Hydroxypropylmethylcellulose (HPMC) ndi gulu losunthika lomwe limagwiritsidwa ntchito popanga zomangamanga, kuphatikiza zopangira konkriti. Ngakhale sizingawongolere kulimba kwa konkriti, zimagwira ntchito yofunika kwambiri pakuwongolera zinthu zosiyanasiyana za konkriti.
1. Chiyambi cha hydroxypropyl methylcellulose:
Hydroxypropyl methylcellulose (HPMC) ndi ether yosinthidwa ya cellulose yochokera ku ma polima achilengedwe. Chifukwa cha mawonekedwe ake apadera, amagwiritsidwa ntchito kwambiri ngati chowonjezera pazomangira. Mu konkire, HPMC imagwiritsidwa ntchito ngati chosungira madzi, thickener, ndi binder. Kapangidwe kake ka mankhwala kumapangitsa kuti apange filimu yotetezera kuzungulira tinthu ta simenti, zomwe zimakhudza ma rheological ndi makina osakaniza a konkire.
2. Udindo wa HPMC pakukhazikika kwa konkriti:
Kusungidwa kwa madzi ndi ntchito:
HPMC imagwira ntchito ngati chosungira madzi, kuteteza kutaya madzi ochulukirapo koyambirira kwa kuchiritsa konkire.
Kusungidwa bwino kwa madzi kumeneku kumathandizira kuti konkriti ikhale yogwira ntchito bwino, zomwe zimapangitsa kuti konkriti ikhazikike bwino.
Wonjezerani adhesion:
Mafilimu opanga mafilimu a HPMC amathandizira kumamatira pakati pa tinthu tating'ono ta simenti, zomwe zimapangitsa kuti pakhale matrix ogwirizana komanso olimba a konkriti.
Chepetsani kulekana ndi kutuluka magazi:
HPMC imathandiza kuchepetsa chiopsezo cha tsankho ndi kutaya magazi mu zosakaniza za konkire, zomwe zimapangitsa kuti pakhale yunifolomu yambiri, yomveka bwino.
Nthawi yokhazikitsira bwino:
Kugwiritsiridwa ntchito kwa HPMC kungakhudze nthawi yoyika konkire, potero kumapereka mgwirizano pakati pa kugwira ntchito ndi kupititsa patsogolo mphamvu.
Zotsatira pamakina:
Ngakhale HPMC palokha mwina kumapangitsanso kulimba kwa konkire, zotsatira zake pa workability ndi adhesion zingakhudze mwachindunji katundu makina konkire, kuthandiza kulenga amphamvu ndi cholimba nyumba.
3. Zolemba ndi machitidwe abwino:
Kuwongolera mlingo:
Mlingo woyenera wa HPMC ndi wofunikira. Kupitilira muyeso kumatha kubweretsa zovuta, pomwe kutsitsa sikungapereke kusintha kofunikira.
kugwilizana:
Kugwirizana ndi admixtures ena konkire ndi zipangizo ayenera kuganiziridwa kupewa chilichonse chokhwima zochita kuti kusokoneza katundu wa konkire osakaniza.
Njira yothetsera:
Ngakhale HPMC imathandiza kusunga madzi, njira zochiritsira zoyenera ziyenera kugwiritsidwa ntchito kuti zitsimikizire kukhazikika kwa nthawi yayitali kwa konkire.
Ngakhale HPMC si wothandizira mwachindunji kuti bwino durability wa konkire, ntchito yake zosakaniza konkire akhoza kusintha workability, adhesion, ndi katundu zina, potero kuwongolera kulimba wonse wa nyumba konkire. HPMC iyenera kuganiziridwa ngati gawo la njira yophatikizira yopangira konkriti komanso njira zomanga kuti zikwaniritse zokhazikika komanso zolimba.
Nthawi yotumiza: Jan-19-2024