Kev txheeb xyuas yooj yim ntawm hydroxypropyl methylcellulose

Cellulose yog dav siv nyob rau hauv petrochemical, tshuaj, papermaking, tshuaj pleev ib ce, tsev cov ntaub ntawv, thiab lwm yam. Nws yog ib tug ntau yam additive, thiab sib txawv siv muaj ntau yam kev ua tau zoo yuav tsum tau rau cellulose khoom.

Kab lus no feem ntau yog qhia txog kev siv thiab kev txheeb xyuas qhov zoo ntawm HPMC (hydroxypropyl methylcellulose ether), cellulose ntau yam uas feem ntau siv hauv cov hmoov putty zoo tib yam.

HPMC siv cov paj rwb refined ua cov khoom siv tseem ceeb. Nws muaj kev ua tau zoo, tus nqi siab thiab zoo alkali tsis kam. Nws yog tsim rau cov dej-resistant putty thiab polymer mortar ua los ntawm cov cement, txiv qaub calcium thiab lwm yam ntaub ntawv muaj zog alkaline. viscosity ntau yog 40,000-200000S.

Hauv qab no yog ob peb txoj hauv kev los ntsuas qhov zoo ntawm hydroxypropyl methylcellulose sau los ntawm Xiaobian rau koj. Los thiab kawm nrog Xiaobian ~

1. Dawb:

Tau kawg, qhov kev txiav txim siab txiav txim siab qhov zoo ntawm hydroxypropyl methylcellulose tsis tuaj yeem yog whiteness xwb. Qee cov tuam txhab lag luam yuav ntxiv cov tshuaj pleev xim rau hauv cov txheej txheem tsim khoom, qhov no, qhov zoo tsis tuaj yeem txiav txim siab, tab sis qhov whiteness ntawm high-zoo hydroxypropyl methylcellulose yog qhov zoo tiag tiag.

2. Kev zoo:

Hydroxypropyl methylcellulose feem ntau muaj qhov zoo ntawm 80 mesh, 100 mesh thiab 120 mesh. Lub fineness ntawm cov khoom yog zoo heev, thiab solubility thiab dej tuav kuj zoo. Qhov no yog high-zoo hydroxypropyl methylcellulose.

3. Lub teeb transmittance:

Muab hydroxypropyl methylcellulose tso rau hauv dej thiab yaj hauv dej rau ib lub sijhawm los xyuas cov viscosity thiab pob tshab. Tom qab lub gel yog tsim, xyuas nws lub teeb transmittance, qhov zoo dua lub teeb transmittance, qhov siab dua qhov insoluble teeb meem thiab purity.

4. Specification gravity:

Qhov loj dua qhov tshwj xeeb lub ntiajteb txawj nqus, qhov zoo dua, vim tias qhov hnyav dua qhov tshwj xeeb lub ntiajteb txawj nqus, qhov siab dua cov ntsiab lus ntawm hydroxypropyl methyl hauv nws, qhov dej tuav tau zoo dua.