I-admixture enye inemida ekuphuculeni ukusebenza kwe-gypsum slurry. Ukuba ukusebenza kwe-gypsum mortar kukufumana iziphumo ezanelisayo kunye nokuhlangabezana neemfuno ezahlukeneyo zesicelo, i-admixtures yeekhemikhali, i-admixtures, i-fillers, kunye nezixhobo ezahlukeneyo kufuneka zihlanganiswe kwaye zincediswe ngendlela yesayensi kunye nengqiqo.
01. Umlawuli wokudibanisa
Abalawuli be-coagulation bohlulwe ikakhulu baba ngabacuphi kunye nee-accelerators. Kwi-gypsum exutywe ngodaka, i-retarders isetyenziselwa iimveliso ezilungiselelwe nge-plaster of paris, kwaye i-accelerators iyadingeka kwiimveliso ezilungiselelwe nge-gypsum anhydrous okanye ngokuthe ngqo usebenzisa i-dihydrate gypsum.
02. Umnciphisi
Ukongeza i-retarder kwi-gypsum eyomileyo exutywe izinto zokwakha inqanda inkqubo ye-hydration ye-hemihydrate gypsum kwaye yandisa ixesha lokumisela. Kukho iimeko ezininzi hydration udaka, kuquka ukubunjwa isigaba udaka, ubushushu bezinto udaka xa ulungiselela iimveliso, amasuntswana fineness, ixesha ukusetwa kunye nexabiso pH iimveliso ezilungisiweyo, njl. Okwangoku, i-retarder engcono ye-gypsum e-China yi-protein elungisiweyo (iprotheni ephezulu) i-retarder, enenzuzo yeendleko eziphantsi, ixesha elide lokubuyiswa, ukulahlekelwa kwamandla amancinci, ukwakhiwa kwemveliso efanelekileyo, kunye nexesha elide lokuvula. Isixa-mali esisetyenzisiweyo ekulungiseni udaka lwe-stucco kumgangatho osezantsi luqhele ukuba yi-0.06% ukuya kwi-0.15%.
03. I-Coagulant
Ukukhawulezisa ixesha lokuvuselela i-slurry kunye nokwandisa isantya esishukumisayo se-slurry yenye yeendlela zokunyuka kwe-phytic coagulation. I-coagulants yeekhemikhali ezisetyenziswa ngokuqhelekileyo kwizinto zokwakha i-anhydrite powder ziquka i-potassium chloride, i-potassium silicate, i-sulfate kunye nezinye izinto ze-asidi. Idosi ngokubanzi yi-0.2% ukuya kwi-0.4%.
04. Iarhente yokugcina amanzi
Izinto zokwakha ze-gypsum dry-mix azikwazi ukwahlula kwii-agent zokugcina amanzi. Ukuphucula izinga lokugcinwa kwamanzi kwi-slurry yemveliso ye-gypsum kukuqinisekisa ukuba amanzi anokubakho kwi-gypsum slurry ixesha elide, ukuze kufumaneke isiphumo esihle sokuqina kwe-hydration. Ukuphucula ukwakhiwa kwezixhobo zokwakha umgubo we-gypsum, ukunciphisa kunye nokuthintela ulwahlulo kunye nokopha kwe-gypsum slurry, ukuphucula ukuthotywa kwe-slurry, ukwandisa ixesha lokuvula, kunye nokusombulula iingxaki zobunjani bobunjineli ezinjengokuqhekeka kunye nokugrumba zonke azinakwahlulwa kwiiarhente zokugcina amanzi. Ingaba i-ejenti yokugcina amanzi ifanelekile kuxhomekeke kwi-dispersibility yayo, ukunyibilika ngokukhawuleza, ukubunjwa, ukuzinza kwe-thermal kunye nepropathi yokuqina, phakathi kwayo isalathisi esibalulekileyo kukugcinwa kwamanzi.
