Popeza mphamvu za hydroxypropyl methylcellulose ndizofanana ndi ma ether ena osungunuka m'madzi, ingagwiritsidwe ntchito mu zokutira za emulsion ndi zigawo za resin zosungunuka m'madzi monga chopangira filimu, chothina, chosakaniza ndi chokhazikika, ndi zina zotero, zomwe zimapangitsa filimu yophimbayo kukhala yolimba komanso yolimba. Kuphimba kofanana ndi kumatira, komanso kupsinjika kwa pamwamba, kukhazikika kwa ma acid ndi maziko, komanso kugwirizana ndi utoto wachitsulo.
Popeza HPMC ili ndi gel point yokwera kuposa MC, imalimbananso ndi bakiteriya kuposa ma cellulose ether ena, motero ingagwiritsidwe ntchito ngati chowonjezera pakuphimba kwamadzi a emulsion. HPMC ili ndi kukhazikika kwabwino kosungira komanso kufalikira kwake kwabwino, motero HPMC ndi yoyenera kwambiri ngati chotulutsira mu zokutira za emulsion.
Kugwiritsa ntchito hydroxypropyl methyl cellulose mumakampani opanga zokutira ndi motere.
1. Kukhuthala kosiyanasiyana kwa HPMC, kukana kutopa kwa utoto, kukana kutentha kwambiri, kufotokozera kwa mabakiteriya, kukana kusamba komanso kukhazikika kwa ma acid ndi maziko ndikwabwino; ingagwiritsidwenso ntchito ngati chotsukira utoto chokhala ndi methanol, ethanol, propanol, isopropyl alcohol, ethylene glycol, acetone, methyl ethyl ketone kapena diketone alcohol thickener; Zophimba zopangidwa ndi HPMC zopangidwa ndi emulsified zimakhala ndi kunyowa kwabwino kwambiri; HPMC kuposa HEC ndi EHEC ndi CMC chifukwa HPMC ili ndi mphamvu yabwino kuposa HEC ndi EHEC ndi CMC ngati chokhuthala cha utoto.
2. Hydroxypropyl methyl cellulose yomwe yasinthidwa kwambiri imakhala yolimba bwino kuukira kwa bakiteriya kuposa yomwe yasinthidwa pang'ono, ndipo imakhala ndi kukhazikika kwa kukhuthala kwa polyvinyl acetate. Ma ether ena a cellulose ali m'malo osungira chifukwa cha kuwonongeka kwa unyolo wa ether ya cellulose ndipo zimapangitsa kuti kukhuthala kwa chophimba kuchepe.
3. Chotsukira utoto chingakhale chosungunuka m'madzi cha HPMC (komwe methoxy ndi 28% mpaka 32%, hydroxypropoxy ndi 7% mpaka 12%), dioxymethane, toluene, paraffin, ethanol, methanol configuration, chidzagwiritsidwa ntchito pamalo oyima, ndi kukhuthala kofunikira komanso kusasinthasintha. Chotsukira utoto ichi chimachotsa utoto wamba, ma varnish, enamel, ndi ma ester ena a epoxy, epoxy amides, catalyzed epoxy amides, acrylates, ndi zina zotero. Utoto wambiri ukhoza kuchotsedwa mumasekondi ochepa, utoto wina umafunika mphindi 10 ~ 15 kapena kuposerapo, chotsukira utoto ichi ndi choyenera kwambiri pamalo amatabwa.
4. Utoto wa emulsion wamadzi ukhoza kupangidwa ndi magawo 100 a pigment yosapangidwa kapena yachilengedwe, magawo 0.5 ~ 20 a alkyl cellulose yosungunuka m'madzi kapena hydroxyalkyl cellulose ndi magawo 0.01 ~ 5 a polyoxyethylene ether kapena ester ester. Mwachitsanzo, utotowu umapezeka posakaniza magawo 1.5 a HPMC, magawo 0.05 a polyethylene glycol alkyl phenyl ether, magawo 99.7 a titanium dioxide ndi magawo 0.3 a carbon black. Kenako chisakanizocho chimasakanizidwa ndi magawo 100 a 50% solid polyvinyl acetate kuti chikhale chophimba, ndipo palibe kusiyana pakati pa filimu youma yopangidwa poigwiritsa ntchito papepala lokhuthala ndikuyipaka pang'ono ndi burashi.
Nthawi yotumizira: Meyi-20-2022