Hydroxyethyl Methyl Cellulose (HEMC)ndi gawo lofunikira la cellulose ether ndipo ndi la non-ionic cellulose ether. HEMC imapezedwa ndi kusinthidwa kwa mankhwala ndi cellulose yachilengedwe ngati zopangira. Mapangidwe ake ali ndi hydroxyethyl ndi methyl substituents, kotero ali ndi katundu wapadera thupi ndi mankhwala ndipo amagwiritsidwa ntchito kwambiri mu zomangira, zokutira, mankhwala tsiku lililonse, mankhwala ndi zina.
1. Thupi ndi mankhwala katundu
HEMC nthawi zambiri imakhala yoyera kapena yoyera ya ufa kapena ma granules, omwe amatha kusungunuka mosavuta m'madzi ozizira kuti apange njira yowonekera kapena yochepa kwambiri ya colloidal. Makhalidwe ake akuluakulu ndi awa:
Kusungunuka: HEMC imatha kusungunuka mwachangu m'madzi ozizira, koma imakhala yosasungunuka bwino m'madzi otentha. Kusungunuka kwake ndi kukhuthala kwake kumasintha ndi kusintha kwa kutentha ndi pH mtengo.
Kukula kwamphamvu: HEMC ili ndi mphamvu yakukhuthala m'madzi ndipo imatha kukulitsa kukhuthala kwa yankho.
Kusungirako madzi: Imakhala ndi ntchito yabwino yosungira madzi ndipo imatha kuletsa kutayika kwamadzi pazinthuzo.
Katundu wopanga mafilimu: HEMC imatha kupanga filimu yowoneka bwino yofananira pamtunda ndi kulimba komanso mphamvu.
Lubricity: Chifukwa cha mawonekedwe ake apadera a mamolekyu, HEMC imatha kupereka mafuta abwino kwambiri.
2. Njira yopangira
Kapangidwe ka HEMC kumaphatikizapo izi:
Alkalization: Ma cellulose achilengedwe amathandizidwa ndi zinthu zamchere kuti apange cellulose yamchere.
Etherification reaction: Powonjezera ma methylating agents (monga methyl chloride) ndi hydroxyethylating agents (monga ethylene oxide), cellulose amakumana ndi etherification reaction pa kutentha kwina ndi kukakamizidwa.
Pambuyo pochiza: Zomwe zimapangidwira zimachotsedwa, zimatsukidwa, zowumitsidwa, ndikuphwanyidwa kuti zitheke.Mtengo HEMCmankhwala.
3. Magawo akuluakulu ogwiritsira ntchito
(1) Zipangizo zomangira HEMC imagwiritsidwa ntchito kwambiri pantchito yomanga, makamaka mumatope a simenti, ufa wa putty, zomatira matailosi, gypsum ndi zinthu zina. Ikhoza kupititsa patsogolo kukhuthala, kusungira madzi ndi anti-sagging katundu wa zomangamanga, kutalikitsa nthawi yotseguka, motero kupititsa patsogolo ntchito yomanga.
(2) Utoto ndi inki Mu utoto, HEMC imagwira ntchito ngati thickener ndi emulsifier stabilizer kuti ipititse patsogolo kukhuthala ndi rheology ya utoto ndikuletsa zokutira kuti zisagwe. Kuonjezera apo, ikhoza kupereka zinthu zabwino zopanga mafilimu, zomwe zimapangitsa kuti utoto ukhale wofanana komanso wosalala.
(3) Mankhwala ndi zodzoladzola HEMC angagwiritsidwe ntchito monga zomatira ndi mafilimu opanga mafilimu pamapiritsi a mankhwala, komanso thickener ndi moisturizer mu mankhwala osamalira khungu. Chifukwa chachitetezo chake chachikulu komanso kuyanjana ndi biocompatibility, nthawi zambiri imagwiritsidwa ntchito pazinthu monga madontho a maso, oyeretsa kumaso, ndi mafuta odzola.
(4) Mankhwala a tsiku ndi tsiku Mu mankhwala a tsiku ndi tsiku monga zotsukira ndi zotsukira mano, HEMC imagwiritsidwa ntchito ngati thickener ndi stabilizer kupititsa patsogolo rheology ndi kukhazikika kwa mankhwala.
4. Ubwino ndi kuteteza chilengedwe
HEMC ili ndi mphamvu zowonongeka komanso zoteteza chilengedwe ndipo sizingawononge chilengedwe kwa nthawi yaitali. Panthawi imodzimodziyo, ndizopanda poizoni komanso zopanda vuto, zosakwiyitsa khungu la munthu ndi mucous nembanemba, ndipo zimakwaniritsa zofunikira za chitetezo cha chilengedwe chobiriwira ndi chitukuko chokhazikika.
5. Kuyembekeza kwa msika ndi momwe chitukuko chikuyendera
Ndi chitukuko cha mafakitale omanga ndi makampani opanga mankhwala tsiku ndi tsiku, kufunikira kwa msika wa HEMC kukukulirakulira. M'tsogolomu, pamene anthu amayang'anitsitsa kwambiri zipangizo zowononga chilengedwe ndikupititsa patsogolo ntchito zamalonda, HEMC idzagwiritsidwa ntchito kwambiri m'madera osiyanasiyana. Kuphatikiza apo, kafukufuku ndi chitukuko cha zinthu zatsopano zogwirira ntchito za HEMC (monga kutentha kwambiri komanso mtundu waposachedwa) zidzalimbikitsanso kugwiritsa ntchito kwake pamsika wapamwamba kwambiri.
Monga multifunctional and high-performance cellulose ether,hydroxyethyl methylcellulose (HEMC)imagwira ntchito yofunikira pakumanga, zokutira, zamankhwala ndi madera ena omwe ali ndi mawonekedwe ake apadera akuthupi ndi mankhwala. Ndi kupita patsogolo kwa sayansi ndi luso lamakono komanso kukula kwa madera ogwiritsira ntchito, HEMC idzagwira ntchito yofunika kwambiri pamakampani amakono ndikupereka chithandizo champhamvu pa chitukuko cha mafakitale okhudzana nawo.
Nthawi yotumiza: Nov-11-2024