Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Features and Benefits
- Pre accelerated
- Cures with MEKP
- Special accelerator system
- Fast curing
- Wetting agents
- Only one catalyst in the workshop
- Fast curing without exotherm
- Rapid mold turn round, cost savings
- Excellent impregnation of the reinforcement
Applications & Uses
- Applications
- Composites Processing Methods
- Recommended Applications
CRYSTIC U 904 LVK can be processed by RTM or VacFlo systems. CRYSTIC U 904 LVK has been designed to be catalyzed with a conventional MEKP at 50% while giving a very fast demould time under quite low exotherm.
- Formulation Guidelines
CRYSTIC U 904 LVK should be allowed to attain workshop temperature. The following cold curing formulation is recommended:
CRYSTIC U904LVK 100 parts Catalyst M 1 to 2 parts Catalyst M is a Methyl Ethyl Ketone Peroxyde at 50% such as the Butanox M50 from AKZO.
- Gel Time
The ambient temperature and the amount, and type, of accelerator control gel time of resin formulations. At 20°C the gel time of CRYSTIC U 904 LVK containing 2% of catalyst M is about 11 minutes.
Properties
- Typical Liquid Resin Properties
- Cured Properties
- Note
Test according to BS 2782 :1980
1MPa = 1MN/m2 = 1N/mm2 = 10,2 kgf/cm2
* cured 24h at 20°C then 3h at 80°C except for the HDT where the schedule was 24h at 20°C then 5h at 80°C then 3h at 120°C.
| Value | Units | Test Method / Conditions | |
| Viscosity (at 25°C, Rhéomat 37.35 s⁻¹) | 1 - 1.4 | dPa.s | — |
| Specific Gravity | 1.1 | — | — |
| Acid Value | 22 | mg KOH/g | — |
| Volatile Content | 44 - 48 | % | — |
| Stability (in dark at 20°C) | 3 | Months | — |
| Gel Time (at 20°C, with 100 parts of U 904 LVK 1 parts Catalyst M) | 20 - 25 | Minutes | — |
| Gel Time (at 20°C with100 parts of U 904 LVK60, 1.5 parts Catalyst M) | 55 - 65 | Minutes | — |
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (Model GYZ 934-1)* | 40 | — | — |
| Water Absorption (24h, at 23°C)* | 15 | mg | — |
| Heat Deformation Temperature (1.80 MPa)* | 80 | °C | — |
| Specific Gravity* | 1.2 | — | — |
| Tensile Strength* | 52 | MPa | — |
| Tensile Modulus* | 4000 | MPa | — |
| Elongation (at break)* | 2 | % | — |
Technical Details & Test Data
- Additives
Since certain pigments, fillers or extra styrene may affect the properties of CRYSTIC U 904 LVK their effect should be evaluated before addition to the formulation.
- Post Curing
Post curing is recommended in order to develop the heat deflection temperature, dimensional stability and optimum mechanical and fire retardant properties.
Packaging & Availability
- Packaging Type
- Packaging Information
CRYSTIC U 904 LVK is supplied in 250 kg drums.
- Variants
CRYSTIC U904LVK30 is a variant with a longer gel time. A minimum of 3.5 tons is required per order.