1. Nchịkọta na ihe onwunwe nke HPMC
Hydroxypropyl Methylcellulose (HPMC)bụ cellulose ether na-abụghị ionic. Ọ nwere àgwà nke mmiri solubility, ndim, njigide mmiri, ihe nkiri-akpụ, dispersibility na nkwụsi ike site na iwebata hydroxypropyl na methyl functional dị iche iche n'ime cellulose molekul Ọdịdị. A na-eji HPMC eme ihe n'ọtụtụ ebe n'ihe eji arụ ọrụ simenti dị ka ngwa agha ụlọ, ntụ ntụ, ciment na-edozi onwe ya na nrapado tile. N'ime ọrụ owuwu nke oge a, iji kwalite ịrụ ọrụ nke ngwa ngwa ciment, HPMC, dị ka ihe mgbakwunye na-arụ ọrụ bụ isi, nwere ike imeziwanye arụmọrụ na ịdịte aka nke ihe ndị dabeere na ciment.
2. Ọrụ HPMC na-eji ciment eme ihe eji arụ ụlọ
Mmetụta na-eme ka ahụ sie ike
Dị ka a thickener na ihe nkedo, HPMC nwere ike melite agbanwe agbanwe, bonding ike na operability nke ngwa agha n'oge ewu. Site na mmekorita ya na ciment na ájá, HPMC na-etolite usoro netwọkụ kwụsiri ike nke akụkụ atọ, nke na-enye ngwa agha ahụ ike njikọta siri ike, na-eme ka o sie ike delaminate na ọbara n'oge a na-ewu ụlọ, ebe ọ na-akpụ akwa mkpuchi n'elu iji hụ na ike na ịdịte aka.
Melite arụmọrụ njide mmiri
Njide mmiri bụ otu n'ime ihe kachasị mkpa na ngwa ngwa simenti, nke na-emetụta kpọmkwem ọganihu nke mmeghachi omume hydration ciment. HPMC nwere ike imeziwanye ikike njigide mmiri nke ngwa agha. Usoro njide mmiri ya bụ iji mee ka mmiri na-agbanwe agbanwe site n'ịmepụta ihe nkiri mmiri dị elu, nke mere na mmiri na-ekesa nke ọma na ngwa ngwa iji gbochie mmiri ozuzo ngwa ngwa. N'ụzọ dị otú a, na akọrọ ma ọ bụ elu okpomọkụ gburugburu ebe obibi, HPMC nwere ike n'ụzọ dị irè igbochi ngwa agha na-agbawa na imeziwanye ewu ewu na ndụ ọrụ nke ngwa agha.
Meziwanye ihe owuwu na ịrụ ọrụ mgbochi
Ngwunye ciment na-adịkarị mfe ịla n'oge a na-ewu ụlọ, na-emetụta àgwà na arụmọrụ nke ọrụ ahụ. Mgbakwunye nke HPMC nwere ike inye ngwa agha ahụ ọmarịcha arụmọrụ na-egbochi sagging, melite thixotropy nke ngwa agha, ma mee ka ọ sie ike ịfefe n'oge a na-ewu facade. N'otu oge ahụ, HPMC nwekwara ike ime ka ngwa agha ahụ nwee arụmọrụ na mmanu dị mma, kwalite ịdị mma nke ihe owuwu, belata ihe isi ike nke ihe owuwu, ma melite arụmọrụ ụlọ.
Mee ka mbelata na mgbape mgbape nke ngwa agha dịkwuo elu
Ngwa ngwa sitere na ciment na-enwekarị ike ịkụda mgbawa n'oge ihicha, na-ebute mbelata ịdịte aka. HPMC na-ebelata nke ọma ihe ize ndụ nke mgbawa site na imezi njikọ na ngbanwe nke ngwa agha. Na mgbakwunye, HPMC nwere ike ịgbatị oge mmeghachi omume hydration na ngwa agha, mee ka mmiri simenti zuo oke, si otú a na-ebelata mbelata nke ngwa agha ma melite mgbape mgbape nke ngwa agha.
3. Ngwa mpaghara nke HPMC
Ngwa ngwa plasta nkịtị
N'ime ngwa ngwa plasta nkịtị, HPMC nwere ike melite arụmọrụ njikọ na njigide mmiri nke ngwa agha, hụ na elu ụlọ ahụ bụ otu ma dị larịị, wee belata ihe mgbape. The thixotropy nke HPMC nwere ike dịkwuo mgbanwe nke ọrụ n'oge plasta, nke mere na ngwa agha nwere ike ngwa ngwa gwọọ na guzobe mgbe ngwa, ma nọgide na-enwe ezi elu mmetụta.
