1. Iyini inhloso enkulu ye-hydroxypropyl methyl cellulose (HPMC)?
I-HPMC isetshenziswa kabanzi ezintweni zokwakha, ezinengilazi, izinsalela zokwenziwa, izitsha zobumba, imithi, ukudla, izindwangu, ezolimo, izimonyo, ugwayi nezinye izimboni. I-HPMC ingahlukaniswa ngebanga lokwakha, ibanga lokudla kanye nebanga lezokwelapha ngokwenhloso yalo. Njengamanje, imikhiqizo eminingi yasekhaya ingeyezinga lokwakha. Ebangeni lokwakha, i-putty powder isetshenziswa ngenani elikhulu, cishe i-90% isetshenziselwa i-putty powder, kanti enye isetshenziselwa udaka lukasimende neglue.
2. Kunezinhlobo ezimbalwa ze-hydroxypropyl methyl cellulose (HPMC). Uyini umehluko phakathi kokusetshenziswa kwazo?
I-HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo oluncibilikayo olushisayo. Imikhiqizo yohlobo olusheshayo ihlakazeka ngokushesha emanzini abandayo futhi inyamalale emanzini. Ngalesi sikhathi, uketshezi alunayo i-viscosity, ngoba i-HPMC ihlakazeka emanzini ngaphandle kokuhlakazeka kwangempela. Cishe imizuzu emi-2, i-viscosity yoketshezi yanda kancane kancane, yakha i-viscous colloid esobala. Umkhiqizo oncibilikayo oshisayo, lapho uhlangana namanzi abandayo, ungahlakazeka ngokushesha emanzini ashisayo futhi unyamalale emanzini ashisayo. Lapho izinga lokushisa lehla lifinyelela ezingeni elithile lokushisa, i-viscosity ibonakala kancane kuze kube yilapho kwakheka i-viscous colloid esobala. Uhlobo lwe-hot-melt lungasetshenziswa kuphela ku-putty powder nodaka. Ku-glue ewuketshezi nopende, i-clumping iyenzeka futhi ayikwazi ukusetshenziswa. Uhlobo olusheshayo lunohlu olubanzi lwezinhlelo zokusebenza. Ingasetshenziswa ku-putty powder nodaka, kanye neglue ewuketshezi nopende. Akukho contraindication.
3. Yiziphi izindlela zokuchithwa kwe-hydroxypropyl methylcellulose HPMC?
Indlela yokuchithwa kwamanzi ashisayo: Njengoba i-HPMC ingancibiliki emanzini ashisayo, i-HPMC ingahlakazwa ngokufanayo emanzini ashisayo esigabeni sokuqala, bese incibilika ngokushesha ngesikhathi sokupholisa. Izindlela ezimbili ezijwayelekile zichazwa kanje:
1). Faka i-1/3 noma 2/3 yenani elidingekayo lamanzi esitsheni bese usishisa ku-70°C. hlakaza i-HPMC ukulungiselela udaka lwamanzi ashisayo; bese ufaka inani elisele lamanzi abandayo emanzini ashisayo Ku-slurry, pholisa ingxube ngemva kokugqugquzela.
Indlela yokuxuba impushana: hlanganisa i-HPMC powder nenani elikhulu lezinye izinto eziyimpuphu, xuba kahle nge-blender, bese wengeza amanzi ukuze uhlakaze, bese i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlanganisa nokuhlanganisa, ngoba ikhona ngalinye elincane, kukhona okuncane kuphela. ye-HPMC Impushana izoncibilika ngokushesha lapho ihlangana namanzi. -Abakhiqizi be-putty powder kanye nodaka basebenzisa le ndlela. [I-Hydroxypropyl methyl cellulose (HPMC) isetshenziswa njenge-ejenti ejiya futhi egcina amanzi ku-putty powder mortar.
Faka inani elidingekayo lamanzi ashisayo esitsheni bese ushisa kuze kufike ku-70°C. Kancane kancane engeza i-hydroxypropyl methylcellulose ngokunyakazisa kancane, qala i-HPMC intante phezu kwamanzi, bese kancane kancane wenze udaka, bese upholisa udaka ngokunyakazisa.
Isikhathi sokuthumela: Nov-16-2021