Motsoako o le mong o na le meeli ea ho ntlafatsa ts'ebetso ea gypsum slurry.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 li tlameha ho kopanngoa le ho tlatselletsoa ka tsela ea mahlale le e utloahalang.
01. Coagulation regulator
Li-coagulation regulators li arotsoe haholo ka li-retarders le li-accelerator.Ka seretse se omeletseng sa gypsum, li-retarders li sebelisoa bakeng sa lihlahisoa tse lokiselitsoeng ka samente ea paris, 'me li-accelerator li hlokahala bakeng sa lihlahisoa tse lokiselitsoeng ka gypsum ea anhydrous kapa ka ho toba ho sebelisa dihydrate gypsum.
02. Morali
Ho eketsa retarder ho lisebelisoa tsa moaho tse omeletseng tsa gypsum ho thibela ts'ebetso ea hydration ea hemihydrate gypsum mme e lelefatsa nako ea ho beha.Ho na le maemo a mangata bakeng sa hydration ea samente, ho akarelletsa le karolo ea ho hlophisoa ha samente, mocheso oa samente lintho tse bonahalang ha u lokisetsa lihlahisoa, phatsa fineness, ho beha nako le pH boleng ba dihlahiswa lokiselitsoeng, joalo-joalo Ntho e 'ngoe le e 'ngoe e na le tšusumetso e itseng ho phello e liehang. , kahoo ho na le phapang e kholo ea palo ea retarder maemong a fapaneng.Hajoale, retarder e ntle bakeng sa gypsum Chaena ke protheine e fetotsoeng (protheine e phahameng) retarder, e nang le melemo ea litšenyehelo tse tlase, nako e telele ea ho lieha, tahlehelo e nyane ea matla, kaho e ntle ea sehlahisoa, le nako e telele e bulehileng.Chelete e sebelisitsoeng ho lokisoa ha plaster ea stucco e ka tlase hangata ke 0.06% ho isa ho 0.15%.
03. Coagulant
Ho potlakisa nako ea slurry e susumetsang le ho lelefatsa lebelo la ho sisinyeha ha slurry ke e 'ngoe ea mekhoa ea ho potlakisa ha 'mele.Li-coagulants tsa lik'hemik'hale tse sebelisoang hangata ka thepa ea kaho ea phofo ea anhydrite li kenyelletsa potassium chloride, silicate ea potasiamo, sulfate le lintho tse ling tsa acid.Ka kakaretso, litekanyetso li tsoa ho 0.2% ho isa ho 0.4%.
04. Moemeli oa ho boloka metsi
Lisebelisoa tsa ho haha motsoako o omileng oa Gypsum ha o arohane le baemeli ba bolokang metsi.Ho ntlafatsa sekhahla sa ho boloka metsi sa gypsum product slurry ke ho netefatsa hore metsi a ka ba teng ka har'a gypsum slurry nako e telele, e le ho fumana phello e ntle ea ho thatafatsa metsi.Ho ntlafatsa moaho oa thepa ea kaho ea phofo ea gypsum, ho fokotsa le ho thibela karohano le ho tsoa mali ha gypsum slurry, ho ntlafatsa ho sisinyeha ha slurry, ho lelefatsa nako ea ho bula, le ho rarolla mathata a boleng ba boenjiniere joalo ka ho petsoha le ho phunya, kaofela ha li arohane le li-agents tse bolokang metsi.Ho sa tsotellehe hore na mochine o bolokang metsi o loketse ho itšetlehile haholo ka ho qhalana ha oona, ho qhibiliha hang-hang, ho bōptjoa, botsitso ba mocheso le thepa e teteaneng, eo har'a eona index ea bohlokoa ka ho fetisisa e leng ho boloka metsi.
Ho na le mefuta e mene ea lisebelisoa tse bolokang metsi:
①Cellulosic e bolokang metsi
Hajoale, e sebelisoang haholo 'marakeng ke hydroxypropyl methylcellulose, e lateloe ke methyl cellulose le carboxymethyl cellulose.Kakaretso ea ts'ebetso ea hydroxypropyl methylcellulose e molemo ho feta ea methylcellulose, 'me ho bolokoa ha metsi ho tse peli ho feta carboxymethylcellulose, empa phello e teteaneng le phello ea tlamahano e mpe ho feta ea carboxymethylcellulose.Ka thepa ea moaho e tsoakiloeng ea gypsum, palo ea hydroxypropyl le methyl cellulose hangata ke 0.1% ho isa ho 0.3%, 'me palo ea carboxymethyl cellulose ke 0.5% ho isa ho 1.0%.Palo e kholo ea mehlala ea ts'ebeliso e paka hore ts'ebeliso e kopaneng ea tse peli e molemo.
