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Kuchuluka kwa HPMC komwe kumagwiritsidwa ntchito kumasiyana malinga ndi nyengo, kutentha, mtundu wa ufa wa calcium wa phulusa lakomweko, fomula ya ufa wa putty ndi "ubwino womwe makasitomala amafunikira". Nthawi zambiri, ndi pakati pa 4 kg ndi 5 kg. Mwachitsanzo: ufa wambiri wa putty mu B...Werengani zambiri»
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Kusiyana kwakukulu pakati pa matope osakaniza ndi matope achikhalidwe ndikuti matope osakaniza ndi matope amasinthidwa ndi mankhwala ochepa. Kuwonjezera chowonjezera chimodzi ku matope osakaniza ndi ufa kumatchedwa kusintha kwakukulu, kuwonjezera zowonjezera ziwiri kapena zingapo kumatchedwa kusintha kwachiwiri...Werengani zambiri»
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Gypsum yochotsa sulfurization ndi mpweya wotuluka womwe umapangidwa ndi kuyaka kwa mafuta okhala ndi sulfure (malasha, mafuta), zinyalala zolimba zamafakitale zomwe zimapangidwa panthawi yoyeretsa sulfurization, ndi gypsum ya hemihydrate (mankhwala a CaSO4· 0.5H2O), magwiridwe antchito ake ndi ofanana ndi a na...Werengani zambiri»
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Hydroxypropyl methylcellulose (HPMC) imagwira ntchito makamaka posunga madzi, kukhuthala ndikuwongolera magwiridwe antchito a simenti, gypsum ndi zinthu zina za ufa. Kuchita bwino kwambiri posunga madzi kumatha kuletsa ufawo kuti usaume ndi kusweka chifukwa cha madzi ambiri...Werengani zambiri»
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M'zaka zaposachedwa, ndi chitukuko chopitilira cha ukadaulo woteteza makoma akunja, kupita patsogolo kosalekeza kwa ukadaulo wopanga ma cellulose, komanso makhalidwe abwino a HPMC yokha, HPMC yakhala ikugwiritsidwa ntchito kwambiri mumakampani omanga. Pofuna kufufuza zambiri za makinawa ...Werengani zambiri»
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Dzina lachi China la HPMC ndi hydroxypropyl methylcellulose. Si ionic ndipo nthawi zambiri imagwiritsidwa ntchito ngati chosungira madzi mu matope osakanikirana ndi madzi. Ndi chinthu chosungira madzi chomwe chimagwiritsidwa ntchito kwambiri mu matope. Njira yopangira HPMC makamaka ndi chinthu cha polysaccharide chopangidwa ndi ether chomwe chimapangidwa ndi...Werengani zambiri»
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1. Mavuto omwe amapezeka mu ufa wa putty Kuumitsa mwachangu kumachitika makamaka chifukwa cha kuchuluka kwa ufa wa calcium wowonjezeredwa (wochuluka kwambiri, kuchuluka kwa ufa wa calcium wogwiritsidwa ntchito mu fomula ya putty kumatha kuchepetsedwa moyenera) kumagwirizana ndi kuchuluka kwa madzi omwe ulusi umasunga, komanso kumagwirizana ndi kuuma kwa...Werengani zambiri»
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Mu matope osakaniza okonzeka, bola ngati ether yaying'ono ya cellulose ingawongolere kwambiri magwiridwe antchito a matope onyowa, zitha kuwoneka kuti ether ya cellulose ndi chowonjezera chachikulu chomwe chimakhudza magwiridwe antchito a matope. Kusankha mitundu yosiyanasiyana, kukhuthala kosiyana, mapa...Werengani zambiri»
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Chinthu chofunika kwambiri cha cellulose ether ndi kusunga madzi m'zida zomangira. Popanda kuwonjezera cellulose ether, wosanjikiza woonda wa matope atsopano umauma mwachangu kwambiri kotero kuti simenti singathe kunyowa mwachibadwa ndipo matopewo sangaume ndikupeza mgwirizano wabwino. Pa...Werengani zambiri»
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Mavitamini onse amachokera ku thonje lachilengedwe kapena phala lamatabwa, lomwe limapangidwa kudzera mu etherification. Ma cellulose osiyanasiyana amagwiritsa ntchito zinthu zosiyanasiyana zotenthetsera. Chothandizira kutentha chomwe chimagwiritsidwa ntchito mu hydroxyethyl cellulose (HEC) ndi ethylene oxide, ndipo chothandizira kutentha chomwe chimagwiritsidwa ntchito mu hydroxy...Werengani zambiri»
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Kugwiritsa ntchito hydroxypropyl methylcellulose mu matope omangira pulasitiki. Kusunga madzi ambiri kungapangitse simenti kukhala ndi madzi okwanira, kuwonjezera mphamvu ya mgwirizano, ndipo nthawi yomweyo, kumatha kuwonjezera mphamvu yokoka ndi kumeta, komanso kukonza kwambiri...Werengani zambiri»
- Kodi kuchuluka kwa madzi omwe amasungidwa mu hydroxypropyl methylcellulose kumakhudza bwanji matope?
A. Kufunika kosunga madzi Kusunga madzi kwa matope kumatanthauza kuthekera kwa matope kusunga madzi. Mtondo womwe uli ndi madzi ochepa umatha kutuluka magazi komanso kugawanika panthawi yonyamula ndi kusungira, ndiko kuti, madzi amayandama pamwamba, ndipo mchenga ndi simenti zimamira pansi. Iyenera kukhala ...Werengani zambiri»