Kopo:

Li-diisocyanate tsa toluene li sebelisoa haholo-holo ho etsa foam ea polyurethane e bonolo bakeng sa ho sebelisoa ka thepa ea ka tlung, libetheng le litulong tsa likoloi le tsa lifofane. Tse ling, litšebeliso tse nyane ke tsa li-polyurethane elastomers (bakeng sa likoahelo tsa likoloi tsa likoloi, lirolara tsa indasteri, sole ea lipapali le libutsi, le thepa ea mochini) le liphahlo (bakeng sa ho hloekisoa ha likoloi, ho qeta lehong, le liphahlo tse thibelang kutu) (ICIS 2009). Toluene diisocyanate-based rigid polyurethane foam e sebelisoa ka lihatsetsing tsa malapa le bakeng sa ho roala matlo a bolulo kapa marulelo a khoebo ka boto kapa ka mokhoa oa laminate (IARC 1986). Foam e thata e bitsoang "Pour-inplace" kapa "spray-in" e sebelisoa e le tšireletso bakeng sa litereilara tsa literaka, likoloi tsa literene tse tsamaisang thepa, le lijana tsa thepa. Li-alkyd tse fetotsoeng ka polyurethane li na le hoo e ka bang 6% ho isa ho 7% ea isocyanate, haholo-holo toluene diisocyanate, 'me e sebelisoa e le lisebelisoa tsa ho roala, joalo ka lithapo tsa fatše, lithapo tsa lehong le lipente. Liaparo tsa ho folisa mongobo li sebelisoa e le li-sealants tsa lehong le tsa konkreite le ho qeta fatše. Liaparo tsa lifofane, teraka le likoloi tsa baeti hangata li entsoe ka toluene diisocyanate prepolymer system. Li-elastomer tsa urethane li sebelisoa lits'ebetsong tse hlokang matla, ho tenyetseha, le ho monya ho ts'oenyeha, 'me li hanana le oli, solvents, le mahlaseli a ultraviolet. Li sebelisoa ka lik'hemik'hale tsa sekhomaretsi le sealant le likarolong tsa koloi, lieta tsa lieta, mabili a rollerskate, li-liner le mekotla ea mali. Li boetse li sebelisoa masimo a inoil le merafo. Lihlahisoa tse ling tsa elastomer li hlahisoa ho tsoa ho isomer e hloekileng ea 2,4 ho fapana le motsoako oa 80:20.

Lihlopha tse sebetsang ho TDI li sebetsana le lihlopha tsa hydroxyl ho theha likhokahano tsa urethane, tse sebelisoang ho etsa mapolanka a bonolo a polyurethane bakeng sa ho sebelisoa thepa ea ka tlung, libethe, le litulo tsa likoloi le tsa khoebo. Litšebeliso tse ling li kenyelletsa li-elastomer tsa polyurethane tse sebelisoang likoahelong tsa likoloi tsa koloi, lirolara tsa indasteri, lieta tsa lipapali, hammoho le thepa ea mochini le liphahlo (tšepe, lehong le li-anticorrosion tse sebetsang hantle haholo). TDI-based rigid polyurethane foam e sebelisoa ka lihatsetsing tsa malapa le bakeng sa kaho ea bolulo joalo ka ho roala le ho rulela ka khoebo. Foam e thata ea TDI e sebelisoa e le sehatsetsi bakeng sa litereilara tsa literaka, likoloi tse tsamaisang thepa, le lijana tsa thepa tsa mose ho maoatle. Liaparo tsa TDI tse folisang mongobo li sebelisoa e le litiiso tsa lehong le konkreite le ho qeta fatše.