N'ime ihe ịchọ mma ụlọ, putty bụ ihe bụ isi maka nhazi mgbidi na primer, nke metụtara ya kpọmkwem na ịdị mma ụlọ na ihe ịchọ mma nke mkpuchi na-esote, akwụkwọ ahụaja na njedebe ndị ọzọ. Iji melite ewu arụmọrụ na-eji arụmọrụ nke putty, a ụfọdụ nkezi nkecellulose etherA na-agbakwunyekarị ihe mgbakwunye na usoro ya. N'ime afọ ndị na-adịbeghị anya, ether cellulose gbanwetụrụ ejirila nwayọọ nwayọọ ghọọ akụkụ bụ isi na mmepụta putty n'ihi arụmọrụ ya dị mma.
1. Nchịkọta nke cellulose ethers gbanwetụrụ
Cellulose ether bụ klaasị nke mmiri-soluble ma ọ bụ na-ekesa polymer ogige mere site etherifying na modize akụkụ nke hydroxyl otu nke eke cellulose site chemical ụzọ. Common cellulose ethers na-agụnye hydroxypropyl methylcellulose (HPMC), methyl cellulose (MC), sodium carboxymethyl cellulose (CMC-Na), wdg The a na-akpọ "gbanwee" cellulose ether na-ezo aka iwebata ọtọ substituents ma ọ bụ ụkpụrụ nke ya Ọdịdị na ndabere nke isi cellulose ether ka mma ya solubility, alkali solubility wdg. iji mezuo ihe achọrọ maka ịrụ ọrụ ihe na ngwa ụlọ.
2. Usoro ọrụ nke cellulose ether gbanwetụrụ na putty
Wall putty na-emekarị ihe mejupụtara inorganic ihe dị ka lime ntụ ntụ, ciment, talcum ntụ ntụ, wdg. Ihe ndị a dị mfe ịkwanye, delaminate, mgbape ma ọ bụ na-adịghị mma ewu arụmọrụ mgbe agbakwunyere mmiri na edemede. Mgbe ịgbakwunye cellulose ether gbanwetụrụ, ọ na-arụ ọrụ ndị a na putty:
Ejikwa mmiri emeziwanye: cellulose ether gbanwetụrụ nwere oke mmiri mmiri na njigide mmiri, nke nwere ike igbachi mmiri ahụ nke ọma, gbochie mmiri ịpụ ngwa ngwa ma ọ bụ na-etinye ya na oyi akwa n'oge a na-ewu ya, si otú ahụ hụ na putty nwere oge mmeghachi omume hydration zuru oke, na-eme ka ike njikọ na-ebelata ihe ize ndụ nke ịgbawa.
Ịrụ ọrụ ihe owuwu ka mma: Cellulose ether nwere ike inye putty magburu onwe ya slipping na scraping Njirimara, belata nguzogide n'oge ewu, na-eme ka owuwu mfe na ire ụtọ. N'otu oge ahụ, mmetụta ya na-eme ka ọ dịkwuo mma nwekwara ike imeziwanye mmiri na nkwusioru nke putty, ma gbochie ihe ahụ site na imi na delamination.
Ike njikọ dị mma: A na-emepụta usoro netwọk dị mma n'etiti cellulose ether gbanwetụrụ na ngwaahịa hydration ciment, nke na-enyere aka ịkwalite njikọ nke interfacial n'etiti putty na isi oyi akwa ma melite nchikota n'ozuzu ya.
Ngwongwo mgbochi na-eme ka ọ dị mma: Njirimara thixotropic dị mma na-eme ka putty ghara ịdị na-ada n'oge ihe owuwu facade, ma nwee ike ịmepụta mkpuchi dị larịị, nke na-enweghị atụ, na-eme ka nrụpụta ụlọ na-arụ ọrụ na ngwaahịa ngwaahịa.
Nkwụsi ike na nchekwa emelitere: cellulose ether gbanwere nwere ike igbochi stratification, mmiri ozuzo na agglomeration nke putty n'oge njem na nchekwa, ma melite nkwụsi ike nke ngwaahịa.
3. Ụzọ mgbanwe na njikarịcha arụmọrụ
Ụzọ mgbanwe ndị a na-emekarị gụnyere iwebata otu hydrophobic, ịgbanwe ogo ngbanwe, na ịhazi nkesa arọ molekụla. Dị ka ihe atụ, hydrophobically gbanwetụrụ HPMC (dị ka HPMC-M) nwere ike n'ihu melite mmiri na-eguzogide na oké mkpuchi nke putty, na site ịchịkwa etherification mmeghachi omume ọnọdụ, ngwaahịa na kpọmkwem jel okpomọkụ na rheological omume nwere ike nweta izute ihe owuwu mkpa nke dị iche iche climates na isi ọnọdụ.
Enwekwara ngwaahịa cellulose ether pụrụ iche nke emepụtara maka ngwa dị iche iche, dị ka gel okpomọkụ HPMC dị mma maka ụlọ okpomọkụ dị elu, obere viscosity na nnukwu njigide mmiri HPMC, wdg, iji zute ahịa dị iche iche na usoro chọrọ.
4. Akpachara anya maka ojiji
N'ime usoro nhazi na mmepụta nke putty, ekwesịrị iburu n'uche isi ihe ndị a mgbe ị na-eji cellulose ether emezigharị:
Na-achịkwa ego nke mgbakwunye, n'ozuzu 0.2% na 0.5% nke arọ nke putty akọrọ ntụ ntụ; nke ukwuu nwere ike imetụta oge ihicha na arụmọrụ mkpuchi na-esote.
Ngwakọta tupu akpọọ nkụ kwesịrị ịdị otu wee kpalite ya na mmiri iji hụ na ether cellulose na-agbasasị nke ọma na enweghị lumps.
Họrọ ụdị ether cellulose kwesịrị ekwesị dị ka ebe a na-ewu ụlọ (dị ka okpomọkụ, iru mmiri) na ụdị putty (mgbidi dị n'ime, mgbidi dị n'èzí, ụdị mmiri na-adịghị, wdg).
Dị ka ihe mgbakwunye na-arụ ọrụ na arụmọrụ dị mma,cellulose ether gbanwerena-arụ ọrụ na-enweghị atụ na nke dị mkpa na mmepụta na ntinye nke putty. Ọ bụghị naanị na ọ na-eme ka ihe dị mma na-ewu mma na ihe anụ ahụ nke putty dịkwuo mma, ma na-enyekwa ngwọta a pụrụ ịdabere na ya na nke ọma maka ọgwụgwọ ntọala mgbidi. Site na nkwalite na-aga n'ihu nke ụlọ akwụkwọ ndụ akwụkwọ ndụ na echiche ihe owuwu dị mma, ọchịchọ maka putty dị elu na-eto eto, na atụmanya ngwa nke cellulose ether gbanwetụrụ n'ọhịa nke ihe owuwu ga-abawanye.
Oge nzipu: Mee-15-2025