01. Katundu wa sodium carboxymethylcellulose
Sodium carboxymethyl cellulose ndi anionic polima electrolyte.Mlingo wolowa m'malo mwa CMC yamalonda umachokera ku 0.4 mpaka 1.2.Kutengera ndi chiyero, mawonekedwe ake ndi oyera kapena oyera.
1. Kukhuthala kwa yankho
Kukhuthala kwa njira yamadzimadzi ya CMC kumawonjezeka kwambiri ndikuwonjezeka kwa ndende, ndipo yankho lili ndi mawonekedwe a pseudoplastic otaya.Mayankho omwe ali ndi digiri yotsika m'malo (DS = 0.4-0.7) nthawi zambiri amakhala ndi thixotropy, ndipo mawonekedwe owoneka bwino adzasintha pamene kumeta ubweya kumagwiritsidwa ntchito kapena kuchotsedwa ku yankho.The mamasukidwe akayendedwe a CMC amadzimadzi njira amachepetsa ndi kuwonjezeka kutentha, ndipo zotsatira zake n'zosinthika pamene kutentha si upambana 50 °C.Pa kutentha kwakukulu kwa nthawi yaitali, CMC idzawonongeka.Ichi ndichifukwa chake glaze yotulutsa magazi imakhala yosavuta kutembenukira kukhala yoyera ndikuwonongeka mukasindikiza mizere yopyapyala yotulutsa magazi.
The CMC ntchito glaze ayenera kusankha mankhwala ndi mkulu mlingo wa m'malo, makamaka magazi glaze.
2. Zotsatira za pH mtengo pa CMC
The mamasukidwe akayendedwe a CMC amadzimadzi njira amakhala bwinobwino mu lonse pH osiyanasiyana, ndipo ndi khola pakati pH 7 ndi 9. Ndi pH
Mtengowo umachepa, ndipo CMC imatembenuka kuchoka ku mchere kupita ku mtundu wa asidi, womwe susungunuke m'madzi ndikutsika.Mtengo wa pH ukakhala wosakwana 4, mchere wambiri umasanduka mawonekedwe a asidi ndikutsika.Pamene pH ili pansi pa 3, mlingo wolowa m'malo ndi wocheperapo 0.5, ndipo ukhoza kusintha kwathunthu kuchokera ku mchere kupita ku mawonekedwe a asidi.Phindu la pH la kusinthika kwathunthu kwa CMC ndi digiri yapamwamba yolowa m'malo (pamwamba pa 0.9) ili pansi pa 1. Choncho, yesani kugwiritsa ntchito CMC ndi chiwerengero chapamwamba cholowa m'malo mwa glaze ya seepage.
3. Ubale pakati pa CMC ndi ayoni zitsulo
Monovalent zitsulo ayoni akhoza kupanga mchere sungunuka m'madzi ndi CMC, zomwe sizingakhudze mamasukidwe akayendedwe, transparency ndi zina katundu wa amadzimadzi yankho, koma Ag + ndi kupatula, zomwe zingachititse kuti mpweya mpweya.Divalent zitsulo ions, monga Ba2+, Fe2+, Pb2+, Sn2+, etc. amachititsa kuti yankho liwonongeke;Ca2+, Mg2+, Mn2+, etc. alibe zotsatira pa yankho.Ma ion azitsulo ang'onoang'ono amapanga mchere wosasungunuka ndi CMC, kapena mpweya kapena gel osakaniza, kotero kuti ferric chloride sangathe kukhuthala ndi CMC.
Pali zokayikitsa pakulekerera kwa mchere kwa CMC:
(1) Zimagwirizana ndi mtundu wa mchere wachitsulo, pH mtengo wa yankho ndi digiri ya m'malo mwa CMC;
(2) Zimagwirizana ndi dongosolo losakanikirana ndi njira ya CMC ndi mchere.
CMC ndi digiri yapamwamba m'malo ali bwino ngakhale ndi mchere, ndi zotsatira za kuwonjezera mchere CMC njira ndi bwino kuposa madzi amchere.
