Tsev kawm ntawv qib MHEC

Qib tsev MHEC

Tsev kawm ntawv qib MHEC Methyl HydroxyethylCeluloseyog ib qho tsis muaj ntxhiab, tsis qab, tsis muaj tshuaj lom cov hmoov dawb uas tuaj yeem yaj hauv dej txias los ua cov kua nplaum pob tshab. Nws muaj cov yam ntxwv ntawm thickening, bonding, dispersion, emulsification, zaj duab xis tsim, ncua kev kawm ntawv, adsorption, gelation, deg kev ua si, noo noo retention thiab tiv thaiv colloid. Txij li cov tshuaj aqueous muaj qhov ua haujlwm ntawm qhov chaw, nws tuaj yeem siv los ua tus neeg saib xyuas kev tiv thaiv colloidal, emulsifier thiab dispersant. Lub tsev qib MHEC methyl Hydroxyethylcellulose aqueous tov muaj hydrophilicity zoo thiab yog cov dej tuav tus neeg sawv cev zoo. Hydroxyethyl methyl cellulose muaj cov pab pawg hydroxyethyl, yog li nws muaj peev xwm los tiv thaiv pwm, zoo viscosity stability thiab anti-mildew thaum lub sij hawm ntev cia.

Lub cev thiab tshuaj muaj zog:

Cov tsos mob: MHEC yog dawb lossis yuav luag dawb fibrous lossis granular hmoov; tsw tsw.

Solubility: MHEC tuaj yeem yaj hauv dej txias thiab dej kub, L qauv tsuas yog yaj hauv dej txias, MHEC yog insoluble hauv feem ntau cov kuab tshuaj organic. Tom qab kev kho saum npoo, MHEC disperses hauv dej txias yam tsis muaj agglomeration, thiab yaj maj mam yaj, tab sis nws tuaj yeem yaj sai sai los ntawm kev kho nws tus nqi PH ntawm 8 ~ 10.

PH stability: Lub viscosity hloov me ntsis nyob rau hauv thaj tsam ntawm 2 ~ 12, thiab viscosity txo qis tshaj qhov no.

Granularity: 40 mesh pass tus nqi ≥99% 80 mesh pass tus nqi 100%.

Qhov ceev: 0.30-0.60g / cm3.

Cov Khoom Qib

Daim ntawv thov 

Lub tsev qib MHEC methyl Hydroxyethyl cellulose tuaj yeem siv los ua kev tiv thaiv colloid, emulsifier thiab dispersant vim nws qhov chaw ua haujlwm hauv nws cov tshuaj aqueous. Piv txwv ntawm nws daim ntawv thov yog raws li nram no:

1. Cov nyhuv ntawm methylhydroxyethylcellulose ntawm kev ua haujlwm cement.Building qib MHEC methylHydroxyethylcellulose yog cov hmoov tsis muaj ntxhiab, tsis qab, tsis muaj kuab lom, uas tuaj yeem yaj hauv dej txias los tsim cov kua nplaum pob tshab. Nws muaj cov yam ntxwv ntawm thickening, bonding, dispersion, emulsification, zaj duab xis tsim, ncua kev kawm ntawv, adsorption, gelation, deg kev ua si, noo noo retention thiab tiv thaiv colloid. Txij li cov tshuaj aqueous muaj qhov ua haujlwm saum npoo av, nws tuaj yeem siv los ua kev tiv thaiv colloid, emulsifier thiab dispersant.Building qib MHEC methyl Hydroxyethyl cellulose aqueous kua muaj hydrophilicity zoo thiab yog cov dej tuav tus neeg sawv cev zoo.
2. Npaj cov xim pleev xim nrog kev hloov pauv siab, uas yog ua los ntawm cov khoom hauv qab no los ntawm qhov hnyav ntawm cov ntaub ntawv raw: 150-200g dej deionized; 60-70 g ntawm ntshiab acrylic emulsion; 550-650 g ntawm calcium hnyav; 70-90 g ntawm talc; 30-40 g ntawm methyl cellulose aqueous tov; 10-20 g ntawm lignocellulose aqueous tov; 4-6 g ntawm zaj duab xis-forming pab; 1.5-2.5 g ntawm antiseptic fungicide; 1.8-2.2 g ntawm dispersant; 1.8-2.2 g ntawm wetting agent; Thickener 3.5-4.5g; ethylene glycol 9-11g; Lub tsev qib MHEC aqueous tov yog ua los ntawm 2-4% Tsev qib MHEC yaj hauv dej; tuscellulose fiber ntauaqueous tov yog ua los ntawm 1-3%cellulose fiber ntauyog tsim los ntawm dissolving hauv dej.

Yuav ua li casTsev kawm ntawv qib MHEC?

