Description
SikaBiresin® AP014 is a fast-setting polyester-based industrial filler paste designed for filling, fairing, and repair applications. This versatile two-component system provides strong adhesion to a wide range of substrates and cures to a rigid, machinable surface suitable for sanding, shaping, and finishing in industrial and composite applications.
Key Features
- Fast-setting polyester filler for repair and surface finishing
- Two-component system with paste resin and cream hardener
- Excellent adhesion to composites, metals, and tooling materials
- Rigid, machinable cured surface for sanding and shaping
- Minimal shrinkage for dimensional stability
- Smooth, creamy consistency for easy application with reduced air entrapment
- Accepts coatings and decorative finishes without discoloration
- Low moisture absorption for improved durability
Technical Specifications
| Specification | Value |
|---|---|
| Chemical Base | Polyester (resin), benzoyl peroxide (hardener) |
| Mix Ratio (by weight) | 100 : 2 |
| Appearance | Thixotropic paste (resin), liquid paste (hardener) |
| Color | White, gray (resin); white, black, red (hardener); mixed: various |
| Density (mixed) | 13.6 – 14.7 lb/gal (1.63 – 1.76 g/cc) |
| Volumetric Weight | 0.061 lb/in³ (1.69 g/cc) |
| Pot Life (102 g @ 25°C) | 4 – 7 minutes |
| Set Time | 10 – 20 minutes |
| Shore D Hardness | 86 |
| Tensile Strength | 3,150 psi (22 MPa) |
| Flexural Strength | 6,280 psi (43 MPa) |
| Compressive Strength | 9,870 psi (68 MPa) |
| Maximum Service Temperature | 285 °F (140 °C) |
Compatible Substrates and Materials
- Fiberglass and FRP composites
- SMC, RIM, and BMC composites
- Graphite and Kevlar®
- Aluminum and steel
- Grey iron and copper
- Plaster and tooling boards
- Models, patterns, and molds
Application Guidance
Surfaces must be thoroughly cleaned, sanded or roughened, re-cleaned, and allowed to dry before application. Mix 100 parts resin with 2 parts cream hardener by weight until uniform, then apply the material while working it into the repair area to minimize air entrapment. The material sets quickly, with working time of only a few minutes, and can be sanded and finished after reaching a tack-free state. Proper ventilation and protective equipment are recommended during use.
Typical Use Cases
- Composite surface porosity filling
- Honeycomb panel edge filling
- Vacuum mold repair and modification
- FRP composite and urethane part repair
- Pattern and tooling repairs
- Void and crevice filling
- Thread repair and insert bonding
Target Industries and Buyers
- Composite manufacturers
- Tooling and pattern shops
- Aerospace and automotive fabrication
- Marine and industrial repair professionals
- OEM manufacturing and maintenance teams
Performance Advantages
Within the industrial filler category, SikaBiresin® AP014 provides a combination of fast cure, strong adhesion, and machinability that supports efficient repair and finishing workflows. Its ability to bond to diverse substrates and produce a durable, sandable surface makes it well-suited for composite, metal, and tooling applications requiring quick turnaround.
Common Questions
Q: What is SikaBiresin® AP014 used for?
A: It is used for filling, fairing, and repair applications across composites, metals, and tooling materials.
Q: Is it a one- or two-component system?
A: It is a two-component system consisting of a polyester resin and a cream hardener.
Q: How fast does it set?
A: It has a pot life of about 4–7 minutes and a set time of approximately 10–20 minutes.
Q: Can it be sanded or machined after curing?
A: Yes, once cured it can be sanded, machined, filed, or scraped.
Q: What substrates does it adhere to?
A: It adheres to fiberglass, composites, metals, plaster, and various tooling materials.
Q: What is the maximum service temperature?
A: It can be used in service temperatures up to 285 °F (140 °C).
Q: Does it shrink during curing?
A: It is described as having minimal shrinkage.
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