Ho na le meeli ea ho ntlafatsa ts'ebetso ea gypsum paste ka motsoako o le mong. Haeba ts'ebetso ea seretse sa gypsum e le ho fihlela sephetho se khotsofatsang le ho fihlela litlhoko tse fapaneng tsa ts'ebeliso, metsoako ea lik'hemik'hale, li-admixtures, li-filler le lisebelisoa tse fapaneng lia hlokahala ho kopanya le ho tlatsana ka saense le ka mokhoa o utloahalang.
1. The coagulant
Regulating coagulant haholo-holo arotsoe ka retarder le coagulant. Ka gesso dry mix mortar, sehlahisoa se sebelisang gesso e phehiloeng ho etsa lisebelisuoa tsohle tse liehang ho kopanya, sebelisa anhydrous gesso kapa sehlahisoa se sebelisang 2 metsi gesso ho etsa ka ho toba se hloka ho khothalletsa moemeli oa coagulate.
2. Retare
Ka ho kenyelletsa retarder ho lisebelisoa tsa moaho tse omeletseng tsa gypsum, ts'ebetso ea hydration ea semi-hydrous gypsum e ea thibeloa mme nako ea ho tiisa e ea lelefala. Maemo a hydration a plaster ea gypsum a fapane, ho kenyelletsa sebopeho sa karolo ea plaster ea gypsum, mocheso oa thepa ea gypsum, botle ba likaroloana, nako ea ho beha le boleng ba pH ba sehlahisoa se felileng. Ntho e 'ngoe le e' ngoe e na le tšusumetso e itseng ho phello ea ho lieha, kahoo ho na le phapang e kholo palo ea moemeli oa ho lieha tlas'a maemo a fapaneng. Hajoale, gypsum special retarder e betere ke metamorphic protheine (protheine e phahameng) retarder, e na le melemo ea litšenyehelo tse tlase, nako e telele ea ho khutlisa, tahlehelo e nyane ea matla, kaho e ntle, nako e telele ea ho bula joalo-joalo. Ka mofuta o ka tlase oa stucco gypsum ho lokisetsa chelete ka kakaretso ke 0.06% ~ 0.15%.
3. The coagulant
Ho potlakisa nako e susumetsang ea slurry le ho lelefatsa lebelo le susumetsang la slurry ke e 'ngoe ea mekhoa ea' mele ea ho khothalletsa ho kopana. Li-coagulants tsa lik'hemik'hale tse sebelisoang hangata ho thepa ea kaho ea gypsum ea anhydrous ke potassium chloride, silicate ea potasiamo, sulfate le li-acid tse ling. Ka kakaretso, tekanyo ke 0.2% ~ 0.4%.
4. Moemeli oa ho boloka metsi
Lisebelisoa tsa ho haha Gesso dry mix ha li khone ho tloha ho sireletsa moemeli oa metsi. Ho ntlafatsa sekhahla sa ho boloka metsi sa gypsum sehlahisoa slurry ke ho netefatsa hore metsi a ka ba teng ka har'a gypsum slurry nako e telele e le ho fumana hydration e ntle le phello e thata. Ho ntlafatsa mokhoa oa ho haha lisebelisoa tsa kaho ea phofo ea gypsum, ho fokotsa le ho thibela ho arohana le ho tsoa mali ha gypsum slurry, ho ntlafatsa phallo ea slurry e leketlileng, ho lelefatsa nako ea ho bula, ho rarolla mathata a boleng ba boenjiniere a kang ho phunyeha le moqomo o se nang letho ha o arohane le moemeli oa ho boloka metsi. Ho sa tsotellehe hore na mochine o bolokang metsi o loketse ho itšetlehile haholo ka ho qhalana ha oona, ho qhibiliha ka potlako, ho bōpa, ho tsitsisa mocheso le ho teteaneng, har'a moo ho boloka metsi e leng index ea bohlokoa ka ho fetisisa.
Cellulose ether e bolokang metsi
Hajoale, hydroxypropyl methyl cellulose ke eona e sebelisoang haholo 'marakeng, e lateloe ke methyl cellulose, le carboxymethyl cellulose. Thepa e felletseng ea hydroxypropyl methyl cellulose e betere ho feta methyl cellulose. Palo ea metsi ea hydroxypropyl methyl cellulose e phahame haholo ho feta ea carboxymethyl cellulose, empa phello e teteaneng le phello ea tlamahano e mpe ho feta ea carboxymethyl cellulose. Ka thepa ea moaho e omeletseng ea gypsum, palo ea hydroxypropyl le methyl cellulose e ka har'a 0.1% ~ 0.3%, mme palo ea carboxymethyl cellulose e maemong a 0.5% ~ 1.0%.
