Udindo wa hydroxypropyl methylcellulose mu putty

Udindo wa hydroxypropyl methylcellulose mu putty

Kuchokera pakukhuthala, kusunga madzi ndi kumanga ntchito zitatu.

Kukhuthala: Cellulose imatha kukhuthala kuti iimirire, kusunga yankholo kukhala lofanana komanso losasinthasintha, komanso kupewa kugwedezeka. Kusunga madzi: Pangani ufa wa putty kuti uume pang'onopang'ono, ndikuthandizira momwe calcium ya phulusa imagwirira ntchito pansi pa madzi. Kapangidwe kake: Cellulose imakhala ndi mphamvu yopaka mafuta, zomwe zingapangitse ufa wa putty kugwira ntchito bwino. Hydroxypropyl methylcellulose sigwira ntchito mu mankhwala aliwonse ndipo imagwira ntchito yothandizira yokha. Ufa wa putty umawonjezedwa ndi madzi kuti ugwirizane ndi khoma, lomwe ndi mankhwala, chifukwa pamakhala kupangika kwa chinthu chatsopano cha calcium carbonate. Zigawo zazikulu za ufa wa calcium wa phulusa ndi izi: chisakanizo cha calcium hydroxide Ca(OH)2, calcium oxide CaO ndi calcium carbonate CaCO3 yochepa. Phulusa la calcium limapanga calcium carbonate pansi pa mphamvu ya CO2 m'madzi ndi mpweya, pomwe hydroxypropyl methyl Cellulose imangosunga madzi ndikuthandizira momwe calcium ya phulusa imagwirira ntchito bwino, yomwe yokha sichita nawo machitidwe aliwonse.

Choyamba, timasanthula zifukwa zomwe ufa wa putty umagwera kuchokera ku zinthu zopangira putty: ufa wa calcium wa ash, hydroxypropyl methylcellulose, ufa wa calcium wolemera, ufa wa calcium wa ash water

1. Pakupanga kwenikweni, kuti kuonda kuchepe msanga, kutentha kwa calcination nthawi zambiri kumawonjezeka kufika pa 1000-1100 °C. Chifukwa cha kukula kwakukulu kwa zinthu zopangira miyala yamchere kapena kufalikira kosagwirizana kwa kutentha mu uvuni panthawi ya calcination, laimu nthawi zambiri imakhala ndi laimu wosayaka moto ndi laimu woyaka moto kwambiri. Calcium carbonate yomwe ili mu laimu wosayaka moto siiwonongeka kwathunthu, ndipo imakhalabe ndi mphamvu yogwirizana panthawi yogwiritsa ntchito, zomwe sizingapereke mphamvu yokwanira yogwirizana ku putty, zomwe zimapangitsa kuti ufa uchotsedwe chifukwa cha kuuma kosakwanira komanso mphamvu ya putty.

2. Kachulukidwe ka calcium hydroxide mu ufa wa calcium wa phulusa, kuuma kwa putty kumakula. M'malo mwake, kutsika kwa calcium hydroxide mu ufa wa calcium wa phulusa, kuuma kwa putty pamalo opangira zinthu kumakula kwambiri, zomwe zimapangitsa kuti pakhale vuto lochotsa ufa ndi kuchotsa ufa.

3. Ufa wa calcium wa phulusa umasakanizidwa ndi ufa wambiri wa calcium wolemera, zomwe zimapangitsa kuti ufa wa calcium wa phulusa ukhale wochepa kwambiri kuti ukhale wolimba komanso wamphamvu mokwanira ku putty, zomwe zimapangitsa kuti putty igwe. Ntchito yayikulu ya ufa wa putty ndikusunga madzi, kupereka madzi okwanira kuti ufa wa calcium wa phulusa ukhale wolimba, ndikuwonetsetsa kuti uli wolimba mokwanira. Ngati pali vuto ndi mtundu wa hydroxypropyl methylcellulose kapena kuchuluka kwake kuli kochepa, chinyezi chokwanira sichingaperekedwe, zomwe zimapangitsa kuti kuuma kusakhale kokwanira ndikupangitsa kuti putty igwe.

Kuchokera pa zomwe zili pamwambapa, zitha kupezeka kuti mtundu wa hydroxypropyl methylcellulose ndi woipa kwambiri ndipo sungathe kuchitapo kanthu, ndipo ufa wa putty umagwa. Chifukwa chachikulu ndi calcium yolemera ya imvi.