Glass modified polypropylene
Glass modified polypropylene is a high-performance composite material reinforced with glass fibers. This modification improves PP’s structural integrity while maintaining its lightweight nature. Glass modified PP is available in two primary types: long glass fiber polypropylene (LGFPP) and short glass fiber polypropylene (SGFPP).
- Long glass fiber–reinforced PP (LGF PP) contains 10–50 mm continuous glass fibers that interlock throughout the matrix. This structure delivers excellent impact, creep and fatigue resistance, along with enhanced thermal stability. LGF PP is typically used in demanding structural applications such as automotive bumpers, dashboard supports and seat frames, as well as in industrial equipment and high‑performance sporting goods.
- Short glass fiber–reinforced PP (SGF PP) incorporates uniformly dispersed glass fibers shorter than 1 mm. The fine dispersion boosts rigidity, mechanical strength and dimensional stability, while also simplifying processing. SGF PP finds common use in electrical housings, appliance components and precision‑molded industrial parts.
Both LGF PP and SGF PP offer improved thermal stability, exceptional impact performance, a lightweight yet strong structure, and serve as cost-effective alternatives to metal.
Supply Various Grades of Glass modified PP pellets
| Grade No. | Manufactuer | MFI | Properties | Application |
| H1030 | SABIC | 8 | DOWNLOAD | Developed for E&E and automotive injection molded applications |
| H1025 | SABIC | 8 | DOWNLOAD | Developed for E&E and automotive injection molded applications |
| H1015 | SABIC | 15 | DOWNLOAD | Developed for E&E and automotive injection molded applications |
| H1200 | SABIC | 13 | DOWNLOAD | Injection molded applications |
| 8500C | SABIC | 10 | DOWNLOAD | Injection molding |
| 7451B | SABIC | 20 | DOWNLOAD | Injection molding |
| 8620A | SABIC | 21 | DOWNLOAD | Injection molding |
| 8620 | SABIC | 23 | DOWNLOAD | Injection molding |
| 8520U | SABIC | 25 | DOWNLOAD | Automotive exterior applications |
| 8611A | SABIC | 34 | DOWNLOAD | Injection molding |
| 8611P | SABIC | 37 | DOWNLOAD | Injection molding |
| CX03B81 | SABIC | 10 | DOWNLOAD | Aesthetic automotive interior parts |
| 9712 | SABIC | 14 | DOWNLOAD | Automotive interior applications |
| CX0281 | SABIC | 15 | DOWNLOAD | Aesthetic automotive interior parts |
| 3720E | SABIC | 18 | DOWNLOAD | Non – aesthetic automotive interior parts |
| 9120 | SABIC | 21 | DOWNLOAD | Aesthetic automotive interior parts |
| G3240A | SABIC | 11 | DOWNLOAD | Under – the – hood and structural applications |
| G3230A | SABIC | 12 | DOWNLOAD | Designed to combine a good performance profile with fast processing |
| G3230AE | SABIC | 12 | DOWNLOAD | Combines good performance profile with fast processing, low emission values |
| G3220A | SABIC | 17 | DOWNLOAD | Combines a good performance profile with fast processing |
| G3135X | SABIC | 1.2 | DOWNLOAD | Air inlet manifolds |
| G3225UX | SABIC | 3 | DOWNLOAD | Pool filter housings |
| 55T1040 | SABIC | 3 | DOWNLOAD | General purpose injection molding applications |
| 55T1030 | SABIC | 4 | DOWNLOAD | dashboard carriers and other dashboard components |
| S3625 | SABIC | 6 | DOWNLOAD | Automotive interior applications |
| 15T1030 | SABIC | 6 | DOWNLOAD | Under – the – hood such as heating, ventilation and air conditioning housings |
| 15T1020 | SABIC | 7 | DOWNLOAD | Under – the – hood such as heating, ventilation and air conditioning housings |
| 31T1010 | SABIC | 11 | DOWNLOAD | General purpose injection molding applications |
| G3230X | SABIC | 12 | DOWNLOAD | Under – the – hood and structural applications |
| 37T1020 | SABIC | 13 | DOWNLOAD | Specially developed for automotive interior parts such as column cladding and door panels |
| 19T1020 | SABIC | 18 | DOWNLOAD | General purpose injection molding applications |
