Pali zolepheretsa pakuwongolera magwiridwe antchito a gypsum paste pogwiritsa ntchito single admixture.Ngati ntchito ya matope a gypsum ndikupeza zotsatira zokhutiritsa ndikukwaniritsa zofunikira zosiyanasiyana zogwiritsira ntchito, zosakaniza zamankhwala, zophatikizika, zodzaza ndi zinthu zosiyanasiyana zimafunika kuti ziphatikizidwe ndikuthandizirana mwasayansi komanso moyenera.
1. The coagulant
Regulating coagulant imagawidwa kukhala retarder ndi coagulant.Mu gesso dry Mix matope, mankhwala omwe amagwiritsa ntchito gesso yophika kupanga zonse zomwe amagwiritsa ntchito kuchedwa coagulate wothandizira, gwiritsani ntchito anhydrous gesso kapena mankhwala omwe amagwiritsa ntchito 2 madzi gesso kuti apange mwachindunji ayenera kulimbikitsa wothandizira coagulate.
2. Wochedwa
Powonjezera retarder ku gypsum youma zomangira zosakanikirana, njira ya hydration ya semi-hydrous gypsum imaletsedwa ndipo nthawi yolimba imatalika.The hydration zinthu gypsum pulasitala ndi zosiyanasiyana, kuphatikizapo gawo zikuchokera gypsum pulasitala, kutentha kwa gypsum zakuthupi, tinthu fineness, kuika nthawi ndi pH mtengo wa yomalizidwa mankhwala.Chilichonse chimakhala ndi chikoka pa zotsatira za kuchedwetsa, kotero pali kusiyana kwakukulu mu kuchuluka kwa retarding wothandizira pazikhalidwe zosiyanasiyana.Pakalipano, gypsum special retarder yabwino yapakhomo ndi metamorphic protein (high protein) retarder, ili ndi ubwino wotsika mtengo, nthawi yayitali yochepetsera mphamvu, kutaya mphamvu pang'ono, kumanga bwino, nthawi yayitali yotsegula ndi zina zotero.M'munsi mwa mtundu wa stucco gypsum kukonzekera ndalama zambiri mu 0.06% ~ 0.15%.
3. The coagulant
Kufulumizitsa nthawi yothamanga ya slurry ndikutalikitsa kuthamanga kwa slurry ndi imodzi mwa njira zolimbitsa thupi zolimbikitsira coagulation.Ma coagulants omwe amagwiritsidwa ntchito kwambiri muzomangamanga za anhydrous gypsum powder ndi potaziyamu chloride, potassium silicate, sulfate ndi ma acid ena.Mlingo nthawi zambiri ndi 0.2% ~ 0.4%.
4. Wothandizira kusunga madzi
Zida zomangira za Gesso dry mix sizingachoke pachitetezo chamadzi.Kupititsa patsogolo kusungirako madzi kwa gypsum product slurry ndikuwonetsetsa kuti madzi atha kukhalapo mu gypsum slurry kwa nthawi yayitali kuti apeze hydration yabwino komanso kuumitsa.Kupititsa patsogolo kupangika kwa zida zomangira ufa wa gypsum, kuchepetsa ndikuletsa kulekanitsa ndi kukhetsa magazi kwa gypsum slurry, kuwongolera kutuluka kwa slurry kupachikika, kukulitsa nthawi yotsegulira, kuthetsa mavuto aukadaulo monga kusweka ndi ng'oma yopanda kanthu sikungasiyanitsidwe ndi wosunga madzi.Kaya wothandizira madzi ndi abwino zimadalira makamaka dispersibility, kusungunuka mwamsanga, kuumba, kukhazikika kwa kutentha ndi thickening, pakati pawo kusunga madzi ndi index yofunika kwambiri.
Ma cellulose ether posunga madzi
Pakadali pano, hydroxypropyl methyl cellulose ndiye amagwiritsidwa ntchito kwambiri pamsika, kutsatiridwa ndi methyl cellulose, ndi carboxymethyl cellulose.Mphamvu zonse za hydroxypropyl methyl cellulose ndizabwino kuposa methyl cellulose.Kusungidwa kwamadzi kwa hydroxypropyl methyl cellulose ndikokwera kwambiri kuposa carboxymethyl cellulose, koma kukhuthala kwake komanso kulumikizana kumakhala koyipa kuposa carboxymethyl cellulose.Mu gypsum youma zomangira zosakaniza, kuchuluka kwa hydroxypropyl ndi methyl cellulose kumakhala pakati pa 0.1% ~ 0.3%, ndipo kuchuluka kwa carboxymethyl cellulose kuli mu 0.5% ~ 1.0%.
