Hydroxypropyl methylcellulose (HPMC), monga imodzi mwa ma ether ofunikira kwambiri a cellulose mu makina amakono a dry-mix mortar, imagwira ntchito yofunika kwambiri mu zomatira za matailosi. Chifukwa cha kukula kwa matailosi, zovuta za malo omangira, komanso kusintha kosalekeza kwa miyezo ya mphamvu yomangira, ntchito ya HPMC mu kapangidwe kake imakhala yofunika kwambiri. Kaya ndi zomatira za matailosi zamtundu wa C1/C2 kapena makina omatira ogwira ntchito kwambiri a matailosi olemera, matailosi akuluakulu, ndi matailosi osayamwa madzi ambiri, HPMC imagwira ntchito yofunika kwambiri pakukonza magwiridwe antchito, kulimbitsa kulimba, komanso kukulitsa mphamvu yomangira.
1. Kukonza Kusunga Madzi Kuti Madzi Akhale Okwanira
Ma glue a matailosi ndi ma mortars opyapyala, okhala ndi makulidwe a 3–5 mm. Amatha kutaya madzi mwachangu chifukwa cha kuyamwa madzi mwachangu ndi substrate, kutentha kwambiri, kapena kuumitsa ndi mphepo.
HPMC imasunga bwino madzi omasuka mwa kupanga netiweki yolimba mu matope, zomwe zimapangitsa kuti guluu wa matailosi usunge madzi. Kawirikawiri, HPMC yapamwamba imatha kusunga madzi ndi 90%–98%.
Zotsatira za kusunga madzi ndi izi:
Kuchepetsa kuchuluka kwa madzi m'simenti, kukulitsa mphamvu yolumikizirana;
Kupewa kutaya madzi msanga, ming'alu, ndi kusweka kwa madzi;
Kukonza kukhazikika kwa zomatira za matailosi ku matailosi osayamwa madzi ambiri (monga matailosi a porcelain ndi matailosi opakidwa glaze).
2. Kukonza Makhalidwe a Rheological ndi Kukulitsa Kugwira Ntchito
Kugwira ntchito bwino ndi chizindikiro chofunikira kwambiri chosonyeza ngati guluu wa matailosi adzalandiridwa ndi magulu omanga. HPMC imawongolera kwambiri mphamvu za rheological za matope, zomwe zimapangitsa kuti guluu wa matailosi uzitha kufalikira bwino komanso kukhala ndi thixotropy.
Mawonetseredwe akuluakulu a rheology yabwino:
thixotropy yabwino: Kuduladula, kosavuta kufalitsa; kuchira msanga mutayimirira, osagwa.
Kupaka mafuta bwino: Kumapangitsa kuti trowel ikhale yosavuta, komanso kumawonjezera luso lomanga.
Kukhazikika bwino kwa phala ndi kukhazikika: Kumaletsa kugawikana kwa matope, kulekanitsa, ndi kutuluka magazi.
Pa matailosi akuluakulu komanso matailosi okhala ndi makoma ambiri, mphamvu za thixotropic za HPMC ndizofunikira kwambiri, zomwe zimaletsa kutsetsereka kwa matailosi ndikuwonjezera magwiridwe antchito oletsa kutsetsereka pamalo oyima.
3. Nthawi Yotseguka Yabwino ndi Nthawi Yosinthira
Mu kapangidwe ka matailosi amakono, kukulitsa nthawi yotsegulira matailosi kumathandizira kuti matailosi agwire bwino ntchito komanso kuchepetsa kukonzanso.
HPMC imachedwetsa kusungunuka kwa madzi kuchokera pamwamba pa matope, zomwe zimapangitsa kuti matopewo akhale onyowa komanso zimapatsa antchito nthawi yokwanira yomaliza kuyiyika ndikusintha.
Zotsatira wamba:
Nthawi yotsegulira ikhoza kukulitsidwa mpaka mphindi 20-30.
Kuwonjezeka kwa nthawi yosinthira kumathandiza kuti matailosi akuluakulu akhazikike.
HPMC ndi chowonjezera chofunikira kwambiri pa zomatira za matailosi zamtundu wa C2 zomwe zimafuna nthawi yayitali yotseguka.
4. Mphamvu Yowonjezera Yogwirizanitsa ndi Kukhazikika kwa Kapangidwe
HPMC si "chomangira" m'lingaliro la mankhwala, koma imawongolera kwambiri mphamvu yomangira matailosi mwa kukonza njira yothira madzi a simenti, kukonza kapangidwe ka matope, ndikuwonjezera kuchuluka kwa matope.
Zowonjezera zikuphatikizapo:
Kusunga madzi kumathandiza kuti madzi azikhala ndi madzi okwanira, motero kupanga zinthu zambiri za CSH gel.
Amakonza kapangidwe ka matope ndipo amawongolera luso lolumikizana pakati pa nkhope.
Zimaletsa mipata pakati pa nkhope ndipo zimathandizira kuti mgwirizano ukhale wabwino komanso ukhale wolimba.
Zotsatira zake zimawonekera makamaka pakulumikizana kwa matailosi okhala ndi vitrified ndi matailosi osayamwa madzi ambiri.
5. Kukana Kutsetsereka ndi Kukana Kutsika Kwambiri
Kukana kutsetsereka panthawi yoyika matailosi oyima ndi chizindikiro chofunikira cha zomatira za matailosi.
Mphamvu zambiri za thixotropic za HPMC zimathandiza kuti guluu wa matailosi ubwererenso mphamvu zake mwachangu akagwiritsa ntchito, zomwe zimathandiza kuti matailosi asagwere pansi chifukwa cha kulemera kwawo.
Makamaka popanga matailosi akuluakulu ndi matailosi akuluakulu okhala ndi glaze, kukhuthala kwakukulu, komwe kumasinthidwa moyenera kwa HPMC ndikofunikira kwambiri kuti matailosi asagwedezeke.
6. Malangizo Okhudza Mlingo wa HPMC ndi Kusankha Kukhuthala kwa Magazi
Mu mapangidwe a matailosi omatira, kuchuluka kwa HPMC nthawi zambiri kumakhala kochepa, koma mphamvu yake ndi yayikulu.
Kuchuluka kwa zinthu zomwe zawonjezeredwa: 0.2%–0.4%
Kuchuluka kwake kumadalira: mtundu wa simenti, chiŵerengero cha zodzaza, malo omangira, ndi kukula kwa matailosi. Malangizo a kukhuthala (25°C, yankho la 2%):
Guluu wa matailosi wamba wa mtundu wa C1: 40,000–60,000 mPa·s
Guluu wa matailosi wa mtundu wa C2 wochita bwino kwambiri: 75,000–100,000 mPa·s kapena kupitirira apo
Chomatira cha matailosi cha matailosi akuluakulu: ≥100,000 mPa·s, kalasi yapamwamba ya thixotropic
HPMC, monga chinthu chofunikira kwambiri mu makina omatira matailosi, imapereka ubwino wambiri waukadaulo pakukweza kusunga madzi, rheology, mphamvu yolumikizira, komanso kukana kutsetsereka. Kaya pa kukhazikitsa matailosi a pakhoma ndi pansi kapena kugwiritsa ntchito matailosi akuluakulu apamwamba, kusankha ndi kugwiritsa ntchito HPMC yapamwamba ndikofunikira kwambiri kuti zitsimikizire kuti matailosi amagwira ntchito bwino komanso kuti zomangamanga zikhale zodalirika. Kwa opanga matailosi omwe akufuna kugwira ntchito bwino, kusankha mtundu woyenera wa HPMC ndikofunikira.
Nthawi yotumizira: Disembala-11-2025