Bonding Pastes and Fibro Sealants
Polres' bonding pastes and fibro sealants are high performance products specially developed for joining and repairing composite materials. They offer reliable solutions in GRP/fiberglass applications.
Bonding Pastes
Objective
It is primarily formulated for joining various substrates, especially composite materials such as GRP (Glass Reinforced Plastic) or fiberglass, and filling the gaps between them. They provide a strong structural bond.
Consistency
They typically have a pasty consistency, which makes them particularly easy to apply on vertical surfaces and prevents them from running or sagging. Many are thixotropic.
Composition
They are usually based on polyester, vinyl ester or epoxy resins. They can be unfilled or filled with materials such as calcium carbonate to increase strength and other properties.
Applications
It is common in special applications such as joining FRP/fiberglass parts, embedding inserts, as an auxiliary material in laminate construction, sandwich construction, repair work and installation of countertops and sinks.
Fibro Sealants
Objective
The term "fibro sealant" usually refers to a sealant reinforced with fibers, typically glass fibers. This reinforcement is a key feature.
Consistency
Similar to binding pastes, they have a viscous, pasty consistency suitable for application and gap filling. The inclusion of fibers can make them slightly harder or textured.
Composition
Similar to binding pastes, they are usually based on polyester or vinyl ester resins. The defining feature is the presence of short-cut glass fibers or other reinforcing fibers in the matrix.
Applications
They are used when higher strength and durability are required in bonding and filling applications, especially in composite repairs, joint reinforcement and in areas subject to stress or movement.
Comparison and Summary
Although both bonding pastes and fibro sealants are used for joining and filling, fibro sealants are a special type of bonding paste reinforced with fibers, most commonly fiberglass.
You can think of it like this: All fibro sealants are bonding pastes, but not all bonding pastes are fibro sealants. The prefix "fibro" specifically indicates the presence of fiber reinforcement.
This reinforcement gives fibro sealants enhanced mechanical properties, especially in terms of strength and impact resistance, making them suitable for more demanding applications compared to standard, non-fiber-reinforced bonding pastes.
Adhesive Pastes & Fiber-Reinforced Mastics
Polres adhesive pastes and fiber mastic are high-performance products specifically developed for joining, repairing, and reinforcing composite materials. They offer reliable solutions for CTP/fiberglass applications. You can compare the products in the table below and select the one that best suits your needs.
| Features |
PBP-900
Standard Adhesive Paste
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PBP-901
Flexible Adhesive Paste
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PBP-902
High Performance
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PBP-903
Standard Fiber-Reinforced
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PBP-904
Fiber-Reinforced Performance
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PBP-905
Fiber-Reinforced Marine
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PFM01
Polyester Fiber Mastic
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PFM02
Performance Polyester Fiber
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PFM03
High-Performance Fibro
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|---|---|---|---|---|---|---|---|---|---|
| Resin Type | Orthophthalic Polyester | Isophthalic Polyester | Epoxy Vinyl Ester | Orthophthalic Polyester | Isophthalic Polyester | Isophthalic/NPG | Orthophthalic Polyester | Isophthalic Polyester | Vinyl Ester |
| Fiber Supplement | None | None | None | Available (Fiberglass) | Available (Fiberglass) | Available (Fiberglass) | Available (Fiberglass) | Available (Fiberglass) | Available (Fiberglass) |
| Density (g/mL) | 1.40–1.50 | 1.40–1.50 | 1.10–1.20 | 1.25–1.30 | 1.25–1.30 | 0.8–1.0 | ~1.30 | ~1.30 | ~1.15 |
| Viscosity (cPs) | 25,000–35,000 | 25,000–35,000 | 25,000–35,000 | 30,000–40,000 | 30,000–40,000 | 30,000–40,000 | Paste Consistency | Paste Consistency | Paste Consistency |
| Gel time (min.) | 10-12 | 25-30 | 35-45 | 25-35 | 25-35 | 25-35 | 20-30 | 20-30 | 25-35 |
| Thixotropy | High | High | High | Thixotropic | Thixotropic | Thixotropic | High | High | High |
| Tensile Strength (MPa) | 57–60 | - | 40-45 | - | - | - | - | - | High |
| Shear Strength (MPa) | 4.5 | 5 | 7 | - | - | - | - | - | High Cut |
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| Key Applications | Repair and assembly of rigid components | The maritime, automotive, and construction industries | High-strength adhesives | Composite surface filler and repair where chemical resistance is not required | Composite surface filler and repair where chemical resistance is not required | Surface filling and repair of composite parts used in the marine industry | Finishing applications, for use on FIBROBOAT | Finishing applications for areas requiring high performance | Assembly of CTP molds, panels, connectors, ribs, composite structures |