PTMEG Raws li Casting Polyurethane Prepolymer
Lawv kuj muaj qhov zoo ntawm kev ua haujlwm siab, tsis muaj qhov kub thiab txias thiab tiv thaiv dej tawm tsam (hydrolysis). Polyethers kuj tseem muaj qis viscosity thiab lub ntiajteb txawj nqus.
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PTMEG raws li Casting Polyurethane prepolymer
1. PTMEG raws li polyurethane prepolymer yog qib siab dua ntawm Polyether prepolymer, lawv raug pom zoo rau cov ntawv thov uas qhov chaw muaj kev ntxhov siab, thiab lwm yam, lawv ua rau muaj cua sov tsawg dua. Lawv kuj muaj qhov zoo ntawm kev ua haujlwm siab, tsis muaj qhov kub thiab txias thiab tiv thaiv dej tawm tsam (hydrolysis). Polyethers kuj tseem muaj qis viscosity thiab lub ntiajteb txawj nqus.
2. Cov lus qhia tshwj xeeb, Daim ntawv thov thiab cov lus qhia ua haujlwm.
PTMEG/TDI system Casting Polyurethane prepolymer
Yam khoom | Hom | |||
HJ-2185 | HJ-2190 | HJ-2195 | HJ-2197 | |
NCO% Content | 3.5±0.2 | 4.2±0.2 | 6.0±0.2 | 6.5±0.2 |
Qhov ceev 25 ℃ / (g / cm³) | 1.11 | 1.11 | 1.12 | 1.12 |
Viscosity 80 ℃ / mpa·s | 900-1100 | 800-1000 | 700-900 | 600-800 |
Qhov tshwm sim ntawm 25 ℃ | Colorless pob tshab kua | |||
Mix kub ℃ Prepolymer / Moca | 85℃/115℃ | 80℃/115℃ | 75℃/115℃ | 75℃/115℃ |
Gel Sijhawm / min | 13-18 | 10-15 | 6-10 | 3-5 |
Lub sijhawm Vulcanization (h) | 25-16 | 25-16 | 25-16 | 25-16 |
Lub cev muaj zog | ||||
Hardness (Shore A) | 85±2 | 90±2 | 95±2 | 97±2 |
Tensile zog (Mpa) | 25-28 | 33-38 | 38-45 | 40-46 |
100% Modulus (Mpa) | 11-12 | 14-16 | 16-18 | 18-20 |
300% Modulus (Mpa) | 18-20 | 28-30 | 38-42 | 40-43 |
Elongation ntawm Break (%) | 360-420 | 350-400 | 280-350 | 250-300 |
Tear Zog (KN / m) | 60-65 | 75-85 | 90-100 | 95-105 |
Compression ruaj khov deformation% | 4-6 | 4-6 | 2-4 | 2-4 |
DIN Abrasion poob (mm³) | ≤45 | ≤40 | ≤40 | ≤40 |
Kev ua haujlwm siab% / 25 ℃ | 40-45 | 35-40 | 28-32 | 26-30 |
- Daim ntawv thov khoom: PU Rollers, casters, seals, pistons, faib cov ntxaij vab tshaus, flotation tshuab impellers, forklift log tsheb, pwm, slurry twj tso kua mis thiab lwm yam khoom. - Cov ntsiab lus ua haujlwm: Tom qab lub tshuab nqus tsev degasing ntawm 75-85 ℃, prepolymer yog tov nrog melted MOCA rau casting thiab vulcanization. Nws yog haum rau phau ntawv thiab txhua yam kev ua haujlwm. - Cia: Khaws rau hauv qhov chaw txias thiab qhuav thiab siv kom sai li sai tau tom qab qhib; Yog tias nws tsis tuaj yeem siv rau ib zaug, nws yuav tsum tau ntim nrog nitrogen; Qhov thib ob qhib yuav tsum tau siv rau defoaming, thiab thawj lub sij hawm cia yog rau lub hlis. - Ntim: 20kg lossis 200kg hlau nruas | ||||
Cim npe nrov: ptmeg raws li casting polyurethane prepolymer, Tuam Tshoj, manufacturers, hoobkas, yuav
