Txoj moo

1,5-Naphthalene Diisocyanate (NDI) yog ib qho zoo tshaj plaws aromatic diisocyanate dav siv los ua ke siab -kev ua tau zoo cam khwb cia polyurethan...

Lub Caij Nplooj Ntoos Hlav, tseem hu ua Suav Xyoo Tshiab, yog qhov tseem ceeb tshaj plaws thiab nthuav dav kev ua koob tsheej nyob hauv Suav teb. N...

Xyoo Tshiab Eve, lossis hmo kawg ntawm lub xyoo hauv Suav lunarcalendar, hu ua Chuxi. Xyoo Tshiab Eve, nyob rau hauv lub ntsiab lus nyob rau hauv S...

Rau siab -kawg polyurethane daim ntawv thov qhov kev ua tau zoo tsis yog- sib tham tau, PPDI-raws li qis- dawb prepolymer (CPU) sawv tawm raws li k...

Raws li ib puag ncig thiab kev nyab xeeb cov qauv txuas ntxiv nce ntxiv, MDI-raws li qis-dawb prepolymer (CPU) tau dhau los ua nrov hauv kev tsim k...

Rau cov ntawv thov uas yuav tsum tau muaj zog dua txhua yam thiab hnav tsis kam, TDI-raws li polyester qis-dawb prepolymer (CPU) muaj qhov zoo tsha...

Ntawm ntau lub tshuab polyurethane, TDI-raws li polyether qis-dawb prepolymer (CPU) tseem yog cov tshuaj siv dav rau cov tuam txhab nrhiav kev sib ...

Hauv kev sib tw polyurethane ua lag luam niaj hnub no, cov tuam txhab tsim khoom tau raug kev nyuaj siab los txhim kho cov khoom zoo thaum tswj cov...

Hauv kev thov kev lag luam, cov khoom siv thiab kev ntseeg tau ntawm cov txheej txheem yog qhov tseem ceeb sib npaug. Tsawg-dawb prepolymer (CPU) t...

Raws li cov tuam txhab lag luam polyurethane thoob ntiaj teb tau nthuav dav ntxiv rau kev nyab xeeb, kev ua raws li ib puag ncig, thiab cov txheej ...

40.Yuav ua li cas cov qauv ntawm isocyanate cuam tshuam cov reactivity ntawm NCO pawg? Electronegativeness ntawm pawg R: Yog tias pawg R yog ib qho...

16.Milky lub sij hawm Thaum kawg ntawm cheeb tsam kuv, cov mis dawb tshwm nyob rau hauv cov kua ammonia sib tov.Lub sij hawm no hu ua lub sij hawm ...