Muaj 30000 lub raj mis RFE hauv Tshuag. Muaj peev xwm xa khoom sai. Ntau qhov ntau nrog luv nqi ntxiv. Vam tias koj yuav tsis nco nws.
Yog tias koj xav tau, txais tos hu rau peb txhua lub sijhawm
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Email: alia@starskychemcial.com
Nqe lus piav qhia:
| Lub npe | RFE, RF |
| Molecular Formula | C21H12N3O6SP |
| CAS | 4151-51-3 |
| MW | 465 |
| Cim | neeg tsim khoom |
| Melting point | 84-86 ℃ |
| Qhov ceev ntawm 20 ℃ | kwv yees. 1.0g / cm3 |
| Assay of NCO | 7.2±0.2% |
| Assay ntawm methane | 27±1 |
| viscosity (20 ℃) | 3mpa wb |
| Solvent | Ethyl acetate hmoov |
| Flash point | -4 ℃ |
| Qhov tshwm sim | Yellow to dark violet kua. Nws cov xim tsis cuam tshuam rau lub zog boding. |
| Pob | 750 g / lub raj mis, tag nrho 20 lub raj mis hauv ib lub thawv, 180kg / chim, Los yog raws li cov neeg siv khoom thov. |
Ntxiv rau:Lub tuam txhab tuaj yeem tshawb fawb thiab tsim cov khoom tshiab raws li qhov tshwj xeeb xav tau ntawm peb cov neeg siv khoom.
Nta:RFE polyisocyanate yog ib qho zoo heev crosslinker rau cov nplaum raws li polyurethane, ntuj roj hmab thiab Synthesis roj hmab. RFE polyisocyanate kuj tseem siv tau los txhim kho cov nplaum ntawm cov khoom siv roj hmab. Nws tuaj yeem siv los ua crosslinker tsis yog Bayer's Desmodur RFE.
Kev siv: Ob-cov khoom nplaum yuav tsum tau siv nrog lub sijhawm siv tom qab muab tso rau hauv RFE. Lub sijhawm siv sijhawm ntev tsis yog tsuas yog cuam tshuam nrog cov ntsiab lus polymer ntawm cov nplaum, tab sis kuj tseem muaj lwm yam cuam tshuam (xws li resin, Antioxygen, plasticizer, hnyav, thiab lwm yam). Thaum ze rau lub sijhawm siv, feem ntau yog ob peb teev lossis ib hnub ua haujlwm, cov nplaum yuav nyuaj dua
ua haujlwm, thiab viscosity nce sai sai. Thaum kawg, nws dhau los ua jelly irreversible. 100 zoo nplaum, Hydroxyl polyurethane (Polyurethane account rau ib ncig ntawm 20%), RFE ua 4-7. chloroprene roj hmab (Rubber account rau ib ncig ntawm 20%), RFE ua 4-7.
Cia: Thov khaws cia rau hauv lub thawv ntim qub hauv qab 23℃, cov khoom tuaj yeem khaws cia ruaj khov rau rau lub hlis. Tag nrho cov Crosslinker series cov khoom yog rhiab heev rau cov dej noo; nws yuav tsim carbon dioxide thiab insoluble urea nyob rau hauv cov tshuaj tiv thaiv nrog dej. Yog tias raug huab cua los yog lub teeb, nws yuav ua rau kom cov xim hloov ntawm cov khoom, Tab sis cov tswv yim ua haujlwm yuav tsis cuam tshuam.
Kev txheeb xyuas qhov xwm txheej
Txoj Cai (EC) No 1272/2008
Flammable kua, Qeb 2 (H225)
Lub hom phiaj tshwj xeeb ntawm lub cev toxicity (ib zaug raug), Qeb 3 (H336)
Cov Lus Qhia 67/548/EEC lossis 1999/45/EC
Cov nplaim taws heev.
Rov ua dua tuaj yeem ua rau tawv nqaij qhuav lossis tawg. Vapors tuaj yeem ua rau qaug zog thiab kiv taub hau.
Txoj Cai (EC) No 1272/2008
Cov khoom tsim kev puas tsuaj uas yuav tsum tau sau rau ntawm daim ntawv lo
ethyl acetate hmoov
Hazard nqe lus:
H225 Cov kua ua kua thiab vau heev.
H336 Tej zaum yuav ua rau qaug zog lossis kiv taub hau.
Cov lus ceeb toom:
P210 Khaws kom deb ntawm tshav kub / taws / qhib nplaim taws / kub qhov chaw. - Tsis haus luam yeeb.
P233 Khaws lub thawv kaw kom nruj.
P240 Hauv av / daim ntawv cog lus thawv thiab cov khoom txais.
P243 Coj kev ceev faj tiv thaiv tawm tsam zoo li qub.
P280 Hnav cov hnab looj tes tiv thaiv / tiv thaiv khaub ncaws / tiv thaiv qhov muag / tiv thaiv ntsej muag.
P303 + P361 + P353 YOG NTAWM SKIN (los yog plaub hau): Tshem tawm / Tshem tawm tag nrho cov khaub ncaws tsis huv. Yaug daim tawv nqaij nrog dej / da dej.
Ntxiv cov yam ntxwv txaus ntshai thiab cov cim npe:
EUH066 Rov ua dua tuaj yeem ua rau tawv nqaij qhuav lossis tawg. EUH204 muaj isocyanates. Tsib
tsim kev tsis haum tshuaj.
Post lub sij hawm: Aug-04-2021