Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Reinforcement Material
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
Applications & Uses
- Applications
- Composites Processing Methods
- Applications
Crystic 406PA is recommended for the manufacture of boat hulls, vehicle bodies and industrial moldings.
- Formulation Guidelines
Crystic 406PA should be allowed to attain workshop temperature (18ºC - 20ºC) before use. Stir well by hand, or with a low shear mixer to avoid aeration, and then allow to stand to regain thixotropy. Crystic 406PA requires only the addition of a catalyst to start the curing reaction. The recommended catalyst for normal conditions is Norox® KP9. Catalyst Norox® MEKP-925H will increase the pot life under hot conditions. The catalyst should be thoroughly incorporated into the resin, with a low shear mechanical stirrer where possible. Crystic 406PA is formulated for room temperature curing applications. It requires only addition of the correct amount of catalyst to start the curing reaction. The recommended formulations are given in Table :
Table: Recommended formulations for room temperature curing of Crystic 406PA.
Component Parts by weight Crystic 406PA 100 Andonox® KP9 or Norox® MEKP-925H 1 to 3 - Pot Life
The ambient temperature and the amount of Andonox® KP9 or Norox® MEKP-925H control the gel time of the formulation. This can be approximately determined from Table 2, which shows the gel times of various formulations of Crystic 406PA.
Table 2: Geltimes in minutes for Crystic 406PA
NR = combination not recommended.
Catalyst type Andonox® KP9 Norox® MEKP 925H Catalyst addition 2.5% 2.0% 1.5% 1.0% 2.0% 1.5% 1.0% Temperature 35 °C NR NR NR 8.5 7 9 15 25 °C NR 10 13 18.5 NR NR NR 15 °C 13 16 22 NR NR NR NR Curing should not be carried out at temperatures below 15°C. Scott Bader (Pty) Ltd. will not be liable for problems caused by use at lower temperatures than recommended. The resin must be allowed to attain workshop temperature before being formulated for use. 20°C is recommended.
Properties
- Color
- Typical Liquid Resin Properties
- Interfacial Properties
- Resin Properties - Unfilled Casting (Cured)
- Note
* Curing Schedule - 24 hrs at 20ºC, 3 hrs at 80ºC
† Curing Schedule - 24 hrs at 20ºC, 5 hrs at 80ºC, 3 hrs at 120ºC** 24hrs delay between 2 lay-ups of 2 x 450 g/m² chopped strand mat
*** 2 x 450 g/m² CSM. Allowed to gel. Then 700 g/m² pure resin interface. Then 24hrs delay. Then 2 x 450 g/m² CSM.
†† Data obtained using 5 days delay instead of 24hrs
| Value | Units | Test Method / Conditions | |
| Viscosity (at 25°C, Brookfield RVT, 100 rpm) | 650 | Centipoise | — |
| Thixotropic Index | 2 | Ratio | — |
| Specific Gravity (at 25°C) | 1.1 | — | — |
| Volatile Content | 36 | % | — |
| Acid Value | 18.5 | mg KOH/g | — |
| Stability (at 20°C) | 3 | Months | — |
| Gel Time (at 25°C, using 1% Andonox® KP9 catalyst) | 18.5 | Minutes | — |
| Value | Units | Test Method / Conditions | |
| Unnotched Charpy Impact Strength (Normal **) | 72 | kJ/m² | — |
| Single Lap Shear Strength (Normal **) | 3.8 | MPa | — |
| Short Beam Shear Strength | 22 | MPa | — |
| Fracture Surface Energy (Normal **) | 350 | J/m² | — |
| Unnotched Charpy Impact Strength (Resin-rich***) | 70 | kJ/m² | — |
| Single Lap Shear Strength (Resin-rich***) | 3.9 | MPa | — |
| Short Beam Shear Strength (Resin-rich***) | 21 | MPa | — |
| Fracture Surface Energy (Resin-rich***) | 300 | J/m² | — |
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (Model GYZ 934-1)* | 45 | — | — |
| Deflection Temperature (under load 1.80 MPa) †* | 62 | ºC | — |
| Water Absorption (24h, at 23°C)* | 14 | mg | — |
| Tensile Strength* | 54 | MPa | — |
| Tensile Modulus* | 3700 | MPa | — |
| Elongation (at break)* | 1.7 | % | — |
| Specific Gravity (at 25°C)* | 1.2 | — | — |
| Volumetric Shrinkage* | 8.35 | % | — |
Regulatory & Compliance
- Approvals
- Crystic® 406PA is approved by Lloyd's Register of Shipping for use in the construction of craft under their survey.
Technical Details & Test Data
- Additives
The addition of certain pigments, fillers or extra styrene may adversely affect the properties of Crystic 406PA. Users should seek advice from our Technical Service Department before making any additions.
- Post Curing
Satisfactory laminates for many applications can be made from Crystic 406PA by curing at workshop temperature (20ºC). For optimum properties and long term performance, however, laminates should be post cured before being put into service. The laminate should be allowed to cure for 24 hours at 20ºC, and then be oven cured for 3 hours at 80ºC or 16 hours at 40ºC
Packaging & Availability
- Packaging Type
- Packaging
- Crystic® 406PA is supplied in 25kg, 225kg drums, and 1125kg intermediate bulk containers. Bulk supplies can be delivered by road tanker.
Storage & Handling
- Storage
- Crystic® 406PA should be stored in the dark in suitable closed containers. It is recommended that the storage temperature should be less than 20°C where practical, but should not exceed 30°C. Ideally, containers should be opened only immediately prior to use. Where they have to be stored outside, it is recommended that drums be kept in a horizontal position to avoid the possible ingress of water.