tsebisa:
Hydroxypropyl methylcellulose (HPMC) gypsum bonded gypsum ke thepa ea moaho e khahlehang e kopanyang thepa ea hydroxypropyl methylcellulose le gypsum.Motsoako ona o mocha o hlahisa thepa e sebetsang hantle haholo e nang le lits'ebetso tse ngata indastering ea kaho.
Hydroxypropyl methylcellulose (HPMC):
1.1.Tlhaloso le thepa:
Hydroxypropyl methylcellulose, eo hangata e tsejoang e le HPMC, ke cellulose ether e nkiloeng ho cellulose ea polima ea tlhaho.Tšebeliso ea eona e babatsehang ea ho boloka metsi, e teteaneng le ea ho etsa lifilimi e etsa hore e be tlatsetso e tummeng liindastering tse sa tšoaneng, ho akarelletsa le kaho.HPMC e tšoauoa ka solubility ka metsi a chesang le a batang ka bobeli, ho fana ka mefuta-futa ea likopo tse fapaneng.
1.2.Karolo ea ho aha:
Indastering ea kaho, HPMC e sebelisoa haholo joalo ka tlatsetso ea thepa e thehiloeng ho samente, lirekere le li-plaster tsa gypsum.Bokhoni ba bona ba ho boloka metsi bo ntlafatsa ts'ebetso le ho eketsa nako ea ho beha lisebelisoa tsena.HPMC e boetse e thusa ho ntlafatsa ho khomarela le ho tšoarella, ho e etsa karolo ea bohlokoa ea mekhoa ea kajeno ea ho haha.
Gypsum plaster:
2.1.Metsoako le litšobotsi:
E entsoe haholo-holo ka calcium sulfate dihydrate, gypsum ke thepa ea mohaho e sebelisoang haholo e tsejoang ka ho hanyetsa mollo, ho thibela molumo le bokaholimo bo boreleli.Hangata e sebelisoa e le thepa e khabisitsoeng bakeng sa marako le siling, e fana ka sebaka se setle le se tšoarellang.
2.2.Kopo e ntse e etsoa:
Plaster ea Gypsum e na le mefuta e mengata ea lits'ebetso indastering ea kaho, ho kenyeletsoa lithako tsa ka hare tsa marako, likarolo tse khabisitsoeng le libotlolo.Ho feto-fetoha ha eona, boiketlo ba tšebeliso le ho hanyetsa mollo o babatsehang ho etsa hore e be khetho ea pele bakeng sa merero ea kaho ea bolulo le ea khoebo.
HPMC e kopantsoeng le gypsum plaster:
3.1.Mokhoa oa tlhahiso:
Tlhahiso ea gypsum e kopantsoeng ea HPMC e kenyelletsa ho kenyelletsoa ha hydroxypropyl methylcellulose ka har'a matrix a gypsum.Sena se finyelloa ka mokhoa oa ho kopanya o laoloang ka hloko, ho etsa bonnete ba hore likaroloana tsa HPMC li arolelitsoe ka mokhoa o lekanang ka har'a matrix a gypsum.Sephetho ke thepa e kopantsoeng e ruang melemo ea HPMC le gypsum.
3.2.Litšobotsi tsa gypsum e kopantsoeng ea HPMC:
Motsoako oa HPMC le gypsum o fana ka thepa e ikhethang e kopaneng.Tsena li kenyelletsa ts'ebetso e ntlafetseng, ho khomarela ho ntlafetseng, nako e eketsehileng ea ho beha le ho tšoarella ho eketsehileng.Lisebelisoa tsa HPMC li thusa ho boloka mongobo, ho thibela ho omisa pele ho nako le ho netefatsa pheletso e tsitsitseng le e boreleli.
