Overview
30% Glass Fiber Reinforced Plastic is an engineered composite where glass fibers constitute 30% of the material's weight, embedded in a thermoplastic or thermoset matrix. The fibers significantly enhance mechanical properties, making it a preferred choice for structural applications. Common base resins include polyamide (PA), polypropylene (PP), and polybutylene terephthalate (PBT). The material combines the processability of plastics with the strength of glass fibers, resulting in improved stiffness, impact resistance, and heat deflection temperature. It is widely adopted in industries demanding lightweight alternatives to metals without compromising performance.
Physical and Chemical Properties
The addition of 30% glass fibers increases tensile strength by 50-100% compared to unfilled resins, with typical values ranging from 100-200 MPa. Flexural modulus also improves, often exceeding 7 GPa. Thermal stability is enhanced, with heat deflection temperatures (HDT) reaching 200°C or higher for high-performance resins. Chemically, the material exhibits resistance to oils, fuels, and many acids, though alkali exposure can degrade glass fibers. Electrical insulation properties remain intact, making it suitable for electronic components. Moisture absorption varies by resin; for example, reinforced PA6 requires drying before processing.
Main Applications
In automotive engineering, this material is used for under-the-hood components like throttle bodies, intake manifolds, and radiator end tanks due to its heat resistance and lightweight properties. Electrical applications include circuit breakers, connectors, and motor housings where dimensional stability is critical. Industrial uses encompass gears, bearings, and pump housings, where the material's wear resistance reduces maintenance. Consumer goods like power tool housings and sporting equipment also benefit from its durability. The aerospace sector employs it for non-structural interior parts to reduce weight.
Safety and Storage
Machining or grinding this material generates fine glass fiber dust, requiring NIOSH-approved respirators and proper ventilation. Finished parts are generally safe but may have sharp edges from fiber exposure at cut surfaces. Raw pellets must be stored in moisture-proof containers, especially for hygroscopic resins like PA. Prolonged UV exposure can degrade the polymer matrix, so outdoor applications often require UV stabilizers. Fire resistance varies by resin; halogen-free formulations are preferred for enclosures.
B2B Procurement Guide
When sourcing 30% glass fiber reinforced plastics, specify the base resin (e.g., PA66 GF30) and any additives like flame retardants or UV stabilizers. Key certifications may include UL94 for flammability and ISO 9001 for quality management. Suppliers typically offer compounded pellets for injection molding or extrusion. MOQs vary from 500 kg to several tons, with lead times of 2-6 weeks. Request material datasheets with tested mechanical properties and processing guidelines. For custom formulations, expect longer development cycles and higher costs.
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