Sodium pyrophosphate yog ib qho tseem ceeb sib xyaw ua ke hauv cov khoom siv hluav taws xob var ntawm cov tshuaj lom neeg kev lag luam. Nws ua lub luag haujlwm tsis tseem ceeb hauv kev ua zaub mov noj, kev lag luam, thiab lwm yam kev lag luam vim nws cov tshuaj tshwj xeeb, thiab muaj kev sib raug zoo rau tib neeg lub neej thiab kev txhim kho ntawm ntau yam kev lag luam. Tom ntej no, cia relve rau hauv cov sodumy pyrophosphate ua ke.
1, Cov yam ntxwv yooj yim ntawm sodium pyrophosphate
Sodium pyrophosphate yog cov hmoov dawb lossis crystalline. Nws tuaj yeem muab faib ua cov foos thiab cov ntaub ntawv Decahydrate. Anhydrous sodium pyrophosphate muaj qhov sib npaug ntawm 2.534 thiab lub zog melting ntawm 880 degree; Tus txheeb ze ceev ntawm Dilahydrate yog 1.824, thiab nws poob nws cov dej khov kho ntawm 100 degree. Sodium pyrophosphat yog yooj yim soluble hauv dej, thiab nws cov kua aqueous yog alkaline. Nws maj hydrolyzes nyob rau hauv dej los tsim disodium hydrogen phosphate. Cov kev ua kom cov roj kas cov yam ntxwv ntawm hydrolysis cov ntawv pov thawj tshwj xeeb cov tshuaj lom neeg thiab cov ntawv thov siv tau. Sodium pyrophosphate kuj muaj peev xwm ua rau cov hlau hluavtaws nyuaj thiab cov qauv sib zog ua ntau yam hlau, uas muaj cov ntawv thov tseem ceeb hauv ntau thaj teb.
2, npaj txoj kev npaj
(1) sodium dihyrogen phosphate txoj kev
Cua sov disodium hydrogen phosphate rau ib qho kub thiab txias rau lub cev qhuav dej thiab ua rau nws ua kom huv si rau hauv cov sodium pyrophosphate. Firstly, qhuav disodium hydrogen phosphate ntawm qhov kub kom tshem tawm cov dej sov, thiab tom qab ntawd ntxiv cov tshuaj tiv thaiv lub cev ntawm nws cov lwg me me. Tom qab cov tshuaj tiv thaiv tiav, cov sodium pyrophosphatate cov khoom lag luam xws li txias thiab tsoo. Hom qauv no muaj qhov txheej txheem yooj yim thiab ntau yam ntawm cov khoom siv raw khoom, ua rau nws txoj kev npaj tau siv. Txawm li cas los xij, nyob rau hauv cov txheej txheem ntau lawm, kev tswj hwm ntawm qhov kub thiab cov kev tiv thaiv lub sijhawm yuav tsum muaj qhov zoo thiab huv ntawm cov khoom.
(2) cov tshuaj tiv thaiv cov tshuaj phosphoric acid thiab dej qab zib tshauv
Siv cov kua qaub phosphoric thiab dej qab zib tshauv ua cov ntaub ntawv raw, hnov mob hauv qee yam ua feem. Firstly, sib tov phosphoric acid nrog dej qab zib tshauv, ua kom muaj kev sib xyaw ntawm cov tshuaj tiv thaiv neutralen phosphate thiab sodium dihydrogen phosphate. Tom qab ntawd txuas ntxiv cov cua sov mus rau kom lub cev qhuav dej ntxiv thiab ua kom nws ua cov sodium pyrophosphate. Qhov zoo dua ntawm txoj kev no yog tias cov txheej txheem tshuaj tiv thaiv yog qhov ruaj khov thiab cov khoom siv tau siab ntawm cov ntaub ntawv raw thiab cov nqi siab ntau lawm.
3, dav siv tau cov teb
(1) Kev lag luam khoom noj khoom haus
Nyob rau hauv kev lag luam khoom noj khoom haus, sodium pyrophosphate yog cov zaub mov muaj ntau yam zaub mov ntxiv. Feem ntau nws siv los ua dej tuav dej, uas tuaj yeem txhim kho cov dej tuav cov khoom, thiab lwm yam khoom noj tshiab, thiab muaj kua thaum ua thiab chaw cia khoom. Piv txwv li, ntxiv sodium pyrophosphate thaum lub sij hawm ua cov protein, thiab lwm yam tuaj yeem hloov kho cov txiaj ntsig, thiab txhim kho cov txiaj ntsig thiab cov khoom lag luam zoo. Sodium pyrophosphate kuj tseem tuaj yeem siv los ua cov tshuaj uas muaj poov xab. Hauv cov khoom ci, nws ua rau cov tshuaj acidic los tsim cov roj carbon dioxide, ua rau cov khoom noj kom nthuav dav thiab muag. Nyob rau tib lub sijhawm, nws muaj qee cov tshuaj tiv thaiv kab mob antioxidant, uas tuaj yeem ncua cov oxidation thiab tsis zoo ntawm cov zaub mov thiab txuas lub txee lub neej ntawm cov zaub mov.
