I-Cellulose ethers zi-polymers eziguquguqukayo kunye neziguquguqukayo kunye nezicelo kumashishini ahlukeneyo, kubandakanywa nokuveliswa kweeseramics ze-honeycomb kunye nezinye iimveliso.
1. Intshayelelo ye-cellulose ether:
I-cellulose ethers iphuma kwi-cellulose, i-polymer yendalo efumaneka kwiindonga zeeseli zezityalo. Ifunyenwe ngokuguqulwa kweekhemikhali ze-cellulose, okubangelwa yi-polymers e-soluble yamanzi okanye i-dispersible water. Imithombo eqhelekileyo ye-cellulose ibandakanya i-pulp yomthi, ikotoni, kunye nezinye izinto zezityalo.
2. Iindidi ze-cellulose ethers:
Kukho iintlobo ezininzi ze-cellulose ethers, nganye ineempawu ezizodwa ezifanelekileyo kwizicelo ezithile. Ezinye iintlobo eziqhelekileyo ziquka i-methylcellulose (MC), i-ethylcellulose (EC), i-hydroxyethylcellulose (HEC), i-hydroxypropylcellulose (HPC), kunye ne-carboxymethylcellulose (CMC). Ukukhethwa kwe-cellulose ether kuxhomekeke kwiipropati ezifunwayo zemveliso yokugqibela.
3. Inkqubo yokwenziwa kwemveliso:
Ukuveliswa kwe-cellulose ethers kubandakanya amanyathelo amaninzi, kuquka ukutsalwa kwe-cellulose, ukuguqulwa kweekhemikhali kunye nokucoca. I-Cellulose ikhutshwa kuqala kwizityalo kwaye emva koko iimpendulo zeekhemikhali zisetyenziselwa ukwazisa amaqela asebenzayo afana ne-methyl, i-ethyl, i-hydroxyethyl okanye i-carboxymethyl. Isiphumo se-cellulose ether siyacocwa ukuze sisuse ukungcola kwaye sifezekise umgangatho ofunekayo.
4. Iipropati ze-cellulose ether:
I-cellulose ethers ineepropathi ezahlukeneyo ezinqwenelekayo, ezenza ukuba zilungele uluhlu olubanzi lwezicelo. Ezi zakhiwo ziquka ukunyibilika kwamanzi, amandla okwenza ifilimu, amandla okuqina, kunye nokuzinza phezu kobushushu obubanzi kunye noluhlu lwe-pH. Ezi zakhiwo zinegalelo ekusetyenzisweni kwezinto ezininzi ze-cellulose ethers kumashishini ahlukeneyo.
5. Ukusetyenziswa kwe-cellulose ether:
I-cellulose ethers isetyenziswa kumashishini amaninzi, kubandakanywa amayeza, ukutya, ukwakhiwa, iingubo kunye neeseramics. Ukusetyenziswa kwayo kususela ekusetyenzisweni njenge-ejenti yokutyeba ekutyeni ukuya ekuphuculeni iimpawu zezinto zokwakha. Kwintsimi yeekeramics, i-cellulose ethers idlala indima ebalulekileyo ekuveliseni i-honeycomb ceramics.
6. Iselulosi ether kwiseramikhi yenqatha lobusi:
Iiseramics ze-honeycomb zizinto zesakhiwo kunye neeseli ezihlelwe kwi-hexagonal okanye iphethini yobusi. Ezi ceramics zaziwa ngommandla wazo ophakamileyo, ukwanda kwe-thermal ephantsi, kunye nobushushu obugqwesileyo kunye neempawu zokudlulisa ubunzima. I-cellulose ethers isetyenziselwa ukwenza i-honeycomb Ceramics ngezi zizathu zilandelayo:
I-Binders kunye ne-Rheology Modifiers: Ii-ether ze-cellulose zisebenza njengezibophelelo, zibambe iincinci ze-ceramic ngexesha lokubumba. Ukongezelela, isebenza njenge-rheology modifier, echaphazela ukuhamba kunye nokuguqulwa kwe-ceramic slurries.
