TU 2254-005-02748978-2004
Two-component polyurethane foam system based on “Korundinol 315-1” or “Korundinol 315-2” (Component “А”) and “Korundinat
PM” (Component “B”) is designed for heat insulation of pipelines by shells or
by annular tube method. Chladone 141b is used as
foaming agent.
Characteristics of Components
а) Component “A” – “Korundinol 315-1” or “Korundinol 315-2”
|
Name of Parameter
|
Value
|
|
Korundinol 315-1
|
Korundinol 315-2
|
|
Appearance
|
Colourless or yellow liquid without visible contaminating impurities
|
|
Hydroxyl number, mg KOH/g, in
the range
|
380
- 440
|
400
- 460
|
|
Mass part of water, %, in the range
|
1.8
– 2.3
|
1.8-2.3
|
b) Korundinat PM (Component
“B”)
According to TU 2472-002-02748978-2004 or foreign
analogue.
Processing Technique
Ratio of mixture А : B = 100 : 140 (by weight)
|
Name of Parameter
|
Value
|
|
Start
time, s, in the range
|
35 – 55
|
|
Gelation
time, s, in the range
|
170 - 200
|
|
Apparent
density under free foaming, kg/m3, in the range
|
36 – 41
|
|
Appearance
of hardened polyurethane foam and structure on vertical section
|
Rigid
foamed material. Fine-cellular structure with a small
number of larger cells
|
Physical and Mechanical
Properties of PU Foam
|
Name of Parameter
|
Value
|
|
А-315-1
|
А-315-2
|
|
Number of closed pores, %, min.
|
88
|
88
|
|
Heat conductivity,
W/mK, max.
|
0.033
|
0.033
|
|
Compression strength at 10% deformation, MPa, min.
|
0.3
|
0.3
|
|
Water absorption at boiling, %, max.
|
10
|
10
|
|
Heat-resistance by Vika, 0С, min.
|
150
|
150
|
|
Apparent density in the product,
kg/m3, min.
|
60
|
60
|
Packing. Component “А” is poured into 100-250 dm3aluminium drums according to GOST 21029, steel drums according
to GOST 6247, GOST 13950, GOST 26155, TU 38.1011264.
Guarantee storage period:
- of component A - 3 months from day
of manufacture;
- of component B - 6 months from day
of manufacture.