Covntau lawmCov txheej txheem ntawm Tsev Qib MHEC methyl hydroxyethyl cellulose yog cov paj rwb zoo siv los ua cov khoom siv raw thiab ethylene oxide yog siv los ua tus neeg sawv cev etherifying los npaj tsev qib MHEC. Cov ntaub ntawv raw rau kev npaj tsev qib MHEC yog npaj rau hauv qhov hnyav: 700-800 qhov chaw ntawm toluene thiab isopropanol sib tov ua hnyav, 30-40 qhov dej, 70-80 qhov chaw ntawm sodium hydroxide, 80-85 feem ntawm cov paj rwb refined, nplhaib 20-28 qhov chaw ntawm oxyethane, 80-90 qhov chaw ntawm methyl chloride, 16-19 qhov chaw ntawm glacial acetic acid; cov kauj ruam tshwj xeeb yog raws li nram no:

Nyob rau hauv thawj kauj ruam, ntxiv ib tug sib tov ntawm toluene thiab isopropanol, dej, thiab sodium hydroxide rau hauv cov tshuaj tiv thaiv kettle, nce qhov kub ntawm 60-80 ° C, thiab cia rau 20-40 feeb;

Qhov thib ob kauj ruam, alkalization: txias cov ntaub ntawv saum toj no rau 30-50 ° C, ntxiv cov paj rwb refined, tsuag nrog ib tug sib tov ntawm toluene thiab isopropanol, tshem tawm mus rau 0.006Mpa, sau nrog nitrogen rau 3 hloov, thiab ua alkalis tom qab hloov lub alkalization tej yam kev mob. yog raws li nram no: alkalization lub sij hawm yog 2 teev, thiab alkalization kub yog 30 ℃-50 ℃;

Qhov thib peb kauj ruam, etherification: tom qab alkalization, lub reactor raug tshem tawm mus rau 0.05～0.07MPa, ethylene oxide thiab methyl chloride ntxiv thiab khaws cia rau 30～50 feeb; Thawj theem ntawm etherification: 40～60 ℃, 1.0～2.0 Teev, lub siab tswj ntawm 0.15-0.3 Mpa; theem ob ntawm etherification: 60～90 ℃, 2.0～2.5 teev, lub siab yog tswj ntawm 0.4-0.8 Mpa;

Qhov thib plaub, kev ua kom tsis zoo: ntxiv cov metered glacial acetic acid ua ntej rau lub desolventizer, nias rau hauv cov khoom siv etherified rau nruab nrab, nce qhov kub ntawm 75.～80 ℃ rau desolventization, qhov kub yuav nce mus rau 102 ℃, thiab tus nqi pH yuav yog 68. Thaum lub desolvation tiav; sau lub desolvation kettle nrog kais dej kho los ntawm qhov rov qab osmosis ntaus ntawv ntawm 90 ℃～100 ℃;

Kauj ruam tsib, centrifugal ntxuav: cov ntaub ntawv nyob rau hauv lub thib plaub kauj ruam yog centrifuged los ntawm ib tug kab rov tav ntsia hlau centrifuge, thiab cov ntaub ntawv sib cais yog xa mus rau ib tug ntxhua khaub ncaws uas muaj dej kub ua ntej ntxuav cov ntaub ntawv;

Kauj ruam thib rau, centrifugal ziab: cov ntaub ntawv ntxuav yog thauj mus rau hauv lub tshuab ziab khaub ncaws los ntawm kab rov tav ntsia hlau centrifuge, cov ntaub ntawv qhuav ntawm 150-170 ° C, thiab cov ntaub ntawv qhuav yog crushed thiab ntim.

Piv nrog rau cov khoom siv cellulose ether uas twb muaj lawm, tam sim notxoj kev tsim khoomsiv ethylene oxide ua tus neeg sawv cev etherifying los npaj Tsev Qib MHEC methyl hydroxyethyl cellulose, thiab vim tias nws muaj cov pab pawg hydroxyethyl, nws muaj peev xwm tiv thaiv kab mob zoo. Zoo viscosity stability thiab mildew kuj thaum lub sij hawm ntev cia. Nws tuaj yeem hloov lwm cov cellulose ethers.

Bqib MHECyog cellulose ether derivatives,Cellulose ether yog cov khoom siv tshuaj zoo polymer nrog ntau yam kev siv ua los ntawm ntuj polymer cellulose los ntawm kev kho tshuaj. Txij li thaum cellulose nitrate thiab cellulose acetate tau tsim nyob rau hauv lub xyoo pua 19th, chemists tau tsim ntau series ntawm cellulose derivatives ntawm cellulose ethers. Cov ntawv thov tshiab tau tshawb pom tas li thiab muaj ntau qhov kev lag luam koom nrog. Cellulose ether khoom xws li sodium carboxymethyl cellulose (CMC), ethyl cellulose (EC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), methyl hydroxyethyl cellulose (MHEC) Thiab methyl hydroxypropyl cellulose (MHPC) thiab lwm yam cellulose ethers yog hu ua "industrial monosodium glutamate" thiab qib tsev MHEC tau siv dav hauv cov nplais nplaum, cov tshuaj khib nyiab qhuav, cement thiab gypsum plasters thiab lwm yam.

Ntim:

25kg ntawv hnab sab hauv nrog PE hnab.

20'FCL: 12Ton nrog palletized, 13.5Ton yam tsis muaj palletized.

40'FCL: 24Ton nrog palletized, 28Ton tsis palletized.