PRODUCT DESCRIPTION
LYR1795 is a fully blended system including HCFC141b and a fire retardant. It is designed
for processing using a continuous lamination machine. Moulded densities will be 35-40 kg/m³.
This system is designed to meet DIN 4102 Class B2.
LYR1795 is a fully blended system including HCFC141b and a fire retardant. It is designed
for processing using a continuous lamination machine. Moulded densities will be 35-40 kg/m³.
This system is designed to meet DIN 4102 Class B2.
CHEMICAL PROPERTIES
LYR1795 A(Polyol Blend)
| Appearance | Brown Liquid |
| Specific Gravity @25°C | 1.19 - 1.21 |
| Viscosity @25°C | 180 - 260 mPas |
LYR1795 B (Isocyanate)
| Appearance | Dark Brown Liquid |
| Specific Gravity @25°C | 1.22 - 1.26 |
| Viscosity @25°C | 150 - 250 mPas |
TYPICAL REACTION DATA
Laboratory
| Mixing Ratio (A : B) | / |
| Chemical Temperatures (°C) | / |
| Cream Time (s) | / |
| Gel Time (s) | / |
| Free Rise Core Density (kg/m )3 | / |
TYPICAL PHYSICAL PROPERTIES
| Property | Test Standard | Unit | Value |
| Overall Moulded Density | - | kg/m3 | 40 |
| Core Density | - | kg/m3 | 36 |
| Compressive Strength - Parallel - Perpendicular | ASTM D1621 | kPa | 202 186 |
| Dimensional Stability 48 hours exposure @ -15°C @100°C | ASTM D2126 | % volume change | 0.1 2.6 |
| Thermal Conductivity | ASTM C518 | W/m°C | 0.0194 |
STORAGE OF MATERIALS
The materials are sensitive to humidity and partially used drums should be tightly sealed to
prevent the ingress of moisture.
LYR1795A (Polyol Blend)
The Polyol blend has a shelf life of three months from date of manufacture when stored indoors
at temperatures of 20-30°C. The Polyol blend should be thoroughly mixed before use.
LYR1795B (Isocyanate)
The Isocyanate has a shelf life of one year from date of manufacture when stored indoors at
temperatures of 20-30°C. Avoid storage temperatures of below 0°C (as some crystallization
may occur) or above 50°C (as formation of insoluble so lids may occur).
