xov xwm

Hydroxypropyl methyl cellulose yog dab tsi?

Hydroxypropyl methyl cellulose (HPMC), tseem hu ua hydroxypropyl methylcellulose, cellulose hydroxypropyl methyl ether, cellulose, 2-hydroxypropylmethyl ether, PROPYLENE GLYCOL ETHER OF METHYLCELLULOSE, CAS No. 9004-65-3, yog ua los ntawm cov paj rwb ntshiab heev los ntawm kev sib xyaw tshwj xeeb hauv qab alkaline. HPMC tuaj yeem faib ua qib tsev, qib zaub mov thiab qib tshuaj raws li nws siv. Nws yog siv dav hauv kev tsim kho, zaub mov, tshuaj thiab tshuaj pleev ib ce, tshuaj txhua hnub thiab lwm yam lag luam.

Cov kev siv HPMC yog dab tsi?

Kev lag luam tsim kho

1. Cov av nplaum masonry
Kev ua kom cov nplaum rau ntawm qhov chaw masonry muaj zog tuaj yeem ua rau cov dej tuav tau zoo dua, yog li ua kom cov mortar muaj zog dua, thiab ua kom cov roj nplua nyeem thiab cov yas zoo dua los pab ua kom kev tsim kho zoo dua. Kev tsim kho yooj yim txuag lub sijhawm thiab txhim kho kev siv nyiaj.
2. Cov khoom siv gypsum
Nws tuaj yeem ua kom lub sijhawm ua haujlwm ntawm cov mortar ntev dua thiab tsim kom muaj zog dua thaum lub sijhawm khov. Cov txheej txheem zoo ntawm qhov chaw yog tsim los ntawm kev tswj qhov sib xws ntawm cov mortar.
3. Cov xim pleev thiab cov tshuaj tshem xim uas ntws hauv dej
Nws tuaj yeem ua kom lub txee ntev dua los ntawm kev tiv thaiv cov khoom khov, thiab muaj kev sib raug zoo heev thiab kev ruaj khov ntawm lub cev. Nws cov nqi yaj sai thiab tsis yooj yim rau agglomerate, uas pab tau kom yooj yim rau cov txheej txheem sib tov. Tsim cov yam ntxwv ntws zoo, suav nrog cov spatter tsawg thiab leveling zoo, xyuas kom meej qhov chaw tiav zoo, thiab tiv thaiv cov xim sagging. Txhim kho qhov viscosity ntawm cov xim tshem tawm raws li dej thiab cov organic solvent xim tshem tawm, yog li cov xim tshem tawm yuav tsis ntws tawm ntawm qhov chaw ua haujlwm.
4. Cov nplaum rau pobzeb ceramic
Cov khoom xyaw qhuav yooj yim sib tov thiab tsis sib sau ua ke, txuag lub sijhawm ua haujlwm vim tias lawv siv tau sai dua thiab zoo dua, txhim kho kev ua haujlwm thiab txo cov nqi. Txhim kho kev ua haujlwm ntawm cov vuas vov thiab muab kev nplaum zoo heev los ntawm kev ncua sijhawm txias.
5. Cov ntaub ntawv hauv pem teb uas nws tus kheej leveling
Nws muab viscosity thiab siv tau ua cov tshuaj tiv thaiv kev poob qis los pab txhim kho kev ua haujlwm ntawm pem teb. Kev tswj hwm kev khaws dej tuaj yeem txo qhov tawg thiab ntsws.
6. Kev tsim cov pob zeb ua vaj tse uas tau tsim
Nws txhim kho qhov ua tau ntawm cov khoom extruded, muaj lub zog sib txuas siab thiab lubricity, thiab txhim kho lub zog ntub thiab lo rau ntawm cov ntawv extruded.
7. Cov khoom sib koom ua ke ntawm phaj
Hydroxypropyl methyl cellulose muaj cov dej zoo heev, tuaj yeem ncua lub sijhawm txias, thiab nws cov roj nplua nyeem ua rau kev siv du dua. Nws ua rau qhov zoo ntawm qhov chaw zoo dua, muab cov qauv du thiab sib npaug, thiab ua rau qhov chaw sib txuas ruaj khov dua.
8. Cov cement raws li gypsum
Nws muaj cov dej khaws cia tau zoo, ua kom lub sijhawm ua haujlwm ntawm cov mortar ntev dua, thiab tseem tuaj yeem tswj tau qhov nkag mus ntawm huab cua, yog li tshem tawm cov kab nrib pleb me me ntawm cov txheej thiab tsim ib qho chaw du.

Kev lag luam zaub mov

1. Cov txiv qaub hauv cov kaus poom: kom tiv thaiv kev dawb thiab kev puas tsuaj vim yog qhov lwj ntawm cov txiv qaub glycosides thaum lub sijhawm khaws cia, yog li ua tiav cov txiaj ntsig khaws cia tshiab.
2. Cov khoom txiv hmab txiv ntoo txias: ntxiv rau hauv kua txiv hmab txiv ntoo thiab dej khov kom ua rau saj zoo dua.
3. Cov kua ntses: siv ua emulsion stabilizer lossis thickener ntawm cov kua ntses thiab txiv lws suav muab tshuaj.
4. Kev txheej thiab txhuam dej txias: siv rau kev khaws cia ntses khov kom tiv thaiv kev hloov xim thiab kev puas tsuaj zoo. Tom qab txheej thiab txhuam nrog methyl cellulose lossis hydroxypropyl methyl cellulose aqueous solution, khov rau ntawm txheej dej khov.
5. Cov nplaum rau cov ntsiav tshuaj: Raws li cov nplaum molding rau cov ntsiav tshuaj thiab cov granules, nws muaj "kev sib tsoo tib lub sijhawm" zoo (kev yaj sai, kev sib tsoo thiab kev sib kis thaum noj).

