POLYOLS MA POLYOLS FA'aoga

Polyether Polyols e faia e ala i le taliina o le oxide ma le glycol.

Ole oxide ole fa'aoga autu ole Ethylene Oxide, Propylene Oxide, Butylene Oxide, Epichlorohydrin.

Glycols autu fa'aaogaina o le Ethylene Glycol, Propylene Glycol, Suavai, Glycerine, Sorbitol, Sucrose, THME.

Polyols o lo'o i ai vaega fa'afofoga hydroxyl (OH) e tali atu i vaega ole isocyanate (NCO) i luga ole isocyanates e fai ai polyurethanes.

E tele ituaiga polyether polyols mo polyurethane.O mea PU ma faʻatinoga eseese e mafai ona maua i le tali atu i le va o le amataina ma le olefin polymerization.

E ala i le faʻaleleia o mea faʻapitoa a le PU poʻo le suia o le catalyst, e mafai ona faʻaleleia le faʻatinoga o le polyether.O nei faʻavae e aofia ai le 'ava malosi, 'ava malosi, tetrahydrofuran, ma polyether polyols aromatic, ma isi.

FA'aoga

O le faʻaaogaina o polyether faʻaaogaina i le PU e sili atu i le 80%.Polyether polyurethane e mafai ona fa'avasegaina

Polyether Polyol (PPG),

Polymeric Polyol (POP),

Polytetramethylene ether glycol (PTMEG, e taʻua foi polytetrahydrofuran polyol) e tusa ai ma le amataga.

Polyether polyols e masani ona faʻaaogaina i le PU faʻamaʻa faʻamaʻa, faʻafefe vaivai, ma faʻafefeteina oloa.

Ta'utinoga: O nisi o anotusi/ata i lenei tusiga e mai le Initaneti, ma ua fa'amauina le puna.E na'o le fa'aaogaina e fa'amatala ai mea moni po'o manatu o lo'o ta'ua i lenei tusiga.E na'o le feso'ota'iga ma le a'oa'oina, ma e le'o mo isi fa'atauga fa'apisinisi.Afai e i ai so'o se soliga, fa'amolemole fa'afeso'ota'i mai e tape loa.


Taimi meli: Tes-07-2022