1. Sebopeho sa Lik'hemik'hale le Mokhoa oa Limolek'hule
1.1 Synthesis le Mehaho ea Limolek'hule
(Naphthalene Sulfonate Superplasticizer)
Naphthalene sulfonate formaldehyde condensate (NSF), ka kakaretso e tsejoa e le naphthalene sulfonate superplasticizer, ke motsoako oa maiketsetso o fokotsang metsi o sebelisoang haholo ka konkreite e sebetsang hantle ho ntlafatsa phallo ntle le ho beha bots'epehi ba sebopeho kotsing..
E hlahisoa ka mehato e mengata ea lik'hemik'hale e kenyelletsang sulfonation ea naphthalene e nang le sulfuric acid e tsepamisitsoeng ho etsa naphthalene sulfonic acid., e lateloa ke condensation ea formaldehyde tlas'a boemo ba mocheso o laoloang le mathata a pH ho hlahisa polymer e nang le likarolo tse nkhang hamonate tse amanang le marokho a methylene..
Karolo e hlahisoang e na le mokokotlo oa hydrophobic naphthalene le hydrophilic sulfonate e mengata. (-SO PEDI ⁻) lihlopha, ho theha sebopeho sa polyelectrolyte se kang kama se etsang hore ho khonehe puisano e matla le likotoana tsa samente libakeng tse nang le metsi..
Mokhoa ona oa li-amphiphilic ke oa mantlha mosebetsing oa eona oa ho hasanya, ho lumella polymer ho adsorb sebakeng se kaholimo sa li-hydrate tsa konkreite le ho hlahisa repulsion ea electrostatic lipakeng tsa likhechana..
Tekanyo ea sulfonation le polymerization e ka fetoloa ho pholletsa le motsoako ho etsa boima ba limolek'hule le tefiso ea tefiso., e otlolohileng e amang katleho ea ho hasana le ho lumellana le mefuta e fapaneng ea konkreite.
1.2 Sistimi ea Phatlalatso ho Sisteme ea Cementitious
Ha o kenya letsoho ho konkreite e ncha, Litšobotsi tsa NSF haholo-holo ka ho nyelisoa ke electrostatic, Sistimi e ikhethang ho tsoa ho tšitiso e matla e sebelisoang ke li-superplasticizers tse ncha tse thehiloeng ho polycarboxylate.
Kamora ho kopanya, mehele ea hydrophobic naphthalene e adsorb libakeng tse qosoang hantle tsa tricalcium silicate. (C TSOHLE S) le mekhahlelo e meng ea konkreite, ha lihlopha tsa sulfonate tse qosoang hampe li lelefatsa nako ea khetho ea pore, ho theha sekgoa se tiileng sa bokahodimo bo bobe.
Sena se hlahisa lera le habeli la motlakase ho potoloha karoloana e 'ngoe le e 'ngoe ea konkreite, ho etsa hore li thulane le ho loantšana le tšekamelo ea tlhaho ea likhechana tse nyenyane tse phaphaselang ka lebaka la likhatello tsa van der Waals..
Ka lebaka leo, metsi a koaletsoeng ka har'a lihlopha a qala, ho matlafatsa metsi a motsoako le ho etsa hore ho khonehe bakeng sa phokotso e kholo ea metsi– hangata 15– 25%– ha a ntse a baballa bokgoni ba ho sebetsa.
Phapang ena e ntlafetseng e etsa hore ho be le microstructure e tšoanang haholo, porosity e fokotsehileng, le ho matlafatsa khōlo e matla ea mochine ha nako e ntse e ea.
Leha ho le joalo, ho sebetsa hantle ha NSF hoa fokotseha ka ho kopanya nako e telele kapa ho futhumala ka lebaka la desorption le tahlehelo ea ho theoha, moedi o susumetsang tshebediso ya ona dipalangoang tse tsamayang nako e telele kapa dibakeng tse futhumetseng.
( Naphthalene Sulfonate Superplasticizer)
2. Litšobotsi tsa Ts'ebetso le Melemo ea Moralo
2.1 Ts'ebetso le Ntlafatso ea Phallo
O mong oa melemo e potlakileng ea naphthalene sulfonate superplasticizer ke bokhoni ba eona ba ho matlafatsa ho putlama ha konkreite., e etsang hore e phalle haholo mme e be bonolo haholo, pompa, le ho kopanya, haholoholo meahong e matlafaditsweng haholo.
