Enwere oke n'ịkwalite arụmọrụ nke tapawa gypsum site na otu admixture.Ọ bụrụ na arụ ọrụ nke ngwa agha gypsum bụ iji nweta nsonaazụ na-eju afọ ma zute ngwa ngwa dị iche iche, ihe mgbakwunye kemịkalụ, ihe mgbakwunye, ihe ndozi na ihe dị iche iche dị mkpa iji mejupụta ma kwado ibe ha na sayensị na ezi uche.
1. The coagulant
A na-ekewa usoro nhazi coagulant ka ọ bụrụ retarder na coagulant.N'ime gesso dry mix mortar, ngwaahịa na-eji gesso esichara emecha ihe niile na-eji egbugbere ọnụ coagulate agents, jiri anhydrous gesso ma ọ bụ ngwaahịa na-eji gesso 2 mmiri na-eme ka ọ bụrụ ihe na-eme ka ọ dị mkpa ịkwalite ndị na-ahụ maka coagulate.
2. Retarder
Site n'ịgbakwunye retarder na gypsum akọrọ akọrọ ihe ụlọ, a na-egbochi usoro hydration nke gypsum ọkara-hydrous ma na-agbatịkwu oge.Ọnọdụ hydration nke plasta gypsum dị iche iche, gụnyere usoro nhazi nke plasta gypsum, okpomọkụ nke ihe gypsum, mma nke mma, nhazi oge na pH uru nke ngwaahịa emechara.Ihe ọ bụla nwere mmetụta ụfọdụ na mmetụta nke retarding, ya mere enwere nnukwu ọdịiche dị na ọnụọgụ nke onye na-azụ ahịa n'okpuru ọnọdụ dị iche iche.Ka ọ dị ugbu a, mma ụlọ gypsum pụrụ iche retarder bụ protein metamorphic (protein dị elu) retarder, ọ nwere uru nke ọnụ ala dị ala, ogologo oge retarder, obere ike ọnwụ, ezigbo ihe owuwu, ogologo oge mmeghe na ihe ndị ọzọ.Na ala ụdị stucco gypsum nkwadebe ego bụ n'ozuzu na 0.06% ~ 0.15%.
3. The coagulant
Ịkwalite oge mkpali nke slurry na ịgbatị ọsọ na-akpali akpali nke slurry bụ otu n'ime ụzọ anụ ahụ iji kwalite coagulation.Ihe nkpuchi kemịkalụ a na-ejikarị eme ihe na gypsum ntụ ntụ anhydrous bụ potassium chloride, potassium silicate, sulfate na acid ndị ọzọ.Usoro onunu ogwu bụ n'ozuzu 0.2% ~ 0.4%.
4. Onye na-ejigide mmiri
Ngwakọta ihe eji arụ ụlọ Gesso kpọrọ nkụ enweghị ike ịhapụ onye na-echebe mmiri.Iji meziwanye ọnụego njigide mmiri nke gypsum ngwaahịa slurry bụ iji hụ na mmiri nwere ike ịdị na gypsum slurry ruo ogologo oge iji nweta ezigbo hydration na mmetụta siri ike.Imeziwanye nrụpụta nke ihe eji ewu ụlọ gypsum ntụ ntụ, ibelata na igbochi ikewapụ na ọbara ọgbụgba nke gypsum slurry, melite slurry eruba nghọta, ịgbatị oge mmeghe, idozi nsogbu nke injinia dị ka ịgbawa na ịgbà efu enweghị ikewapụ ya na onye na-ejigide mmiri.Ma mmiri na-ejigide gị n'ụlọnga na-adabere tumadi na ya dispersibility, ngwa ngwa solubility, ịkpụzi, thermal kwụsie ike na ndim, n'ime nke mmiri njigide bụ ihe kasị mkpa index.
Cellulose ether onye na-ejigide mmiri
Ka ọ dị ugbu a, hydroxypropyl methyl cellulose bụ nke a na-ejikarị eme ihe n'ahịa, methyl cellulose na-esote, na carboxymethyl cellulose.Njirimara zuru oke nke hydroxypropyl methyl cellulose dị mma karịa methyl cellulose.Njide mmiri nke hydroxypropyl methyl cellulose dị elu karịa nke carboxymethyl cellulose, mana mmetụta na-eme ka ọ dị arọ na mmetụta njikọ dị njọ karịa nke carboxymethyl cellulose.Na gypsum akọrọ agwakọta ihe ụlọ, ego nke hydroxypropyl na methyl cellulose dị na nso nke 0.1% ~ 0.3%, na ego nke carboxymethyl cellulose bụ na nso nke 0.5% ~ 1.0%.
