Popanga zida zomangira, makamaka matope a ufa wowuma,cellulose etherimagwira ntchito yofunika kwambiri, makamaka popanga matope apadera (matope osinthidwa), ndi gawo lofunikira. Ntchito yofunikira ya cellulose ether yosungunuka m'madzi mumatope ndi mphamvu yake yabwino yosungira madzi. Mphamvu yosungira madzi ya cellulose ether imadalira kuyamwa kwamadzi kwa gawo loyambira, kapangidwe ka matope, makulidwe a matope, kuchuluka kwa madzi kwa matope, komanso nthawi yoyika zinthu.
Zomangamanga zambiri ndi pulasitala matope sasunga madzi bwino, ndipo madzi ndi slurry zimalekanitsidwa pakangotha mphindi zochepa. Kusungirako madzi ndi ntchito yofunikira ya methyl cellulose ether, komanso ndikuchitanso komwe opanga matope ambiri am'nyumba, makamaka omwe ali kumadera akum'mwera komwe kumatentha kwambiri, amalabadira. Zinthu zomwe zimakhudza momwe madzi amasungiramo matope owuma a ufa akuphatikizapo kuchuluka kwa kuwonjezera, mamasukidwe akayendedwe, fineness wa particles, ndi kutentha kwa chilengedwe ntchito.
Kusunga madzi kwacellulose etherpalokha imachokera ku kusungunuka ndi kutaya madzi m'thupi kwa cellulose ether yokha. Monga ife tonse tikudziwa, ngakhale cellulose maselo unyolo muli ambiri hydratable OH magulu kwambiri hydratable, si sungunuka m'madzi, chifukwa mapadi kapangidwe ndi mkulu digiri crystallinity. Mphamvu ya hydration yamagulu a hydroxyl yokha sikokwanira kuphimba zomangira zamphamvu za haidrojeni ndi mphamvu za van der Waals pakati pa mamolekyu. Choncho, zimangotupa koma sizisungunuka m'madzi. Pamene cholowa m'malo anadzetsa mu unyolo maselo, osati m'malo kuwononga unyolo wa haidrojeni, komanso interchain wa haidrojeni chomangira anawonongedwa chifukwa wedging wa m'malo pakati moyandikana unyolo. Cholowa m'malo chimakhala chachikulu, ndiye kuti mtunda pakati pa mamolekyu ndi waukulu. Kuchuluka kwa mtunda. Zotsatira zazikulu za kuwononga zomangira za haidrojeni, cellulose ether imakhala yosungunuka m'madzi pambuyo poti latisi ya cellulose ikuchulukira ndipo yankho limalowa, ndikupanga yankho lapamwamba kwambiri. Kutentha kukakwera, hydration ya polima imafooka, ndipo madzi pakati pa maunyolo amathamangitsidwa. Pamene kuchepa madzi m'thupi zotsatira zokwanira, mamolekyu amayamba aggregate, kupanga atatu azithunzithunzi maukonde dongosolo gel osakaniza ndi apangidwe kunja.
Nthawi zambiri, kukwezeka kwa mamachulukidwe kumapangitsa kuti madzi asungidwe bwino. Komabe, kukwezeka kwa mamasukidwe apamwamba komanso kulemera kwa maselo, kuchepa kofananirako kusungunuka kwake kudzakhala ndi zotsatira zoyipa pa mphamvu ndi ntchito yomanga ya matope. The apamwamba mamasukidwe akayendedwe, ndi zoonekeratu kwambiri thickening zotsatira pa matope, koma si mwachindunji molingana. Kukwera kwa mamasukidwe akayendedwe, m'pamenenso matope onyowa amakhala owoneka bwino kwambiri, ndiye kuti, pakumanga, amawonetsedwa ngati kumamatira ku scraper ndi kumamatira kwakukulu ku gawo lapansi. Koma sizothandiza kuwonjezera mphamvu zamapangidwe a dothi lonyowa palokha. Pakumanga, ntchito yotsutsa-sag sizowonekera. M'malo mwake, ena apakati ndi otsika mamasukidwe akayendedwe koma kusinthidwa methylma cellulose ethersali ndi magwiridwe antchito abwino kwambiri pakuwongolera mphamvu zamapangidwe amatope onyowa.
Nthawi yotumiza: Apr-25-2024