otu.Ọdịiche dị n'etiti hydroxypropyl methylcellulose (HPMC) agbagoro na hydroxypropyl methylcellulose dị ọcha (HPMC)
1. Ọdịdị: Dị ọcha hydroxypropyl methylcellulose HPMC na-ele anya nke ọma ma nwee obere njupụta dị ala, sitere na 0.3-0.4g / ml;okenye hydroxypropyl methylcellulose HPMC nwere mma fluidity na-adị arọ , na e nwere nnukwu ọdịiche dị na ọdịdị si ezi ngwaahịa.
2. Ọnọdụ: Dị ọcha hydroxypropyl methylcellulose HPMC ntụ ntụ bụ fibrous n'okpuru a microscope ma ọ bụ nnukwu iko;mgbe okenye hydroxypropyl methylcellulose HPMC nwere ike ịhụ dị ka granular solids ma ọ bụ kristal n'okpuru a mikroskopu ma ọ bụ ebube iko.
3. Isi: Dị ọcha hydroxypropyl methylcellulose HPMC enweghị ike isi ísì nke amonia, starch na mmanya;okenye hydroxypropyl methylcellulose HPMC nwere ike na-esi isi ụdị ọ bụla, ọ bụrụgodị na ọ nweghị ụtọ, ọ ga-adị arọ.
4. Mmiri mmiri mmiri: hydroxypropyl methylcellulose HPMC dị ọcha ngwọta doro anya, nnyefe ọkụ dị elu, nkwụsị mmiri ≥ 97%;adulterated hydroxypropyl methylcellulose HPMC aqueous ngwọta bụ turbid, na mmiri njigide ọnụego siri ike iru 80%.
Nke abụọ, mmiri njigide nke hydroxypropyl methylcellulose HPMC, ịmata ọdịiche dị na uru na ọghọm:
Njide mmiri nke methyl cellulose ether n'okpuru ọnọdụ okpomọkụ dị elu bụ ihe dị mkpa na-egosi ọdịiche dị mma nke methyl cellulose ether.Ihe ndị dị ka okpomọkụ ikuku, okpomọkụ na ọsọ ọsọ ikuku ga-emetụta ọnụ ọgụgụ mmiri na-agbanwe agbanwe na ciment mortar na ngwaahịa gypsum.Ya mere, n'oge dị iche iche, e nwere ụfọdụ ọdịiche na mmetụta njide mmiri nke ngwaahịa na otu ego nke HPMC gbakwunyere.N'ime ihe owuwu a kapịrị ọnụ, enwere ike gbanwee mmetụta njide mmiri nke slurry site na ịba ụba ma ọ bụ ibelata ego nke HPMC agbakwunyere.Ngwaahịa HPMC dị mma nke hydroxypropyl methylcellulose nwere ike dozie nsogbu nke njide mmiri n'okpuru oke okpomọkụ.
Enwere ike ịgbasa methylcellulose dị elu nke ọma na ngwa ngwa ciment na ngwaahịa gypsum, wee kechie ihe niile siri ike, wee mepụta ihe nkiri wetting, mmiri dị na ntọala ahụ ji nwayọọ nwayọọ hapụ ogologo oge, na inorganic The hydration reaction. nke gelled ihe na-eme ka ike nkekọ na ike mkpakọ nke ihe.High-edu hydroxypropyl methylcellulose HPMC, ya uniformity dị nnọọ mma, ya methoxy na hydroxypropoxy otu na-kesara evenly tinyere cellulose molekul yinye, ọ nwere ike dịkwuo oxygen na hydroxyl na ether agbụ Ike nke atọm na-akpakọrịta na mmiri na-etolite hydrogen agbụ. na-atụgharị mmiri n'efu ka ọ bụrụ mmiri a kpara akpa, si otú a na-achịkwa ikuku mmiri nke ọma nke ihu igwe dị elu na-ebute ma nweta njigide mmiri dị elu.
Ya mere, n'ime ụlọ okpomọkụ nke okpomọkụ dị elu, iji nweta mmetụta njigide mmiri, ọ dị mkpa ịgbakwunye ngwaahịa HPMC dị elu na oke zuru ezu dịka usoro ahụ si dị, ma ọ bụghị ya, a ga-enwe hydration na-ezughị ezu, ike belata, mgbawa, oghere. na mwụfu kpatara oke ihicha.nsogbu, ma na-abawanye ihe isi ike nke ndị ọrụ.Ka okpomọkụ na-adaba, a ga-eji nwayọọ nwayọọ belata oke mmiri HPMC agbakwunyere, enwere ike nweta otu mmetụta njide mmiri.
