Hoʻohana nui ʻia ka polyanionic cellulose (PAC) e like me ka hoʻohaʻahaʻa ʻana i ka wai, ka hoʻonui viscosity a me ka regulator rheological i ka wai drilling.Hōʻike pōkole kēia pepa i nā kuhikuhi kikoʻī kino a me nā kemika o PAC, e like me ka viscosity, rheology, substitution uniformity, clean and salt viscosity ratio, i hui pū ʻia me nā kuhikuhi noi i ka wai wili.
ʻO ke ʻano molekole kūʻokoʻa o PAC e hōʻike ana i ka hana noi maikaʻi loa i ka wai hou, ka wai paʻakai, ka wai kai a me ka wai paʻakai piha.Ke hoʻohana ʻia e like me ka hoʻohaʻahaʻa filtrate i ka wai wili, hiki i ka PAC ke hoʻomalu i ka wai, a ʻo ka keke lepo i hana ʻia he lahilahi a paʻakikī.Ma ke ʻano he viscosifier, hiki iā ia ke hoʻomaikaʻi koke i ka viscosity ʻikea, plastic viscosity a me ka ikaika shear ikaika o ka wai wili, a hoʻomaikaʻi a hoʻomalu i ka rheology o ka lepo.ʻO kēia mau waiwai noi e pili pono ana i nā indexes kino a me nā kemika o kā lākou huahana.
1. PAC viscosity a me kāna noi i ka wai wili
ʻO PAC viscosity ka ʻano o ka hopena colloidal i hana ʻia ma hope o ka hoʻoheheʻe ʻana i ka wai.He koʻikoʻi ko ka hana rheological o ka solution PAC i kāna noi.ʻO ka viscosity o ka PAC e pili ana i ke kiʻekiʻe o ka polymerization, ka hoʻonā hopena a me ka mahana.ʻO ka mea maʻamau, ʻoi aku ka kiʻekiʻe o ka polymerization, ʻoi aku ka kiʻekiʻe o ka viscosity;Ua hoʻonuiʻia ka viscosity me ka hoʻonuiʻana o ka PAC;E emi ana ka viscosity o ka hoʻonā me ka piʻi ʻana o ka mahana.Hoʻohana pinepine ʻia ka NDJ-79 a i ʻole Brookfield viscometer no ka hoʻāʻo ʻana i ka viscosity i nā kikoʻī kino a me nā kemika o nā huahana PAC.Mālama ʻia ka viscosity o nā huahana PAC e like me nā koi noi.Ke hoʻohana ʻia ʻo PAC ma ke ʻano he tackifier a i ʻole rheological regulator, koi maʻamau ka PAC viscosity kiʻekiʻe (ʻo ke kumu hoʻohālike huahana maʻamau ka pac-hv, pac-r, etc.).Ke hoʻohana nui ʻia ka PAC ma ke ʻano he mea hoʻemi hoʻemi wai a ʻaʻole hoʻonui i ka viscosity o ka wai wili a hoʻololi paha i ka rheology o ka wai wili i ka hoʻohana ʻana, koi ʻia nā huahana PAC viscosity haʻahaʻa (ʻo nā kumu hoʻohālike huahana maʻamau ʻo pac-lv a me pac-l).
Ma ka hoʻohana pono, pili ka rheology o ka wai wili i: (1) ka hiki o ka wai wili ke lawe i nā ʻoki wili a hoʻomaʻemaʻe i ka luawai;(2) Levitation ikaika;(3) Hoʻokūpaʻa i ka hopena ma luna o ka paia lāʻau;(4) Hoʻolālā hoʻolālā o nā ʻāpana wili.Hoʻāʻo pinepine ʻia ka rheology o ka wai wili e 6-wikiwiki rotary viscometer: 600 rpm, 300 rpm, 200 rpm, 100 rpm a me 6 rpm.Hoʻohana ʻia nā heluhelu 3 RPM no ka helu ʻana i ka viscosity i ʻike ʻia, ka viscosity plastic, dynamic shear force a me static shear force, e hōʻike ana i ka rheology o PAC i ka wai wili.Ma ka hihia like, ʻoi aku ka kiʻekiʻe o ka viscosity o ka PAC, ʻoi aku ka kiʻekiʻe o ka viscosity a me ka plastic viscosity, a ʻoi aku ka nui o ka ikaika shear dynamic a me ka ikaika shear static.
