2-Part MMA Structural Adhesive (Standard)
Key Features
- Bonds most substrates with minimal surface preparation — no priming required
- High tensile shear strength (≥18 MPa steel, ≥12 MPa FRP)
- 30–45 min fixture time for efficient assembly
- Wide substrate compatibility: FRP, carbon, metals, ABS, plastics
- Good chemical resistance and temperature performance to 100°C
This two-component methyl methacrylate (MMA) structural adhesive provides high-strength bonding to a wide range of substrates with minimal surface preparation, making it one of the most versatile structural adhesive technologies for composite fabrication. MMA adhesives cure via free-radical polymerization initiated by a peroxide/amine system — the hardener contains an amine activator and the base contains a peroxide, with no mixing of the initiator and activator until application. Mix ratio is 10:1 by volume. Open time at 23°C is 15–20 minutes with fixture in 30–45 minutes and full structural strength in 24 hours. Tensile shear strength ≥18 MPa on steel and ≥12 MPa on FRP-to-FRP joints (ISO 4587). T-peel strength ≥4 kN/m. The adhesive bonds well to GRP, carbon fiber, ABS, steel, aluminum, and many plastics without priming. Temperature resistance up to 100°C. Chemical resistance is good. Used in FRP assembly lines, RV and commercial vehicle panel bonding, marine structure assembly, and general composite fabrication.
Specifications
| Parameter | Value |
|---|---|
| Full Cure | 24 h at RT |
| Fixture Time | 30–45 min |
| Service Temp | -40°C to +100°C |
| Mix Ratio (vol) | 10:1 |
| T-Peel Strength | ≥ 4 kN/m |
| Open Time (23°C) | 15–20 min |
| Tensile Shear (steel) | ≥ 18 MPa |
Applications
FAQ
MMA adhesives are unique in their ability to bond with minimal surface preparation. For most substrates, wiping with IPA or MEK to remove surface contamination and light abrasion (120–180 grit) to improve mechanical keying is sufficient. Heavy rust, oil, wax, and release agents must be removed. Unlike epoxy adhesives, MMA typically bonds to lightly oiled or oxidized metal surfaces without the grit blasting required for epoxy. For painted surfaces, the bond is to the paint layer — test peel strength on representative samples.
Direct Contact
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