Kodi kukhuthala koyenera kwa hydroxypropyl methylcellulose (HPMC) ndi chiyani?
Ufa wa putty nthawi zambiri umakhala 100,000 yuan, ndipo zofunikira pamatope ndizokwera, ndipo 150,000 yuan ndizofunikira kuti zigwiritsidwe ntchito mosavuta. Komanso, ntchito yofunika kwambiri ya HPMC ndi kusunga madzi, kenako thickening. Mu ufa wa putty, malinga ngati kusungirako madzi kuli bwino ndipo kukhuthala kuli kochepa (70,000-80,000), ndizothekanso. Zoonadi, kukwezeka kwa viscosity kumapangitsa kuti madzi azikhala bwino. Pamene mamasukidwe akayendedwe kuposa 100,000, mamasukidwe akayendedwe adzakhudza kasungidwe madzi. Osatinso zambiri.
Kodi njira zosungunulira za hydroxypropyl methylcellulose (HPMC) ndi ziti?
(1) Kuyera: Ngakhale kuti Baidu sangathe kudziwa ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati zowonjezera zoyera zikuwonjezeredwa panthawi yopanga, khalidwe lake lidzakhudzidwa. Komabe, zinthu zambiri zabwino zimakhala ndi zoyera zabwino.
(2) Fineness: Ubwino wa HPMC nthawi zambiri umakhala ndi mauna 80 ndi mauna 100, ndipo mauna 120 ndiwocheperako. HPMC yambiri yopangidwa ku Hebei ndi 80 mesh. Kukongoletsedwa bwino, kunena zambiri, kumakhala bwinoko.
(3) Kutumiza kowala: ikani hydroxypropyl methylcellulose (HPMC) m'madzi kuti mupange colloid yowonekera, ndikuyang'ana kuwala kwake. Kuchuluka kwa kuwala kwamagetsi, kumakhala bwinoko, kusonyeza kuti muli ma insolubles ochepa mmenemo. . The permeability wa ofukula riyakitala zambiri zabwino, ndi yopingasa riyakitala ndi zoipa, koma sizikutanthauza kuti khalidwe ofukula riyakitala kuposa yopingasa riyakitala, ndi mankhwala khalidwe anatsimikiza ndi zinthu zambiri. (4) Mphamvu yokoka yeniyeni: Kuchuluka kwa mphamvu yokoka kwapadera, ndikolemera kwambiri. Kutsimikizika ndi kwakukulu, makamaka chifukwa zomwe zili mugulu la hydroxypropyl momwemo ndizazikulu, ndipo zomwe zili mugulu la hydroxypropyl ndizokwera, kusungirako madzi kuli bwino.
Kodi ntchito yayikulu yogwiritsira ntchito HPMC mu putty powder ndi yotani, ndipo imachitika ndi mankhwala?
Mu putty powder, HPMC imagwira ntchito zitatu zokulitsa, kusunga madzi ndi kumanga.
Kukhuthala: Ma cellulose amatha kukhuthala kuti ayimitse ndikusunga yunifolomu ya yankho mmwamba ndi pansi, ndikupewa kugwa.
Kusungirako madzi: pangani ufa wa putty kuti uume pang'onopang'ono, ndipo thandizani phulusa la calcium kuti lizigwira ntchito pansi pa madzi.
Zomangamanga: Ma cellulose amakhala ndi mafuta, omwe amatha kupanga ufa wa putty kukhala womanga bwino. HPMC satenga nawo gawo pazosintha zilizonse zamakina, koma imagwira ntchito yothandiza. Kuonjezera madzi ku ufa wa putty ndikuwuyika pakhoma ndi mankhwala, chifukwa zinthu zatsopano zimapangidwira. Ngati mutachotsa ufa wa putty pakhoma kuchokera pakhoma, perani kukhala ufa, ndikugwiritsanso ntchito, sizingagwire ntchito chifukwa zinthu zatsopano (calcium carbonate) zapangidwa. ) nawonso.
Zigawo zazikulu za ufa wa phulusa la calcium ndi: kusakaniza kwa Ca(OH)2, CaO ndi CaCO3 pang'ono, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O ash calcium m'madzi ndi mpweya Pansi pa zochita za CO2, calcium carbonate imapangidwa, pamene HPMC imangokhala ndi madzi, zomwe zimathandiza kuti phulusa la calcium liziyenda bwino, ndipo silitenga nawo mbali pazochitika zilizonse.
Ubale pakati pa mamasukidwe akayendedwe ndi kutentha kwa HPMC, ndi chiyani chomwe chiyenera kutsatiridwa pakugwiritsa ntchito?
The mamasukidwe akayendedwe a HPMC ndi inversely proportional kutentha, ndiko kuti, mamasukidwe akayendedwe ukuwonjezeka pamene kutentha amachepetsa. Kukhuthala kwa chinthu chomwe timakonda kunena kumatanthawuza zotsatira za mayeso a 2% yankho lamadzi pa kutentha kwa madigiri 20 Celsius.
Muzochita zothandiza, ziyenera kuzindikiridwa kuti m'madera omwe ali ndi kusiyana kwakukulu kwa kutentha pakati pa chilimwe ndi nyengo yozizira, tikulimbikitsidwa kugwiritsa ntchito kukhuthala kochepa kwambiri m'nyengo yozizira, yomwe imakhala yabwino kwambiri pomanga. Apo ayi, kutentha kukakhala kochepa, kukhuthala kwa cellulose kumawonjezeka, ndipo dzanja limakhala lolemera pamene likukanda.
Kukhuthala kwapakatikati: 75000-100000 makamaka amagwiritsidwa ntchito pa putty
Chifukwa: kusunga bwino madzi
Mkulu mamasukidwe akayendedwe: 150000-200000 zimagwiritsa ntchito polystyrene tinthu kutchinjiriza matope ufa ndi vitrified microbead kutchinjiriza matope.
Chifukwa: mkulu mamasukidwe akayendedwe, matope si zophweka kugwa, sagging, amene bwino yomanga.
Nthawi yotumiza: May-18-2023