Putty bụ ihe dị mkpa e ji arụ ụlọ nke ọma, ọ na-emetụtakwa nrapado agba na ịdị mma nke ihe owuwu ya. N'ime nhazi nke putty, ihe mgbakwunye cellulose ether na-arụ ọrụ dị mkpa.Hydroxypropyl Methylcellulose (HPMC), dịka otu n'ime ihe ndị a na-ejikarị eme ihe na cellulose ethers, nwere ike ime ka viscosity, arụmọrụ owuwu na nchekwa nke putty dịkwuo mma nke ọma.
1. Njirimara ndị bụ isi nke Hydroxypropyl Methylcellulose
HPMC bụ polima na-agbaze na mmiri nke na-abụghị ionic, nke nwere ezigbo ọkpụrụkpụ, njigide mmiri, mgbasa, emulsification na ihe ndị na-emepụta ihe nkiri. Ọkwa nnọchi, ogo nke polymerization na ọnọdụ mgbaze na-emetụta viscosity ya. Mmiri AnxinCel®HPMC na-egosipụta njirimara nke mmiri pseudoplastic, ya bụ, mgbe ọnụego shear na-abawanye, viscosity nke ngwọta ahụ na-ebelata, nke dị oke mkpa maka owuwu nke putty.
2. Mmetụta nke HPMC na viscosity putty
2.1 Mmetụta ọkpụrụkpụ
HPMC na-emepụta mmiri dị oke mmiri ọkụ mgbe ọ gbazere n'ime mmiri. Mmetụta ya na-egosipụtakarị n'akụkụ ndị a:
Imeziwanye thixotropy nke putty: HPMC nwere ike idobe putty ahụ na oke viscosity mgbe ọ na-adịghị arụ ọrụ iji zere ịda ada, ma belata viscosity mgbe a na-akpụcha ma na-eme ka arụmọrụ owuwu dịkwuo mma.
Ime ka putty rụọ ọrụ nke ọma: Ọ bụrụ na e jiri HPMC mee ihe nke ọma, ọ ga-eme ka putty na-amị amị, mee ka ọ dị nro ma belata ihe mgbochi owuwu.
Mmetụta ike ikpeazụ nke putty: Mmetụta siri ike nke HPMC na-eme ka ihe e ji emeju ihe na ihe simenti dị na putty gbasaa nke ọma, na-ezere nkewa ma na-eme ka arụmọrụ siri ike ka mma mgbe e wuchara ya.
2.2 Mmetụta na usoro mmiri mmiri
HPMC nwere ezigbo ihe eji echekwa mmiri, nke nwere ike ibelata mmiri ngwa ngwa na-esi n'ime akwa putty, si otú a na-eme ka oge mmiri nke putty dabere na simenti dịkwuo ogologo ma na-eme ka ike na mgbochi mgbawa nke putty dịkwuo mma. Agbanyeghị, oke viscosity nke HPMC ga-emetụta ikuku na-erugharị na ọsọ nkụ nke putty, na-ebute mbelata arụmọrụ owuwu. Ya mere, ọnụọgụ HPMC kwesịrị iji hụ na ọrụ ya dị mfe ma na-ezere mmetụta ọjọọ na oge siri ike.
2.3 Mmekọrịta dị n'etiti ibu molekul nke HPMC na viscosity nke putty
Ka ibu HPMC dị elu karịa, otú ahụ ka mmiri mmiri ya si jupụta. Na putty, ojiji nke HPMC dị elu (dịka ụdị nwere viscosity karịrị 100,000 mPa·s) nwere ike ime ka njigide mmiri na ihe mgbochi ịcha mmiri nke putty dịkwuo mma nke ukwuu, mana ọ nwekwara ike ibute mbelata na ike ịrụ ọrụ. Ya mere, n'okpuru ihe owuwu dị iche iche, a ga-ahọrọ HPMC nwere viscosity kwesịrị ekwesị iji kwado njigide mmiri, ike ịrụ ọrụ na arụmọrụ ikpeazụ.
2.4 Mmetụta nke usoro HPMC na viscosity putty
Ọnụọgụ AnxinCel®HPMC agbakwunyere na-enwe mmetụta dị ukwuu na viscosity nke putty, ọ na-abụkarị n'etiti 0.1% na 0.5%. Mgbe usoro HPMC dị obere, mmetụta siri ike na putty na-ebelata, ọ nwekwara ike ọ gaghị enwe ike imeziwanye ọrụ na idobe mmiri nke ọma. Mgbe usoro ahụ dị oke elu, viscosity nke putty buru ibu, iguzogide ihe owuwu na-abawanye, ọ nwekwara ike imetụta ọsọ nkụ nke putty. Ya mere, ọ dị mkpa ịhọrọ ọnụọgụ HPMC kwesịrị ekwesị dịka usoro nke putty na gburugburu ebe obibi owuwu si dị.
Hydroxypropyl methylcellulose na-arụ ọrụ n'ịkpa oke, idobe mmiri na ime ka putty dịkwuo mma. Ibu molekul, ogo nnọchi na ego mgbakwunye nke ihe ndị dị na yaHPMCga-emetụta oke mmiri nke putty. Oke HPMC kwesịrị ekwesị nwere ike ime ka ike ọrụ na iguzogide mmiri nke putty dịkwuo mma, ebe mgbakwunye gabigara ókè nwere ike ime ka ihe siri ike nke owuwu dịkwuo elu. Ya mere, n'itinye putty n'ọrụ n'ezie, a ga-atụle njirimara viscosity na ihe achọrọ maka owuwu nke HPMC nke ọma, a ga-agbanwekwa usoro ahụ nke ọma iji nweta arụmọrụ kachasị mma na ịdị mma ikpeazụ.
Oge ozi: Feb-10-2025