Cellulose Ether (CE) ndi zinthu zosinthidwa za polima zomwe zimachokera ku cellulose yachilengedwe ndipo zimagwiritsidwa ntchito kwambiri pomanga, zokutira, mankhwala, zodzoladzola ndi zina. Pali mitundu yosiyanasiyana ya ma cellulose ethers, omwe amadziwika kuti hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC) ndi methylcellulose (MC). M'mapulogalamu osiyanasiyana, ma cellulose ethers awonetsa maubwino ofunikira pakukhazikika komanso magwiridwe antchito, kukhala gawo lofunikira pakuwongolera zinthu zabwino komanso moyo wautumiki.
1. Kupititsa patsogolo ntchito yomanga
Pazinthu zomangira, ma cellulose ethers amagwiritsidwa ntchito ngati thickeners, zosungira madzi ndi zomangira. Mumatope, gypsum ndi zipangizo zopangira simenti, mphamvu yowonjezereka ya cellulose ether imapangitsa kuti zinthuzo zikhale zamadzimadzi komanso pulasitiki panthawi yomanga, kupewa kutaya magazi komanso kulekanitsa. Cellulose ether imapangitsanso mphamvu yomangirira ya zinthuzo, kuonetsetsa kuti zinthuzo zikhoza kugawidwa mofanana pa ntchito yomanga ndikukhala ndi kumamatira bwino ku gawo lapansi.
Hydroxypropyl methylcellulose (HPMC) imatha kusintha kwambiri magwiridwe antchito a matope, kupangitsa kuti ikhale yosavuta kugwiritsa ntchito komanso kuti isagwere pansi, makamaka pakumanga koyima. Kuphatikiza apo, kuchepa kwa cellulose ether kumatha kukulitsa nthawi yogwiritsira ntchito matope, zomwe zimapindulitsa pakumanga bwino kwa ntchito zovuta. Zinthuzi zimapititsa patsogolo luso la zomangamanga komanso kuwongolera bwino pakuchepetsa zinyalala ndi zolakwika zomanga.
2. Kusunga madzi kwabwino kwambiri
Chimodzi mwazinthu zofunika kwambiri za cellulose ethers ndizomwe zimasunga bwino madzi. Kusungirako madzi kumatanthauza kuthekera kwa cellulose ether kuyamwa ndikusunga chinyezi muzinthuzo, kuteteza kutuluka msanga kapena kutuluka kwa chinyezi, potero kuonetsetsa mphamvu ndi kulimba kwa zinthuzo pambuyo pomanga. Muzinthu zomangira monga zopangira simenti ndi gypsum, mphamvu yosungira madzi ya cellulose ether imatsimikizira kuti madzi amatha kutenga nawo mbali pakuchitapo kanthu panthawi ya hydration reaction, kupewa kusweka kwa zinthu komanso mphamvu zosakwanira zomwe zimachitika chifukwa cha kutaya madzi msanga.
Makhalidwe osungira madzi ndi ofunikira kwambiri pomanga zopyapyala. Mwachitsanzo, pakupanga matayala, ma cellulose ethers amathandizira kuti chinyontho mumatope chisawonongeke msanga, potero kumathandizira kumamatira ndi kulimba kwa matailosi. Mofananamo, m'munda wa zokutira, ma cellulose ethers amatha kulepheretsa kutuluka msanga kwa chinyezi, kulola kuti chophimbacho chipange yunifolomu ndi wandiweyani pamwamba, kuwonjezera moyo wa zokutira ndi kuchepetsa kufunikira kokonzekera pambuyo pake.
3. Kupititsa patsogolo kukana kwa nyengo kwa zipangizo
Kugwiritsa ntchito ma cellulose ethers kumathanso kupangitsa kuti zinthu zisamayende bwino, mwachitsanzo, kukana kwake kuzinthu zachilengedwe monga chinyezi, kuwala kwa UV, nyengo ndi kutentha kwambiri. Izi ndizofunikira kuti zida zomangira zikhale zolimba kwa nthawi yayitali. Mwachitsanzo, kugwiritsa ntchito ma cellulose ethers mu zokutira kumatha kusintha mawonekedwe opangira filimu ndikuwonjezera kachulukidwe wa zokutira, potero kumathandizira kukana kwa ❖ kuyanika kwa ultraviolet ndikuletsa kufota ndi kukalamba.
Muzinthu zopangira simenti, ether ya cellulose imatha kusungitsa madzi, kuchepetsa kuyanika kwa shrinkage panthawi yowumitsa simenti, komanso kuchepetsa chiopsezo chosweka, potero kumathandizira kukana kuzizira komanso kukana kwanyengo. Izi zimathandiza kuti nyumbayo ikhalebe yokhazikika komanso yokongola kwa nthawi yayitali m'malo ovuta kwambiri.
