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SL-728 is an orthophthalic type unsaturated polyester resin with medium viscosity, high reactivity, good toughness, and excellent mechanical intensity, applicable to the manufacture of artificial marbles, table-surface plate, sanitary wares etc.
Technical Indexes of Liquid Resin | |||
Item | Unit | Value | Standard |
Appearance | Transparent Sticky Thick Liquid | Visual | |
Chroma (Pt-Co) | 25-35 | GB7193.7-92 | |
Acid Value | mgKOH/g | 16-21 | GB2895-82 |
Viscosity(25°C) | mPa.S | 800-1350 | GB7193.1-87 |
Gel Time | min | 4-8 | GB7193.6-87 |
Non-Volatile | % | 66-71 | GB7193.3-87 |
Thermal Stability(80°C) | h | ≥24 | GB7193.5-87 |
Note: Gel Time is tested under the condition of 25°C,airbath, 0.4ml cobalt isocaprylate solution and 0.4ml mekp being addedinto 50g resin. | |||
Performance Indexes of Resin Casting Substance | |||
Item | Unit | Value | Standard |
Barcol hardness≥ | Barcol | 35 | GB3854-1983 |
Tensile strength ≥ | MPa | 65 | GB2568-1995 |
Tensile modulus ≥ | MPa | 3000 | GB2568-1995 |
Elongation at break≥ | % | 5 | GB2568-1995 |
Flexural strength≥ | MPa | 95 | GB2570-1995 |
Flexural modulus≥ | MPa | 3100 | GB2570-1995 |
Impact strength≥ | KJ/m2 | 12 | GB2571-1995 |
H.D.T ≥ | °C | 65 | GB1634-1989 |
Note: Environmental Temperature for Experiment: 23±2°C; relative humidity: 50±5% | |||
Artificial Stone Resin