Waterborne polyurethane 2818 is a kind of anionic aromatic waterborne polyurethane dispersion, which is mainly used in the middle and bottom coatings of all kinds of leather.
Item | Indicator | unit | Test Methods |
Emulsion Appearance | Translucent emulsion | Visual Inspection | |
Solid content | 30±2 | % | 150℃30min,bellows oven |
PH value (25℃) | 7-9 | GB/T 6920-1986 | |
Viscosity (25℃) | <250 | mPa·S | GB/T 2794-2013 |
Modulus (100%) | ≈0.7 | Mpa | GB/T 528-2009 |
Tensile strength | ≈6 | Mpa | GB/T 528-2009 |
Elongation at break | >1400 | % | GB/T 528-2009 |
Solvent and content | acetone | theoretical value |
Item | Indicator | unit | Test Methods |
Emulsion Appearance | Translucent emulsion | Visual Inspection | |
Solid content | 30±2 | % | 150℃30min,bellows oven |
PH value (25℃) | 7-9 | GB/T 6920-1986 | |
Viscosity (25℃) | <250 | mPa·S | GB/T 2794-2013 |
Modulus (100%) | ≈0.7 | Mpa | GB/T 528-2009 |
Tensile strength | ≈6 | Mpa | GB/T 528-2009 |
Elongation at break | >1400 | % | GB/T 528-2009 |
Solvent and content | acetone | theoretical value |










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