Donpipe 301 dej puag sib xyaw polyols rau cov kav dej rwb thaiv tsev
Donpipe 301 dej puag sib xyaw polyols rau cov kav dej rwb thaiv tsev
INTRODUCTION
Cov khoom no yog ib hom kev sib xyaw polyols nrog dej ua tus neeg sawv cev foaming, uas tau tshawb fawb tshwj xeeb rau PUF nruj los tsim cov kav dej thermal.Nws yog dav siv nyob rau hauv cov kav dej, liquefied natural gas khiav kav, roj kav thiab lwm yam teb.Cov yam ntxwv yog raws li nram no:
(1) zoo flowability, los ntawm kev tswj cov mis kom haum cov yeeb nkab diameters sib txawv.
(2) kev ua haujlwm siab kub-ua haujlwm, ua haujlwm ntev hauv 150 ℃
(3) zoo heev uas tsis muaj qhov ntsuas kub stability
PHYSICAL PROPERTY
| Qhov tshwm sim | Lub teeb daj rau xim av pob tshab kua |
| Hydroxyl tus nqi mgKOH/g | 250-450 |
| Dynamic viscosity (25 ℃) mPa.S | 300-600 |
| Qhov ceev (20 ℃) g / ml | 1.10-1.16 Nws |
| Cia kub ℃ | 10-25 |
| Cia ruaj khov hli | 6 |
TECHNOLOGY THIAB REACTIVITY(Qhov ntsuas kub yog 20 ℃, qhov tseeb tus nqi yog txawv raws li cov yeeb nkab txoj kab uas hla thiab kev ua haujlwm.)
|
| Kev sib xyaw ua ke | Kev kub siab tshuab |
| Ratio (POL/ISO) | 1:1.40-1.1.60 Nws | 1:1.40-1.60 Nws |
| Sawv sij hawm s | 20-40 | 15-35 : kuv |
| Gel time s | 80-200 | 80-160 : kuv |
| Tack free time s | ≥150 | ≥150 |
| Dawb ntom ntom kg / m3 | 34.0-36.0 Nws | 33.0-35.0 Nws |
FOAM kev ua yeeb yam
| Pwm ntom | wb 6343 | 60-80kg / m3 |
| Kaw-cell tus nqi | wb 10799 | ≥90% |
| Thermal conductivity (15 ℃) | wb 3399 | ≤ 33mW / (mK) |
| Compression zog | GB / T8813 | ≥250kPa |
| Kev nqus dej | wb 8810 | ≤3 (V / V)% |
| Dimensional stability 24h -30 ℃ | GB / T8811 | ≤ 1.0% |
| 24h 100 ℃ | ≤ 1.5% |
Cov ntaub ntawv muab los saum toj no yog tus nqi raug, uas tau sim los ntawm peb lub tuam txhab.Rau peb lub tuam txhab cov khoom, cov ntaub ntawv suav nrog hauv txoj cai lij choj tsis muaj kev txwv.