Tšebeliso ea gypsum e kopantsoeng ea HPMC:
4.1.Wall e phethela:
HPMC bonded gypsum plaster e atisa ho sebelisoa e le thepa e koahelang lebota.Ts'ebetso ea eona e ntlafetseng e etsa hore ho be bonolo ho e sebelisa le ho qeta, e hlahisang sebaka se setle le se setle.Nako e atolositsoeng ea ho beha e fanoeng ke HPMC e etsa bonnete ba hore plasterer e na le nako e lekaneng ea ho fihlela sephetho se lakatsehang.
4.2.Setaele sa mekhabiso:
Motsoako ona o boetse o sebelisetsoa ho etsa libotlolo tse khabisitsoeng le likarolo tsa meralo.Ho feto-fetoha ha eona ho lumella meralo le lintlha tse rarahaneng, e fana ka litsebi tsa meralo ea meralo le baqapi ba nang le menyetla e mengata ea boqapi.
4.3.Ho lokisa le ho hlaphoheloa:
Plaster e tlanngoeng ea HPMC e loketse merero ea ho lokisa le ho e nchafatsa moo ho tsamaellana ha eona le bokaholimo bo teng ba plaster le ho tšoarella ho matla ho phetha karolo ea bohlokoa.E lumella ho lokisoa ka mokhoa o se nang moeli le ho tiisa nako e telele ea sebaka se lokisitsoeng.
Melemo ea HPMC bonded gypsum:
5.1.Ntlafatsa ts'ebetso:
Ho eketsoa ha HPMC ho ntlafatsa ts'ebetso ea plaster ea gypsum, ho etsa kopo le ho qeta ho be bonolo.Sena se molemo ka ho khetheha bakeng sa li-plasterers kaha se lumella taolo e kholoanyane le ho nepahala nakong ea ho lipola.
5.2.Eketsa nako ea ho tiisa:
Nako e atolositsoeng ea ho beha e fanoeng ke HPMC e netefatsa hore plasterer e na le nako e lekaneng ea ho tlatsa kopo le ho fihlela phello e lakatsehang.Sena se molemo mererong e meholo kapa moo ho liehang ho beha nako ho hlokahalang.
5.3.Ntlafatsa ho khomarela:
HPMC e thusa ho ntlafatsa ho khomarela, ho fella ka maqhama a matla pakeng tsa samente le substrate.Thepa ena e bohlokoa ho tšoarella le ho phela nako e telele ha bokaholimo bo felileng.
5.4.Ho boloka metsi:
Bokhoni ba ho ts'oara metsi ba HPMC bo thibela ho omisoa ha plaster pele ho nako, ho fella ka pheletso e tsitsitseng, e boreleli.Sena se bohlokoa haholo-holo libakeng tse omeletseng kapa ha ho sebetsa libakeng tse kholo, moo ho boloka maemo a mongobo a tsitsitseng ho ka bang thata.
5.5.Moralo o fapaneng:
Sebopeho se kopaneng sa plaster ena e tlanngoeng ea HPMC se e fa matla a mangata moralong le ts'ebetsong.E ka bōptjoa ka mefuta e sa tšoaneng ea libopeho le mefuta e fapaneng, e etsa hore e tšoanelehe bakeng sa mekhoa ea khale le ea morao-rao ea meralo.
ha re phethela:
Hydroxypropylmethylcellulose (HPMC) -samente e tlantsoeng e emela tsoelopele e kholo thepa ea moaho.Ka ho kopanya thepa e molemo ea HPMC le gypsum, motsoako ona o fana ka ts'ebetso e ntlafetseng, nako e telele ea ho beha, ho khomarela ho matlafatsa le ho boloka metsi.Likarolo tsena li etsa hore e be khetho e fapaneng le ea bohlokoa bakeng sa lits'ebetso tse fapaneng tsa meralo, ho kenyeletsoa likoahelo tsa marako, libotlolo le merero ea ho lokisa.Ha indasteri ea kaho e ntse e tsoela pele ho fetoha, HPMC e tlamahaneng ea gypsum plaster e hlahella e le tharollo e tšoarellang le e sebetsang hantle bakeng sa mekhoa ea sejoale-joale ea kaho.
Nako ea poso: Nov-28-2023