Momwe mungasankhire cellulose ya hydroxyethyl?

Kusakaniza hydroxyethyl cellulose (HEC) ndi ntchito yomwe imafuna kuwongolera bwino komanso luso laukadaulo. HEC ndi madzi osungunuka a polima zinthu zomwe zimagwiritsidwa ntchito pomanga, zokutira, mankhwala, mankhwala a tsiku ndi tsiku ndi mafakitale ena, ndi makulidwe, kuyimitsidwa, kugwirizanitsa, emulsification, kupanga mafilimu, colloid yoteteza ndi ntchito zina.

1. Sankhani njira yoyenera yosungunulira

HEC nthawi zambiri imasungunuka m'madzi ozizira, koma imathanso kusungunuka muzitsulo za organic monga ethanol ndi madzi osakaniza, ethylene glycol, ndi zina zotero. amagwiritsidwa ntchito muzofuna kwambiri. Madzi ayenera kukhala opanda zonyansa, ndipo madzi olimba ayenera kupewedwa kuti asakhudze kusungunuka ndi ubwino wa yankho.

2. Sungani kutentha kwa madzi

Kutentha kwa madzi kumakhudza kwambiri kutha kwa HEC. Nthawi zambiri, kutentha kwa madzi kuyenera kukhala pakati pa 20 ° C ndi 25 ° C. Ngati kutentha kwa madzi kuli kwakukulu kwambiri, HEC ndi yosavuta kugwirizanitsa ndikupanga gel misa yomwe imakhala yovuta kusungunuka; ngati kutentha kwa madzi kuli kochepa kwambiri, kusungunuka kumachepa, zomwe zimakhudza kusakaniza bwino. Choncho, onetsetsani kuti kutentha kwa madzi kuli mumtundu woyenera musanasakanize.

3. Kusankhidwa kwa zipangizo zosakaniza

Kusankhidwa kwa zida zosakaniza kumatengera zofunikira zomwe zimagwiritsidwa ntchito komanso kuchuluka kwa kupanga. Pochita ntchito zazing'ono kapena za labotale, blender kapena chopukusira chamanja chingagwiritsidwe ntchito. Pakupanga kwakukulu, chosakaniza chachikulu cha shear kapena disperser chimafunika kuonetsetsa kusakanikirana kofanana ndikupewa kupanga midadada ya gel. Kuthamanga kwachangu kwa zida kuyenera kukhala kocheperako. Kuthamanga kwambiri kumapangitsa kuti mpweya ulowe muzitsulo ndikutulutsa thovu; wodekha kwambiri sangathe kubalalitsa HEC.

4. HEC njira yowonjezera

Pofuna kupewa kupanga magulu a gel panthawi ya kusungunuka kwa HEC, HEC iyenera kuwonjezeredwa pang'onopang'ono poyambitsa. Masitepe enieni ndi awa:

Kukondoweza koyamba: Mu sing'anga yokonzekera kusungunula, yambitsani choyambitsanso ndikugwedeza pa liwiro lapakati kuti mupange vortex yokhazikika mumadzimadzi.

Kuonjezera pang'onopang'ono: Pang'onopang'ono ndi molingana kuwaza ufa wa HEC mu vortex, pewani kuwonjezera kwambiri nthawi imodzi kuti muteteze kusakanikirana. Ngati ndi kotheka, gwiritsani ntchito sieve kapena funnel kuti muwongolere liwiro lowonjezera.

Kulimbikitsana kosalekeza: Pambuyo pa HEC yowonjezereka, pitirizani kuyambitsa nthawi, nthawi zambiri mphindi 30 mpaka 1 ora, mpaka yankho likuwonekera bwino ndipo palibe particles zosasunthika.

5. Kulamulira kwa nthawi yowonongeka

Nthawi yowonongeka imadalira kalasi ya viscosity ya HEC, kutentha kwa sing'anga yosungunuka ndi zinthu zochititsa chidwi. HEC yokhala ndi kalasi yayikulu ya viscosity imafuna nthawi yayitali yosungunuka. Nthawi zambiri, zimatengera maola 1 mpaka 2 kuti HEC isungunuke. Ngati zida zometa ubweya wambiri zimagwiritsidwa ntchito, nthawi yowonongeka ikhoza kufupikitsidwa, koma kusonkhezera kwakukulu kuyenera kupewedwa kuti tipewe kuwonongeka kwa maselo a HEC.

6. Kuwonjezera zinthu zina

Pakutha kwa HEC, zosakaniza zina zingafunikire kuwonjezeredwa, monga zotetezera, pH osintha kapena zina zowonjezera ntchito. Zosakaniza izi ziyenera kuwonjezeredwa pang'onopang'ono pambuyo poti HEC itasungunuka kwathunthu, ndipo kusonkhezera kuyenera kupitiriza kuonetsetsa kuti kugawidwa kofanana.

7. Kusungirako yankho

Pambuyo kusakaniza, yankho la HEC liyenera kusungidwa mu chidebe chotsekedwa kuti madzi asasunthike komanso kuipitsidwa ndi tizilombo toyambitsa matenda. Malo osungira ayenera kukhala aukhondo, owuma komanso kutali ndi kuwala kwa dzuwa. Phindu la pH la yankho liyenera kusinthidwa kuti likhale loyenera (nthawi zambiri 6-8) kuti liwonjezere nthawi yosungirako.

8. Kuyang'anira khalidwe

Pambuyo kusakaniza, tikulimbikitsidwa kuti tiyang'ane njira yothetsera vutoli, makamaka kuyesa magawo monga mamasukidwe akayendedwe, kuwonekera ndi pH phindu la yankho kuonetsetsa kuti likukwaniritsa zofunikira. Ngati ndi kotheka, kuyezetsa tizilombo tating'onoting'ono kungathenso kuchitidwa kuti zitsimikizire ukhondo wa yankho.

Ma cellulose a Hydroxyethyl amatha kusakanikirana bwino kuti apeze mayankho apamwamba a HEC kuti akwaniritse zosowa zamadera osiyanasiyana ogwiritsira ntchito. Panthawi yogwira ntchito, ulalo uliwonse umayendetsedwa mosamalitsa kuti zisawonongeke ndikuwonetsetsa kusakanikirana kosalala komanso mtundu wa chinthu chomaliza.