② Setsi sa ho boloka metsi a starch
Setsi sa ho boloka metsi sa starch se sebelisoa haholo-holo bakeng sa gypsum putty le plaster plaster, 'me se ka nka sebaka sa karolo kapa tsohle tse bolokang metsi a cellulose.Ho kenyelletsa ntho e bolokang metsi e thehiloeng ho starch ho thepa ea kaho ea phofo e omeletseng ea gypsum ho ka ntlafatsa ts'ebetso, ts'ebetso le ts'ebetso ea slurry.Lintho tse sebelisoang ka tloaelo ho boloka metsi tse thehiloeng ho starch li kenyelletsa tapioca starch, pregelatinized starch, carboxymethyl starch le carboxypropyl starch.Palo ea sets'oants'o sa ho boloka metsi se thehiloeng ho starch hangata ke 0.3% ho isa ho 1%.Haeba chelete e ngata haholo, e tla baka hlobo ea lihlahisoa tsa gypsum sebakeng se mongobo, se tla ama ka ho toba boleng ba morero.
③ Sekhomaretsi se bolokang metsi
Likhomaretsi tse ling hang hang li ka bapala karolo e ntle ea ho boloka metsi.Mohlala, 17-88, 24-88 polyvinyl alcohol powder, Tianqing gum le guar gum li sebelisoa ka thepa ea moaho e tsoakiloeng ea gypsum joalo ka gypsum, gypsum putty, le gypsum insulation glue.E ka fokotsa palo ea selulose e bolokang metsi.Haholo-holo ka gypsum e kopanyang ka potlako, e ka nkela sebaka sa cellulose ether se bolokang metsi ka ho feletseng maemong a mang.
④ Lisebelisoa tsa ho boloka metsi ka tlhaho
Ts'ebeliso ea ho kopanya lisebelisoa tse ling tse bolokang metsi ka thepa ea moaho e tsoakiloeng ka gypsum e ka fokotsa bongata ba lisebelisoa tse ling tse bolokang metsi, ea fokotsa litšenyehelo tsa sehlahisoa, hape ea bapala karolo e itseng ho ntlafatsa ts'ebetso le ho aha ha gypsum slurry.Lisebelisoa tse sebelisoang ka mokhoa o tloaelehileng tse bolokang metsi li kenyelletsa bentonite, kaolin, lefatše la diatomaceous, phofo ea zeolite, phofo ea perlite, letsopa la attapulgite, joalo-joalo.
05.Sekgomaretsi
Tšebeliso ea li-adhesive ka thepa ea mohaho e omeletseng ea gypsum ke ea bobeli feela ho li-agent tse bolokang metsi le li-retarders.Seretse se ikemetseng sa gypsum, gypsum e tlanngoeng, gypsum ea caulking, le sekhomaretsi sa gypsum se futhumatsang mocheso kaofela ha li arohane le likhomaretsi.
▲ phofo ea latex e ka qhaloang hape
Redispersible latex powder e sebelisoa haholo ka seretse sa gypsum self-leveling, gypsum insulation compound, gypsum caulking putty, joalo-joalo Haholo-holo ka gypsum self-leveling seretse, e ka ntlafatsa viscosity le fluidity ea slurry, hape e phetha karolo e kholo ho fokotsa. delamination, ho qoba ho tsoa mali, le ho ntlafatsa ho hanyetsa mapheo.Ka kakaretso, tekanyo ke 1.2% ho 2.5%.
▲ joala ba polyvinyl hang-hang
Hona joale, joala ba polyvinyl hang-hang bo sebelisoang ka bongata 'marakeng ke 24-88 le 17-88.Hangata e sebelisoa lihlahisoa tse kang bonding gypsum, gypsum putty, gypsum composite thermal insulation compound, le plastering plaster.0.4% ho isa ho 1.2%.
Guar gum, Tianqing gum, carboxymethyl cellulose, starch ether, joalo-joalo ke likhomaretsi tse nang le mesebetsi e fapaneng ea ho kopanya linthong tsa mohaho tse omeletseng tsa gypsum.
06. Thickener
Ho tiisa haholo-holo ho ntlafatsa ts'ebetso le ho fokotseha ha gypsum slurry, e ts'oanang le li-adhesives le lisebelisoa tse bolokang metsi, empa eseng ka ho feletseng.Lihlahisoa tse ling tsa thickener li sebetsa hantle ka ho teteaneng, empa ha li ntle ho latela matla a kopanetsoeng le ho boloka metsi.Ha ho etsoa thepa ea ho haha gypsum phofo e omeletseng, karolo e ka sehloohong ea li-admixtures e lokela ho nahanoa ka botlalo e le hore ho sebelisoe li-admixtures hantle le ka mokhoa o utloahalang.Lihlahisoa tse sebelisoang hangata li kenyelletsa polyacrylamide, Tianqing gum, guar gum, carboxymethyl cellulose, joalo-joalo.
