Otu admixture nwere oke n'ịkwalite arụmọrụ nke gypsum slurry. 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 dị iche iche na ihe dị iche iche na-achọ ka a na-ejikọta ya ma mejupụta ya na nkà mmụta sayensị na ezi uche.
01. Coagulation regulation
A na-ekewa ndị na-achịkwa coagulation n'ime ndị na-azụ azụ na ngwa ngwa. Na gypsum akọrọ ngwa ngwa agwakọta, a na-eji retarders maka ngwaahịa a kwadebere na plasta nke paris, na accelerators na-achọrọ maka ngwaahịa ndị a kwadebere na gypsum anhydrous ma ọ bụ ozugbo na-eji dihydrate gypsum.
02. Nkwụghachi azụ
Ịgbakwunye retarder na gypsum akọrọ akọrọ ihe ụlọ na-egbochi usoro hydration nke hemihydrate gypsum ma na-agbatị oge nhazi. E nwere ọtụtụ ọnọdụ maka hydration nke plasta, gụnyere usoro nhazi nke plasta, okpomọkụ nke ihe nkedo mgbe ị na-akwadebe ngwaahịa, urughuru mma, ịtọ oge na pH uru nke ngwaahịa a kwadebere, wdg. Ihe ọ bụla nwere mmetụta ụfọdụ na retarding mmetụta. , yabụ enwere nnukwu ọdịiche dị na ọnụọgụ retarder na ọnọdụ dị iche iche. Ka ọ dị ugbu a, ihe kacha mma maka gypsum na China bụ protein a gbanwere (protein dị elu) retarder, nke nwere uru nke ọnụ ala dị ala, ogologo oge nkwụsịtụ, obere ike nkwụsị, nrụpụta ngwaahịa dị mma, na ogologo oge na-emeghe. Ọnụ ego a na-eji akwadebe plasta stucco nke ala na-abụkarị 0.06% ruo 0.15%.
03. Nchikota
Ịme ngwa ngwa nke slurry na-akpalite oge na ịgbatị ọsọ slurry na-akpali akpali bụ otu n'ime ụzọ a na-esi eme ngwangwa coagulation anụ ahụ. Ngwunye kemịkalụ a na-ejikarị eme ihe n'ihe eji ewu ụlọ nke anhydrite ntụ ntụ gụnyere potassium chloride, potassium silicate, sulfate na ihe acid ndị ọzọ. Usoro onunu ogwu bụ 0.2% ruo 0.4%.
04. Onye na-ejigide mmiri
Gypsum akọrọ-mix ụlọ ihe eji eme ụlọ enweghị ikewapụ ya na ihe ndị na-ejigide mmiri. Ịkwalite ọnụ ọgụgụ njide mmiri nke gypsum ngwaahịa slurry bụ iji hụ na mmiri nwere ike ịdị na gypsum slurry ruo ogologo oge, iji nweta mmetụta siri ike hydration dị mma. Iji meziwanye ihe owuwu ụlọ gypsum ntụ ntụ, belata ma gbochie nkewa na ọbara ọgbụgba nke gypsum slurry, melite sagging nke slurry, ịgbatị oge mmeghe, na dozie nsogbu dị mma nke injinia dị ka mgbawa na oghere bụ ihe niile na-enweghị ikewapụ na ndị na-ejigide mmiri. Ma mmiri na-ejigide gị n'ụlọnga bụ ezigbo na-adabere tumadi na ya dispersibility, ozugbo solubility, moldability, thermal kwụsie ike na ndim ihe onwunwe, n'ime nke kasị mkpa index bụ mmiri njigide.
Enwere ụdị ihe anọ na-ejigide mmiri:
① Onye na-ejide mmiri cellulosic
Ka ọ dị ugbu a, nke a na-ejikarị n'ahịa bụ hydroxypropyl methylcellulose, methyl cellulose na carboxymethyl cellulose sochiri ya. N'ozuzu arụmọrụ nke hydroxypropyl methylcellulose dị mma karịa nke methylcellulose, na mmiri njide nke abụọ dị nnọọ elu karịa nke carboxymethylcellulose, ma ndim mmetụta na bonding mmetụta dị njọ karịa nke carboxymethylcellulose. Na gypsum akọrọ-agwakọta ihe ụlọ, ọnụ ọgụgụ nke hydroxypropyl na methyl cellulose bụ n'ozuzu 0.1% ka 0.3%, na ego nke carboxymethyl cellulose bụ 0,5% ka 1.0%. Ọnụ ọgụgụ dị ukwuu nke ihe atụ ngwa na-egosi na ijikọta ihe abụọ ahụ dị mma.
