Hydroxypropyl methylcellulose, nke a na-akpọ: HPMC ma ọ bụ MHPC. Ọdịdị dị ọcha ma ọ bụ na-acha ọcha ntụ ntụ; Isi ihe eji eme ihe dị ka onye na-ekesa na mmepụta nke polyvinyl chloride, ọ bụkwa isi ihe enyemaka maka nkwadebe nke PVC site na nkwusioru polymerization. N'ime usoro ihe owuwu nke ụlọ ọrụ mmepụta ihe, a na-ejikarị ya eme ihe na-arụ ọrụ nhazi dịka mgbidi mgbidi, plasta, caulking, wdg; karịsịa n'ihe owuwu ihe eji achọ mma, a na-eji ya mado taịlị ceramic, marble, na ihe ịchọ mma plastik. Ọ nwere ike njikọ dị elu ma nwee ike belata ọnụ ọgụgụ ciment. . A na-eji ya dị ka onye na-agba agba na ụlọ ọrụ agba, nke nwere ike ime ka oyi akwa na-egbuke egbuke ma dị nro, gbochie iwepụ ntụ ntụ, melite arụmọrụ ọkwa, wdg.
N'ime ngwa simenti na slurry dabeere na gypsum, hydroxypropyl methylcellulose na-arụ ọrụ nke njide mmiri na ịgbatị, nke nwere ike imeziwanye ike na-ejikọta ọnụ na nkwụsị nke slurry.
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, na oge dị iche iche, e nwere ụfọdụ ọdịiche dị na mmiri na-ejide mmiri nke ngwaahịa na otu ego nke hydroxypropyl methylcellulose agbakwunyere.
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. 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.
Ngwaahịa usoro hydroxypropyl methylcellulose dị mma nwere ike dozie nsogbu nke njigide mmiri n'okpuru oke okpomọkụ. N'oge okpomọkụ dị elu, karịsịa n'ebe ndị na-ekpo ọkụ ma na-ekpo ọkụ na ebe a na-emepụta ihe na-egbuke egbuke n'akụkụ anwụ na-acha, a chọrọ HPMC dị elu iji meziwanye njide mmiri nke slurry.
HPMC dị elu nwere otu ezigbo mma. A na-ekesa methoxy na hydroxypropoxy otu ya n'otu n'otu n'akụkụ eriri molekụla cellulose, nke nwere ike melite ikike ikuku oxygen na hydroxyl na ether bond iji jikọọ na mmiri iji mepụta njikọ hydrogen. , nke mere na mmiri n'efu na-aghọ mmiri a na-ekekọta, ka o wee nwee ike ịchịkwa evaporation nke mmiri na-akpata site na ihu igwe dị elu, ma nweta nnukwu njigide mmiri.
A na-achọ mmiri maka hydration iji tọọ ihe simenti dị ka ciment na gypsum. Ọnụ ego ziri ezi nke HPMC nwere ike idowe mmiri na ngwa ngwa ogologo oge ka nhazi na usoro siri ike wee gaa n'ihu.
Ọnụ ego HPMC achọrọ iji nweta ndogide mmiri zuru oke dabere na:
1. The absorbency nke isi oyi akwa
2. Nhazi nke ngwa agha
3. Mortar oyi akwa ọkpụrụkpụ
4. Mmiri chọrọ ngwa agha
5. Oge nhazi oge nke ihe gelling
High-edu hydroxypropyl methylcellulose nwere ike uniformly na n'ụzọ dị irè chụsasịrị na ciment ngwa agha na gypsum dabeere na ngwaahịa, na kechie niile siri ike ahụ, na-etolite a wetting film, na mmiri na isi na-eji nwayọọ nwayọọ tọhapụrụ ogologo oge , na mmeghachi omume hydration na ihe gelling inorganic iji hụ na ike njikọ na ike mkpakọ nke ihe.
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.
Oge nzipu: Jan-16-2023