A na-eji ntụ ntụ Putty eme ihe maka nhazi na ịrụzi mgbidi n'oge a na-ewu ụlọ. Otú ọ dị, omenala putty ntụ ntụ na-adịkarị mfe nkwụsị na nro mgbe ọ na-ekpuchi mmiri, na-emetụta àgwà ihe owuwu na ndụ ọrụ nke ụlọ ahụ. Hydroxypropyl methylcellulose (HPMC), dị ka ihe mgbakwunye dị mkpa, nwere ike melite nguzogide mmiri nke ntụ ntụ putty.
1. Chemical Njirimara na isi ọrụ nke HPMC
Hydroxypropyl methylcellulose (HPMC) bụ ihe na-abụghị ionic cellulose ether nwere ọrụ dị iche iche dị ka ndim, imepụta ihe nkiri, nkwụsi ike, na wetting. A na-ejikarị ya eme ihe n'ihe owuwu ụlọ, ọgwụ, nri na ubi ndị ọzọ. Ọdịdị molekụla nke HPMC nwere hydrophilic hydroxyl otu (-OH) na hydrophobic hydrocarbon otu (-CH3, -CH2-), na-enye ya ezigbo mmiri solubility na nkwụsi ike. Ngwongwo ndị a na-enyere HPMC aka ịmepụta ngwọta colloidal kwụsiri ike n'ime mmiri ma mepụta usoro netwọkụ siri ike n'oge usoro ọgwụgwọ, si otú ahụ na-emeziwanye njirimara anụ ahụ nke ihe ahụ.
2. Mechanism iji meziwanye nguzogide mmiri
2.1. Mmetụta siri ike
HPMC nwere ike ịbawanye viscosity nke putty powder slurry nke ukwuu, na-ekwe ka slurry na-etolite usoro nkwusioru kwụsiri ike na mmiri. N'otu aka ahụ, mmetụta a na-eme ka ọ dịkwuo mma na-eme ka arụ ọrụ nke slurry dịkwuo mma ma na-ebelata ihe omume nke delamination na ọbara ọgbụgba; N'aka nke ọzọ, site na-akpụ a viscous slurry, HPMC ebelata penetration ọnụego nke mmiri molekul, si otú emeziwanye arụmọrụ nke putty ntụ ntụ. Mmiri na-eguzogide mgbe a gwọchara ya.
2.2. Njirimara ndị na-emepụta ihe nkiri
N'oge usoro ọgwụgwọ nke putty ntụ ntụ, HPMC ga-emepụta ihe nkiri dị egwu n'etiti ciment, mmiri na ihe ndị ọzọ. Akpụkpọ ahụ a nwere obere nnyefe ikuku mmiri ma nwee ike igbochi ntinye mmiri nke ọma. Ihe nkiri a na-emepụta site na HPMC nwekwara ike melite ike n'ibu ma na-eyi nguzogide nke ihe ahụ, na-eme ka mmiri na-eguzogide mmiri nke ntụ ntụ putty.
2.3. Melite nguzogide mgbape
Site n'ịkwalite modul na-agbanwe agbanwe na njide nke ntụ ntụ, HPMC nwere ike belata ihe ize ndụ nke mgbawa nke nkụchi nkụ na mgbanwe okpomọkụ kpatara. Mbelata ihe omume nke mgbawa ga-enye aka melite nkwụsị mmiri nke ntụ ntụ putty, n'ihi na mgbawa ga-aghọ ụzọ isi maka ntinye mmiri.
2.4. Njikwa mmeghachi omume hydration
HPMC nwere ike igbu oge mmeghachi omume hydration nke ciment, na-ekwe ka ntụ ntụ putty nwee ogologo oge iji gwọọ onwe ya na densify n'oge usoro siri ike. Mmeghachi omume hydration na-adịghị ngwa na-enyere aka ịmepụta nnukwu microstructure, si otú ahụ na-ebelata porosity nke ntụ ntụ putty ma melite arụmọrụ mmiri nke ihe.
