HPMC yomanga

Hydroxypropyl methyl cellulose (HPMC) ndi ether yosakhala ionic cellulose yochokera ku cellulose yachilengedwe. Amagwiritsidwa ntchito kwambiri pomanga ngati thickening wothandizira, binder, dispersant, emulsifier, film-forming agent, protective colloid, and suspending agent.

HPMC ndi ufa woyera mpaka woyera, wopanda fungo, wosakoma, komanso wopanda poizoni. Imasungunuka m'madzi ozizira ndipo imapanga yankho lomveka bwino, lowoneka bwino. Sisungunuka mu zosungunulira organic monga ethanol, acetone, benzene. HPMC ndi anionic polysaccharide yopangidwa ndi mzere wozungulira wa mayunitsi a D-glucose olumikizidwa ndi β-1,4-glycosidic bond. Amapangidwa ndi methyl chloride ndi hydroxypropyl chloride yokhala ndi cellulose.

HPMC imagwiritsidwa ntchito kwambiri pomanga chifukwa cha zinthu zake zabwino kwambiri. Ikhoza kugwiritsidwa ntchito ngati thickening wothandizira kuonjezera mamasukidwe akayendedwe a amadzimadzi njira ndi kusintha workability wa simenti ndi matope. Itha kugwiritsidwanso ntchito ngati chomangira kuti apititse patsogolo kumamatira kwa simenti ndi matope ku magawo. HPMC itha kugwiritsidwanso ntchito ngati dispersant kuchepetsa kufunikira kwa madzi a simenti ndi matope ndikuwongolera magwiridwe antchito awo. Kuphatikiza apo, HPMC itha kugwiritsidwa ntchito ngati emulsifier kuti ipititse patsogolo kukhazikika kwa zosakaniza za simenti ndi matope.

HPMC itha kugwiritsidwanso ntchito ngati filimu kupanga wothandizila kusintha madzi kukana simenti ndi matope. Itha kugwiritsidwanso ntchito ngati colloid yoteteza kuti muchepetse kupsinjika kwa simenti ndi matope ndikuwongolera magwiridwe antchito awo. Pomaliza, HPMC itha kugwiritsidwa ntchito ngati woyimitsa kuwongolera kuyimitsidwa kwa zosakaniza za simenti ndi matope.

HPMC ndi chowonjezera chogwira ntchito komanso chosunthika pazomangamanga. Ikhoza kupititsa patsogolo ntchito ya simenti ndi matope, kuchepetsa kufunika kwa madzi, kupititsa patsogolo kumamatira kumagulu, ndi kupititsa patsogolo madzi awo. Kuphatikiza apo, itha kugwiritsidwa ntchito ngati emulsifier, wopangira mafilimu, colloid yoteteza, komanso kuyimitsa. HPMC ndi chowonjezera chachuma komanso chotetezeka chomwe chingagwiritsidwe ntchito kukonza magwiridwe antchito a simenti ndi matope.