Kusakaniza kosaya, komwe kumathandiza kwambiri kuti ntchito yomanga matope owuma ikhale yoposa 40% ya mtengo wamtengo wapatali mumatope osakaniza.Zosakaniza zambiri pamsika wapakhomo zimaperekedwa ndi opanga akunja, ndipo mulingo wazinthu zomwe zimaperekedwa umaperekedwanso ndi ogulitsa.Mtengo wa matope osakanikirana owuma umakhalabe wokwera motero, ndipo zimakhala zovuta kufalitsa matope wamba ndi pulasitala ndi kuchuluka kwakukulu komanso kosiyanasiyana.Zogulitsa zamsika zapamwamba zimayendetsedwa ndi makampani akunja, ndipo opanga matope osakanizidwa ndi owuma amakhala ndi phindu lochepa komanso otsika mtengo;kugwiritsa ntchito admixtures alibe kafukufuku mwadongosolo ndi chandamale, ndipo mwakhungu kutsatira mafomu akunja.Pano, zomwe tikugawana nanu ndi, kodi hydroxypropyl methylcellulose amagwira ntchito bwanji pazosakaniza zosakanikirana zamatope owuma?
Hydroxypropyl methylcellulose ndi mitundu ya cellulose yomwe kutulutsa kwake ndikugwiritsa ntchito kwakhala kukuchulukirachulukira m'zaka zaposachedwa.Hydroxypropyl methylcellulose amapangidwa ndi thonje woyengedwa pambuyo alkalization mankhwala, ntchito propylene okusayidi ndi methyl kolorayidi monga etherification agents , non-ionic mapadi wosakaniza ether wopangidwa kudzera angapo zochita.Mlingo wolowa m'malo nthawi zambiri ndi 1.2 ~ 2.0.Katundu wake ndi wosiyana malinga ndi kuchuluka kwa methoxyl zomwe zili ndi hydroxypropyl.Makhalidwe a hydroxypropyl methylcellulose ndi awa:
1. Hydroxypropyl methylcellulose imasungunuka mosavuta m'madzi ozizira, ndipo imakumana ndi zovuta pakusungunuka m'madzi otentha.Koma kutentha kwake kwa gelation m'madzi otentha ndikokwera kwambiri kuposa kwa methyl cellulose.Kusungunuka m'madzi ozizira kumakhalanso bwino kwambiri poyerekeza ndi methyl cellulose.
2. Kukhuthala kwa hydroxypropyl methylcellulose kumagwirizana ndi kulemera kwake kwa maselo.Kulemera kwa maselo, kumapangitsanso kukhuthala.Kutentha kumakhudzanso kukhuthala kwake, pamene kutentha kumawonjezeka, kukhuthala kumachepa.Komabe, chikoka cha mamasukidwe ake apamwamba komanso kutentha kwake kumakhala kotsika kuposa kwa methyl cellulose.Yankho lake ndi lokhazikika likasungidwa kutentha.
3. Kusungidwa kwa madzi kwa hydroxypropyl methylcellulose kumadalira kuchuluka kwake, kukhuthala kwake, ndi zina zotero, ndipo mlingo wake wosungira madzi pansi pa kuchuluka komweko ndi wapamwamba kuposa wa methyl cellulose.
4. Hydroxypropyl methylcellulose ndi yokhazikika kwa asidi ndi alkali, ndipo njira yake yamadzimadzi imakhala yokhazikika kwambiri mu pH = 2 ~ 12.Madzi a caustic ndi laimu sakhala ndi zotsatira zochepa pa ntchito yake, koma alkali amatha kufulumizitsa kusungunuka kwake ndikuwonjezera kukhuthala kwake pang'ono.Hydroxypropyl methylcellulose ndi yokhazikika ku mchere wamba, koma pamene mchere wa mchere uli wambiri, kukhuthala kwa hydroxypropyl methylcellulose solution kumawonjezeka.
5. Hydroxypropyl methylcellulose imatha kusakanikirana ndi ma polima osungunuka ndi madzi kuti apange njira yofananira komanso yapamwamba kwambiri.Monga polyvinyl mowa, wowuma ether, masamba chingamu, etc.
6. Hydroxypropyl methylcellulose ili ndi kukana bwino kwa enzyme kuposa methylcellulose, ndipo kuthekera kwa kuwonongeka kwa enzymatic kwa yankho lake ndi kotsika kuposa methylcellulose.
7. Kuphatikizika kwa hydroxypropyl methylcellulose kumapangidwe amatope ndi apamwamba kuposa a methylcellulose.
Nthawi yotumiza: May-09-2023