M'matope osakanizika, osakanizika, kuchuluka kwa ethel ether ether ether ali wotsika kwambiri, koma kumatha kusintha kwambiri matope onyowa, ndipo ndi chowonjezera chomwe chimakhudza matope omanga. Kusankhidwa koyenera kwa cellulose kukhala ndi mitundu yosiyanasiyana, ma viscosies osiyanasiyana, kukula kwa tinthu tating'onoting'ono, madigiri osiyanasiyana owonjezeredwa ndikuthandizira kusintha kwa matope a ufa wa ufa.
Pakadali pano, matope ambiri ndi matope okhala ndi magwiridwe antchito osavomerezeka, ndipo madziwo amalekanitsa atangoimirira. Kusungidwa kwamadzi ndikofunikira pakugwiritsa ntchito methyl cellulose ether ether, ndipo ndi ntchito yomwe ambiri amawuma opanga matope, makamaka iwo akumwera kum'mwera ndi kutentha kwakukulu, samalani. Zinthu zomwe zikukhudza madzi osungira madzi osakaniza zimaphatikizapo kuchuluka kwa MC
1. Lingaliro
Cellulose ether ndi polymer yopanga policle yopangidwa kuchokera ku cellulose yachilengedwe kudzera mu kusintha mankhwala. Cellulose ether ndi zochokera ku cellulose yachilengedwe. Kupanga kwa cellulose ether ndi kosiyana ndi opanga ma polima. Zida zake zoyambirira ndizopenchera, kuphatikiza kwachilengedwe kwa polymer. Chifukwa cha kuchuluka kwa kapangidwe ka cellulose, cellulose yomwe ilibe mphamvu yokhudzana ndi othandizira. Komabe, pambuyo pa mankhwalawa a wothandizira wazotupa, maunyolo a hydrogen pakati pa unyolo wazomwe unyolowo ndi maunyolowo adawonongedwa, ndipo kutulutsidwa kwa Hydroxyyl kumakhala kwa cellulose ya alkali. Pezani ether ether.
Mphamvu za cellulose eder zimatengera mtundu, chiwerengero ndi kufalitsa m'malo opezekapo. Kugawika kwa cellulose kumachitikanso pamtundu wa mipweya yambiri, digiri ya kukongoletsa, kusungunuka komanso ntchito zokhudzana ndi ntchito. Malinga ndi mtundu wa magalamure pa ma molecular cheni, imatha kugawidwa mu monoether ndi osakaniza. Nthawi zambiri timagwiritsa ntchito MC ngati monoether, ndi pmc ngati ether. Methyl cellulose ether mc ndiye chinthucho pambuyo pa gulu la hlucoxyl pagawo la glucose la cellulose ya chilala chagawidwa ndi gulu la methoxy. Ndi chinthu chomwe chimapangidwa ndi gawo la gulu la hydroxyl pa unit ndi gulu lina la methoxy ndi gawo lina lokhala ndi gulu la hydroxypyl. Njira yoyesererayo ili [CE) (O) 3-MN) M [THE) T] Th3] Ah vhdroxyethyl exerose exula.
Potengera kusungunuka, imatha kugawidwa mu ionic komanso yosakhala ionic. Madzi osungunuka amadzi osakhala a celluse a ionic amakhala ndi mndandanda wa ma alkyl angapo a ma alkyl, ndi hydroxyalkyl et. Ionic CMC imagwiritsidwa ntchito makamaka popanga zotupa, kusindikiza mwadongosolo ndi kupanikizika ndi kufufuza kwamafuta. Opanda MC, PMC, hemc, ndi zina zambiri zomangira, zokutira zamasiku a latax, zokhala ndi madzi osungirako, okhazikika, omwe amawapatsa.
2. Kusunga kwamadzi kwa ether
Kusunga kwamadzi kwa ethel ether: Popanga ziphato zomangira, makamaka ether ether ether, celluluse ether element upangiri wosasinthika, makamaka popanga matope apadera (matope osinthika), chofunikira komanso chofunikira.