Kev lag luam tshuaj

1. Kev Siv Encapsulation: Tus neeg sawv cev encapsulation yog ua rau hauv cov tshuaj organic solvent lossis cov kua dej rau kev tswj hwm ntsiav tshuaj, tshwj xeeb tshaj yog rau kev txau encapsulation ntawm cov khoom npaj.
2. Tus neeg sawv cev tiv thaiv kev laus: 2-3 grams ib hnub, 1-2G ib zaug, rau 4-5 hnub.
3. Tshuaj kho qhov muag: Vim tias lub zog osmotic ntawm methyl cellulose aqueous solution zoo ib yam li cov kua muag, nws tsis ua rau khaus qhov muag. Nws raug ntxiv rau hauv tshuaj kho qhov muag ua cov roj nplua nyeem rau kev sib cuag nrog lub lens ntawm lub qhov muag.
4. Jelly: Nws yog siv ua cov khoom siv hauv paus ntawm jelly zoo li tshuaj sab nraud lossis tshuaj pleev.
5. Tus neeg sawv cev impregnating: siv ua thickener thiab dej tuav tus neeg sawv cev.

Kev lag luam pleev kom zoo nkauj

1. Tshuaj zawv plaub hau: Txhim kho qhov viscosity thiab npuas ruaj khov ntawm tshuaj zawv plaub hau, tshuaj ntxuav thiab tshuaj ntxuav tes.
2. Tshuaj txhuam hniav: txhim kho qhov fluidity ntawm cov tshuaj txhuam hniav.

Kev lag luam hauv qhov cub

1. Cov ntaub ntawv hluav taws xob: ua cov nplaum ua cov nplaum ntawm cov khoom siv hluav taws xob ceramic thiab ferrite bauxite magnet, nws tuaj yeem siv ua ke nrog 1.2-propanediol.
2. Tshuaj pleev xim: siv ua tshuaj pleev xim rau cov khoom siv ceramics thiab ua ke nrog cov xim pleev xim, uas tuaj yeem txhim kho kev sib txuas thiab kev ua haujlwm.
3. Cov tshuaj khib nyiab refractory: Nws tuaj yeem ntxiv rau cov tshuaj khib nyiab refractory lossis cov khoom siv rauv taws kom txhim kho kev yas thiab kev khaws dej.

Lwm yam lag luam

HPMC kuj tseem siv dav hauv cov khoom siv hluavtaws, petrochemical, ceramics, ua ntawv, tawv, kua mem dej, haus luam yeeb thiab lwm yam lag luam. Nws yog siv los ua cov khoom tuab, cov khoom tawg, cov khoom sib txuas, cov khoom emulsifier thiab cov khoom ruaj khov hauv kev lag luam textile.

Yuav ua li cas los txiav txim siab qhov zoo ntawm hydroxypropyl methyl cellulose (HPMC)?

1. Chromaticity: txawm hais tias nws tsis tuaj yeem txheeb xyuas ncaj qha seb HPMC puas yooj yim siv, thiab yog tias tus neeg sawv cev dawb ntxiv rau hauv kev tsim khoom, nws qhov zoo yuav raug cuam tshuam. Txawm li cas los xij, cov khoom zoo yuav raug yuav.
2. Kev Zoo: HPMC muaj 80 meshes thiab 100 meshes feem ntau, thiab 120 meshes tsawg dua. Feem ntau HPMCs muaj 80 meshes. Feem ntau hais lus, kev zoo sab nraud zoo dua.
3. Kev xa hluav taws xob: muab hydroxypropyl methyl cellulose (HPMC) rau hauv dej kom tsim tau ib lub pob tshab colloid, thiab tom qab ntawd pom nws lub teeb transmittance. Lub teeb transmittance ntau dua, qhov zoo dua, qhia tias muaj tsawg dua insoluble teeb meem hauv nws.
4. Qhov hnyav tshwj xeeb: Qhov hnyav dua qhov hnyav tshwj xeeb, qhov zoo dua. Qhov piv yog qhov tseem ceeb, feem ntau vim tias cov ntsiab lus ntawm hydroxypropyl siab. Yog tias cov ntsiab lus ntawm hydroxypropyl siab, qhov khaws dej zoo dua.
Hydroxypropyl methyl cellulose ruaj khov rau cov kua qaub thiab cov hauv paus, thiab nws cov kua dej ruaj khov heev hauv pH = 2 ~ 12. Peb yog cov chaw tsim khoom tshaj lij. Yog tias koj xav tau cov khoom no, koj tuaj yeem tiv tauj peb. Qhov ntawd yog txhua yam rau kev sib qhia ntawm HPMC hauv qhov teeb meem no. Kuv vam tias nws tuaj yeem pab koj nkag siab HPMC.