Hydroxyethyl cellulose (hec) ndi polymer pormer pormer yomwe mawonekedwe awo amasinthidwa kuchokera ku cellulose kudzera mu hydrothithych. Hec ali ndi madzi osungunuka bwino, akukula, kuyimitsa, emulsifying, obalalika ndikupanga mafilimu, motero amagwiritsidwa ntchito pomanga, ndimankhwala tsiku lililonse. M'masamba opukusira mphira wothira madzi osiyidwa ndi mafayilo osasunthika, kuyambitsa hydroxethyl cellulose kumatha kusintha kwake kutentha kwake.
1. Basic katundu wa hydroxyethyl mapadi
Hydroxyenulose ali ndi mphamvu zogwira bwino ntchito komanso zopanga filimu m'madzi, zimapangitsa kuti ikhale yotsitsimutsa bwino chifukwa cha zoyankhulira zosiyanasiyana zamadzi. Imawonjezera chidwi cha utoto wa utoto popanga ma bondo a hydrogen ndi mamolekyulu amadzi, ndikupanga ma mamolekyulu amadzi owopsa. Katunduyu ndi wofunikira kwambiri pakukumba kwamadzi, monga maonekedwe kwambiri amathandizira kuti makulidwe ake asachiritse, kuonetsetsa kuti makanema azisinthasintha komanso kupitiliza.
2. Njira zothandizira kutentha kukana
2.1 Wonjezerani kukhazikika kwa zokutira
Kukhalapo kwa cellulose ya hydroxyethyl kumatha kupititsa patsogolo kukhazikika kwamafuta a zokutira zalabala. Makutu a utoto nthawi zambiri amachepetsa, ndipo hydroxyethyl cellulose amachepetsa izi ndikusunga utoto wa utoto. Izi zili choncho chifukwa gulu la hydroxyethyl mu molekyulu ya HEC likhoza kupanga maukonde okhudzana ndi thupi ndi zigawo zina muzovala, zomwe zimapangitsa kuti filimuyo ikhale yokhazikika komanso imapangitsa kuti ikhale yabwino komanso ikugwira ntchito pansi pa kutentha kwakukulu.
2.2 Kupititsa patsogolo makina a filimu yokutira
Makina opanga filimuyo, monga kusinthasintha, mphamvu yowoneka bwino, ndi zina mwa zina. Kukhazikitsa kwa Hec kumatha kukulitsa mphamvu yamakina a filimu yokutidwayo, yomwe imadziwika chifukwa cha zotsatira zake zokutira zomwe zimapangitsa kuti filimuyo izitentheke. Kanema wophatikizika samangosinthana kutentha, komanso amalimbikitsa kuthana ndi kupsinjika kwa thupi komwe kumachitika chifukwa cha kuchuluka kwa mafuta akunja komanso kuphatikizika, kupewa kuwonongeka kwa filimu yokutira.
2.3 Limbikitsani kumamatira kwa filimu yokutira
Pansi pa kutentha kwambiri, zokutira zosawelidwa zimakonda kuchepetsedwa kapena kuyika, zomwe zimachitika makamaka chifukwa cha kutsatira kwenikweni pakati pa gawo lapansi ndi filimu yokutira. HEC ikhoza kupititsa patsogolo kumamatira kwa zokutira ku gawo lapansi popititsa patsogolo ntchito yomanga ndi kupanga mafilimu a zokutira. Izi zimathandiza zokutira kuti zigwirizane kwambiri ndi gawo lapansi pa kutentha kwakukulu, kuchepetsa chiopsezo cha peeling kapena delamination.
3. Deta yoyesera ndi ntchito zothandiza
3.1 Mapangidwe oyesera
Pofuna kutsimikizira zotsatira za hydroththyl cellulose pa kukana kwa madzi osiyidwa mwachangu, zoyesayesa zingapo zosefukira. Poyesera, zinthu zosiyanasiyana za HEC zitha kuwonjezeredwa ku zokutira zopanda madzi, ndiyeno kukhazikika kwamafuta, zida zamakina ndi kumamatira kwa zokutira zitha kuyesedwa kudzera mu kusanthula kwa thermogravimetric (TGA), kusanthula kwamphamvu kwa thermomechanical (DMA) ndi kuyesa kwamphamvu.
3.2 Zotsatira zoyeserera
Zotsatira zoyesera zikuwonetsa kuti mutatha kuwonjezera HEC, kutentha kosagwira kutentha kwa zokutira kumawonjezeka kwambiri. Mu gulu lolamulira popanda HEC, filimu yokutira inayamba kuwola pa 150 ° C. Pambuyo powonjezera HEC, kutentha komwe filimu yophimbayo imatha kupirira idakwera kufika pa 180 ° C. Kuonjezera apo, kuyambika kwa HEC kunawonjezera mphamvu yowonongeka ya filimu yophimba pafupifupi 20%, pamene kuyesa kwa peeling kunasonyeza kuti kumatira kwa chophimba ku gawo lapansi kunawonjezeka ndi pafupifupi 15%.
4. Ntchito zaumisiri ndi njira zodzitetezera
4.1 Ntchito yaukadaulo
Pamapulogalamu othandiza, kugwiritsa ntchito hydroxyethyl cellulose kumatha kusintha magwiridwe antchito ndi ntchito yomaliza yothira mafuta a mphira. Kutsekedwa kosinthika kumeneku kumatha kugwiritsidwa ntchito m'minda monga kumangirira kusamwitsa madzi, mkati mwazithunzi zakumadzi, ndipo kumapaka mphuno zodzitchinjiriza.
4.2 Kusamala
Ngakhale HEC ikhoza kupititsa patsogolo kwambiri ntchito zokutira, mlingo wake uyenera kuyendetsedwa moyenera. Kuchulukitsitsa kwa HEC kungayambitse kukhuthala kwa zokutira kukhala kokwera kwambiri, zomwe zimakhudza ntchito yomanga. Chifukwa chake, mu kapangidwe weniweni, Mlingo wa Hec uyenera kukhazikitsidwa chifukwa choyesera kuti akwaniritse bwino ntchito ndi zomanga.
Ma cellulose a Hydroxyethyl amathandizira bwino kukana kwa kutentha kwa zokutira zopaka phula losapaka madzi powonjezera kukhuthala kwa zokutira, kupititsa patsogolo mawonekedwe a filimu yokutira, ndikuwongolera kumamatira kwa zokutira. Deta yoyesera ndi ntchito zothandiza zimasonyeza kuti HEC ili ndi zotsatira zazikulu pakuwongolera kukhazikika kwa kutentha ndi kudalirika kwa zokutira. Kugwiritsa ntchito moyenera kwa HEC sikungangowonjezera ntchito yomanga zokutira, komanso kukulitsa kwambiri moyo wautumiki wa zokutira zopanda madzi m'malo otentha kwambiri, kupereka malingaliro ndi njira zatsopano zopangira zida zomangira madzi.
Nthawi yotumiza: Jul-08-2024