Udindo wofunikira wa sungunuka wamadzi wosungunulira wamadzi mu matope makamaka ali ndi magawo atatu, imodzi ndi njira yabwino yopezera ndalama, inayo ndiye chidwi cha matope ndi simenti. Madzi osunga ma cellulose ethel ether amatengera madzi ophatikizika, kapangidwe ka matope, makulidwe a matope, kufunidwa kwamadzi kwa matope. Kusunga kwamadzi kwa maselo a cellulose kumachokera ku sulubility ndi madzinjeme a cellulose e okha. Monga tonse tikudziwa, ngakhale kuti ma cellulose a cellulose amakhala ndi mitundu yambiri yamagulu ambiri, samasungunuka m'madzi, chifukwa mawonekedwe a cellulose ali ndi crystality wamkulu.
Kutha kwa ma hydrobyl kwa magulu a hydroxyl sikukwanira kuphimba maukonde olimba ndi van Der Waals pakati pa mamolekyulu. Chifukwa chake, zimangotupa koma sizisungunuka m'madzi. Pamene gawo lazolowera limayambitsidwa mu mawonekedwe a ma molecular, osati gawo lokhalo lomwe limawononga unyolo wa hydrogen, komanso mgwirizano wa hydchain umawonongedwa chifukwa cha ukwati wapafupi ndi maunyolo oyandikana nawo. Kukula m'malo mwake, kwakukulu pakati pa mamolekyulu. Chachikulu mtunda. Zotsatira zazikulu zakuwononga magwiridwe antchito a hydrogen, ma cellulose amasungunuka osungunuka madzi pachipindachi atayamba kukula ndi yankho lolowa, ndikupanga yankho lalitali. Kutentha kukakwera, hydration kwa polima kumachepetsa, ndipo madzi pakati pa maunyolo amachotsedwa kunja. Mphamvu zokwanira zikakhala zokwanira, mamolekyulu amayamba kuphatikizika, ndikupanga mawonekedwe atatu a gel osakaniza ndikupindidwa. Zinthu zomwe zikukhudza madzi osungira matope zimaphatikizapo mamasukidwe a cellulose, kuchuluka komwe kumawonjezera, kukoma kwa tinthu ndi kutentha kwa ma tinthu.
Kuunika kwa cellulose ether ether, yabwinobwino. Mawonekedwe ndi gawo lofunikira la MC. Pakadali pano, opanga osiyanasiyana a MC amagwiritsa ntchito njira zosiyanasiyana zoyezera mafayilo a MC. Njira zazikuluzi zimadana ndi Rotovisko, Huspler, Ulonda wa Ulonda ndi Brookfield. Pazinthu zomwezo, chidwi cha mafayilo omwe chimayesedwa ndi njira zosiyanasiyana ndizosiyana kwambiri, ndipo ena amakhala ndi kusiyana pang'ono. Chifukwa chake, poyerekeza mawonekedwe, ziyenera kuchitika pakati pa njira zomwezi, kuphatikizapo kutentha, rotor, etc.
Nthawi zambiri, mafakiti apamwamba, abwinobwino amadzisungira madzi. Komabe, mafayilo apamwamba komanso okwera kwambiri olemera a MC, kutsika kolingana mu kusungunuka kwake kumabweretsa zovuta pa mphamvu ndi matope omanga matope. Maonekedwe ake, zoonekeratu kuti zimakula kwambiri patavala matope, koma siyofanana mwachindunji. Matope owoneka bwino, ndiye kuti, pomanga, amawonetsedwa ngati kumamatira ku starpiper ndi kutsatira kwakukulu kwa gawo lapansi. Koma sizothandiza kukulitsa mphamvu ya matonthozo onyowa. Pakumanga, magwiridwe antchito a Anti-Anti-sag sizachidziwikire. M'malo mwake, sing'anga zina zapakati komanso zochepa koma kusinthidwa methyl cellose celluse kukhala ndi ntchito yabwino kwambiri pokonzanso mphamvu ya matope onyowa.
Kuchuluka kwa cellulose ether ether wowonjezera matope, kukonzanso magwiridwe antchito, komanso kuwoneka bwino, zabwino zomwe zimasungidwa bwino.
