Monga chophatikizira chofunikira kwambiri pakumanga zinthu zamatope owuma, ether ya cellulose imakhala ndi gawo lalikulu pakuchita komanso mtengo wamatope osakanikirana. Pali mitundu iwiri ya ma cellulose ethers: imodzi ndi ayoni, monga sodium carboxymethyl cellulose (CMC), ndipo ina si ionic, monga methyl cellulose (MC), hydroxyethyl cellulose (HEC), Hydroxypropyl cellulose (HPMC), etc. . Ndi kutchuka kowonjezereka kwa kugwiritsira ntchito mankhwala osakaniza owuma, dziko langa lidzakhala dziko lalikulu kwambiri padziko lonse lapansi la matope osakaniza owuma, kugwiritsidwa ntchito kwa cellulose ether kudzawonjezeka, ndipo opanga ake ndi mitundu ya mankhwala idzawonjezeka. Kuchita kwa mankhwala a cellulose ether mumatope osakaniza owuma kwakhala chidwi cha opanga ndi ogwiritsa ntchito.
Chinthu chofunika kwambiri cha cellulose ether ndicho kusunga madzi mu zipangizo zomangira. Popanda kuwonjezeredwa kwa cellulose ether, matope opyapyala amatope amauma mofulumira kotero kuti simentiyo sichitha kuthira madzi mwachibadwa ndipo matope sangathe kuumitsa ndi kukwaniritsa mgwirizano wabwino. Panthawi imodzimodziyo, kuwonjezera kwa cellulose ether kumapangitsa kuti matope akhale ndi pulasitiki yabwino komanso kusinthasintha, komanso kumapangitsa kuti matope agwirizane bwino. Tiyeni tikambirane za mmene ntchito ya matope osakaniza youma kuchokera ku ntchito ya cellulose ether.
1. Ubwino wa cellulose
Ubwino wa cellulose ether umakhudza kusungunuka kwake. Mwachitsanzo, kutsika kwabwino kwa cellulose ether, kumasungunuka mwachangu m'madzi ndikuwongolera kasungidwe kamadzi. Choncho, ubwino wa cellulose ether uyenera kuphatikizidwa ngati imodzi mwazofufuza zake. Nthawi zambiri, sieve yotsalira ya cellulose ether fineness yopitilira 0.212mm sayenera kupitirira 8.0%.
2. Kuyanika kuchuluka kwa kuwonda
Kuwumitsa kuwonda kumatanthawuza kuchuluka kwa kuchuluka kwa zinthu zomwe zatayika muunyinji wa zitsanzo zoyambirira pamene cellulose ether imawuma pa kutentha kwina. Pakuti ena khalidwe la mapadi efa, kuyanika kuwonda mlingo ndi mkulu kwambiri, amene kuchepetsa zili zosakaniza yogwira mu mapadi efa, zimakhudza ntchito zotsatira za mabizinezi kumtunda, ndi kuonjezera mtengo wogula. Kawirikawiri, kuwonda pa kuyanika mapadi ether si oposa 6.0%.
3. Phulusa la sulphate lili mu cellulose ether
Kwa mtundu wina wa cellulose ether, zomwe zili phulusa ndizokwera kwambiri, zomwe zingachepetse zomwe zimagwira ntchito mu cellulose ether ndikukhudza momwe mabizinesi akumunsi amagwirira ntchito. Phulusa la sulphate la cellulose ether ndilofunika kwambiri pakuchita kwake. Kuphatikizidwa ndi zomwe zilipo panopa kupanga dziko langa alipo opanga mapadi etere, kawirikawiri phulusa zili MC, HPMC, HEMC sayenera upambana 2.5%, ndi phulusa zili HEC mapadi efa sayenera upambana 10.0%.
4. Viscosity ya cellulose ether
Kusungidwa kwa madzi ndi kukhuthala kwa cellulose ether makamaka kumadalira mamasukidwe akayendedwe ndi mlingo wa cellulose etha womwewo womwe umawonjezeredwa ku slurry ya simenti.
5. Mtengo wa pH wa cellulose ether
Kukhuthala kwa zinthu za cellulose ether kudzachepa pang'onopang'ono pambuyo posungidwa kutentha kwambiri kapena kwa nthawi yayitali, makamaka pazinthu zowoneka bwino kwambiri, chifukwa chake ndikofunikira kuchepetsa pH. Nthawi zambiri, ndikofunikira kuwongolera kuchuluka kwa pH ya ether ya cellulose mpaka 5-9.
6. Kuwala kwa cellulose ether
Kuwala kwa cellulose ether kumakhudza mwachindunji ntchito yake muzomangamanga. Zinthu zazikulu zomwe zimakhudza kuwala kwa cellulose ether ndi: (1) ubwino wa zipangizo; (2) zotsatira za alkalization; (3) chiŵerengero cha ndondomeko; (4) chiŵerengero cha zosungunulira; (5) neutralization zotsatira. Malinga ndi zotsatira zogwiritsira ntchito, kuwala kwa cellulose ether kuyenera kukhala kosachepera 80%.
7. Kutentha kwa gel osakaniza a cellulose ether
Ma cellulose ether amagwiritsidwa ntchito makamaka ngati viscosifier, plasticizer ndi posungira madzi muzinthu za simenti, kotero mamasukidwe akayendedwe ndi kutentha kwa gel ndi njira zofunika kuwonetsa mtundu wa cellulose ether. Kutentha kwa gel osakaniza kumagwiritsidwa ntchito kudziwa mtundu wa cellulose ether, womwe umagwirizana ndi kuchuluka kwa m'malo mwa ma cellulose ethers. Kuonjezera apo, mchere ndi zonyansa zingakhudzenso kutentha kwa gel osakaniza. Pamene kutentha kwa yankho kumawuka, cellulose polima pang'onopang'ono amataya madzi, ndipo kukhuthala kwa yankho kumachepa. Pamene mfundo ya gel ifika, polima imakhala yopanda madzi ndipo imapanga gel. Choncho, muzinthu za simenti, kutentha kumayendetsedwa pansi pa kutentha koyambirira kwa gel. Pansi pa chikhalidwe ichi, kutentha kutsika, kumapangitsanso kukhuthala kwamphamvu, komanso zoonekeratu zotsatira za thickening ndi kusunga madzi.
Nthawi yotumiza: Apr-12-2023