Crestabond M1-30
Crestabond M1-30, developed by Scott Bader, is a toughened, two-component 10:1 acrylic adhesive designed for bonding composites, thermoplastics, and metals. This advanced structural methacrylate adhesive (MMA) is engineered to meet the bonding requirements of complex industrial assembly operations, offering exceptional impact, peel, shear, compressive strength, and fatigue resistance. With its primerless application, non-sag properties, and extended working time, Crestabond M1-30 is ideal for demanding structural applications requiring reliable and durable bonds.
In this blog post, we’ll explore the key features, benefits, technical specifications, and application guidelines for Crestabond M1-30, providing a comprehensive resource for professionals seeking a high-performance adhesive solution.
Key Features and Benefits
Crestabond M1-30 is designed for strength and versatility, offering a range of advantages for structural bonding. Here are its standout features and benefits:
- Primerless Application: Eliminates the need for primers, reducing costs and simplifying processes.
- Excellent Adhesion to Dissimilar Substrates: Bonds effectively with composites, thermoplastics, and metals, enabling flexible design options.
- Fast Setting and Curing: Features a working time of 25–35 minutes and a fixture time of 60–80 minutes, optimizing assembly for larger projects.
- Non-Sag Properties: Allows application on vertical surfaces without compromising bond integrity.
- High Strength and Toughness: Delivers superior mechanical performance for demanding structural applications.
- Excellent Environmental Resistance: Performs reliably in harsh conditions, with an operating temperature range of -40°C to 100°C (-40°F to 212°F).
- Enhanced Gap Filling Capability: Accommodates bondline gaps from 1 mm to 50 mm (0.04–2.0 inches) for robust joints.
These qualities make Crestabond M1-30 a top choice for industries requiring durable, high-performance bonding solutions for complex assemblies.
Technical Specifications
Application Properties
| Property | Value |
|---|---|
| Working Time¹ | 25–35 minutes |
| Fixture Time² | 60–80 minutes |
| Gap Filling | 1–50 mm (0.04–2.0 inch) |
| Mixed Color | Grey/Black |
| Recommended Application Temp | 18–25°C (64–77°F) |
¹ Measured with 10g mass of adhesive at 24°C (75°F).
² Defined using ISO 4587 lap shear sample, 0.26 mm bondline thickness at 23°C (73°F), achieving >1.4 MPa.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength³ | 18–22 MPa (2.6–3.2 ksi) |
| Tensile Modulus³ | 600–1000 MPa (870–1450 ksi) |
| Tensile Elongation³ | 100–130% |
| Aluminium Lap Shear⁴ | 17–21 MPa (2.4–3.0 ksi) |
| Recommended Operating Temp⁵ | -40°C to 100°C (-40°F to 212°F) |
³ Tested to ASTM D638.
⁴ Tested to ISO 4587.
⁵ Maximum temperature where an ISO 4587 lap shear sample achieves >3 MPa.
Liquid Properties
| Property | Adhesive | Activator |
|---|---|---|
| Viscosity⁶ | 200,000–240,000 cP 300–800 / 750–2000 dPa.s |
80,000–120,000 cP 100–300 / 300–1000 dPa.s |
| Specific Gravity | 0.95–1.03 g/cc | 1.05–1.15 g/cc |
| Mix Ratio (by Volume) | 10 | 1 |
| Mix Ratio (by Weight) | 9.1 | 1 |
| Color | Off-white | Black |
| Shelf Life⁷ | 12 months | 12 months |
⁶ Measured using a Brookfield Viscometer at 24°C (75°F)* and HAKKE RV1 Rheometer at 25°C (77°F)**.
⁷ Defined from date of manufacture when stored as recommended.
Recommended Substrates
Crestabond M1-30 is formulated to bond a variety of substrates, with lap shear strengths tailored to specific materials. Below are the recommended substrates and their performance metrics:
Plastics
| Material | Lap Shear Strength⁴ |
|---|---|
| Acrylic | 18–22 MPa (Cohesive failure) |
| PVC | 14–18 MPa (Cohesive failure) |
| ABS | 13–17 MPa (Substrate failure) |
| Urethanes & Engineering Thermoplastics | Varies |
Note: For low surface energy plastics (e.g., PP, PE, PTFE), use Crestabond PP-04 instead.