Ponena za tinthu tating'onoting'ono, ndimalimbikitsa tinthu tating'onoting'ono, kusungirako kwamadzi. Zitafika zambiri za ma cellulose ether ether amalumikizana ndi madzi, malowo amasungunuka ndipo amapanga gel kuti mukulungitse mamolekyulu amadzi kuti asalowe pansi. Nthawi zina sizingafanane mosiyanasiyana ndikusungunuka ngakhale poyambitsa kwa nthawi yayitali, ndikupanga njira yopingasa kapena yovuta. Imakhudza kwambiri kusungira kwamadzi kwa maselo a cellulose, ndipo solobose ndi imodzi mwazinthu zomwe zimasankha cellulose ether ether ether ether.
Ubwino ndi mndandanda wofunikira wa methyl cellulose ether. MC yogwiritsa ntchito matope a ufa imafunikira kuti ikhale ufa, wokhala ndi madzi ochepa, ndipo zabwino zimafunikiranso 20% ~ 60% ya kukula kwa tinthu tochepa 63um. Ubwino umakhudza kusungunuka kwa methyl cellulose ether. Coarsing MC nthawi zambiri amakhala granular, ndipo ndikosavuta kusungunuka m'madzi popanda kuphatikizika, koma kuchuluka kwa chilengedwe ndiodekha kwambiri, kotero sioyenera kugwiritsa ntchito matope a ufa wa ufa. Mu matope a ufa wa ufa, MC imabalalitsidwa pakati pa zida zophatikizira monga kuphatikizika, fillet yabwino kwambiri ndi simenti, ndipo ufa wokwanira umatha kupewa methyl celluuse posakanikirana ndi madzi. MC ikawonjezeredwa ndi madzi kuti isungunuke, ndizovuta kwambiri kufalitsa ndikusungunuka.
Kuchita bwino kwa MC sikungowononga kokha, komanso kumachepetsa mphamvu zakomweko kwa matope. Pamene matope owuma a ufa amaziika pamalo akuluakulu, liwiro la matope owuma a ufa lidzachepetsedwa kwambiri, ndipo ming'alu imawoneka chifukwa cha nthawi zosiyanasiyana. Chifukwa cha matope owombera ndi ntchito yomanga makina, kufunikira kwa kukoma bwino kumakhala kokwera chifukwa cha nthawi yofupikira. Chisangalalo cha MCnso chimakhudzanso madzi ake. Nthawi zambiri, pa cellose cellulose etchese yofananira koma njira zosiyanasiyana, pansi pa zowonjezera zomwezo, Fluder the ndulu yabwino yosungirako madzi.
Kusunga kwamadzi kwa MC kumakhudzananso ndi kutentha komwe kumagwiritsidwa ntchito, ndipo madzi osungira madzi a methyl cellulose ethel ethel cellulose ether amachepetsa ndi kuchuluka kwa kutentha. Komabe, pamalingaliro enieni, matope owuma nthawi zambiri amagwiritsidwa ntchito kutentha kwambiri (madigiri 40) m'malo ambiri, omwe nthawi zambiri amathandizira kuchiritsa sitavala matope a ufa wa ufa. Kuchepa kwa kuchuluka kwa madzi kumadzetsa kumverera kowonekeratu kuti kugwirira ntchito komanso kusokonekera komwe kumakhudzidwa, ndipo ndizosavuta kuti muchepetse zinthu za kutentha pansi pa izi.
Ngakhale methyl hydrothyl cellulose embil owonjezera pano akuwonekera pamaso paukadaulo, kudalira kwawo kumapangitsabe kufooketsa matope a ufa wa ufa. Ngakhale kuchuluka kwa methyl hydrothyl cellulose kumachulukitsa (chiilimwe cha chilimwe), kugwirira ntchito komanso kusokonekera komanso kusokoneza zosowa zomwe mungagwiritse ntchito. Mwa chithandizo china chapadera pa MC, monga kuwonjezera kuchuluka kwa chikondwerero, etc.
Post Nthawi: Mar-04-2023