Kodi hydroxyethyl cellulose ndi chiyani?

Kodi hydroxyethyl cellulose ndi chiyani?

Hydroxyethyl cellulose (HEC), yoyera kapena yotuwa, yachikasu, yopanda fungo, yopanda poizoni kapena yolimba, yokonzedwa ndi etherification ya alkaline cellulose ndi ethylene oxide (kapena chlorohydrin), yamtundu wa Nonionic soluble cellulose ethers. Chifukwa HEC ili ndi zinthu zabwino monga kukhuthala, kuyimitsa, kufalitsa, emulsifying, kugwirizana, kupanga mafilimu, kuteteza chinyezi ndi kupereka colloids zotetezera, zakhala zikugwiritsidwa ntchito kwambiri pofufuza mafuta, zokutira, zomangamanga, mankhwala ndi chakudya, nsalu, mapepala ndi ma polima. Polymerization ndi magawo ena.

Ma cellulose a Hydroxyethyl amagwiritsidwa ntchito kwambiri pamakampani opanga zokutira. Tiyeni tiwone momwe zimagwirira ntchito mu zokutira:

Kodi chimachitika ndi chiyani ngati hydroxyethyl cellulose ikumana ndi zokutira zokhala ndi madzi?

Monga si ionic surfactant, hydroxyethyl cellulose ili ndi zotsatirazi kuwonjezera pa thickening, kuyimitsa, kumanga, kuyandama, kupanga mafilimu, kubalalika, kusunga madzi ndi kupereka colloids zoteteza:

HEC imasungunuka m'madzi otentha kapena ozizira, ndipo sichimawotcha kutentha kwambiri kapena kutentha, kumapangitsa kuti ikhale ndi mitundu yambiri ya solubility ndi viscosity, komanso gelling yopanda kutentha;

Mphamvu yosungira madzi imakhala yowirikiza kawiri ya methyl cellulose, ndipo imakhala ndi malamulo oyendetsera bwino;

Non-ionic palokha imatha kukhala limodzi ndi ma polima ena osungunuka m'madzi, ma surfactants, ndi mchere, ndipo ndiwowonjezera bwino kwambiri wa colloidal womwe uli ndi mayankho a electrolyte apamwamba kwambiri;

Poyerekeza ndi methyl cellulose yodziwika bwino ndi hydroxypropyl methyl cellulose, kuthekera kobalalika kwaHECndiye woyipa kwambiri, koma chitetezo cha colloid ndi champhamvu kwambiri.

Popeza kuti hydroxyethyl cellulose opangidwa pamwamba ndi ufa kapena fibrous olimba, Shandong Heda akukumbutsani kulabadira mfundo zotsatirazi pokonzekera hydroxyethyl cellulose mowa mowa mayi:

(1) Isanayambe komanso itatha kuwonjezera hydroxyethyl cellulose, iyenera kugwedezeka mpaka yankho likuwonekera bwino komanso lomveka bwino.

(2) Iyenera kusefedwa pang'onopang'ono mu mbiya yosakaniza, ndipo musagwirizane mwachindunji ndi cellulose ya hydroxyethyl ndi cellulose ya hydroxyethyl mu mbiya yosakaniza yochuluka kapena mu mawonekedwe a zotupa ndi mipira.

(3) Kutentha kwa madzi ndi pH mtengo wa madzi ali ndi ubale wodziwikiratu ndi kusungunuka kwa cellulose ya hydroxyethyl, kotero chidwi chapadera chiyenera kuperekedwa kwa izo.

(4) Osawonjezerapo zinthu za alkaline kusakaniza ufa wa hydroxyethyl cellulose usanalowedwe ndi madzi. Kukweza pH pokhapokha kunyowetsa kumathandizira kusungunuka.

(5) Momwe mungathere, onjezerani antifungal wothandizira pasadakhale.

(6) Pamene ntchito mkulu mamasukidwe akayendedwe mapadi hydroxyethyl mapadi, ndende ya mowa mayi sayenera kupitirira 2.5-3% (ndi kulemera), apo ayi mowa mayi n'kovuta kupirira.