Ndị China nke HPMC bụ hydropyylthyl methylcellose. Ọ bụ na-abụghị nke ionic ma na-ejikarị ebe a na-edebe mmiri na-echekwa. Ọ bụ ihe eji eme mmiri na-ejigide na ngwa agha. Ngwaahịa nke polysicride na-emepụta site na alkalization na akwara. Ọ nweghị ụgwọ onwe ya, anaghị emeghachi omume ndị ahụ ebubo na ihe ndị na-eme achịcha, ma nwee arụmọrụ kwụsiri ike. Ọnụahịa ahụ dịkwa ala karịa ụdị ndị ọzọ nke ethers, yabụ, a na-eji ya ebe niile.
Ọrụ nke hydroxypylthylthylcelllose: ọ nwere ike ịme ka mmiri ahụ gwakọtara agwakọta nke ọma iji nwee ụdị vitcosity na igbochi oge. (Mmiri) bụ njirimara kachasị mkpa, nke na-enyere aka idobe ego nke mmiri na-akwụghị ụgwọ na ngwa agha, nke a na-arụ ọrụ nwere oge ka ukwuu na hydrate. (Njikọ mmiri) Ọ nwere ihe ndị na-abanye na-abanye na ikuku, nke nwere ike iwebata edo edo na ezigbo ikuku na-eme ka ọ dịkwuo mma.
The dị elu viscosity nke hydroxypropyythyl methylcellose eather, ka mma ịrụ ọrụ njigide mmiri. Maka otu ngwaahịa ahụ, nsonaazụ vissityzọ vis dị iche iche dị iche iche, ụfọdụ nwere ndị nweburu ma ọlị. Ya mere, mgbe a tụnyere viscosity, a ga-eme ya n'etiti otu ule ahụ, gụnyere okpomọkụ, rotor, wdg.
Banyere urughuru ogo, nke kachasị mma, mma njigide mmiri. Mgbe nnukwu mkpụrụ osisi cellulose nke cellulose etler batara na mmiri, elu na-agbaze ozugbo ma na-akpụzi gel iji gbochie moducus mmiri site na ịnọgide na-aga n'ihu na infilt. Mgbe ụfọdụ, ọ na-enweghị ike ịgbasa ma gbasaa ma belata ogologo oge, na-akpụzi ihe ngwọta igwe ojii ma ọ bụ agglomeration. Ọ na-emetụta oke njigide mmiri nke cellulose eathe, na onye na-eso ụzọ bụ otu n'ime ihe maka ịhọrọ ether. Nmapụta bụkwa ihe dị mkpa arụmọrụ arụmọrụ nke methyl cellulose ether. A chọrọ MC eji maka ngwa agha akọrọ ka ọ bụrụ ntụ ntụ, na obere mmiri ọdịnaya, na suple na-achọ 20% -60% nke urughuru na-erughị 63UM. Ifuru ahụ na-emetụta ngbasa nke hydropyythylthyl. Nke a na -adịsi ike mc na-abụkarị n 'mmiri na-enweghị agglomeration, mana ọnụ ọgụgụ na-adịghị ada ada, yabụ na ọ dịghị mma maka iji ntụ ntụ ntụ. Na akọrọ ntụ ntụ, Mc na-agbasa n'etiti ihe ciment dị ka nchịkọta, mma ntụ ntụ zuru oke nwere ike zere methy cellulose mgbe agwakọta ya na mmiri.
N'ikwu na-ekwu, viscosity dị elu, ka mma idogide mmiri. Agbanyeghị, viscosity na elu molecular arọ nke MC, onye kwekọrọ na ya ga-enwe mmetụta na-adịghị mma na ike na owuwu nke ngwa agha. The dị elu viscosity, na-apụtawanye ìhè na nsonaazụ na-arụpụta na ngwa agha, mana ọ bụghị ozugbo. Na viscosity dị elu, ndị na-ahụ mmiri mmiri ga-adị, nke ahụ bụ, n'oge owuwu, ọ na-egosiputa ya ka ịrapara na mpe mpe mpe na mkpụrụ. Mana ọ baghị uru iwelie ike mgbochi mmiri nke mmiri ahụ n'onwe ya. Nke ahụ bụ, n'oge a na-ewu ihe, arụmọrụ mgbochi Sag apụtaghị. Kama nke ahụ, ụfọdụ ndị na-ajụ oyi ma dị ala ma na-agbanwe usoro Methyl Cellulose nwere arụmọrụ dị mma iji melite ike mgbanyụ mmiri.
Njikọ mmiri nke HPMC na-emetụtakwa ọnọdụ okpomọkụ eji, na njigide mmiri nke methy cellulose ether na-agbadata na mmụba nke okpomọkụ. Agbanyeghị, na ngwa eji eme ihe, a na-etinye ngwa agha ntụ ntụ mmiri na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ (dị elu karịa ogo 40) na-ekenye ya na-achasi ike na oge ọkọchị, nke na-eme ngwa ngwa ciment na Harnening nke okpukpu kporo nku. Ndapụ nke ọnụego mmiri nke ọnụego doro anya na-eduga na mmetụta doro anya na mgbakwunye ma na-emetụta nrụgide na-adịwanye njọ belata mmetụta nke ọnọdụ okpomọkụ n'okpuru ọnọdụ a. Na nke a, a na-ahụta ihe ndị e meperethythythyythythytholutive na-eme ka ọ dị na mbube nke mmepe teknụzụ. Ọ bụ ezie na ego Methylyythyythythythythyth Cellulose na-amụba (usoro ọkọchị), ọrụ na ndagide na-eguzogide enweghị ike ijigide mkpa nke iji. Site na ụfọdụ ọgwụgwọ pụrụ iche na MC, dị ka ịbawanye ogo ogo, wdg, enwere ike ịnọgide na-emegide njigide mmiri na elu okpomọkụ, ka ọ nwee ike ịnye arụmọrụ ka mma n'okpuru ọnọdụ ike.
N'ozuzu, HPMC nwere ọnọdụ gel, nke enwere ike kewaa n'ụzọ 60, ụdị 65, na ụdị 75. Maka ụlọ ọrụ na-eji ájá osimiri maka ngwa agha nkịtị, ọ kachasị mma iji 75-ụdị HPMC nwere okpomọkụ gel. Usoro nke Hpmc ekwesịghị ịdị oke elu, ma ọ ga-eme ka mmiri ahụ sie ike nke ngwa agha, ọ ga-arapara n'ahụ trow, na oge nhọd ga-adị ogologo, nke ga-emetụta ike. Ngwaahịa ngwa ahịa dị iche iche eji hpmc na viscosities dị iche iche, ma anaghị eji HPMC dị elu. Ya mere, ọ bụ ezie na ngwaahịa na-eme mmiri na-emepụta ihe dị mma, a na-akpali ha mgbe a na-eji ya eme ihe. Chohọrọ HPMC aka nri bụ ọrụ bụ isi nke ndị ọrụ ụlọ ọrụ.
Oge post: Apr-12-2023