Isikhumba sokwenziwa kwePolyurethane sisixhobo esitsha esineenjongo ezininzi esiphuhliswe ngokukhawuleza kule minyaka yakutshanje.Yenziwe ngesiseko sokugquma i-polyurethane slurry kunye nesakhiwo seseli evulekileyo kwisiseko esisezantsi seempahla ezilukiweyo kunye nezingalukwanga.Nangona kunjalo, uninzi lwee-polyurethanes ezisetyenzisiweyo zisekwe kwi-solvent, kunye nokulimala kokusingqongileyo kunye nomzimba womntu obangelwa yintsalela ye-DMF kunye ne-VOC volatilization kwinkqubo yokuvelisa ibe yibhotile yobugcisa ethintela uphuhliso lweshishini.Okwangoku, i-polyurethane esekwe emanzini yeyona ndawo ifanelekileyo yokuthatha indawo ye-solvent esekwe kwi-polyurethane, kodwa iziphene zayo ziphantsi komxholo oqinileyo, iipropathi ezibuthathaka zomzimba, ukunamathela ngokulula kumphezulu wokugquma, ukunganyangeki kwe-hydrolysis, ukuguquguquka kancinci kwinkqubo yokuvelisa, kunye nemveliso ephantsi. ukusebenza kakuhle.
Ngokusekelwe kwingqikelelo "yokukhuselwa kohlaza kunye nokusingqongileyo" kunye nokuphucula ixabiso elongezelelweyo leemveliso, iprojekthi iye yaphuhlisa isethi yenkqubo entsha yeteknoloji yokuvelisa i-polyurethane ephezulu eqinileyo kunye ne-aqueous polyurethane kunye ne-ecological synthetic yesikhumba esinokuthatha indawo ye-solvent polyurethane.Umxholo ophezulu oqinileyo owenziwe ngamanzi we-polyurethane owenziwe kwaye waphuhliswa unokunciphisa i-DMF intsalela kunye ne-VOC volatilization ukusuka kumthombo wophuhliso ngelixa uphucula ukusebenza kwengubo.Ngelo xesha, ngenxa yokuba ifilimu iqulethe inani elikhulu lamaqela e-hydrophilic kunye nezakhiwo ze-microporous, i-coating inomoya omhle kunye nomswakama wokungena kwamanzi, kwaye iyimveliso yangempela yokuvelisa.Ukongeza, i-polyurethane iguqulwa kunye nezixhobo ze-nano ukuphuhlisa ukusebenza okuphezulu kunye nemveliso yesikhumba eyenziwe nge-polyurethane enemisebenzi emininzi efanelekileyo kwimfuno yemarike, ukwenzela ukuba kuphuculwe ixabiso elongezelelweyo leemveliso kunye nokomeleza ukukhuphisana kwemarike.
Imixholo yophando ephambili:
(1) Ukulungiselela itekhnoloji yomxholo ophezulu oqinileyo wepolyurethane wamanzi.Ngokwemodeli yezibalo yoxinaniso lwesambuku sezinto ezingqukuva, umxholo ophezulu oqinileyo wepolyurethane enamanzi kunye nokuhanjiswa kobungakanani bamasuntswana amaninzi.Ukusabalalisa ubungakanani be-particle multi-dimensional kunokuphucula umxholo oqinileyo we-lotion ngaphandle kokunyusa i-viscosity ephezulu kakhulu.Ingxaki ye-viscosity ephezulu kunye nokuqina okuphantsi kwimveliso yomxholo ophezulu we-polyurethane yamanzi ixazululwe.Umxholo oqinileyo ngu> 50%, i-angle yoqhagamshelwano yefilimu yi-101.1 °, kwaye ukuchasana kwamanzi kunye nokuxhatshazwa kwe-hydrolysis kuphuculwe.
(2) Itekhnoloji yokuvelisa i-polyurethane ene-foamed bass yamanzi.Ngokusekwe kumxholo oqinileyo ophakamileyo we-polyurethane enamanzi, indibaniselwano yeendlela zokwenyama kunye neekhemikhali zogwebu zikhethwa ukwenza i-polyurethane bass esekwe emanzini eneseli ehlengahlengiswayo.Imveliso ityebileyo, ityebile kwaye ithambile, kunye nokufunxa okulungileyo kokufuma kunye nokungena, ukuphumeza ukukhutshwa kwe-VOC kunye ne-DMF ye-zero kwinkqubo yokuvelisa, ukunciphisa ubunzima bokuphela konyango kunye nokugcina iindleko zokubuyiswa kwe-solvent kunye nonyango kwixesha elizayo.
(3) Ukulungiselela iteknoloji ye-polyurethane esebenzayo yamanzi.I-polyurethane yamanzi e-multifunctional waterborne ene-super hydrophobicity, ukuxhathisa ukunxiba kunye neempawu ezichasene ne-static zilungiswe ngokusebenzisa indlela yokuphendula ngokucofa "mercapto monoene", i-nanotechnology kunye neteknoloji yokuphilisa ukukhanya.Ingasetyenziswa ngesikhumba sokwenziwa, isambatho esilukiweyo, ukwahlula amanzi oyile, ukukhuselwa kombane kunye nezinye iindawo.
Ixesha lokuposa: Sep-13-2022