Zeziphi izinyibilikisi ze-ethyl cellulose?

Izinyibilikisi zidlala indima ebalulekileyo ekwenziweni nasekusetyenzweni kweepholima ezifana ne-ethyl cellulose (EC). I-Ethyl cellulose yipolymer eguquguqukayo evela kwi-cellulose, i-polymer yendalo efumaneka kwiindonga zeeseli zezityalo. Isetyenziswa ngokuqhelekileyo kumashishini ahlukeneyo afana namayeza, iingubo, izinto zokuncamathelisa, kunye nokutya.

Xa ukhetha izinyibilikisi ze-ethyl cellulose, izinto ezininzi kufuneka ziqwalaselwe, kubandakanywa ukunyibilika, i-viscosity, i-volatility, i-toxicity, kunye nefuthe lokusingqongileyo. Ukukhethwa kwe-solvent kunokuchaphazela kakhulu iipropati zemveliso yokugqibela.

I-Ethanol: I-Ethanol yenye yezona zinto ziqhelekileyo zisetyenziselwa ukunyibilikisa i-ethyl cellulose. Ifumaneka ngokulula, ayibizi kakhulu, kwaye ibonisa ukunyibilika okulungileyo kwi-ethyl cellulose. I-Ethanol isetyenziswa kakhulu kwizicelo zamayeza ukulungiselela i-coatings, iifilimu, kunye ne-matrices.

I-Isopropanol (IPA): Isopropanol yenye i-solvent ethandwayo ye-ethyl cellulose. Inika iingenelo ezifanayo kwi-ethanol kodwa inokubonelela ngeempawu ezingcono zokwenza ifilim kunye nokuguquguquka okuphezulu, iyenze ilungele izicelo ezifuna amaxesha omiswe ngokukhawuleza.

I-Methanol: I-Methanol sisinyibiliki se-polar esinokuyinyibilikisa i-ethyl cellulose ngokufanelekileyo. Nangona kunjalo, ayisetyenziswanga ngokuqhelekileyo ngenxa yetyhefu ephezulu xa kuthelekiswa ne-ethanol kunye ne-isopropanol. I-Methanol isetyenziswa ikakhulu kwizicelo ezikhethekileyo apho iipropati zayo ezithile zifunwa.

I-acetone: I-acetone sisinyibilikisi esiguqukayo esinokunyibilika okulungileyo kwi-ethyl cellulose. Isetyenziswa ngokuqhelekileyo kwizicelo zemizi-mveliso yokwenziwa kweengubo zokugquma, i-adhesives, kunye nee-inki. Nangona kunjalo, i-acetone inokutsha kakhulu kwaye inokubangela iingozi zokhuseleko ukuba ayiphathwa kakuhle.

I-Toluene: I-toluene sisinyibilikisi esingekho kwi-polar esibonisa ukunyibilika okugqwesileyo kwe-ethyl cellulose. Isetyenziswa ngokuqhelekileyo kwishishini lokugquma kunye ne-adhesives ngokukwazi ukunyibilikisa uluhlu olubanzi lweepolymers, kubandakanya i-ethyl cellulose. Nangona kunjalo, i-toluene inenkxalabo yezempilo kunye nokusingqongileyo ehambelana nokusetyenziswa kwayo, kubandakanywa ubutyhefu kunye nokuguquguquka.

I-Xylene: I-Xylene sesinye isinyibilikisi esingeyo-polar esinokunyibilikisa i-ethyl cellulose ngokufanelekileyo. Ihlala isetyenziselwa ukudibanisa nezinye izinyibilikisi ukulungelelanisa ukunyibilika kunye ne-viscosity yesisombululo. Njenge-toluene, i-xylene ibeka impilo kunye nemingcipheko yokusingqongileyo kwaye idinga ukuphathwa ngokucophelela.

Izinyibilikisi zeChlorinated (umz., iChloroform, iDichloromethane): Izinyibilikisi ezifakwe kwiklorini njengechloroform kunye nedichloromethane zisebenza kakhulu ekunyibilikiseni i-ethyl cellulose. Nangona kunjalo, zinxulunyaniswa neengozi ezibalulekileyo zempilo kunye nokusingqongileyo, kubandakanya ubuthi kunye nokuzingisa kokusingqongileyo. Ngenxa yezi nkxalabo, ukusetyenziswa kwazo kwehlile ngenxa yeendlela ezizezinye ezikhuselekileyo.

I-Ethyl Acetate: I-acetate ye-Ethyl yi-solvent ye-polar ekwazi ukunyibilikisa i-ethyl cellulose kwinqanaba elithile. Isetyenziswa ngokuqhelekileyo kwizicelo ezizodwa apho iipropati zayo ezithile zifunwa, njengasekuqulunqweni kweefom ezithile zedosi yamayeza kunye neengubo ezikhethekileyo.

I-Propylene Glycol Monomethyl Ether (PGME): I-PGME sisinyibiliki se-polar esibonisa ukunyibilika okuphakathi kwe-ethyl cellulose. Ihlala isetyenziselwa ukudibanisa nezinye izinyibilikisi ukuphucula ukunyibilika kunye neempawu zokwenza ifilimu. I-PGME idla ngokusetyenziswa xa kusenziwa ii-coatings, ii-inki kunye nezinto ezincamathelayo.

