Hydroxypylththththththylcelllose (hpmc)Bụ polymer na-agbanye mmiri na-ejikarị ya arụ ọrụ, ọgwụ, nri na kemịkal na kemịkal. Ọ bụ ngbanwe mkpụrụ osisi na-abụghị nke a na-enweta site na ikuku igodo nke cellulose, ya na ezigbo truning, emulsification, mmachi na ihe ndị na-akpụ akpụ ihe nkiri. Agbanyeghị, n'okpuru ọnọdụ okpomọkụ dị elu, Hpmc ga-emebi emebi ikuku, nke nwere mmetụta dị mkpa na nkwụsi ike na ngwa dị mma.
Usoro ikuku nke hpmc
Mmebi nke HPMC tumadi gụnyere mgbanwe anụ ahụ na mgbanwe kemịkalụ. A na - egosipụta mgbanwe anụ ahụ dị ka mmiri mmiri, mgbanwe nke iko, mgbe mgbanwe kemịkalụ gụnyere mbibi nke molagelar, ndị otu ọrụ na - arụ ọrụ na usoro carbonatization.
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N'okpuru ọnọdụ okpomọkụ dị ala (gburugburu 100 Celsius C), HPMC tumadi na-agagharị mmiri ikuku na mmiri. Ebe ọ bụ na Hpmc nwere ụfọdụ mmiri a pere mpe, mmiri a ga-eji nwayọọ nwayọọ kubie ume n'oge kpo oku, si otú a na-emetụta ihe ndị o kwuru. Na mgbakwunye, viscosity HPMC ga-agbadata na mmụba nke okpomọkụ. Mgbanwe ndị a dị na mbara a bụ mgbanwe na-agbanwe na akụrụngwa anụ ahụ, ebe ihe eji eme ihe na kemịkalụ na-agbanwe agbanwe.
Mgbe ọnọdụ okpomọkụ gara n'ihu na 150-200 Celsius C, Hpmc ga-amalite itinye mmeghachi omume kemịkalụ nke ọma. A na-egosipụtakarị ya na mwepụ hydroxylyl na nke methoxy ọrụ, nke na-ebute mbelata na mgbanwe molecular. N'ọnọdụ a, HPMC nwere ike iwepụta obere ego na-agbanwe agbanwe, dịka methanol na propiolaldehyde.
2. Ọkara okpomọkụ nke ọkwa (200-300 Celsius C): Nnukwu mgbatị na obere molekule ọgbọ
Mgbe a na-abawanye okpomọkụ karịa 200-300 Celsius C, ọnụego mgbochi nke HPMC na-agba ngwa ngwa. Usoro mmebi iwu gụnyere:
A na-ejikọ eriri aka nke HPMC nke HPMC.
Mmeghachi omume na-emeghachi omume: Ngwunye shuga nke HPMC nwere ike ibute mmeghachi mmiri na oke okpomọkụ iji mepụta etiti na-enweghị atụ, nke a na-emekwa ka ngwaahịa na-agbanwe agbanwe.
Ntọhapụ nke obere molekil dị egwu: N'oge ọkwa a, HPMC wepụtara CE, HPO na obere molecule ihe, dị ka usoro usoro, dị ka acetaldehyde na acrolein.
Mgbanwe ndị a ga - eme ka oke mmiri nke Hpmc tụpụrụ nke ukwuu, vissese na ha, ihe a ga - amalitekwa ịgba odo odo.
3. Elu okpomọkụ dị elu (300-500 Celsius C): carbonazation na nkọ
Mgbe okpomoku juputara n'elu 300 Celsius C, HPMC na-abanye na ogbo nke ime ihe ike. N'oge a, a na - emekọ ihe ọzọ nke isi na - agbadata nke obere nwa agbọghọ na - eme ka mbibi nke ihe a na - eme ka ọ bụrụ mbibi ihe owuwu ahụ (ma mesịa nwee ebe a na - emegharị carbomance (Coke). Mmeghachi omume ndị a na-eme na ọkwa a:
Nrụrụ akpụ nke mkpụrụ osisi: na oke okpomọkụ, Hpmc na-aga n'ihu mmeghachi omume mixhidetion iji mepụta co₂ na cos, n'otu oge ahụ na-etolite carbomanceus.
Mmeghachi omume: A na-agbanwegharị nke polymer na ngwaahịa na-ezughị ezu, dị ka ojii carbon ma ọ bụ coke coke.
Ngwaahịa Vatatile: Nọgide na-edepụta Hydrocarbons ndị dị ka ethylene, proplene, na methane.
Mgbe a na-agba ọkụ na ikuku, Hpmc nwere ike ịgba ọkụ, ebe kpo oku na enweghị oxygen tumadi iche.
Ihe na-emetụta mmebi nke HPMC
Ihe nrụpụta nke HPMC na-emetụta ọtụtụ ihe, gụnyere:
Ihe owuwu kemịkalụ: ogo nke nbanye na Hydropyyl na Methoxy Otu na HPMC na-emetụta nkwụsi ike nke ya. N'ikwu okwu n'ozuzu, HPMC nwere ọdịnaya hydropoporpPyl nwere nkwụsi ike nke ukwuu.
Ahịhịa ambives: na ikuku, HPMC dị oke njọ, ebe a na-enweta ikuku ikuku (dịka Nitrogen), mmebi nke ya na-eji nwayọ nwayọ.
Ọnụ ego na-ekpo ọkụ: ngwa ngwa ga-eduga na ngwa ngwa ngwa ngwa, mgbe ị na-ekpo ọkụ nwere ike inyere HPMC aka iji nwayọ carboze ma belata mmepụta nke ngwaahịa ga-agbanwe agbanwe.
Ọdịnaya Mmiri: HPMC nwere ụfọdụ mmiri dị. N'oge usoro ọkụ, mkpo mmiri nke mmiri ga-emetụta ọnọdụ mgbanwe nke iko ya na usoro emebi.
Mmetụta dị mma nke nrụpụta nke hpmc
Njirimara nke HPMC bụ nke dị ezigbo mkpa na ngwa ọrụ ya. Ọmụmaatụ:
Industrylọ ọrụ owuwu: A na-eji HPMC na ngwa agha ciment na Gypsum ngwaahịa, na nkwụsi ike ya n'oge a ga-echebara arụmọrụ dị elu na arụmọrụ ahụ.
Industrylọ ọrụ ọgwụ: HPMC bụ onye na-ahụ maka ọgwụ na-achịkwa ya, a ga-ezere ndudue n'oge mmepụta dị elu iji hụ na nkwụsi ike nke ọgwụ.
Industrylọ ọrụ nri: HPMC bụ ihe mgbakwunye nri, yana njiri maramara nke ya na-ekpebi itinye ya na mmiri mmiri na nhazi dị elu.
Usoro nrụpụta ikuku nkeHpmcEnwere ike kee ya n'ime mmiri mmiri na mbido ala dị ala, isi agbụ na obere moletile voverilization na ọkara-okpomọkụ na ọnọdụ dị elu na ọnọdụ okpomọkụ. Ihe ndị dị ka usoro kemịkalụ nke ọma, amprent ikuku, na-ekpo ọkụ na mmiri mmiri. Ghọta usoro mmebi nke hpmc bara ezigbo uru iji bulie ngwa ya ma meziwanye ike ihe onwunwe.
Oge post: Mar-28-2025