Hydroxypropyl methylcellulose (HPMC) ke polymer e sebetsang ka bongata e sebelisoang liindastering tse fapaneng, ho kenyeletsoa kaho. Lefapheng la plaster ea gypsum, HPMC e na le ts'ebeliso e 'maloa mme e bapala karolo ea bohlokoa ho ntlafatsa ts'ebetso le boleng ba plaster.
Ithute ka Hydroxypropyl Methylcellulose (HPMC):
1. Sebopeho sa lik'hemik'hale le thepa:
HPMC ke polima e qhibilihang ka metsing e tsoang ho selulose.
E na le thepa e ikhethang e kang ho boloka metsi, bokhoni ba ho teteka le bokhoni ba ho etsa filimi.
Sebopeho sa lik'hemik'hale sa HPMC se kenyelletsa lihlopha tsa hydroxypropyl le methoxy, tse fanang ka thepa e khethehileng ea polymer.
2. Mokhoa oa tlhahiso:
Ts'ebetso ea tlhahiso e kenyelletsa etherification ea cellulose, e bakang ho thehoa ha HPMC.
Tekanyo ea ho nkela sebaka sa hydroxypropyl le lihlopha tsa methoxy li ka etsoa ho ama thepa ea polymer.
Mokhoa oa ho sebelisa gypsum plaster:
1. Ho boloka metsi:
HPMC e sebetsa joalo ka moemeli oa ho boloka metsi mefuteng ea gypsum.
E thusa ho laola mongobo, ho thibela ho omisoa ka potlako le ho netefatsa hore ho na le hydration e ts'oanang ea likaroloana tsa gypsum.
2. Ntlafatsa ts'ebetso:
Ho eketsoa ha HPMC ho ntlafatsa ho sebetsa ha plaster ea gypsum.
E etsa hore motsoako oa samente o be bonolo le o monate o etsang hore ho be bonolo ho hasana holim'a metsi.
3. Thickener:
Joaloka moemeli oa ho teteka, HPMC e thusa ho eketsa viscosity ea motsoako oa gypsum.
Sena se thusa ka ho khomarela hamolemo libakeng tse otlolohileng le ho fokotsa ho sagging nakong ea ts'ebeliso.
4. Beha taolo ea nako:
HPMC e ama nako ea ho beha gypsum.
Tekanyo e nepahetseng e lumella nako ea ho beha nako hore e lokisoe ho fihlela litlhoko tse itseng tsa projeke.
5. Ntlafatsa ho khomarela:
Thepa ea ho etsa filimi ea HPMC e ntlafatsa ho khomarela ha gypsum plaster ho mefuta e fapaneng ea substrates.
Sena se etsa hore plaster e tšoarelle le ho tšoarella nako e telele.
6. Crack resistance:
HPMC e thusa ho ntlafatsa matla le ho feto-fetoha ha libapali.
Polymer e thusa ho fokotsa kotsi ea mapetsong, e fana ka sebaka se tsitsitseng le se setle.
7. Ho lumellana le li-additives tse ling:
HPMC e na le tumellano e ntle le li-additives tse ling tse atisang ho sebelisoa ha ho etsoa gypsum formulations.
Sena se lumella ho theha metsoako ea samente e hlophisitsoeng e ipapisitseng le litlhoko tse ikhethang tsa projeke.
Maemo a Boleng le Tataiso:
1. Litekanyetso tsa indasteri:
HPMC bakeng sa samente e khomarela litekanyetso le melao ea indasteri.
Mehato ea taolo ea boleng e netefatsa ts'ebetso e tsitsitseng le ho tšepahala.
2. Litlhahiso tsa litekanyetso:
Baetsi ba fana ka litataiso tsa litekanyetso ho latela litlhoko tse khethehileng tsa tlhahiso ea gypsum.
Tekanyo e nepahetseng e bohlokoa ho fihlela thepa e lakatsehang ntle le ho senya ts'ebetso.
Hydroxypropyl methylcellulose (HPMC) ke motsoako o ka sehloohong oa metsoako ea gypsum, e thusang ho ntlafatsa ho boloka metsi, ho sebetsa, ho khomarela le ho sebetsa ka kakaretso. Ha indasteri ea kaho e ntse e tsoela pele ho fetoha, karolo ea HPMC ho ntlafatseng boleng le katleho ea plaster ea gypsum e ntse e le ea bohlokoa haholo. Ka ho utloisisa thepa ea lik'hemik'hale le ts'ebeliso ea HPMC, litsebi tsa indasteri ea kaho li ka etsa liqeto tse bohlale ho fihlela litholoana tse ntle mererong ea bona ea ho lipola.
Nako ea poso: Jan-18-2024