1. Mwachidule ndi katundu wa HPMC
Hydroxypropyl Methylcellulose (HPMC)ndi non-ionic cellulose ether. Ili ndi mawonekedwe a kusungunuka kwamadzi, kukhuthala, kusunga madzi, kupanga mafilimu, kufalikira ndi kukhazikika poyambitsa magulu a hydroxypropyl ndi methyl mu cellulose cell cell. HPMC imagwiritsidwa ntchito kwambiri muzomangira zopangira simenti monga matope omangira, ufa wa putty, simenti yodziyimira pawokha komanso zomatira matailosi. Muzomangamanga zamakono, pofuna kupititsa patsogolo ntchito ya matope a simenti, HPMC, monga chowonjezera chothandizira, ikhoza kupititsa patsogolo ntchito yogwira ntchito komanso kulimba kwa zipangizo zopangira simenti.
2. Udindo wa HPMC mumatope a zomangira zopangira simenti
Makulidwe ndi kulimbikitsa zotsatira
Monga thickener ndi binder, HPMC akhoza kusintha kusasinthasintha, kugwirizana mphamvu ndi operability matope pomanga. Kupyolera mu kuyanjana ndi simenti ndi mchenga, HPMC imapanga dongosolo lokhazikika la maukonde atatu-dimensional, lomwe limapatsa matope mphamvu yogwirizana kwambiri, zomwe zimapangitsa kuti zikhale zovuta kutulutsa magazi ndikutulutsa magazi panthawi yomanga, ndikupanga zokutira wandiweyani pamwamba kuti zitsimikizire mphamvu ndi kulimba.
Limbikitsani kasungidwe ka madzi
Kusunga madzi ndi chimodzi mwazinthu zofunika kwambiri mumatope opangidwa ndi simenti, zomwe zimakhudza mwachindunji momwe simenti imayendera. HPMC akhoza kwambiri kusintha madzi posungira mphamvu matope. Njira yake yosungiramo madzi ndiyo kuchepetsa kusungunuka kwa madzi mwa kupanga filimu yamadzi othamanga kwambiri, kotero kuti madzi amagawidwa mofanana mumatope kuti asawonongeke mwamsanga. Mwanjira imeneyi, pamalo owuma kapena otentha kwambiri, HPMC imatha kuletsa matope kuti asaphwanyike ndikuwongolera ntchito yomanga komanso moyo wantchito wamatope.
Limbikitsani ntchito yomanga ndi anti-sagging
Mtondo wa simenti umakonda kugwa panthawi yomanga, zomwe zimakhudza ubwino ndi mphamvu ya polojekitiyi. Kuwonjezera HPMC angapereke matope kwambiri odana ndi sagging ntchito, kusintha thixotropy wa matope, ndi zovuta Wopanda pa chapakati zomangamanga. Nthawi yomweyo, HPMC imathanso kupanga matope kukhala ndi magwiridwe antchito abwino kwambiri komanso mafuta, kukulitsa kusalala kwa zomangamanga, kuchepetsa zovuta zomanga, komanso kukonza zomanga.
Wonjezerani kuchepa ndi kulimba kwa matope
Tondo lopangidwa ndi simenti limakonda kung'amba ming'alu ikayanika, zomwe zimapangitsa kuti zisalimba. HPMC bwino amachepetsa chiopsezo shrinkage akulimbana ndi kusintha mgwirizano ndi elasticity wa matope. Kuphatikiza apo, HPMC imatha kutalikitsa nthawi ya hydration reaction mumatope, kupanga simenti kuti ikhale yokwanira, potero imachepetsa kuchepa kwa matope ndikuwongolera kukana kwamatope.
3. Malo ogwiritsira ntchito HPMC
Wamba pulasitala matope
Mu matope wamba pulasitala, HPMC akhoza kusintha kugwirizana ntchito ndi kusunga madzi matope, kuonetsetsa kuti nyumba yomanga ndi yunifolomu ndi yosalala, ndi kuchepetsa zochitika ming'alu. The thixotropy wa HPMC akhoza kuonjezera kusinthasintha ntchito pa pulasitala, kuti matope akhoza kuchiritsidwa mwamsanga ndi kupangidwa pambuyo ntchito, ndi kukhala wabwino padziko tingati.
