M'zaka zaposachedwapa, ndi kukhazikitsa pang'onopang'ono mfundo zoyenera zotsatirira lingaliro la chitukuko cha sayansi ndikumanga gulu lopulumutsa chuma, matope omangira dziko langa akukumana ndi kusintha kuchokera ku matope achikhalidwe kupita ku matope osakanikirana, ndipo makampani opanga matope osakanikirana ayamba kupanga mwachangu. Monga kusakaniza kofunikira kwambiri popanga zinthu zomangira matope osakanikirana, cellulose ether imagwira ntchito yofunika kwambiri pakuchita ndi mtengo wa matope osakanikirana. Pali mitundu iwiri ya ma cellulose ethers: imodzi ndi ionic, monga sodium carboxymethyl cellulose (CMC), ndipo inayo ndi yosakhala ionic, monga methyl cellulose (MC), hydroxyethyl cellulose (HEC), Hydroxypropyl cellulose (HPMC), ndi zina zotero. Pakadali pano, zinthu zambiri za ether za cellulose padziko lonse lapansi zimagwiritsidwa ntchito popanga zinthu zomangira. Ndi chitukuko chachangu cha makampani opanga matope osakanikirana, cellulose ether ya dziko langa yafika pachimake, ndipo mkhalidwe wa zinthu zakunja zomwe zikulamulira msika wasweka. Popeza kugwiritsa ntchito zinthu zopangidwa ndi matope osakaniza ndi madzi kukuchulukirachulukira, dziko langa lidzakhala lopanga zinthu zambiri padziko lonse lapansi zopangidwa ndi matope osakaniza ndi madzi, kugwiritsa ntchito ether ya cellulose kudzawonjezeka, ndipo opanga ake ndi mitundu ya zinthu zidzawonjezekanso. Kugwira ntchito kwa ether ya cellulose mu matope osakaniza ndi madzi kwakhala chinthu chofunikira kwambiri kwa opanga ndi ogwiritsa ntchito.
Chinthu chofunika kwambiri cha cellulose ether ndi kusunga madzi m'zida zomangira. Popanda kuwonjezera cellulose ether, wosanjikiza woonda wa matope atsopano umauma mofulumira kwambiri kotero kuti simenti singathe kusungunuka bwino ndipo matopewo sangaume bwino. Nthawi yomweyo, kuwonjezera cellulose ether kumapangitsa kuti matopewo akhale ndi pulasitiki wabwino komanso kusinthasintha, komanso kumawonjezera mphamvu yolumikizira matopewo. Tiyeni tikambirane za momwe matope osakanikirana ndi owuma amagwirira ntchito pogwiritsa ntchito cellulose ether.
1. Kusalala kwa efa ya cellulose
Kusalala kwa ether ya cellulose kumakhudza kusungunuka kwake. Mwachitsanzo, kusalala kwa ether ya cellulose kukachepa, kumasungunuka mwachangu m'madzi komanso kumawonjezera magwiridwe antchito osungira madzi. Chifukwa chake, kusalala kwa ether ya cellulose kuyenera kuphatikizidwa ngati chimodzi mwa zinthu zake zofufuzira. Kawirikawiri, zotsalira za sieve za kusalala kwa ether ya cellulose zopitirira 0.212mm siziyenera kupitirira 8.0%.
2. Kuuma kwa kulemera kwa thupi
Kuchepetsa kulemera kwa zinthu zouma kumatanthauza kuchuluka kwa kulemera kwa zinthu zomwe zatayika mu unyinji wa chitsanzo choyambirira pamene cellulose ether yauma pa kutentha kwina. Pa mtundu wina wa cellulose ether, kuchuluka kwa kulemera kwa zinthu zouma kumakhala kwakukulu kwambiri, zomwe zimachepetsa kuchuluka kwa zosakaniza zomwe zili mu cellulose ether, zimakhudza momwe mabizinesi akumidzi amagwirira ntchito, ndikuwonjezera mtengo wogulira. Nthawi zambiri, kuchepa thupi pakauma cellulose ether sikupitirira 6.0%.
3. Sulfate phulusa lomwe lili mu cellulose ether
Pa mtundu winawake wa ether ya cellulose, kuchuluka kwa phulusa kumakhala kwakukulu kwambiri, zomwe zimachepetsa kuchuluka kwa zosakaniza zomwe zimagwira ntchito mu ether ya cellulose ndikukhudza momwe mabizinesi otsika mtengo amagwirira ntchito. Kuchuluka kwa phulusa la sulfate mu ether ya cellulose ndi muyeso wofunikira wa magwiridwe ake. Kuphatikiza ndi momwe opanga ether ya cellulose m'dziko langa alili, nthawi zambiri kuchuluka kwa phulusa la MC, HPMC, HEMC sikuyenera kupitirira 2.5%, ndipo kuchuluka kwa phulusa la ether ya cellulose ya HEC sikuyenera kupitirira 10.0%.
4. Kukhuthala kwa efa ya cellulose
Kusunga madzi ndi kukhuthala kwa etha ya cellulose kumadalira makamaka kukhuthala ndi mlingo wa etha ya cellulose yomwe imawonjezeredwa ku simenti.
5. pH ya etha ya cellulose
Kukhuthala kwa zinthu za cellulose ether kudzachepa pang'onopang'ono zitasungidwa kutentha kwambiri kapena kwa nthawi yayitali, makamaka pazinthu zokhala ndi kukhuthala kwakukulu, kotero ndikofunikira kuchepetsa pH. Nthawi zambiri, ndikofunikira kuwongolera pH ya cellulose ether kufika pa 5-9.
6. Kutumiza kwa efa ya cellulose kuwala
Kutumiza kuwala kwa cellulose ether kumakhudza mwachindunji momwe imagwiritsidwira ntchito mu zipangizo zomangira. Zinthu zazikulu zomwe zimakhudza kutumiza kuwala kwa cellulose ether ndi izi: (1) ubwino wa zipangizo zopangira; (2) zotsatira za alkaliization; (3) chiŵerengero cha njira; (4) chiŵerengero cha solvent; (5) zotsatira za neutralization.
Malinga ndi momwe ntchito ikuyendera, mphamvu ya kuwala kwa cellulose ether siyenera kukhala yochepera 80%.
7. Kutentha kwa gel kwa efa ya cellulose
Cellulose ether imagwiritsidwa ntchito makamaka ngati viscosifier, plasticizer ndi chosungira madzi mu zinthu za simenti, kotero kukhuthala ndi kutentha kwa gel ndi njira zofunika kwambiri zodziwira mtundu wa cellulose ether. Kutentha kwa gel kumagwiritsidwa ntchito kudziwa mtundu wa cellulose ether, womwe umagwirizana ndi kuchuluka kwa kusintha kwa cellulose ether. Kuphatikiza apo, mchere ndi zonyansa zimathanso kukhudza kutentha kwa gel. Kutentha kwa yankho kukakwera, cellulose polymer imataya madzi pang'onopang'ono, ndipo kukhuthala kwa yankho kumachepa. Pamene mfundo ya gel yafika, polima imasowa madzi okwanira ndipo imapanga gel. Chifukwa chake, mu zinthu za simenti, kutentha nthawi zambiri kumayendetsedwa pansi pa kutentha koyambirira kwa gel. Pansi pa izi, kutentha kukakhala kotsika, kukhuthala kumakhala kwakukulu, ndipo zotsatira za kukhuthala ndi kusunga madzi zimawonekera bwino.
Nthawi yotumizira: Feb-27-2023