Cellulose ether bụ ihe mgbakwunye a na-ejikarị na ihe owuwu ụlọ, nke a na-eji eme ka arụ ọrụ ihe owuwu na arụ ọrụ nke ngwa agha dịkwuo elu. Ịdị mma bụ otu n'ime njirimara dị mkpa nke cellulose ether, nke na-ezo aka na nkesa nha nha.
Njirimara na ngwa nke cellulose ether
Cellulose ether tumadi gụnyere hydroxypropyl methylcellulose (HPMC), hydroxyethyl cellulose (HEC), wdg. Ha isi ọrụ na-ewu ngwa agha gụnyere:
Njide mmiri: site na ibelata evaporation mmiri, ịgbatị oge hydration ciment, na ịkwalite ike ngwa agha.
Ọkpụkpụ: Mee ka viscosity nke ngwa agha dịkwuo elu ma melite arụmọrụ ụlọ.
Mee ka mgbape mgbape dịkwuo mma: Ngwongwo mmiri nke cellulose ether na-enyere aka ịchịkwa mbelata nke ciment, si otú ahụ na-ebelata ihe mgbawa na ngwa ngwa.
Ịdị mma nke cellulose ether na-emetụta dispersibility ya, solubility na arụmọrụ na ngwa agha, si otú ahụ na-emetụta ọrụ dum nke ngwa agha.
Enwere ike nyochaa mmetụta cellulose ether fineness na ike ngwa agha site na akụkụ ndị a:
1. Mgbasa ọnụego na dispersibility
Ọnụego mgbasa nke cellulose ether na mmiri nwere njikọ chiri anya na ịdị mma ya. Cellulose ether particles na elu fineness na-ọzọ mfe etisasịwo na mmiri, otú ngwa ngwa akpụ a edo dispersion. Nkesa otu a nwere ike hụ na ndogide mmiri kwụsiri ike na ịgbasa n'ime sistemu ngwa agha niile, kwalite n'otu aka ahụ nke mmeghachi omume hydration ciment, ma melite ike ngwa ngwa.
2. Ike njide mmiri
Ịdị mma nke cellulose ether na-emetụta ọrụ njigide mmiri ya. Ihe ndị dị na cellulose ether nwere mma dị elu na-enye ebe dị elu nke ukwuu, si otú ahụ na-emepụta ihe ndị na-eme ka mmiri dị na ngwa ngwa. Micropores ndị a nwere ike ijigide mmiri nke ọma karị, gbatịa oge mmeghachi omume hydration ciment, kwalite mmepụta nke ngwaahịa hydration, wee si otú a na-eme ka ike nke ngwa agha dịkwuo elu.
3. Njikọ njikọ
N'ihi na ha dị mma dispersibility, cellulose ether ahụ na elu fineness nwere ike na-etolite a ọzọ edo bonding oyi akwa n'etiti ngwa agha na mkpokọta, na melite interface bonding nke ngwa agha. Mmetụta a na-enyere ngwa agha ahụ aka ịnọgide na-enwe ezigbo plasticity n'oge mmalite, na-ebelata ihe omume nke mgbawa shrinkage, ma si otú ahụ meziwanye ike zuru ezu.
4. nkwalite nke ciment hydration
N'oge usoro hydration ciment, ịmepụta ngwaahịa hydration chọrọ ụfọdụ mmiri. Cellulose ether na mma dị elu nwere ike ịmepụta ọnọdụ hydration ndị ọzọ na ngwa agha, zere nsogbu nke ezughị oke ma ọ bụ oke mmiri dị n'ógbè ahụ, hụ na ọganihu nke mmeghachi omume hydration na-aga n'ihu, ma si otú ahụ meziwanye ike nke ngwa agha.
Ọmụmụ ihe nnwale na nyocha nsonaazụ
Iji chọpụta mmetụta cellulose ether dị mma na ike ngwa agha, ụfọdụ nnyocha nyocha mere ka ịdị mma nke cellulose ether dị mma ma nwalee ihe eji arụ ọrụ nke ngwa agha n'okpuru oke dị iche iche.