Onye na-ejigide mmiri starch
Ụdị starch na-echebe onye na-ahụ maka mmiri n'ụzọ bụ isi na-eji na gesso be putty in child, face Layer model stucco gesso, nwere ike dochie anya akụkụ ma ọ bụ mkpokọta cellulose ụdị na-echebe mmiri.Enwere ike imeziwanye arụmọrụ, nrụpụta na ịdịgidesi ike nke slurry site n'ịgbakwunye ihe na-ejigide mmiri starch na gypsum nkụ.Ngwaahịa starch na-ejigide mmiri nke a na-ejikarị bụ starch akpu, starch nke gelatinized, starch carboxymethyl, starch carboxypropyl.Ụdị starch na-echebe usoro onunu ogwu ka ọ bụrụ 0.3% ~ 1% na-emekarị, ọ bụrụ na usoro onunu ogwu dị oke nnukwu nzukọ na-eme ka ngwaahịa gesso na-emepụta ọdịdị mildew n'okpuru ebe mmiri na-ekpo ọkụ, na-emetụta àgwà ọrụ ozugbo.
③ Ihe nkpuchi mmiri na-ejigide ụdị gluu
Ụfọdụ nrapado ozugbo nwekwara ike ịrụ ọrụ ka mma na njide mmiri.Dị ka 17-88, 24-88 polyvinyl mmanya ntụ ntụ, green chịngọm na guar chịngọm eji maka bonding gypsum, gypsum putty, gypsum mkpuchi gluu na ndị ọzọ gypsum akọrọ agwakọta ihe ụlọ, na a ụfọdụ ego nke ikpe, nwere ike ibelata ego. ihe na-ejide mmiri cellulose.Karịsịa na gypsum na-arapara ngwa ngwa, ọ nwere ike dochie cellulose ethers n'ọnọdụ ụfọdụ.
(4) Ihe eji echekwa mmiri na-adịghị ahụ
Ngwa nke ihe ndị ọzọ na-eme ka mmiri dị na gypsum akọrọ akọrọ nwere ike ibelata ọnụ ọgụgụ nke ihe ndị ọzọ na-ejigide mmiri, belata ọnụ ahịa ngwaahịa, ma melite arụmọrụ na ịrụ ọrụ nke gypsum slurry.Ihe eji ejide mmiri inorganic nke a na-ejikarị eme ihe bụ bentonite, kaolin, diatomite, zeolite powder, perlite powder, attapulgite ụrọ, wdg.
5. Nrapado
Ngwa nke nrapado na gypsum akọrọ akọrọ ihe eji ewu ụlọ dị ala naanị na mmiri na-ejigide ihe na retarder.Gesso onwe larịị ngwa agha, nrapado gesso, caulking gesso, okpomọkụ nchekwa gesso gluu enweghị ike ịhapụ ihe nrapado.
Uzuzu latex nwere ike agbasa:
A na-eji ntụ ntụ latex na-emegharị emegharị eme ihe n'ọtụtụ ebe na gypsum onwe-leveling ngwa agha, gypsum mkpuchi gluu, gypsum caulking putty na ndị ọzọ.Karịsịa na gypsum onwe-leveling ngwa agha, ọ nwere ike ime ka slurry viscidity, ezi fluidity, iji belata stratification, zere ọbara ọgbụgba, melite mgbape eguzogide na na nwekwara ike na-ekere òkè dị ukwuu.Ojiji bụ n'ozuzu 1.2% ~ 2.5%.
Mmanya polyvinyl ozugbo:
Ka ọ dị ugbu a, mmanya polyvinyl agbazere ngwa ngwa nwere usoro onunu ogwu n'ahịa bụ 24-88, 17-88 ngwaahịa nke ụdị abụọ, nke a na-ejikarị na plasta nrapado, gesso, gluu na-echekwa okpomọkụ gesso, plasta stucco na ngwaahịa ndị ọzọ, usoro onunu ogwu bụ. na 0.4% ~ 1.2% nkịtị.
Guar gum, Gelatin ubi, carboxymethyl cellulose, starch ether na ndị ọzọ bụ adhesives nwere ọrụ njikọ dị iche iche na gypsum akọrọ ihe ụlọ agwakọta.
6. Ọkpụkpụ
Ọkpụkpụ bụ tumadi iji melite workability na fluidity nke gypsum slurry, nke yiri nrapado na mmiri na-ejigide gị, ma ọ bụghị kpamkpam.Ụfọdụ ngwaahịa ndị na-emepụta ihe na-eme ka ọ dị mma na mmetụta nkwanye ùgwù na-ebuwanye ibu, mana nkwanye ùgwù adịghị mma na ike jikọrọ ọnụ, ọnụego njide mmiri.Mgbe ị na-eme gypsum akọrọ ntụ ntụ ihe ụlọ, a ga-atụle isi mmetụta nke admixture n'ụzọ zuru ezu ka itinye admixture mma na nke ọma.Ngwaahịa thickener a na-ejikarị bụ polyacrylamide, chịngọm green, guar gum, carboxymethyl cellulose.
