Description
Polyurethane prepolymer polyester TDI system
Key features
General purpose products, the most widely used.
High mechanical strength, good wear resistance.
Good oil resistance, solvent resistance, heat resistance.
Typical properties
|
Plyester tdi system
|
Pes-610
|
Pes-611
|
Pes-612
|
Pes-613
|
Pes-614
|
Pes-615
|
|
Prepolymer
|
Appearance (25℃)
|
Waxy solid
|
Waxy solid
|
Waxy solid
|
Waxy solid
|
Waxy solid
|
Waxy solid
|
|
Nco content(%)
|
2.4~2.6
|
3.0~3.5
|
3.6~4.2
|
4.0~4.5
|
4.5~4.8
|
5.0~5.8
|
|
Using mixture ratio (phr)
|
6.9~7.5
|
8.6~9.5
|
9.0~10.0
|
11.0~12.0
|
13.5~14.5
|
15.0~16.0
|
|
Life in the reaction kettle(75-78℃/min)
|
5~7
|
5~7
|
5~7
|
5~7
|
3~5
|
3~5
|
|
Physical properties of finished products
|
Hardness (shore a)
|
60±5
|
75±2
|
80±2
|
85±2
|
90±2
|
95±2
|
|
Tensile strength (mpa)
|
28.7
|
33.5
|
42.3
|
45.5
|
48.8
|
52.6
|
|
Tearing strength (kn/m)
|
35.9
|
49
|
52
|
55.1
|
58.3
|
60
|
|
Elongation at break(%)
|
498
|
474
|
451
|
440
|
410
|
337
|
|
Akron abrasion(cm3/1.61km)
|
0.05
|
0.03
|
0.03
|
0.02
|
0.02
|
0.02
|
Application
Mainly used in the production of ordinary polyurethane elastomer products, such as a variety of industrial components, roller, rubber roller, rubber, oil seal, cushioning materials, plates, etc.
Usage method
Suitable for manual and high temperature casting machine operation, chain extender is MOCA.
Attention
The prepolymer should be stored at low temperature and dry place, avoid the moisture and moisture when used
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.
If you want to add color paste or other materials, keep the water content below 0.1%, and consider the compatibility of additives.
