Hydroxypropyl methylcellulose e sebelisoa haholo-holo e le dispersant tlhahiso ea polyvinyl chloride, 'me ke moemeli ea ka sehloohong ea thusang ho lokisetsa PVC ka ho emisa polymerization. Ts'ebetsong ea kaho ea indasteri ea kaho, e sebelisoa haholo kahong ea mechini joalo ka moaho oa marako, ho lila, ho roala, joalo-joalo; haholo-holo kahong ea mokhabiso, e sebelisoa ho maneha lithaele tsa ceramic, 'mabole le mekhabiso ea polasetiki. E na le matla a holimo a tlamahano 'me e ka fokotsa bongata ba samente. . E sebelisoa e le motenya indastering ea pente, e ka etsang hore lera le khanye le ho tiea, le thibele ho tlosoa ha phofo, le ntlafatse ts'ebetso ea boemo, joalo-joalo.
Ka seretse sa samente le gypsum-based slurry, hydroxypropyl methylcellulose haholo-holo e bapala karolo ea ho boloka metsi le ho teteaneng, e ka ntlafatsang ka katleho matla a momahaneng le ho hanyetsa ho tsuba ha slurry. Lintho tse kang mocheso oa moea, mocheso le lebelo la khatello ea moea li tla ama sekhahla sa ho fetoha ha metsi seretseng sa samente le lihlahisoa tse thehiloeng ho gypsum. Ka hona, ka linako tse fapaneng tsa selemo, ho na le phapang e itseng molemong oa ho boloka metsi oa lihlahisoa tse nang le palo e lekanang ea hydroxypropyl methylcellulose e kentsoeng. Moahong o ikhethileng, phello ea ho boloka metsi ea slurry e ka fetoloa ka ho eketsa kapa ho fokotsa palo ea HPMC e kentsoeng. Ho boloka metsi a methyl cellulose ether tlas'a maemo a mocheso o phahameng ke pontšo ea bohlokoa ho khetholla boleng ba hydroxypropyl methyl cellulose ether. Lihlahisoa tse ntle tsa hydroxypropyl methylcellulose li ka rarolla bothata ba ho boloka metsi tlas'a mocheso o phahameng. Linakong tsa mocheso o phahameng, haholo-holo libakeng tse chesang le tse omileng le kaho ea lera le tšesaane lehlakoreng le chabileng, HPMC ea boleng bo holimo ea hlokahala ho ntlafatsa ho boloka metsi a seretse.
Hydroxypropyl methylcellulose (HPMC) ea boleng bo holimo e na le ts'ebetso e ntle haholo. Lihlopha tsa eona tsa methoxy le hydroxypropoxy li ajoa ka ho lekana hammoho le ketane ea molek'hule ea cellulose, e ka eketsang liathomo tsa oksijene ho hydroxyl le ether bond. Bokhoni ba ho ikopanya le metsi ho theha maqhama a haedrojene a fetola metsi a sa lefelloeng hore e be metsi a tlamiloeng, ka hona a laola ka nepo mouoane oa metsi o bakoang ke mocheso o phahameng oa leholimo le ho boloka metsi a mangata. Metsi a hlokahala bakeng sa hydration bakeng sa ho beha lisebelisoa tsa samente tse kang samente le gypsum. Palo e nepahetseng ea HPMC e ka boloka mongobo ka har'a seretse nako e telele e lekaneng e le hore mokhoa oa ho beha le ho thatafatsa o tsoele pele.
Palo ea hydroxypropyl methylcellulose (HPMC) e hlokahalang bakeng sa ho boloka metsi a lekaneng e itšetlehile ka:
Ho monyela ha lera la motheo
Sebopeho sa Seretse
Seretse lera botenya
Tlhokahalo ea metsi a seretse
Nako ea ho beha thepa ea cementitious
Hydroxypropyl methylcellulose e ka ba ka mokhoa o ts'oanang le ka katleho e qhalakantsoeng ka seretse sa samente le lihlahisoa tse thehiloeng ho gypsum, 'me ea phuthela likaroloana tsohle tse tiileng,' me ea etsa filimi ea ho kolobisa, mongobo o botlaaseng o lokolloa butle-butle ka nako e telele, 'me o lumellana le inorganic. Tsela ea hydration ea thepa ea gelled e tiisa matla a tlamahano le matla a khatello ea thepa.
Ka hona, mohahong o phahameng oa mocheso oa lehlabula, e le ho finyella phello ea ho boloka metsi, hoa hlokahala ho eketsa lihlahisoa tsa boleng bo phahameng ba HPMC ka bongata bo lekaneng ho ea ka foromo, ho seng joalo, ho tla ba le hydration e sa lekaneng, matla a fokotsehileng, ho phunyeha, ho pata. le ho tsholla ho bakoang ke ho omisa haholo. mathata, empa hape eketsa bothata ba kaho ea basebetsi. Ha mocheso o theoha, palo ea metsi a HPMC e ekelitsoeng e ka fokotsoa butle-butle, 'me phello e tšoanang ea ho boloka metsi e ka finyelloa.
Nako ea poso: Apr-10-2023