Description
Hydrolysis resistance and low temperature resistant
Key features
The material has good hydrolysis resistance and low temperature resistance.
Typical properties
|
Hydrolysis
resistance and low Temperature Resistant
|
HRL-
1021
|
HRL-1022
|
HRL-1023
|
|
Prepolymer
|
Appearance (25℃)
|
viscous liquid
|
Waxy solid
|
Waxy solid
|
|
NCO Content(%)
|
5.0~5.5
|
4.5~5.0
|
4.5~5.5
|
|
Using Mixture Ratio
(PHR)
|
14.4~16.0
|
13.0~14.5
|
13.2~15.8
|
|
Life in the Reaction Kettle
(75~78℃/min)
|
3~5
|
8~10
|
5~6
|
|
Physical Properties of
Finished Products
|
Hardness (Shore
A)
|
90±5
|
90±5
|
90±5
|
|
Tensile Strength (MPa)
|
34.7
|
48.2
|
68.3
|
|
Tearing Strength
(kN/m)
|
38.5
|
112.0
|
133.1
|
|
Elongation at Break
(%)
|
320
|
380
|
431
|
|
Available Using Environment(℃)
|
-35
|
-70
|
-70
|
Application
-Mainly used in the production of water pump parts, marine coating, pipe fittings and other polyurethane products.
Usage method
-Can be used for manual, but also suitable for the operation of pouring machine, chain extender is MOCA or other chain extender.
Attention
prepolymer storage should be placed in a low temperature drying place, at higher temperatures (more than 75 degrees Celsius) should not be heated for more than 3 hours.
After the opening of the prepolymer should be used up as soon as possible, if not exhausted with nitrogen seal.
The storage period of unopened prepolymer is three months.
