Kodi kukhuthala koyenera kwa hydroxypropyl methylcellulose (HPMC) 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 njira zosungunula za hydroxypropyl methylcellulose (HPMC) ndi ziti?
(1) Kuyera: Ngakhale kuti Baidu sangadziwe ngati HPMC ndi yosavuta kugwiritsa ntchito, ndipo ngati zinthu zoyera ziwonjezedwa panthawi yopanga, ubwino wake udzakhudzidwa. Komabe, zinthu zambiri zabwino zimakhala ndi kuyera kwabwino.
(2) Kusalala: Kusalala kwa HPMC nthawi zambiri kumakhala ndi maukonde 80 ndi maukonde 100, ndipo maukonde 120 ndi ochepa. HPMC yambiri yopangidwa ku Hebei ndi maukonde 80. Kusalala kwambiri, makamaka, kumakhala bwino.
(3) Kutumiza kuwala: ikani hydroxypropyl methylcellulose (HPMC) m'madzi kuti ipange colloid yowonekera, ndikuyang'ana momwe kuwala kwake kumayendera. Kutumiza kuwala kukakhala kwakukulu, kumakhala bwino, zomwe zikusonyeza kuti mulibe zinthu zambiri zosasungunuka. . Kulowa kwa ma reactor oyima nthawi zambiri kumakhala bwino, ndipo kwa ma reactor oyima ndi koipa, koma sizikutanthauza kuti mtundu wa ma reactor oyima ndi wabwino kuposa wa ma reactor oyima, ndipo khalidwe la chinthucho limatsimikiziridwa ndi zinthu zambiri. (4) Mphamvu yokoka: Mphamvu yokoka yeniyeni ikakhala yayikulu, kulemera kwake kumakhala bwino. Kudziwika kwake kumakhala kwakukulu, makamaka chifukwa kuchuluka kwa gulu la hydroxypropyl kuli kokwera, ndipo kuchuluka kwa gulu la hydroxypropyl kuli kokwera, kusunga madzi kumakhala bwino.
Kodi ntchito yaikulu ya HPMC mu ufa wa putty ndi iti, ndipo kodi imachitika ndi mankhwala?
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 zingapangitse ufa wa putty kukhala ndi kapangidwe kabwino. 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, sugwira ntchito chifukwa zinthu zatsopano (calcium carbonate) zapangidwanso.
Zigawo zazikulu za ufa wa calcium wa phulusa ndi izi: chisakanizo cha Ca(OH)2, CaO ndi CaCO3 yochepa, CaO+H2O=Ca(OH)2 —Ca(OH)2+CO2=CaCO3↓+H2O calcium wa phulusa m'madzi ndi mumlengalenga Pansi pa mphamvu ya CO2, calcium carbonate imapangidwa, pomwe HPMC imasunga madzi okha, zomwe zimathandiza kuti calcium wa phulusa igwire bwino ntchito, ndipo sichita nawo chilichonse chomwe chimachitika.
Ubale pakati pa kukhuthala ndi kutentha kwa HPMC, ndi chiyani chomwe chiyenera kuganiziridwa pogwiritsira ntchito?
Kukhuthala kwa HPMC kumagwirizana ndi kutentha, ndiko kuti, kukhuthala kumawonjezeka pamene kutentha kukuchepa. Kukhuthala kwa chinthu chomwe nthawi zambiri timatchula chimatanthauza zotsatira za mayeso a yankho lake la madzi la 2% pa kutentha kwa madigiri 20 Celsius.
Pogwira ntchito, ziyenera kudziwika kuti m'madera omwe kutentha kwake kuli kosiyana kwambiri pakati pa chilimwe ndi nyengo yozizira, ndi bwino kugwiritsa ntchito kukhuthala kochepa m'nyengo yozizira, komwe kumakhala kothandiza kwambiri pa ntchito yomanga. Kupanda kutero, kutentha kukakhala kochepa, kukhuthala kwa cellulose kudzawonjezeka, ndipo mphamvu ya dzanja idzakhala yolemera pokanda.
Kukhuthala kwapakati: 75000-100000 makamaka amagwiritsidwa ntchito popanga putty
Chifukwa: kusunga bwino madzi
Kukhuthala kwakukulu: 150000-200000 imagwiritsidwa ntchito makamaka pa matope oteteza tinthu ta polystyrene ndi ufa wa rabara ndi matope oteteza tinthu tating'onoting'ono ta vitrified microbead.
Chifukwa: kukhuthala kwakukulu, matope sagwa mosavuta, akugwa, zomwe zimapangitsa kuti kapangidwe kake kakhale bwino.
Nthawi yotumizira: Meyi-18-2023