Qib tsev MHEC

Qib tsev MHEC

Qib tsev MHEC Methyl HydroxyethylCelluloseyog ib qho hmoov dawb uas tsis muaj ntxhiab, tsis muaj saj, tsis muaj tshuaj lom uas tuaj yeem yaj rau hauv dej txias kom ua tau ib qho kua nplaum pob tshab. Nws muaj cov yam ntxwv ntawm kev ua kom tuab, kev sib txuas, kev sib kis, emulsification, kev tsim zaj duab xis, kev ncua, kev nqus, gelation, kev ua haujlwm ntawm qhov chaw, kev khaws cia noo noo thiab kev tiv thaiv colloid. Vim tias cov kua dej muaj qhov ua haujlwm ntawm qhov chaw, nws tuaj yeem siv ua tus neeg sawv cev tiv thaiv colloidal, emulsifier thiab dispersant. Qib tsev MHEC methyl Hydroxyethylcellulose aqueous kua muaj hydrophilicity zoo thiab yog tus neeg sawv cev khaws cia dej zoo. Hydroxyethyl methyl cellulose muaj hydroxyethyl pawg, yog li nws muaj peev xwm tiv thaiv pwm zoo, viscosity zoo stability thiab tiv thaiv pwm thaum lub sijhawm khaws cia ntev.

Cov khoom siv lub cev thiab tshuaj lom neeg:

Tsos: MHEC yog dawb los yog yuav luag dawb fibrous lossis granular hmoov; tsis muaj ntxhiab.

Kev yaj: MHEC tuaj yeem yaj rau hauv dej txias thiab dej kub, L qauv tsuas yog yaj rau hauv dej txias xwb, MHEC tsis yaj rau hauv feem ntau cov kuab tshuaj organic. Tom qab kev kho saum npoo, MHEC tawg rau hauv dej txias yam tsis muaj kev sib sau ua ke, thiab yaj qeeb qeeb, tab sis nws tuaj yeem yaj sai sai los ntawm kev kho nws tus nqi PH ntawm 8 ~ 10.

PH ruaj khov: Qhov viscosity hloov me ntsis hauv qhov ntau ntawm 2 ~ 12, thiab viscosity txo qis dhau qhov ntau ntawm no.

Qhov loj me: 40 mesh dhau tus nqi ≥99% 80 mesh dhau tus nqi 100%.

Qhov ceev pom tseeb: 0.30-0.60g / cm3.

Cov Khoom Qib

Daim Ntawv Thov 

MHEC methyl Hydroxyethyl cellulose qib siv tau ua cov tshuaj colloid tiv thaiv, emulsifier thiab dispersant vim nws muaj zog ua haujlwm hauv nws cov kua dej. Piv txwv ntawm nws cov ntawv thov yog raws li nram no:

1. Cov nyhuv ntawm methylhydroxyethylcellulose rau kev ua haujlwm ntawm cov cement. Qib tsev MHEC methylHydroxyethylcellulose yog ib hom hmoov dawb uas tsis muaj ntxhiab, tsis muaj saj, thiab tsis muaj tshuaj lom uas tuaj yeem yaj rau hauv dej txias kom ua tau ib qho kua nplaum pob tshab. Nws muaj cov yam ntxwv ntawm kev ua kom tuab, kev sib txuas, kev sib kis, kev sib xyaw, kev tsim zaj duab xis, kev ncua, kev nqus, kev sib xyaw, kev ua kom gelation, kev ua haujlwm ntawm qhov chaw, kev khaws cia noo noo thiab kev tiv thaiv colloid. Vim tias cov kua dej muaj cov haujlwm ua haujlwm ntawm qhov chaw, nws tuaj yeem siv ua cov colloid tiv thaiv, emulsifier thiab dispersant. Qib tsev MHEC methyl Hydroxyethyl cellulose kua dej muaj hydrophilicity zoo thiab yog ib qho tshuaj zoo rau kev khaws cia dej.
2. Npaj ib daim xim pleev xim uas muaj kev ywj pheej siab, uas yog ua los ntawm cov khoom hauv qab no los ntawm qhov hnyav ntawm cov khoom siv raw: 150-200g ntawm dej deionized; 60-70g ntawm cov acrylic emulsion ntshiab; 550-650g ntawm cov calcium hnyav; 70-90g ntawm talc; 30-40g ntawm cov kua dej methyl cellulose; 10-20g ntawm cov kua dej lignocellulose; 4-6g ntawm cov khoom pab tsim zaj duab xis; 1.5-2.5g ntawm cov tshuaj tua kab mob fungal; 1.8-2.2g ntawm cov tshuaj dispersant; 1.8-2.2g ntawm cov neeg sawv cev ntub dej; Thickener 3.5-4.5g; ethylene glycol 9-11g; cov kua dej MHEC qib tsev yog ua los ntawm 2-4% qib tsev MHEC yaj hauv dej; tuscov cellulose fiberCov kua dej yog ua los ntawm 1 -3%cov cellulose fiberyog ua los ntawm kev yaj hauv dej.

