01. Iimpawu ze-sodium carboxymethylcellulose
I-sodium carboxymethyl cellulose yi-anionic polymer electrolyte. Ubungakanani bokutshintshwa kwe-CMC yorhwebo buqala kwi-0.4 ukuya kwi-1.2. Ngokuxhomekeke kubunyulu, imbonakalo imhlophe okanye imhlophe qhwa.
1. Ukuqina kwesisombululo
Ubuninzi besisombululo samanzi se-CMC buyanda ngokukhawuleza ngokwanda koxinzelelo, kwaye isisombululo sineempawu zokuhamba kwe-pseudoplastic. Izisombululo ezinezinga eliphantsi lokutshintshwa (DS=0.4-0.7) zihlala zine-thixotropy, kwaye ubuninzi obubonakalayo buya kutshintsha xa kufakwa i-shear okanye kususwa kwisisombululo. Ubuninzi besisombululo samanzi se-CMC buyancipha ngobushushu obukhulayo, kwaye esi siphumo sinokuguqulwa xa ubushushu bungadluli kwi-50 °C. Kubushushu obuphezulu ixesha elide, i-CMC iya konakala. Le yimbangela yokuba i-bleed glaze kulula ukuyijika ibe mhlophe kwaye yonakale xa kuprintwa i-thin line pattern bleed glaze.
I-CMC esetyenziselwa i-glaze kufuneka ikhethe imveliso enokutshintshwa okuphezulu, ingakumbi i-glaze ephuma igazi.
2. Isiphumo sexabiso le-pH kwi-CMC
I-viscosity yesisombululo samanzi se-CMC ihlala iqhelekile kuluhlu olubanzi lwe-pH, kwaye izinzile kakhulu phakathi kwe-pH 7 kunye ne-9. Nge-pH
Ixabiso liyancipha, kwaye i-CMC ijika ukusuka kwimo yetyuwa ukuya kwimo ye-asidi, enganyibilikiyo emanzini kwaye inyibilike. Xa ixabiso le-pH lingaphantsi kwe-4, uninzi lwemo yetyuwa lujika lube yimo ye-asidi kwaye lunyibilike. Xa i-pH ingaphantsi kwe-3, inqanaba lokutshintshwa lingaphantsi kwe-0.5, kwaye linokutshintsha ngokupheleleyo ukusuka kwimo yetyuwa ukuya kwimo ye-asidi. Ixabiso le-pH lotshintsho olupheleleyo lwe-CMC enezinga eliphezulu lokutshintshwa (ngaphezulu kwe-0.9) lingaphantsi kwe-1. Ke ngoko, zama ukusebenzisa i-CMC enezinga eliphezulu lokutshintshwa kwe-glaze yokuntywila.
3. Ubudlelwane phakathi kwe-CMC kunye nee-ion zesinyithi
Ii-ion zesinyithi ezi-monovalent zinokwenza iityuwa ezinyibilikayo emanzini nge-CMC, ezingayi kuchaphazela i-viscosity, ukucaca kunye nezinye iimpawu zesisombululo samanzi, kodwa i-Ag+ yinto eyahlukileyo, eya kubangela ukuba isisombululo sikhawule. Ii-ion zesinyithi ezi-divalent, ezifana ne-Ba2+, i-Fe2+, i-Pb2+, i-Sn2+, njl. zibangela ukuba isisombululo sikhawule; i-Ca2+, i-Mg2+, i-Mn2+, njl. azinampembelelo kwisisombululo. Ii-ion zesinyithi ezi-trivalent zenza iityuwa ezinganyibilikiyo nge-CMC, okanye i-precipitate okanye i-gel, ngoko i-ferric chloride ayinakujiya nge-CMC.
Kukho ukungaqiniseki kwisiphumo sokunyamezela ityuwa se-CMC:
(1) Inxulumene nohlobo lwetyuwa yesinyithi, ixabiso le-pH yesisombululo kunye nomlinganiselo wokutshintshwa kwe-CMC;
(2) Inxulumene nomyalelo wokuxuba kunye nendlela ye-CMC kunye netyuwa.
I-CMC enomlinganiselo ophezulu wokutshintshwa ihambelana ngcono neetyuwa, kwaye isiphumo sokongeza ityuwa kwisisombululo se-CMC singcono kuneso samanzi anetyuwa.
