Kugwiritsa ntchito HPMC mu pulasitala yopangidwa ndi gypsum ndi zinthu za gypsum

Hydroxypropyl methylcellulose (HPMC) ndi chowonjezera chogwira ntchito kwambiri chomwe chimagwiritsidwa ntchito kwambiri pomanga, makamaka popanga ma pulasitala opangidwa ndi gypsum ndi gypsum.

(1) Zinthu zoyambira za HPMC

HPMC ndi nonionic cellulose ether yomwe imapezeka kudzera mu methylation ndi hydroxypropylation reactions. Zinthu zake zazikulu zimaphatikizapo kusungunuka kwamadzi, kukhuthala kwabwino kwambiri, kukhazikika kwamankhwala okhazikika komanso zinthu zabwino zopanga mafilimu. Zinthu izi zimapangitsa HPMC kugwiritsidwa ntchito kwambiri pazomangira.

(2) Kugwiritsa ntchito HPMC mu pulasitala yopangidwa ndi gypsum

1. Thickening wothandizira ntchito

Mu gypsum-based pulasitala, HPMC amagwiritsidwa ntchito makamaka ngati thickening wothandizira. Kusungunuka kwake m'madzi ndi kukhuthala kumatha kupititsa patsogolo kukhuthala ndi kukhazikika kwa stucco, kuletsa delamination ndi mvula, potero kumapangitsa kuti ntchito yomanga ikhale yabwino komanso yomaliza.

2. Kusunga madzi

HPMC ili ndi madzi osungira bwino kwambiri ndipo imatha kuchepetsa kutayika kwamadzi mwachangu. M'mapulasi opangidwa ndi gypsum, malowa amathandizira kukulitsa magwiridwe antchito ndikuwongolera zotsatira zomanga ndikupewa kusweka ndi kufupikitsa komwe kumachitika chifukwa cha kutuluka kwamadzi mwachangu.

3. Limbikitsani kumamatira

HPMC akhoza kumapangitsanso adhesion pakati pulasitala ndi gawo lapansi. Izi ndichifukwa choti filimu yopangidwa ndi HPMC itatha kuyanika imakhala ndi kusinthasintha komanso kumamatira, potero kumapangitsa kuti pakhale mgwirizano pakati pa pulasitala ndi khoma kapena magawo ena ndikuletsa kugwa.

(3) Kugwiritsa ntchito HPMC pazinthu za gypsum

1. Kupititsa patsogolo ntchito yokonza

Popanga zinthu za gypsum, HPMC imatha kupititsa patsogolo kusinthasintha komanso kufanana kwa slurry, kuchepetsa kutulutsa kwa thovu, ndikupangitsa kuti zinthuzo zikhale zolimba komanso zofananira. Pa nthawi yomweyo thickening zotsatira za HPMC kumathandiza kupanga ❖ kuyanika yosalala pamwamba pa mankhwala ndi bwino maonekedwe khalidwe la mankhwala.

2. Sinthani kukana kwa ming'alu

Kusungidwa kwa madzi kwa HPMC muzinthu za gypsum kumathandizira kuwongolera kutulutsa kwamadzi ndikuchepetsa kupsinjika kwamkati komwe kumachitika chifukwa cha kutuluka kwamadzi kosafanana, motero kumathandizira kukana ming'alu ndi mphamvu zonse za chinthucho. Makamaka m'malo owuma, mphamvu yosungira madzi ya HPMC ndiyofunikira kwambiri ndipo imatha kuteteza kusweka koyambirira kwa zinthu.

3. Kupititsa patsogolo makina

Maukonde ogawa bwino omwe amapangidwa ndi HPMC muzinthu za gypsum amatha kukulitsa kulimba komanso kukana kwazinthuzo. Izi zimapangitsa kuti zinthu za gypsum zisawonongeke panthawi yamayendedwe ndi kukhazikitsa, kukulitsa moyo wawo wautumiki.

(4) Ubwino wogwiritsa ntchito HPMC

1. Kupititsa patsogolo ntchito yomanga

Chifukwa HPMC imapangitsa kuti ntchito yomanga ikhale yopangidwa ndi gypsum-based pulasitala ndi gypsum, ntchito yomangayi ndi yofewa komanso yothandiza kwambiri, kuchepetsa kuchuluka kwa kukonzanso ndi kukonzanso, potero kumapangitsa kuti ntchito yomanga ikhale yabwino.

2. Kuteteza chilengedwe ndi chitetezo

Monga zinthu zachilengedwe, HPMC sipanga zinthu zovulaza panthawi yopanga ndikugwiritsa ntchito, ndipo imakwaniritsa zofunikira zachitetezo ndi chitetezo. Kuphatikiza apo, HPMC sichimamasula mpweya woipa pakugwiritsa ntchito, ndikupangitsa kuti ikhale yotetezeka kwa ogwira ntchito yomanga ndi ogwiritsa ntchito kumapeto.

3. Phindu lazachuma

Kugwiritsiridwa ntchito kwa HPMC kumatha kupititsa patsogolo magwiridwe antchito ndi mtundu wa zida zopangidwa ndi gypsum, potero kuchepetsa zinyalala zakuthupi ndikukonzanso ndalama ndikuwongolera phindu lazachuma. Pa nthawi yomweyo, dzuwa mkulu wa HPMC zimathandiza kuti zotsatira zazikulu zichitike ngakhale pang'ono kuwonjezera, ndipo ali ndi ntchito yabwino mtengo.

Monga chowonjezera chofunikira chomangira, HPMC ili ndi zabwino zambiri pakugwiritsa ntchito pulasitala yopangidwa ndi gypsum ndi gypsum. Kukula kwake kwabwino kwambiri, kusungirako madzi ndi kugwirizanitsa katundu sikumangopititsa patsogolo ntchito yomanga zinthu komanso ubwino wa chinthu chomalizidwa, komanso kumapangitsanso ubwino wachuma ndi kuteteza chilengedwe. Pomwe kufunikira kwamakampani omanga kumagwira ntchito kwambiri, zida zokomera chilengedwe zikuchulukirachulukira, chiyembekezo chogwiritsa ntchito HPMC muzopangidwa ndi gypsum chidzakulirakulira.