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Daim Ntawv Thov Cov Tshuaj Surfactants Uas Muaj Cov Ua Npuas Ncauj Tsawg Hauv Kev Ntxuav Hauv Chaw Lag Luam
Hauv kev ntxuav hauv kev lag luam, ua npuas dej tsis yog tsuas yog ua rau cov tshuaj ntxuav tsis zoo xwb tab sis kuj ua rau kev yaug nyuaj, feem ntau tso cov khoom seem, thiab tej zaum yuav ntws tawm ntawm cov khoom siv ntxuav, ua rau muaj pov tseg. Tsis tas li ntawd, ua npuas dej tuaj yeem tshem tawm cov surfactants ntawm cov kua ntxuav. Yog li ntawd, cov khoom ntxuav uas muaj npuas dej tsawg yog...Nyeem ntxiv -
Kev tsis ruaj khov ntawm cov emulsions (flocculation, coalescence, stratification thiab demulsification)
Muaj ntau qhov tshwm sim ntawm emulsion instability: flocculation, coalescence, stratification (lossis sedimentation), demulsification, theem inversion thiab Ostwald ripening. 1.Flocculation Cov dej ntws tawm hauv cov emulsion aggregate los tsim cov pawg ntawm peb-seem droplets, uas yog ...Nyeem ntxiv -
Kev faib tawm thiab kev siv cov tshuaj ntxuav
Cov Tshuaj Ntxuav Tsev Neeg Kev ntxuav tsev neeg yog hais txog kev ntxuav thiab kev saib xyuas cov tsev lossis cov khoom siv hauv kev lag luam, xws li ntxuav cov plag tsev, phab ntsa, rooj tog, ntaub pua plag, qhov rooj, qhov rai, thiab chav dej, nrog rau kev ntxuav cov pob zeb, ntoo, hlau, thiab iav. Cov tshuaj ntxuav no feem ntau...Nyeem ntxiv -
Lub mechanism ntawm kev ua haujlwm ntawm surfactant solubilizers thiab cov yam ntxwv cuam tshuam rau kev solubilization
Hauv kev tshawb fawb txog chemistry, qee cov organic compounds, vim lawv cov khoom tsis yaj lossis yaj me ntsis hauv dej, coj ntau yam tsis yooj yim rau kev siv. Txawm li cas los xij, thaum cov organic compounds no sib koom ua ke nrog surfactants, lawv cov solubility nce ntxiv, ib qho xwm txheej k ...Nyeem ntxiv -
Cationic surfactant
Cov tshuaj cationic surfactants feem ntau yog cov organic amine derivatives uas muaj nitrogen. Txij li thaum cov nitrogen atom hauv lawv cov molecules muaj ib khub electrons, nws tuaj yeem sib xyaw nrog cov hydrogen hauv cov kua qaub molecules los ntawm cov hydrogen bonds, ua rau cov amino pawg nqa ib qho posi...Nyeem ntxiv -
Kev Ua Haujlwm ntawm Cov Tshuaj Ntxuav Khaub Ncaws - Ntau Hom Tshuaj Ntxuav Khaub Ncaws
Cov tshuaj ntxuav tes ua haujlwm ntawm cov surfactants yog ib qho tseem ceeb uas muab cov surfactants rau lawv qhov kev siv tau zoo tshaj plaws. Nws koom nrog hauv lub neej txhua hnub ntawm ntau txhiab tsev neeg. Ntxiv mus, nws tau raug siv ntau dua hauv ntau yam lag luam thiab txhua yam kev tsim khoom lag luam. Cov tshuaj ntxuav tes S...Nyeem ntxiv -
Cov nyhuv tiv thaiv kev ua haujlwm ntawm surfactants
Qhov ua kom huv ntawm cov surfactants yog ib qho khoom tseem ceeb uas muab cov surfactants rau lawv cov kev siv zoo tshaj plaws. Nws koom nrog hauv lub neej txhua hnub ntawm ntau txhiab tsev neeg. Ntxiv mus, nws tau siv ntau dua hauv ntau yam lag luam thiab txhua yam kev tsim khoom lag luam. Cov nyhuv tiv thaiv hluav taws xob ntawm surfactan...Nyeem ntxiv -
Kev siv cov tshuaj surfactants uas tsis tshua muaj npuas hauv kev ntxuav kev lag luam
Hauv kev ntxuav hauv kev lag luam, ua npuas dej tsis yog tsuas yog cuam tshuam rau kev ntxuav kom huv xwb, tab sis kuj nyuaj rau yaug tawm, yooj yim muaj cov khoom seem, thiab tej zaum yuav ntws tawm ntawm cov khoom siv ntxuav, ua rau muaj khib nyiab. Ntxiv mus, ua npuas dej tuaj yeem nqa cov surfactants tawm ntawm cov kua ntxuav. Yog li ntawd, nws yog qhov tsim nyog siv cov khoom siv qis-fo...Nyeem ntxiv -
Cov txheej txheem rau kev tshem roj thiab ntxuav cov hlau!
Hauv cov txheej txheem tsim cov khoom siv hlau, cov roj nplua nyeem yog cov roj nplua nyeem uas siv los txo qhov kev sib txhuam ntawm cov khub sib txhuam thiab qeeb lawv cov hnav. Cov roj nplua nyeem kuj ua lub luag haujlwm xws li txias, ntxuav, thiab tiv thaiv kev ua qias tuaj rau cov khub sib txhuam. Txawm li cas los xij, kev siv cov roj nplua nyeem yuav...Nyeem ntxiv -
Muaj ntau yam tshuaj tua kab uas pab ntxiv rau, koj puas paub tias muaj pes tsawg hom?
Cov tshuaj ntxiv rau cov tshuaj tua kab yog cov tshuaj ntxiv thaum lub sijhawm ua cov tshuaj tua kab los txhim kho cov khoom siv lub cev thiab tshuaj lom neeg ntawm cov neeg sawv cev, tseem hu ua cov tshuaj ntxiv rau cov tshuaj tua kab. Cov tshuaj ntxiv rau lawv tus kheej tsis muaj kev ua haujlwm ntawm lub cev, tab sis lawv tuaj yeem cuam tshuam rau kev tswj hwm e...Nyeem ntxiv -
Kev Siv Cov Surfactants Hauv Cov Txheej Txheem
Kev faib tawm ntawm daim ntawv thov ntawm surfactants hauv coatings: Faib los ntawm lawv cov haujlwm, surfactants siv hauv kev lag luam txheej txheem tuaj yeem muab faib ua cov pawg hauv qab no: emulsifiers, pigment kho qhov chaw, pigment wetting thiab dispersing agents, defoamers, leveling agents, mil...Nyeem ntxiv -
Cov Khoom thiab Cov Yam Ntxwv ntawm Ob Lub Cationic Surfactants
Qhov them ntawm cationic surfactants yog qhov sib txawv ntawm anionic surfactants, yog li cationic surfactants feem ntau hu ua "inverse xab npum". Hauv lawv cov qauv tshuaj lom neeg, lawv muaj tsawg kawg yog ib pawg hydrophobic ntev thiab ib pawg hydrophilic zoo. Qhov ntev-cha...Nyeem ntxiv
