Udindo wa hydroxypropyl methylcellulose mu putty

Udindo wa hydroxypropyl methylcellulose mu putty

Kuyambira thickening, kusunga madzi ndi kumanga ntchito zitatu.

Kukhuthala: Ma cellulose amatha kukhuthala kuti ayimitse, sungani yankho kuti likhale lofanana komanso losasinthasintha, komanso kukana kugwa. Kusungirako madzi: Pangani ufa wa putty kuti uume pang'onopang'ono, ndipo thandizani kuyamwa kwa calcium phulusa pansi pamadzi. Kumanga: Ma cellulose ali ndi mphamvu yothira mafuta, zomwe zingapangitse ufa wa putty kukhala ndi ntchito yabwino. Hydroxypropyl methylcellulose satenga nawo gawo pazamankhwala aliwonse ndipo amangothandiza. Putty ufa anawonjezera ndi madzi mtanda pakhoma, amene ndi mankhwala anachita, chifukwa pali mapangidwe latsopano mankhwala calcium carbonate. Zigawo zazikulu za phulusa la calcium powder ndi: kusakaniza kwa calcium hydroxide Ca (OH) 2, calcium oxide CaO ndi pang'ono calcium carbonate CaCO3. Phulusa la calcium carbonate limapanga calcium carbonate pansi pa zochita za CO2 m'madzi ndi mpweya, pamene hydroxypropyl methyl Cellulose imangosunga madzi ndikuthandizira kuyamwa bwino kwa phulusa la calcium, lomwe palokha silichita nawo chilichonse.

Choyamba timasanthula zifukwa za kugwa kwa ufa wa putty kuchokera ku zopangira za putty: phulusa la calcium powder, hydroxypropyl methylcellulose, heavy calcium powder, water ash calcium powder.

1. Popanga kwenikweni, kuti afulumizitse kuwonongeka, kutentha kwa calcination nthawi zambiri kumawonjezeka kufika 1000-1100 °C. Chifukwa cha kukula kwakukulu kwa zipangizo za miyala ya laimu kapena kutentha kosafanana mu ng'anjo pa nthawi yowotchera, laimu nthawi zambiri amakhala ndi laimu wosapsa ndi laimu woyaka. Kashiamu carbonate mu laimu underfire si kuwola kwathunthu, ndipo alibe mphamvu yogwirizana pa ntchito, amene sangathe kupereka mphamvu yogwirizana ndi putty, kuchititsa kuchotsa ufa chifukwa cha kusakwanira kuuma ndi mphamvu putty.

2. Kuchuluka kwa calcium hydroxide mu phulusa la ufa wa calcium, kumapangitsanso kuuma kwa putty komwe kumapangidwa. M'malo mwake, m'munsi zomwe zili mu calcium hydroxide mu phulusa la ufa wa calcium, zimakhala zovuta kwambiri kuuma kwa putty pamalo opangira, zomwe zimayambitsa vuto la kuchotsa ufa ndi kuchotsa ufa.

3. Phulusa la phulusa la calcium limasakanizidwa ndi ufa wambiri wa calcium wochuluka, womwe umapangitsa kuti phulusa la calcium likhale lochepa kwambiri kuti lipereke kuuma kokwanira ndi mphamvu kwa putty, zomwe zimapangitsa kuti putty agwe. Ntchito yayikulu ya ufa wa putty ndikusunga madzi, kupereka madzi okwanira kuumitsa phulusa la ufa wa calcium, ndikuwonetsetsa kuti kuuma kokwanira. Ngati pali vuto ndi khalidwe la hydroxypropyl methylcellulose kapena zomwe zili zogwira mtima ndizochepa, chinyezi chokwanira sichingaperekedwe, zomwe zidzachititsa kuti kuumitsa kukhale kosakwanira ndikupangitsa putty kugwetsa ufa.

Zingapezeke kuchokera pamwambapa kuti khalidwe la hydroxypropyl methylcellulose ndi losauka kwambiri ndipo silingathe kukwaniritsa zotsatira zake, ndipo ufa wa putty udzagwa. Chifukwa chachikulu ndi imvi wopempha heavy calcium.