Putty hmoov feem ntau yog tsim los ntawm cov khoom siv ua yeeb yaj kiab (cov ntaub ntawv sib txuas), cov khoom ntim, cov dej khaws cia, cov thickeners, defoamers, thiab lwm yam. Cov organic chemical raw cov ntaub ntawv hauv putty hmoov feem ntau suav nrog: cellulose, pregelatinized starch, starch ether, polyvinyl cawv, dispersible latex hmoov, thiab lwm yam. Kev ua tau zoo thiab kev siv ntau yam tshuaj raw cov ntaub ntawv raug soj ntsuam ib los ntawm ib qho hauv qab no.
1: Txhais thiab qhov sib txawv ntawm fiber ntau, cellulose thiab cellulose ether
Fiber (Asmeskas: Fiber; Lus Askiv: Fiber) yog hais txog ib yam khoom uas tsim los ntawm cov filaments tsis tu ncua. Xws li cog fiber ntau, tsiaj plaub hau, silk fiber, hluavtaws fiber, thiab lwm yam.
Cellulose yog macromolecular polysaccharide uas tsim los ntawm cov piam thaj thiab yog cov khoom tseem ceeb ntawm cov phab ntsa ntawm cov nroj tsuag. Nyob rau hauv chav tsev kub, cellulose tsis soluble nyob rau hauv dej los yog nyob rau hauv cov organic solvents. Cov ntsiab lus cellulose ntawm paj rwb yog ze rau 100%, ua rau nws yog qhov ntshiab tshaj plaws ntawm cellulose. Hauv cov ntoo, cellulose suav txog 40-50%, thiab muaj 10-30% hemicellulose thiab 20-30% lignin. Qhov txawv ntawm cellulose (txoj cai) thiab starch (sab laug):
Feem ntau hais lus, ob qho tib si hmoov txhuv nplej siab thiab cellulose yog macromolecular polysaccharides, thiab cov mis molecular tuaj yeem qhia tau tias yog (C6H10O5)n. Qhov hnyav molecular ntawm cellulose loj dua cov hmoov txhuv nplej siab, thiab cellulose tuaj yeem decomposed los tsim cov hmoov txhuv nplej siab. Cellulose yog D-glucose thiab β-1,4 glycoside Macromolecular polysaccharides tsim los ntawm cov ntawv cog lus, thaum cov hmoov txhuv nplej siab yog tsim los ntawm α-1,4 glycosidic bonds. Cellulose feem ntau tsis muaj ceg, tab sis cov hmoov txhuv nplej siab yog branched los ntawm 1,6 glycosidic bonds. Cellulose tsis zoo soluble hauv dej, thaum starch yog soluble hauv dej kub. Cellulose yog insensitive rau amylase thiab tsis tig xiav thaum raug iodine.
Lub npe Askiv ntawm cellulose ether yog cellulose ether, uas yog ib qho polymer compound nrog ether qauv ua los ntawm cellulose. Nws yog cov khoom ntawm cov tshuaj tiv thaiv ntawm cellulose (cog) nrog etherification tus neeg sawv cev. Raws li cov qauv tshuaj cais tawm ntawm cov khoom hloov tom qab etherification, nws tuaj yeem muab faib ua anionic, cationic thiab nonionic ethers. Raws li tus neeg sawv cev etherification siv, muaj methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose cellulose, cyanoethyl cellulose, benzyl cyanoethyl cellulose thiab carboxymethyl cellulose cellulose, thiab lwm yam. Hauv kev tsim kho kev lag luam, cellulose ether tseem hu ua cellulose, uas yog lub npe tsis raug, thiab nws yog hu ua cellulose (los yog ether) kom raug. Thickening mechanism ntawm cellulose ether thickener Cellulose ether thickener yog non-ionic thickener, uas thickens mas los ntawm hydration thiab entanglement ntawm molecules. Lub polymer saw ntawm cellulose ether yog ib qho yooj yim los tsim hydrogen daim ntawv cog lus nrog dej nyob rau hauv dej, thiab cov hydrogen daim ntawv cog lus ua rau nws muaj siab hydration thiab inter-molecular entanglement.