Ipropylene Carbonate: Ipropylene carbonate sisinyibilikisi sepolar esine-solubility efanelekileyo ye-ethyl cellulose. Ihlala isetyenziswa kwizicelo ezizodwa apho iipropathi zayo ezithile, ezifana nokuguquguquka okuphantsi kunye nendawo yokubilisa ephezulu, zinenzuzo.

I-Dimethyl Sulfoxide (i-DMSO): I-DMSO yi-solvent ye-polar aprotic ekwazi ukutshabalalisa i-cellulose ye-ethyl ukuya kwinqanaba elithile. Isetyenziswa ngokuqhelekileyo kwizicelo zamachiza ngokukwazi kwayo ukunyibilikisa uluhlu olubanzi lweekhompawundi. Nangona kunjalo, i-DMSO inokubonisa ukuhambelana okulinganiselweyo kunye nezixhobo ezithile kwaye inokuba neempawu zokucaphukisa ulusu.

I-N-Methyl-2-pyrrolidone (NMP): I-NMP yi-solvent ye-polar ene-solubility ephezulu ye-ethyl cellulose. Ngokuqhelekileyo isetyenziswe kwizicelo ezizodwa apho iimpawu zayo ezithile, ezifana neendawo zokubilisa eziphezulu kunye ne-toxicity ephantsi, zifunwa.

I-Tetrahydrofuran (THF): I-THF sisinyibilikisi se-polar esibonisa ukunyibilika okugqwesileyo kwe-ethyl cellulose. Isetyenziswa ngokuqhelekileyo kwizicwangciso zebhubhoratri zokuchithwa kweepolymers kunye ne-solvent reaction. Nangona kunjalo, i-THF inokutsha kakhulu kwaye ibeka iingozi zokhuseleko ukuba ayiphathwa kakuhle.

I-Dioxane: I-Dioxane sisinyibiliki se-polar esinokunyibilikisa i-ethyl cellulose ukuya kwinqanaba elithile. Isetyenziswa ngokuqhelekileyo kwizicelo ezizodwa apho iipropati zayo ezithile, njengendawo yokubilisa ephezulu kunye netyhefu ephantsi, zinenzuzo.

I-Benzene: I-Benzene sisinyibilikisi esingeyo-polar esibonisa ukunyibilika kakuhle kwe-ethyl cellulose. Nangona kunjalo, ngenxa yetyhefu ephezulu kunye ne-carcinogenicity, ukusetyenziswa kwayo kuyekwe kakhulu kulungiselelwa ezinye iindlela ezikhuselekileyo.

I-Methyl Ethyl Ketone (MEK): I-MEK yi-solvent ye-polar ene-solubility efanelekileyo ye-ethyl cellulose. Isetyenziswa ngokuqhelekileyo kwizicelo zemizi-mveliso yokwenziwa kweengubo zokugquma, i-adhesives, kunye nee-inki. Nangona kunjalo, i-MEK inokutsha kakhulu kwaye inokubangela iingozi zokhuseleko ukuba ayiphathwa kakuhle.

I-Cyclohexanone: I-Cyclohexanone yi-solvent ye-polar enokunyibilikisa i-ethyl cellulose kwinqanaba elithile. Ngokuqhelekileyo isetyenziswe kwizicelo ezizodwa apho iimpawu zayo ezithile, ezifana neendawo zokubilisa eziphezulu kunye ne-toxicity ephantsi, zifunwa.

I-Ethyl Lactate: I-Ethyl lactate sisinyibilikisi se-polar esivela kwimithombo ehlaziyekayo. Ibonisa ukunyibilika okuphakathi kwe-ethyl cellulose kwaye iqhele ukusetyenziswa kwizicelo ezizodwa apho ubutyhefu bayo obuphantsi kunye nokubola kwayo kunenzuzo.

I-Diethyl Ether: I-Diethyl ether yi-solvent engeyiyo i-polar enokunyibilikisa i-ethyl cellulose ukuya kwinqanaba elithile. Nangona kunjalo, iyaguquguquka kakhulu kwaye iyatsha, ibeka iingozi zokhuseleko ukuba ayiphathwa kakuhle. I-Diethyl ether isetyenziswa ngokuqhelekileyo kwizicwangciso zebhubhoratri zokuchithwa kweepolymers nanjenge-solvent reaction.

I-Petroleum Ether: I-ether ye-petroleum i-solvent engeyiyo i-polar ephuma kwi-petroleum fractions. Ibonisa ukunyibilika okulinganiselweyo kwe-ethyl cellulose kwaye isetyenziswa ikakhulu kwizicelo ezizodwa apho iimpawu zayo ezithile zifunwa.

kukho uluhlu olubanzi lwezinyibilikisi ezikhoyo zokunyibilikisa i-ethyl cellulose, nganye ineseti yayo yeenzuzo kunye nemida. Ukukhethwa kwe-solvent kuxhomekeke kwizinto ezahlukeneyo, kubandakanywa iimfuno zokunyibilika, iimeko zokusetyenzwa, ukuqwalaselwa kokhuseleko, kunye neenkxalabo zokusingqongileyo. Kubalulekile ukuvavanya ngokucophelela le miba kwaye ukhethe i-solvent efanelekileyo kakhulu kwisicelo ngasinye ukufezekisa iziphumo ezilungileyo ngelixa uqinisekisa ukhuseleko kunye nokuzinza kokusingqongileyo.