Polyurethane hluavtaws tawv yog cov khoom siv sib xyaw ua ke tshiab uas tau tsim sai heev hauv xyoo tas los no.Nws yog tsim los ntawm txheej txheej polyurethane slurry nrog qhib cell qauv ntawm lub hauv paus qis ntawm textile thiab non-woven fabrics.Txawm li cas los xij, feem ntau ntawm cov polyurethanes siv yog hnyav raws, thiab kev puas tsuaj rau ib puag ncig thiab tib neeg lub cev tshwm sim los ntawm DMF residue thiab VOC volatilization nyob rau hauv cov txheej txheem ntau lawm tau dhau los ua ib qho kev txwv tsis pub tsim kev lag luam.Tam sim no, dej-raws li polyurethane yog ib qho zoo tagnrho hloov rau cov kuab tshuaj raws li polyurethane, tab sis nws cov tsis xws luag yog cov khoom uas tsis muaj cov ntsiab lus, lub cev tsis zoo, yooj yim adhesion ntawm txheej txheej, tsis zoo hydrolysis tsis kam, qeeb volatilization nyob rau hauv cov txheej txheem ntau lawm, thiab tsawg ntau lawm. efficiency.
Raws li lub tswv yim ntawm "ntsuab ntsuab thiab kev tiv thaiv ib puag ncig" thiab kev txhim kho tus nqi ntxiv ntawm cov khoom, qhov project tau tsim cov txheej txheem tshiab thev naus laus zis rau kev tsim cov khoom siab thiab aqueous polyurethane thiab ecological hluavtaws tawv uas tuaj yeem hloov cov kuab tshuaj polyurethane.Cov ntsiab lus siab dej polyurethane tsim thiab tsim tuaj yeem txo DMF residue thiab VOC volatilization los ntawm kev txhim kho qhov chaw thaum txhim kho cov txheej txheem.Nyob rau tib lub sijhawm, vim tias zaj duab xis muaj ntau pawg hydrophilic thiab microporous qauv, txheej txheej muaj huab cua zoo thiab noo noo permeability, thiab yog cov khoom tsim tawm tiag tiag.Tsis tas li ntawd, polyurethane tau hloov kho nrog cov ntaub ntawv nano los tsim cov kev ua haujlwm siab thiab ntau lub luag haujlwm polyurethane hluavtaws tawv cov khoom tsim nyog rau kev lag luam xav tau, txhawm rau txhim kho tus nqi ntxiv ntawm cov khoom thiab ntxiv dag zog rau kev lag luam kev sib tw.
Cov ntsiab lus tseem ceeb ntawm kev tshawb fawb:
(1) Kev npaj thev naus laus zis ntawm cov khoom siv dej siab polyurethane.Raws li tus qauv lej ntawm qhov ntom ntom ntawm cov khoom kheej kheej, cov ntsiab lus siab aqueous polyurethane nrog ntau qhov sib txawv particle loj yog npaj.Kev faib tawm ntau qhov me me tuaj yeem txhim kho cov ntsiab lus ntawm cov tshuaj pleev ib ce yam tsis muaj qhov viscosity ntau dhau.Qhov teeb meem ntawm siab viscosity thiab tsis tshua muaj solidity nyob rau hauv zus tau tej cov cov ntsiab lus siab waterborne polyurethane yog daws.Cov ntsiab lus ntawm cov khoom yog> 50%, lub kaum sab xis ntawm zaj duab xis yog 101.1 °, thiab cov dej tsis kam thiab hydrolysis kuj tau txhim kho.
(2) Kev tsim khoom siv thev naus laus zis ntawm dej los ntawm polyurethane foamed ntses bass thaj tsam.Raws li cov ntsiab lus siab aqueous polyurethane, kev sib xyaw ua ke ntawm lub cev thiab tshuaj foaming txoj kev raug xaiv los tsim cov dej-raws li polyurethane ntses bass thaj tsam nrog adjustable cell.Cov khoom yog plump, tuab thiab mos, nrog zoo noo noo nqus thiab permeability, ua tiav xoom VOC thiab DMF emissions nyob rau hauv cov txheej txheem ntau lawm, txo qhov nyuaj ntawm kev kho mob kawg thiab txuag tus nqi ntawm cov kuab tshuaj rov qab thiab kev kho mob nyob rau theem tom ntej.
(3) Kev npaj thev naus laus zis ntawm kev ua haujlwm dej ua haujlwm polyurethane.Multifunctional waterborne polyurethane nrog super hydrophobicity, hnav tsis kam thiab anti-static zog tau npaj los ntawm kev siv cov tshuaj tiv thaiv nyem ntawm "mercapto monoene", nanotechnology thiab lub teeb kho tshuab.Nws tuaj yeem siv rau hauv cov tawv hluavtaws, textile txheej, roj-dej sib cais, electromagnetic shielding thiab lwm yam.
Post lub sij hawm: Sep-13-2022