Na-adịbeghị anya, na-aga n'ihu mmepe nke mpụga mgbidi mkpuchi technology, na-aga n'ihu na-aga n'ihu na-aga n'ihu nke cellulose mmepụta technology, na magburu onwe àgwà nke HPMC onwe ya, HPMC e ọtụtụ-eji na-ewu ụlọ ọrụ.
Iji nyochaa usoro ihe omume n'etiti HPMC na ihe ndị sitere na ciment, akwụkwọ a na-elekwasị anya na mmụba nke HPMC na njiko nke ihe ndị dabeere na ciment.
oge clotting
The mwube oge nke ihe bụ tumadi metụtara mwube oge nke ciment, na mkpokọta nwere obere mmetụta, otú mwube oge ngwa agha ike ga-eji kama na-amụ mmetụta nke HPMC na mwube oge nke n'okpuru mmiri na-abụghị dispersible ihe ngwakọta, n'ihi na oge nhazi nke ngwa agha na-emetụta mmiri Ya mere, iji nyochaa mmetụta nke HPMC na nhazi oge nke ngwa agha, ọ dị mkpa iji dozie mmiri-ciment ratio na ngwa ngwa nke ngwa agha.
Dị ka nnwale ahụ si kwuo, mgbakwunye HPMC nwere mmetụta nkwụsịtụ dị ịrịba ama na ngwakọta ngwa agha, na nhazi oge nke ngwa agha na-agbatịkwu nke ọma na mmụba nke ọdịnaya HPMC.N'okpuru otu ọdịnaya HPMC, ngwa agha a na-akpụzi n'okpuru mmiri na-agba ọsọ karịa ngwa agha a kpụrụ na ikuku.Oge ntọala nke ọkara ịkpụzi dị ogologo.Mgbe atụnyere n'ime mmiri, ma e jiri ya tụnyere oghere oghere, oge nhazi nke ngwa agha agwakọta na HPMC na-egbu oge site na awa 6-18 maka ntọala mbụ yana awa 6-22 maka nhazi ikpeazụ.Ya mere, HPMC kwesịrị ijikọ ya na ngwa ngwa.
HPMC bụ polymer dị elu nke nwere usoro linear macromolecular na otu hydroxyl na otu na-arụ ọrụ, nke nwere ike ịmepụta njikọ hydrogen na ngwongwo mmiri na-agwakọta ma mee ka viscosity nke mmiri na-agwakọta.Agbụ mkpụrụ ndụ ogologo nke HPMC ga-adọta ibe ha, na-eme ka ụmụ irighiri ihe HPMC na-ejikọta ibe ha iji mepụta usoro netwọkụ, na-ekechi ciment na ịgwakọta mmiri.Ebe ọ bụ na HPMC na-etolite usoro netwọkụ dị ka ihe nkiri ma kechie ciment, ọ ga-egbochi oke mmiri na ngwa ngwa, ma gbochie ma ọ bụ belata ọnụ ọgụgụ hydration nke ciment.
Ọbara
Ihe na-agba ọbara nke ngwa ngwa yiri nke kọnkịtị, nke ga-eme ka nchịkọta nchịkọta dị egwu, na-ebute mmụba nke mmiri-ciment ruru nke elu oyi akwa nke slurry, na-eme ka nnukwu plastic shrinkage nke elu oyi akwa nke slurry na mmalite. ogbo, na ọbụna cracking, na ike nke elu oyi akwa nke slurry dịtụ adịghị ike.
Mgbe usoro onunu ogwu dị n'elu 0.5%, ọ dịghị ihe ọ bụla na-agba ọbara.Nke a bụ n'ihi na mgbe a na-agwakọta HPMC n'ime ngwa agha ahụ, HPMC nwere nhazi ihe nkiri na nhazi netwọk, na mgbasa ozi nke hydroxyl dị iche iche na ogologo ogologo nke macromolecules na-eme ka ciment na ịgwakọta mmiri na ngwa ngwa na-etolite flocculation, na-eme ka usoro ahụ kwụsie ike. nke ngwa agha.Ka ịgbakwunye HPMC na ngwa agha ahụ, a ga-emepụta ọtụtụ afụ ikuku nwere onwe ha.A ga-ekesa ikuku ikuku ndị a n'otu n'otu na ngwa agha ma gbochie ntinye nke mkpokọta.Ọrụ teknụzụ nke HPMC nwere mmetụta dị ukwuu na ihe ndị sitere na ciment, a na-ejikarị akwadebe ihe ndị mejupụtara ciment ọhụrụ dị ka ụrọ ntụ ntụ na ụrọ polymer, ka o wee nwee ezigbo njide mmiri na njide plastik.