07. Moemeli oa ho kenya moea
Air-entraining agent, eo hape e tsejoang e le foaming agent, e sebelisoa haholo-holo linthong tsa moaho tse tsoakiloeng ka gypsum joalo ka motsoako oa gypsum insulation and plaster plaster.Air-entraining agent (foaming agent) e thusa ho ntlafatsa kaho, ho hanyetsa mapheo, ho hanyetsa serame, ho fokotsa ho tsoa mali le ho arohana, 'me tekanyo ea kakaretso ke 0.01% ho ea ho 0.02%.
08. Defoamer
Hangata Defoamer e sebelisoa ka seretse sa gypsum self-leveling le gypsum caulking putty, se ka ntlafatsang letsoalo, matla, ho hanyetsa metsi le ho kopana ha slurry, 'me tekanyo ea kakaretso ke 0.02% ho 0.04%.
09. Moemeli oa ho fokotsa metsi
Moemeli oa ho fokotsa metsi o ka ntlafatsa ho phalla ha gypsum slurry le matla a 'mele o thata oa gypsum,' me hangata o sebelisoa ho seretse se ikemetseng sa gypsum le samente sa plaster.Hona joale, lisebelisoa tse fokotsang metsi tse hlahisoang malapeng li behiloe ho ea ka matla a tsona a metsi le matla a tsona: li-polycarboxylate tse fokotsang metsi tse sa sebetseng hantle, tse fokotsang metsi tse sebetsang hantle ka melamine, tse fokotsang metsi ka lebaka la tee, le tse fokotsang metsi a lignosulfonate.Ha u sebelisa lisebelisoa tsa ho fokotsa metsi ka thepa ea mohaho ea gypsum e omeletseng, ntle le ho nahana ka tšebeliso ea metsi le matla, tlhokomelo e boetse e lokela ho lefshoa ho nako ea ho beha le ho lahleheloa ke metsi a thepa ea mohaho oa gypsum ka nako.
10. Moemeli oa ho thibela metsi
Bothata bo boholo ka ho fetisisa ba lihlahisoa tsa gypsum ke ho se tsitse ha metsi.Libaka tse nang le mongobo o phahameng oa moea li na le litlhoko tse phahameng tsa ho hanyetsa metsi ka seretse se omileng sa gypsum.Ka kakaretso, khanyetso ea metsi ea gypsum e thata e ntlafatsoa ka ho eketsa metsoako ea hydraulic.Tabeng ea metsi a metsi kapa a tletseng metsi, tlatsetso e ka ntle ea li-hydraulic admixtures e ka etsa hore coefficient e nolofatsang ea 'mele o thata oa gypsum o fihle ho feta 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 ata ha gypsum ho metsi (ke hore, ho fokotsa sekhahla sa ho kenngoa ha metsi) le ho fokotsa khoholeho ea 'mele o thata oa gypsum (ke hore , ho itšehla thajana).Lisebelisoa tsa Gypsum tse thibelang metsi li kenyelletsa ammonium borate, sodium methyl siliconate, resin ea silicone, boka ba parafine e entsoeng ka emulsified, le silicone emulsion e thibelang metsi e nang le phello e molemo.
11. Sehlahisoa se sebetsang
Ts'ebetso ea li-anhydrite tsa tlhaho le tsa lik'hemik'hale li fana ka ho khomarela le matla bakeng sa tlhahiso ea thepa ea mohaho ea gypsum e omeletseng.Acivator ea asiti 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.The activator ea mantlha e na le phello e nyane ho sekhahla sa pele sa hydration sa gypsum ea anhydrous, empa e ka ntlafatsa haholo matla a morao-rao a 'mele o thata oa gypsum,' me e ka ba karolo ea lisebelisoa tsa hydraulic gelling 'meleng o thata oa gypsum, ka katleho e ntlafatsa ho hanyetsa metsi. gypsum e thatafatsa thobalano ya mmele.Tšebeliso ea phello ea acid-base compound activator e molemo ho feta ea acidic e le 'ngoe kapa ea motheo ea activator.Li-acid tse susumetsang li kenyelletsa potassium alum, sodium sulfate, potassium sulfate, joalo-joalo. Li-activator tsa alkaline li kenyelletsa quicklime, samente, clinker ea samente, calcined dolomite, joalo-joalo.
12. Setlolo sa Thixotropic
Lisebelisoa tsa Thixotropic li sebelisoa ka gypsum ea ho ikemela kapa gypsum ea plastering, e ka fokotsang ho hanyetsa ho phalla ha seretse sa gypsum, ho lelefatsa nako e bulehileng, ho thibela lera le ho rarolla slurry, e le hore slurry e ka fumana lubricity e ntle le ho sebetsa hantle.Ka nako e ts'oanang, sebopeho sa 'mele se tšoana,' me matla a eona a holim'a metsi a eketseha.
Nako ea poso: Apr-20-2023