Iingubo ezisekelwe kwi-cellulose ziye zafumana ukuthandwa okuphawulekayo kumashishini ahlukeneyo ngenxa yendalo ehambelana nokusingqongileyo, ukuguquguquka, kunye neempawu ezibalaseleyo zokusebenza.Nangona kunjalo, ukukhetha i-cellulose efanelekileyo yokusetyenziswa kwe-coating kunokuba ngumsebenzi onzima, kuthathelwa ingqalelo uluhlu olubanzi lwezinto eziphuma kwi-cellulose ezikhoyo.Eli nqaku lijolise ekunikezeni isikhokelo esibanzi malunga nendlela yokukhetha i-cellulose efanelekileyo kakhulu kwiinjongo zokugubungela, ngokuqwalasela izinto ezahlukeneyo ezifana nokusebenza, iipropati kunye neemfuno zesicelo.
Ukuqonda iCellulose kunye neZinto zayo:
I-Cellulose yipolymer yendalo efumaneka kakhulu kwiindonga zeeseli zesityalo.Iqulunqwe ngeeyunithi zeglucose ezidityaniswe kunye, zenza amatyathanga amade.I-cellulose derivatives ifunyenwe ngokuguqula isakhiwo se-cellulose ngokusebenzisa iinkqubo zemichiza.Izixhobo eziqhelekileyo ze-cellulose ezisetyenziswa kwiingubo ziquka i-methyl cellulose (MC), i-hydroxypropyl cellulose (HPC), i-hydroxyethyl cellulose (HEC), kunye ne-carboxymethyl cellulose (CMC), phakathi kwabanye.
Izinto ekufuneka ziqwalaselwe xa ukhetha iCellulose yoKutyabeka:
Ukusebenza: Ukumisela indima ethile kunye neempawu ezifunwayo ze-cellulose ekuqulunqweni kwengubo.Ngokomzekelo, ukuba i-coating ifuna ukuqina kunye nokugcinwa kwamanzi iipropati, i-methyl cellulose (MC) okanye i-hydroxyethyl cellulose (HEC) ingaba yinto efanelekileyo yokukhetha.Ukuba ukunamathela okuphuculweyo kuyimfuneko, i-carboxymethyl cellulose (CMC) okanye i-hydroxypropyl cellulose (HPC) inokufaneleka ngakumbi.
I-Viscosity kunye ne-Rheology: Qwalasela i-viscosity efunwayo kunye nokuziphatha kwe-rheological yengubo.Iimveliso ezahlukeneyo ze-cellulose zibonisa ukutyeba nokuhamba kweempawu ezahlukeneyo.Ukhetho kufuneka lusekelwe kwindlela yesicelo esifunwayo, njengesitshizi, ibrashi, okanye i-roller coating, kunye nobukhulu obufunwayo kunye neempawu zokulinganisa.
I-Solubility kunye nokuhambelana: Vavanya ukunyibilika kwe-cellulose derivatives kwinkqubo ekhethiweyo yokwambathisa.Ezinye izinto eziphuma kuzo zinyibilika emanzini, ngelixa ezinye zifuna izinyibilikisi zendalo ukuze zinyibilike.Kubalulekile ukuqinisekisa ukuhambelana phakathi kwe-cellulose derivative kunye namanye amacandelo okuqulunqwa kwe-coating ukuphepha imiba yokuhambelana okanye ukuhlukana kwesigaba.
Ukwenziwa kwefilimu kunye nokuncamathela: Vavanya isakhono sokwenza ifilimu yeselulosi kunye negalelo layo kwiimpawu zokuncamathela.Ezinye i-cellulose derivatives zinobuchule obungcono bokwenza ifilimu kwaye zinokuphucula ukunamathela kwengubo kwi-substrate.
Ukuchasana kweMichiza kunye nokusiNgqongileyo: Qwalasela iipropathi zokuchasana ezifunekayo kwisicelo esithile sokugquma.Izahlulo ezahlukeneyo zeselulosi zibonelela ngeendlela ezahlukeneyo zokuxhathisa imichiza, imitha ye-UV, ukufuma, kunye nokuguquguquka kobushushu.Kubalulekile ukuba ukhethe i-cellulose derivative enika ukuqina okufunekayo kunye nokukhuselwa kwesicelo esicetywayo sokwambathisa.
Ukuthotyelwa kweMithetho: Qinisekisa ukuba i-cellulose derivative ekhethiweyo iyahambelana nemigaqo yoshishino efanelekileyo, efana naleyo imalunga nempilo, ukhuseleko kunye nemigangatho yokusingqongileyo.Khangela iziqinisekiso kunye neemvume eziqinisekisa ukufaneleka kwe-cellulose derivative ye-coating applications.
Iindleko kunye nokuFumana: Vavanya ukuphumelela kweendleko kunye nokufumaneka kwe-derivative cellulose.Qwalasela indleko yokwenziwa kwayo iyonke, kuqukwa nenye into ephuma kwi cellulose, ngelixa uqinisekisa ukuba iyahlangabezana neemfuno zokusebenza ezifunekayo.Ubukho kunye nemithombo yonikezelo ethembekileyo kufuneka kwakhona ithathelwe ingqalelo kwimveliso engaphazamisekiyo.
Ukukhetha i-cellulose engcono kakhulu kwizicelo zokugqoka kufuna ukuqwalaselwa ngokucophelela kwezinto ezifana nokusebenza, i-viscosity, i-solubility, ukubunjwa kwefilimu, iipropati zokumelana, ukuthotyelwa kokulawula, iindleko, kunye nokufumaneka.Ngokuvavanya le miba kunye nokulungelelanisa kunye neemfuno ezikhethekileyo zokuqulunqwa kwengubo, umntu unokukhetha eyona nto ifanelekileyo ye-behang cellulose derivative eyandisa ukusebenza, ukuqina, kunye nomgangatho jikelele wenkqubo yokugqoka.Isigqibo esinolwazi ekukhetheni i-Ibang cellulose inegalelo ekufakeni izicelo zokugquma ngempumelelo kumashishini ahlukeneyo.
