Kulezi zinsuku, i-TDI noma i-MDI ikhethwe njengezinto eziphambili ezivuthiwe zemikhiqizo eminingi ye-PU, noma ngabe uphulukisayo, i-foled and haming, ukuqina okunzima, ukunwebeka, i-pu lesikhumba noma i-PU Pear. HOleyo,kungabaI-TDIorMDI, yayoIndandatho ye-benzeneku-TDI ne-MDIngqo Xhumasukwehlukaisocyanesteramaqembu, futhi i-PI Bond ithola ukuhlangana ne-NCO eseduze. Ngaphansi kwethonya le-lIGH, ukushisa, umoya-mpilo, ikakhulukazi imisebe ye-ultraviolet, itkungadala ukubola kwe-ammonia esterna-khiqiza amine amnandi, laphoI-Benzene Nucleusuhlele kabusha ngemuvaoxidation. Lokhu kuzothuthukisa amaqembu we-chromophori abangela ukuphuzi emikhiqizweni ye-PU yokugcina.Iso lomuntu lizwela kakhulu ngombala, imvamisa i-ppm embalwa yokungcola okunemibala izoholela ekubukekeni kwemikhiqizo ephuzi.
Ukuxazulula inkinga ephuzi, indlela ebaluleke kunazo zonke ukusebenzisa i-HDI noma i-IPDI esikhundleni se-TDI ne-MDL njengezinto ezingavuthiwe ngaphandle kokuxhumana okuqondile phakathi kwe-benzene ring kanye ne-NCO. Kepha intengo yalezi zinto ezingavuthiwe inamaphutha anjalo: Intengo iyabiza kakhulu, ukumelana kwamakhemikhali ampofu, ukuqina akwanele .... Lokhu kuvimbela kakhulu ukukhushulwa kwe-HDI ku-PU.
Elinye ikhambi ukugcwalisa igesi ye -nert in inqubo yokukhiqiza nokugcina ukuhlukanisa ukuxhumana no-oxygen ngangokunokwenzeka. Indlela ephumelela kakhudlwana ukufaka i-antioxidant futhiUV absorber, okungavimba ngempumelelo futhi kubambezele ukwenzeka kwe-PU Yellowling.
I-YANI HN130 i-Arine Anti-Yephuzi ephuzi. Yona'esetshenzisiweNjengomsebenzi wegesi kwinqubo yokukhiqiza, unokukhetha okuhle kwe-nitric oxide (cha)na-I-nitrogen dioxide (no2),na-vimbela ngempumelelokuphuzi okubangelwa yiigesi ilangazelela.
I-YANI HN130 isetshenziswa kabanzi ku-puIzinto zokubumba, izinto zezinyawo zezinyawo, amapulasitiki, ama-polyurethane fibers nama-polyurethane amboni, ukunweba kakhulu impilo yenkonzo yomkhiqizos.
Uhlala wamukelekile ukuxhumana nathi ngemibuzo!
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Isikhathi sePosi: Nov-22-2021