Address:
,China
Main Products:
Polyurethane casting prepolymer,Thermoplastic Polyurethanes,TPU granules,Polyurethane resin,Polyurethane elastomers
Polyurethane System for Air Filter
DLQ-A/ DLQ-B
Product introduction
Component A of polyurethane system for air filter (DLQ-A)is composed of hyperactive polyether polyols, cross linking agent,compound catalyst and so on. Component B(DLQ-B)is modified isocyanate, and it is micro-pore elastomer which adopts cold molding. Iexcelt has lent mechanical and anti-fatigue property. Also, with short production cycle,high efficiency and low energy consumption . So it is widely applied to manufacture air filter cores of cars, ships, construction machinery, generator and other internal combustion machinery's .
Typical properties
| DLQ-A | DLQ-B |
Appearance Hydroxyl value mgKOH/g -NCO% content % Viscosity(25°C) mPa.S Density(20°C) g/ml Storage temperature °C Storage stability month | Pale yellow viscous liquid 70-90 -- 1000-2000 1.02±0.02 ≤25 6 | Brown liquid — 26-30 150-350 1.20±0.05 ≤25 >12 |
Store in original barrel in a dry place in recommending temperature
Recommended formula
| Component weight |
DLQ-A DLQ-B | 100 30-50 |
Reaction characteristics(material temperature is 20°C) actual value varies depending on processing conditions
| Manual mix | High pressure machine |
Cream time s Gel time s Tack-free time s Mold temperature °C Demould time min | 15-30 40-60 90-120 40-50 4-6 | 8-15 30-45 60-100 40-50 4-6 |
Typical foaming characteristics
Hardness Density Tensile strength Tear strength Elongation at break 40%compression ratio(70°C,22h) | Shore A Kg/m3 MPa N/mm % % | 20-50 300-1000 ≥0.9 ≥1.0 ≥90 ≤10 |