Hydroxypropyl methylcellulose (HPMC)ndi ether yopanda ionic cellulose yomwe imagwiritsidwa ntchito kwambiri muzomangamanga, makamaka popanga zinthu zopangidwa ndi simenti. Ntchito zake zazikulu zikuphatikizapo kukonza kusungirako madzi, makulidwe ndi zomangamanga zazinthu komanso kupititsa patsogolo makina azinthuzo.
1. Kupititsa patsogolo ntchito yosunga madzi
HPMC ili ndi zabwino zosungira madzi. Muzinthu zopangira simenti, kutaya madzi msanga kumatha kukhudza momwe simenti imayendera, zomwe zimapangitsa kuti pakhale mphamvu zosakwanira, kusweka, ndi zovuta zina. HPMC imatha kuteteza kutuluka kwa chinyezi popanga filimu wandiweyani polima mkati mwazinthu, motero kumatalikitsa nthawi ya simenti ya hydration. Ntchito yosungira madzi iyi ndi yofunika kwambiri pa kutentha kwakukulu kapena malo owuma, ndipo imatha kupititsa patsogolo kwambiri zomangamanga ndi kukonza matope, konkire ndi zipangizo zina.
2. Kupititsa patsogolo kamangidwe ndi ntchito
HPMC ndi thickener imayenera. Kuwonjezera pang'ono HPMC ku zipangizo zochokera simenti akhoza kwambiri kuonjezera mamasukidwe akayendedwe a zinthu. Kukhuthala kumathandizira kuti slurry isawonongeke, kutsika kapena kukhetsa magazi pakagwiritsidwa ntchito, komanso kupangitsa kuti zinthuzo zikhale zosavuta kufalikira komanso kusanja. Komanso, HPMC amapereka chuma amphamvu adhesion, bwino adhesion wa matope pa zinthu m'munsi, ndi amachepetsa zinyalala zakuthupi pa ntchito yomanga ndi wotsatira kukonza.
3. Kulimbikitsa kukana ming'alu
Zipangizo zopangidwa ndi simenti zimakhala zosavuta kusweka chifukwa cha kutuluka kwa madzi ndi kuchepa kwa voliyumu panthawi yowumitsa. Makhalidwe osungira madzi a HPMC amatha kukulitsa gawo la pulasitiki la zinthuzo ndikuchepetsa chiopsezo cha ming'alu ya shrinkage. Kuphatikiza apo, HPMC imabalalitsa bwino kupsinjika kwamkati mwa kukulitsa mphamvu yomangirira ndi kusinthasintha kwa zinthuzo, ndikuchepetsanso kuchitika kwa ming'alu. Izi ndizofunikira makamaka pamatope ocheperako komanso zida zodziyimira pawokha.
4. Sinthani kulimba komanso kukana kuzizira kwamadzi
Mtengo wa HPMCimatha kupititsa patsogolo kachulukidwe kazinthu zopangira simenti ndikuchepetsa porosity, potero kumapangitsa kuti zinthuzo zisawonongeke komanso kukana dzimbiri. M'malo ozizira, kukana kuzizira kwazinthu kumakhudzana mwachindunji ndi moyo wawo wautumiki. HPMC imachepetsa kuwonongeka kwa zinthu zopangidwa ndi simenti panthawi yachisanu ndikuwongolera kukhazikika kwake posunga madzi ndikuwonjezera mphamvu zomangira.
5. Kupititsa patsogolo makina
Ngakhale ntchito yaikulu ya HPMC si kuonjezera mwachindunji mphamvu, mosalunjika bwino makina katundu wa zipangizo simenti ofotokoza. Mwa kukhathamiritsa kusungika kwa madzi komanso kugwira ntchito bwino, HPMC imathira simenti mokwanira ndikupanga mawonekedwe olimba a hydration, potero kumapangitsa kuti zinthuzo zikhale zolimba komanso zosinthika. Kuphatikiza apo, magwiridwe antchito abwino komanso kulumikizana kwapakati kumathandizira kuchepetsa kuwonongeka kwa zomangamanga, potero kuwongolera magwiridwe antchito azinthuzo.
6. Zitsanzo zogwiritsira ntchito
HPMC chimagwiritsidwa ntchito matope matope, pulasitala matope, self-leveling matope, zomatira matailosi ndi zinthu zina ntchito yomanga. Mwachitsanzo, kuwonjezera HPMC ku zomatira matailosi a ceramic kumatha kupititsa patsogolo mphamvu zomangira ndi nthawi yotsegulira yomanga; kuwonjezera HPMC ku pulasitala matope akhoza kuchepetsa magazi ndi kugwa, ndi kusintha pulasitala mphamvu ndi kukana ming'alu.
Hydroxypropyl methylcelluloseimatha kupititsa patsogolo magwiridwe antchito azinthu zopangidwa ndi simenti m'njira zambiri. Kusunga madzi ake, kukhuthala, kukana ming'alu ndi kulimba kwake kwathandizira kwambiri kapangidwe kake ndi magwiridwe antchito a zida za simenti. Izi sizimangothandiza kukonza ntchito yabwino, komanso zimachepetsanso ndalama zomanga ndi kukonza. M'tsogolomu, ndi chitukuko chaukadaulo wa zida zomangira, chiyembekezo chogwiritsa ntchito HPMC chidzakhala chokulirapo.
Nthawi yotumiza: Nov-21-2024