Polycarbonate Glass-Filled Granules Properties, Uses, and Applications
                     Polycarbonate Glass-filled 
Granules: Properties, Uses And 
Applications
What Are Glass-Filled Granules?
Glass-filled granules are produced by adding glass fibers to a 
base polymer resin, typically engineering thermoplastics such as 
polycarbonate. The glass fibers are usually in the form of short 
fibers or glass beads that are evenly distributed throughout the 
polymer matrix. This combination of polymer and glass fibers 
creates a composite material with superior mechanical properties 
compared to the base polymer alone.
 
Popular commercial options include PC FR V0, 943A, and 945, 
widely used in automotive and electrical applications for their 
flame-retardant and mechanical properties.
Types of Glass-Filled Granules
Glass-filled granules can be categorized based on the type and volume of reinforcement added:
 
• Short Glass Fiber-Reinforced Granules
Improve rigidity and tensile strength while maintaining ease of processing. Grades like PC 10% GF FR, PC 20% GF 
FR, and PC 30% GF FR are excellent examples.
• Long Glass Fiber-Reinforced Granules
These provide superior impact resistance and are often chosen for structural applications requiring high durability.
• Glass Bead-Reinforced Granules
Preferred for applications that demand better surface finish and reduced warpage.
• Glass-Filled Granules with Different Polymer Resins
Polycarbonate-based formulations such as 945U, 945AU, and PC FR GRANULE deliver excellent flame retardancy 
along with enhanced strength.
Key Properties of Glass-Filled Granules
Adding glass fibers to polymers enhances several critical characteristics:
 
• Increased Strength and Rigidity
Especially in grades like PC 30% GF FR and PC 20% GF FR, which are used in load-bearing components.
• Improved Dimensional Stability
Ensures minimal deformation under thermal or mechanical stress. Grades like 940A and 945AU are 
commonly used in precision parts.
 
• Enhanced Thermal Stability
Flame-retardant grades like PC FR V0 and 943A are ideal for high-heat environments, particularly in electrical 
housings and connectors.
 
• Better Wear and Abrasion Resistance
Short glass fiber grades such as PC 10% GF FR offer good performance in moving parts or friction-heavy 
applications.
• Reduced Creep and Fatigue
Allows prolonged mechanical use without material degradation. Examples include 945 and 945U.
• Low Thermal Expansion
This makes materials like PC 30% GF FR suitable for high-precision applications.
 
• Improved Electrical Properties
Grades like PC FR GRANULE and 940A offer superior dielectric strength and flame resistance.
 
• Improved Surface Finish
Especially in applications requiring visible or aesthetic finishes, short-fiber filled grades maintain a cleaner surface 
appearance.
Manufacturing Process of Glass-Filled Granules
The manufacturing process typically includes:
• Preparation of Glass Fibers
Ensuring consistent sizing and surface treatment compatible with PC resins such as 945 and 945U.
• Blending with Polymer Resin
Using compounding equipment to evenly disperse glass fibers in grades like PC 20% GF FR and 
PC FR GRANULE.
• Pelletization
The filled resin is cooled and cut into granules for convenient processing and uniform feedstock.
• Quality Control
Testing is conducted for tensile strength, flame retardancy, & flow rate. Grades like 943A and 940A are 
quality-verified for consistency in high-demand applications.
Advantages of Glass-Filled Granules
Glass-filled polymers offer several performance and commercial benefits:
• Cost-Effectiveness
Using high-performance grades like 945AU or PC FR GRANULE can reduce long-term costs by extending part 
life.
• Improved Performance
For applications needing structural integrity and thermal endurance, grades like PC 30% GF FR or 943A are 
ideal.
• Design Flexibility
Available in various fiber loadings and flame-retardant formulations, such as PC 10% GF FR, PC FR V0, and 
940A.
• Durability
Especially in mechanical assemblies or electronics, grades like 945 and 945U ensure long-term performance in 
demanding environments.
Applications Of Glass-filled Granules
Glass-filled compounds are widely used in:
 
• Automotive Industry
Components like brackets and housings use grades such as PC 20% GF FR, PC 30% GF FR, and 945AU. 
• Electronics and Electrical Industry
Flame-retardant materials like PC FR V0, 943A, and 945U are used in plugs, switches, and housings.
• Industrial Applications
Equipment enclosures and machine parts benefit from 940A, PC 10% GF FR, and 945 for their toughness and 
thermal resistance.
• Consumer Goods
Products requiring both aesthetic appeal and strength often use PC FR GRANULE and PC 10% GF FR.
• Aerospace Industry
Lightweight and flame-retardant grades like 945AU and PC 30% GF FR are ideal for structural parts.
• Medical Devices
Components requiring high precision and compliance use formulations like 945, 945U, and 943A.
Conclusion
Glass-filled granules are a highly effective solution for applications requiring high performance 
under stress, heat, and wear. From PC FR V0 to PC 30% GF FR, these materials bring 
enhanced mechanical properties, thermal stability, and flame retardancy to a wide range of 
industries.
 
Partner with Kapoor Sales Corporation today to explore our advanced range of 
polycarbonate and glass-filled granules tailored to your industrial needs.
KAPOOR SALES 
CORPORATION
J-424, 1st Floor, Shankar Road,
New Rajinder Nagar, New Delhi – 110060
Phone: 011-28741663/64
E-mail: [email protected]
Web:www.kapoorsales.com
HOUSE OF PLASTICS
Plot No. 72, Sector 18, Gurugram,
Haryana – 122015
Phone: 0124-4017794
E-mail: [email protected]