7. Onye na-ahụ maka ikuku
A na-akpọkwa ụlọ ọrụ ntinye ikuku dị ka onye na-agbapụta ụfụfụ, nke a na-ejikarị na gluu mkpuchi gypsum, plasta plasta na ihe ndị ọzọ gypsum akọrọ.Onye na-ahụ maka ikuku ikuku (onye na-afụ ụfụfụ) na-enyere aka imeziwanye ihe owuwu, nkwụsị mgbape, nkwụsị ntu oyi, belata ọbara ọgbụgba na ihe dị iche iche, usoro ọgwụgwọ na-adịkarị na 0.01% ~ 0.02%.
8. Defoaming gị n'ụlọnga
A na-ejikarị ngwa ngwa gesso na-emezigharị onwe ya, gesso caulking be putty in, nwere ike ibuli njupụta nke pulp ihe, ike, mmiri na-eguzogide mmiri, mmekọahụ caking, usoro onunu ogwu dị na 0.02% ~ 0.04% ọtụtụ.
9. Onye na-ebelata mmiri
Mbelata mmiri na-arụ ọrụ nwere ike melite gesso slurry fluidity na gesso hardening ahụ ike, na-emekarị na gesso self leveling mortar, stucco gesso.Ka ọ dị ugbu a, onye na-ebelata mmiri nke ụlọ bụ polycarboxylic acid retarding mmiri na-ebelata ihe, melamine na-ebelata mmiri na-arụ ọrụ nke ọma, sistemu tii na-ebelata mmiri na-ebelata mmiri, onye na-ebelata mmiri lignosulfonate dị ka mmụba na ike mmetụta.Na mgbakwunye na oriri mmiri na ike, ọ dị mkpa ịṅa ntị na nhazi oge na nkwụsịtụ mmiri nke ihe owuwu ụlọ gypsum mgbe ị na-eji mmiri na-ebelata mmiri na gypsum akọrọ ihe ụlọ.
10. Onye na-ekpuchi mmiri
Nnukwu ntụpọ nke ngwaahịa gypsum bụ mmiri na-adịghị mma.Mpaghara nwere iru mmiri buru ibu nwere ihe nguzogide mmiri dị elu maka ngwa ngwa agwakọta gypsum kpọrọ nkụ.N'ozuzu, a na-eme ka nguzogide mmiri nke gypsum siri ike na-eme ka ọ dịkwuo mma site n'ịgbakwunye admixture hydraulic.N'okpuru ọnọdụ mmiri ma ọ bụ juputara na mmiri, ọnụọgụ dị nro nke gypsum siri ike ahụ nwere ike iru 0.7, iji mezuo ihe achọrọ nke ike ngwaahịa.A pụkwara iji kemịkalụ admixtures belata solubility nke gypsum (ya bụ, ịbawanye ọnụ ọgụgụ dị nro), belata mmịpụta nke gypsum na mmiri (ya bụ, ibelata mmịnye mmiri) ma belata mbuze nke gypsum siri ike (ya bụ, mmiri). iche) ụzọ mgbochi mmiri.Gypsum waterproof agent nwere ammonium borate, methyl sodium silicate, silicone resin, mmiri ara ehi fossil wax, mmetụta dị mma na silicone emulsion waterproof agent.
11. Arụ ọrụ activator
Enwere ike ime ka gypsum anhydrous eke na kemịkal mee ka ọ dị nro ma sie ike, ka ọ dị mma maka mmepụta nke gypsum akọrọ akọrọ ihe ụlọ.Acid activator nwere ike mee ngwangwa mbido hydrous gypsum anhydrous, belata oge nhazi ma melite ike mmalite nke gypsum siri ike.Alkaline activator nwere obere mmetụta na mmalite hydration ọnụego nke anhydrous gypsum, ma o doro anya na ọ nwere ike imeziwanye ike nke gypsum siri ike ahụ, ma nwee ike ịmepụta akụkụ nke ihe na-eme ka hydraulic cimenting na gypsum siri ike, nke na-eme ka mmiri na-eguzogide mmiri nke gypsum siri ike. .Mmetụta ngwa nke acid-base compound activator dị mma karịa nke otu acid ma ọ bụ isi activator.Acid activators gụnyere potassium alum, sodium sulfate, potassium sulfate na na.Ndị na-arụ ọrụ alkaline gụnyere ngwa ngwa, ciment, clinker ciment, dolomite calcined na ndị ọzọ.
Thixotropic mmanu mmanu
Thixovariable mmanu na-eji na onwe-leveling gypsum ma ọ bụ stuccoing gypsum, nke nwere ike ibelata eruba-eguzogide nke gypsum ngwa agha, ogologo oge oghere, gbochie stratification na mmezi nke slurry, nke mere na-eme ka slurry nweta mma mmanu na-ewu, mgbe na-eme ka obi tara akpụ aru Ọdịdị edo, dịkwuo elu ya ike.
Oge nzipu: Mee-25-2022