Kukho iintlobo ezine zeearhente zokugcina amanzi:
①Iarhente yokugcina amanzi eCelulosic
Okwangoku, eyona isetyenziswa kakhulu kwintengiso yi-hydroxypropyl methylcellulose, ilandelwa yi-methyl cellulose kunye ne-carboxymethyl cellulose. Ukusebenza ngokubanzi kwe-hydroxypropyl methylcellulose kungcono kune-methylcellulose, kwaye ukugcinwa kwamanzi kwezi zibini kuphezulu kakhulu kune-carboxymethylcellulose, kodwa umphumo wokuqina kunye nefuthe le-bonding libi kakhulu kune-carboxymethylcellulose. Kwizinto zokwakha ezixutywe nge-gypsum, inani le-hydroxypropyl kunye ne-methyl cellulose ngokuqhelekileyo li-0.1% ukuya kwi-0.3%, kwaye inani le-carboxymethyl cellulose yi-0.5% ukuya kwi-1.0%. Inani elikhulu lemizekelo yesicelo libonisa ukuba ukusetyenziswa okudibeneyo kwezi zibini kungcono .
② I-arhente yokugcina amanzi esitatshi
I-agent egcina amanzi esitatshi isetyenziswa ikakhulu kwi-gypsum putty kunye ne-surface plaster, kwaye inokutshintsha inxalenye okanye yonke i-arhente yokugcina amanzi eselulosi. Ukongeza i-agent yokugcina amanzi esekelwe kwi-starch kwi-gypsum eyomileyo yomgubo wezinto zokwakha kunokuphucula ukusebenza, ukusebenza, kunye nokuhambelana kwe-slurry. Ngokuqhelekileyo ukusetyenziswa kwe-starch-based based-water-based agents kubandakanya i-tapioca starch, i-pregelatinized starch, i-carboxymethyl starch, kunye ne-carboxypropyl starch. Isixa se-agent yokugcina amanzi esekwe kwistatshi siqhelekile kwi-0.3% ukuya kwi-1%. Ukuba inani likhulu kakhulu, liya kubangela i-mildew yeemveliso ze-gypsum kwindawo enomswakama, eya kuchaphazela ngokuthe ngqo umgangatho weprojekthi.
③ I-arhente yokugcina amanzi eglu
Ezinye izinto ezincamathelayo ngoko nangoko zinokudlala indima engcono yokugcina amanzi. Ngokomzekelo, i-17-88, i-24-88 i-polyvinyl alcohol powder, i-Tianqing gum kunye ne-guar gum zisetyenziswa kwi-gypsum eyomileyo exutywe izinto zokwakha ezifana ne-gypsum, gypsum putty, kunye ne-gypsum insulation glue. Inokunciphisa inani le-arhente yokugcina amanzi eselulosi. Ngokukodwa kwi-gypsum yokudibanisa ngokukhawuleza, inokutshintsha ngokupheleleyo i-ether cellulose yokugcina amanzi kwezinye iimeko.
④ Imathiriyeli yokugcinwa kwamanzi engaphiliyo
Ukusetyenziswa kokudibanisa ezinye izinto zokugcina amanzi kwi-gypsum eyomileyo exutywe izixhobo zokwakha kunokunciphisa ubuninzi bezinye izinto zokugcina amanzi, ukunciphisa iindleko zemveliso, kunye nokudlala indima ethile ekuphuculeni ukusebenza kunye nokwakhiwa kwe-gypsum slurry. Izinto ezisetyenziswa ngokuqhelekileyo ezisetyenziselwa ukugcinwa kwamanzi zibandakanya i-bentonite, i-kaolin, umhlaba we-diatomaceous, i-zeolite powder, i-perlite powder, i-attapulgite clay, njl.
05.Ukuncamathelisa
Ukusetyenziswa kwe-adhesives kwi-gypsum dry-mixed building materials is second only to water-retarders and retarders. I-gypsum self-leveling mortar, igypsum edibeneyo, i-caulking gypsum, kunye ne-thermal insulation gypsum glue zonke azinakwahlulwa kwizinto ezincamathelayo.
