HPMC (Hydroxypropyl Methyl Cellulose) ndi HEMC (Hydroxy Ethyl Methyl Cellulose) ndi ma ether a cellulose omwe amagwiritsidwa ntchito kwambiri popanga zinthu zomangira chifukwa cha mawonekedwe awo apadera. Ndi ma polima osungunuka m'madzi ochokera ku cellulose, polima wachilengedwe womwe umapezeka m'makoma a maselo a zomera. HPMC ndi HEMC zimagwiritsidwa ntchito ngati zowonjezera muzinthu zosiyanasiyana zomangira kuti ziwonjezere mawonekedwe awo ndikuwonjezera kupangika.
Nazi zina mwa ntchito za HPMC ndi HEMC pa zipangizo zomangira:
Zomatira za Matailosi: HPMC ndi HEMC nthawi zambiri zimawonjezeredwa ku zomatira za matailosi kuti zigwire bwino ntchito komanso kuti zikhale zolimba. Ma polima awa amagwira ntchito ngati zothina, zomwe zimapangitsa kuti nthawi yogwira ntchito ikhale yotseguka bwino (nthawi yomwe zomatirazo zimagwiritsidwira ntchito) komanso zimachepetsa kutsika kwa matailosi. Zimathandizanso kuti zomatirazo zikhale zolimba ku zinthu zosiyanasiyana.
Ma Mortar Opangidwa ndi Simenti: HPMC ndi HEMC zimagwiritsidwa ntchito mu ma mortar opangidwa ndi simenti monga ma plaster, ma plaster ndi ma exterior insulation finish systems (EIFS). Ma polima awa amathandiza kuti matope agwire ntchito mosavuta, zomwe zimapangitsa kuti azifalikira mosavuta komanso azigwiritsidwa ntchito mosavuta. Amathandizanso kuti matope azigwirizana, amachepetsa kuyamwa kwa madzi komanso amathandiza kuti ma mortar azigwira ntchito bwino m'malo osiyanasiyana.
Zinthu zopangidwa ndi gypsum: HPMC ndi HEMC zimagwiritsidwa ntchito popanga zinthu zopangidwa ndi gypsum monga ma plaster a gypsum, ma joint compounds ndi ma underlayments odziyimira pawokha. Amagwira ntchito ngati zinthu zosungira madzi, kukonza magwiridwe antchito ndikuwonjezera nthawi yoyika zinthuzo. Ma polima awa amathandizanso kukana ming'alu, kuchepetsa kufupika komanso kumamatira bwino.
Ma Compound Odziyimira Payokha: HPMC ndi HEMC zimawonjezeredwa ku ma compound odziyimira payokha kuti ziwongolere kuyenda ndi kusinthasintha. Ma polima awa amathandiza kuchepetsa kukhuthala, kuwongolera kuyamwa kwa madzi ndikupereka mawonekedwe abwino pamwamba. Amathandizanso kumamatira kwa ma compound ku substrate.
Kulumikiza: HPMC ndi HEMC zingagwiritsidwe ntchito polumikiza matailosi ndi malo omangira. Zimagwira ntchito ngati zosinthira rheology, kukonza kayendedwe ka madzi ndi kugwira ntchito bwino kwa ma grout. Ma polima awa amachepetsanso kulowa kwa madzi, kumathandizira kumamatira komanso kumawonjezera kukana kwa ming'alu.
Ponseponse, HPMC ndi HEMC zimagwiritsidwa ntchito kwambiri pa zipangizo zomangira chifukwa cha kuthekera kwawo kukonza kugwiritsiridwa ntchito, kumamatira, kusunga madzi, komanso magwiridwe antchito azinthu zonse. Amalimbikitsa njira zabwino zomangira mwa kukonza kulimba ndi khalidwe la zinthu zosiyanasiyana zomangira.
Nthawi yotumizira: Juni-08-2023