Ukwakhiwa komzimba oluhlaza: I-Ceramic slurries equkethe i-cellulose ethers isetyenziselwa ukwenza imizimba eluhlaza kwiiseramics ze-honeycomb. Imizimba eluhlaza zizakhiwo ze-ceramic ezingatshiyo ezibunjwe kwaye zomiswe phambi kokuba kuqhutyekwe phambili.
Ukudibanisa kunye nokumisa: I-cellulose ethers inceda iinqununu ze-ceramic zidibanise ngexesha lokumisa. Ikhusela ukuqhekeka kunye nokuguqulwa, ukuqinisekisa ukuba umzimba oluhlaza ugcina ingqibelelo yesakhiwo.
Ukutshisa kunye ne-sintering: Kwizigaba ezilandelayo zemveliso ye-honeycomb ye-ceramic, i-cellulose ethers iyatshisa, ishiya i-voids enceda ukwenza isakhiwo se-honeycomb. Inkqubo ye-sintering ke iqhubela phambili ekufumaneni imveliso yokugqibela yeceramic.
7. Olunye usetyenziso lwe-cellulose ethers:
Ukongeza kwiikeramics ze-honeycomb, ii-cellulose ethers zisetyenziswa kwiimveliso ezahlukeneyo kunye namashishini:
I-Pharmaceutical: Isetyenziswa njenge-binder kunye ne-disintegrant kwi-tablet formulations.
Umzi-mveliso wokutya: I-cellulose ethers isetyenziswa njengezinto ezityebisayo, izinzisi kunye nezinyulisi ekutyeni.
Izinto zokwakha: Iphucula iipropati zodaka, i-adhesives kunye neengubo.
Izinto ezilukiweyo: Iellulosi ethers zisetyenziswa kushicilelo lwelaphu kunye nobungakanani bezicelo.
8. Imingeni kunye neengqwalasela:
Ngelixa i-cellulose ethers ibonelela ngeenzuzo ezininzi, ukusetyenziswa kwazo kukwazisa imingeni ethile. Oku kunokubandakanya imiba enokubakho yokusingqongileyo enxulumene nenkqubo yemveliso kunye nesidingo sokufumana imathiriyeli ekrwada ngokuzinzileyo. Umsebenzi wophando kunye nophuhliso uyaqhubeka ukujongana nale mingeni kunye nokuphucula ukuzinza ngokubanzi kweemveliso ze-cellulose ether.
9. Iintsingiselo kunye nophuhliso lwexesha elizayo:
Njengoko iteknoloji iqhubela phambili kunye nokuzinza iba ngumba obaluleke ngakumbi, ikamva le-cellulose ethers linokubandakanya ukutsha kwiinkqubo zokuvelisa, ukusetyenziswa okwandisiweyo kwezinto ezisekelwe kwi-bio-based, kunye nokuphuhliswa kwezicelo ezintsha. Ubuninzi be-cellulose ethers buyenza ibe yimathiriyeli ethembisayo kumashishini ahlukeneyo, kwaye uphando oluqhubekayo lunokuveza izinto ezintsha ezinokwenzeka.
10. Isiphelo:
I-Cellulose ethers ziipolymers eziguquguqukayo ezinosetyenziso oluninzi kumashishini amaninzi. Ukusetyenziswa kwayo kwii-ceramics zeselula kugxininisa ukubaluleka kwayo ekubunjweni kwezinto eziphambili ezineempawu ezizodwa. Njengoko amashishini aqhubeka efuna izinto ezizinzileyo nezisebenzayo, ii-cellulose ethers kulindeleke ukuba zidlale indima ebalulekileyo ekuhlangabezaneni nezi mfuno. Uphando oluqhubekayo kunye nophuhliso luya kwandisa ngakumbi ukusetyenziswa kweemveliso ze-cellulose ether kunye nokuphucula ukuzinza kwazo zonke.
Ixesha lokuposa: Jan-23-2024