HPMC (CAS:9004-65-3), monga chowonjezera chomwe chimagwiritsidwa ntchito kwambiri pazinthu zomangira, chimagwiritsidwa ntchito makamaka posungira madzi, kukhuthala ndi kupititsa patsogolo ntchito ya mankhwala omalizidwa.Kusungirako madzi ndi chimodzi mwa zizindikiro zazikuluzikulu mukasankha HPMC yapamwamba kwambiri, kotero tiyeni tiwone bwinobwino kuchuluka kwa kusungidwa kwa madzi.
1.Mlingo wa HPMC, ndi ntchito yake yosunga madzi imagwirizana mwachindunji ndi kuchuluka kwake. Kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito pomanga pamsika kumasiyanasiyana kutengera mtundu wake. Nthawi zambiri amawonjezedwa monga kulumikiza, pulasitala, matope odana ndi kung'amba, ndi zina zotero. Zowonjezera zambiri ndi 2 ~ 2.5 KG / MT, kuchuluka kwa putty etc. kuli pakati pa 2 ~ 4.5 KG / MT, guluu wa matailosi ndi pakati pa 3.5 ~ 4 KG / MT, ndipo kuchuluka kwa matailosi ndi 0.3 ~ 1 KG / MT njira zomanga, garry ndi njira zomanga matope odzipangira okha ali pakati pa 0.2~0.6 KG/MT, ndipo ETICS ili pakati pa 4~7 KG/MT. Mkati mwamtunduwu, HPMC ikawonjezeredwa, kusunga madzi kumakhala bwinoko.
2.Zotsatira za chilengedwe chomanga. Chinyezi cha mpweya, kutentha, kuthamanga kwa mphepo, kuthamanga kwa mphepo ndi zinthu zina zidzakhudza kusungunuka kwa madzi mumatope a simenti ndi zinthu zopangidwa ndi gypsum. Mu nyengo zosiyanasiyana ndi madera osiyanasiyana, mlingo wosungira madzi wa mankhwala omwewo udzasiyana, koma kawirikawiri, Kutentha kumakhudza kwambiri kuchuluka kwa madzi osungiramo madzi, kotero pali malingaliro pamsika: HPMC yokhala ndi kutentha kwa gel osakaniza ndi mankhwala apamwamba kwambiri omwe ali ndi madzi osungira madzi.
3.Kupanga ndi kukhuthala kwa cellulose ether -HPMC. Magulu a methoxy ndi hydroxypropoxy amagawidwa mofanana pamtundu wa cellulose molekyulu, zomwe zingapangitse kuyanjana kwa maatomu a okosijeni pa hydroxyl ndi ether bond ndi madzi. Kuthekera kwa kugwirizana kwa haidrojeni kumapangitsa madzi aulere kukhala madzi omangika, potero amawongolera bwino kutuluka kwa madzi ndikusunga madzi ochulukirapo.
Pamene mamasukidwe akayendedwe a HPMC akuwonjezeka, kuchuluka kwa madzi osungirako kumawonjezekanso, kukhuthala kumafika pamlingo wina, kuchuluka kwa madzi kumawonjezeka. Zimakonda kukhala zathyathyathya. Chidule chachidule. Ntchito yosungira madzi ya HPMC imakhudzidwa ndi mbali zonse. Kusankha sikungakhazikitsidwe pa chizindikiro chimodzi.
Nthawi yotumiza: May-16-2022