▲ Umgubo welatex ophinda uhlakazwe
I-redispersible latex powder isetyenziswa ngokubanzi kwi-gypsum self-leveling mortar, i-gypsum insulation compound, i-gypsum caulking putty, njl. Ngokukodwa kwi-gypsum self-leveling mortar, inokuphucula i-viscosity kunye ne-fluidity ye-slurry, kwaye iphinde idlale indima enkulu ekunciphiseni i-delamination, kunye nokuphepha ukuxhathisa ukopha. Idosi ngokubanzi yi-1.2% ukuya kwi-2.5%.
▲ I-polyvinyl yotywala ngokukhawuleza
Okwangoku, i-alcohol ye-polyvinyl esheshayo esetyenziswe kwisixa esikhulu kwimarike yi-24-88 kunye ne-17-88. Ihlala isetyenziswa kwiimveliso ezifana ne-gypsum edibeneyo, i-gypsum putty, i-gypsum composite thermal insulation compound, kunye ne-plastering plaster. 0.4% ukuya kwi-1.2%.
I-Guar gum, i-Tianqing gum, i-carboxymethyl cellulose, i-starch ether, njl. zonke zi-adhesives ezinemisebenzi eyahlukeneyo yokudibanisa kwi-gypsum eyomileyo exutywe izinto zokwakha.
06. Thickener
Ukutyeba ikakhulu kukuphucula ukusebenza kunye ne-sagging ye-gypsum slurry, efana ne-adhesives kunye ne-agent yokugcina amanzi, kodwa kungekhona ngokupheleleyo. Ezinye iimveliso ze-thickener zisebenza ngokutyeba, kodwa azifanelekanga ngokuhambelana namandla okubambisana kunye nokugcinwa kwamanzi. Xa uqulunqa izixhobo zokwakha i-gypsum eyomileyo yomgubo, indima ephambili ye-admixtures kufuneka iqwalaselwe ngokupheleleyo ukuze kusetyenziswe i-admixtures engcono nangaphezulu. Iimveliso ze-thickener ezisetyenziswa ngokuqhelekileyo ziquka i-polyacrylamide, i-Tianqing gum, i-guar gum, i-carboxymethyl cellulose, njl.
07. I-arhente yokungenisa umoya
I-arhente yokungenisa umoya, eyaziwa ngokuba yi-arhente yogwebu, isetyenziswa ikakhulu kwi-gypsum exutywe nezixhobo zokwakha ezifana ne-gypsum insulation compound kunye ne-plaster plaster. I-arhente yokungenisa umoya (i-agent egwebu) inceda ekuphuculeni ukwakhiwa, ukumelana nokuqhekeka, ukuxhathisa kweqabaka, ukunciphisa ukopha kunye nokwahlula, kunye ne-dosage ngokubanzi yi-0.01% ukuya kwi-0.02%.
08. Defoamer
I-Defoamer isoloko isetyenziswa kwi-gypsum self-leveling mortar kunye ne-gypsum caulking putty, enokuphucula ukuxinana, amandla, ukuxhathisa kwamanzi kunye nokubambisana kwe-slurry, kwaye idosi ngokubanzi yi-0.02% ukuya kwi-0.04%.
09. I-arhente yokunciphisa amanzi
I-arhente yokunciphisa amanzi inokuphucula ubumanzi be-gypsum slurry kunye namandla e-gypsum eqinile yomzimba, kwaye idla ngokusetyenziswa kwi-gypsum self-leveling mortar kunye ne-plaster plaster. Okwangoku, izinciphisi zamanzi eziveliswa ekhaya zibekwe ngokwendlela yokuguquguquka kwazo kunye neziphumo zokomelela: izinciphisi zamanzi ezine-polycarboxylate eziphelelwe lixesha, izinciphisi zamanzi ze-melamine ezisebenza kakuhle kakhulu, iti esekwe kwi-high-effective high-retaded retaded reducers, kunye nezinciphisi zamanzi ze-lignosulfonate. Xa usebenzisa i-agent yokunciphisa amanzi kwi-gypsum dry-mix building materials, ngaphezu kokuqwalasela ukusetyenziswa kwamanzi kunye namandla, ingqalelo kufuneka ihlawulwe kwakhona kwixesha lokumisela kunye nokulahlekelwa kwe-fluidity yezinto zokwakha ze-gypsum ngokuhamba kwexesha.
