Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
Features & Benefits
- Features and Benefits
Water filled castings of Crystic 1381PA can be nailed, screwed, sawn or machined without splitting. Decorative surface finishes can be obtained by the use of gelcoats or the post application of suitable stains and paints
Applications & Uses
- Markets
- Recommended Applications
Water filled Crystic 1381PA is suitable for general casting work or intricate detailed moldings such as decorative articles and statuettes.
- Formulation Guidelines
Crystic 1381PA and the water to be incorporated into it, should be allowed to attain workshop temperature (18°C - 20°C) before use. The minimum recommended water content is 40%, though levels up to 60% can be added. Although higher water contents decrease costs, it should be borne in mind that strength reduces and emulsion viscosity increases, with extra water. The water should be incorporated using a mechanical mixer. Although not essential, a high shear stirrer is desirable, as it will produce a more stable emulsion. The recommended catalyst is Catalyst M (or Butanox M50). The catalyst should be added at 1.5% into the resin/water mix immediately prior to use, and thoroughly dispersed.
Properties
- Color
- Typical Liquid Resin Properties
- Emulsion Properties - Unfilled Casting (Cured)
- Emulsion Properties
- Emulsion Properties - Filled Casting (Cured)
| Value | Units | Test Method / Conditions | |
| Viscosity (at 25°C, 4500 s⁻¹) | 4 | Poise | BS 2782 |
| Solid Content | 56 | % | BS 2782 |
| Specific Gravity | 1.1 | — | BS 2782 |
| Stability (at 20°C) | 3 | Months | BS 2782 |
| Value | Units | Test Method / Conditions | |
| Deflection temperature (under load 1.80 MPa, 40% Water)* | 57 | ºC | BS 2782 |
| Tensile Strength (40% Water)* | 29 | MPa | BS 2782 |
| Tensile Modulus (40% Water)* | 1275 | MPa | BS 2782 |
| Elongation (at break, 40% Water)* | 4.1 | % | BS 2782 |
| Deflection temperature (under load 1.80 MPa, 50% Water)* | 57 | ºC | BS 2782 |
| Tensile Strength (50% Water)* | 14 | MPa | BS 2782 |
| Tensile Strength (50% Water)* | 10 | MPa | BS 2782 |
| Tensile Modulus (50% Water)* | 750 | MPa | BS 2782 |
| Tensile Modulus (50% Water)* | 390 | MPa | BS 2782 |
| Elongation (at break, 50% Water)* | 2.9 | % | BS 2782 |
| Shrinkage (50% Water)* | max. 1 | % | BS 2782 |
| Deflection temperature (under load 1.80 MPa, 60% Water)* | 55 | ºC | BS 2782 |
| Elongation (at break, 60% Water)* | 2.3 | % | BS 2782 |
| Value | Units | Test Method / Conditions | |
| Viscosity (at 25°C, Rotothinner) | 8.5 | Poise | BS 2782 |
| Solid Content | 27 | % | BS 2782 |
| Specific Gravity | 1.04 | — | BS 2782 |
| Emulsion Stability | min. 30 | Minutes | BS 2782 |
| Gel Time (at 25°C, using 1.5% Catalyst M) | 11 | Minutes | BS 2782 |
| Exotherm Temperaure (at 25°C) | 50 | °C | BS 2782 |
| Time to Peak | 30 | Minutes | BS 2782 |
| Value | Units | Test Method / Conditions | |
| Flexural Strength (80% by wt Limestone on Emulsion, 40% Water)** | 8 | MPa | BS 2782 |
| Flexural Modulus (80% by wt Limestone on Emulsion, 40% Water)** | 1600 | MPa | BS 2782 |
| Flexural Strength (80% by wt Limestone on Emulsion, 50% Water)** | 8 | MPa | BS 2782 |
| Flexural Modulus (80% by wt Limestone on Emulsion, 50% Water)** | 1400 | MPa | BS 2782 |
| Flexural Strength (80% by wt Limestone on Emulsion, 60% Water)** | 8.7 | MPa | BS 2782 |
| Flexural Modulus (80% by wt Limestone on Emulsion, 60% Water)** | 1600 | MPa | BS 2782 |
Technical Details & Test Data
- Additives
- Crystic 1381PA emulsions may be pigmented by the addition of up to 5% Crystic Pigment Paste. Certain water soluble dyes may also be used.
- The physical properties of Crystic 1381PA may be enhanced by the addition of reinforcements such as glass or mineral fibers.
- Conventional fillers and aggregates may also be used though clay-like materials are not generally suitable as they can break the emulsion.
- Users should satisfy themselves that any additions made do not adversely affect the stability, processing, or properties in service of the emulsion.
- Water Retention Characteristics
Water filled castings will gradually lose water by evaporation and diffusion. The rate of loss will depend on factors such as ambient temperature and original water content. The following table shows typical weight loss figure
Cure Details Weight Loss (%) 40% Emulsion 50% Emulsion 60% Emulsion 7 days at 20°C 5.2 6.2 9.2 28 days at 20°C 11.8 12.9 18.9 16 hours at 40°C 3.3 4.5 6.9 3 hours at 80°C 5.0 6.4 8.2 - Post Curing
Satisfactory castings can be made with Crystic 1381PA by curing at room temperature. Some increase in properties may be obtained by post curing. Castings which are to be post cured should be allowed to cure for 24 hours at 20°C and then be oven cured for 16 hours at 40°C or 3 hours at 80°C.
Packaging & Availability
- Packaging
- Crystic® 1381PA is supplied in 25kg and 200kg containers.
Storage & Handling
- Storage
- Crystic® 1381PA 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
- Pot Life
Temperature Pot Life in Minutes 50% Water Emulsion 15°C 20 20°C 15 25°C 11 The emulsion, mold and workshop should be at, or above, 15°C before curing is carried out.