3. Ngwa mmetụta nke HPMC na putty ntụ ntụ
3.1. Melite arụmọrụ ihe owuwu
HPMC na-ebuli njirimara rheological nke putty slurry, na-eme ka ọ dịrị ndị na-arụ ọrụ ụlọ mfe ịrụ ọrụ scraping na smoothing. N'ihi njiri mara mma ya na njigide mmiri, putty ntụ ntụ nwere ike ịnọgide na-enwe ọnọdụ mmiri dị mma mgbe etinyere ya, na-ebelata ihe omume nke nkụja akọrọ na imeziwanye ogo ihe owuwu.
3.2. Kwalite akụrụngwa akụrụngwa nke ngwaahịa emechara
Putty ntụ ntụ agbakwunyere na HPMC nwere ike ọrụ dị elu na adhesion mgbe ọ gwọchara ya, na-ebelata ohere nke ịgbawa na peeling. Nke a na-eme ka mma na ịdịte aka nke ụlọ ahụ dịkwuo mma.
3.3. Meziwanye ihe mgbochi mmiri nke mkpuchi ikpeazụ
Nlele na-egosi na ike nke putty ntụ ntụ agbakwunyere na HPMC na-ebelata ntakịrị mgbe etinyere ya na mmiri, ọ na-egosikwa nkwụsi ike na nkwụsi ike nke hydrolysis ka mma. Nke a na-eme putty ntụ ntụ iji HPMC dabara adaba maka mkpa ihe owuwu na gburugburu iru mmiri.
4. Ngwa akpachapụ anya
Ọ bụ ezie na HPMC nwere mmetụta dị ukwuu n'ịkwalite nkwụsị mmiri nke ntụ ntụ putty, ihe ndị na-esonụ dị mkpa ka a mara na ngwa bara uru:
4.1. Họrọ usoro onunu ogwu nke ọma
Ekwesịrị ịhazi usoro onunu ogwu nke HPMC nke ọma dịka usoro na ihe owuwu nke ntụ ntụ putty siri dị. Ojiji nke ukwuu nwere ike ime ka slurry dị oke viscous, na-emetụta ọrụ ihe owuwu; Ojiji ezughi oke nwere ike ọ gaghị arụ ọrụ nke ọma na mmetụta ya na-emepụta fim.
4.2. Mmekọrịta na mgbakwunye ndị ọzọ
A na-ejikarị HPMC eme ihe na ndị ọzọ cellulose ethers, latex powders, plasticizers and other additives iji nweta mmetụta zuru oke. Nhọrọ ezi uche dị na ya na ijikọta ihe mgbakwunye ndị a nwere ike ịkwalite arụmọrụ zuru oke nke ntụ ntụ putty.
4.3. Jikwaa ọnọdụ okpomọkụ na iru mmiri
Enwere ike imetụta njide mmiri nke HPMC mgbe etinyere ya na oke okpomọkụ ma ọ bụ gburugburu iru mmiri dị ala. Ekwesịrị ịrụpụta ihe owuwu n'okpuru ọnọdụ okpomọkụ na iru mmiri kwesịrị ekwesị dị ka o kwere mee, a ga-akwụkwa nlebara anya iji nọgide na-enwe mmiri nke slurry.
HPMC n'ụzọ dị irè mma mma mmiri iguzogide nke putty ntụ ntụ site na otutu usoro dị ka ndim, film e guzobere, na-eme ka mgbape nguzogide na ịchịkwa hydration mmeghachi omume, ikwe ka ọ na-egosipụta magburu onwe nkwụsi ike na anwụ ngwa ngwa na iru mmiri gburugburu. Nke a ọ bụghị naanị na-eme ka mma na ịrụ ọrụ nke ọma rụọ ụlọ, kamakwa ọ na-agbatị ndụ ọrụ nke ụlọ ahụ. Na ngwa bara uru, nhọrọ ezi uche dị na ya na iji HPMC na ihe mgbakwunye ndị ọzọ nwere ike ịkwalite arụmọrụ nke ntụ ntụ putty ma nweta nsonaazụ ụlọ dị elu.
Oge nzipu: Jun-26-2024