Ngwa ngwa mmiri achọ
Mgbe ego HPMC dị ntakịrị, ọ na-enwe mmetụta dị ukwuu na ọchịchọ mmiri nke ngwa agha.N'ihe banyere idobe ogo mgbasawanye nke ngwa agha ọhụrụ ahụ bụ otu ihe ahụ, ọdịnaya HPMC na ọchịchọ mmiri nke ngwa agha na-agbanwe na mmekọrịta linear n'ime oge ụfọdụ, na ọchịchọ mmiri nke ngwa agha ahụ na-ebu ụzọ belata wee mụbaa. doro anya.Mgbe ego nke HPMC na-erughị 0.025%, na mmụba nke ego, ọchịchọ mmiri nke ngwa agha na-ebelata n'okpuru otu ogo mgbasawanye, nke na-egosi na mgbe ego HPMC dị ntakịrị, ọ na-enwe mmetụta na-ebelata mmiri na mmiri. ngwa agha, na HPMC nwere mmetụta na-ekuku ikuku.Enwere ọnụ ọgụgụ buru ibu nke obere afụ ikuku nọọrọ onwe ya n'ime ngwa agha ahụ, afụ ikuku ndị a na-arụkwa ọrụ dị ka mmanu na-eme ka mmiri dị mma nke ngwa agha ahụ dịkwuo mma.Mgbe usoro onunu ogwu karịrị 0.025%, mkpa mmiri nke ngwa agha na-abawanye na mmụba nke usoro onunu ogwu.Nke a bụ n'ihi na usoro netwọk nke HPMC na-aga n'ihu zuru oke, na ọdịiche dị n'etiti flocs na ogologo eriri molecular na-ebelata, nke nwere mmetụta nke mmasị na njikọta, ma na-ebelata mmiri mmiri nke ngwa agha.Ya mere, n'okpuru ọnọdụ na ogo nke mgbasawanye bụ isi ihe, slurry na-egosi mmụba nke mmiri chọrọ.
01. Nnwale nguzogide mgbasa:
Mgbochi mgbasa bụ ihe dị mkpa teknuzu index iji tụọ àgwà nke mgbochi mgbasa ozi.HPMC bụ ngwakọta mmiri na-agbaze mmiri, nke a makwaara dị ka resin mmiri na-agbaze ma ọ bụ polymer soluble mmiri.Ọ na-eme ka nkwekọ nke ngwakọta ahụ dịkwuo mma site n'ịbawanye viscosity nke mmiri na-agwakọta.Ọ bụ ihe polymer nke hydrophilic nke nwere ike igbari na mmiri iji mepụta ngwọta.ma ọ bụ mgbasa.
Nnwale na-egosi na mgbe ọnụọgụ nke superplasticizer na-arụ ọrụ dị elu nke dabeere na naphthalene na-abawanye, mgbakwunye nke superplasticizer ga-ebelata nkwụsị mgbasa nke ngwa ngwa ciment agwakọta ọhụrụ.Nke a bụ n'ihi na onye na-ebelata mmiri na-arụ ọrụ dị elu nke naphthalene bụ ihe na-emepụta ihe.Mgbe a na-agbakwunye onye na-ebelata mmiri na ngwa ngwa, onye na-ebelata mmiri ga-adaba n'elu akụkụ ciment iji mee ka elu nke ciment ahụ nwee otu ụgwọ ahụ.Igwe ọkụ eletrik a na-eme ka akụkụ ciment na-etolite A na-ekpochapụ usoro flocculation nke ciment ahụ, a na-ahapụkwa mmiri nke a na-etinye n'ime ihe owuwu ahụ, nke ga-eme ka akụkụ nke ciment na-efunahụ ya.N'otu oge ahụ, a na-achọpụta na mmụba nke ọdịnaya HPMC, nkwụsị nke nkwụsị nke ciment ciment ọhụrụ na-akawanye mma.