Thaum cov cellulose ether thickener ntxiv rau cov xim latex, nws nqus dej ntau, ua rau nws tus kheej ntim kom nthuav dav, txo qhov chaw dawb rau cov xim, cov khoom ntim thiab cov latex; Nyob rau tib lub sijhawm, cov cellulose ether molecular chains yog intertwined los tsim ib tug peb-dimensional network qauv, thiab cov xim Fillers thiab latex hais yog nyob rau hauv nruab nrab ntawm lub mesh thiab tsis tuaj yeem ntws dawb. Raws li ob qho kev cuam tshuam no, viscosity ntawm lub kaw lus tau txhim kho! Ua tiav cov nyhuv thickening peb xav tau!
Hom cellulose (ether): Feem ntau hais lus, cellulose nyob rau hauv kev ua lag luam yog hais txog hydroxypropyl, hydroxyethyl yog tsuas yog siv rau cov xim, latex xim, thiab hydroxypropyl methylcellulose yog siv rau mortar, putty thiab lwm yam khoom. Carboxymethyl cellulose yog siv rau cov hmoov putty zoo tib yam rau sab hauv phab ntsa. Carboxymethyl cellulose, tseem hu ua sodium carboxymethyl cellulose, hu ua (CMC): Carboxymethyl cellulose (CMC) yog cov tsis muaj tshuaj lom, tsis muaj ntxhiab tsw dawb flocculent hmoov nrog kev ua haujlwm ruaj khov thiab yooj yim soluble hauv dej. Alkaline los yog alkaline pob tshab viscous kua, soluble nyob rau hauv lwm yam dej-soluble kua nplaum thiab resins, insoluble nyob rau hauv organic solvents xws li ethanol. CMC tuaj yeem siv los ua binder, thickener, suspending agent, emulsifier, dispersant, stabilizer, sizing agent, thiab lwm yam Carboxymethyl cellulose (CMC) yog cov khoom uas muaj qhov loj tshaj plaws, qhov dav ntawm kev siv, thiab kev siv yooj yim tshaj plaws ntawm cellulose ethers. , feem ntau hu ua "kev lag luam monosodium glutamate". Carboxymethyl cellulose muaj lub luag haujlwm ntawm kev khi, thickening, ntxiv dag zog, emulsifying, dej tuav thiab ncua kev kawm ntawv. 1. Daim ntawv thov ntawm sodium carboxymethyl cellulose nyob rau hauv kev lag luam khoom noj khoom haus: sodium carboxymethyl cellulose tsis yog tsuas yog ib tug zoo emulsification stabilizer thiab thickener nyob rau hauv cov zaub mov daim ntaub ntawv, tab sis kuj muaj zoo heev khov thiab melting stability, thiab yuav txhim khu lub tsw ntawm cov khoom prolongs lub sij hawm cia. 2. Kev siv cov sodium carboxymethyl cellulose hauv kev lag luam kws tshuaj: nws tuaj yeem siv los ua emulsion stabilizer rau kev txhaj tshuaj, cov ntawv khi thiab cov yeeb yaj kiab tsim rau cov ntsiav tshuaj hauv kev lag luam tshuaj. 3. CMC tuaj yeem siv los ua tus neeg sawv cev tiv thaiv kab mob, emulsifier, dispersant, leveling agent, thiab nplaum rau txheej txheej. Nws tuaj yeem ua rau cov ntsiab lus ntawm cov txheej txheem sib npaug sib npaug hauv cov kuab tshuaj, kom cov txheej txheem tsis delaminate rau lub sijhawm ntev. Nws kuj yog siv dav hauv cov xim. 4. Sodium carboxymethyl cellulose tuaj yeem siv los ua flocculant, chelating tus neeg sawv cev, emulsifier, thickener, dej tuav tus neeg saib xyuas, sizing tus neeg saib xyuas, cov khoom siv zaj duab xis, thiab lwm yam. Nws kuj yog siv dav hauv electronics, tshuaj tua kab, tawv, plastics, luam ntawv, ceramics, Kev lag luam tshuaj lom neeg txhua hnub thiab lwm yam kev lag luam, thiab vim nws qhov kev ua tau zoo heev thiab kev siv ntau yam, nws tseem niaj hnub tsim cov ntawv thov tshiab, thiab kev lag luam zeem muag yog dav heev. Daim ntawv thov piv txwv: sab nrauv phab ntsa putty hmoov mis sab hauv phab ntsa putty hmoov formula 1 Shuangfei hmoov: 