I-CMC ilungile. Ke ngoko, xa ulungiselela i-osmotic glaze, ngokuqhelekileyo yinyibilikise i-CMC emanzini kuqala, uze emva koko wongeze isisombululo setyuwa ye-osmotic.
02. Indlela yokuqaphela i-CMC kwimarike
Ihlulwe ngobunyulu
Umgangatho ophezulu wobunyulu — umxholo ungaphezulu kwe-99.5%;
Uhlobo olucocekileyo lweshishini — umxholo ungaphezulu kwe-96%;
Imveliso ekrwada — umxholo wayo ungaphezulu kwama-65%.
Ihlulwe ngokwe-viscosity
Uhlobo lwe-viscosity ephezulu – i-viscosity yesisombululo se-1% ingaphezulu kwe-5 Pa s;
Uhlobo lwe-viscosity ephakathi – i-viscosity yesisombululo se-2% ingaphezulu kwe-5 Pa s;
Uhlobo lwe-viscosity ephantsi – i-viscosity yesisombululo se-2% ngaphezulu kwe-0.05 Pa·s.
03. Inkcazo yeemodeli eziqhelekileyo
Umenzi ngamnye unemodeli yakhe, kuthiwa kukho iintlobo ezingaphezu kwama-500. Eyona modeli ixhaphakileyo inamacandelo amathathu: X—Y—Z.
Ileta yokuqala imele ukusetyenziswa kweshishini:
F – uhlobo lokutya;
I——ibanga lezemizi-mveliso;
C - uhlobo lweseramikhi;
O – umgangatho wepetroleum.
Unobumba wesibini umele inqanaba le-viscosity:
H – i-viscosity ephezulu
M——ubungqindilili obuphakathi
L – i-viscosity ephantsi.
Unobumba wesithathu umele inqanaba lokutshintsha, kwaye inani lalo elahlulwe ngo-10 linqanaba lokwenyani lokutshintsha i-CMC.
Umzekelo:
Imodeli ye-CMC yi-FH9, oko kuthetha i-CMC enomgangatho wokutya, i-viscosity ephezulu kunye ne-degree yokutshintshwa eyi-0.9.
Imodeli ye-CMC yi-CM6, oko kuthetha i-CMC yodidi lwe-ceramic, i-viscosity ephakathi kunye ne-degree yokutshintshwa kwe-0.6.
Ngokufanayo, kukwakho neendidi ezisetyenziswa kumayeza, kwimizi-mveliso yelaphu nakwezinye iindawo, ezingaqhelekanga xa kusetyenziswa imboni yeceramic.
04. Imigangatho yoKhetho lweShishini leCeramic
1. Uzinzo lokubonakala
Le yimeko yokuqala yokukhetha i-CMC ye-glaze
(1) Ukuqina komzimba akutshintshi kakhulu nangaliphi na ixesha
(2) Ubunzulu abutshintshi kakhulu xa kufikwa kubushushu.
2. I-thixotropy encinci
Kwimveliso yeethayile ezifakwe iglasi, i-glaze slurry ayinakuba yi-thixotropic, kungenjalo iya kuchaphazela umgangatho womphezulu ofakwe iglasi, ngoko ke kungcono ukukhetha i-CMC yodidi lokutya. Ukuze kuncitshiswe iindleko, abanye abavelisi basebenzisa i-CMC yodidi lwemizi-mveliso, kwaye umgangatho we-glaze uchaphazeleka lula.
3. Nika ingqalelo kwindlela yovavanyo lwe-viscosity
(1) Uxinzelelo lwe-CMC lunolwalamano oluhambelanayo ne-viscosity, ngoko ke kufuneka kuqwalaselwe ukuchaneka kokulinganisa;
(2) Nika ingqalelo kufana kwesisombululo se-CMC. Indlela engqongqo yokuvavanya kukuxuba isisombululo iiyure ezi-2 ngaphambi kokulinganisa i-viscosity yaso;
(3) Ubushushu bunempembelelo enkulu kwi-viscosity, ngoko ke kufuneka kuqwalaselwe ubushushu obungqongileyo ngexesha lovavanyo;
(4) Nika ingqalelo ekugcinweni kwesisombululo se-CMC ukuze uthintele ukuwohloka kwaso.
(5) Nika ingqalelo kumahluko phakathi kokuxinana kunye nokungaguquguquki.
Ixesha lokuthumela: Jan-05-2023