HPMC (hydroxypypyl methyl cellulose) ndi polymer zinthu zomwe zimagwiritsidwa ntchito popanga zomangira, makamaka muzinthu zopangidwa ndi madementi ndi zida zama gypsum. Ili ndi madzi abwino kusungunuka, kutsatira madzi osungirako madzi komanso katundu wathu, motero amagwiritsidwa ntchito kwambiri mu matope, putty ufa, zomata za matayala ndi zinthu zina.
1. Zomwe zimayambitsa shrinkage ndi kusokonekera kwa zomangamanga
Panthawi youmitsa, zomangira zomangira nthawi zambiri zimasunthira mawu chifukwa cha madzi osintha madzi, zimachitika ndi kusintha kwa zinthu zachilengedwe kunja, kumapangitsa kutsindika zachilengedwe kunja, kumapangitsa kutsindika kwa chilengedwe chakunja, kumapangitsa kupsinjika kwa zinthu zachilengedwe. Mitundu ikuluikulu ya shrinkage imaphatikizapo:
Phula lapulidi
Kuuma kouma: Pambuyo pazinthuzo, kumawonekera mlengalenga kwa nthawi yayitali, ndipo madziwo amatuluka pang'onopang'ono, chifukwa cha shrinka pang'onopang'ono.
Kutentha: Kusintha kwa voliyumu yoyambitsidwa ndi kutentha kumasintha, makamaka m'malo otentha kwambiri pakati pa usana ndi usiku.
Autogenious shrinkage: Pa nthawi ya simenti hydraction njira, voliyumu yamkati imafota chifukwa cha kumwa madzi ndi mankhwala opatsirana.
Ma shrings amakono nthawi zambiri amayambitsa kupsinjika mkati mwazinthuzi, pamapeto pake ndikupangitsa ma virubs kapena ming'alu, yomwe imakhudza kukhazikika ndi zokopa za nyumba yomanga. Pofuna kupewa izi, zowonjezera zimafunikira kukonza magwiridwe ake, ndipo HPMC ndi imodzi yaiwo.
2. Makina a zochita za HPMC
HPMC imachita mbali yofunika kwambiri yochepetsera kugwedeza ndi kung'ambika kwa zomangira, zomwe zimatheka kudzera munjira zotsatirazi:
Kusunga kwamadzi: HPMC imakhala ndi mphamvu yolimba yamadzi ndipo imatha kupanga filimu yosungiramo madzi mu matope kapena ufa kuti muchepetse madzi opopera. Popeza madzi ofulumira mkati mwazinthuzi adzayambitsa pulasitiki, madzi osungirako HPMC amatha kuchepetsa moyenera zochitika zoseketsa, polimbikitsa kuchuluka kwa simenti komanso kuchepetsa ming'alu yoyambitsidwa ndi Kuwonongeka kwamadzi nthawi yowuma. Kuphatikiza apo, HPMC imatha kusintha magwiridwe antchito omwe ali pansi pa zonyowa komanso owuma ndikuchepetsa kuwonongeka komwe kumachitika chifukwa cha kuchepa kwa madzi.
Kukula ndi kulimbikitsa: hpmc ndi wokulirapo zomwe zingawonjezere kusanthula ndi matope a matope ndikuwonjezera chotsatira chake. Pulogalamu yomanga, ngati zinthuzo ndi zowonda kwambiri, ndizosavuta kuwonongeka kapena kuwonongeka, zomwe zimapangitsa kuti mpweya ukhalepo kapena ming'alu. Pogwiritsa ntchito HPMC, matope amatha kukhalabe maso owoneka bwino, ndikuwonjezera mphamvu ndi kachulukidwe kazinthu pambuyo pomanga, ndikuchepetsa kuthekera kwa kusweka. Kuphatikiza apo, HPMC imatha kukulitsa kusokonekera kwa zinthuzo ndikusintha kukwiya kwake.
Sinthani kusintha kwa zinthuzi: mamolekyu a HPMC amatha kusewera mbali ina pakukhalitsani zinthu zina zosinthana ndi zinthu zina zochokera ku Stements kapena zida zama grepsum, kuti zinthu zizikhala bwino pambuyo pochiritsa. Popeza zopangira zomanga nthawi zambiri zimagonjetsedwa kapena kugwada nkhawa kumasinthasintha ndi katundu, mutatha kuwonjezera HPMC, komwe kumatha kuyamwa zakunja ndikupewa kusweka.