| 19T1040 | SABIC | 18 | DOWNLOAD | Injection molded applications requiring a very high modulus and high thermal stability |
| 19T1030 | SABIC | 19 | DOWNLOAD | General purpose injection molding applications |
| Grade No. | Manufactuer | MFI | Properties | Application |
| 30YH515 | SABIC | N/A | DOWNLOAD | Specially developed for electrical & electronic injection molded applications |
| 30YH530 | SABIC | N/A | DOWNLOAD | Developed for E&E and automotive injection molded applications |
| 20YM240 | SABIC | N/A | DOWNLOAD | Interior and under-the-hood applications such as door structures |
| 30YM240 | SABIC | N/A | DOWNLOAD | Interior and under-the-hood applications such as door structures |
| 30YM243 | SABIC | N/A | DOWNLOAD | Interior and under-the-hood applications such as door structures |
| 40YM240 | SABIC | N/A | DOWNLOAD | Interior and under-the-hood applications such as door structures |
| 40YM243 | SABIC | N/A | DOWNLOAD | Interior and under-the-hood applications such as door structures |
| 20YK270 | SABIC | N/A | DOWNLOAD | Automotive interior injection molded applications such as IP |
| 30YK270 | SABIC | N/A | DOWNLOAD | Automotive interior injection molded applications such as IP |
| 60YM240 | SABIC | N/A | DOWNLOAD | Specially developed for dilution with SABIC PP homopolymer |
| 60YM241 | SABIC | N/A | DOWNLOAD | Specially developed for dilution with SABIC PP copolymer |
| 60YK270 | SABIC | N/A | DOWNLOAD | Specially developed for dilution with SABIC PP copolymer |
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Glass Modified Polypropylene FAQs
What are the mechanical properties of Glass Modified Polypropylene
Tensile Strength: LGFPP typically has a tensile strength of 50-80 MPa, whereas SGFPP is around 30-60 MPa.
Flexural Modulus: LGFPP can reach a flexural modulus of 6,000-8,000 MPa, while SGFPP is about 3,500-5,000 MPa.
Impact Resistance: LGFPP has better impact resistance, with notched Izod impact values ranging from 5-10 kJ/m², while SGFPP values are typically around 3-6 kJ/m².
These mechanical properties make Glass Modified PP suitable for structural and high-performance applications.
What are the applications of Glass Modified Polypropylene
Glass Modified PP is used in various industries:
Automotive: Structural components like bumpers, dashboards, and seat frames.
Electronics: Housings and components that require thermal stability and impact resistance.
Consumer Goods: Household appliances and molded parts that need enhanced rigidity.
Piping: For industrial pipes and fittings requiring strength and chemical resistance.
What is the thermal resistance of Glass Modified Polypropylene
Glass Modified PP typically has a heat deflection temperature (HDT) of about 100-120°C for SGFPP and 130-150°C for LGFPP. This makes it suitable for applications exposed to moderate to high temperatures.
What are the chemical resistance properties of Glass Modified Polypropylene
Glass Modified Polypropylene is highly resistant to a range of chemicals, including:
Acids: Good resistance to diluted acids like sulfuric acid (H2SO4) and hydrochloric acid (HCl).
Bases: High resistance to alkalis such as sodium hydroxide (NaOH).
Solvents: Resistant to oils and most organic solvents, although some strong polar solvents can affect its properties.
How does Glass Modified Polypropylene perform in terms of flammability
Glass Modified PP has a UL 94 flammability rating of V-2 for SGFPP and V-0 for LGFPP, indicating it is self-extinguishing and exhibits low flame spread in case of fire. However, it’s not entirely flameproof and should be used with caution in applications where high fire resistance is critical.
How does Glass Modified Polypropylene perform in injection molding
Injection Molding Shrinkage: Typically around 0.5% to 1.5% for both LGFPP and SGFPP, depending on the fiber content and molding conditions.
Molding Temperature: Recommended injection molding temperatures are generally in the range of 200°C to 250°C for both types of Glass Modified PP.