Isiponji luhlobo lwe-polyurethane foam, kwaye luhlobo lwe-polyurethane foam ethambileyo.
Ngenxa yesakhiwo sayo se-honeycomb, isiponji sineempawu ezintle zokuthamba, ukufunxa amanzi, ukuqina kunye nokumelana namanzi, okwenza ukuba isetyenziswe ngokubanzi kwi-sofa, impahla, i-mattress, ukupakishwa okuguquguqukayo kunye namanye amashishini.
Izinto eziphambili zesponji:
1. I-Organic isocyanate: i-isocyanate esetyenziswa ngokuqhelekileyo yi-methylene diisocyanate, okanye i-TDI emfutshane. Kukho ii-isomers ezimbini, ezizezi 4murTDIJI 6murTDI.
Kwimveliso yeeponji, i-4-TDI ithatha i-80% yetotali.
2. I-polyether polyol: isiponji sisebenzisa i-polyether propylene glycol kunye ne-polyether glycerol, enomsebenzi omncinci (2-3), ixabiso eliphantsi le-hydroxyl kunye nobunzima obuphezulu be-molecular.
I-molecular formula yi-CH3-CHO (C3H6O) m (C2H4O) nH CH2O (C3H6O) m (C2H4O) nH.
3. I-Catalyst: ii-catalysts ezinokukhuthaza ukusabela kwe-polyether polyol kunye ne-isocyanate ukwenza ukukhula kwekhonkco yi-stannous octanoate kunye ne-dibutyltin.
I-catalysts ekhuthaza ukuphendulwa kwe-crosslinking kunye ne-CO2 yegesi ekhutshwe kwi-reaction phakathi kwe-isocyanate kunye namanzi i-triethanolamine, i-triethylenediamine, i-triethylamine kunye nokunye.
I-4, i-foam stabilizer (i-foam stabilizer): i-foam stabilizer esetyenziswa ngokuqhelekileyo, ngokukodwa isebenzisa i-silicon-carbon bond Si-C copolymer, i-dosage imalunga ne-0.5% 5%.
5. Ii-agent ezinegwebu zokusetyenziswa kwangaphandle: i-fluorocarbons enendawo yokubilisa ephantsi isetyenziswa ngokuqhelekileyo, njenge-fluorotrichloromethane (Fmur11).
Ngenxa yokuba ingekho indalo, i-cyclopentane isetyenziswa ngokubanzi endaweni ye-Fmur11, okanye i-dichloromethane, kwaye umphumo ulungile.
6. Amanzi: kwimveliso yesiponji, amanzi ayimfuneko. Amanzi asabela nge-TDI ukukhulula igesi ye-CO2, edlala indima ekukhuleni kwekhonkco.
