Cellulose ether ndi nyumba yofunika yowonjezera, yogwiritsidwa ntchito kwambiri pakumanga matope, putty ufa, zokutira ndi zinthu zina kuti zithandizire zinthu zakuthupi. Zigawo zikuluzikulu za cellulose ether mawonekedwe ndi ma cellulose omwe amayambitsidwa ndi kusintha kwa mankhwala, komwe kumapangitsa kusungunuka kwapadera, kukupatsani kukula kwapadera, kusungunuka, kusungunuka kwamadzi komanso kuchuluka kwa madzi.
1. Kapangidwe ka cellulose
Cellulose ndi imodzi mwamiyuni yofala kwambiri zachilengedwe, makamaka kuchokera ku ulusi wazomera. Ndi gawo la core la cellulose ether ndipo limafotokoza kapangidwe kake ndi katundu. Cellulose mamolekyu amapangidwa ndi mayunitsi a glucose olumikizidwa ndi β-1,4-glycosiidic kuti apange kapangidwe kawiri. Kapangidwe kameneka kamapatsa cellulose yayikulu komanso kulemera kwambiri, koma kusungunuka kwake m'madzi ndi osauka. Pofuna kusintha madzi kusungunuka kwamadzi a cellulose ndikusintha zofunikira zomangira, cellulose ayenera kusinthidwa mwanjira.
2. Magawo ofunikira-zigawo zoyeserera
Malo apadera a ma cellulose ether amapezeka makamaka ndi magawo oyambira omwe ayambitsidwa ndi gulu la hydroxyl (-Oh) la cellulose ndi ma ether. Mitundu yofananira imaphatikizapo methoxy (-och₃), ethoxy (-Ch₂h₅) ndi hydroxypropyl (-ch₂chohypy). Kukhazikitsidwa kwa awa m'malo amasintha kusungunuka, kusungunuka ndi madzi kusungunuka kwa cellulose. Malinga ndi osiyanasiyana oyambitsidwa, cellulose eders imatha kugawidwa mu methyl cellulose (MC), hydroxethyl celloull (hpmroxypropyl) cellulose (hpmc) ndi mitundu ina.
Methyl cellulose (Mc): Methyl cellulose imapangidwa poyambitsa methyl magantituretures (-Och₃) m'magulu a hydroxyl mu celluluse molekyulu. Cellulose iyi ether ili ndi madzi abwino osungunuka ndi madzi ndipo imagwiritsidwa ntchito kwambiri pamatope owuma, zomata ndi zokutira. MC ili ndi madzi abwino kwambiri komanso amathandizira kuchepetsa kutayika kwa madzi m'matoto omanga, ndikuonetsetsa kuti azitsamba ndi mphamvu matope ndi ufa.
Hydroxyethyl cellulose (hec): hydroxethyl cellulose imapangidwa ndi kukhazikitsidwa hydroxyethyl osungunuka (- yomwe imapangitsa kuti ikhale yosungunuka), yopanda mchere. Hec imagwiritsidwa ntchito polankhula zozikidwa pamadzi, utoto wa laterx komanso zowonjezera zowonjezera. Ili ndi katundu wabwino kwambiri komanso wopanga mafilimu ndipo amatha kusintha zinthu zomanga.
Hydroxypropyll methylcellulose (hpmc): hydroxypropyll methylcellulose imapangidwa ndi gawo limodzi munthawi yomweyo la hydroxypropyl (-ch₂chochyppyl. Mitundu iyi ya ethel ethel ellulose ikonza madzi ambiri madzi, mkaka ndi kuthekera kwa zinthu zomangira monga matope owuma, ndi khoma la matabwa, ndi khoma la khothi lamilandu. HPMC imakhalanso ndi kutentha kwabwino komanso kukana chisanu, kuti ithe kukonza bwino makonzedwe omanga mikhalidwe yovuta kwambiri.
3. Madzi osungunuka ndi kukula
Kusungunuka kwamadzi kwa cellulose etheluluse kumatengera mtundu ndi digiri yazolowa m'malo a mpweya wapansi (ie, kuchuluka kwa magulu a hlucocyl iliyonse). Mayeso oyenera olowa m'malo amathandizira ma cellulose mamolekyulu kuti apange njira yosinthira m'madzi, kupereka zinthu zabwino. Pomanga zida, cellulose etars monga otsatsa amatha kuwonjezera matope a matope, kupewa stratization ndi tsankho, kenako ndikuwongolera ntchito zomanga.
4. Kusungidwa kwamadzi
Kusunga kwamadzi kwa ethel ethel ndikofunikira mu mtundu wa zomangamanga. Mapangidwe monga matope ndi ufa, cellulose ether imatha kupanga filimu yamadzi yodzaza pamtunda kuti muchepetse madzi mwachangu, potero ndikutha nthawi ndi kusinthika kwa zinthuzo. Izi zimagwira ntchito yofunika kwambiri pokonza mphamvu komanso kupewa kusokonekera.
5. Rhelogy ndi Zomangamanga
Kuphatikiza kwa ma cellulose ether kumathandiza kwambiri za zinthu zomangira, ndiye kuti, machitidwe oyenda ndi kusokonekera kwa zida pansi pa mphamvu zakunja. Zimatha kusintha madzi osungira ndi mafuta, kuwonjezera zopera komanso zosavuta pomanga zida. Munjira yomangayi monga kupopera mbewu mankhwalawa, kusaka ndi zomangamanga, cellulose ether imathandizira kuchepetsa kugwiritsa ntchito bwino komanso kukonza luso, pomwe mukuwonetsetsa yugi yolumikizira.
6. Kugwirizana ndi Kuteteza Zachilengedwe
Ma cellulose ether ali ndi mgwirizano wabwino ndi zinthu zosiyanasiyana zomanga, kuphatikizapo simenti, gypsum, laimu, ndi zina mwazinthu zina zomangira kuti zitsimikizike. Kuphatikiza apo, ma cellulose ether ndi owonjezera obiriwira komanso achilengedwe, omwe amachokera ku ulusi wachilengedwe, womwe umakhala ndi ziphuphu zachilengedwe, sizivulaza chilengedwe, ndikukumana ndi chitetezo chachilengedwe cha zinthu zamakono zomangira zamakono.
7. Zosakaniza zina zosinthidwa
Pofuna kukonzanso magwiridwe antchito a cellulose, zosakaniza zina zosinthidwa zitha kukhazikitsidwa pakupanga zenizeni. Mwachitsanzo, opanga ena amalimbikitsa madzi ndikukaniza nyengo ya cellulose pophatikiza ndi silicone, parafini ndi zinthu zina. Kuphatikiza kwa zosakaniza zosinthidwazi nthawi zambiri kumakwaniritsa zofunikira zina, monga kuwonjezera kwa zakuthupi zam'manja za khoma la khoma kapena mapheteriter.
Monga gawo lofunikira pakumanga, cellulose ether imakhala ndi zida zambiri, kuphatikizapo, kusungidwa kwamadzi, komanso zowongolera zanyengo. Zigawo zake zazikulu ndi ma cellulose oyambira ndipo miniti oyambitsidwa ndi njira yodziwitsa. Mitundu yosiyanasiyana ya cellose yosiyanasiyana imakhala ndi mapulogalamu osiyanasiyana komanso magwiridwe antchito pomanga zida chifukwa cha kusiyana pakati pawo. Cellulose eya siingathe kusintha magwiridwe antchito, komanso kusintha nyumba zonse zanyumba. Chifukwa chake, cellulose eders ali ndi chiyembekezo chothandiza pantchito yamakono.
Post Nthawi: Sep-18-2024