HPMC, aha zuru oke bụ Hydroxypropyl Methylcellulose, bụ ihe kemịkalụ nke a na-ejikarị eme ihe eji ewu ụlọ, ọkachasị n'ụdị putty mgbidi. HPMC bụ nonionic cellulose ether nwere ezigbo mmiri solubility na multifunctionality. A na-ejikarị ya eme ihe n'ihe owuwu, ọgwụ, nri, ihe ịchọ mma na mpaghara ndị ọzọ.
1. Chemical Ọdịdị na Njirimara nke HPMC
A na-emepụta HPMC site na mgbanwe kemịkalụ nke cellulose eke. Ọdịdị kemịkal ya bụ isi bụ na otu methyl na hydroxypropyl nọchiri akụkụ hydroxyl nke cellulose. Ọdịdị a na-enye HPMC pụrụ iche nke anụ ahụ na kemịkal. Ọ nwere ike igbari ngwa ngwa na mmiri iji mepụta ngwọta colloidal transperent, ma nwee ọtụtụ ọrụ dị ka ịgbatị, nkwusioru, adhesion, emulsification, nhazi ihe nkiri na njide mmiri.
2. Ọrụ HPMC na mgbidi putty
Na usoro nke mgbidi putty, HPMC na-arụ ọrụ ndị a:
Mmetụta siri ike: HPMC nwere ike ịbawanye viscosity nke putty nke ukwuu, na-eme ka ọ ghara ịla n'iyi n'oge a na-ewu ụlọ, si otú ahụ hụ na akwa putty na-ekpuchi mgbidi ahụ nke ọma na nke ọma.
Njide mmiri: HPMC nwere njigide mmiri siri ike, nke nwere ike igbochi ngwa ngwa nke mmiri n'oge usoro ihicha nke putty. Njirimara a na-eme ka ọgwụgwọ nkịtị na ike siri ike nke putty na-egbochi nsogbu ndị dị ka ihicha, cracking na powdering.
Mmanya mmanu na ịrụ ọrụ ihe owuwu: Mgbakwunye nke HPMC nwere ike melite mmanu nke putty, na-eme ka ihe owuwu ahụ dịkwuo nro. Ọ nwekwara ike ịgbatị oge mmeghe nke putty (ya bụ, oge ihe mkpuchi ahụ na-anọgide na-abụ mmiri), na-eme ka ọ dịkwuo mfe maka ndị ọrụ ụlọ ọrụ.
Nchikota na nhazi ihe nkiri: HPMC nwere ụfọdụ ihe nrapado, nke nwere ike ime ka adhesion dị n'etiti putty na mgbidi ma belata ihe ize ndụ nke ịwụfu na mgbawa. Tụkwasị na nke ahụ, HPMC nwekwara ike ịmepụta ihe nkiri nchebe iji mee ka ọ dịkwuo ogologo oge na nkwụsị mgbawa nke putty.
3. Otu esi eji HPMC na akpachapụ anya
N'ime usoro nkwadebe nke putty, HPMC na-ejikọta ya na ihe ndị ọzọ akọrọ akọrọ na ntụ ntụ, wee gbasaa ma rụọ ọrụ n'oge usoro ngwakọta nke ịgbakwunye mmiri. Dabere na usoro putty, ọnụ ọgụgụ nke HPMC agbakwunyere na-abụkarị n'etiti 0.1% na 0.5%, mana a ga-edozi ego a kapịrị ọnụ dịka ihe achọrọ nke putty na ọnọdụ owuwu.
Ịkwesịrị ịṅa ntị na isi ihe ndị a mgbe ị na-eji HPMC:
Usoro mgbasa: HPMC dị mfe soluble na mmiri oyi, n'ihi ya, a na-atụ aro ka ị gwakọta ya na obere ntụ ntụ ntụ mbụ, wee tinye ya na mmiri ma kpalie. Zere itinye HPMC ozugbo n'ime nnukwu mmiri iji gbochie agglomeration.
Mmetụta okpomọkụ: Solubility nke HPMC na-emetụta okpomọkụ. Mgbasa na-eji nwayọ na obere okpomọkụ yana oge mkpali kwesịrị ịgbatị nke ọma. Okpomọkụ dị elu nwere ike ime ka ọ̀tụ̀tụ̀ mgbasa ozi na-aga ngwa ngwa, ya mere ọ dị mkpa ka a gbanwee ọnọdụ ihe owuwu nke ọma.
Njikwa ogo: Ogo nke HPMC n'ahịa adịghị mma. Ngwaahịa nwere àgwà a pụrụ ịdabere na ya kwesịrị ịhọrọ n'oge a na-ewu ụlọ iji hụ na arụmọrụ kwụsiri ike nke putty.
4. Ngwa ndị ọzọ nke HPMC n'ọhịa nke ihe owuwu ụlọ
Na mgbakwunye na ngwa ya sara mbara na putty mgbidi, HPMC nwere ọtụtụ ojiji ndị ọzọ na mpaghara ihe owuwu ụlọ. A na-eji ya na seramiiki tile adhesives, ngwaahịa gypsum, ngwa agha na-edozi onwe ya na ihe ndị ọzọ na-eme ka ọ sie ike, na-ejigide mmiri ma melite arụmọrụ ụlọ. Na mgbakwunye, a na-ejikwa HPMC n'ọtụtụ ebe na mkpuchi, agba latex, ngwa ụlọ na ihe ndị ọzọ, na-aghọ ihe mgbakwunye kemịkalụ dị mkpa n'ọhịa ihe owuwu.
5. Ọdịnihu mmepe ọnọdụ
Site na ịrị elu nke ụlọ akwụkwọ ndụ akwụkwọ ndụ na echiche nchebe gburugburu ebe obibi, a na-etinye ihe ndị dị elu na nchekwa gburugburu ebe obibi nke ihe mgbakwunye kemịkal na ihe owuwu ụlọ. Dị ka ihe mgbakwunye enyi na enyi gburugburu ebe obibi, HPMC ga-aga n'ihu na-etolite n'ọdịnihu na ntụziaka nke imeziwanye arụmọrụ, ibelata ọnụ ahịa, na ibelata mmetụta gburugburu ebe obibi. Na mgbakwunye, ngwaahịa HPMC ahaziri maka ọnọdụ ngwa dị iche iche ga-abụkwa ihe na-ewu ewu, na-akwalite ihe ọhụrụ na mmepe nke ihe owuwu ụlọ.
Ngwa nke HPMC na mgbidi mgbidi na ihe ndị ọzọ na-ewu ụlọ na-enye nkwa dị mkpa maka imeziwanye ogo ụlọ na ịrụ ọrụ nke ọma. Ihe dị ya mkpa n'ọhịa ihe owuwu na-egosipụta onwe ya.
Oge nzipu: Ọgọst-16-2024