3. Mgbasa nke hydroxypropyl methylcellulose HPMC
N'ime ụlọ ọrụ ihe owuwu, a na-etinyekarị hydroxypropyl methylcellulose HPMC n'ime mmiri na-anọpụ iche, a na-agbazekwa ngwaahịa HPMC naanị iji kpebie ọnụego mgbasa.Mgbe etinyechara ya na mmiri na-anọpụ iche, ngwaahịa nke na-agbakọta ngwa ngwa na-enweghị mgbasa bụ ngwaahịa na-enweghị ọgwụgwọ elu;mgbe etinyechara ya na mmiri na-anọpụ iche naanị, ngwaahịa nwere ike ịgbasa ma ghara ịgbakọ ọnụ bụ ngwaahịa nwere ọgwụgwọ elu.Mgbe elu untreated hydroxypropyl methylcellulose HPMC na-etisasịwo naanị, ya otu urughuru dissolves ngwa ngwa na-etolite a film ngwa ngwa, na-eme ka mmiri gharakwa ịbanye ọzọ irighiri ihe, na-akpata agglomeration na agglomeration, nke ugbu a na-akpọ ngwa ngwa dissolution na ahịa ngwaahịa.
Elu-emeso hydroxypropyl methylcellulose HPMC ngwaahịa ahụ, na-anọpụ iche mmiri, onye ahụ nwere ike chụsasịrị na-enweghị agglomeration, ma ngwaahịa viscosity agaghị ozugbo.Mgbe ịsachara maka oge ụfọdụ, a na-ebibi usoro kemịkalụ nke ọgwụgwọ elu, na mmiri nwere ike igbari ihe ndị HPMC.N'oge a, a na-achụsasị ngwaahịa ahụ n'ụzọ zuru ezu ma na-etinye ya na mmiri zuru oke, ya mere ngwaahịa ahụ agaghị eme ka ọ bụrụ agglomerate ma ọ bụ agglomerate mgbe mgbasa.Ọsọ mgbasa na mgbasa ozi na-adabere na ogo ọgwụgwọ elu.Ọ bụrụ na ọgwụgwọ elu dị ntakịrị, ọsọ nke mgbasa ozi na-adị nwayọọ ma na-agbagide ọsọ na-adị ngwa ngwa;mgbe ngwaahịa na miri n'elu ọgwụgwọ nwere ngwa ngwa mgbasa ọsọ na ngwa ngwa na-arapara ọsọ.Ọ bụrụ na ịchọrọ ime ka usoro ngwaahịa a gbazee ngwa ngwa na steeti a, ị nwere ike ịdaba obere ihe alkaline mgbe ha na-agbaze naanị.A na-akpọkarị ahịa ugbu a dị ka ngwaahịa ozugbo.The e ji mara elu-emeso HPMC ngwaahịa bụ: na aqueous ngwọta, na ahụ nwere ike gbasasịa na onye ọ bụla ọzọ, nwere ike igbari ngwa ngwa na alkaline ala, na igbari nwayọọ nwayọọ na-anọpụ iche na acidic ala.
Ihe e ji mara hydroxypropyl methylcellulose HPMC a na-agwọbeghị bụ: otu urughuru na-agbaze ngwa ngwa na steeti acidic, alkaline na nnọpụiche, mana enweghị ike ịgbasa n'etiti ihe ndị dị na mmiri mmiri, na-ebute nchịkọta na agglomeration.Na arụ ọrụ n'ezie, mgbe mgbasa anụ ahụ nke usoro ngwaahịa a na ihe siri ike dị ka ntụ ntụ roba, ciment, ájá, wdg, ọnụego mgbasa dị ngwa ngwa, ọ dịghịkwa agglomeration ma ọ bụ agglomeration.Mgbe ọ dị mkpa igbari ngwaahịa HPMC iche iche, a ga-eji nlezianya mee usoro ngwaahịa a, n'ihi na ọ ga-emewanyewanye ma jikọta ọnụ.Ọ bụrụ na ọ dị mkpa igbari ngwaahịa HPMC hydroxypropyl methylcellulose na-abụghị nke a na-agwọ, ọ dị mkpa ka a chụsa ya n'otu n'otu na mmiri ọkụ 95 ° C, wee mee ka ọ dị jụụ ka ọ gbazee.
N'ezie mmepụta ọrụ, a usoro nke ngwaahịa mgbe igbari mgbe na-chụgara ndị ọzọ siri ike urughuru ihe n'okpuru alkaline ọnọdụ, na mgbasa ọnụego adịghị iche na nke untreated ngwaahịa.Ọ dịkwa mma maka iji ngwaahịa na-agbaze naanị, na-enweghị caking ma ọ bụ lumps.Enwere ike ịhọrọ ụdị nke ngwaahịa a kapịrị ọnụ dị ka ọnụego mgbasa nke ihe owuwu ahụ chọrọ.
N'oge usoro ihe owuwu, ma ọ bụ ciment mortar ma ọ bụ gypsum dabeere na slurry, ọtụtụ n'ime ha bụ usoro alkaline, na ego nke HPMC agbakwunyere dị ntakịrị, nke nwere ike gbasaa n'etiti ihe ndị a.Mgbe agbakwunyere mmiri, HPMC ga-agbaze ngwa ngwa.
Oge nzipu: Dec-02-2022