10. I-arhente yokuthintela amanzi
Esona siphene sikhulu seemveliso zegypsum kukunganyangeki kakuhle kwamanzi. Iindawo ezinomswakama ophezulu womoya zineemfuno eziphezulu zokunganyangeki kwamanzi kwi-gypsum exutywe nodaka oluxubileyo. Ngokuqhelekileyo, ukuxhathisa kwamanzi kwi-gypsum eqinile kuyaphuculwa ngokudibanisa i-hydraulic admixtures. Kwimeko yamanzi amanzi okanye agcweleyo, ukongezwa kwangaphandle kwe-admixtures ye-hydraulic kungenza ukuba i-coefficient ethambileyo ye-gypsum ilukhuni ifikelele ngaphezu kwe-0.7, ukwenzela ukuba ihlangabezane neemfuno zamandla emveliso. Iingxube zemichiza zingasetyenziselwa ukunciphisa ukunyibilika kwe-gypsum (oko kukuthi, ukwandisa i-coefficient yokuthambisa), ukunciphisa i-adsorption ye-gypsum emanzini (oko kukuthi, ukunciphisa izinga lokungena kwamanzi) kunye nokunciphisa ukukhukuliseka kwe-gypsum lukhuni umzimba (oko kukuthi, ukuhlukaniswa kwamanzi). I-Gypsum ye-waterproofing agents iquka i-ammonium borate, i-sodium methyl siliconate, i-silicone resin, i-emulsified wax yeparafini, kunye ne-silicone emulsion i-agent yokukhusela amanzi enempembelelo engcono.
11. Isivuseleli esisebenzayo
Ukusebenza kwemvelo kunye neekhemikhali ze-anhydrites zinika ukubambelela kunye namandla okuvelisa i-gypsum dry-mix building materials. I-activator ye-asidi inokukhawulezisa isantya sokuhamba kwamanzi kwi-gypsum ye-anhydrous, inciphise ixesha lokumisela, kwaye iphucule amandla okuqala e-gypsum eqinile yomzimba. I-activator esisiseko inesiphumo esincinci kwireyithi ye-hydration ye-anhydrous gypsum, kodwa inokuphucula kakhulu amandla omva womzimba oqinileyo we-gypsum, kwaye inokuba yinxalenye yemathiriyeli ye-hydraulic gelling kumzimba oqinileyo we-gypsum, iphucula ngokufanelekileyo ukuxhathisa kwamanzi kwi-gypsum eqinile ngokwesondo somzimba. Isiphumo sokusetyenziswa kwe-acid-base compound activator ingcono kuneyodwa ye-acidic okanye i-activator esisiseko. I-Acid stimulants ibandakanya i-potassium alum, i-sodium sulfate, i-potassium sulfate, njl.
12. Thixotropic lubricant
I-lubricants Thixotropic isetyenziselwa i-gypsum yokuzimela okanye i-gypsum, enokunciphisa ukunyanzeliswa kokuhamba kwe-gypsum mortar, ukwandisa ixesha elivulekileyo, ukukhusela ukucwangciswa kunye nokuhlaliswa kwe-slurry, ukwenzela ukuba i-slurry ikwazi ukufumana i-lubricity efanelekileyo kunye nokusebenza. Ngexesha elifanayo, isakhiwo somzimba siyafana, kwaye amandla ayo angaphezulu ayanda.
Ixesha lokuposa: Apr-20-2023