Lamulirani kuchuluka kwa simenti: mu zinthu za simenti, kuthamanga kwa kuchuluka kwa ma hydration zomwe zimachitika mwachindunji zimakhudzanso magwiridwe antchito. Ngati mankhwala olimbitsa thupi achita msanga, kupsinjika mkati mwa zinthu sikungamasulidwe mu nthawi, zomwe zimayambitsa ming'alu. HPMC imatha kuchepetsa kuchuluka kwa mankhwalawa pogwiritsa ntchito madzi osungira madzi ndikudziteteza kuti asataye madzi mwachangu kwambiri, motero pewani izi mofulumira komanso movutikira panthawi yolimba.
Sinthani magwiridwe antchito: HPMC imatha kusintha magwiridwe antchito omanga, makamaka kuwonetsedwa mu madzi ake abwino, kusungidwa kwamadzi ndikupatsa mafano opangidwa ndi zomanga zoipa zosayenera. Itha kupanga matope, putten ufa, etc. Kufalikira ndi mulingo pakumanga, sinthani kuchuluka kwa zinthu, ndikuchepetsa mphamvu zonse za zida zoyambilira chifukwa chomanga galimoto.
3. Kugwiritsa ntchito HPMC mu zomangamanga zina
Tile zomatira: HPMC imatha kusintha ma tambala a anti-stack a ma tile, onetsetsani kuti matailosi amaphatikizidwanso ndi gawo lapansi mukamakhazikika, ndikuchepetsa kuwonongeka kapena kuwonongeka chifukwa cha kupsinjika. Kuphatikiza apo, zotsatira za kuchuluka ndi madzi zosungidwa za HPMC zimathandizanso mataima kuti azikhala nthawi yayitali mutakhala motalikirana, kukonza zomangamanga, ndikuchepetsa ming'alu yoyambitsidwa, ndikuchepetsa ming'alu yopangidwa ndi kuchira kosagwirizana.
Pukuta la putty: Pansi pa punty ufa, malo osungira madzi a HPMC angalepheretse kuthwa msanga nthawi yowuma, ndikuchepetsa shrinkage ndi kuwonongeka chifukwa cha kutaya kwamadzi. Nthawi yomweyo, zotsatira zakumapeto kwa HPMC kumatha kusintha magwiridwe antchito omanga, kumapangitsa kuti zikhale zosavuta kugwiritsa ntchito khomalo, ndikuchepetsa ming'alu yoyambitsidwa ndi ntchito yosagwirizana.
Matope: Kuchulukitsa HPMC kwa matope bwino kumatha kusintha magwiridwe ake, kupangitsa matope kukhala owoneka bwino pomanga, kuchepetsa tsankho, ndikutsatira mavosi a matope. Nthawi yomweyo, madziwo apangitsa kuti madziwo asanduke pang'onopang'ono panthawi yolimba ya matope, kupewa matenda a shrination.
4. Kukwaniritsa kugwiritsa ntchito HPMC
Kuwongolera kwa Mlingo: Kuchuluka kwa HPMC yowonjezera kumapangitsa kuti pakhale kofunikira kwambiri, ndipo nthawi zambiri pamafunika kusinthidwa molingana ndi zochitika zapadera ndi zochitika zina. HPMC yochulukirapo idzapangitsa kuti zinthuzo zikhale zokulirapo kwambiri, zomwe zimakhudza zomanga; Ngakhale osakwanira hpmc sangathe kusewera gawo la kusungidwa kwamadzi ndikukula momwe ziyenera.
Gwiritsani ntchito ndi zina zowonjezera: hpmc nthawi zambiri zimagwiritsidwa ntchito limodzi ndi zina zowonjezera zamadzi (monga masinthidwe amadzi, othandizira a mpweya, ma pulasitiki, ndi zina) kuti mukwaniritse zabwino. Mukamagwiritsa ntchito, ndikofunikira kulingalira kuyanjana kwa zowonjezera zosiyanasiyana kuti mupewe kusintha zinthu zina.
Monga chowonjezera chothandiza, hpmc imakhala ndi mphamvu yochepetsera kuchepetsedwa komanso kusokonekera kwa zida zomangira. Zimachepetsa ming'alu yoyambitsidwa ndi kutaya kwamadzi komanso kupsinjika kwa madzi posungira madzi, ndikukula, kusinthasintha kwa zinthuzo ndikusintha muyeso wa simentart hydrate. Kugwiritsa ntchito moyenera HPMC sikumangowonjezera ntchito yomanga nkhaniyo, komanso imawonjezera moyo wanyumbayo ndikuchepetsa mtengo wokonzedwa pambuyo pake. Ndi kupita patsogolo kosalekeza kwaukadaulo wamalingaliro, kugwiritsa ntchito HPMC m'gawo lomanga kudzakhala kwakukulu komanso kuya.
Post Nthawi: Sep-21-2024