Description
SikaBiresin® AP017 is a styrene-free, fast-setting polyester filler designed for high-temperature filling, fairing, and repair applications. This two-component industrial filler delivers strong adhesion and machinable performance, making it suitable for composite, metal, and tooling repairs where elevated service temperatures are required.
Key Features
- Styrene-free polyester filler for industrial repair and finishing
- Very fast setting for efficient repair workflows
- High temperature resistance for demanding applications
- Excellent adhesion to composites, metals, and tooling materials
- Minimal shrinkage for dimensional stability
- High chemical and water resistance
- Machinable surface for sanding, shaping, and finishing
- Smooth, creamy consistency for reduced air entrapment
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, black (resin); white, black, red (hardener); mixed: various |
| Density (mixed) | 13.3 lb/gal (1.60 g/cc) |
| Volumetric Weight | 0.061 lb/in³ (1.69 g/cc) |
| Pot Life (102 g @ 25°C) | 5 – 7 minutes |
| Set Time | 10 – 20 minutes |
| Shore D Hardness | 80 |
| Tensile Strength | 4,074 psi (28 MPa) |
| Flexural Strength | 7,080 psi (49 MPa) |
| Compressive Strength | 8,992 psi (62 MPa) |
| Water Absorption (24 hr) | 0.149% |
| Maximum Service Temperature | 400 °F (204 °C) |
Compatible Substrates and Materials
- Fiberglass and FRP composites
- SMC, BMC, and RIM composites
- Epoxy and high-temperature molds
- Graphite and Kevlar® composites
- Aluminum and steel
- Cast iron
- Urethane foam parts
Application Guidance
Surfaces must be thoroughly cleaned, sanded or roughened, re-cleaned, and allowed to dry prior to application. Mix 100 parts resin with 2 parts cream hardener by weight until uniform, then apply while working the material into the repair area to minimize air entrapment. The filler sets quickly, so application should be completed within the available working time, and the cured material can be sanded and finished after reaching a tack-free state.
Typical Use Cases
- Composite surface repair and porosity filling
- Aircraft interior panel repairs
- Honeycomb panel edge filling
- Vacuum mold repair and modification
- Gel-coat and FRP mold repairs
- Potting bushings and inserts
- High-temperature tooling and fixture repair
Target Industries and Buyers
- Aerospace and aircraft manufacturing
- Marine and composite fabrication
- Automotive and industrial manufacturing
- Tooling and pattern shops
- OEM production and repair teams
Performance Advantages
Within the industrial filler category, SikaBiresin® AP017 provides fast cure and strong adhesion combined with elevated temperature resistance. Its styrene-free formulation and machinable finish make it suitable for demanding repair and finishing applications where thermal performance and material compatibility are critical.
Common Questions
Q: What is SikaBiresin® AP017 used for?
A: It is used for filling, fairing, and repair applications, especially in high-temperature environments.
Q: Is it a two-component system?
A: Yes, it consists of a polyester resin and a cream hardener.
Q: How fast does it set?
A: It has a pot life of about 5–7 minutes and sets within approximately 10–20 minutes.
Q: Can it be used in high-temperature applications?
A: Yes, it is designed for service temperatures up to 400 °F (204 °C).
Q: Can it be sanded or machined after curing?
A: Yes, it can be sanded, machined, and finished after curing.
Q: What substrates does it adhere to?
A: It adheres to composites, metals, epoxy molds, and urethane materials.
Q: Is it suitable for marine or underwater use?
A: Yes, it is suitable for both above and below waterline applications.
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