Wowuma wosunga madzi
Wowuma amateteza wothandizila madzi makamaka amagwiritsa ntchito gesso be putty mu mwana, nkhope wosanjikiza chitsanzo stucco gesso, akhoza m'malo mwa tsankho kapena okwana mapadi mtundu amateteza madzi.Kugwira ntchito, kukhazikika komanso kusasinthika kwa slurry kumatha kuwongolera powonjezera wowuma wosungira madzi kuzinthu zomangira zouma za gypsum.Zomwe zimagwiritsidwa ntchito kwambiri ndi sitachi yosunga madzi ndi wowuma wa chinangwa, pre gelatinized starch, carboxymethyl starch, carboxypropyl starch.Wowuma mtundu amateteza madzi wothandizila mlingo kukhala 0.3% ~ 1% zambiri, ngati mlingo waukulu kwambiri msonkhano zimapangitsa gesso mankhwala kutulutsa mildew chodabwitsa m'munsimu yonyowa pokonza chilengedwe, zimakhudza khalidwe polojekiti mwachindunji.
③ Chosungira madzi chamtundu wa glue
Zomatira zina pompopompo zitha kugwiranso ntchito bwino pakusunga madzi.Monga 17-88, 24-88 polyvinyl mowa ufa, chingamu wobiriwira ndi guar chingamu ntchito kugwirizana gypsum, gypsum putty, gypsum kutchinjiriza guluu ndi gypsum youma youma zomangira zosakaniza, mu kuchuluka kwa nkhaniyo, akhoza kuchepetsa kuchuluka kwa cellulose posungira madzi.Makamaka mu gypsum yomamatira mwachangu, imatha kusintha ma cellulose ether nthawi zina.
(4) Zinthu zosungira madzi m'thupi
Kugwiritsa ntchito zida zina zosungira madzi muzinthu zomangira zowuma za gypsum kumatha kuchepetsa kuchuluka kwa zinthu zina zosungira madzi, kuchepetsa mtengo wazinthu, ndikuwongolera magwiridwe antchito komanso kukhazikika kwa gypsum slurry.Zomwe zimagwiritsidwa ntchito kwambiri posungira madzi ndi bentonite, kaolin, diatomite, ufa wa zeolite, ufa wa perlite, dongo la attapulgite, etc.
5. Zomatira
Kugwiritsa ntchito zomatira muzomangamanga zowuma za gypsum ndizocheperako posungira madzi ndi retarder.Gesso self leveling matope, zomatira gesso, caulking gesso, kuteteza kutentha gesso guluu sangathe kusiya zomatira.
Redispersible latex ufa:
Redispersible latex ufa amagwiritsidwa ntchito kwambiri mu matope odziyimira pawokha a gypsum, guluu wa gypsum insulation, gypsum caulking putty ndi zina zotero.Makamaka mu matope odziyimira pawokha a gypsum, amatha kupanga slurry viscidity, fluidity yabwino, kuchepetsa kusanja, kupewa magazi, kukonza kukana kwa ming'alu ndi zina zotero.Kugwiritsa ntchito nthawi zambiri kumakhala 1.2% ~ 2.5%.
Instant polyvinyl alcohol:
Pakali pano, nthawi yomweyo kusungunuka polyvinyl mowa ndi mlingo wochuluka pamsika ndi 24-88, 17-88 mankhwala a zitsanzo ziwiri, nthawi zambiri ntchito pulasitala zomatira, gesso, gesso pawiri kutentha kuteteza guluu, stucco pulasitala ndi zinthu zina, mlingo ndi. mu 0.4% ~ 1.2% kawirikawiri.
Guar chingamu, gelatin yam'munda, carboxymethyl cellulose, starch ether ndi zina zotero ndi zomatira zomwe zimakhala ndi ntchito zosiyanasiyana zomangira muzomangamanga zowuma za gypsum.
6. Wonenepa
Thickening makamaka kusintha workability ndi fluidity wa gypsum slurry, amene ali ofanana zomatira ndi madzi posungira wothandizila, koma osati kwathunthu.Ena thickening wothandizira mankhwala ndi zabwino thickening ulemu kwenikweni, koma ulemu si abwino mu mgwirizano mphamvu, madzi posungira mlingo.Popanga gypsum youma ufa zomangira, zotsatira zazikulu za admixture ayenera kuganiziridwa mokwanira kuti ntchito admixture bwino ndi wololera.Zomwe zimagwiritsidwa ntchito kwambiri ndi polyacrylamide, chingamu chobiriwira, guar chingamu, carboxymethyl cellulose.
