HPMC (hydroxypropyl methylcellulose)bụ ngwakọta polymer nke a na-ejikarị na ngwaahịa ciment. Ọ nwere ọmarịcha ndim, ịgbasa, njigide mmiri na ihe nrapado, ya mere ọ nwere ike melite arụmọrụ nke ngwaahịa ciment. N'ime mmepụta na ntinye nke ngwaahịa ciment, ha na-enwekarị nsogbu ndị dị ka imeziwanye mmiri mmiri, ịkwalite nkwụsị mgbawa, na ịkwalite ike. Mgbakwunye nke HPMC nwere ike dozie nsogbu ndị a nke ọma.
1. Meziwanye mmiri na ịrụ ọrụ nke cement slurry
Na usoro mmepụta nke ngwaahịa ciment, mmiri mmiri bụ ihe dị mkpa na-emetụta ọrụ ụlọ na àgwà ngwaahịa. Dị ka a polymer thickener, HPMC nwere ike na-etolite a kwụsiri ike colloidal netwọk Ọdịdị na ciment slurry, si otú ahụ n'ụzọ dị irè na-eme ka fluidity na operability nke slurry. Ọ nwere ike belata viscosity dị iche nke ciment slurry, na-eme ka slurry dịkwuo plastik na adaba maka iwu na ịwụsa. Tụkwasị na nke ahụ, HPMC nwere ike ịnọgide na-enwe otu ụdị nke ciment slurry, gbochie slurry ciment nkewa n'oge usoro ngwakọta, ma melite arụmọrụ n'oge usoro ihe owuwu.
2. Kwalite njide mmiri nke ngwaahịa ciment
Usoro hydration nke ciment bụ isi ihe na-emepụta ike nke ngwaahịa ciment. Otú ọ dị, ọ bụrụ na mmiri dị na ciment slurry na-ekpochapụ ma ọ bụ na-efunahụ ngwa ngwa, mmeghachi omume hydration nwere ike ezughị ezu, si otú a na-emetụta ike na nchịkọta nke ngwaahịa ciment. HPMC nwere njigide mmiri siri ike, nke nwere ike ịmịnye mmiri nke ọma, gbuo oge ikuku mmiri, ma nọgide na-enwe mmiri nke ciment slurry n'ogo siri ike, si otú a na-enye aka na hydration zuru oke nke ciment, si otú ahụ meziwanye ike na ike nke ngwaahịa ciment. Njupụta.
3. Meziwanye nkwụsị mgbape na ike nke ngwaahịa ciment
Ngwaahịa simenti na-adịkarị mfe mgbawa n'oge usoro ike siri ike, karịsịa nkwụsịtụ nkwụsị nke na-akpata site na nkwụsị ngwa ngwa nke mmiri n'oge usoro ihicha. Mgbakwunye nke HPMC nwere ike melite mgbape mgbape nke ngwaahịa ciment site n'ịbawanye viscoelasticity nke slurry. Ọdịdị molekụla nke HPMC nwere ike ịmepụta usoro netwọkụ na ciment, nke na-enyere aka ịgbasa nrụgide dị n'ime ma belata ịta ahụhụ n'oge ciment siri ike, si otú ahụ na-ebelata ihe omume nke cracks. Na mgbakwunye, HPMC nwekwara ike melite ike nke ngwaahịa ciment, na-eme ka ọ ghara ịdị na-agbawa n'okpuru ọnọdụ akọrọ ma ọ bụ obere okpomọkụ.
4. Meziwanye nguzogide mmiri na ịdịte aka nke ngwaahịa ciment
Ịdịte aka na mmiri na-eguzogide mmiri nke ngwaahịa ciment na-emetụta kpọmkwem arụmọrụ ha na gburugburu ebe siri ike. HPMC nwere ike na-etolite a anụ ihe nkiri na ciment slurry iji belata penetration nke mmiri na ndị ọzọ na-emerụ bekee. Ọ nwekwara ike imeziwanye nkwụsị mmiri nke ngwaahịa ciment site n'ịkwalite njupụta nke ciment na ịkwalite nguzogide nke ngwaahịa ciment na mmiri. N'oge a na-eji ogologo oge eme ihe, ngwaahịa ciment na-akwụsi ike na oke iru mmiri ma ọ bụ gburugburu mmiri dị n'okpuru mmiri, ọ naghị adịkarị mfe igbasa na mbuze, na ịgbatị ndụ ọrụ ha.
