GFRP / GFK (Glass Fiber Reinforced Epoxy) vs PP-C (Polypropylene Copolymer): 0% composition overlap. Significantly different materials serving different application areas.
GFRP / GFK (Glass Fiber Reinforced Epoxy) vs PP-C (Polypropylene Copolymer)
Side-by-side chemical composition and mechanical property comparison.
Overview
GFRP / GFK (Glass Fiber Reinforced Epoxy)
Glass fiber reinforced epoxy composite — the cost-effective structural composite for industrial, marine and construction applications. E-glass fiber in epoxy matrix. Unidirectional: UTS ~1000 MPa, E ~40 GPa. Quasi-isotropic layup: UTS ~300 MPa, E ~18 GPa. Density 1.8–2.1 g/cm³. Electrically insulating (unlike CFRP). Used for boat hulls, wind turbine blades, chemical tanks/pipes, architectural panels, ladders, gratings, automotive body panels and electrical insulation structures.
PP-C (Polypropylene Copolymer)
Polypropylene copolymer (random or block) — better impact resistance at low temperatures than PP homopolymer (PP-H). Random copolymer: excellent clarity for packaging. Block copolymer: high impact for automotive bumpers, containers, and household appliances. Trade names: Moplen (LyondellBasell), Hostalen (LyondellBasell). THE automotive interior/exterior polymer alongside ABS.
| GFRP / GFK (Glass Fiber Reinforced Epoxy) | PP-C (Polypropylene Copolymer) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ASTM D3039 | ISO 1133 |
Chemical composition (wt%) — Pro
| Element | GFRP / GFK (Glass Fiber Reinforced Epoxy) | PP-C (Polypropylene Copolymer) | Overlap |
|---|---|---|---|
| Epoxy Resin Matrix | 30–45% | — | — |
| Glass Fiber Reinforcement | 55–70% | — | — |
| Base Polymer (Polypropylene) | — | 85–95% | — |
| Ethylene Co-Monomer | — | 5–15% | — |
Mechanical properties — Pro
| Property | GFRP / GFK (Glass Fiber Reinforced Epoxy) | PP-C (Polypropylene Copolymer) | Unit |
|---|---|---|---|
| Tensile Strength | 900–1100 | — | MPa |
| Tensile Modulus | 38–45 | — | GPa |
| Density | 1.8–2.1 | — | g/cm³ |
| Fiber Volume Fraction | |||
| Glass Transition Temp (Tg) | |||
| Water Absorption (24h) | |||
| Tensile Strength | |||
| Elongation | |||
| Elastic Modulus | |||
| Density | |||
| Melting Point |
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GFRP / GFK (Glass Fiber Reinforced Epoxy) and PP-C (Polypropylene Copolymer) have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is GFRP / GFK (Glass Fiber Reinforced Epoxy) the same as PP-C (Polypropylene Copolymer)?
GFRP / GFK (Glass Fiber Reinforced Epoxy) and PP-C (Polypropylene Copolymer) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace GFRP / GFK (Glass Fiber Reinforced Epoxy) with PP-C (Polypropylene Copolymer)?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between GFRP / GFK (Glass Fiber Reinforced Epoxy) and PP-C (Polypropylene Copolymer)?
The main differences are in the following elements: overall alloying content. GFRP / GFK (Glass Fiber Reinforced Epoxy) is a Polymers grade, while PP-C (Polypropylene Copolymer) is a Polymers grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.