Description
Printing roller, screen printing scraper
Key features
Can be used for organic solvents, such as esters, toluene, printing ink, water-based ink, ketones, etc.
Typical properties
|
Special field
|
SPF-561
|
SPF-562
|
SPF-563
|
|
Prepolymer
|
Appearance (25℃)
|
Waxy solid
|
viscous liquid
|
Waxy solid
|
|
NCO Content(%)
|
2.4~2.6
|
3.0~3.5
|
3.0~3.5
|
|
Using
Mixture Ratio (PHR)
|
6.9~7.5
|
7.1~8.3
|
7.1~8.3
|
|
Life
in the Reaction Kettle (75~78℃/min)
|
5~7
|
5~7
|
5~7
|
|
Physical
Properties of Finished Products
|
Hardness
(Shore D)
|
65±5
|
75±5
|
85±5
|
|
Tensile
Strength (MPa)
|
28.7
|
38.2
|
39.5
|
|
Tearing
Strength (kN/m)
|
35.9
|
67.5
|
56.4
|
|
Elongation
at Break (%)
|
498
|
710
|
231
|
|
TOL/EA/CYC Mixed Solvent
24h Expansion Rate（%）
|
﹢15
|
﹢9
|
﹢5
|
Application
Mainly used in the production of various kinds of printing roller, screen printing scraper, etc.
Usage method
Can be used for manual, some products are more suitable for the operation of pouring machine, chain extender are MOCA, E-300, BDO or special chain extender.
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.
