Hydroxypropyl methylcellulose bụ ether cellulose na-abụghị ionic emebere site na owu a nụchara anụcha site na usoro mmeghachi omume kemịkal. Ọ bụ ihe na-esi ísì ụtọ na-adịghị egbu egbu na-agbaze n'ime mmiri ma na-enye ngwọta colloidal doro anya ma ọ bụ dị ntakịrị. Ọ nwere njirimara nke ndina, njigide mmiri na ihe owuwu dị mfe. Aqueous ngwọta nke hydroxypropyl methylcellulose HPMC bụ dịtụ kwụsiri ike na nso nke HP3.0-10.0, na mgbe ọ bụ ihe na-erughị 3 ma ọ bụ karịa 10, viscosity ga-ukwuu ibelata.
Isi ọrụ nke hydroxypropyl methylcellulose na simenti ngwa agha na putty ntụ ntụ bụ njigide mmiri na ndim, nke nwere ike imeziwanye njikọ na sag nguzogide nke ihe.
Ihe ndị dị ka okpomọkụ na ọsọ ifufe ga-emetụta ọnụọgụ volatilization nke mmiri na ngwa agha, putty na ngwaahịa ndị ọzọ, ya mere na oge dị iche iche, mmetụta njigide mmiri nke ngwaahịa ndị nwere otu cellulose agbakwunyere ga-enwekwa ụfọdụ ọdịiche. 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 hydroxypropyl methylcellulose HPMC na oke okpomọkụ bụ ihe dị mkpa na-egosi ọdịiche dị n'etiti àgwà HPMC. HPMC mara mma nwere ike dozie nsogbu nke njide mmiri n'okpuru ọnọdụ okpomọkụ dị elu. N'oge ọkọchị na mpaghara nwere oke okpomọkụ na oke ikuku dị elu, ọ dị mkpa iji HPMC dị elu iji meziwanye ọrụ njigide mmiri nke slurry.
Ya mere, na okpomọkụ dị elu na-ewu ụlọ okpomọkụ, iji nweta mmetụta njigide mmiri, ọ dị mkpa iji tinye ego zuru oke nke HPMC dị elu dị ka usoro ahụ si dị, ma ọ bụghị ya, a ga-enwe nsogbu dị mma dị ka hydration na-ezughị ezu, ike na-ebelata, mgbawa. , oghere na ịwụfu kpatara site na ihicha ngwa ngwa, ma n'otu oge ahụ mụbara ihe isi ike nke onye ọrụ na-ewu. Ka okpomọkụ na-adaba, ọnụ ọgụgụ nke HPMC agbakwunyere nwere ike jiri nwayọọ nwayọọ belata, enwere ike nweta otu mmetụta njide mmiri.
Na mmepụta nke ihe owuwu ụlọ, hydroxypropyl methylcellulose bụ ihe mgbakwunye dị mkpa. Mgbe ịgbakwunye HPMC, enwere ike imeziwanye akụrụngwa ndị a:
1. Njide mmiri: Mee ka njigide mmiri dịkwuo mma, melite ngwa ngwa ciment, akọrọ ntụ ntụ putty ngwa ngwa ihicha na hydration na-ezughị ezu kpatara adịghị ike hardening, cracking na ndị ọzọ phenomena.
2. Adhesiveness: N'ihi mma plasticity nke ngwa agha, ọ nwere ike mma njikọ nke mkpụrụ na adherend.
3. Anti-sagging: N'ihi mmetụta ọ na-eme ka ọ dị arọ, ọ nwere ike igbochi nkwụsị nke ngwa agha na ihe ndị a na-ejikọta ya n'oge a na-ewu.
4. Ịrụ ọrụ: Mee ka plasticity nke ngwa agha dịkwuo elu, meziwanye mmepụta ihe na-ewu ụlọ ma melite arụmọrụ ọrụ.
Oge nzipu: Eprel-12-2023