Setsi sa ho boloka metsi ka starch
Mofuta oa starch o sireletsa moemeli oa metsi ha e le hantle o sebelisoa ho gesso be putty in child, face layer model stucco gesso, e ka nka sebaka sa mofuta o itseng kapa o felletseng oa cellulose o sireletsa moemeli oa metsi. Ho sebetsa, ho aha le ho tsitsa ha seretse ho ka ntlafatsoa ka ho eketsa sets'oants'o sa metsi sa starch ho thepa ea moaho e omeletseng ea gypsum. Lihlahisoa tse sebelisoang ka tloaelo tse bolokang metsi ke "cassava starch", pre gelatinized starch, carboxymethyl starch, carboxypropyl starch. Mofuta oa starch o sireletsa tekanyo ea moemeli oa metsi ho ba 0.3% ~ 1% hangata, haeba litekanyetso li le kholo haholo ho kopana ho etsa hore sehlahisoa sa gesso se hlahise ketsahalo ea hlobo e ka tlase ho tikoloho e mongobo, e ama boleng ba morero ka kotloloho.
③ Mofuta oa sekhomaretsi o bolokang metsi
Likhomaretsi tse ling hang-hang le tsona li ka bapala karolo e betere ho bolokeng metsi. Joalo ka 17-88, 24-88 phofo ea joala ea polyvinyl, gomunu e tala le guar gum e sebelisetsoang ho kopanya gypsum, gypsum putty, sekhomaretsi sa gypsum insulation le lisebelisoa tse ling tsa moaho tse omeletseng tsa gypsum, ka tekanyo e itseng, li ka fokotsa palo ea sesebelisoa sa ho boloka metsi a cellulose. Haholo-holo ka gypsum e khomarelang ka potlako, e ka nka sebaka sa ether ea cellulose maemong a mang.
(4) Lisebelisoa tsa ho boloka metsi ka tlhaho
Tšebeliso ea lisebelisoa tse ling tse bolokang metsi ka har'a thepa ea moaho e omeletseng ea gypsum e ka fokotsa bongata ba lisebelisoa tse ling tse bolokang metsi, ea fokotsa litšenyehelo tsa lihlahisoa, le ho ntlafatsa ts'ebetso le ho aha ha gypsum slurry. Lisebelisoa tse sebelisoang ka tloaelo ho boloka metsi ke bentonite, kaolin, diatomite, phofo ea zeolite, phofo ea perlite, letsopa la attapulgite, joalo-joalo.
5. Sekgomaretsi
Ts'ebeliso ea sekhomaretsi ka thepa ea moaho e omeletseng ea gypsum e tlase feela ho e bolokang metsi le retarder. Gesso self leveling seretse, sekhomaretsi gesso, caulking gesso, ho boloka mocheso gesso glue e ke ke ea siea sekhomaretsi.
Redispersible latex phofo:
Redispersible latex powder e sebelisoa haholo seretseng sa gypsum self-leveling, gypsum insulation glue, gypsum caulking putty joalo-joalo. Haholo-holo ka seretse se ikemetseng sa gypsum, se ka etsa hore slurry viscidity, fluidity e ntle, ho fokotsa stratification, ho qoba ho tsoa mali, ho ntlafatsa ho hanyetsa ha crack joalo-joalo ho boetse ho phetha karolo e kholo. Tšebeliso hangata ke 1.2% ~ 2.5%.
Joala ba polyvinyl hanghang:
Hajoale, joala ba polyvinyl bo qhibilihisitsoeng hang-hang bo nang le litekanyetso tse ngata 'marakeng ke 24-88, 17-88 sehlahisoa sa mefuta e' meli, e atisang ho sebelisoa sekhomaretsing sa sekhomaretsi, gesso, sekhomaretsi sa gesso se sireletsang mocheso, sekhomaretsi sa stucco le lihlahisoa tse ling. ka 0.4% ~ 1.2% hangata.
Guar gum, gelatin ea masimong, carboxymethyl cellulose, starch ether joalo-joalo ke likhomaretsi tse nang le mesebetsi e fapaneng ea ho kopanya thepa ea moaho e omeletseng ea gypsum.
6. Thickener
Thickening haholo-holo ho ntlafatsa workability le fluidity ea gypsum slurry, e tšoanang le sekgomaretsi le metsi ho boloka moemeli, empa eseng ka ho feletseng. Sehlahisoa se seng sa motenya se setle molemong oa ho tiisa tlhompho, empa tlhompho ha e ea nepahala ka matla a kopaneng, sekhahla sa ho boloka metsi. Ha ho etsoa thepa ea ho haha gypsum phofo e omeletseng, phello e ka sehloohong ea motsoako o lokela ho nkoa ka botlalo e le ho sebelisa motsoako o motle le o utloahalang haholoanyane. Lihlahisoa tse sebelisoang ka mokhoa o tloaelehileng ke polyacrylamide, gum e tala, guar gum, carboxymethyl cellulose.
