Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Chemical Name
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Features and Benefits
- Primerless application
- Excellent adhesion to dissimilar substrates
- Long working time and high gap fill
- Exceptional sag resistance
- High strength, modulus and toughness
- Excellent environmental resistance
- No need for extra materials or processes
- Affords greater flexibility in design
- Allows for use on large structures
- Application on vertical surfaces
- Designed for demanding structural application
- Designed for demanding environmental applications
Applications & Uses
- Markets
- Applications
- Compatible Substrates & Surfaces
- Guide to Bonding
Check first
- Product is within shelf life
- Cartridge has been stored correctly
- No obvious defect or damage to cartridge
- No blockages at the cartridge outlet
- Correct static mixing nozzle is being used
Key points
- Higher or lower working temperatures will cause the working time to decrease or increase
- Static mixers must always be discarded after use
- Operating temperature of Crestabond® is from -40°C up to 100°C
- Applications
Prior to bonding, ensure the substrate surface is clean by following the surface preparation instructions provided. Bulk dispensing equipment should be in good operating condition. Dispense the adhesive at a slow rate initially onto a non-bonding surface until the mixed bead color is uniform. Check the dispensed bead for cure quality before beginning the bonding process.
Dispense enough adhesive to fill the bond gap before parts are mated. Avoid dry bonds by using adequate pressure to mate parts and clamp properly to prevent joint movement. The working time is the approximate time after mixing that the adhesive is still usable. The bonding process must be completed before the working time of the mixed adhesive expires. The viscosities of both adhesive and activator are affected by temperature. The adhesive, activator and parts to be bonded should be allowed to attain workshop temperature of between 18°C and 25°C (64°F and 77°F) prior to bonding. The operating temperature should be maintained during the bonding process and until the adhesive is sufficiently cured to allow movement of the assembly. Typically, such movement may be possible after the fixture time of the adhesive is achieved. Ambient temperature, bondline thickness and the substrate materials being bonded can all affect the fixture time.
For industrial/commercial use only. Not to be used in household applications. The user must determine the suitability of a selected adhesive for a given substrate and application. Contact your local Scott Bader representative for questions or assistance with the selection of adhesives for your use. This product is intended for use by skilled individuals at their own risk. Recommendations contained herein are based on information we believe to be reliable.
Properties
- Mechanical Properties
- Typical Properties
- Application Properties
- Substrates
- The shelf life of Crestabond products is defined from date of manufacture when stored in the original packaging, out of direct sunlight and at a consistent temperature between 2°C and 23°C (36°F and 73°F). The expiry date is indicated on the product labels.
- Exposure to temperatures above 23°C (73°F) will reduce the shelf life of the product. To achieve the maximum shelf life it is highly recommended that these products are cold stored, ideally between 2°C and 10°C (36°F and 50°F). This ensures optimal and consistent product performance throughout the stated shelf life and provides protection to the product when exposed to short periods of unfavorable temperature conditions experienced in the supply chain. These products do not require protection from freezing however care must be taken to allow the material to slowly recondition to workshop temperatures. The use of warm air blowers or heated jackets must be strictly avoided as they can cause extreme localized heating, leading to a complete loss of reactivity, gelling and/ or impact to mechanical performance.
- Bulk product and cartridge material should be opened only immediately prior to use.
- Viscosity⁶
350-800 & 1000-3000 dPa.s**
Note : Viscosity measured using HAKKE RV1 Rheometer at 25°C (77°F)**
- Note
1. Working time measured with 10g mass of adhesive with 10:1 mix ratio by volume at 24°C (75°F).
2. Fixture time defined using an ISO 4587 lap shear sample, 0.26mm bondline
thickness with 23°C (73°F) ambient temperature achieving >1.4MPa.
