Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Materials Features
- Features and Benefits
- Suitable for both mechanical and hand mixing processes.
- Exhibits excellent wetting of filler particles to achieve the required filler loadings.
- Suitable to cast fine detailed small castings, which will have excellent dimensional stability.
- Finished castings have excellent painting and staining properties.
Applications & Uses
- Markets
- Formulation Guidelines
Crystic 911PASA should be allowed to attain workshop temperature (18o C - 25o C) before use. Crystic 911PASA is formulated for room temperature curing applications. It requires only addition of the correct amount of catalyst - Norox® KP9 catalyst or Norox® MEKP-925H to start the curing reaction. The recommended formulation is given below:
- Products made with Crystic 911PASA are generally filled with different grades of powdered filler (e.g. calcium carbonate), typically 50% by weight. Higher amounts may be added but this may require the mold to be vibrated.
- Pigment pastes can be mixed with Crystic 911PASA, when a specific color is required.
Table 1: Formulation for room temperature curing of Crystic 911PASA
Component Parts by weight Crystic 911PASA 100 Andonox® KP9 or Norox® MEKP-925H 1.0-3.0 Powdered filler 100-200 The catalyst must be stirred thoroughly into the resin shortly before use. Curing should not be carried out at temperatures below 15ºC. The resin, mold and workshop should be at, or above, 15ºC before curing is carried out. Scott Bader (Pty) Ltd. will not be liable for problems caused by use at lower temperatures than recommended.
- Pot Life
Crystic 911PASA is formulated for use between 15ºC and 30ºC. It is recommended that workshop temperatures be maintained within this range. At temperatures above 30°C, the gel time even at 1% Andonox® KP9 can be so short that there is insufficient working time to fill the mold. Also, this can cause excessive exotherm which may cause moldings to crack. In such cases, do not use less than 1% catalyst as this can cause undercure. Rather use Norox ® MEKP-925H. At temperatures below 15°C, the curing reaction can be so slow that there is a high probability of undercure of the resin, even with over 3.0% Andonox® KP9. Do not use more than 3% catalyst as that will not speed up the geltime appreciably or result in a faster cure; in fact it can further retard the cure. Rather warm up the resin and working area so that it is above 15°C.
- Applications
Crystic 911PASA has been developed specifically for the casting of small detailed castings, including collectables and figurines.
Properties
- Color
- Typical Liquid Resin Properties
- Resin Properties - Unfilled Casting (Cured)
- Note
* Curing Schedule. 24 hrs at 20°C, 3 hrs at 80°C
† Curing Schedule. 24 hrs at 20°C, 5 hrs at 80°C, 3 hrs at 120°C
| Value | Units | Test Method / Conditions | |
| Acid Value | 21 | mg KOH/g | — |
| Non Volatiles | 58 | % | — |
| Viscosity (at 25°C, Brookfield RVT, 100 rpm) | 300 | cPs | — |
| Stability (at 25°C) | 3 | Months | — |
| Gel Time (at 25°C, using 1% Andonox® KP9) | 16 | Minutes | — |
| Value | Units | Test Method / Conditions | |
| Barcol Hardness (Model GYZ 934-1)* | 14 | — | — |
| Water Absorption (24h, at 23°C)* | 33.5 | mg | — |
| Deflection Temperature (under load 1.80 MPa) †* | 40.4 | ºC | — |
| Elongation (at break, 20°C)* | 14 | % | — |
| Tensile Strength* | 26.5 | MPa | — |
| Tensile Modulus* | 1085 | MPa | — |
| Flexural Strength* | 41.3 | MPa | — |
| Flexural Modulus* | 1060 | MPa | — |
| Impact Charpy* | 12.12 | kJ/m² | — |
Packaging & Availability
- Packaging Type
- Packaging Information
Crystic® 911PASA is supplied in 25kg, 225kg and 1125kg intermediate bulk containers.
Storage & Handling
- Storage Conditions
Crystic® 911PASA 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.