7. Air-entraining wothandizira
Air etraining wothandizila amadziwikanso ngati thovu agent, makamaka ntchito gypsum kutchinjiriza guluu, pulasitala pulasitala ndi gypsum youma youma zomangira zosakaniza.Wothandizira mpweya (wotulutsa thovu) amathandizira kukonza zomangamanga, kukana ming'alu, kukana chisanu, kuchepetsa kutuluka kwa magazi ndi kulekanitsa zochitika, mlingo nthawi zambiri umakhala 0.01% ~ 0.02%.
8. Defoaming wothandizira
Defoaming wothandizila nthawi zambiri amagwiritsidwa ntchito pa gesso self-leveling matope, gesso caulking be putty in, amatha kukweza kachulukidwe wa zamkati zakuthupi, mphamvu, kukana madzi, kugonana kwa caking, mlingo uli mu 0.02% ~ 0.04% kawirikawiri.
9. Madzi ochepetsera
Kuchepetsa wothandizira madzi kumatha kusintha gesso slurry fluidity ndi gesso kulimbitsa thupi, nthawi zambiri pa gesso self leveling mortar, stucco gesso.Pakali pano, zoweta madzi kuchepetsa wothandizila ndi polycarboxylic asidi retarding madzi kuchepetsa wothandizila, melamine mkulu-mwachangu madzi kuchepetsa wothandizila, tiyi mkulu-mwachangu retarding madzi kuchepetsa wothandizila, lignosulfonate madzi kuchepetsa wothandizila malinga fluidity ndi mphamvu zotsatira.Kuwonjezera pa kumwa madzi ndi mphamvu, m'pofunika kulabadira kuyika nthawi ndi fluidity kutaya kwa gypsum zomangira ntchito madzi kuchepetsa wothandizila mu gypsum youma zomangira osakaniza.
10. Woteteza madzi
Vuto lalikulu la zinthu za gypsum ndi kusamva bwino kwa madzi.Dera lomwe lili ndi chinyezi chokulirapo chimakhala ndi zofunika kukana madzi kwa gypsum dry mixed mortar.Nthawi zambiri, kukana kwamadzi kwa thupi lolimba la gypsum kumakhala bwino ndikuwonjezera ma hydraulic admixture.Pansi pamadzi onyowa kapena odzaza, mphamvu yofewa ya thupi lolimba la gypsum imatha kufika pa 0,7, kuti ikwaniritse zofunikira zamphamvu yazinthu.Zosakaniza za Chemical zitha kugwiritsidwanso ntchito kuchepetsa kusungunuka kwa gypsum (ndiko kuti, kuonjezera kufewetsa kokwanira), kuchepetsa kuyamwa kwa gypsum m'madzi (ndiko kuti, kuchepetsa kuyamwa kwamadzi) ndikuchepetsa kukokoloka kwa thupi lolimba la gypsum (ndiko kuti, madzi). isolation) njira yolimbana ndi madzi.Gypsum waterproof wothandizila ali ammonium borate, methyl sodium silicate, silikoni utomoni, mkaka mafuta akale sera, zotsatira zake ndi bwino ndi silikoni emulsion madzi wothandizila.
11. Activator yogwira
Natural and chemical anhydrous gypsum imatha kutsegulidwa kuti ikhale yolimba komanso yolimba, kuti ikhale yoyenera kupanga zida zomangira zowuma za gypsum.Acid activator imatha kufulumizitsa kuchuluka kwa hydration ya anhydrous gypsum, kufupikitsa nthawi yokhazikitsira ndikusintha mphamvu zoyamba za thupi lolimba la gypsum.Alkaline activator ali ndi zotsatira zochepa pa mlingo oyambirira hydration wa gypsum anhydrous, koma n'zoonekeratu kusintha mphamvu kenako gypsum anaumitsa thupi, ndipo akhoza kukhala mbali ya hayidiroliki cementing zakuthupi mu gypsum anaumitsa thupi, amene bwino bwino kukana madzi a gypsum anaumitsa thupi. .Kugwiritsa ntchito kwa asidi-base pawiri activator ndikwabwino kuposa kwa asidi imodzi kapena choyambitsa choyambira.Acid activators monga potaziyamu alum, sodium sulphate, potaziyamu sulphate ndi zina zotero.Zoyambitsa zamchere zimaphatikizapo quicklime, simenti, simenti clinker, calcined dolomite ndi zina zotero.
Mafuta a Thixotropic
lubricant Thixovariable ntchito pawokha gypsum kapena stuccoing gypsum, amene angathe kuchepetsa otaya kukana gypsum matope, kutalikitsa nthawi kutsegula, kuteteza stratification ndi kukhazikika kwa slurry, kuti slurry kupeza lubricity wabwino ndi kumanga, kupanga oumitsa thupi kapangidwe yunifolomu, kuonjezera pamwamba mphamvu zake.
Nthawi yotumiza: May-25-2022