Zotsatira za HPMC pa magwiridwe antchito a matope odziyimira pawokha

Mtondo wodziyimira pawokha ungadalire kulemera kwake kuti upange maziko athyathyathya, osalala komanso olimba pa substrate kuti uike kapena kulumikiza zipangizo zina. Nthawi yomweyo, ukhoza kugwira ntchito yomanga yayikulu komanso yothandiza. Chifukwa chake, kusinthasintha kwakukulu ndi gawo lofunika kwambiri pa mtondo wodziyimira pawokha. Kuphatikiza apo, uyenera kukhala ndi mphamvu yosungira madzi ndi mgwirizano, osalekanitsa madzi, komanso ukhale ndi mawonekedwe oteteza kutentha komanso kutentha pang'ono.

Kawirikawiri, matope odziyimira pawokha amafunika kusinthasintha kwabwino, koma kusinthasintha kwa phala la simenti yeniyeni nthawi zambiri kumakhala 10-12cm yokha; pakati paethers a cellulose, hydroxypropyl methylcellulose (HPMC) ndi chowonjezera chachikulu cha matope osakaniza kale, ngakhale kuti kuchuluka kwa zowonjezerako kuli kochepa kwambiri, kumatha kusintha kwambiri magwiridwe antchito a matope, kumatha kusintha kusinthasintha, magwiridwe antchito, magwiridwe antchito ogwirizana komanso magwiridwe antchito osungira madzi a matope. Imagwira ntchito yofunika kwambiri pa ntchito ya matope osakaniza kale.

1. Kuyenda

Hydroxypropyl methylcellulose (HPMC)Zimakhudza kwambiri kusunga madzi, kusinthasintha, ndi magwiridwe antchito a matope odziyimira pawokha. Makamaka ngati matope odziyimira pawokha, kusinthasintha ndi chimodzi mwa zizindikiro zazikulu zowunikira magwiridwe antchito a matope odziyimira pawokha. Poganizira za kutsimikizira kapangidwe kabwino ka matope, kusinthasintha kwa matope kumatha kusinthidwa posintha kuchuluka kwa HPMC. Komabe, ngati mlingo uli wokwera kwambiri, kusinthasintha kwa matope kudzachepetsedwa, kotero mlingo wa HPMC uyenera kulamulidwa mkati mwa malire oyenera.

2. Kusunga madzi

Kusunga madzi mu matope ndi chizindikiro chofunikira poyesa kukhazikika kwa zigawo zamkati za matope atsopano osakanikirana a simenti. Kuti achite bwino momwe zinthu za gel zimagwirira ntchito, kuchuluka kwa HPMC kumatha kusunga chinyezi mu matope kwa nthawi yayitali. Kawirikawiri, kuchuluka kwa madzi mu matope kumawonjezeka ndi kuchuluka kwa HPMC. Ntchito yosunga madzi ya HPMC imatha kuletsa substrate kuti isayamwitse madzi ambiri mwachangu, ndikulepheretsa madzi kutuluka, kuti zitsimikizire kuti malo osungira madzi amapereka madzi okwanira kuti simenti iume. Kuphatikiza apo, kukhuthala kwa hydroxypropyl methylcellulose kumakhudzanso kwambiri kusunga madzi mu matope. Kukhuthala kwakukulu, kumakhala bwino kusunga madzi. Kawirikawiri, zinthu zokhala ndi kukhuthala kwa pafupifupi 400mpa.s zimagwiritsidwa ntchito kwambiri pokonza matope okha, zomwe zingathandize kuti matope azigwira ntchito bwino ndikuwonjezera kukhuthala kwa matope.

3. Kukhazikitsa nthawi

HPMC imakhala ndi mphamvu yochedwetsa pang'ono pa matope. Pamene mlingo ukuwonjezeka, nthawi yokhazikika ya matope imatalikitsidwa. Mphamvu yochedwetsa ya HPMC pa phala la simenti imadalira kwambiri kuchuluka kwa magulu a alkyl omwe amasinthidwa, ndipo ilibe ubale wokwanira ndi kulemera kwake kwa mamolekyu. Mlingo wocheperako wa kusintha kwa alkyl, kuchuluka kwa hydroxyl kumakhala kwakukulu, ndipo mphamvu yochedwetsa imawonekera kwambiri. Ndipo kuchuluka kwa HPMC kukakhala kwakukulu, mphamvu ya filimu yovuta imaonekera kwambiri pakuchepa kwa madzi koyambirira kwa simenti, kotero mphamvu yochedwetsa imawonekeranso kwambiri.

4. Mphamvu yopindika komanso mphamvu yopondereza

Kawirikawiri, mphamvu ndi chimodzi mwa zizindikiro zofunika kwambiri zowunikira momwe zinthu zopangidwa ndi simenti zimakhalira zouma pa chisakanizocho. Mphamvu yokakamiza ndi mphamvu yopindika ya matope zimachepa ndi kuchuluka kwa HPMC.

5. Mphamvu ya mgwirizano

HPMC ili ndi mphamvu yaikulu pa ntchito yolumikizana ya matope.HPMCImapanga filimu ya polima yokhala ndi mphamvu yotseka pakati pa dongosolo la madzi ndi tinthu ta simenti, zomwe zimapangitsa kuti madzi ambiri mu filimu ya polima kunja kwa tinthu ta simenti, zomwe zimathandiza kuti simenti ikhale ndi madzi okwanira, motero zimapangitsa kuti slurry ikhale yabwino. Mphamvu yolimba ya bond. Nthawi yomweyo, kuwonjezera HPMC yokwanira kumawonjezera pulasitiki ndi kusinthasintha kwa matope, kumachepetsa kuuma kwa malo osinthira pakati pa matope ndi mawonekedwe a substrate, ndikuchepetsa kuthekera kotsetsereka pakati pa malo olumikizirana. Pamlingo wina, mphamvu yolumikizirana pakati pa matope ndi substrate imakulitsidwa. Kuphatikiza apo, chifukwa cha kukhalapo kwa HPMC mu simenti, malo apadera osinthira mawonekedwe ndi mawonekedwe amapangidwa pakati pa tinthu ta simenti ndi chinthu chosinthira. Malo olumikizirana awa amapangitsa kuti malo osinthira mawonekedwe akhale osinthasintha komanso osalimba. Chifukwa chake, Mortar ili ndi mphamvu yolimba yolumikizirana.