Putty bụ ihe dị mkpa ụlọ ihe eji eme ihe maka mgbidi mgbidi, na arụmọrụ ya na-emetụta kpọmkwem nchikota nke agba na àgwà ihe owuwu. Na nhazi nke putty, ihe mgbakwunye cellulose ether na-arụ ọrụ dị mkpa.Hydroxypropyl Methylcellulose (HPMC), dị ka otu n'ime cellulose ethers nke a na-ejikarị eme ihe, nwere ike imeziwanye viscosity, ịrụ ọrụ ihe owuwu na nkwụnye nchekwa nke putty.
1. Njirimara ndị bụ isi nke Hydroxypropyl Methylcellulose
HPMC bụ ihe na-abụghị ionic mmiri-soluble polima na ezi ndim, mmiri njide, dispersion, emulsification na film-akpụ Njirimara. A na-emetụta viscosity ya site na ogo nke nnọchi, ogo polymerization na ọnọdụ solubility. Ngwọta mmiri nke AnxinCel®HPMC na-egosipụta njirimara nke mmiri mmiri pseudoplastic, ya bụ, mgbe ọnụ ọgụgụ shear na-abawanye, viscosity nke ngwọta na-ebelata, nke dị oké mkpa na-ewu nke putty.
2. Mmetụta nke HPMC na putty viscosity
2.1 Mmetụta dị arọ
HPMC Nleta a elu viscosity ngwọta mgbe dissolving na mmiri. A na-egosipụta mmetụta ya na-ebuwanye ibu na akụkụ ndị a:
Ịkwalite thixotropy nke putty: HPMC nwere ike idobe putty na viscosity dị elu mgbe ọ na-eguzo ka ọ ghara ịla n'iyi, ma belata viscosity mgbe ị na-ehichapụ ma na-emeziwanye arụmọrụ ụlọ.
Ịkwalite ịrụ ọrụ nke putty: Ọnụ ego HPMC kwesịrị ekwesị nwere ike ime ka mmanu nke putty dịkwuo mma, na-eme ka nsị dị nro ma na-ebelata nkwụsị ụlọ.
Na-emetụta ike ikpeazụ nke putty: Mmetụta siri ike nke HPMC na-eme ka ihe na-emepụta ihe na cementitious dị na putty na-agbasasị, na-ezere nkewa na imeziwanye arụmọrụ ike mgbe e wuchara ya.
2.2 Mmetụta na usoro hydration
HPMC nwere ezigbo njigide mmiri, nke nwere ike ibelata ngwa ngwa evaporation nke mmiri na putty oyi akwa, si otú ịgbatị oge hydration nke ciment dabeere putty na imeziwanye ike na mgbape mgbochi nke putty. Otú ọ dị, oke viscosity nke HPMC ga-emetụta ikuku permeability na ihicha ọsọ nke putty, na-akpata mbelata ihe owuwu arụmọrụ. Ya mere, ego nke HPMC kwesịrị iji hụ na workability na-ezere ọjọọ mmetụta na hardening oge.
2.3 Mmekọrịta dị n'etiti ịdị arọ molekụla nke HPMC na viscosity nke putty
Ihe dị elu nke ịdị arọ molekụla nke HPMC, ka viscosity nke ngwọta ya dị ukwuu. Na putty, iji HPMC nwere viscosity dị elu (dị ka ụdị nke nwere viscosity karịrị 100,000 mPa·s) nwere ike ime ka njide mmiri na ihe mgbochi na-adịghị mma nke putty dịkwuo mma, mana ọ nwekwara ike iduga mbelata ọrụ. Ya mere, n'okpuru ihe owuwu dị iche iche, HPMC nwere viscosity kwesịrị ekwesị kwesịrị ịhọrọ iji dozie njide mmiri, ịrụ ọrụ na arụmọrụ ikpeazụ.
2.4 Mmetụta nke usoro onunu ogwu HPMC na viscosity putty
Ọnụ ego AnxinCel®HPMC agbakwunyere nwere mmetụta dị ukwuu na viscosity nke putty, na usoro onunu ogwu na-adịkarị n'etiti 0.1% na 0.5%. Mgbe usoro onunu ogwu nke HPMC dị ala, mmetụta na-eme ka ọ dị na putty dị oke, ma ọ nwere ike ọ gaghị enwe ike imeziwanye ọrụ na njide mmiri nke ọma. Mgbe usoro onunu ogwu dị oke elu, viscosity nke putty buru ibu, nguzogide ihe owuwu na-abawanye, ọ nwere ike imetụta ngwa ngwa ihicha nke putty. Ya mere, ọ dị mkpa ịhọrọ ego kwesịrị ekwesị nke HPMC dịka usoro nke putty na gburugburu ebe obibi.
Hydroxypropyl methylcellulose na-ekere òkè n'ịba ụba, njide mmiri na imeziwanye arụmọrụ na putty. The molekụla arọ, ogo nke nnọchi na mgbakwunye ego nkeHPMCga-emetụta viscosity nke putty. Ọnụ ego HPMC kwesịrị ekwesị nwere ike imeziwanye arụmọrụ na nguzogide mmiri nke putty, ebe mgbakwunye oke nwere ike ịbawanye ihe isi ike nke ihe owuwu. Ya mere, na ngwa nke putty n'ezie, ekwesịrị ịtụle njirimara viscosity na ihe owuwu nke HPMC, yana usoro a ga-edozi nke ọma iji nweta arụmọrụ ihe owuwu kacha mma na ogo ikpeazụ.
Oge nzipu: Feb-10-2025