7. Moemeli oa ho kenya moea
Air entraining agent e boetse e tsejoa e le foaming agent, e sebelisoang haholo ho sekhomaretsi sa gypsum insulation, plaster plaster le lisebelisoa tse ling tsa moaho tse omeletseng tsa gypsum. Moemeli oa ho kenya moea (moemeli oa ho foaming) o thusa ho ntlafatsa kaho, ho hanyetsa ho phatloha, ho hanyetsa serame, ho fokotsa ts'ebetso ea ho tsoa mali le karohano, tekanyo ea kakaretso ke 0.01% ~ 0.02%.
8. Moemeli oa ho tlosa lekoba
Defoaming agent e atisa ho sebelisoa ho gesso self-leveling seretse, gesso caulking be putty in, e ka phahamisa boima ba lintho tse bonahalang, matla, ho hanyetsa metsi, ho etsa thobalano, tekanyo e ka 0.02% ~ 0.04% hangata.
9. Moemeli oa ho fokotsa metsi
Ho fokotsa metsi ho ka ntlafatsa metsi a gesso slurry le matla a 'mele a thatafalang, hangata ho gesso self leveling mortar, stucco gesso. Hajoale, sesebelisoa se fokotsang metsi a lapeng ke polycarboxylic acid e fokotsang metsi, melamine e fokotsang metsi e sebetsang hantle haholo, sistimi ea tee e nang le ts'ebetso e phahameng ea ho fokotsa metsi, lignosulfonate e fokotsang metsi ho latela mokelikeli le matla a matla. Ntle le tšebeliso ea metsi le matla, hoa hlokahala ho ela hloko nako ea ho beha le ho lahleheloa ke metsi a thepa ea ho haha gypsum ha u sebelisa sesebelisoa sa ho fokotsa metsi ka thepa ea mohaho e omileng ea gypsum.
10. Moemeli oa ho thibela metsi
Bothata bo boholo ka ho fetisisa ba lihlahisoa tsa gypsum ke ho thibela metsi ho futsanehileng. Sebaka se nang le mongobo o moholo oa moea se na le litlhoko tse phahameng tsa ho hanyetsa metsi bakeng sa seretse se omileng sa gypsum. Ka kakaretso, khanyetso ea metsi ea 'mele o thata oa gypsum e ntlafatsoa ka ho eketsa motsoako oa hydraulic. Tlas'a boemo ba metsi a metsi kapa a tletseng metsi, coefficient e bonolo ea 'mele o thata oa gypsum e ka fihla ho 0.7, e le ho finyella litlhoko tsa matla a sehlahisoa. Metsoako ea lik'hemik'hale e ka boela ea sebelisoa ho fokotsa ho qhibiliha ha gypsum (ke hore, ho eketsa coefficient e nolofatsang), ho fokotsa ho kenngoa ha gypsum metsing (ke hore, ho fokotsa ho kenngoa ha metsi) le ho fokotsa khoholeho ea 'mele o thata oa gypsum (ke hore, metsi). isolation) tsela ea ho hana metsi. Moemeli o sa keneleng metsi oa Gypsum o na le ammonium borate, methyl sodium silicate, resin ea silicone, boka ba mesaletsa ea lebese, phello e betere le silicone emulsion e thibelang metsi.
11. Sesebelisoa se sebetsang
Gypsum ea tlhaho le ea lik'hemik'hale ea anhydrous e ka sebelisoa ho etsa hore e khomarele ebile e le matla, e le hore e tšoanelehe bakeng sa tlhahiso ea lisebelisoa tsa mohaho tse omeletseng tsa gypsum. Acid activator e ka potlakisa sekhahla sa hydration ea anhydrous gypsum, ea khutsufatsa nako ea ho beha le ho ntlafatsa matla a pele a 'mele o thata oa gypsum. Alkaline activator e na le phello e fokolang ho tekanyo ea pele ea hydration ea anhydrous gypsum, empa ho hlakile hore e ka ntlafatsa matla a morao-rao a 'mele o thata oa gypsum,' me e ka ba karolo ea lisebelisoa tsa hydraulic cementing 'meleng o thata oa gypsum, o ntlafatsang ka katleho ho hanyetsa metsi a' mele o thata oa gypsum. . Matla a ts'ebeliso ea acid-base compound activator e betere ho feta ea acid e le 'ngoe kapa activator ea mantlha. Li-activators tsa acid li kenyelletsa potassium alum, sodium sulfate, sulfate ea potasiamo joalo-joalo. Li-activator tsa alkaline li kenyelletsa li-quicklime, samente, clinker ea samente, dolomite ea calcined joalo-joalo.
setlolo sa Thixotropic
Lubricant ea Thixovariable e sebelisoa ho gypsum ea ho ikemela kapa gypsum ea stuccoing, e ka fokotsang ho hanyetsa ho phalla ha seretse sa gypsum, ho lelefatsa nako ea ho bula, ho thibela stratification le ho rarolloa ha slurry, e le ho etsa hore slurry e fumane lubricity e ntle le kaho, ha e ntse e etsa sebopeho sa 'mele se thatafalitsoeng, se eketsa matla a sona holim'a metsi.
Nako ea poso: May-25-2022