Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
Applications & Uses
- Markets
- Application Area
- Compatible Substrates & Surfaces
- Substate
Crestafix® 90-79PA Polyester Bonding Paste 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.
- Surface Preparation
Crestafix® 90-79PA Polyester Bonding Paste should be stored between 2°C and 23°C in the original ,unopened container in a dry, well ventilated place. Protect from freezing and direct sunlight. Avoid contact with oxidizing agents.
- Application
- Crestafix 90-78PA & 90-79PA are 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 1% 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, 4.0 kg of bonding paste will cover one square metre to a depth of approximately 3mm.
Properties
- Physical Form
- Mechanical Properties
- Typical Properties in Liquid State
- Application Properties
- Note
¹ - Working time measured with 100g of adhesive with Butanox M50 (1%) at 25°C
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
⁵ - Shelf life is defined from date of manufacture when stored as recommended
| Value | Units | Test Method / Conditions | |
| Lap Shear Strength (Substrate failure)² | 5 | MPa | — |
| Tensile Strength³ | 29 | MPa | — |
| Tensile Modulus³ | 3200 | MPa | — |
| Tensile Elongation³ | 1 | % | — |
| Barcol Hardness | 39 | — | — |
| Value | Units | Test Method / Conditions | |
| Viscosity⁴ | 600000 | cP | — |
| Density | 1.3 | g/cm³ | — |
| Value | Units | Test Method / Conditions | |
| Working Time¹ | 4 | min | — |
| Gap Filling | 1 - 25 | mm | — |
| Color Change | None | — | — |
| Recommended Application Temperature | 18 - 25 | ºC | — |
Packaging & Availability
- Packaging Type
- Packaging Information
Crestafix® 90-79PA Polyester Bonding Paste are supplied in 25 kg and 225 kg containers.
Storage & Handling
- Shelf Life
- 6 Months⁵
- Storage Conditions
Crestafix® 90-79PA Polyester Bonding Paste should be stored between 2°C and 23°C in the original ,unopened container in a dry, well ventilated place. Protect from freezing and direct sunlight. Avoid contact with oxidising agents.