Tile nrapado
HPMCA na-eji ya eme ihe na nrapado taịlị, yana ezigbo njikọ ya na ihe mgbochi mgbochi nwere ike ịkwado tapawa taịlị. N'otu oge ahụ, HPMC nwere ike ịbawanye ductility na njigide mmiri nke nrapado taịlị, na-eme ka ihe owuwu ahụ guzosie ike ma na-adịgide adịgide. Karịsịa n'ime nnukwu ihe owuwu tile, HPMC nwere ike inyere ndị ọrụ na-ewu ụlọ aka ịkwado na ịhazigharị.
Ngwa ngwa ciment na-edozi onwe ya
Ngwa agha na-ebuli onwe ya bụ ihe na-edozi onwe ya, ihe na-eme ngwa ngwa nke a na-eji eme ka ọ dị larịị. HPMC na-ekere òkè n'ịgbasi ike na njide mmiri, na-eme ka ciment slurry na-eweda onwe ya kwụsie ike. HPMC nwekwara ike welie fluidity na dispersibility nke onwe-leveling ngwa agha, si otú na-ezere omume nke sedimentation.
Ngwa ngwa agwakọta akpọnwụ na ntụ ntụ
Na ngwa agha agwakọta akọrọ na ntụ ntụ, HPMC na-eme ka ịdị larịị na ịdị mma dị elu nke ihe owuwu ahụ dị site na njide mmiri na nrapado, na-egbochi ihicha na mgbawa. Na putty ntụ ntụ, HPMC ọ bụghị nanị na-enye ya mmetụta mkpuchi dị mma, ma na-ahụkwa na elu mgbe e wuchara ya adịghị mfe ịgbawa, na-emeziwanye àgwà njedebe na ndụ ọrụ.
4. Akpachara anya maka itinye HPMC na ngwa ụlọ nke dabeere na ciment
Njikwa onunu ogwu
Ọnụ ego nke HPMC agbakwunyere nwere mmetụta dị ukwuu na arụmọrụ nke ngwa agha ahụ. Mgbakwunye nke ukwuu ga-eme ka ngwa agha ahụ dị oke oke, sie ike ịrụ ọrụ, ma mepụta ọcha ma ọ bụ belata ike n'elu mgbe akpọnwụchara. Ya mere, a ghaghị ịchịkwa ego nke HPMC mgbe ị na-akwadebe ngwa agha ahụ. Ọnụ ego mgbakwunye a na-atụkarị aro bụ 0.1%-0.3% nke ịdị arọ ciment.
Ndakọrịta na admixtures ndị ọzọ
N'ihe ndị sitere na ciment, HPMC nwere ike imekọrịta ihe na mgbakwunye ndị ọzọ dị ka ndị na-ebelata mmiri, ihe ndị na-enye ikuku, na ihe mgbochi mgbawa. The ndakọrịta nke HPMC na ndị ọzọ admixtures kwesịrị ka atụle mgbe emebe usoro, na usoro kwesịrị ka kacha site nnwale iji hụ na kacha mma ịrụ ọrụ.
Usoro mgbasa na mgbasa
Ekwesịrị ịgbasa HPMC nke ọma mgbe ejiri ya zere agglomeration nke na-emetụta arụmọrụ nke ngwa agha ahụ. Enwere ike ịgbakwunye HPMC n'oge a na-agwakọta ya ka ọ gbazee ya nke ọma na mmiri, ka o wee nye ọrụ ya zuru oke.
HPMC a na-eji ọtụtụ ihe eji arụ ụlọ na-eji ciment eme ihe, ọ na-arụkwa ọrụ na-enweghị atụ n'ịkwalite mkpụkọ, njide mmiri na mgbochi mgbawa, na imeziwanye arụmọrụ ihe owuwu. Site na mmepe nke teknụzụ ihe owuwu ụlọ yana mmụba na-achọwanye maka nchekwa gburugburu ebe obibi na nchekwa ike, ngwa nke HPMC na-agbasawanye ma na-akawanye mma. Site na njikwa sayensị nke usoro ngwa na usoro onyunyo nke HPMC, enwere ike imeziwanye mmetụta nrụpụta na ịdịte aka nke ihe ndị sitere na ciment, na-akwalite mmepe na ọganihu nke ụlọ ọrụ ihe owuwu.
Oge nzipu: Nov-11-2024