Ts'ebetso ena e matlafalitsoeng e lumella moaho le kaho ea mefuta e rarahaneng ea meaho mme e fokotsa tlhoko ea ho sisinyeha ha mochini., ho fokotseha ha ditjeho tsa basebetsi le tshoso ya ho koaheloa ka mahe a dinotshi kapa dikgeo.
NSF e sebetsa hantle haholo ho hlahisa konkreite e ikamahanyang le eona (SCC) ha e sebelisoa hammoho le baemeli ba fetolang viscosity le li-admixtures tse ling, ho netefatsa ho tlala hlobo le hlobo ntle le karohano.
Boemo ba ho eketseha ha fluidity bo itšetlehile ka lethal dose, ka tlwaelo ho fapana le 0.5% ho 2.0% ka boima ba konkreite, ka nqane ho moo ho fokotseha hoa kgutliso kapa esita le ho hloleha ho etsahala.
Ho fapana le li-plasticizers tse ling tsa tlhaho, NSF ha e hlahise moea o fetelletseng oa moea, ho tshireletsa boima le boima ba sehlahiswa sa ho qetela.
2.2 Matla le Lintlafatso tsa Bophelo bo Bolelele
Ka ho etsa hore ho khonehe ho fokotsa metsi ho isa ho samente (WC) tekanyo, NSF e bapala mosebetsi oa bohlokoa ho matlafatsa matla a konkreite a pele le a nako e telele..
Karolo e tlase ea w/c e theola capillary porosity, ho baka setenya, matrix e sa monyeng haholo e hananang le phihlello ea chloride, li-sulfate, le mongobo– lintlha tsa bohlokoa ho thibela ho matlafatsa kutu le tlhaselo ea sulfate.
Boemo bona bo matlafalitsoeng bo holisa bophelo ba lits'ebeletso libakeng tse tletseng bora joalo ka meaho ea leoatle, marokho, le libaka tsa ho hloekisa metsi a litšila.
Holim'a moo, phallo e ts'oanang ea likotoana tsa konkreite e khothaletsa metsi a felletseng le ho feta, ho potlakisa ho fumana matla le ho fokotsa matshosetsi a ho pshatla.
Lipatlisiso li bonts'itse hore konkreite ho kenyelletsa le NSF e ka etsa 20– 40% matla a phahameng a hatellang ka 28 matsatsi a bapisoa le ho laola metsoako, ho itshetleha ka setaele sa motswako le mathata a ho phekola.
3. Tšebelisano 'moho le Lintlha tsa Kopo Tseo U Lokelang ho li Nahana
3.1 Puisano le Lisebelisoa tsa Konkreite le tsa Tlatsetso
Ts'ebetso ea naphthalene sulfonate superplasticizer e ka fapana haholo ho latela sebopeho sa samente., haholo-holo C TWO A (tricalcium aluminate) lintho tse bonahalang le likhato tsa alkali.
Likhontere tse nang le C SIX A e phahameng li na le tšekamelo ea ho bapatsa NSF e ngata ka lebaka la litšebelisano tse matla tsa motlakase., e ka hlokang ho hoholoanyane ho etsa hore ho be le metsi a batloang.
Ka ho tšoanang, boteng ba lisebelisoa tse eketsehileng tsa samente (Li-SCM) joalo ka molora oa fofa, slag, kapa silica fume e susumetsa adsorption kinetics le boitšoaro ba rheological; ka mohlala, fly molora ka tlatsa bakeng sa libaka adsorption, ho fetola tekanyetso e sebetsang.
Ho kopanya NSF le metsoako e meng e kang retarders, li-accelerator, kapa liente tse kenyang moea li hloka tlhahlobo e hlokolosi ea ho lumellana ho qoba litšebelisano tse mpe joalo ka tahlehelo ea ho putlama ka potlako kapa pokello ea khanya..
Tatelano ya batching– hore na NSF e kenyelelitsoe nakong e fetileng, hohle, kapa ka mora ho kopanya– ka mokhoa o ts'oanang e ama ts'ebetso ea ho hasana 'me e tlameha ho ts'oara lits'ebetso tse kholo.
3.2 Tikoloho le Likarolo tsa Ts'ebetso
NSF e fumaneha ka mefuta ea mokelikeli le phofo, ka mekhoa ea mokelikeli e sebelisang dosing e bonolo haholo le ho qhibiliha ka potlako ho kopanya metsi.
Le hoja ka kakaretso e tsitsitse tlas'a mathata a tloaelehileng a polokelo, kgahlamelo e atolositsweng ho dithempereichara tse batang ho ka baka pula, 'me mocheso o phahameng o ka senya liketane tsa polymer ka nako.