02. Njiri ike nke kọmpụta:
Na a pilot ntọala oru ngo, HPMC n'okpuru mmiri na-abụghị dispersible ihe admixture etinyere, na imewe ike ọkwa bụ C25.Dị ka isi ule, ego nke simenti bụ 400kg, na compounded silica fume bụ 25kg / m3, ezigbo ego nke HPMC bụ 0.6% nke ciment ego, mmiri-ciment ruru 0.42, ájá ọnụego bụ 40%, na mmepụta nke naphthalene nke dabeere na mmiri na-arụ ọrụ dị elu nke na-eme ka mmiri dị elu bụ ọnụ ọgụgụ simenti bụ 8%, nkezi 28d ike nke ihe atụ nke ikuku bụ 42.6MPa, 28d nkezi ike nke mmiri n'okpuru mmiri na-adaba elu nke 60mm bụ 36.4MPa, na ike ruru nke mmiri na-eme ka mmiri na ihe ikuku kpụrụ bụ 84.8 %, mmetụta dị ịrịba ama karị.
03. Nnwale gosiri:
(1) Mgbakwunye nke HPMC nwere mmetụta retarding doro anya na ngwakọta ngwa agha.Site na mmụba nke ọdịnaya HPMC, a na-agbatị oge nhazi nke ngwa agha otu ugboro.N'okpuru otu ọdịnaya HPMC, ngwa agha a kpụrụ n'okpuru mmiri na-agba ọsọ karịa nke a kpụrụ na ikuku.Oge ntọala nke ọkara ịkpụzi dị ogologo.Njirimara a bara uru maka ịgbapụta mmiri n'okpuru mmiri.
(2) Ngwa ngwa ciment agwakọtara ọhụrụ nke agwakọtara na hydroxypropyl methylcellulose nwere ezigbo ihe jikọrọ ọnụ na ọ fọrọ nke nta ka ọ bụrụ na ọ dịghị ọbara ọgbụgba.
(3) Ọnụ ọgụgụ nke HPMC na agụụ mmiri nke ngwa agha agbadala na mbụ wee mụbaa n'ụzọ doro anya.
(4) Mgbakwunye nke mmiri na-ebelata mmiri na-eme ka nsogbu nke ịba ụba nke mmiri na-achọ ngwa ngwa, ma a ghaghị ịchịkwa usoro ọgwụgwọ ya nke ọma, ma ọ bụghị ya, a ga-ebelata nkwụsị mmiri nke mmiri simenti gwakọtara ọhụrụ mgbe ụfọdụ.
(5) Enwere obere ihe dị iche na nhazi n'etiti cement tapawa specimen gwakọtara na HPMC na oghere oghere, ọ dịghịkwa ihe dị iche na nhazi na njupụta nke cement tapawa specimen wụsara na mmiri na ikuku.Ihe atụ emebere n'okpuru mmiri ụbọchị iri abụọ na asatọ dị ntakịrị.Isi ihe kpatara ya bụ na mgbakwunye nke HPMC na-ebelata oke mfu na mgbasa nke ciment mgbe a na-awụsa na mmiri, ma ọ na-ebelatakwa mkpakọ nke nkume ciment.Na oru ngo, n'okpuru ọnọdụ nke n'ịhụ na mmetụta nke na-abụghị mgbasa n'okpuru mmiri, a ga-ebelata doseji nke HPMC dị ka o kwere mee.
(6) Ịgbakwunye HPMC n'okpuru mmiri na-adịghị agbasa ihe admixture, ịchịkwa usoro onunu ogwu bara uru na ike.Atumatu pilot na-egosi na ike ike nke mmiri na-eme ka mmiri na ikuku kpụrụ bụ 84.8%, na mmetụta ya dị ntakịrị.
Oge nzipu: Mee-06-2023