Na-adịbeghị anya, na-aga n'ihu mmepe nke mpụga mgbidi thermal mkpuchi technology, na-aga n'ihu ọganihu nke hydroxypropyl methyl cellulose mmepụta technology, na magburu onwe e ji mara hydroxypropyl methyl cellulose HPMC onwe ya, hydroxypropyl methyl cellulose HPMC e ọtụtụ-eji na-ewu ụlọ ọrụ.
ịtọ oge
Oge nhazi nke ihe na-emetụta ya na nhazi oge nke ciment, na nchịkọta enweghị mmetụta dị nta.Ya mere, mwube oge nke ngwa agha nwere ike iji dochie nnyocha na mmetụta nke HPMC na mwube oge nke n'okpuru mmiri na-abụghị dispersive ihe ngwakọta.Ebe ọ bụ na nhazi oge nke ngwa agha na-emetụta oke ciment mmiri na ciment ájá, iji nyochaa mmetụta nke HPMC na nhazi oge nke ngwa agha, ọ dị mkpa iji dozie mmiri ciment nke mmiri na ciment ájá ruru nke ngwa agha.
Mmeghachi omume nnwale na-egosi na mgbakwunye nke HPMC nwere mmetụta azụ azụ na ngwakọta ngwa agha, na oge nhazi nke ngwa agha na-abawanye na mmụba nke cellulose ether HPMC.N'otu ego ahụ nke HPMC, oge nhazi nke ngwa agha kpụrụ n'okpuru mmiri dị ogologo karịa nke a kpụrụ na ikuku.Mgbe a tụrụ ya na mmiri, oge nhazi nke ngwa agha agwakọta ya na HPMC bụ 6 ~ 18h mgbe e mesịrị na ntọala mbụ na 6 ~ 22h mgbe e mesịrị na nhazi ikpeazụ karịa nke ụdị oghere.Ya mere, a ga-eji HPMC yana onye ọrụ ike mmalite.
HPMC bụ polymer nwere usoro linear macromolecular, yana otu hydroxyl dị n'otu ọrụ na-arụ ọrụ, nke nwere ike ịmepụta njikọ hydrogen na ngwakọta mmiri mkpụrụ ndụ iji mee ka viscosity nke ịgwakọta mmiri dịkwuo elu.The ogologo molekul chains nke HPMC ga-adọta ibe ha, na-eme HPMC molekul intertwine na-etolite a netwọk Ọdịdị, na ọbọp ciment na ịgwakọta mmiri.Dị ka HPMC na-emepụta usoro netwọk dị ka ihe nkiri ma kechie ciment, ọ nwere ike igbochi ngbanwe nke mmiri n'ime ngwa agha ma gbochie ma ọ bụ belata ọnụ ọgụgụ hydration ciment.
Ọbara
The na-agba ọsọ onu nke ngwa agha bụ yiri nke ihe, nke ga-eme ka oké njọ mmezi nke aggregates, dịkwuo mmiri ciment ruru nke n'elu oyi akwa slurry, na-eme ka elu oyi akwa slurry nwere nnukwu plastic shrinkage, ma ọ bụ ọbụna mgbawa na mmalite ogbo, na ike nke slurry elu adịghị ike.
Mgbe usoro onunu ogwu kariri 0.5%, enweghi ọbara ọgbụgba.Nke a bụ n'ihi na mgbe HPMC na-agwakọta n'ime ngwa agha, HPMC nwere film-akpụ na reticular Ọdịdị, nakwa dị ka adsorption nke hydroxyl na ogologo yinye nke macromolecule, nke na-eme ka ciment na ịgwakọta mmiri na ngwa agha ụdị flocculent, n'ịhụ ike Ọdịdị nke. ngwa agha.Mgbe agbakwunyere HPMC na ngwa agha, a ga-emepụta ọtụtụ obere afụ nwere onwe ha.A ga-ekesa afụ ndị a n'otu n'otu na ngwa ngwa ma gbochie ntinye nke mkpokọta.Ọrụ nka nke HPMC nwere mmetụta dị ukwuu na ihe ndị sitere na ciment, a na-ejikarị akwadebe ihe ndị sitere na ciment ọhụrụ dị ka ngwa ngwa akọrọ na ụrọ polymer, ka ha wee nwee ezigbo mmiri na njide plastik.
Ịchọ mmiri nke ngwa agha
Mgbe ego HPMC dị ntakịrị, ọ na-enwe mmetụta dị ukwuu na ọchịchọ mmiri nke ngwa agha.N'okpuru ọnọdụ na mgbasawanye nke ọhụrụ ngwa agha bụ isi otu, ego nke HPMC na mmiri na-achọ ngwa agha na-agbanwe linearly na a ụfọdụ oge, na mmiri na-achọ ngwa agha na-ebelata mbụ wee na-abawanye.Mgbe ọdịnaya HPMC na-erughị 0.025%, na mmụba nke ọdịnaya HPMC, ọchịchọ mmiri nke ngwa agha na-ebelata n'okpuru otu ogo mgbasawanye, nke na-egosi na obere ọdịnaya HPMC, mmiri na-ebelata mmetụta nke ngwa agha.Mmetụta ikuku ikuku nke HPMC na-eme ka ngwa agha ahụ nwee ọnụ ọgụgụ buru ibu nke obere egosipụta onwe ha, nke na-ekere òkè na mmanu mmanu ma na-eme ka mmiri nke ngwa agha dịkwuo mma.Mgbe usoro onunu ogwu kariri 0.025%, mkpa mmiri nke ngwa agha na-abawanye na mmụba nke usoro onunu ogwu, nke bụ n'ihi iguzosi ike n'ezi ihe n'ihu nke usoro netwọkụ nke HPMC, mbelata ọdịiche dị n'etiti flocs na agbụ molekul ogologo, ihe na-adọrọ adọrọ na njikọta, na mbelata nke mmiri mmiri nke ngwa agha.Ya mere, mgbe ogo mgbasawanye bụ otu ihe ahụ, slurry na-egosi mmụba nke agụụ mmiri.
Oge nzipu: Nov-25-2022