Ibigize imiti yibintu bibiri - ibikoresho bifuro ifuro mubisanzwe bigizwe nibice A (ibice bya isocyanate) nibice B (ibice bya polyol). Nyuma yo kuvanga, ibice bibiri byabyara kubyara ifuro. Ibikurikira nisesengura ryihariye:
1.Igice A (igice cya isocyanate)
• Ibice byingenzi: polyisocyanates, ibisanzwe ni toluene diisocyanate (TDI) na diphenylmethane diisocyanate (MDI), hiyongereyeho MDI ya polymeric (PAPI).
• Imikorere: Nka "agent ihuza" reaction, ikora hamwe nitsinda rya hydrogène ikora mubice B kandi nigikoresho cyibanze cyo gushiraho ifuro.
2.Ibigize B (ibice bya polyol)
Harimo ibice bitandukanye bigira uruhare mubitekerezo no kugenzura imiterere ya furo:
• Polyol: nka polyether polyol na polyester polyol, itanga hydroxyl (- OH) kandi ikitwara hamwe na - NCO itsinda rya isocyanate, bigize ishingiro rya skeleton ya kopi.
• Umukozi wo kubira ifuro: atanga gaze yo kwagura imvange no gukora ibibyimba. Ibisanzwe ni ibintu bifata ifuro (urugero, insimburangingo ya Freon, cyclopentane) hamwe nudukoko twa furo (urugero, amazi, akora na isocyanate kugirango atange karuboni).
• Catalizator: Yihutisha reaction, nka catalizike ya amine (itera reaction ifuro) hamwe na catalizike ya organotine (iteza gel reaction).
• Surfactants: ituze imiterere ya furo kandi irinde ifuro guturika. Mubisanzwe ni siloxane.
• Ibindi byongeweho: nka retardants ya flame, yuzuza, amabara, nibindi, byongeweho ukurikije ibisabwa kugirango ubashe kuzamura flame, imbaraga nibindi bintu bya furo.
3.Ihame ry'imyitwarire
Iyo ibice A na B bivanze, - NCO amatsinda ya isocyanate yitwara hamwe na - OH amatsinda ya polyole namazi, bakarekura gaze (ifuro) kugirango bakore ibintu byinshi. Ikigereranyo cyihariye nubwoko bwibigize bigena ubwinshi bwifuro, ubukana, imiterere yumuriro, nibindi biranga. Ibi bikoresho bitandukanye bisanga porogaramu nyinshi muri sisitemu yo gukumira, ibisubizo bipakira, gukora ibikoresho byo mu nzu, n'inganda zijyanye nabyo.