I-cellulose ethers yiklasi ye-molecular weight high-soluble polymers ezifumaneka kwi-cellulose. Ziye zasetyenziswa ngokubanzi kwishishini lokwakha njenge-admixtures yokuphucula ukusebenza kwimveliso esekwe kwisamente kunye ne-gypsum. Phakathi kwazo, i-hydroxypropyl methylcellulose (HPMC) yenye yezona zinto zibalulekileyo ze-cellulose ethers kwi-putty.
Njengomvelisi we-HPMC oqeqeshiweyo, siya kukuchazela ngendima ye-cellulose ether kwi-putty. Siyathemba ukuba esi sithuba sibonelela ngeembono eziluncedo kwabo banomdla kwesi sihloko.
1. Ukugcinwa kwamanzi
Omnye wemisebenzi ephambili ye-cellulose ether ye-putty kukugcina amanzi. I-Putty yimathiriyeli efana nencama esetyenziselwa ukuvala izithuba kunye neentanda kumphezulu onje ngeendonga, iisilingi kunye nemigangatho. Amanzi ayisithako esibalulekileyo kwi-putty formulations kuba inceda ukunyibilikisa izithako kwaye ibonelela ngokusebenza. Nangona kunjalo, amanzi amaninzi anokubangela ukuba i-putty yome kwaye iyancipha ngokukhawuleza, ekhokelela ekuqhekekeni kunye nokugqitywa komgangatho ophantsi.
I-cellulose ether, ngakumbi i-HPMC, yenza i-gel-efana nesakhiwo xa ixutywe namanzi, enokuphucula ukugcinwa kwamanzi kwi-putty. Amaqela e-hydrophilic e-HPMC anokufunxa iimolekyuli zamanzi kwaye azithintele ekubeni zingabi ngumphunga ngokukhawuleza. Eli nqaku livumela ixesha elide lokusebenza kunye ne-putty texture engaguqukiyo.
2. Ukuphucula ukusebenza
Omnye umsebenzi obalulekileyo we-cellulose ether ye-putty kukuphucula ukusebenza kwayo. Ukusebenziseka kubhekiselele kukulula apho i-putty isetyenziswa kwaye ibunjwe ukufumana indawo egudileyo. I-ether ye-cellulose inokunyusa umbane kunye nokusasazeka kwe-putty ngokunciphisa ukungqubuzana phakathi kwamaqhekeza kunye nokwandisa ukuthambisa kwenkqubo.
Ukongezwa kwe-cellulose ethers kwi-putty kunciphisa ukunyanzeliswa komoya okubangelwa ukuxuba, oku kunokukhokelela kwiindawo ezingalinganiyo kunye nokubambelela kakubi. Ukusetyenziswa kwe-cellulose ethers kuphucula ukuguda kunye nokuhambelana kwe-putty, okukhokelela ekusebenzeni okungcono kunye nokugqitywa okukhangayo.
3. Ukwandisa ukunamathela
Olunye uncedo lwe-cellulose ether ye-putty kukunyuka ukunamathela. Iiputty zisetyenziselwa ukugcwalisa izithuba kunye neentanda, kunye nokudala indawo egudileyo yepeyinti okanye ezinye izinto ezigqityiweyo. Ngoko ke, i-putty kufuneka ikwazi ukunamathela kwi-substrate kwaye inike ibhondi eqinile.
I-cellulose ether, ngakumbi i-HPMC, inokuphucula ukunamathela kwe-putty ngokwenza ifilimu ebusweni be-substrate. Ifilimu iphakamisa uqhagamshelwano phakathi kwe-putty kunye ne-substrate kwaye inceda ukuzalisa izitenxo zomhlaba. Oku kubangela ibhondi eyomeleleyo kunye nokugqiba ixesha elide.
4. Nciphisa ukushwabana
I-Shrinkage yingxaki eqhelekileyo kunye ne-putty, njengoko ingakhokelela ekuqhekekeni kunye nokugqitywa komgangatho ophantsi. I-cellulose ethers inokunceda ukunciphisa i-putty shrinkage ngokuphucula ukugcinwa kwamanzi kunye nokusebenza kwe-putty. Amanzi aba ngumphunga ngokucothayo, enika i-putty ukuthungwa okugudileyo okunceda ukuthintela iintanda kunye neentanda ukuba zenzeke ngexesha lokoma.
Ukongezelela, i-ether ye-cellulose inokunciphisa i-plastic shrinkage ye-putty, oko kukuthi, ukucutha okwenzeka ngexesha lokumisela kokuqala. Le propati ibaluleke kakhulu kwi-putty-setting putty, njengoko inceda ukugcina ingqibelelo yendawo kunye nokuthintela ukubunjwa kweentanda.
5. Ukuphuculwa kokuqina
Okokugqibela, i-cellulose ethers inokuphucula ukuqina kwe-putty ngokunyusa ukuxhathisa kwayo kwizinto ezisingqongileyo ezifana nokutshintsha kobushushu, ukufuma kunye nokukrazula. Iimpawu zokwenza ifilimu ye-cellulose ether inokubonelela ngomqobo wokukhusela kwi-putty surface ukukhusela ukungena kwamanzi kunye nezinye izinto ezingcolileyo.
Ngaphezu koko, i-cellulose ether inokuphucula amandla okuguquguquka kunye nokuchasana kwempembelelo ye-putty, iyenze ukuba imelane nokuqhekeka kunye nokuqhekeka. Le propati ibaluleke kakhulu kwizicelo apho iiputty ziphathwa rhoqo okanye zinefuthe, ezifana nomsebenzi wokulungisa okanye ukugqiba ukuhombisa.
ukuququmbela
Ukuqukumbela, ii-cellulose ethers, ngakumbi i-HPMC, zibalulekile i-putty performance enhancing admixtures. Imisebenzi yabo ibandakanya ukugcinwa kwamanzi, ukuphuculwa kwenkqubo, ukunyuka kokunamathela, ukunciphisa ukucutheka kunye nokuqina okuphuculweyo. Ukusebenzisa i-cellulose ethers kunceda ukuphucula umgangatho kunye nokusebenza kwe-putty, okukhokelela ekugqityweni okungcono kunye nobomi obude. Njengomvelisi we-HPMC oqeqeshiweyo, sizimisele ukubonelela abathengi nge-ether ye-cellulose ekumgangatho ophezulu kunye nenkxaso yobugcisa.
Ixesha lokuposa: Jul-20-2023