② onye na-ejigide mmiri starch
A na-ejikarị ihe na-ejigide mmiri starch eme ihe maka gypsum putty na plasta plasta, ma nwee ike dochie akụkụ ma ọ bụ ihe niile na-ejigide mmiri cellulose. Ịgbakwunye onye na-ejigide mmiri nke starch na gypsum akọrọ ntụ ntụ ihe ụlọ nwere ike imeziwanye arụmọrụ, ịrụ ọrụ, na nkwụsị nke slurry. Ihe ndị na-ejigide mmiri na-eji starch eme ihe gụnyere tapioca starch, starch pregelatinized, starch carboxymethyl, na carboxypropyl starch. Ọnụ ego nke onye na-ejigide mmiri na starch na-abụkarị 0.3% ruo 1%. Ọ bụrụ na ọnụ ọgụgụ ahụ buru ibu, ọ ga-eme ka mildew nke ngwaahịa gypsum na gburugburu iru mmiri, nke ga-emetụta kpọmkwem àgwà nke ọrụ ahụ.
③ ihe na-ejigide mmiri gluu
Ụfọdụ nrapado ozugbo nwekwara ike ịrụ ọrụ njide mmiri ka mma. Dịka ọmụmaatụ, 17-88, 24-88 polyvinyl alcohol powder, Tianqing gum na guar gum na-eji na gypsum akọrọ akọrọ ihe ụlọ dị ka gypsum, gypsum putty, na gypsum mkpuchi gluu. Nwere ike ibelata ọnụọgụ mmiri nke cellulose. Karịsịa na gypsum na-ejikọta ngwa ngwa, ọ nwere ike dochie anya cellulose ether mmiri na-ejigide mmiri n'ọnọdụ ụfọdụ.
④ Inorganic mmiri na-ejigide ihe
Ngwa nke ịgwakọta ihe ndị ọzọ na-ejigide mmiri na gypsum akọrọ akọrọ ihe ụlọ nwere ike ibelata ọnụ ọgụgụ nke ihe ndị ọzọ na-ejigide mmiri, belata ọnụ ahịa ngwaahịa, ma na-ekerekwa òkè ụfọdụ n'ịkwalite ọrụ na ịrụ ọrụ nke gypsum slurry. Ihe eji echekwa mmiri inorganic nke a na-ejikarị gụnyere bentonite, kaolin, ụwa diatomaceous, zeolite ntụ ntụ, ntụ ntụ perlite, ụrọ attapulgite, wdg.
05.Nrapado
Ngwa nke adhesives na gypsum akọrọ-agwakọta ihe ụlọ bụ nke abụọ naanị ndị na-ejigide mmiri na ndị retarders. Ngwa ngwa gypsum na-edobe onwe ya, gypsum bonded, gypsum caulking, na ihe mkpuchi gypsum gluu bụ ihe a na-apụghị ikewapụ na nrapado.
▲ ntụ ntụ latex na-agbanwe agbanwe
Redispersible latex ntụ ntụ na-ọtụtụ ebe na gypsum onwe-leveling ngwa agha, gypsum mkpuchi compound, gypsum caulking putty, wdg Karịsịa na gypsum onwe-leveling ngwa agha, ọ nwere ike melite viscosity na fluidity nke slurry, na-arụkwa ọrụ dị ukwuu n'ibelata. delamination, izere ọbara ọgbụgba, na imeziwanye mgbape mgbape. Usoro onunu ogwu bụ n'ozuzu 1.2% ka 2.5%.
v mmanya polyvinyl ozugbo
Ka ọ dị ugbu a, mmanya polyvinyl ngwa ngwa ejiri na nnukwu ego n'ahịa bụ 24-88 na 17-88. A na-ejikarị ya eme ihe na ngwaahịa ndị dị ka gypsum bonding, gypsum putty, gypsum composite thermal insulation compound, na plasta plasta. 0.4% ruo 1.2%.
Guar chịngọm, Tianqing chịngọm, carboxymethyl cellulose, starch ether, wdg bụ ihe niile adhesives na dị iche iche bonding ọrụ na gypsum akọrọ-agwakọta ihe ụlọ.
06. Ọkpụkpụ
Ọkpụkpụ bụ tumadi iji melite workability na sagging nke gypsum slurry, nke yiri adhesives na mmiri na-ejigide ihe, ma ọ bụghị kpamkpam. Ụfọdụ ngwaahịa ndị na-ekpu mmiri na-arụ ọrụ nke ọma n'ịdị arọ, mana ọ bụghị ezigbo n'ihe gbasara ike jikọrọ ọnụ na njide mmiri. Mgbe ị na-emepụta ihe eji ewu ụlọ gypsum akọrọ ntụ ntụ, a ga-atụle isi ọrụ nke admixtures iji tinye admixtures nke ọma na nke ọma. Ngwaahịa thickener a na-ejikarị gụnyere polyacrylamide, Tianqing gum, guar gum, carboxymethyl cellulose, wdg.