Yuav ua li cas tsim khoomQib tsev MHEC？

Lubkev tsim khoomTxoj kev siv methyl hydroxyethyl cellulose los ua MHEC yog siv paj rwb ua raw khoom thiab ethylene oxide ua etherifying agent los ua MHEC. Cov khoom siv raw rau kev ua MHEC yog npaj ua ntu zus raws li qhov hnyav: 700-800 feem ntawm toluene thiab isopropanol sib tov ua cov kuab tshuaj, 30-40 feem dej, 70-80 feem ntawm sodium hydroxide, 80-85 feem ntawm paj rwb ua kom zoo, nplhaib 20-28 feem ntawm oxyethane, 80-90 feem ntawm methyl chloride, 16-19 feem ntawm glacial acetic acid; cov kauj ruam tshwj xeeb yog raws li nram no:

Hauv thawj kauj ruam, ntxiv cov toluene thiab isopropanol, dej, thiab sodium hydroxide rau hauv lub lauj kaub tshuaj tiv thaiv, tsa qhov kub kom txog 60-80 ° C, thiab khaws cia rau 20-40 feeb;

Kauj ruam thib ob, alkalization: txias cov ntaub ntawv saum toj no rau 30-50 ° C, ntxiv paj rwb zoo, tsuag nrog cov tshuaj toluene thiab isopropanol sib xyaw, tshem tawm mus rau 0.006Mpa, sau nrog nitrogen rau 3 qhov hloov pauv, thiab ua alkalis tom qab hloov pauv Cov xwm txheej alkalization yog raws li nram no: alkalization lub sijhawm yog 2 teev, thiab alkalization kub yog 30 ℃-50℃;

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

Kauj ruam plaub, kev ua kom tsis muaj zog: ntxiv cov kua qaub glacial acetic acid ua ntej rau lub desolventizer, nias rau hauv cov khoom siv etherified rau kev ua kom tsis muaj zog, nce qhov kub kom txog 75～80 ℃ rau kev desolventization, qhov kub yuav nce mus txog 102 ℃, thiab tus nqi pH yuav yog 68. Thaum lub desolvation tiav lawm; sau lub lauj kaub desolvation nrog dej kais kho los ntawm lub cuab yeej osmosis rov qab ntawm 90 ℃.～100℃;

Kauj ruam thib tsib, kev ntxuav centrifugal: cov khoom siv hauv kauj ruam thib plaub yog centrifuged los ntawm lub centrifuge ntsia hlau kab rov tav, thiab cov khoom sib cais raug xa mus rau lub lauj kaub ntxuav uas muaj dej kub ua ntej rau kev ntxuav cov khoom siv;

Kauj ruam thib rau, kev ziab centrifugal: cov khoom ntxuav tau thauj mus rau hauv lub tshuab ziab khaub ncaws los ntawm lub tshuab centrifuge kab rov tav, cov khoom siv tau ziab ntawm 150-170 ° C, thiab cov khoom qhuav tau tsoo thiab ntim.

Piv nrog rau cov thev naus laus zis tsim cov cellulose ether uas twb muaj lawm, tam sim notxoj kev tsim khoomsiv ethylene oxide ua tus neeg sawv cev etherifying los npaj cov khoom siv hauv tsev MHEC methyl hydroxyethyl cellulose, thiab vim nws muaj cov pab pawg hydroxyethyl, nws muaj peev xwm tiv thaiv kab mob zoo. Kev ruaj khov viscosity zoo thiab tiv taus pwm thaum lub sijhawm khaws cia ntev. Nws tuaj yeem hloov lwm cov cellulose ethers.

Bqib ulding MHECyog cellulose ether derivatives,Cellulose ether yog ib yam khoom siv polymer zoo uas muaj ntau yam kev siv ua los ntawm cov polymer cellulose ntuj los ntawm kev kho tshuaj. Txij li thaum cellulose nitrate thiab cellulose acetate tau ua nyob rau hauv lub xyoo pua 19th, cov kws tshuaj tau tsim ntau yam cellulose derivatives ntawm cellulose ethers. Cov teb tshiab tau raug tshawb pom tas li thiab ntau lub lag luam koom nrog. Cellulose ether cov 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 hu ua "industrial monosodium glutamate" thiab qib tsev MHEC tau siv dav hauv cov nplais nplaum, cov tshuaj qhuav, cement thiab gypsum plasters thiab lwm yam.

Ntim:

25kg hnab ntawv sab hauv nrog PE hnab.

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

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