Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Ultra Violet Stability
Crystic PDME 074 is ultra violet stabilized by addition of special anti UV additives. The resin also contains acrylic monomers to reduce long term yellowing of the laminates. The resin is also slightly tinted Blue to improve the optical properties.
Applications & Uses
- Markets
- Applications
- Composites End Use
- Composites Processing Methods
Properties
- Color (Properties)
- Typical Liquid Resin Properties
Value Units Test Method / Conditions Viscosity (at 25°C, Brookfield LVF, SP3, 60 rpm) 175 - 225 cPs BS 2782: 1980 Refractive Index 1.5272 - 1.528 - BS 2782: 1980 Acid Value 25 - 35 mg KOH/g BS 2782: 1980 Solid Content 55 - 60 % BS 2782: 1980 Stability (at 25°C) 6 Months BS 2782: 1980 Gel Time (at 25°C, using (Crystic PDME 074 100 pbw, Cobalt (1%) 1.2 pbw Catalyst M 1 pbw)) 10 - 15 Minutes BS 2782: 1980 - Resin Properties - Unfilled Casting (Cured)
Value Units Test Method / Conditions Barcol Hardness (Model GYZ 934-1) 46 - BS 2782: 1980 Water Absorption (24h, at 23°C) 20 mg BS 2782: 1980 Deflection Temperature (under load 1.80 MPa) 65 ºC BS 2782: 1980 Elongation (at break, 20°C) 2 % BS 2782: 1980 Tensile Strength 71 MPa BS 2782: 1980 Tensile Modulus 3700 MPa BS 2782: 1980 Volumetric Shrinkage 6 % BS 2782: 1980 - Note
The curing schedule was 24 hrs at 20 °C, followed by 3h at 80 °C, except in determining the deflection temperature, where the schedule was 24 hrs at 20 °C, 5h at 80 °C, 3h at 120 °C.
Technical Details & Test Data
- Transparency
Crystic PDME 074 shows good transparency, as the Refractive Index of cured Crystic PDME 074 (RI = 1.5272 – 1.528) matches with that of the E powder bound glass matt. In order to obtain good clarity, the glass matt must be clean, dry, and have a proper high solubility binder for roofing sheet production.
- Curing
Crystic PDME 074 is non-accelerated and requires addition of Crystic Low Color accelerator, Accelerator LC up to 0.6 %. The recommended catalyst is Butanox M50. Shortly before use, the correct amount of catalyst should be added and stirred thoroughly into the mixture.
Packaging & Availability
- Packaging Type
- Packaging
Crystic® PDME 074 is supplied in 225 kg steel containers. For the purpose of shipping, Crystic® PDME 074 is class 3.0 in the IMCO Code (Page 3153)
Storage & Handling
- Storage
- To ensure maximum stability and maintain optimum properties, polyester resin should be stored in closed containers, maintained below 25°C and away from heat sources and sunlight. All storage should conform to local fire and building codes. Drum stock should be kept to a reasonable minimum with first-in, first-out rotation.
- Where bung-in-head containers are stored outside, it is recommended that these be stored in a horizontal position to avoid the ingress of water.
- The shelf life of the resin under these conditions is three (3) months.