K-Resin KR21
K-Resin® KR21 is a new member of K-Resin® family of SBC materials with the properties of a thermoplastic elastomer. K-Resin® KR21 offers an exceptional high toughness. K-Resin® KR21 is mainly used for Styrenic polymers modification to enhance the impact properties and Environmental Stress Cracking Resistance (ESCR).
Key Features
- Outstanding Toughness
- Very High Elongation at Break
- ESCR Modification
- Excellent Low Temperature Toughness
- Low Density
- Low and Adjustable Hardness
Applications
- Impact Modification
- ESCR Improvement
- Reinforcement of Recycled ABS and HIPS
- Alternative to Plasticized PVC
Industries
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Grade Version
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Properties
Properties of K-Resin KR21
Property, Test Condition Standard Unit Values Rheological Properties Melt Volume Rate, 200 °C/5 kg ISO 1133 cm³/10 min 6 Mechanical Properties Izod Notched Impact Strength, 23 °C ISO 180/A kJ/m² No Break Charpy Notched Impact Strength, 23° C ISO 179/1eA kJ/m² No Break Charpy Unnotched, 23 °C ISO 179/1eU kJ/m² No Break Tensile Stress at Yield, 23 °C ISO 527 MPa no break Tensile Stress at Break, 23 °C ISO 527 MPa 15 Tensile Strain at Break, 23 °C ISO 527 % > 500 Tensile Modulus ISO 527 MPa 120 Flexural Strength, 23 °C ISO 178 MPa 3 Flexural Modulus, 23 °C ISO 178 MPa 100 Hardness, Shore D ISO 868 - 40 Thermal Properties Vicat Softening Temperature, VST/A/120 (10N, 120 °C/h) ISO 306 °C 48 Heat Deflection Temperature B; (annealed 4 h/80 °C; 0.45 MPa) ISO 75 °C 40 Optical Properties Refractive Index, Sodium D Line ISO 489 - 1.56 Light Transmission at 550 nm ASTM D 1003 % 89 Haze ASTM D 1003 % 5 Other Properties Density ISO 1183 kg/m³ 990 Moisture Absorption, Equilibrium 23 °C/50% RH ISO 62 % 0.07 Processing Linear Mold Shrinkage ISO 294-4 % 0.3 - 1 Melt Temperature Range ISO 294 °C 180 - 220 Mold Temperature Range ISO 294 °C 30 - 50 Typical values for uncolored products
Please note that all processing data stated are only indicative and may vary depending on the individual processing complexities.
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Processing
Processing of K-Resin KR21
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Safety Data Sheet