TU 2254-004-02748978-2004
The system is designed
for manufacture of cold-
and warm-moulded
flexible articles used in automotive
and furniture industries.
Two-component system consists of component “A” – “Korundinol
785” and
component “B” – “Korundinat 785”, which is a mixture of isocyanates or toluene diisocyanate,
or their foreign analogues.
Characteristics of Component “A”:
|
Name of Parameter
|
Value
|
|
Appearance
|
Viscous
fluid of light-yellow colour with slight opalescence
|
|
Mass
part of water, %, in the range
|
2.4 – 2.8
|
|
Hydroxyl
number, mg KOH/g
|
125 - 130
|
Recommended ratio of mixture at processing:
Component
“A” : Component “B” = 300 : 100 (by weight).
Process Test Parameters
|
Name of Parameter
|
Value
|
|
Start
time, s
|
11 – 13
|
|
Gelation
time, s
|
60 - 63
|
|
Apparent
density, kg/m3
|
27 - 28
|
Physical and Mechanical
Properties of PU Foam*
|
Name of Parameter
|
Value
|
|
Apparent density, kg/m3 (depending on the compound
consumption)
|
30-50
|
|
Breaking
stress, kPa
|
80 - 120
|
|
Elongation
at break, %
|
80 - 100
|
|
Hardness
at 40% indentation, N, min.
|
250 - 300
|
|
Cyclic
compression fatigue
|
2 – 2.5
|
|
Rigidity
degradation in articles, max.
|
2.5 – 3.5
|
|
Rebound
elasticity, min.
|
55
|
* The given
indicators can be changed on
the customer’s request, depending on the process
characteristics.
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.
