MDI Prepolymer
ugumu: pwani A 75A - pwani A 95A
Bidhaa hiyo ina sifa ya upinzani mzuri wa kuvaa, ushujaa na mali bora za mitambo.
Hutumika kutengeneza bidhaa za elastomer za polyurethane kama vile magurudumu ya mpira, sahani za ungo na pete za kuziba.
Mfano
| D2560 | D2575 | D2590 | D3565 | D3575 | D3590 |
NCO/% | 6.0±0.2 | 7.5±0.2 | 9.0±0.2 | 6.5±0.2 | 7.5±0.2 | 9.0±0.2 |
Hali katika 20 ℃ | PTMG mfumo, nyeupe imara | Mfumo wa polyester, nyeupe imara | ||||
BDO100g Prepolymer /g | 6.1 | 7.8 | 9.3 | 6.8 | 7.8 | 9.3 |
Mnato (85℃)/mPa·s | 1400 | 1000 | 750 | 1400 | 1200 | 1000 |
Kuchanganya halijoto /℃ (Prepolymer /1,4BD) | 80/40 | 80/40 | 80/40 | 80/40 | 80/40 | 80/40 |
Wakati wa gel / min | 10 | 8 | 7 | 10 | 8 | 7 |
Muda wa baada ya kuathiriwa (110℃)/h | 48 | 48 | 48 | 48 | 48 | 48 |
Ugumu (Pwani A) | 87±2 | 90±2 | 95±2 | 85±2 | 90±2 | 95±2 |
100% Modulus/MPa | 6 | 9.2 | 12.6 | 5 | 8.6 | 12.3 |
300% Modulus /MPa | 17 | 16.6 | 18.9 | 10 | 19.7 | 29.1 |
Nguvu ya mkazo/MPa | 44 | 43 | 45 | 50 | 46 | 55 |
Kurefusha / % | 472 | 683 | 500 | 540 | 580 | 530 |
Nguvu ya machozi / (KN/m) | 75 | 110 | 130 | 82 | 117 | 132 |
Kurudi nyuma / % | 61 | 64 | 55 | 43 | 35 | 39 |
Uzito (24℃)/(g/cm3) | 1.11 | 1.11 | 1.12 | 1.23 | 1.26 | 1.24 |
Din wear /mm³ | 36 | 44 | 44 | 32 | 35 | 38 |
Andika ujumbe wako hapa na ututumie