Knowde Enhanced TDS
Identification & Functionality
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Features and Benefits
- Highly thixotropic
- Color change system
- Low shrink system
- Urethane acrylate base
- No drainage on vertical surfaces
- Visual check for effective catalyst mix
- No print through, excellent surface aspect
- Excellent adhesion and good elongation at break
Applications & Uses
- Applications
- Recommended Applications
Crestafix 621CC range is supplied pre-accelerated, requiring only the addition of catalyst to start the curing reaction. The recommended catalyst is Butanox M50, which should be added at 2% v/w into the bonding paste. The catalyst should be thoroughly incorporated into the material with a low shear mechanical stirrer where possible, taking care to keep air entrapment to a minimum. Alternatively the bonding paste can be applied with a dispensing unit. The use of additional pigments or fillers is not recommended as they can affect the performance of the adhesive
- Coverage
As a rough guide, 4.0Kg (9 lbs) of bonding paste will cover one square meter to a depth of approximately 3mm (0.12 inch).
Properties
- Physical Form
- Mechanical Properties
- Typical Properties
- Application Properties
- Note
1. Working time measured with 100g of adhesive with Butanox M50 (2%) at 25°C (77°F).
2. GRP lap shear tested to BS ISO 4587.
3. Tensile properties tested to BS EN ISO 527-2.
4. Viscosity measured using Brookfield Viscometer at 25°C (77°F).- Substrates
Crestafix 621CC range is suitable for use on GRP laminate, but can also be used on timber and plasterboard. However, it is recommended that trials are carried out to ensure that adequate bond strengths are obtained.
| Value | Units | Test Method / Conditions | |
| Approvals | Grade 2 DNV | — | — |
| Hardness | 80 | Shore D | — |
| Lap Shear Strength | 10 (1450) | mPa (psi) | — |
| Tensile Strength⁴ | 25 | MPa | — |
| Tensile Modulus⁴ | 3000 | MPa | — |
| Tensile Elongation³ | 3 | % | — |
| Value | Units | Test Method / Conditions | |
| Viscosity⁵ | 180,000 - 240,000 | cP | — |
| Value | Units | Test Method / Conditions | |
| Working Time¹ | 50 | minutes | — |
| Gap Filling | 1 - 25 | mm | — |
| Recommended Application Temperature | 18 - 25 | °C | — |
| Color Change | Blue to Grey | — | — |
Technical Details & Test Data
- Surface Preparation
The surfaces to be bonded should be clean, dry and free from any contamination. It may be necessary to mechanically abrade the surfaces to be bonded in order to obtain the bond strength required. Each surface should be coated with the catalyzed bonding paste and held together until the adhesive has hardened.
Packaging & Availability
- Packaging Type
- Regional Availability
- Packaging Information
The Crestafix 621CC range is supplied in 25Kg (55 lbs) and 225Kg (500 lbs) containers.
Storage & Handling
- Shelf Life
- 6 Months
- Storage and Shelf Life
The Crestafix 621CC range should be stored between 2°C and 23°C (36°F and 77°F) in the original ,unopened container in a dry, well ventilated place. Protect from freezing and direct sunlight. Avoid contact with oxidizing agents. The shelf life is defined from date of manufacture when stored as recommended . The expiry date is indicated on product labels.