Zomatira matailosi
Mtengo wa HPMCamagwiritsidwa ntchito kwambiri pomatira matailosi, ndipo mphamvu yake yabwino yomangirira ndi zinthu zotsutsana ndi kutsetsereka zimatha kuthandizira kuyika matailosi. Panthawi imodzimodziyo, HPMC ikhoza kuonjezera ductility ndi kusunga madzi kwa zomatira matailosi, zomwe zimapangitsa kuti zomangamanga zikhale zokhazikika komanso zokhalitsa. Makamaka pakumanga matailosi akulu, HPMC imatha kuthandiza ogwira ntchito yomanga kuyika bwino ndikuwongolera.
Mtondo wodziyimira pawokha wa simenti
Tondo wodziyimira pawokha ndi chinthu chodzipangira chokha, chopangidwa mwachangu chomwe chimagwiritsidwa ntchito poyala pansi. HPMC imathandizira kukulitsa komanso kusunga madzi, kupangitsa kuti simenti yodziyimitsa ikhale yokhazikika. HPMC imathanso kupititsa patsogolo kuchuluka kwa madzi ndi dispersibility ya matope odziyimira pawokha, potero kupewa kuchitika kwa sedimentation.
Mtondo wosakanizika wowuma ndi ufa wa putty
Mumatope osakaniza owuma ndi ufa wa putty, HPMC imapangitsa kuti malo omangawo azikhala osasunthika komanso apamwamba kwambiri posungira madzi ndi kumamatira, ndikulepheretsa kuyanika ndi kusweka. Mu putty powder, HPMC sikuti imangopatsa mphamvu yotsekemera yosalala, komanso imatsimikizira kuti pamwamba pambuyo pomanga sikophweka kusweka, kupititsa patsogolo khalidwe lomaliza ndi moyo wautumiki.
4. Njira zodzitetezera pakugwiritsa ntchito HPMC mumatope opangira simenti
Kuwongolera mlingo
Kuchuluka kwa HPMC yowonjezeredwa kumakhudza kwambiri magwiridwe antchito a matope. Kuonjezera kwambiri kumapangitsa kuti matope akhale owundana kwambiri, ovuta kugwira ntchito, ndikupanga kuyera kapena kuchepa mphamvu pamtunda pambuyo poyanika. Choncho, kuchuluka kwa HPMC ayenera mosamalitsa ankalamulira pokonzekera matope. Kuwonjezedwa komwe kumalimbikitsidwa ndi 0.1% -0.3% ya kulemera kwa simenti.
Kugwirizana ndi zosakaniza zina
Muzinthu zopangira simenti, HPMC ikhoza kuyanjana ndi zowonjezera zina monga zochepetsera madzi, zopangira mpweya, ndi anti-cracking agents. Kugwirizana kwa HPMC ndi zosakaniza zina ziyenera kuganiziridwa popanga chilinganizocho, ndipo chilinganizocho chiyenera kukonzedwanso kudzera muzoyesera kuti zitsimikizire kuti zikuyenda bwino.
Njira yobalalitsira ndi kusungunula
HPMC ayenera wogawana omwazika pamene ntchito kupewa agglomeration kumakhudza ntchito ya matope. HPMC nthawi zambiri ikhoza kuwonjezeredwa panthawi yosakaniza kuti isungunuke mofanana m'madzi, kuti ipereke ntchito yake yonse.
Mtengo wa HPMC amagwiritsidwa ntchito kwambiri mumatope opangira simenti, ndipo amathandizira kwambiri kukulitsa kukhuthala, kusunga madzi ndikuletsa kung'ambika, ndikuwongolera ntchito yomanga. Ndi chitukuko chaukadaulo wa zida zomangira komanso kuchuluka kwa kufunikira kwa chitetezo cha chilengedwe komanso kusungitsa mphamvu, kugwiritsa ntchito HPMC kukukulirakulira komanso kuwongolera. Kupyolera muulamuliro wa sayansi wa njira yogwiritsira ntchito ndi mlingo wa HPMC, mphamvu yomanga ndi kulimba kwa zipangizo zopangira simenti zikhoza kusintha kwambiri, kupititsa patsogolo chitukuko ndi chitukuko cha zomangamanga.
Nthawi yotumiza: Nov-11-2024