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I-CMC iyidlala njani indima ekwenzeni iiseramikhi

I-CMC iyidlala njani indima ekwenzeni iiseramikhi

I-sodium carboxymethyl cellulose (CMC) idlala iindima ezininzi ezibalulekileyo kwimveliso yeeseramics, ngakumbi ekusetyenzweni nasekubunjweni kweeramics. Nantsi indlela iCMC esetyenziswa ngayo kumanqanaba ahlukeneyo emveliso yeeseramikhi:

  1. Isibophelelo kwiMizimba yeCeramic: I-CMC isetyenziswa ngokuqhelekileyo njengesibophelelo kwimizimba ye-ceramic okanye ukwakhiwa kwe-greenware. Umgubo weCeramic, njengodongwe okanye ialumina, ixutywa namanzi kunye ne-CMC ukwenza ubunzima beplastiki obunokubunjwa okanye bubunjwe ngokweendlela ezinqwenelekayo, ezifana neethayile, izitena, okanye udongwe. I-CMC isebenza njengesibophelelo sexeshana, ibambe amasuntswana e-ceramic kunye ngexesha lokubunjwa kunye nezigaba zokomisa. Inika ubumbano kunye neplastiki kubunzima beceramic, ivumela ukuphathwa ngokulula kunye nokwenza iimilo ezintsonkothileyo.
  2. I-Plasticizer kunye ne-Rheology Modifier: I-CMC isebenza njenge-plasticizer kunye ne-rheology modifier kwi-ceramic slurries okanye iziliphu ezisetyenziselwa ukuphosa, ukuphosa, okanye iinkqubo ze-extrusion. I-CMC iphucula iipropati zokuhamba kunye nokusebenza kokumiswa kwe-ceramic, ukunciphisa i-viscosity kunye nokuphucula umbane. Oku kuququzelela ukubunjwa okanye ukubunjwa kweekeramics zibe ngumbumba okanye zife, ziqinisekisa ukuzaliswa okufanayo kunye neziphene ezincinci kwiimveliso zokugqibela. I-CMC iphinda ithintele ukuchithwa okanye ukulungiswa kwee-ceramic particles ekumisweni, ukugcina ukuzinza kunye ne-homogeneity ngexesha lokucubungula.
  3. I-Deflocculant: Kwi-ceramic processing, i-CMC isebenza njenge-deflocculant ukusabalalisa kunye nokuzinzisa amaqhekeza e-ceramic ekumisweni kwamanzi. Iimolekyuli ze-CMC zibhengeza kumphezulu wamasuntswana e-ceramic, zigxotha enye nenye kwaye zithintela i-agglomeration okanye i-flocculation. Oku kukhokelela ekuphuculeni ukusabalalisa kunye nokuzinza kokumiswa, okwenza ukuba ukuhanjiswa okufanayo kweengqungquthela ze-ceramic kwi-slurries okanye i-casting slips. Ukunqunyanyiswa kwe-Deflocculated kubonisa ukuguquguquka okungcono, ukuncitshiswa kwe-viscosity, kunye nokusebenza okuphuculweyo kokuphosa, okukhokelela kwi-ceramics ekumgangatho ophezulu kunye ne-microstructures efanayo.
  4. I-Binder Burnout Agent: Ngexesha lokudubula okanye ukucwiliswa kwe-ceramic greenware, i-CMC isebenza njenge-agent yokutshisa i-binder. I-CMC ifumana ukubola kwe-thermal okanye i-pyrolysis kumaqondo obushushu aphezulu, ishiya ngasemva iintsalela zekhabhoni eziququzelela ukususwa kwezibophelelo ze-organic kwimizimba ye-ceramic. Le nkqubo, eyaziwa ngokuba yi-binder burnout okanye i-debinding, isusa izinto eziphilayo kwi-ceramics eluhlaza, ukuthintela iziphene ezifana nokuqhekeka, ukulwa, okanye i-porosity ngexesha lokudubula. Iintsalela zeCMC zikwanegalelo ekwenziweni kwepore kunye nokuvela kwerhasi, ukukhuthaza ukuxinana kunye nokudityaniswa kwemathiriyeli yeceramic ngexesha lokucoca.
  5. Ulawulo lwe-Porosity: I-CMC ingasetyenziselwa ukulawula i-porosity kunye ne-microstructure ye-ceramics ngokuphembelela i-kinetics yokomisa kunye nokuziphatha kwe-shrinkage ye-greenware. Ngokulungelelanisa ukuxinana kwe-CMC kwi-ceramic suspensions, abavelisi banokulungelelanisa izinga lokumisa kunye nesantya sokucutha kwee-ceramics eziluhlaza, ukwandisa ukuhanjiswa kwepore kunye nokuxinana kwiimveliso zokugqibela. I-porosity elawulwayo ibalulekile ekufezekiseni iipropathi ezinqwenelekayo zoomatshini, ezishushu, kunye nezombane kwi-ceramics kwizicelo ezithile, ezifana ne-filtration membranes, i-catalyst supports, okanye i-thermal insulation.

I-sodium carboxymethyl cellulose (CMC) idlala indima ebalulekileyo kwimveliso yeeseramics ngokusebenza njenge-binder, iplastiki, i-deflocculant, i-agent yokutshisa i-binder, kunye ne-arhente yokulawula i-porosity. Iimpawu zayo eziguquguqukayo zinegalelo ekusetyenzweni, ekubunjweni, kunye nomgangatho weeseramics, evumela ukuveliswa kweemveliso ze-ceramic ezisebenza kakhulu ezineempawu ezilungiselelwe usetyenziso lwemizi-mveliso eyahlukeneyo.


Ixesha lokuposa: Mar-07-2024
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