1. Kuumbwa Kwemakemikari uye Molecular Mechanism
1.1 Synthesis uye Molecular Architecture
(Naphthalene Sulfonate Superplasticizer)
Naphthalene sulfonate formaldehyde condensate (NSF), inowanzozivikanwa se naphthalene sulfonate superplasticizer, musanganiswa wekugadzira-unodzora mvura unoshandiswa zvakanyanya mukongiri yekushanda kwepamusoro kusimudzira kuyerera pasina kukanganisa kutendeseka kwechimiro..
Iyo inogadzirwa kuburikidza neakawanda-nhanho kemikari maitiro anosanganisira sulfonation yenaphthalene ine yakanangwa sulfuric acid kugadzira naphthalene sulfonic acid., inoteverwa ne formaldehyde condensation pasi peinodzorwa tembiricha pamwero uye pH matambudziko kugadzira polima ine inodzokorora inonhuhwirira mayuniti akabatanidzwa ne methylene mabhiriji..
Iyo inoguma chidimbu inoratidzira hydrophobic naphthalene musana uye akawanda hydrophilic sulfonate. (-SO MBIRI ⁻) zvikwata, kugadzira muzinga-senge polyelectrolyte chimiro chinoita kuti zvikwanise kutaurirana kwakasimba nemabhiti esimende munzvimbo dzine mvura..
Iyi amphiphilic style ndiyo huru kune yayo yekuparadzira basa, kubvumira iyo polymer kushambadza pamusoro penzvimbo yekongiri hydrates uye iripo electrostatic repulsion pakati pezvimedu..
Iyo dhigirii ye sulfonation uye polymerization inogona kushandurwa mukati mese synthesis kugadzirisa huremu hwemamorekuru uye kusimba kwemubhadharo., yakatwasuka inokanganisa diffusion kushanda uye kuenderana nemhando dzakasiyana dzekongiri.
1.2 Diffusion System muCementitious Systems
Kana yakapihwa kune nyowani kongiri, NSF inoratidzira zvakanyanya kuburikidza ne electrostatic repulsion, sisitimu yakasarudzika kubva kune steric chipingamupinyi chinoshandiswa neitsva polycarboxylate-based superplasticizers.
Pakusanganiswa, iyo hydrophobic naphthalene zvindori zvinoshambadza panzvimbo dzakachajirwa zvakanaka dze tricalcium silicate. (C FOUR S) uye mamwe matanho ekongiri, nepo mapoka akashata ane sulfonate anowedzera nguva mu pore sarudzo, kugadzira yakasimba yakashata yakashata nzvimbo inogoneka.
Izvi zvinogadzira magetsi maviri maviri akatenderedza bhiti rega rega rekongiri, zvichiita kuti vadzingire kure uye kurwisa tsika yechisikigo yezvidimbu zvakatsetseka kuyerera nekuda kwedzvinyiriro dzevan der Waals..
Naizvozvo, mvura yakavharirwa mukati memapoka inotangwa, kuwedzera kuyerera kwemusanganiswa uye kuita kuti zvikwanise kudzikiswa kwakanyanya mumvura– kazhinji 15– 25%– tichichengetedza kushanda.
Izvi zvakavandudzwa kupararira kunoguma mune yakawanda homogeneous microstructure, kuderedza porosity, uye yakawedzera mechanic kuoma kukura nekufamba kwenguva.
Zvisinei, kushanda zvakanaka kweNSF kunodzikira nekusanganiswa kwenguva refu kana kupisa nekuda kwedesorption uye kurasikirwa nekuderera, muganhu unopesvedzera kushandiswa kwayo mukufambisa kwenzendo refu kana kunzvimbo dzinodziya.
( Naphthalene Sulfonate Superplasticizer)
2. Performance Characteristics uye Design Benefits
2.1 Kushanda uye Kuyerera Kwekuyerera
Imwe yeanonyanya kubatsira mabhenefiti e naphthalene sulfonate superplasticizer kugona kwayo kuwedzera zvinoshamisa kudonha kwekongiri., kuita kuti inyatsoyerera uye iri nyore kuisa, pombi, uye simbisa, kunyanya muzvivakwa zvakasimbiswa zvakanyanya.
