Hydroxypropyl methylcellulose (HPMC) bụ ihe a na-eji polymer eme ihe n'ọtụtụ ebe n'ime ihe owuwu ụlọ, karịsịa na nrapado tile. HPMC bụ ihe na-abụghị ionic cellulose ether kpụrụ site kemịkalụ gbanwetụrụ eke cellulose, na ezi ndim, njide mmiri, bonding, film-akpụ, nkwusioru na mmanu mmanu. Ngwongwo ndị a na-eme ka ọ rụọ ọrụ dị mkpa na nrapado tile, na-eme ka arụmọrụ na nrụpụta nke ngwaahịa ahụ dịkwuo mma.
1. Mmetụta dị arọ
Otu n'ime isi ọrụ HPMC na nrapado taịlị bụ ịgba. Mmetụta dị nro na-enye ohere ka ọ bụrụ ihe na-agbanwe agbanwe nke nrapado ka ọ dị mma, ka o wee nwee ike ịkwado mgbidi ma ọ bụ ala n'oge a na-ewu ya. HPMC na-abawanye viscosity nke nrapado site na igbari na mmiri na-etolite a colloidal ngwọta. Nke a abụghị naanị na-enyere aka melite njikwa mmiri nke nrapado na elu kwụ ọtọ, ma na-egbochikwa taịl nile ka ọ ghara ịdaba n'oge ịtọgbọ. Tụkwasị na nke ahụ, nkwụsi ike kwesịrị ekwesị nwere ike hụ na ndị na-arụ ọrụ na-arụ ọrụ na-adị mfe ịrụ ọrụ n'oge a na-eji ya eme ihe, na-emeziwanye ihe owuwu na mma.
2. Mmetụta njide mmiri
HPMC nwere ezigbo njide mmiri, nke dị mkpa karịsịa na ntinye nke tile adhesives. Njide mmiri na-ezo aka n'ikike HPMC na-ejigide mmiri nke ọma na nrapado, na-egbochi nrapado ka ọ ghara ihicha ngwa ngwa n'ihi oke evaporation nke mmiri mgbe a na-ewu ụlọ. Ọ bụrụ na nrapado na-efunahụ mmiri ngwa ngwa, ọ nwere ike ibute njikọ na-ezughị ezu, ike belata, na ọbụna nsogbu dị mma dị ka oghere na ịdapụ. Site na iji HPMC, mmiri dị na nrapado nwere ike ịnọgide na-adị ogologo oge, si otú ahụ na-eme ka nkwụsi ike na nkwụsi ike nke taịl nile ahụ gasịrị mgbe ọ gachara. Tụkwasị na nke ahụ, njide mmiri nwekwara ike ịgbatị oge oghere nke nrapado, na-enye ndị na-arụ ọrụ ihe owuwu oge iji gbanwee ma rụọ ọrụ.
3. Meziwanye ihe owuwu ihe owuwu
Ọnụnọ nke HPMC nwekwara ike imeziwanye arụmọrụ ihe owuwu nke adhesives tile. Kpọmkwem, a na-egosipụta ya na akụkụ ndị a:
Ịrụ ọrụ: HPMC na-eme ka ọ dị nro nke nrapado, na-eme ka ọ dị mfe itinye na ịgbasa. Ọganihu a na mmiri mmiri na-enye ohere ka a na-ekesa nrapado nke ọma mgbe ị na-etinye taịlị, si otú a na-ezere ọgbọ nke oghere na imeziwanye ihe mgbochi.
Mgbochi mwepu: N'oge a na-ewu mgbidi, HPMC nwere ike igbochi taịlị ka ọ daa ala n'ihi ike ndọda obere oge ịtọsịrị. Ngwongwo mgbochi a dị mkpa karịsịa maka taịlị buru ibu ma ọ bụ nke dị arọ, na-ahụ na taịl nile ahụ na-adị n'ebe ahụ tupu a gwọọ ya, na-ezere nhazi ma ọ bụ enweghị isi.
Wettability: HPMC nwere ezigbo mmiri mmiri, nke nwere ike ịkwalite mmekọrịta chiri anya n'etiti nrapado na azụ nke tile na elu nke mkpụrụ, na-eme ka adhesion ya dịkwuo elu. Nke a wettability nwekwara ike ibelata omume nke hollowing na melite mkpokọta bonding àgwà.
4. Meziwanye adhesion na mgbape mgbochi
Ngwa nke HPMC na nrapado tile nwere ike ime ka adhesion dịkwuo mma ma mee ka njikọ dị n'etiti taịlị na ihe ndị ọzọ sie ike. The film-akpụ ihe onwunwe nke HPMC ga-etolite a siri ike film mgbe ihicha, nke nwere ike n'ụzọ dị irè iguzogide mmetụta nke mpụga gburugburu ebe obibi, dị ka okpomọkụ mgbanwe, iru mmiri fluctuations, wdg, si otú eme ka mgbape mgbochi nke nrapado. Na mgbakwunye, mgbanwe mgbanwe nke HPMC na-enye na-enyere ihe nrapado aka ịnọgide na-enwe ike njikọ n'okpuru obere nrụrụ, na-ezere nsogbu mgbawa nke nrụgide nrụgide kpatara.
5. Melite nguzogide friza-thaws
N'ebe ụfọdụ oyi na-atụ, adhesives taịlị kwesịrị inwe ogo ụfọdụ nke nguzogide ntu oyi iji gbochie mmebi nke oyi akwa n'ihi mgbanwe okpomọkụ dị egwu. Ngwa nke HPMC nwere ike imeziwanye nguzogide ntu oyi nke adhesives ruo n'ókè ụfọdụ ma belata ihe ize ndụ nke mmebi kpatara site na oyi na thawing cycles. Nke a bụ n'ihi na HPMC nwere ụfọdụ mgbanwe na kpụrụ nrapado film oyi akwa, nke nwere ike itinye uche na nchekasị kpatara mgbanwe okpomọkụ, si otú na-echebe iguzosi ike n'ezi ihe nke nrapado oyi akwa.
6. Nchekwa akụ na ụba na gburugburu ebe obibi
HPMC, dị ka ihe sitere na cellulose eke, nwere ezigbo biodegradability na nchekwa gburugburu ebe obibi. Iji HPMC na nrapado tile nwere ike ibelata ọnụọgụ kemịkalụ nke ọma, si otú ahụ belata mmetụta na gburugburu ebe obibi. Tụkwasị na nke a, iji HPMC nwekwara ike imeziwanye ọnụ ahịa nke tile adhesives, ma belata ihe mkpofu ihe na imegharị ụgwọ ọrụ n'oge a na-ewu ụlọ site n'ịkwalite arụmọrụ nke adhesives.
Mmechi
Hydroxypropyl methylcellulose (HPMC) na-arụ ọrụ dị mkpa na nrapado tile. Ọkpụkpụ ya, njide mmiri, ịrụ ọrụ ihe owuwu ka mma, nkwụsi ike na mgbape mgbawa na ọrụ ndị ọzọ na-eme ka arụmọrụ nke nrapado taịlị dịkwuo mma. Nke a ọ bụghị nanị na-enyere aka melite mma owuwu, kamakwa ịgbatị ndụ ọrụ nke ụlọ. Site na mmepe nke teknụzụ na-aga n'ihu na nkwalite nke ihe nchekwa gburugburu ebe obibi chọrọ, atụmanya ngwa nke HPMC na ihe ụlọ ga-abawanye.
Oge nzipu: Sep-03-2024