Putty chinhu chakakosha chekuvaka chinoshandiswa kumisa madziro, uye kuita kwayo kunokanganisa zvakananga kunamatira kwepende uye kunaka kwekuvaka. Mukugadzira putty, cellulose ether additives inoita basa rakakosha.Hydroxypropyl Methylcellulose (HPMC), seimwe yeinonyanya kushandiswa cellulose ethers, inogona kunyatso kuvandudza viscosity, kuita kwekuvaka uye kuchengetedza kugadzikana kweputty.
1. Zvinhu zvinokosha zveHydroxypropyl Methylcellulose
HPMC isiri-ionic mvura-inonyungudika polima ine yakanaka thickening, kuchengetedza mvura, kupararira, emulsification uye firimu-kuumba zvinhu. Viscosity yaro inobatwa nehuwandu hwekutsiva, dhigirii repolymerization uye solubility mamiriro. Iyo aqueous solution yeAnxinCel®HPMC inoratidza hunhu hwepseudoplastic fluid, kureva, kana shear rate ichiwedzera, viscosity yemushonga inoderera, izvo zvakakosha pakuvaka putty.
2. Mhedzisiro yeHPMC pane putty viscosity
2.1 Kukora mhedzisiro
HPMC inoumba yakakwira viscosity mhinduro mushure mekunyungudika mumvura. Iko kukora kwayo kunoratidzwa zvakanyanya mune zvinotevera zvinhu:
Kuvandudza iyo thixotropy ye putty: HPMC inogona kuchengeta iyo putty payakanyanya viscosity kana yakamira kudzivirira kudonha, uye kuderedza viscosity kana kukwenya nekuvandudza kuita kwekuvaka.
Kuvandudza kushanda kweputty: Huwandu hwakakodzera hweHPMC hunogona kuvandudza lubricity ye putty, zvichiita kuti kukwenya kuve nyore uye kuderedza kuvaka kuramba.
Kukanganisa simba rekupedzisira reputty: Iko kukora mhedzisiro yeHPMC inoita iyo yekuzadza uye simende zvinhu mu putty zvakaenzana zvakapararira, kudzivirira kupatsanurwa uye kugadzirisa kuoma kwekuita mushure mekuvaka.
2.2 Mhedzisiro pane iyo hydration process
HPMC ine yakanakisa yekuchengetedza mvura zvivakwa, izvo zvinogona kuderedza kukurumidza kubuda kwemvura mune putty layer, nekudaro kuwedzera nguva ye hydration ye simenti-based putty uye kuvandudza simba uye kutsemuka kuramba kweputty. Nekudaro, yakawandisa viscosity yeHPMC inokanganisa kupenya kwemhepo uye nekuoma kwekumhanya kweputty, zvichikonzera kudzikiswa kwekuvaka. Naizvozvo, huwandu hweHPMC hunoda kuve nechokwadi chekushanda uku uchidzivirira mhedzisiro panguva yekuoma.
2.3 Hukama pakati pehuremu hwemamorekuru eHPMC uye viscosity ye putty
Iyo yakakwirira iyo molecular huremu hweHPMC, iyo yakakura viscosity yeaqueous solution. Mune putty, kushandiswa kwepamusoro-viscosity HPMC (yakadai semhando ine viscosity yakakura kupfuura 100,000 mPa · s) inogona kuvandudza zvakanyanya kuchengetedza kwemvura uye anti-sagging zvimiro zveputty, asi zvinogona zvakare kutungamira mukuderera kwekushanda. Naizvozvo, pasi pezvinodiwa zvekuvaka zvakasiyana, HPMC ine viscosity yakakodzera inofanira kusarudzwa kuenzanisa kuchengetwa kwemvura, kushanda uye kuita kwekupedzisira.
2.4 Mhedzisiro yeHPMC dosage pane putty viscosity
Huwandu hweAnxinCel®HPMC hwakawedzerwa hune hunhu hunokosha pane viscosity ye putty, uye muyero unowanzo pakati pe0.1% ne0.5%. Kana iyo dosage yeHPMC yakadzikira, iyo thickening mhedzisiro pane putty ishoma, uye inogona kusakwanisa kunyatso kuvandudza kushanda uye kuchengetedza mvura. Kana iyo dosi yakawandisa, iyo viscosity yeputty yakakura kwazvo, kuramba kwekuvaka kunowedzera, uye zvinogona kukanganisa kuomesa kweputty. Naizvozvo, zvinodikanwa kuti usarudze huwandu hwakakodzera hweHPMC zvinoenderana nefomula yeputty uye nharaunda yekuvaka.
Hydroxypropyl methylcellulose inoita basa mukukora, kuchengetedza mvura uye kuvandudza kushanda mu putty. Iyo molecular huremu, dhigirii rekutsiva uye kuwedzera huwandu hweHPMCzvichakanganisa viscosity ye putty. Huwandu hwakakodzera hweHPMC hunogona kuvandudza kushanda uye kuramba kwemvura kweputty, nepo kuwedzera kwakanyanya kunogona kuwedzera kuoma kwekuvaka. Naizvozvo, mukushandiswa chaiko kweputty, iyo viscosity hunhu uye zvinodiwa zvekuvaka zveHPMC zvinofanirwa kutariswa zvakazara, uye fomula yacho inofanirwa kugadziridzwa zvine mutsindo kuti iwane yakanyanya kunaka kuita kwekuvaka uye yekupedzisira mhando.
Nguva yekutumira: Feb-10-2025