Ii-cellulose ethers ziluhlobo lwee-polymers ezinobunzima obuphezulu beemolekyuli ezinyibilikayo emanzini ezithathwe kwi-cellulose. Ziye zasetyenziswa kakhulu kwishishini lokwakha njengezinto ezidityanisiweyo eziphucula ukusebenza kweemveliso ezisekwe kwisamente kunye ne-gypsum. Phakathi kwazo, i-hydroxypropyl methylcellulose (HPMC) yenye yezona ethers zibalulekileyo ze-cellulose kwi-putty.
Njengomvelisi we-HPMC oqeqeshiweyo, siza kukuchazela indima ye-cellulose ether kwi-putty. Siyathemba ukuba le posi inika ulwazi oluluncedo kwabo banomdla kwesi sihloko.
1. Ukugcinwa kwamanzi
Omnye wemisebenzi ephambili ye-cellulose ether kwi-putty kukugcina amanzi. I-Putty yinto efana ne-paste esetyenziselwa ukugcwalisa izithuba kunye nemingxunya kwiindawo ezifana neendonga, iisilingi kunye nomgangatho. Amanzi sisithako esibalulekileyo kwi-putty formulations kuba inceda ekunyibilikiseni izithako kwaye inika amandla okusebenza. Nangona kunjalo, amanzi amaninzi anokubangela ukuba i-putty yome kwaye inciphe ngokukhawuleza, nto leyo ekhokelela ekuqhekekeni nasekugqityweni okuphantsi komgangatho.
I-cellulose ether, ingakumbi i-HPMC, yenza isakhiwo esifana nejeli xa ixutywe namanzi, nto leyo enokuphucula ukugcinwa kwamanzi kwe-putty. Amaqela e-hydrophilic e-HPMC anokufunxa iimolekyuli zamanzi aze azithintele ekuphumeni ngokukhawuleza. Olu phawu luvumela ixesha elide lokusebenza kunye nokuthungwa kwe-putty okuhlala kuhleli.
2. Ukuphucula ukusebenza kakuhle
Omnye umsebenzi obalulekileyo we-cellulose ether kwi-putty kukuphucula ukusebenza kwayo. Ukusebenza kakuhle kubhekisa ekubeni i-putty isetyenziswa lula kwaye ibunjwe ukuze ifumane umphezulu ogudileyo. I-Cellulose ether inokunyusa ukugeleza kunye nokusasazeka kwe-putty ngokunciphisa ukungqubana phakathi kwamasuntswana kunye nokwandisa ukuthambisa kwenkqubo.
Ukongezwa kwee-cellulose ethers kwi-putty kukwanciphisa ukuvaleka komoya okubangelwa kukuxubana, okunokukhokelela kwiindawo ezingalinganiyo kunye nokunamathelana okungekuhle. Ukusetyenziswa kwee-cellulose ethers kuphucula ukuguda kunye nokuhambelana kwe-putty, okubangela ukusebenza ngcono ngokubanzi kunye nokugqitywa okunomtsalane ngakumbi.
3. Yandisa ukunamathela
Enye inzuzo ye-cellulose ether kwi-putty kukwanda kokunamathela. Ii-putty zisetyenziselwa ukugcwalisa izithuba kunye neentanda, kunye nokwenza umphezulu ogudileyo wepeyinti okanye ezinye izinto ezigqityiweyo. Ke ngoko, i-putty kufuneka ikwazi ukunamathela kwi-substrate kwaye inike ikhonkco eliqinileyo.
I-cellulose ether, ingakumbi i-HPMC, inokuphucula ukunamathela kwe-putty ngokwenza ifilimu kumphezulu we-substrate. Ifilimu iphucula unxibelelwano phakathi kwe-putty kunye ne-substrate kwaye inceda ukugcwalisa ukungalungelelani komphezulu. Oku kubangela ukubopha okuqinileyo kunye nokugqitywa okuhlala ixesha elide.
4. Nciphisa ukuncipha
Ukushwabana yingxaki eqhelekileyo nge-putty, kuba inokukhokelela ekuqhekekeni nasekugqityweni okungengomgangatho. Ii-cellulose ethers zinokunceda ekunciphiseni ukushwabana kwe-putty ngokuphucula ukugcinwa kwamanzi kunye nokusebenza kakuhle kwe-putty. Amanzi ayaphela kancinci, enika i-putty ubume obuthambileyo obunceda ukuthintela ukuqhekeka kunye nemingxunya ukuba ingakheki ngexesha lokomiswa.
Ukongeza, i-cellulose ether inokunciphisa ukushwabana kweplastiki kwe-putty, oko kukuthi, ukushwabana okwenzeka ngexesha lokuseta kokuqala. Olu phawu lubaluleke kakhulu kwi-putty ezicwangciswa ngokukhawuleza, njengoko inceda ukugcina ukuthembeka komphezulu kwaye ithintele ukwakheka kwemifantu.
5. Ukuqina okuphuculweyo
Okokugqibela, ii-cellulose ethers zinokuphucula ukuqina kwe-putty ngokwandisa ukumelana kwayo nezinto ezingqongileyo ezifana nokutshintsha kobushushu, ukufuma kunye nokukrala. Iimpawu zokwenza ifilimu ze-cellulose ether zinokubonelela ngomqobo okhuselayo kumphezulu we-putty ukuthintela ukungena kwamanzi kunye nezinye izinto ezingcolisayo.
Ngaphezu koko, i-cellulose ether inokuphucula amandla e-flexural kunye nokumelana nempembelelo ye-putty, okwenza ukuba imelane nokuqhekeka nokuqhekeka. Le mpawu ibaluleke kakhulu kwiindlela apho ii-putty zihlala ziphathwa okanye zichaphazeleka, njengakwimisebenzi yokulungisa okanye yokuhombisa.
ukuququmbela
Ukuqukumbela, ii-cellulose ethers, ingakumbi i-HPMC, zizinto ezibalulekileyo eziphucula ukusebenza kwe-putty. Imisebenzi yazo ibandakanya ukugcinwa kwamanzi, ukuphucula ukucutshungulwa, ukwanda kokunamathela, ukunciphisa ukushwabana kunye nokuqina okuphuculweyo. Ukusebenzisa ii-cellulose ethers kunceda ukuphucula umgangatho kunye nokusebenza kwe-putty, okubangela ukugqitywa okungcono kunye nobomi obude. Njengomvelisi we-HPMC oqeqeshiweyo, sizimisele ukubonelela abathengi nge-cellulose ether ekumgangatho ophezulu kunye nenkxaso yobugcisa.
Ixesha lokuthumela: Julayi-20-2023