helping maintain mechanical properties and dimensional consistency in humid environments.

Superior Heat Aging Resistance

PBT LGF30 maintains stable mechanical performance during long-term thermal exposure, supporting durable operation in electrical and industrial applications.

Enhanced Creep Resistance

Long glass fiber reinforcement improves load-bearing capability and resistance to deformation, enabling reliable performance for continuously stressed precision parts.

Performance Edge: Long Fiber vs. Short Fiber

Long glass fiber reinforced PBT (LGF30) delivers remarkable upgrades in mechanical retention and structural durability over standard short-glass-fiber PBT GF30. The curve below visualizes the performance gap across four core application metrics.

LFT-G^® PBT LGF30 vs. PBT GF30 (Short Fiber)

LFT-G® PBT LGF30 vs. PBT GF30 (Short Fiber)

Long-fiber advantage

PBT LGF30 maintains far higher performance retention under heat, long-term load and chemical exposure. Its integrated long-fiber network delivers outstanding creep resistance, dimensional precision and thermal-mechanical stability, outperforming short-fiber PBT GF30 especially in demanding automotive, electronic and industrial components.

Note: Values are relative performance indexes based on standard injection-molded specimen tests. Long-fiber data corresponds to LFT-G^® PBT LGF30 tested under standardized laboratory conditions.

Processing Guidelines – Injection Molding

Optimize your molding process with the following recommended parameters for LFT-G^® PA6 LGF30. Proper control ensures maximum fiber retention and part performance.

processing guide.png

Pre‑drying

2–4 hrs @ 80–90 °C

Use a dehumidifying dryer

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Melt Temperature

243 – 270 °C

Measured in barrel

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Mold Temperature

54 – 93 °C

Measured, not set

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Injection Pressure

69 – 124 MPa

Free-flow check valve

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Molding & Cooling

Full-round runners Ø 5–6 mm

Gate ≥ 5 mm · 100+ ton clamp

Process notes: Use a metering screw with 18:1–24:1 L/D ratio, 40% feeding, and a large open nozzle to minimize shear. Avoid overheating above 270 °C to prevent carbonization. Purge with PE or PP before shutdown; do not leave long-glass melt in the barrel.

Performance-Driven Cases

Electrical Components

Excellent electrical insulation and dimensional stability help maintain reliable performance in connector housings, terminal blocks, and sensor sockets, preventing deformation and ensuring stable electrical connections during long-term use.

Electronic Devices

Low moisture absorption and precision molding performance make it suitable for coil bobbins, switch housings, and electronic brackets, improving dimensional accuracy and reducing failures caused by environmental changes.

LFT-G Heavy Duty Gears

Industrial Equipment

High stiffness and creep resistance enable durable performance in gear housings, actuator components, and precision covers, supporting continuous mechanical loads while maintaining structural stability.

Thermal Control Systems

Superior heat aging resistance and consistent mechanical properties support pump components, valve housings, and control modules, ensuring reliable operation under continuous thermal stress.

FAQ

Q: What applications are suitable for PBT LGF30?

A: PBT LGF30 is commonly used for precision molded components such as electrical connectors, sensor housings, coil bobbins, terminal blocks, and industrial functional parts. It is suitable for applications requiring accurate dimensions, stable performance, and reliable long-term operation.

Q: Can PBT LGF30 be processed with standard injection molding equipment?

A: Yes. PBT LGF30 is designed for injection molding production and can be processed using standard thermoplastic molding machines. Proper processing conditions help achieve consistent fiber distribution, surface quality, and dimensional accuracy for complex parts.

Q: Why choose long glass fiber reinforced PBT instead of short fiber PBT?

A: Long glass fiber reinforced PBT provides improved fiber retention and a stronger internal reinforcement structure after molding. Compared with short-fiber PBT grades, it offers better resistance to deformation and improved load stability.

LFT team