4. Wabwino thickening ndi rheology kusintha
The thickening zotsatira za mapadi efa mu njira amadzimadzi zimathandiza kusintha rheological katundu wa zinthu (monga mamasukidwe akayendedwe, zokolola nkhawa, etc.), potero kuwongolera bata ndi chomasuka ntchito zakuthupi. Mu zokutira ndi utoto, ma cellulose ethers amasintha kukhuthala kwa utoto kuti asagwede kapena kudontha pakagwiritsidwa ntchito ndikupanga utoto wosalala, wosalala. Izi sizimangowonjezera kuwongolera kwa zomangamanga, komanso kumathandizira kwambiri kukana kuvala ndi kukana kwa ming'alu ya zokutira.
Ma cellulose ether amagwiranso ntchito yofunika kwambiri pakudzipangira zinthu zapansi. Kukhuthala kwake komanso kusintha kwa ma rheological kumatsimikizira kuti zinthuzo zimasunga madzi abwino komanso kudziwongolera panthawi yothira, kuchepetsa kubadwa kwa thovu ndi zolakwika, ndipo pamapeto pake kumapangitsa kuti pansi pakhale kukhazikika komanso kukhazikika kwapansi.
5. Limbikitsani kukana kwa zida
Kusungidwa kwa madzi ndi kukhuthala kwa cellulose ether kumathandizira kuwongolera kuthamanga kwazinthu ndikupewa kuchepa kwapang'onopang'ono ndi zovuta zong'ambika zomwe zimayambitsidwa ndi kutayika kwakukulu kwa chinyezi. Makamaka mumatope ndi zida zopangira simenti, cellulose ether imatha kufalitsa chinyezi m'zinthuzo ndikuchepetsa kuphulika kwa ming'alu. Kuphatikiza apo, mawonekedwe ake omangika bwino amathandizanso kuti zinthuzo zizigwirizana bwino ndi gawo lapansi ndikuwonjezera kukana kwa ming'alu yonse.
Muzinthu zopangidwa ndi gypsum, ma cellulose ethers amalepheretsa ming'alu ya pamwamba yomwe imayambitsidwa ndi kutayika kwa madzi mofulumira, kumapangitsa kuti zokutira zapakhoma ndi denga zikhale zokhazikika komanso zosalala panthawi yowumitsa. Kukana ming'alu kumeneku sikumangowonjezera maonekedwe a zinthuzo, komanso kumawonjezera moyo wake wautumiki.
6. Kupititsa patsogolo kukana kwa dzimbiri ndi kukana kwa mankhwala
Ma cellulose ether amathanso kukonza dzimbiri ndi kukana kwa mankhwala pazinthu zina. Popanga zinthu zolimba komanso zosagwira madzi, ma cellulose ether amatha kuchepetsa kuukira kwa mankhwala owopsa kapena chinyezi pa zinthuzo. Izi ndizofunika kwambiri m'malo ena apadera, monga zomera za mankhwala, malo a m'nyanja kapena malo omwe ali ndi chinyezi chambiri.
Kugwiritsiridwa ntchito kwa ma cellulose ethers mu zokutira zopanda madzi sikungowonjezera kulimba kwa ❖ kuyanika, komanso kumawonjezera kukana kwa mankhwala monga ma acid, alkalis, ndi mchere, potero kumawonjezera moyo wautumiki wa zinthuzo ndi kuchepetsa mtengo wa kukonza ndi kubwezeretsa.
7. Chitetezo cha chilengedwe chobiriwira ndi chitukuko chokhazikika
Cellulose ether ndi chinthu chobiriwira komanso chogwirizana ndi chilengedwe chifukwa chimachokera ku cellulose yachilengedwe ndipo imatha kuwonongeka. Poyerekeza ndi zinthu zopangidwa ndi polima, ma cellulose ethers samakhudza kwambiri chilengedwe ndipo samatulutsa zinthu zovulaza panthawi yopanga. Choncho, kugwiritsidwa ntchito kwakukulu kwa ma cellulose ethers kumakwaniritsa zofunikira zamakono zachitetezo cha chilengedwe ndi chitukuko chokhazikika pamakampani omangamanga.
Ubwino wa ma cellulose ethers pokhazikika komanso magwiridwe antchito amawonetsedwa makamaka pakusunga kwawo bwino madzi, kukhuthala, kumamatira komanso kukana nyengo. Sikuti zimangowonjezera ntchito yomanga ya zida zomangira, komanso zimathandizira kwambiri kukana kwa ming'alu ya zinthuzo, kukhazikika komanso kukana dzimbiri, ndikuwonjezera moyo wautumiki wazinthuzo. Kuonjezera apo, zinthu zobiriwira komanso zachilengedwe za cellulose ether zimapanganso gawo lofunika kwambiri pa chitukuko cha zipangizo zomangira zamtsogolo.
Nthawi yotumiza: Sep-18-2024