MDI Ob Cheeb Tsam PTMEG Hom Casting PU
PTMEG raws li polyurethane prepolymer 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.
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PTMEG raws li polyurethane prepolymer 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 muaj qis dua viscosity thiab lub ntiajteb txawj nqus, thiab MDI raws li cov khoom muaj qis isocyanate tsw dua li TDI hom zoo sib xws thiab muaj superior hydrolysis tsis kam thiab feem ntau muaj siab dua resilience.
Nrog siab NCO cov ntsiab lus thiab kev cuam tshuam catalyst, cov tshuaj tiv thaiv tus nqi ntawm MDI feedstock yog 1-2 lub sij hawm sai dua li ntawm TDI series feedstock.Vim hais tias ntawm lub siab resilience thiab saj zawg zog, MDI series cov khoom yog zoo dua li TDI series cov khoom nyob rau hauv daim ntawv thov cov nyhuv ntawm sieve phaj. Kev txhim kho ntawm elasticity yuav pab tau los txhim kho qhov cuam tshuam hnav tsis kam thiab kev tu tus kheej ntawm cov khoom.
Vim tias muaj kev ua haujlwm siab ntawm MDI, daim ntawv thov kub ntawm MDI raw cov ntaub ntawv yog qis dua li ntawm TDI series raw cov ntaub ntawv txhawm rau tiv thaiv qhov degradation ntawm lub cev khoom ntawm cov khoom kawg los ntawm tus kheej-polymerization ntawm raw cov ntaub ntawv. Lub thermal stability thiab kub tsis kam ntawm MDI cov ntaub ntawv yog qis dua li ntawm TDI series. Qhov laj thawj tseem ceeb yog tias cov crystallinity thiab kub tsis kam ntawm MOCA, cov khoom siv tseem ceeb ntawm TDI series, zoo dua li cov MDI saw extender BDO.
Specifications
Hom | HJ2285M | HJ2290M | HJ2295M |
NCO content /% | 6.0±0.2 | 7.5±0.2 | 8.8±0.2 |
Qhov tshwm sim hauv 20 ℃ | PTMEG hom, dawb khoom | ||
1,4-BD dosage (100gPUP)/g | 6.2 | 7.7 | 9.1 |
Viscosity (85 ℃) / mPa · s | 1300-1500 | 900-1100 | 750-850 |
Sib tov kub / ℃ (PUP / 1.4BD) | 85/40 | 85/40 | 80/40 |
Catalyst ntau npaum li cas (1000gPUP) / g | 3-10 (tus nqi ntxiv sib txawv raws li lub sijhawm gel xav tau) | ||
Lub sijhawm gel / min | 8—10 | 5—7 | 4—6 |
Lub sij hawm Vulcanization (100-110 ℃) / h | 24-48 | 24-48 | 24-48 |
Hardness (ntaub A) | 85±2 | 90±2 | 95±2 |
Tensile zog / MPa | 34-39 | 37-42 | 43-48 |
100% Modulus / MPa | 4—6 | 5—8 | 10—14 |
300% Modulus / MPa | 10—15 | 13—18 | 20—30 |
Elongation ntawm so / % | 360-460 | 560-660 | 440-540 |
Tear zog (KN / m) | 60-70 | 95-105 | 105-115 |
Rov qab /% | 48-50 | 46-48 | 45-47 |
Lub ntiajteb txawj nqus tshwj xeeb (25 ℃) (g / cm3)3） | 1.11 | 1.11 | 1.12 |
DIN Abrasion poob /mm³ | ≤38 | ≤35 | ≤32 |
Cim npe nrov: mdi ob componment ptmeg hom casting pu, Tuam Tshoj, manufacturers, hoobkas, yuav
Tsis muaj
