Mtengo wotsika wa hec hydroxyethyl cellulose

Hydroxyethyl cellulose (HEC) ndi polima yosunthika yomwe imagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikiza zokutira, zomatira, zopangira zosamalira anthu, komanso mankhwala. Pamene kufunika kwa HEC kukukula m'mafakitalewa, opanga akufufuza njira zoperekera njira zotsika mtengo kuti akwaniritse zosowa za msika. M'nkhaniyi, tikambirana njira zina zomwe opanga angaperekere mankhwala otsika mtengo a HEC.

Njira imodzi yoperekera HEC yotsika mtengo ndikuipanga pogwiritsa ntchito zida zotsika mtengo. HEC imachokera ku cellulose, yomwe nthawi zambiri imapezeka kuchokera ku zamkati zamatabwa, matumba a thonje, kapena zomera zina. Komabe, mtengo wa cellulose ukhoza kusiyanasiyana malinga ndi gwero ndi mtundu wake. Opanga angagwiritse ntchito ma cellulose otsika kapena opangidwanso kuti apange HEC, zomwe zingathandize kuchepetsa mtengo wopangira.

Njira ina yoperekera HEC yotsika mtengo ndikukulitsa njira zopangira. HEC imapangidwa ndikuchitapo kanthu pa cellulose ndi ethylene oxide, ndikutsatiridwa ndi etherification ndi monochloroacetic acid kapena mankhwala ena. Njira yopangirayi imatha kukonzedwa bwino pogwiritsa ntchito zinthu zowoneka bwino, monga kutentha kwambiri kapena kupanikizika, kapena kugwiritsa ntchito zida zosiyanasiyana. Kuwongolera njira zopangira kungachepetse ndalama zopangira ndikupangitsa kuti pakhale zinthu zotsika mtengo za HEC.

Njira yachitatu yoperekera HEC yotsika mtengo ndiyo kuyang'ana pakupanga HEC yokhala ndi ma viscosity otsika. HEC imapezeka m'makalasi osiyanasiyana a viscosity, kuyambira otsika mpaka apamwamba. Magalasi apamwamba amawonekedwe amakhala ndi mawonekedwe abwinoko okhuthala komanso okwera mtengo. Popanga magiredi otsika a viscosity a HEC, opanga atha kupereka zinthu zotsika mtengo zomwe zimakwaniritsa zosowa za msika.

Pomaliza, opanga angapereke HEC yotsika mtengo poyang'ana njira zopangira zotsika mtengo. Mwachitsanzo, opanga ena apanga njira zatsopano zopangira zomwe zimagwiritsa ntchito mphamvu zochepa kapena mankhwala ocheperako, zomwe zimapangitsa kuti mtengo wopangira ukhale wotsika. Opanga ena atha kuyang'ana kwambiri kukhathamiritsa njira zawo zogulitsira kapena maukonde ogawa kuti achepetse ndalama zoyendera ndi zosungira.

Poyang'ana zinthu zotsika mtengo za HEC, ogula ayenera kudziwa za malonda omwe angakhale nawo. Zogulitsa zotsika mtengo za HEC zitha kukhala ndi chiyero chochepa, kukhuthala kochepa, kapena zinthu zina zabwino zomwe zingakhudze momwe amagwirira ntchito pamapulogalamu osiyanasiyana. Ogula akuyeneranso kusamala ndi zinthu zomwe mitengo yake imakhala yotsika kwambiri poyerekeza ndi kuchuluka kwa msika, chifukwa zitha kukhala zotsika kapena zochokera kuzinthu zosadalirika.

Mwachidule, opanga angapereke mankhwala otsika mtengo a HEC pogwiritsa ntchito zipangizo zotsika mtengo, kukhathamiritsa njira yopangira, kuyang'ana pa magiredi otsika a viscosity, ndi kugwiritsa ntchito njira zopangira zotsika mtengo. Komabe, ogula ayenera kudziwa zamalonda omwe angakhalepo ndipo ayenera kusankha zinthu zomwe zimakwaniritsa zosowa zawo komanso zofunikira.