Metals
| Material | Lap Shear Strength⁴ |
|---|---|
| Stainless Steel | 13–17 MPa (Adhesive failure) |
| Cold Rolled Steel (CRS) | 13–17 MPa (Cohesive failure) |
| Aluminium | 17–21 MPa (Cohesive failure) |
| Powder-Coated Metals, Carbon Steel, Zinc/Galvanized, Copper | Varies |
Composites
| Material | Lap Shear Strength⁴ |
|---|---|
| GRP/FRP | 8–12 MPa (Substrate failure) |
| Carbon Fibre, Polyester, DCPD-Modified Vinyl Esters | Varies |
| Epoxy | Test bond strength prior to application |
| Gelcoats | Surface preparation required |
Non-Recommended Substrates: Contact Scott Bader technical services for advice on other materials.
Surface Preparation
Achieving a strong and durable bond with Crestabond M1-30 requires proper surface preparation. Follow these guidelines:
General Guidelines
- Remove oil, grease, dirt, or release agents using a degreasing agent (e.g., acetone or iso-propanol).
- Allow the solvent to fully evaporate before bonding.
- For improved bond durability, mechanically abrade or chemically etch surfaces, followed by a second degreasing step.
- Avoid using petrol, low-grade alcohol, or paint thinners.
Specific Substrates
- Metals:
- Clean with an alcohol/solvent wipe and ensure surfaces are dry.
- For metals like carbon steel, mechanical abrasion followed by solvent wiping may be necessary.
- Thermoplastics:
- Degrease with a suitable solvent (e.g., iso-propanol) to remove dust and contaminants.
- Ensure surfaces are clean and dry before bonding.
- Composites:
- Use peel-ply or solvent cleaning to achieve a dust-free, dry surface.
- For laminates older than 3 days, clean with a lint-free cloth and solvent.
- Mechanically abrade gelcoat or molded surfaces to remove release agents.
- Test bond strength for epoxy laminates prior to application.
Application Instructions
To ensure optimal performance with Crestabond M1-30, adhere to the following steps:
- Surface Preparation:
- Clean substrates thoroughly as outlined above.
- Confirm surfaces are dry and free of contaminants.
- Dispensing:
- Use well-maintained bulk dispensing equipment.
- Dispense adhesive slowly onto a non-bonding surface until the mixed bead is uniform in color (grey/black).
- Verify cure quality before starting the bonding process.
- Bonding:
- Apply enough adhesive to fill the bond gap (1–50 mm).
- Mate parts with sufficient pressure to avoid dry bonds.
- Clamp parts to prevent movement during curing.
- Complete bonding within the 25–35 minute working time.
- Temperature Considerations:
- Maintain adhesive, activator, and substrates at 18–25°C (64–77°F).
- Ambient temperature, bondline thickness, and substrate type may affect fixture time (typically 60–80 minutes).
- Post-Application:
- Avoid moving the assembly until the fixture time is reached.
- Ensure full curing before subjecting the bond to stress.
Note: Crestabond M1-30 is for industrial/commercial use only and not suitable for household applications. Users must verify adhesive suitability for their specific substrates.
Storage and Shelf Life
- Shelf Life: 12 months from the date of manufacture when stored between 2°C and 23°C (36°F and 73°F).
- Storage Conditions:
- Store in original containers, away from direct sunlight.
- Avoid temperatures above 35°C (95°F), as this reduces reactivity.
- Never freeze the product.
- Packaging:
- Available in 18 kg (40 lb) plastic pails, 180 kg (397 lb) drums, 400 ml co-axial cartridges, and 50 ml side-by-side cartridges.
Health and Safety
Consult the Material Safety Data Sheet (MSDS) for detailed health and safety information. Crestabond M1-30 should be handled by skilled individuals, with appropriate precautions taken during use.
Why Choose Crestabond M1-30?
Crestabond M1-30 offers a powerful combination of strength, versatility, and an extended working time, making it ideal for large-scale or complex structural bonding tasks. Its primerless application, non-sag properties, and exceptional gap-filling capability provide significant advantages for industries working with composites, thermoplastics, and metals. With excellent environmental resistance and robust mechanical performance, this adhesive ensures reliable bonds in challenging conditions.
Disclaimer: All information is based on laboratory testing and is not intended for design purposes. We and Scott Bader makes no warranties regarding this data. Users are responsible for verifying the suitability of the adhesive for their specific applications. For more Information About Lubricants Visit Our Articles
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