Hydroxypropyl methylcellulose (HPMC) ndi ether ya cellulose yosakhala ionic yopangidwa kuchokera ku cellulose yachilengedwe ya polymer kudzera mu njira zingapo zamakemikolo. Ndi ufa woyera wopanda fungo, wopanda kukoma komanso wopanda poizoni womwe umatupa kukhala yankho la colloidal loyera kapena lamtambo pang'ono m'madzi ozizira. Lili ndi makulidwe, kumangirira, kufalitsa, kusakaniza, kupanga filimu, kuyimitsa, kusakaniza, gelling, kugwira ntchito pamwamba, kusunga chinyezi komanso kuteteza colloides. Hydroxypropyl methylcellulose ndi methylcellulose zingagwiritsidwe ntchito mu zipangizo zomangira, makampani opanga utoto, utomoni wopangidwa, mafakitale a ceramic, mankhwala, chakudya, nsalu, ulimi, mankhwala a tsiku ndi tsiku ndi mafakitale ena.
Fomula ya mankhwala:
Hydroxypropylmethylcellulose (HPMC)[C6H7O2(OH)3-mn(OCH3)m(OCH2CH(OH)CH3)n]x
Kugwiritsa ntchito kwakukulu kwa hydroxypropyl methylcellulose HPMC mu zipangizo zomangira:
1. pulasitala yopangidwa ndi simenti
⑴ Kumathandiza kuti pulasitiki ikhale yofanana, kupangitsa kuti pulasitiki ikhale yosavuta kupukutidwa, kumathandizira kuti isagwe, kumathandizira kuti madzi aziyenda bwino komanso kuti madzi azituluka bwino, komanso kumathandizira kuti ntchito igwire bwino ntchito.
⑵ Kusunga madzi ambiri, kukulitsa nthawi yosungira matope, kukonza magwiridwe antchito, komanso kuthandizira kuti matope azisungunuka komanso kulimba kuti apange mphamvu zambiri zamakanika.
⑶ Yang'anirani momwe mpweya umalowera kuti muchotse ming'alu pamwamba pa chophimbacho ndikupanga malo osalala bwino.
2. Zopangidwa ndi pulasitala ndi gypsum zopangidwa ndi gypsum
⑴ Kumathandiza kuti pulasitiki ikhale yofanana, kupangitsa kuti pulasitiki ikhale yosavuta kupukutidwa, kumathandizira kuti isagwe, kumathandizira kuti madzi aziyenda bwino komanso kuti madzi azituluka bwino, komanso kumathandizira kuti ntchito igwire bwino ntchito.
⑵ Kusunga madzi ambiri, kukulitsa nthawi yosungira matope, kukonza magwiridwe antchito, komanso kuthandizira kuti matope azisungunuka komanso kulimba kuti apange mphamvu zambiri zamakanika.
⑶ Yang'anirani kusinthasintha kwa matope kuti apange chophimba chabwino kwambiri pamwamba pake.
3. Dothi la Masonry
⑴ Limbikitsani kumatirira pamwamba pa miyala, onjezerani kusunga madzi, komanso onjezerani mphamvu ya matope.
⑵ Kukweza kukhuthala ndi kusinthasintha kwa kapangidwe kake, ndikuwongolera kapangidwe kake; matope okonzedwanso ndi cellulose ether ndi osavuta kupanga, amasunga nthawi yomanga komanso amachepetsa ndalama zomangira.
⑶ Cellulose ether yosunga madzi ambiri, yoyenera njerwa zomwe zimayamwa madzi ambiri.
4. Chodzaza cholumikizira gulu
⑴Kusunga madzi bwino kwambiri, kumawonjezera nthawi yotsegulira komanso kumawonjezera magwiridwe antchito. Mafuta ambiri, kosavuta kusakaniza. ⑵ Kumawonjezera kukana kufooka ndi kukana ming'alu, kumawonjezera ubwino wa pamwamba pa chivundikiro. ⑶ Kumawonjezera kumatirira kwa pamwamba pa chivundikirocho ndikupereka mawonekedwe osalala komanso osalala.
5. Chomatira cha Matailosi ⑴Chosavuta kuumitsa zosakaniza, palibe zotupa, chimawonjezera liwiro la kugwiritsa ntchito, chimawonjezera magwiridwe antchito, chimasunga nthawi yogwirira ntchito ndikuchepetsa ndalama zogwirira ntchito. ⑵ Mwa kuwonjezera nthawi yotsegulira, kugwira ntchito bwino kwa matailosi kumatha kukonzedwa ndipo zotsatira zabwino kwambiri zomatira zimatha kuperekedwa.
6. Zipangizo zapansi zodziyimira payokha ⑴ zimapereka kukhuthala ndipo zingagwiritsidwe ntchito ngati zowonjezera zoletsa kusefukira kwa nthaka. ⑵Limbikitsani kupopa kwa madzi ndikuwonjezera luso lokonza nthaka. ⑶ Lamulirani kusunga madzi ndi kufupika, chepetsani ming'alu ndi kufupika kwa nthaka.
7. Utoto wochokera m'madzi ⑴Umachepetsa mvula yolimba ndikuwonjezera moyo wa chidebecho. Uli wokhazikika kwambiri pazachilengedwe, umagwirizana bwino ndi zinthu zina. ⑵ Umapangitsa kuti madzi aziyenda bwino, umapereka mphamvu zabwino zoletsa kusweka, zoletsa kutsika komanso kusinthasintha, komanso umatsimikizira kuti pamwamba pake pamakhala bwino kwambiri.
8. Ufa wa pepala lophimba matabwa ⑴ Sungunukani mwachangu popanda zibowo, zomwe ndi zabwino posakaniza. ⑵ zimapereka mphamvu yolimba.
9. Bolodi la simenti lotulutsidwa (1) lili ndi mgwirizano wabwino komanso mafuta ambiri, ndipo limathandiza kuti zinthu zotulutsidwazo zigwire bwino ntchito. ⑵ Limalimbitsa mphamvu zobiriwira, limathandiza kuti madzi azilowa bwino komanso kuti zinthuzo zisamaundane, komanso limapangitsa kuti zinthuzo zibereke bwino.
10. Zinthu za HPMC zomwe zimagwiritsidwa ntchito pa matope osakaniza kale. Zinthu za HPMC zomwe zimagwiritsidwa ntchito pa matope osakaniza kale zimakhala ndi madzi okwanira mu matope osakaniza kale kuposa zinthu wamba, zomwe zimapangitsa kuti zinthu zosapangidwa ndi simenti zikhale ndi madzi okwanira, zomwe zimateteza kwambiri kuchepa kwa mphamvu yomangira chifukwa cha kuuma kwambiri, komanso ming'alu yomwe imabwera chifukwa cha kuuma. HPMC ilinso ndi mphamvu yolowetsa mpweya. Chinthu cha HPMC chomwe chimagwiritsidwa ntchito makamaka pa matope osakaniza kale chili ndi thovu lokwanira lolowetsedwa mpweya, lofanana komanso laling'ono, lomwe lingathandize kulimbitsa ndi kusalala kwa matope osakaniza kale. Chinthu cha HPMC chomwe chimagwiritsidwa ntchito makamaka pa matope osakaniza kale chili ndi mphamvu yochedwetsa, yomwe ingatalikitse nthawi yotsegulira matope osakaniza kale ndikuchepetsa zovuta zomangira.
Nthawi yotumizira: Meyi-24-2023