600-650kg 1 Shuangfei hmoov: 1000kg 2 Dawb cement: 400-350kg 2 Pregelatinized starch: 5-6kg 3 Pregelatinized starch: 5 -6kg 3 CMC: 1. -15kg lossis HPMC2.5-3kg4 CMC: 10-15kg los yog HPMC2.5-3kg Putty hmoov ntxiv carboxymethyl cellulose CMC, pregelatinized starch kev ua tau zoo: ① Muaj peev xwm ceev Thickening; kev sib txuas ua haujlwm, thiab qee qhov tuav dej; ② Txhim kho lub peev xwm los tiv thaiv zawv zawg (sagging) ntawm cov khoom siv, txhim kho kev ua haujlwm ntawm cov khoom siv, thiab ua kom lub lag luam smoother; ncua lub sijhawm qhib ntawm cov khoom siv. ③ Tom qab ziab, qhov saum npoo yog du, tsis poob ntawm hmoov, muaj cov yeeb yaj kiab zoo thiab tsis muaj khawb. ④ Qhov tseem ceeb tshaj, qhov ntau npaum li cas me me, thiab qhov ntau npaum li cas tuaj yeem ua tiav cov txiaj ntsig siab; Nyob rau tib lub sijhawm, tus nqi tsim khoom raug txo los ntawm 10-20%. Nyob rau hauv kev tsim kho kev lag luam, CMC yog siv nyob rau hauv zus tau tej cov pob zeb preforms, uas yuav txo tau dej poob thiab ua raws li ib tug retarder. Txawm hais tias kev tsim kho loj, nws tuaj yeem txhim kho lub zog ntawm pob zeb thiab pab txhawb cov preforms kom poob tawm ntawm daim nyias nyias. Lwm lub hom phiaj tseem ceeb yog txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nws, nws yog ib qho tseem ceeb ntawm cov txheej txheem tseem ceeb yog khawb cov phab ntsa dawb thiab cov hmoov sib tov, cov hmoov sib tov tuaj yeem txuag tau ntau cov ntaub ntawv hauv tsev thiab txhim kho cov txheej txheem tiv thaiv thiab ci ntsa iab ntawm phab ntsa. Hydroxyethyl methylcellulose, hu ua (HEC): chemical formula:
1. Kev taw qhia txog hydroxyethyl cellulose: Hydroxyethyl cellulose (HEC) yog ib qho uas tsis yog-ionic cellulose ether ua los ntawm cov khoom siv ntuj polymer cellulose los ntawm cov txheej txheem tshuaj lom neeg. Nws yog ib qho tsis muaj ntxhiab, tsis qab, tsis muaj tshuaj lom dawb hmoov los yog granule, uas tuaj yeem yaj hauv dej txias los tsim cov kua nplaum pob tshab, thiab kev sib cais tsis cuam tshuam los ntawm tus nqi pH. Nws muaj thickening, khi, dispersing, emulsifying, zaj duab xis-forming, suspending, adsorbing, nto active, noo noo-retaining thiab ntsev-resistant zog.
2. Technical indicators, As Project standard Appearance Dawb los yog yellowish hmoov Molar hloov (MS) 1.8-2.8 Dej insoluble teeb meem (%) ≤ 0.5 Poob ntawm ziab (WT%) ≤ 5.0 Residue on ignition (WT%) ≤ 5.0 PH tus nqi 6.0- 8.5 viscosity (mPa.s) 2%, 30000, 60000, 100000 aqueous tov ntawm 20 ° C Peb, qhov zoo ntawm hydroxyethyl cellulose High thickening nyhuv
● Hydroxyethyl cellulose muab cov txheej txheem zoo heev rau cov txheej txheem latex, tshwj xeeb tshaj yog cov txheej PVA siab. Tsis muaj flocculation tshwm sim thaum cov xim yog tuab tuab.
● Hydroxyethyl cellulose muaj cov nyhuv thickening dua. Nws tuaj yeem txo qhov ntau npaum li cas, txhim kho kev lag luam ntawm cov mis, thiab txhim kho cov tshuaj txhuam hniav ntawm txheej.
Zoo heev rheological zog
● Cov tshuaj aqueous ntawm hydroxyethyl cellulose yog ib qho uas tsis yog-Newtonian system, thiab cov cuab yeej ntawm nws cov tshuaj hu ua thixotropy.
● Nyob rau hauv lub xeev zoo li qub, tom qab cov khoom tiav lawm, txheej txheej txheej tswj qhov zoo tshaj plaws thickening thiab qhib lub xeev.
● Nyob rau hauv lub xeev ntawm pouring, lub kaw lus tswj ib tug nruab nrab viscosity, kom cov khoom muaj zoo fluidity thiab yuav tsis txaws.