CMC ndi yabwino.Chifukwa chake, pokonzekera osmotic glaze, nthawi zambiri sungunulani CMC m'madzi poyamba, kenaka yikani yankho la mchere wa osmotic.
02. Momwe mungazindikire CMC pamsika
Zodziwika ndi chiyero
High-chiyero kalasi - zili pamwamba 99,5%;
Industrial koyera kalasi - zili pamwamba 96%;
Zamwano mankhwala - zili pamwamba 65%.
Amasankhidwa ndi mamasukidwe akayendedwe
Mkulu mamasukidwe akayendedwe mtundu - 1% yankho mamasukidwe akayendedwe ali pamwamba 5 Pa s;
Kukhuthala kwapakatikati - kukhuthala kwa 2% yankho kuli pamwamba pa 5 Pa s;
Low mamasukidwe akayendedwe mtundu - 2% yankho mamasukidwe akayendedwe pamwamba 0,05 Pa · s.
03. Kufotokozera zitsanzo wamba
Wopanga aliyense ali ndi mtundu wake, akuti pali mitundu yopitilira 500.Chitsanzo chofala kwambiri chimakhala ndi magawo atatu: X—Y—Z.
Kalata yoyamba ikuyimira kugwiritsidwa ntchito kwamakampani:
F - kalasi ya chakudya;
I——giredi yamakampani;
C - kalasi ya ceramic;
O - kalasi ya petroleum.
Chilembo chachiwiri chikuyimira kukhuthala:
H - mkulu mamasukidwe akayendedwe
M——kukhuthala kwapakatikati
L - otsika mamasukidwe akayendedwe.
Kalata yachitatu imayimira kuchuluka kwa kulowetsa m'malo, ndipo nambala yake yogawidwa ndi 10 ndiye digiri yeniyeni yolowa m'malo mwa CMC.
Chitsanzo:
Mtundu wa CMC ndi FH9, zomwe zikutanthauza kuti CMC yokhala ndi kalasi yazakudya, mamasukidwe apamwamba komanso digirii yolowa m'malo ya 0.9.
Mtundu wa CMC ndi CM6, kutanthauza CMC ya kalasi ya ceramic, viscosity yapakatikati ndi digirii yolowa m'malo ya 0.6.
Momwemonso, palinso magiredi omwe amagwiritsidwa ntchito muzamankhwala, nsalu ndi mafakitale ena, omwe sapezeka kawirikawiri pakugwiritsa ntchito mafakitale a ceramic.
04. Miyezo Yosankha Makampani a Ceramic
1. Kukhazikika kwamakayendedwe
Ichi ndi chikhalidwe choyamba kusankha CMC kwa glaze
(1) Viscosity sisintha kwambiri nthawi iliyonse
(2) Viscosity sikusintha kwambiri ndi kutentha.
2. Small thixotropy
Kupanga matailosi onyezimira, glaze slurry sangakhale thixotropic, apo ayi zingakhudze mtundu wa glazed pamwamba, choncho ndi bwino kusankha CMC chakudya.Pofuna kuchepetsa ndalama, opanga ena amagwiritsa ntchito CMC yamakampani, ndipo mtundu wa glaze umakhudzidwa mosavuta.
3. Samalani njira yoyesera mamasukidwe akayendedwe
(1) CMC ndende ali ndi exponential ubale ndi mamasukidwe akayendedwe, choncho chidwi ayenera kulipidwa kulondola kwa masekeli;
(2) Samalani ndi kufanana kwa yankho la CMC.Okhwima mayeso njira ndi kusonkhezera yankho kwa 2 hours pamaso kuyeza mamasukidwe akayendedwe ake;
(3) Kutentha kumakhudza kwambiri mamasukidwe akayendedwe, choncho tcheru chiyenera kuperekedwa kwa kutentha kozungulira panthawi ya mayesero;
(4) Samalani kusungidwa kwa yankho la CMC kuti mupewe kuwonongeka kwake.
(5) Samalani kusiyana pakati pa viscosity ndi kusasinthasintha.
Nthawi yotumiza: Jan-05-2023