MDI Prepolymer
caledwch: glan A 75A – lan A 95A
Mae gan y cynnyrch nodweddion ymwrthedd gwisgo da, gwydnwch a phriodweddau mecanyddol rhagorol.
Fe'i defnyddir ar gyfer gwneud cynhyrchion elastomer polywrethan amrywiol fel olwynion rwber, platiau hidlo a modrwyau selio.
Model
| 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 |
Nodwch ar 20 ℃ | System PTMG, solet gwyn | System polyester, solet gwyn | ||||
BDO100g Prepolymer /g | 6.1 | 7.8 | 9.3 | 6.8 | 7.8 | 9.3 |
Gludedd (85 ℃)/mPa·s | 1400 | 1000 | 750 | 1400 | 1200 | 1000 |
Tymheredd cymysgu / ℃ ( Prepolymer / 1,4BD) | 80/40 | 80/40 | 80/40 | 80/40 | 80/40 | 80/40 |
Amser gel / mun | 10 | 8 | 7 | 10 | 8 | 7 |
Amser ar ôl vulcanization (110 ℃) / h | 48 | 48 | 48 | 48 | 48 | 48 |
Caledwch (Ar lan A) | 87±2 | 90±2 | 95±2 | 85±2 | 90±2 | 95±2 |
100% Modwlws/MPa | 6 | 9.2 | 12.6 | 5 | 8.6 | 12.3 |
300% Modwlws /MPa | 17 | 16.6 | 18.9 | 10 | 19.7 | 29.1 |
Cryfder tynnol /MPa | 44 | 43 | 45 | 50 | 46 | 55 |
Elongation / % | 472 | 683 | 500 | 540 | 580 | 530 |
Cryfder rhwyg / (KN/m) | 75 | 110 | 130 | 82 | 117 | 132 |
Adlam / % | 61 | 64 | 55 | 43 | 35 | 39 |
Dwysedd (24 ℃) / ( g / cm3) | 1.11 | 1.11 | 1.12 | 1.23 | 1.26 | 1.24 |
Yn gwisgo /mm³ | 36 | 44 | 44 | 32 | 35 | 38 |
Ysgrifennwch eich neges yma a'i hanfon atom