Indlela yokulungiselela i-polyvinyl butyral

I-resin enemisebenzi eminingi eyenziwe ngokuhlangana kwamakhemikhali kwe-polyvinyl butyral, futhi emelana nemisebe ye-ultraviolet, amanzi, uwoyela nokuguga.

Iyancibilika kumethanoli, i-ethanol, amaketoni, ama-alkanes a-halogenated, amakhemikhali anephunga elimnandi .. Inokuhambisana okuhle nama-phthalates, i-benzene sebacate plasticizers, i-nitrocellulose, i-phenolic resins, i-epoxy resins, njll. .. Ukunamathela okuhle kuzinsimbi, ingilazi, ukhuni, izinto zobumba, imikhiqizo ye-fiber, njll.

I-Polyvinyl alcohol iyancibilika emanzini, futhi i-butyraldehyde ne-catalyst efana ne-hydrochloric acid noma i-sulfuric acid iyengezwa ngaphansi kokunyakazisa, futhi ukusabela kwe-acetal kwenziwa ngo-15-50 ° C. Ikakhulu esetshenziswa ekwenziweni ingilazi laminated, upende kanye anamathelayo. Izinhlobo eziningi zezinto zokwakha, njenge: ingilazi, insimbi, ipulasitiki, ukhuni, isikhumba nezinye izinto zinokubambelela okuqinile. I-PVB enokubonakala okuphezulu. Ubulukhuni obuhle kakhulu. ukuvumelana nezimo. Ukushisa okuphansi ukusebenza. Inamanani amahle okusabalalisa nokuhambisana, ivala izakhiwo zezingulube.

I-Polyvinyl butyral, i-condensate ye-polyvinyl alcohol (PVA) ne-butyraldehyde, iyimpuphu emhlophe enamathela kahle ensimbi, ingilazi, ukhuni, izinto zobumba nemikhiqizo ye-fiber. Ezingutsheni, ama-interlayers engilazi yezokuphepha nezinto zokuvikela futhi zinokusetshenziswa okuhlukahlukene, okuvame kakhulu ukuba ingilazi yokuphepha.

Enqubeni yokunciphisa ye-polyvinyl acetal, izindlela ezahlukahlukene zingasetshenziswa. "Indlela yesinyathelo esisodwa" ukufaka onke ama-aldehydes ku-reactor bese nayo yonke i-hydrochloric acid; “indlela enezinyathelo ezimbili” ukufaka inani elincane le-aldehydes bese ufaka yonke i-hydrochloric acid, bese ekugcineni ufaka ama-aldehydes asele; "indlela yokuvumelanisa" ukufaka onke ama-aldehydes ne-hydrochloric acid ku-reactor ngasikhathi sinye.


Isikhathi Iposi: Oct-13-2020