HPMC (hydroxypypyl methylcellulose) ndi nkhani yogwiritsidwa ntchito kwambiri poimba m'matambo, makamaka ku gypsum ndi matope osakanizika-simenti. Monga cellulose yosinthidwa, HPMC ili ndi zinthu zapadera zathupi ndi mankhwala, zomwe zimapangitsa kuti likhale gawo lofunikira pomanga zida.
1. Zoyambira za HPMC
Hopmc ndi mafuta osungunuka, opanda utoto, opanda utoto wokhala ndi madzi abwino osungunuka, rhelogy, zopindika ndi mawonekedwe a makanema. Mapangidwe a HPMC ali ndi hydroxypyl ndi methyl m'malo mwa methyl, zomwe zimapangitsa kuti zikhale ndi hydrophilicity yabwino komanso kukhazikika, ndipo zimatha kubereka zipatso zabwino ngati simenti ndi gypsum. Posintha kulemera kwake, kuchuluka kwa matenda a hydroxypyl ndi methyl, rhelogy ndi ntchito zina za HPMC kumatha kusintha kuti azolowere njira zosiyanasiyana.
2. Kugwiritsa ntchito HPMC mu matope owuma
Matope a gypsum owuma ndi malo ogulitsira ndi gypsum ngati chinthu chachikuluchi, chomwe chimagwiritsidwa ntchito kwambiri pakhoma la khoma, chokongoletsera ndi kukonza mapulojekiti. Kupanga matombidwe a gypsum nthawi zambiri kumatengera kusakanikirana kowuma, ndiye kuti, gypsum, mafayilo, owonjezera owonjezera, zowonjezera zina ndi zinthu zina za ufa zimasakanikirana mwachindunji. Monga owonjezera owonjezera, hpmc amasewera maudindo otsatirawa m'matope a gypsum:
(1) Kukonza zojambulajambula za matope
Matope a gypsum omwe nthawi zambiri amafunika kukhala ndi mwayi wabwino panthawi yomanga, monga chotsatsa chabwino, mawonekedwe owoneka bwino komanso osavuta. HPMC imathandizira za matope, kupanga chivundi kukhala ndi kusasinthika koyenera, kupewa zovuta zomanga chifukwa chokhala wouma kwambiri kapena wonyowa kwambiri. Imatha kusintha bwino matope ogwiritsira ntchito matope ndikupitirira nthawi yotseguka, potero amawongolera bwino ntchito yomanga.
(2) Kukonza madzi osungira matope
Zinthu za gypsum zimakhala ndi mayamwidwe a gypsum, omwe amatha kupangitsa matope kuti awume mwachangu, mwakutero amakhudza kugwirira ntchito komanso kuuma komaliza kwa matope. HPMC ili ndi chisungiko chabwino chamadzi ndipo imatha kuchepetsa madzi otuluka, poganiza kuti matopewo amadziwa, onetsetsani kuti matope a gypsum-active amakhala nthawi yayitali pomanga. Izi ndizofunikira kwambiri pokonzanso ntchito.
(3) Kukonza mphamvu ndi kukhazikika kwa matope
HPMC siyingangosintha kugwiritsidwa ntchito kwa matope, komanso kusintha mphamvu zake ndi kulimba. Posintha mlingo ndi mtundu wa hpmc, makina a matope amatha kukhazikika, ndipo mphamvu yovuta yoponderezedwa ndi kuthekera kwa matope kungatheke. Nthawi yomweyo, hpmc imatha kukulitsa matope ndi kuchepetsa ming'alu yoyambitsidwa ndi kuyanika kapena kusintha kwa kutentha, potengera kukhazikika kwa matope.
3. Kugwiritsa ntchito HPMC mu matope osakanikirana
Matope osakanikirana owuma amagwiritsidwa ntchito kwambiri pomanga monga makoma, pansi, khomo lakunja limatulutsa, popata, ndi zina zambiri. M'matope a Smentar-adalemba, gawo la HPMC limawonetsedwa ndi izi:
(1) Kukonza madzi ndi kugwirira ntchito matope
Mu matope a simenti, hpmc, monga kukula, kumatha kusintha madzimadzi, kumapangitsa kuti apange ndikugwira. Panthawi yomanga, madzi a matope amakhudzanso luso logwirizana. Powonjezera kuchuluka kwa matope oyenera, kusasinthika kwake kumatha kusintha, kotero kuti matope atha kuwonetsa bwino malo omanga osiyanasiyana.
(2) Sinthani chitetezo chamadzi ndikuchepetsa kutsika kwamadzi
Panthawi ya matope a simenti, madzi akayamba kusinthika msanga, ndizosavuta kuyambitsa makina amadzi, omwe amakhudza mphamvu ndi mawonekedwe a matope. HPMC imatha kusintha madzi osungira matope a simenti, onetsetsani kuti pali kufanana, onetsetsani kuti pali kufanana, onetsetsani kuti pali kufanana kwa matope.
(3) Kugonjera
Panthawi youmitsa, matope a simenti nthawi zambiri amangokhala, zomwe zimapangitsa ming'alu pamtunda kapena mkati mwa matope. HPMC moyenera zimachepetsa matope a simenti pokonza zomwe zimapangitsa kuti zizolowezi za matope. Izi zotsutsana ndi zotsutsana sizingosintha zikhalidwe za matope, komanso zimawonjezera kulimba kwake pakugwiritsa ntchito kwa nthawi yayitali.
(4) Chepetsa nthawi yolimba
HPMC imatha kusintha matope a simenti, poyerekeza ndi nthawi yolimba. Izi ndizofunikira kwambiri mukamagwira ntchito kutentha kwambiri kapena pamalo akulu, chifukwa zimatha kupereka nthawi yogwira ntchito yomanga ndikuchepetsa mavuto omanga chifukwa cha kuuma msanga.
4. Ubwino wa HPMC ku gypsum ndi matope osakanikirana
(1) Chitetezo cha rhelogical
HPMC imatha kusintha zinthu zaubweya wazomera, kuphatikiza, kuphatikiza kukula, kukweza kwa mafayilo, ndi kusungidwa kwamadzi, poyankha kumayendedwe omanga matope. Mwa kusintha kuchuluka kwa hpmc, zomangamanga za matope zitha kuthandizidwa kuti tikwaniritse zosowa za malo omanga.
(2) Chitsange chabwino komanso kusungidwa kwamadzi
Kaya mu matope a gypsum kapena simenti, hpmc imatha kupititsa patsogolo modetsa ndi kusungidwa kwamadzi kwa matope, kuchepetsa kuwonongeka kwa matope, ndikuonetsetsa kuti mukuyenda bwino.
(3) Kuteteza zachilengedwe ndi chitetezo
HPMC ndi mankhwala osadandaula, osawoneka bwino, achilengedwe omwe amakwaniritsa zofunikira za kutetezedwa ndi zachilengedwe zamakono. Chifukwa chake, kugwiritsa ntchito kwa HPMC sikumatha kusintha matope ogwirira ntchito, komanso onetsetsani kuti chitetezo cha zomanga.
HPMC imachita mbali yofunika pakugwiritsa ntchito gypsum ndi simenti yopanda matope. Zimakhala bwino kugwirira ntchito, nyonga ndi kukhazikika kwa matope posintha rheology, zomata, kusungidwa kwamadzi ndi zina zamatope. Powonjezera zomwe zikuwonjezereka kwa zinthu zomanga zapamwamba popanga zomanga, zomwe zikugwiritsidwa ntchito kwa HPMC ndizowonjezera, makamaka pakupanga matope owuma, hpmc.
Post Nthawi: Feb-15-2025