Kodi matanthauzo a ulusi, cellulose, ndi cellulose ether ndi ati ndipo kusiyana kwake ndi kotani?

Ufa wa putty umapangidwa makamaka ndi zinthu zopangira filimu (zipangizo zomangira), zodzaza, zosungira madzi, zothina, zochotsera poizoni, ndi zina zotero. Zipangizo zopangira mankhwala achilengedwe zomwe zimapezeka mu ufa wa putty zimaphatikizapo: cellulose, starch yosungunuka kale, starch ether, polyvinyl alcohol, dispersible latex powder, ndi zina zotero. Pansipa, Polycat idzasanthula momwe zinthu zosiyanasiyana zopangira mankhwala zimagwirira ntchito limodzi ndi limodzi.

Ulusi:

Ulusi (US: Ulusi; Chingerezi: Ulusi) amatanthauza chinthu chopangidwa ndi ulusi wopitirira kapena wosapitirira. Monga ulusi wa zomera, ubweya wa nyama, ulusi wa silika, ulusi wopangidwa, ndi zina zotero.

Selosi:

Cellulose ndi polysaccharide yayikulu yopangidwa ndi shuga ndipo ndiye gawo lalikulu la makoma a maselo a zomera. Pa kutentha kwa chipinda, cellulose sisungunuka m'madzi kapena m'zinthu zosungunuka zachilengedwe. Kuchuluka kwa cellulose mu thonje kuli pafupifupi 100%, zomwe zimapangitsa kuti ikhale gwero lenileni la cellulose. Kawirikawiri, cellulose imakhala 40-50%, ndipo pali 10-30% hemicellulose ndi 20-30% lignin.

Kusiyana pakati pa cellulose (kumanja) ndi starch (kumanzere):

Kawirikawiri, starch ndi cellulose ndi ma macromolecular polysaccharides, ndipo formula ya molekyulu ikhoza kufotokozedwa ngati (C6H10O5) n. Kulemera kwa molekyulu ya cellulose ndi kwakukulu kuposa kwa starch, ndipo cellulose imatha kuwola kuti ipange starch. Cellulose ndi D-glucose ndi β-1,4 glycoside Macromolecular polysaccharides yopangidwa ndi ma bond, pomwe starch imapangidwa ndi α-1,4 glycosidic bonds. Cellulose nthawi zambiri si nthambi, koma starch imapangidwa ndi 1,6 glycosidic bonds. Cellulose imasungunuka bwino m'madzi, pomwe starch imasungunuka m'madzi otentha. Cellulose sikhudzidwa ndi amylase ndipo siisintha kukhala buluu ikakumana ndi ayodini.

Cellulose Ether:

Dzina la Chingerezi laether ya cellulosendi cellulose ether, yomwe ndi polima yokhala ndi kapangidwe ka ether yopangidwa ndi cellulose. Ndi chinthu chopangidwa ndi mankhwala a cellulose (chomera) ndi etherification agent. Malinga ndi kapangidwe ka mankhwala ka gulu la substituent pambuyo pa etherification, imatha kugawidwa m'magulu a anionic, cationic ndi nonionic ethers. Kutengera ndi etherification agent yomwe imagwiritsidwa ntchito, pali methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, cyanoethyl cellulose, benzyl cyanoethyl cellulose, carboxymethyl hydroxyethyl cellulose ndi phenyl cellulose, ndi zina zotero. Mumakampani omanga, cellulose ether imatchedwanso cellulose, lomwe ndi dzina losazolowereka, ndipo imatchedwa cellulose (kapena ether) molondola.

Njira Yothirira Cellulose Ether Thickener:

Zothina za cellulose ether ndi zothina zosagwiritsa ntchito ma ionic zomwe zimakhuthala makamaka chifukwa cha madzi ndi kusakanikirana pakati pa mamolekyu.

Unyolo wa polima wa efa ya cellulose ndi wosavuta kupanga mgwirizano wa haidrojeni ndi madzi m'madzi, ndipo mgwirizano wa haidrojeni umapangitsa kuti ukhale ndi madzi ambiri komanso kusokonekera kwa mamolekyulu.

Pameneether ya celluloseChokhuthala chimawonjezeredwa ku utoto wa latex, chimayamwa madzi ambiri, zomwe zimapangitsa kuti voliyumu yake ikule kwambiri, zomwe zimachepetsa malo omasuka a utoto, zodzaza ndi tinthu ta latex;

Nthawi yomweyo, ma cellulose ether molecular chains amalumikizana kuti apange mawonekedwe a netiweki yamitundu itatu, ndipo utoto, zodzaza ndi tinthu ta latex zimazunguliridwa pakati pa netiweki ndipo sizingayende momasuka.

Pogwiritsa ntchito zotsatirazi ziwiri, kukhuthala kwa dongosololi kumawonjezeka! Takwaniritsa mphamvu yokhuthala yomwe tinkafuna!