5. Meziwanye ike na ike siri ike nke ngwaahịa ciment
N'oge usoro mmeghachi omume hydration nke ngwaahịa ciment, mgbakwunye HPMC nwere ike ịkwalite mgbasa nke ciment irighiri na ciment slurry ma mee ka mpaghara kọntaktị dị n'etiti ciment irighiri, si otú ahụ na-abawanye ọnụego hydration na ike uto nke ciment. Na mgbakwunye, HPMC nwere ike ịkwalite arụmọrụ ciment na mmiri dị mma, kwalite uto ike mmalite, mee ka usoro simenti sie ike karịa otu, wee si otú a kwalite ike ikpeazụ. N'ụfọdụ ngwa pụrụ iche, HPMC nwekwara ike ịhazigharị ọnụego hydration nke simenti iji kwekọọ n'ihe achọrọ ihe owuwu na gburugburu dị iche iche.
6. Meziwanye ọdịdị na ọdịdị elu nke ngwaahịa ciment
Ọdịdị ọdịdị nke ngwaahịa ciment dị oké mkpa maka njedebe ikpeazụ, karịsịa na ihe owuwu dị elu na ihe ịchọ mma, ebe ịdị larịị na ịdị nro nke ọdịdị ahụ bụ otu n'ime ihe ndị bụ isi iji tụọ àgwà. Site n'ịgbanwe viscosity na rheological Njirimara nke ciment slurry, HPMC nwere ike n'ụzọ dị irè ibelata nsogbu dị ka egosipụta, ntụpọ, na-erughị eru nkesa, si otú na-eme ka elu nke ciment ngwaahịa smoother na smoother, na-eme ka ọdịdị ọdịdị dị mma. N'ime ụfọdụ ngwaahịa ciment eji achọ mma, iji HPMC nwekwara ike melite ịdị n'otu na nkwụsi ike nke agba ha, na-enye ngwaahịa ndị ahụ ọdịdị dị nro karị.
7. Meziwanye nguzogide ntu oyi nke ngwaahịa ciment
Ngwaahịa ciment ndị a na-eji na gburugburu ebe okpomọkụ dị ala kwesịrị inwe ụfọdụ nguzogide ntu oyi iji gbochie mgbawa na mmebi nke cycles-thaws na-akpata. HPMC nwere ike melite ntu oyi nke ngwaahịa ciment site n'ịkwalite nkwụsi ike nhazi nke ciment slurry. Site na melite compactness nke ciment ngwaahịa na ibelata mmiri ọdịnaya nke ciment pores, HPMC mma ntu oyi-eguzogide nke simenti ngwaahịa n'okpuru ala okpomọkụ ọnọdụ na-ezere bughi mmebi mere site mgbasa nke ciment n'ihi kefriza nke mmiri.
Ngwa nkeHPMCna ngwaahịa ciment nwere ọtụtụ uru ma nwee ike imeziwanye arụmọrụ nke ngwaahịa ciment site na usoro dị iche iche. Ọ bụghị naanị na ọ ga-eme ka mmiri dị mma, njide mmiri, nkwụsị mgbawa na ike nke ngwaahịa ciment, ma na-emeziwanye ọdịdị elu, ịdịte aka na ntu oyi nke ngwaahịa ciment. Ka ụlọ ọrụ na-ewu ụlọ na-aga n'ihu na-emeziwanye ihe ndị a chọrọ maka ngwaahịa ciment, a ga-eji HPMC na-emewanyewanyewanye iji nye nkwado arụmọrụ siri ike na nke ọma maka mmepụta na ntinye nke ngwaahịa ciment.
Oge nzipu: Dec-06-2024