07. Onye na-ahụ maka ikuku
A na-ejikarị eme ihe na-eme ka ikuku ikuku, nke a makwaara dị ka onye na-agba ụfụfụ, na gypsum akọrọ akọrọ ihe ụlọ dị ka ihe mkpuchi gypsum na plasta plasta. Onye na-emepụta ihe na-eme ka ikuku (onye na-emepụta ụfụfụ) na-enyere aka melite ihe owuwu, nkwụsị mgbawa, nkwụsị nke ntu oyi, belata ọbara ọgbụgba na nkewa, na usoro ọgwụgwọ bụ 0.01% ruo 0.02%.
08. Defoamer
A na-ejikarị Defoamer eme ihe na gypsum onwe-leveling ngwa agha na gypsum caulking putty, nke nwere ike imeziwanye njupụta, ike, mmiri na-eguzogide na cohesiveness nke slurry, na usoro onunu ogwu bụ n'ozuzu 0.02% ka 0.04%.
09. Onye na-ebelata mmiri
Ihe na-ebelata mmiri nwere ike imeziwanye mmiri nke gypsum slurry na ike nke gypsum siri ike nke ahụ, a na-ejikarị gypsum na-edozi onwe ya na akwa plasta. Ka ọ dị ugbu a, a na-ahọrọ ndị na-ebelata mmiri na-emepụta n'ime ụlọ dị ka mmiri ha si dị na mmetụta ike ha: polycarboxylate retarded water reducers, melamine high-ficiency water reducers, tea-based high-ficificiency high-quality water reducers, and lignosulfonate water reducers. Mgbe ị na-eji ihe ndị na-ebelata mmiri na gypsum akọrọ-mix ihe ụlọ, na mgbakwunye na-atụle oriri mmiri na ike, a ghaghịkwa ilebara anya na nhazi oge na nkwụsị nke mmiri nke ihe owuwu ụlọ gypsum n'oge.
10. Onye na-ekpuchi mmiri
Nnukwu ntụpọ nke ngwaahịa gypsum bụ mmiri na-adịghị mma. Ebe ndị nwere oke iru mmiri nwere ihe dị elu chọrọ maka mmiri na-eguzogide mmiri nke gypsum akọrọ-agwakọta ngwa agha. N'ozuzu, a na-eme ka nguzogide mmiri nke gypsum siri ike dịkwuo mma site n'ịgbakwunye admixtures hydraulic. N'ihe banyere mmiri mmiri ma ọ bụ juputara na mmiri, mgbakwunye mpụga nke hydraulic admixtures nwere ike ime ka ọnụ ọgụgụ dị nro nke gypsum siri ike ruru ihe karịrị 0.7, iji mezuo ihe ndị achọrọ ike ngwaahịa. A nwekwara ike iji kemịkalụ admixtures belata solubility nke gypsum (ya bụ, ịbawanye ọnụ ọgụgụ dị nro), belata mgbasa nke gypsum na mmiri (ya bụ, ibelata ọnụego mmịpụta mmiri) ma belata mbuze nke gypsum siri ike (ya bụ. , ikewapụ mmiri). Ihe mgbochi mmiri gypsum gụnyere ammonium borate, sodium methyl siliconate, silicone resin, emulsified paraffin wax, na silicone emulsion waterproofing agents nwere mmetụta dị mma.
11. Onye na-akpali akpali
Ịrụ ọrụ nke anhydrites eke na kemịkalụ na-enye nrapado na ike maka mmepụta nke gypsum dry- mix ihe ụlọ. Onye na-arụ ọrụ acid nwere ike mee ka ọnụọgụ hydrous gypsum dị ngwa ngwa ngwa ngwa, belata oge nhazi, ma melite ike mmalite nke gypsum siri ike. Isi activator nwere obere mmetụta na mmalite hydration ọnụego nke anhydrous gypsum, ma ọ nwere ike imeziwanye ike nke gypsum ahụ siri ike nke ọma, ma nwee ike bụrụ akụkụ nke ihe gelling hydraulic na gypsum siri ike, na-emeziwanye nguzogide mmiri nke ọma. gypsum siri ike anụ ahụ. Mmetụta ojiji nke acid-base compound activator dị mma karịa nke otu acidic ma ọ bụ isi activator. Acid stimulants gụnyere potassium alum, sodium sulfate, potassium sulfate, wdg. Alkaline activators gụnyere quicklime, ciment, ciment clinker, calcined dolomite, wdg.
12. Thixotropic mmanu
A na-eji mmanụ aṅụ thixotropic mee ihe na gypsum na-edozi onwe ya ma ọ bụ plasta gypsum, nke nwere ike belata nkwụsị nke gypsum ngwa agha, ogologo oge na-emeghe, gbochie ịkwanye na nhazi nke slurry, nke mere na slurry nwere ike nweta ezigbo mmanu na ịrụ ọrụ. N'otu oge ahụ, usoro ahụ dị n'otu, na ike elu ya na-abawanye.
Oge nzipu: Eprel-20-2023