● Thaum siv los ntawm txhuam thiab cov menyuam, cov khoom kis tau yooj yim ntawm cov substrate. Nws yog qhov yooj yim rau kev tsim kho. Nyob rau tib lub sij hawm, nws muaj zoo splash kuj.
● Thaum kawg, tom qab txheej txheej tiav lawm, lub viscosity ntawm lub kaw lus rov zoo tam sim, thiab txheej tam sim ntawd sags.
Dispersibility thiab Solubility
● Hydroxyethyl cellulose yog kho nrog ncua kev tawg, uas tuaj yeem tiv thaiv agglomeration zoo thaum cov hmoov qhuav ntxiv. Tom qab xyuas kom meej tias HEC hmoov yog zoo dispersed, pib hydration.
● Hydroxyethyl cellulose nrog kev kho saum npoo kom zoo tuaj yeem kho tus nqi tawg thiab viscosity nce tus nqi ntawm cov khoom.
cia ruaj khov
● Hydroxyethyl cellulose muaj cov khoom zoo los tiv thaiv mildew thiab muab sijhawm rau cov xim txaus. Zoo tiv thaiv pigments thiab fillers los ntawm kev daws teeb meem. 4. Yuav siv li cas: (1) Ntxiv ncaj qha thaum lub sijhawm tsim khoom Cov qauv no yog qhov yooj yim tshaj plaws thiab siv sijhawm luv tshaj plaws. Cov kauj ruam yog raws li nram no: 1. Ntxiv dej ntshiab rau hauv ib lub thoob loj uas muaj lub siab shear agitator. 2. Pib do tsis tu ncua ntawm qhov ceev thiab maj mam sieve cov hydroxyethyl cellulose rau hauv cov tshuaj sib npaug. 3. Ntxiv stirring kom txog thaum tag nrho cov khoom yog tsau. 4. Tom qab ntawd ntxiv cov tshuaj tua kab mob thiab ntau yam tshuaj ntxiv. Xws li cov pigments, dispersing aids, ammonia dej, thiab lwm yam. 5. Do kom txog thaum tag nrho cov hydroxyethyl cellulose yog yaj tag (lub viscosity ntawm cov tshuaj nce ntau) ua ntej ntxiv lwm yam khoom nyob rau hauv cov mis rau cov tshuaj tiv thaiv. (2) Npaj cov cawv txiv hmab rau kev siv: Txoj kev no yog npaj cov cawv niam nrog qhov siab dua ua ntej, thiab tom qab ntawd ntxiv rau cov khoom. Qhov kom zoo dua ntawm txoj kev no yog tias nws muaj qhov yooj yim dua thiab tuaj yeem ncaj qha ntxiv rau cov khoom tiav, tab sis nws yuav tsum tau khaws cia kom zoo. Cov kauj ruam zoo ib yam li cov kauj ruam (1–4) nyob rau hauv txoj kev (1): qhov txawv yog tias tsis muaj high-shear agitator yog xav tau, tsuas yog ib co agitators uas txaus lub hwj chim kom hydroxyethyl cellulose uniformly dispersed nyob rau hauv cov tshuaj, txuas ntxiv stirring kom txog thaum tag nrho yaj. mus rau hauv ib tug viscous tov. Nws yuav tsum tau muab sau tseg tias tus neeg sawv cev antifungal yuav tsum tau ntxiv rau niam cawv kom sai li sai tau. V. Daim ntawv thov 1. Siv dej-raws li latex xim: HEC, raws li kev tiv thaiv colloid, tuaj yeem siv rau hauv vinyl acetate emulsion polymerization los txhim kho kev ruaj ntseg ntawm cov polymerization system nyob rau hauv ntau yam ntawm pH qhov tseem ceeb. Hauv kev tsim cov khoom tiav, cov khoom siv ntxiv xws li pigments thiab fillers yog siv los ua kom tsis sib haum, ruaj khov thiab muab cov nyhuv thickening. Nws kuj tseem tuaj yeem siv los ua cov khoom tawg rau cov khoom ncua kev kawm xws li styrene, acrylate, thiab propylene. Siv rau hauv cov xim latex tuaj yeem txhim kho thickening thiab leveling kev ua tau zoo. 2. Nyob rau hauv cov nqe lus ntawm cov roj drilling: HEC yog siv raws li ib tug thickener nyob rau hauv ntau yam av nkos yuav tsum tau rau drilling, zoo kho, zoo cementing thiab fracturing hauj lwm, kom cov av nkos tau zoo fluidity thiab stability. Txhim kho cov av nkos nqa lub peev xwm thaum lub sijhawm drilling, thiab tiv thaiv kom tsis txhob muaj dej ntau los ntawm kev nkag mus rau hauv cov roj txheej los ntawm cov av nkos, stabilizing lub peev xwm ntawm cov roj txheej. 