Uku kusimba kwekushanda kunobvumira kuvaka uye kuvaka kwemhando dzakaomesesa dzekuvaka uye kunoderedza kudiwa kwemakanika vibration., kuderera kwemitengo yevashandi uye kutyisidzira kwekuchera huchi kana kuparara.
NSF inonyanya kushanda mukugadzira inozvibatanidza kongiri (SCC) payakashandiswa musanganiswa nevamiriri ve-viscosity-inogadzirisa uye zvimwe zvinosanganiswa, kuvimbisa chakazara mold uye mildew kuzadza pasina kupatsanura.
Chiyero chekuwana fluidity chinoenderana nedosi, kazhinji zvakasiyana kubva 0.5% ku 2.0% nekurema kwekongiri, kunze kwekuderera kwekudzoka kana kunyange kunonoka kunogona kuitika.
Kusiyana nemamwe mapurasitiki echisikigo, NSF haiunzi kupindira kwemhepo kwakanyanya, kudzivirira kuwanda uye kuoma kwechigadzirwa chekupedzisira.
2.2 Kusimba uye Kuvandudza Hurefu Hwehupenyu
Nekuita kuti zvikwanise kudzikisa mvura-ku-simende (w/c) zviyero, NSF inoita basa rakakosha mukusimudzira zvese zvekutanga uye zvenguva refu kumanikidza uye kuchinjika simba kwekongiri..
Iyo yakadzikiswa w/c chikamu inodzikisa capillary porosity, kukonzera denser, mashoma absorptive matrix anoramba kuwana kwekloridi, sulfates, uye kunyorova– zvinhu zvakakosha mukudzivirira kusimbiswa kwemarara uye sulfate kurwisa.
Izvi zvakakwidziridzwa kusamira kunowedzera hupenyu hwesevhisi munzvimbo dzine ruvengo senge zvivakwa zvemugungwa, mabhiriji, uye nzvimbo dzekuchenesa mvura yetsvina.
Pamusoro pe, iyo yunifomu kupararira kwekongiri bits inosimudzira kunyange yakawedzera kukwana hydration, kukurumidza kusimba kuwana uye kuderedza shrinkage kutyora kutyisidzira.
Tsvagiridzo dzakaratidza kuti kongiri inosanganisira NSF inogona kuita makumi maviri– 40% yakakwirira compressive simba pa 28 mazuva akaenzaniswa nekugadzirisa zvinosanganiswa, kuvimba nemusanganiswa maitiro uye kurapa matambudziko.
3. Kuenderana uye Mashandisirwo Zvinhu Zvekufunga
3.1 Kukurukurirana neConcrete uye Supplementary Materials
Kuita kwe naphthalene sulfonate superplasticizer kunogona kusiyana zvakanyanya zvichienderana nekugadzirwa kwe simenti., kunyanya C TWO A (tricalcium aluminate) zvinhu uye alkali madhigirii.
Makongiriti ane C SIX A yakakwira ane katsika kekushambadza zvakanyanya NSF nekuda kwekusimba kwemagetsi emagetsi., zvingangoda makuru makuru kuti awane mvura yaunoda.
Saizvozvowo, kuvapo kwezvimwe cementitious zvinhu (SCMs) zvakadai sedota renhunzi, slag, kana silica fume inokanganisa adsorption kinetics uye rheological maitiro; semuyenzaniso, fly ash inogona kupedzisa kune adsorption nzvimbo, kushandura dose inoshanda.
Kubatanidza NSF nezvimwe zvinosanganiswa senge retarders, accelerators, kana air-entraining agents vanoda kungwarira kuenderana kutariswa kuti ugare wakajeka pakusangana kwakashata sekukurumidza kurasikirwa nekudonha kana kuunganidza flash..
Batching kutevedzana– kana NSF yakawedzerwa munguva yakapfuura, yose, kana mushure mekusanganisa– zvinokanganisawo mashandiro ekuparadzira uye zvinofanirwa kuve zvakaenzana mumatanho makuru.
3.2 Zvakatipoteredza uye Mabatiro Anoita
NSF inowanikwa mumhando dzemvura uye hupfu, nemafomu emvura uchishandisa dosing iri nyore uye nekukurumidza kunyungudika mukusanganisa mvura.
