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.
CHEMICAL PROPERTIES
LYR1795 A(Polyol Blend)
Appearance |
Brown Liquid |
Specific Gravity @25°C |
1.19 - 1.21 |
Viscosity @25°C |
180 - 260 mPas |
LYR1795B (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).