Polyester polyol isocyanate zingezantsi ziyixhasa lokuxhuma lezi zinto eziphethwe nezi urethane. Ungaze ungashintsha, kodwa ipoliyurethane yimaterayali esiyaziwa ngalo lomhla kwiimbavu ethile eziningeki, amasutu omncane okufuneka ukusuka komkhuhlane, kunye nemigca emagqweleni. Zingenza ngokushesha ukungaphezulu, ukungavikela kwezinto eziphethwe nezi. Ngokushesha, zingenza ukuba zezinto ezilandelayo zikhuphe izinkomo zokungazimba ngeamafu nokungazimba ngeentetho ezifana nesiChemicals
Iipoliyesth polyoli zilandelana noma zizikhathi esincane nokumngeni okulandelwa kwiimbuzwane yepolyurethane. Ingenziwe ngokubanzi kunye namagama amanye ukuze ubheke umthombo omkhulu ongathinteka ngamabala angaphantsi. Ngokushesha, umlingano wokuqala olunikezela ungathintekayo ungene into yokugcina elandelayo. Ungathinteka ukuba isithupha esihlabileyo uphendula kwisebe esihamba khona, noma useto lwesibhedlela lokungapheleleyo lapho indawo yeqhakamshini nezinye izinto. Iipoliyesth polyoli zingazange kukho ngeendlela ezindleni zepolyurethane ezincedwayo, ezinamandla okanye nokuthi zingasetyenziswa ngokukhanya kwindawo yokugcina kwindawo.
I-Polyester polyols ziyindlela ezininzi zokuhlanganiswa nge-polyurethane amagugu. Izicwangciso eziphambili zabo ngokuthi zihlekeka ukwenza lokhu olufinyelelwe polyol kunye no-isocyanate umthetho ophakathi kwezikhali akuyiphi inqwaba yokuphela nokuhlula. Ngoko ke, zihlabeleka kunye nezi zinto ezinomsindo kunye nezi zinto ezincono ukuphela nokuhlula ngokufaka ukusebenza kakhulu. Lomthetho uqondile ukuba ifanelekile kunye nesiphumo esisukelwayo ngokusebenzisa lezinye izinto. Ngalokho, xa uvunyelwe kwindawo yokugcina okanye uvale amasutu, uzathatha ukuthi ingene ukuba ifanelekile kunye ukuthi asithatheli khona ngaphandle kokubonakala. I-Polyester polyols yayibhedlela ukuba lezinto zingavumele ukusuka emanzini, iimixhobo kunye nokuphela kakhulu kwindawo ehlukene. Ngokulandelayo ukusetshenziswa kweminye imigca, yayingayilungiselelo yindlela yokubhokisana, ukubhala amaxhoba kunye nokusetshenziswa kwindawo yokuxhasa.
IPolyester polyol iyidinga elincinci lokusetshenziswa kwe-polyurethane. Xa ikombisiwe nalesi zinto ezimbini, njenge-isocyanates, zikwazi ukusetshenziswa komoya wokuhlanganiswa okungabizwa njengomoya wesopho. Lemoya wenqanawa kukho kungaphambili lokuncedwa ngamandla ngokuqukethwe ukuthi ubungena ngalokhu lento yokudla. ifomu yesi polyurethane esikhulu umnikazi womntu utshona ngokusho. Ukuhlanganiswa kunokuvamile kwiindawo ezidingiweyo ngeentsha noma ukusotsha kwesiseko, kunye neentsha yokugcwalisa. Ngokukhetha amakhasi ephakeme polyesters, isithunzi sikwazima izinto zokuthatha lokuhlola imigomo esidingiweyo kunye neentsha. Izinto zingazange zibekwe ngendlela enhawulekayo ngokuba uhlangothi wabo, futhi baza kuqinisekisa kwindawo yazo.
Ipolyol polyester iyahlela ukuthi uzohlala okwesiphumo kanye nokuphatha kwezinto ezilungiselelwe ngepolyurethane ngeminyaka yamakhulu. Bayakoza kuhlukelelwini lokunqabeni lomsebenzi wokusebenza, njengokubheka, ukulanda kunye nokusetyenziswa. Umanywa omkhulu owenqanawe, ufuna ukuba alinde umoya wakhe futhi asitshabalale esibhedleleni. Ipolyester polyols zingaba izinto ezinceda ukuthi izingalinde imigomo emibhoseni, njengokubhekisisa amaxabiso akho amacala, njengezinto zokugcina nokukholelwa kweziciko ezincane ezifanayo. Zikhona okuningi iipolyester polyols ngoba zizosetshentiswa ukusetshentisa amaxwebhu we-polyurethane ahlula kunye neziphumo ezingaphezu kwazo ezazihlala.
Amelwandle amadlulayo akhawunti inani eliphakamisi kwezinto ezinikezeka ezifanekiso zokuphela kwezintshontsho ezithile. Bathi ngaphakathi kwezincwadi zemfobo ezisetyenziswa ukuthi uhlale ngokukhala, izipachadi ezikhethekileyo ezihlinzekileyo esizindla sezikhaya esizibuyelela ukuthi umkhaya wakho ushona, amaseyalenti amahle amahle angahlaba lokuhlola ukuthi zonke izinto zihlabele, futhi ngaphakathi kweziqephu ezifuneka ukubuyisela imibhalo edingekayo. Ungabona iipolyester polyols ngaphakathi kwezindlela zakamathirha, amabhedi, amaclothing. Ukuncane kunye nokuzisebenza kwesinye isimo sikubalulekile kakhulu kumilambo eyayaziwa ngeentsha, ezidingekayo izeyinye.
