Chidziwitso chogwiritsa ntchito hydroxypropyl methylcellulose mu ufa wa putty

Kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito kumasiyana malinga ndi nyengo, kutentha, mtundu wa ufa wa calcium wa phulusa, mtundu wa ufa wa putty ndi "ubwino womwe makasitomala amafunikira". Kawirikawiri, ndi pakati pa 4 kg ndi 5 kg. Mwachitsanzo: ufa wambiri wa putty ku Beijing ndi 5 kg; ufa wambiri wa putty ku Guizhou ndi 5 kg m'chilimwe ndi 4.5 kg m'nyengo yozizira; kuchuluka kwa putty ku Yunnan ndi kochepa, nthawi zambiri kuyambira 3 kg mpaka 4 kg, ndi zina zotero.

Kodi kukhuthala koyenera kwa hydroxypropyl methylcellulose (HPMC) pakupanga ufa wa putty ndi kotani?

Ufa wa putty nthawi zambiri umakhala wa yuan 100,000, ndipo zofunikira pa matope ndi zapamwamba, ndipo ma yuan 150,000 amafunika kuti agwiritsidwe ntchito mosavuta. Komanso, ntchito yofunika kwambiri ya HPMC ndikusunga madzi, kutsatiridwa ndi kukhuthala. Mu ufa wa putty, bola ngati kusunga madzi kuli bwino ndipo kukhuthala kuli kochepa (70,000-80,000), n'zothekanso. Zachidziwikire, kukhuthala kwakukulu, kukhuthala kwa madzi kumakhala bwino. Kukhuthala kukapitirira 100,000, kukhuthala kudzakhudza kusunga madzi. Palibe zambiri pano.

Kodi ntchito yaikulu ya HPMC mu ufa wa putty ndi iti?

Mu ufa wa putty, HPMC imagwira ntchito zitatu monga kukhuthala, kusunga madzi ndi kumanga.

Kukhuthala: Cellulose ikhoza kupindika kuti iimirire ndikusunga yankholo molingana mmwamba ndi pansi, komanso kuti isagwedezeke.

Kusunga madzi: pangitsani ufa wa putty kuumitsa pang'onopang'ono, ndipo thandizani phulusa la calcium kuchitapo kanthu pansi pa mphamvu ya madzi.

Kapangidwe: Cellulose imakhala ndi mafuta odzola, zomwe zimapangitsa kuti ufa wa putty ukhale wabwino.

HPMC sichita nawo machitidwe aliwonse a mankhwala, koma imangokhala ndi gawo lothandizira. Kuwonjezera madzi ku ufa wa putty ndikuyika pakhoma ndi njira ya mankhwala, chifukwa zinthu zatsopano zimapangidwa. Ngati mutachotsa ufa wa putty pakhoma kuchokera pakhoma, kuupera kukhala ufa, ndikuugwiritsanso ntchito, sizigwira ntchito chifukwa zinthu zatsopano (calcium carbonate) zapangidwanso. ) Zigawo zazikulu za ufa wa calcium wa phulusa ndi: chisakanizo cha Ca(OH)2, CaO ndi CaCO3 yochepa, CaO H2O=Ca(OH)2—Ca(OH)2 CO2=CaCO3↓ H2O Udindo wa calcium wa phulusa mu CO2 m'madzi ndi mpweya Pansi pa vutoli, calcium carbonate imapangidwa, pomwe HPMC imasunga madzi okha, kuthandiza kuti calcium ya phulusa igwire bwino ntchito, ndipo sichita nawo machitidwe aliwonse.