(2) Kev Lag Luam Industrial
Hauv kev lag luam, sodium pyrophosphate tau siv dav. Hauv kev lag luam electroplating, raws li ib qho tseem ceeb chelating tus neeg sawv cev, tswj cov txheej txheem hluav taws xob ntau dua thiab kev sib txuam ntawm cov txheej txheem, thiab feem ntau siv nyob rau hauv electroplating tooj liab, zinc, npib tsib xee thiab lwm yam hlau. Hauv kev lag luam xab npum, sodium pyrophosphate tuaj yeem siv los ua cov tshuaj ntxuav kom huv, thiab kuj ua kom muaj zog ntawm cov roj calcium thiab magnesium thiab magnesium ntawm kev ntxuav hauj lwm zoo. Tsis tas li ntawd, hauv cov ntawv kev lag luam, nws tuaj yeem siv rau daim ntawv sizing, txhim kho nws cov dej tsis kam thiab muaj zog; Nyob rau hauv kev luam ntawv thiab dye zas kev lag luam, cov txheej txheem xws li desizing thiab boiling rau cov ntaub thiab pulp los ntawm cov ntaub, txhim kho cov luam ntawv thiab ntxig cov nyhuv thiab zas nyees.
(3) lwm daim teb
Hauv kev kho cov dej, sodium pyrophosphate tuaj yeem siv ua cov dej khov kho los tiv thaiv cov dej calcium thiab ntsuas lub luag haujlwm hauv kev tiv thaiv thiab kev tiv thaiv cov khoom lag luam thiab cov ntawv sau. Hauv thaj chaw ntawm cov tshuaj, txawm hais tias nws daim ntawv thov kuj tsawg tsawg, sodium pyrophosphate tuaj yeem koom nrog cov khoom siv tshuaj yeeb yaj kiab nrog cov qauv qauv tshwj xeeb. Hauv kev lag luam ceramic, nws tau siv los txhim kho qhov muaj feramic lub cev thiab cov khoom ntawm glazes, ua cov khoom lag luam ceramic denser thiab smoother.
4, kev loj hlob thiab kev cov nyom
Nrog kev txhim kho txuas ntxiv ntawm ntau yam kev lag luam thiab thev naus laus zis kev nce qib, daim ntawv thov kev cia siab ntawm sodium pyrophosphate kuj niaj hnub nthuav dav. Hauv kev lag luam khoom noj khoom haus, cov neeg siv khoom tau xav tau siab ntau ntxiv rau cov khoom noj ntxiv rau cov khoom noj khoom haus kom tsis tu ncua xws li sofium pyrophosphate thiab tsim kev nyab xeeb dua tshiab thev naus laus zis. Nyob rau hauv kev lag luam teb, nrog ntau txoj kev xav tau ib puag ncig, muaj ntau dua tau muab tso rau ib puag ncig kev ua haujlwm ntawm cov txheej txheem ntau lawm thiab daim ntawv thov ntawm cov txheej txheem ntau lawm thiab cov ntawv thov ntawm cov khoom siv ntau lawm. Piv txwv li, hauv kev lag luam xab npum, nws yog ib qho tsim nyog los tsim cov kev hloov kho ib puag ncig ib puag ncig lossis txhim kho kev siv sodium pyrophosphate los txo nws cov kev cuam tshuam rau ib puag ncig. Lub caij no, nrog kev hloov kho lub tshuab ua kom muaj kev hloov tshiab ntawm cov tshuab sodium pyrophosphate hauv qee cov duab tawm tshiab tau tshawb nrhiav. Piv txwv, hauv cov txheej txheem npaj ntawm cov khoom siv hluav taws xob tshiab, nws cov yam ntxwv ntawm chelating hlau ions tuaj yeem ua lub luag haujlwm tseem ceeb.
Txawm li cas los xij, cov sodium pyrophosphate kev lag luam kuj tau ntsib qee qhov kev cov nyom. Ntawm ib sab tes, hloov nyob rau hauv Raw cov nqi tsim khoom tuaj yeem muaj kev cuam tshuam tseem ceeb ntawm cov nqi ntau lawm los txo tus nqi. Ntawm qhov tod tes, qhov kev siv hluav taws xob yuav tsum tau cov lag luam tsis tu ncua ua kom tau cov khoom lag luam zoo, thiab txhim kho ntau cov khoom lag luam muaj zog ntxiv thiab cov cuab yeej siv cov cuab yeej siv.
Sodium pyrophosphate, raws li ib qho kev siv tshuaj lom neeg tseem ceeb, ua si tseem ceeb tshaj plaws hauv ntau yam kev lag luam vim nws cov kev siv thiab ntau cov kev siv. Nyob rau hauv txoj kev txhim kho yav tom ntej, nrog kev nce qib nroos ntawm thev naus laus zis thiab kev lag luam hauv kev lag luam los ntawm txhua tog neeg txoj kev sib tw thiab txhawb nqa kev txhim kho ntau yam Cov sodium pyrophosphate kev lag luam.