3. Siv rau hauv kev tsim kho vaj tse thiab cov ntaub ntawv hauv tsev: Vim nws lub peev xwm khaws cov dej muaj zog, HEC yog cov thickener zoo thiab khi rau cov cement slurry thiab mortar. Nws tuaj yeem muab sib xyaw rau hauv mortar los txhim kho fluidity thiab kev tsim kho kev ua haujlwm, thiab ua kom lub sijhawm ntev ntawm cov dej evaporation, txhim kho qhov pib lub zog ntawm pob zeb thiab tsis txhob tawg. Nws tuaj yeem txhim kho nws cov dej tuav thiab kev sib txuas lub zog thaum siv rau plastering plaster, bonding plaster, thiab plaster putty. 4. Siv cov tshuaj txhuam hniav: vim nws muaj zog tiv thaiv ntsev thiab kua qaub, HEC tuaj yeem ua kom muaj kev ruaj ntseg ntawm cov tshuaj txhuam hniav. Tsis tas li ntawd, cov tshuaj txhuam hniav tsis yooj yim kom qhuav vim nws cov dej ruaj khov thiab muaj peev xwm emulsifying. 5. Thaum siv rau hauv dej-raws li tus number case, HEC tuaj yeem ua rau tus number case qhuav sai thiab impermeable. Tsis tas li ntawd, HEC kuj tau siv dav hauv textile printing thiab dyeing, papermaking, tshuaj txhua hnub thiab lwm yam. 6. Kev ceev faj rau kev siv HEC: a. Hygroscopicity: Txhua hom hydroxyethyl cellulose HEC yog hygroscopic. Cov ntsiab lus dej feem ntau yog qis dua 5% thaum tawm hauv lub Hoobkas, tab sis vim muaj kev thauj mus los sib txawv thiab chaw cia khoom, cov ntsiab lus dej yuav siab dua thaum tawm hauv lub hoobkas. Thaum siv nws, tsuas yog ntsuas cov ntsiab lus dej thiab txiav tawm qhov hnyav ntawm cov dej thaum xam. Tsis txhob nthuav tawm rau qhov chaw. b. Plua plav hmoov yog tawg: yog tias tag nrho cov organic hmoov thiab hydroxyethyl cellulose hmoov av nyob rau hauv cov huab cua ntawm ib qho kev faib ua feem, lawv kuj yuav tawg thaum lawv ntsib qhov hluav taws kub. Kev ua haujlwm kom raug yuav tsum tau ua kom tsis txhob muaj hmoov av hmoov av hauv qhov chaw kom ntau li ntau tau. 7. Ntim specifications: Cov khoom yog ua los ntawm cov ntawv-yas composite hnab lined nrog polyethylene puab lub hnab, nrog ib tug luj ntawm 25 kg. Khaws rau hauv qhov chaw cua thiab qhuav hauv tsev thaum khaws cia, thiab xyuam xim rau cov dej noo. Ua tib zoo saib xyuas los nag thiab tiv thaiv tshav ntuj thaum caij tsheb thauj mus los. Hydroxypropyl methyl cellulose, hu ua (HPMC): hydroxypropyl methyl cellulose (HPMC) yog cov hmoov tsis muaj ntxhiab, tsis qab, tsis muaj tshuaj lom, muaj ob hom instant thiab tsis yog tam sim, instant, thaum ntsib nrog dej txias, nws sai sai. disperses thiab ploj mus rau hauv dej. Lub sijhawm no, cov kua tsis muaj viscosity. Tom qab li 2 feeb, lub viscosity ntawm cov kua nce, tsim ib pob tshab viscous colloid. Hom tsis yog tam sim no: Nws tsuas yog siv tau rau hauv cov hmoov qhuav qhuav xws li cov hmoov putty thiab cement mortar. Nws tsis tuaj yeem siv rau hauv cov kua nplaum thiab pleev xim, thiab yuav muaj clumping.
Post lub sij hawm: Dec-26-2022