Negotiable
The date of payment from buyers deliver within days
Shandong
Long-term effective
2021-10-17 14:54
339
hengjiujuanzhi(Mr.)
Shandong
No.001 Fengming Road, Guoli Town, Huantai County, Zibo City, Shandong Province, China
Polyether based Casting Polyurethane prepolymer
1.Polyether based polyurethane prepolymer are recommended for applications where parts undergo dynamic stress, etc, they incur lower heat build-up. They also have advantages in high resilience, low temperature performance and resistance to water attack(hydrolysis). Polyethers also have lower viscosity and specific gravity.
2. Specifications,Application and operation details
PPG/TDI system Casting Polyurethane prepolymer
Item |
Type |
|||
HJ-1880 |
HJ-1885 |
HJ-1890 |
HJ-1895 |
|
NCO% Content |
3.7±0.2 |
4.0±0.2 |
5.0±0.2 |
6.2±0.2 |
Density 25℃/(g/cm³) |
1.10 |
1.10 |
1.10 |
1.10 |
Viscosity 80℃/mpa·s |
500-700 |
500-700 |
400-600 |
150-200 |
Appearance at 25℃ |
Colorless transparent liquid |
|||
Mix Temperature ℃ Prepolymer /Moca |
80℃/115℃ |
80℃/115℃ |
75℃/115℃ |
75℃/115℃ |
Gel Time /min |
8-12 |
6-8 |
3-5 |
2-4 |
Vulcanization Time (h) |
25-16 |
25-16 |
25-16 |
25-16 |
Physical Properties | ||||
Hardness (Shore A) |
80±2 |
85±2 |
90±2 |
95±2 |
Tensile Strength (Mpa) |
12-15 |
14-18 |
20-24 |
22-26 |
100% Modulus (Mpa) |
7-8 |
8-9 |
10-11 |
11-12 |
300% Modulus (Mpa) |
-- |
11-12 |
16-17 |
20-21 |
Elongation at Break (%) |
260-320 |
300-400 |
340-420 |
350-420 |
Tear Strength (KN/m) |
50-55 |
65-75 |
80-90 |
85-95 |
Compression permanent deformation % |
6-8 |
6-8 |
4-6 |
4-6 |
DIN Abrasion loss(mm³) |
≤160 |
≤150 |
≤140 |
≤130 |
Resilience %/25℃ |
20-24 |
19-22 |
18-20 |
16-18 |
- Product application: Rod and bar, sheet and plate, seal, drag roller, caster, grinder lining, pipe lining, miscellaneous parts and other products. - Operation details: After vacuum degasing at 75-85 ℃, the prepolymer is mixed with melted MOCA for casting and vulcanization. It is suitable for manual and mechanical operation. - Storage: Store in a cool and dry place and use up as soon as possible after opening; If it cannot be used up at one time, it shall be sealed with nitrogen; The second opening needs to be used for defoaming, and the original storage period is six months. - Packing: 20kg or 200kg iron drum |
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