Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
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
- Applications
- 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 (Properties)
- Typical Liquid Resin Properties
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 - Emulsion Properties - Unfilled Casting (Cured)
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 - Emulsion Properties
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 - Emulsion Properties - Filled Casting (Cured)
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.