3. Tested to ASTM D638.
4. Tested according to ISO 4587
5. Maximum temperature where an ISO 4587 lap shear sample, 0.26mm bondline thickness achieves >3MPa.
6. Viscosity measured using a Brookfield Viscometer at 24oC (75oF)*
8. Surface preparation of epoxy laminates may be necessary and testing should be performed to ensure sufficient bond strength is achieved
9.Surface preparation is likely to be needed on gelcoat surfaces to ensure no release agents are present.
| Value | Units | Test Method / Conditions | |
| Tensile Strength³ | 20 - 25 | MPa | — |
| Tensile Modulus³ | 1000 - 1400 | MPa | — |
| Tensile Elongation³ | 70 - 100 | % | — |
| Aluminium Lap Shear⁴ | 12 - 16 | MPa | — |
| Recommended Operating Temperature⁵ | -40 to 100 | °C | — |
| Value | Units | Test Method / Conditions | |
| Specific Gravity | 0.97 - 1.03 | g/cc | — |
| Mix Ratio (by volume) | 10 | — | — |
| Mix Ratio (by weight) | 9.1 | — | — |
| Viscosity (at 24ºC)⁶ | 340,000 - 380,000 | cP | Brookfield Viscometer |
| Value | Units | Test Method / Conditions | |
| Working Time¹ | 50 - 70 | minutes | — |
| Fixture Time² | 110 - 140 | Minutes | — |
| Gap Filling | 1 - 50 | mm | — |
| Mixed Color | Green | — | — |
| Recommended Application Temperature | 18 - 25 | °C | — |
Technical Details & Test Data
- Surface Preparation
The surface to be bonded can affect the strength and durability of the bond joint. Appropriate treatment may be required to ensure that there are no traces of oil, grease, dirt or release agents through the use of a degreasing agent, for instance acetone or another degreasing agent on the joint surfaces.
Mechanically abrading or chemically etching degreased surfaces can make bond joints more durable and stronger. If abrading, a second treatment of degreasing is highly recommended.
Do not use petrol (gasoline), low grade alcohol or paint thinners.
i) Metals
Typically, the surface should be clean and dry by using an alcohol/solvent wipe and allowing the solvent to evaporate before application. Certain metals, such as carbon steel may also require mechanical abrasion and a subsequent alcohol solvent wipe prior to bonding.
ii) Thermoplastics
The surface must be clean, dust-free and dry. A suitable solvent such as iso-propanol can be used to degrease.
iii) Composites
The surface must be clean, dust-free and dry. This can be achieved by the use of proprietary strippable cloths such as peel-ply (without lubricant contaminates). The laminate should be fully cured prior to bonding and if the laminate surfaces are more than 3 days old, it is recommended that the surface must be cleaned with a suitable solvent or cleaner with a lint-free, clean cloth prior to bonding.
Surface preparation, such as mechanical abrasion, is likely to be needed on gel coat surfaces and molded surfaces where release agents are likely to be present. When bonding epoxy laminates please test bond strength prior to application.
Packaging & Availability
- Packaging Type
- Regional Availability
- Packaging
Crestabond M1-60HV/2 is supplied in 18Kg (40 lb) plastic pails, 180Kg (397 lb) drums, pre-packed 400ml co-axial cartridges, and 490ml/825ml side by side cartridges.
Storage & Handling
- Shelf Life
- 12 Months
- Storage and Shelf Life
- The shelf life of Crestabond products is defined from date of manufacture when stored in the original packaging, out of direct sunlight and at a consistent temperature between 2°C and 23°C (36°F and 73°F). The expiry date is indicated on the product labels.
- Exposure to temperatures above 23°C (73°F) will reduce the shelf life of the product. To achieve the maximum shelf life it is highly recommended that these products are cold stored, ideally between 2°C and 10°C (36°F and 50°F). This ensures optimal and consistent product performance throughout the stated shelf life and provides protection to the product when exposed to short periods of unfavourable temperature conditions experienced in the supply chain. These products do not require protection from freezing however care must be taken to allow the material to slowly recondition to workshop temperatures. The use of warm air blowers or heated jackets must be strictly avoided as they can cause extreme localised heating, leading to a complete loss of reactivity, gelling and/ or impact to mechanical performance.
- Bulk product and cartridge material should be opened only immediately prior to use.