Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Features and Benefits
- Isophthalic base resin
- High elongation
- Easy to apply
- Excellent water / blistering resistance
- Good impact resistance
- Excellent surface finish
- Features and Benefits
Features Benefits Isophthalic base resin Excellent water / blistering resistance
High elongation Good impact resistance
Easy to apply Excellent surface finish
Applications & Uses
- Applications
- Application Method
- Composites Processing Methods
- Application Guidelines
It is recommended that customers test all pigmented gelcoats before use under their own conditions of application to ensure that the product meets requirements.
- Applications
- Applications requiring a smooth finish on the reverse side of a laminate and good long-term performance
- Marine - hulls, decks and components, building, transport or any general industrial application
- Formulation Guidelines
Crystic Gelcoat 65PA should be allowed to attain workshop temperature (18ºC-20°C) before use. Stir well by hand, or with a low shear mixer to avoid aeration, and then allow to stand to regain thixotropy. Crystic Gelcoat 65PA requires only the addition of catalyst to start the curing reaction. The recommended catalyst is Norox® KP9, and this should be added at 1-3% into the gelcoat. The catalyst should be thoroughly incorporated into the gelcoat, with a low shear mechanical stirrer where possible.
- Gel Time and Backup Time
Catalyst level and temperature will influence the gel time. The product only requires the addition of catalyst to start curing. We recommend the use of a 50% MEKP (type Butanox® M-50) which should be added at 2% in the gelcoat.
Temperature Gel time (2% Butanox M-50)** Backup time (2% Butanox® M-50)**
15°C 19 minutes 90 minutes 20°C 12 minutes 45 minutes 25°C 9 minutes 30 minutes 30°C 6 minutes 25 minutes **Measured under laboratory conditions. Information should be used as a guide only.
- Brush Application
Satisfactory laminates for many applications can be made with Crystic® Gelcoat 65PA by curing at workshop temperature (15°C - 25C). However, for optimum properties, laminates must be post-cured before being put into service. The molding should be allowed to cure for 24 hours at workshop temperature, and then oven-cured for 16 hours at 40°C.
- Post-Curing
Satisfactory laminates for many applications can be made with Crystic® Gelcoat 65PA by curing at workshop temperature (15°C - 25C). However, for optimum properties, laminates must be post-cured before being put into service. The moulding should be allowed to cure for 24 hours at workshop temperature, and then oven-cured for 16 hours at 40°C.
- Additives and Variants
The information contained in this technical data sheet applies to all pigmented versions. A topcoat version of this material is available called 65PAX. The topcoat can be formulated by addition of 2% Crystic® Solution MW into the gelcoat. A non-accelerated version, Crystic® Gelcoat 65, can also be supplied. Incorporation of additional material may affect the working, weathering or cured properties of the gelcoat.
Properties
- Cured Properties
- Uncured Properties
- Note
* Curing schedule - 24hrs at 20°C, 3hrs at 80°C.
† Curing schedule - 24hrs at 20°C, 5hrs at 80°C, 3hrs at 120°C.- Typical Properties
The following tables give typical properties of Crystic Gelcoat 65PA when tested in accordance with BS2782.
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (Model GYZJ 934-1)* | 42 | — | EN59 |
| Water Absorption (24 hours at 23°C)* | 18 | mg | BS EN ISO 62 part 6.2 |
| Heat Deflection Temperature (1.8MPa) † | 75 | °C | BS EN ISO 75-2 (1996) |
| Tensile Strength* | 75 | MPa | BS EN ISO 527-2 |
| Tensile Modulus* | 3500 | MPa | BS EN ISO 527-2 |
| Elongation (at Break)* | 3 | % | BS EN ISO 527-2 |
| Flexural Strength* | 126 | MPa | BS EN ISO 178 |
| Flexural Modulus* | 4300 | MPa | BS EN ISO 178 |
| Value | Units | Test Method / Conditions | |
| Viscosity (25°C, 0.6s⁻¹) | 400 | Poise | — |
| Viscosity (at 25°C, 4500 s⁻¹) | 15 | Poise | — |
| Specific Gravity (at 25°C) | 1.1 | — | — |
| Styrene Content | 34 | % | — |
Regulatory & Compliance
- Quality Standards
- Approvals
- Crystic Gelcoat 65PA is a high performance isophthalic gelcoat. It is pre-accelerated and formulated for brush application. The information contained in this technical data sheet applies to all colors. Crystic® Gelcoat 65PA is recommended for use in all markets including marine, land transport and building applications. It is also suitable for general molding requirements. Crystic® Gelcoat 65PA is approved by Lloyd’s Register of Shipping.
Technical Details & Test Data
- Post Curing
Satisfactory laminates for many applications can be made with Crystic Gelcoat 65PA by curing at workshop temperature (20ºC). However, for optimum properties, laminates must be post cured before being put into service. The molding should be allowed to cure for 24 hours at 20ºC, and then be oven-cured for 3 hours at 80ºC.
Packaging & Availability
- Country Availability
- Packaging Type
- Regional Availability
- Packaging
Crystic Gelcoat 65PA is supplied in 25kg and 225kg containers.
Storage & Handling
- Shelf Life
- 5 Months
- Storage
Crystic® Gelcoat 65PA should be stored in its original container, under cover, and out of direct sunlight. These must be kept closed and airtight. It is recommended that the storage temperature should be less than 25°C and the product should not be frozen. Storing the product outside of these conditions may affect the properties of the product and reduce its shelf life. Ideally, containers should be opened only immediately prior to use.