Nleba anya
Nnwale ahụ na-ejikarị ihe nlele cellulose ether nke mma dị iche iche ma na-agbakwụnye ha na ngwa ngwa ciment n'otu n'otu. Site n'ịchịkwa mgbanwe ndị ọzọ (dịka mmiri-ciment ratio, nchịkọta nchịkọta, oge ngwakọta, wdg), naanị mma nke cellulose ether gbanwere. A na-emezi usoro ule ike, gụnyere ike mkpakọ na ike mgbanwe.
Nsonaazụ nnwale na-egosikarị:
Ihe nlele cellulose ether nwere ịdị mma dị elu nwere ike imeziwanye ike mkpakọ na ike mgbanwe nke ngwa agha n'oge mmalite (dị ka ụbọchị 3 na ụbọchị asaa).
Site na ịgbatị oge ọgwụgwọ (dị ka ụbọchị 28), cellulose ether nwere ịdị mma dị elu nwere ike ịga n'ihu na-enye njigide mmiri dị mma na njikọta, na-egosi uto ike kwụsiri ike.
Dịka ọmụmaatụ, n'ime nnwale, ike mkpakọ nke cellulose ethers nwere ịdị mma nke ntupu 80, ntupu 100, na 120 n'ime ụbọchị 28 bụ 25 MPa, 28 MPa, na 30 MPa, n'otu n'otu. Nke a na-egosi na ka mma nke cellulose ether dị elu, ka ike mkpakọ nke ngwa agha na-abawanye.
Ngwa bara uru nke cellulose ether mma kacha mma
1. Gbanwee dị ka ebe ihe owuwu si dị
Mgbe ị na-arụ ọrụ na ebe akọrọ ma ọ bụ n'okpuru ọnọdụ okpomọkụ dị elu, a pụrụ ịhọrọ cellulose ether na ịdị mma dị elu iji mee ka njigide mmiri nke ngwa agha dị elu ma belata ike ọgwụgwụ nke mmiri na-ekpo ọkụ na-akpata.
2. Jiri ya na mgbakwunye ndị ọzọ
Enwere ike iji cellulose ether nwere ịdị mma dị elu na mgbakwunye na ihe mgbakwunye ndị ọzọ (dịka ndị na-ebelata mmiri na ihe ndị na-emepụta ikuku) iji mee ka arụmọrụ nke ngwa agha dịkwuo elu. Dịka ọmụmaatụ, iji mmiri na-ebelata mmiri nwere ike ibelata oke mmiri-ciment ma mee ka njupụta nke ngwa agha dịkwuo elu, ebe cellulose ether na-enye njigide mmiri na mmetụta na-ewusi ike. Nchikota nke abụọ nwere ike ime ka ike nke ngwa agha dịkwuo mma.
3. Optimization nke usoro ihe owuwu
N'oge usoro ihe owuwu ahụ, ọ dị mkpa iji hụ na ether cellulose na-agbaze ma gbasasịa. Enwere ike nweta nke a site n'ịbawanye oge ngwakọta ma ọ bụ iji ngwa ngwakọta kwesịrị ekwesị iji hụ na ejiri mma nke cellulose ether mee ihe n'ụzọ zuru ezu.
Ịdị mma nke cellulose ether nwere mmetụta dị ukwuu na ike nke ngwa agha. Cellulose ether nwere mma dị elu nwere ike rụọ ọrụ nke ọma na njide mmiri, na-eme ka ọ dịkwuo mma ma na-eme ka njikọ interface dịkwuo mma, ma melite ike mmalite na ihe ndị na-arụ ọrụ ogologo oge nke ngwa agha. N'ime ngwa bara uru, ịdị mma nke cellulose ether kwesịrị ịhọrọ nke ọma ma jiri ya dabere na ọnọdụ ihe owuwu a kapịrị ọnụ na ihe achọrọ iji bulie arụmọrụ ngwa agha ma melite ogo ọrụ.
Oge nzipu: Jun-24-2024