Kunyange zvazvo kazhinji yakagadzikana pasi pematambudziko ekuchengetedza, kutarisana nechando chakawedzerwa kunogona kukonzera kunaya kwemvura, uye kudziya kwakanyanya kunogona kukanganisa macheni epolymer nenguva.
Kubva pakuona kwezvakatipoteredza, NSF inotorwa mukutariswa yakaderera chepfu uye isiri-corrosive, kunyangwe nzira dzekubata dzakafanira dzinofanira kuteverwa kudzivirira kufemerwa kwehupfu kana kuzvimba kweganda.
Kugadzirwa kwayo kunosanganisira petrochemical by-zvigadzirwa uye formaldehyde, kusimudza kugadzikana kwekunetseka kwakafambisa tsvagiridzo muzvidzidzo zvebio-based uye greener synthesis makosi.
4. Industrial Applications uye Ramangwana Outlook
4.1 Shandisa muPrecast, Ready-Mix, uye High-Simba Concrete
Naphthalene sulfonate superplasticizer inoshandiswa zvakanyanya mukugadzirwa kwekongiri, uko kutonga chaiko pamusoro penguva yekuseta, pamusoro penzvimbo kupera, uye kurongeka kwedimensional kwakakosha.
Mune yakagadzirira-yakasanganiswa kongiri, inoita kuti zvikwanisike zvekufambisa kure-kure pasina kurega kushanda pakusvika pakuvaka mawebhusaiti.
Ichowo chikamu chakakosha mukongiri yakakwirira-yakasimba (HSC) uye ultra-high-performance kongiri (UHPC), uko mareshiyo ew/c akaderera zvikuru anoshevedzwa kuti aite kudzvanyirira masimba anopfuura 100 MPa.
Tunnel linings, zvivako zvepamusoro-soro, uye prestressed kongiri zvinhu zvinobatsira kubva pakuwedzera hupenyu hurefu uye kuita kwemaitiro kunopihwa neNSF-yakagadziridzwa masanganiswa..
4.2 Maitiro uye Matambudziko muAdmixture Modern Technology
Pasinei nekuonekwa kwepamusoro pepolycarboxylate ether (PCE) superplasticizers ine yepamusoro yekuora mwoyo kuchengetedza uye yakaderera dosage zvinoda, NSF inogara inowanzo shandiswa semhedzisiro yekudhura kwayo uye yakaedzwa uye yakaedzwa kushanda kwayo.
Kuenderera mberi kutsvagisa kudzidza kunotarisa kune dzakachinjika masisitimu anosanganisira NSF nemaPCE kana nanomaterials kukwirisa rheology uye kukura kwesimba..
Matanho ekuvandudza biodegradability, yakaderera formaldehyde inobuda mukati mekugadzirwa, uye kusimudzira kuenderana neakaderera-kabhoni simende inoratidza shanduko yemusika kuenda kune zvekugara zvekuvaka.
Mukupedzisa, naphthalene sulfonate superplasticizer inomiririra ibwe rekona tekinoroji yemazuva ano mune yemazuva ano kongiri engineering, kubatanidza nzvimbo pakati pemaitiro echinyakare uye epamusoro chigadzirwa kunyatsoshanda.
Kugona kwayo kushandura kongiri kuti ive iri nyore asi yakatsiga musanganiswa inoenderera mberi nekutsigira kufambira mberi kwezvivakwa zvepasirese, kunyangwe chizvarwa chinotevera chinosanganiswa chichifambira mberi.
5. Distributor
Cabr-Concrete mutengesi weConcrete Admixture ine pamusoro 12 makore echiitiko mu nano-kuvaka simba kuchengetedza uye nanotechnology kusimudzira. Inobvuma kubhadhara kuburikidza neCredit Card, T/T, West Union uye Paypal. TRUNNANO ichaendesa zvinhu kune vatengi mhiri kwemakungwa kuburikidza neFedEx, DHL, nemhepo, kana nomugungwa. Kana iwe uchitsvaga yemhando yepamusoro Concrete Admixture, ndapota inzwa wakasununguka kutibata nesu uye kutumira kubvunza.
Tags: sodium naphthalene,polycarboxylate ether, Naphthalene Sulfonate Superplasticizer
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