Application:
Can be used to make rods,wheel,sealing ring,sieve palste and other polyurethance elastomers
Characteristics:The wares enjous excellents abrasion resistance,good oil resistance,and nice
mechanical preoperty.The ware can be made into colorful by adding color pigment into Pu prepolymer
Operation Points: After vacuum degassing at 80-85℃,blending with melted MOCA,,
degassing and then casting,vulcanization molding.This is apply to manual or casting machines
Polyester/TDI System - prepolymer
Type | DHK2180 | DHK2185 | DHK2190 | HK2195 | HK2198 | HK2170D |
NCO content % | 3.0±0.3
| 3.6±0.2
| 4.3±0.3
| 5.0±0.2 | 6.0±0.2 | 7.0±0.2 |
Appearance |
White solid
| |||||
MOCA(g/100g) | 8.6-10.5 | 10.5-11.2
| 11.7-13.2
| 14.5 | 17.2 | 20.0 |
Viscosity(85℃) /mPa·s | 2000-2500 | 1800- 2100 | 1100-1800 | 1100 | 900 | 800 |
Mixing Temperature /℃ （Prepolymer/MOCA） | 85/120 | 85/120
| 80/120 | 80/120 | 75/120 | 75/120 |
Gel time/min | 5 | 9
| 4
| 6 | 5 | 4.5 |
Post cure time(100℃)/h | 10 | 10
| 10
| 10 | 10 | 10 |
Hardness（Shore A） | 82±3 | 85±3
| 90±3 | 94±3 | 97±3 | 72±3（D） |
100% Modulus /MPa | 4.0-5.1 | 4.2-5.1 | 5.7-6.9
| 46 | 54 | 62 |
300% Modulus /MPa | 8.5-9.8 | 8.3-8.5 | 10.8-13.2
| 8.6 | 11.5 | 18.0 |
Tensile strength /MPa | 45-49 | 48-49 | 47-50
| 15.5 | 21.3 | 35.7 |
Elongation at break/ % | 750-690 | 670-650 | 680-600 | 600 | 530 | 410 |
Tear Strength /(KN/m) | 61-88 | 75-85 | 78-100
| 112 | 124 | 152 |
Tear Strength (KN/m) | 25-38 | 40 | 36-45
-
- | 45 | 49 | 50 |
Rebound / % | 38-44 | 36 | 49-39
| 37 | 33 | 33 |
Abrasion loss /mm³ | 41-44 | 40 | 43-55 | 51 | 57 | 56 |
Type | DHK2175 | DHK2172 | DHK2175P | DHK2180P | DHK2192P | DHK2198P |
NCO content /% | 2.1±0.1 | 2.1±0.1 | 3.3±0.2 | 3.6±0.2 | 6.0±0.2 | 9.0±0.2 |
Appearance at 20℃ | White solid
| |||||
MOCA/g /100g | 7.2 | 6 | 9.5 | 10.5 | 17.5 | 25.5 |
Viscosity (/85℃) /mPa·s | 2800 | 3800 | 1900 | 1700 | 1500 | 600 |
Mixing temperature/℃ (Prepolymer/MOCA) | 85/120 | 90/120 | 90/120 | 90/120 | 80/120 | 70/110 |
Gel time /min | 16 | 9 | 9 | 8 | 6 | 2 |
Post cure time(100℃ )/h | 10 | 10 | 10 | 10 | 10 | 10 |
Hardness (Shore A) | 76±2 | 72±2 | 77±2 | 82±2 | 94±2 | 75±2(D) |
100% Modulus /MPa | 3.4 | 2.8 | 3.0 | 3.3 | 9.9 | 34.5 |
300% Modulus /MPa | 4.1 | 4.4 | 4.2 | 6.1 | 27.5 | - |
Tensile strength /MPa | 40 | 39 | 43 | 46 | 50 | 60 |
Elongation at break / % | 700 | 770 | 800 | 550 | 400 | 250 |
Tear strength )/KN/m | 55 | 56 | 46 | 51 | 95 | 180 |
Tear strength/ KN/m | 19 | 21 | 17.3 | 28 | 45 | 52 |
Rebound / % | 42 | 47 | 55 | 50 | 28 | 40 |
Abrasion loss /mm3 | 33 | 38 | 49 | 40 | 54 | 69 |
Storage: Store in a cool and dry place,If you can’t use it up at a time,filling nitrogtn gas and then
sealing it. The storage time of original packing is 6months
Packing : 20kgs/drum or 200kg/drum