Ho latela maemo a tikoloho, NSF e nkoa e le chefo e tlaase le e sa senyang, le hoja mekhoa e nepahetseng ea ho tšoara e tlameha ho lateloa ho thibela ho hema phofo kapa ho ruruha ha letlalo.
Tlhahiso ea eona e kenyelletsa lihlahisoa tsa petrochemical le formaldehyde, ho phahamisa matšoenyeho a ts'ebetso a tsamaisitseng boithuto ba lipatlisiso mabapi le likhetho tse thehiloeng ho bioloji le lithuto tse tala tsa synthesis.
4. Likopo tsa Indasteri le Pono ea Bokamoso
4.1 Sebelisa ho Precast, Itokiselitse-Motsoako, le Konkreite e Matla a Phahameng
Naphthalene sulfonate superplasticizer e sebelisoa ka botlalo ho etsa konkreite ea precast, moo taolo e nepahetseng ya nako ya ho seta, bokaholimo ba sebaka, 'me ho nepahala ha dimensional ho bohlokoa.
Ka konkreite e tsoakiloeng e itokiselitseng, e etsa hore ho khonehe bakeng sa lipalangoang tsa sebaka se selelele ntle le ho tlohela ho sebetsa ha u fihla liwebsaeteng tsa mohaho.
Hape ke karolo ea bohlokoa ho konkreite e matla haholo (HSC) le konkreite ea ts'ebetso e phahameng haholo (UHPC), moo karolelano e tlase haholo ea w/c e batloang ho fihlela matla a hatellang a fetang 100 MPa.
Lithako tsa lithanele, meaho e phahameng, le likarolo tsa konkreite tse hatelletsoeng esale pele li rua molemo ho tsoa ho nako e telele e matlafalitsoeng le ts'ebetso ea meralo e fanoeng ke metsoako e fetotsoeng ea NSF..
4.2 Mekhoa le Liqholotso ho Admixture Modern Technology
Ho sa tsotellehe ponahalo ea polycarboxylate ether e tsoetseng pele haholoanyane (PCE) li-superplasticizers tse nang le khatello e phahameng ea maikutlo le litlhoko tse tlase tsa litekanyetso, NSF e lula e sebelisoa hangata ka lebaka la katleho ea eona ea litšenyehelo le katleho e lekiloeng le ho lekoa.
Boithuto bo tsoelang pele bo shebane le lits'ebetso tse fapaneng tse kenyelletsang NSF le PCE kapa nanomaterials ho ntlafatsa rheology le kholo ea matla..
Mehato ea ho ntlafatsa biodegradability, tlhahiso e tlase ea formaldehyde nakong eohle ea tlhahiso, le ho matlafatsa tšebelisano le lisamente tse nang le khabone e tlase li bonts'a phetoho ea 'maraka ho ea ho thepa ea kaho e tšoarellang.
Ha re phethela, Naphthalene sulfonate superplasticizer e emela lejoe la motheo la theknoloji ea sejoale-joale ea boenjiniere ba konkreite ea sejoale-joale, ho koala sebaka se pakeng tsa mekhoa e tloaelehileng le katleho e tsoetseng pele ea lihlahisoa.
Bokhoni ba eona ba ho fetola konkreite hore e be komporo e bonolo haholo empa e le bonolo bo ntse bo tsoela pele ho ts'ehetsa tsoelopele ea lits'ebetso tsa lefats'e, esita le ha moloko o latelang o ntse o tsoela pele ho kopanya.
5. Morekisi
Cabr-Concrete ke morekisi oa Concrete Admixture e nang le over 12 lilemo tsa boiphihlelo ba ho boloka matla a nano-building le nts'etsopele ea nanotechnology. E amohela tefo ka Credit Card, T/T, West Union le Paypal. TRUNNANO e tla romella thepa ho bareki ba mose ho maoatle ka FedEx, DHL, ka moea, kapa ka lewatle. Haeba u batla boleng bo holimo Concrete Admixture, ka kopo ikutloe u lokolohile ho ikopanya le rona le ho romela potso.
Li-tag: sodium naphthalene,polycarboxylate ether, Naphthalene Sulfonate Superplasticizer
Lingoliloeng tsohle le litšoantšo li tsoa Marang-rang. Haeba ho na le litaba tsa copyright, ka kopo ikopanye le rona ka nako ho hlakola.
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