Eia kekahi, he nui nā ʻano wai hoʻoheheʻe wai (e like me ka wai hoʻoheheʻe wai hou, ka wai hoʻomaʻamaʻa kemika, ka wai hoʻoheheʻe calcium, ka wai hoʻoheheʻe paʻakai, ka wai wili wai kai, a me nā mea ʻē aʻe), no laila ka rheology o PAC i nā ʻokoʻa. ʻokoʻa nā ʻōnaehana wai wili.No nā ʻōnaehana wai hoʻoheheʻe kūikawā, hiki ke loaʻa kahi ʻokoʻa nui i ka loiloi ʻana i ka hopena i ka wai o ka wai wili wale mai ka viscosity index PAC.No ka laʻana, i loko o ka ʻōnaehana wai hoʻoheheʻe wai kai, ma muli o ke kiʻekiʻe o ka paʻakai, ʻoiai he kiʻekiʻe ka viscosity o ka huahana, ʻo ka haʻahaʻa haʻahaʻa o ka hoʻololi ʻana o ka huahana e alakaʻi i ka haʻahaʻa paʻakai kūʻē o ka huahana, ka hopena i ka hopena o ka viscosity maikaʻi ʻole. o ka huahana i ke kaʻina o ka hoʻohana ʻana, ka hopena o ka viscosity haʻahaʻa haʻahaʻa, haʻahaʻa plastic viscosity a me ka ikaika haʻahaʻa haʻahaʻa haʻahaʻa o ka wai wili, ka hopena i ka hiki ʻole o ka wai wili ke lawe i nā ʻoki wili, hiki ke alakaʻi i ka pipili ʻana i ke koʻikoʻi. hihia.
2.Substitution degere a me ke kūlike o ka PAC a me kāna hana noi i ka wai wili
ʻOi aku ka nui o nā huahana PAC ma mua a i ʻole like me 0.9.Eia nō naʻe, ma muli o nā pono like ʻole o nā mea hana like ʻole, ʻokoʻa ka pae hoʻololi o nā huahana PAC.I nā makahiki i hala iho nei, ua hoʻomaikaʻi mau nā ʻoihana lawelawe aila i nā koi o ka hana noi o nā huahana PAC, a ke piʻi nei ke koi no nā huahana PAC me ke kiʻekiʻe o ka hoʻololi.
ʻO ka pae hoʻololi a me ka like ʻole o ka PAC e pili kokoke ana i ka ratio viscosity paʻakai, kūpaʻa paʻakai a me ka nalowale kānana o ka huahana.ʻO ka mea maʻamau, ʻoi aku ka kiʻekiʻe o ka pae hoʻololi o PAC, ʻoi aku ka maikaʻi o ka hoʻololi like ʻana, a ʻoi aku ka maikaʻi o ka ratio viscosity paʻakai, kūpaʻa paʻakai a me ka kānana ʻana o ka huahana.
Ke hoʻoheheʻe ʻia ka PAC i ka hopena paʻakai inorganic electrolyte ikaika, e emi ana ka viscosity o ka hopena, e hopena i ka hopena paʻakai.ʻO nā ionona maikaʻi i hoʻopaʻa ʻia e ka paʻakai a me - coh2coo - ʻO ka hana a ka hui anion H2O e hōʻemi (a i ʻole e hoʻopau) i ka homoelectricity ma ke kaulahao ʻaoʻao o ka mole PAC.Ma muli o ka lawa ʻole o ka ikaika electrostatic repulsion, PAC molecular chain curls a deforms, a me kekahi mau mea hoʻopaʻa hydrogen ma waena o nā kaulahao molekala i haki, kahi e hoʻopau ai i ka ʻōnaehana spatial kumu a hōʻemi pono i ka viscosity o ka wai.
ʻO ke kūpaʻa paʻakai o ka PAC e ana mau ʻia e ka ratio viscosity ratio (SVR).Ke kiʻekiʻe ka waiwai SVR, hōʻike ka PAC i ke kūpaʻa maikaʻi.ʻO ka mea maʻamau, ʻoi aku ka kiʻekiʻe o ke kiʻekiʻe o ka hoʻololi ʻana a ʻoi aku ka maikaʻi o ke kūlike o ka hoʻololi ʻana, ʻoi aku ka kiʻekiʻe o ka waiwai SVR.
Ke hoʻohana ʻia ʻo PAC ma ke ʻano he mea hoʻohaʻahaʻa kānana, hiki iā ia ke ionize i loko o nā kaulahao multivalent anion i loko o ka wai wili.Hoʻokumu nā pūʻulu o ka hydroxyl a me ka ether oxygen i loko o kāna kaulahao molekala i nā paʻa hydrogen me ka oxygen ma ka ʻili o nā ʻāpana viscosity a i ʻole e hana i nā mea hoʻopaʻa hoʻohui me Al3 + ma ka ʻaoʻao wāwahi o nā mea pālolo, i hiki ke hoʻopili ʻia ka PAC ma ka pālolo;ʻO ka hydration o nā hui sodium carboxylate he mānoanoa i ka hydration film ma ka ʻili o ka pālolo pālolo, pale i ka hōʻuluʻulu ʻana o nā ʻāpana pālolo i loko o nā ʻāpana nui ma muli o ke kuʻi ʻana (pale i ke kāpili), a e hoʻopili ʻia nā mea pālolo maikaʻi he nui ma ke kaulahao molekala o PAC ma ʻO ka manawa like e hana i kahi hui pūnaewele hui ʻia e uhi ana i ka ʻōnaehana holoʻokoʻa, i mea e hoʻomaikaʻi ai i ka paʻa ʻana o ka hui ʻana o nā ʻāpana viscosity, pale i ka ʻike o nā ʻāpana i loko o ka wai wili a hana i ka keke lepo lepo, E hoʻemi i ka kānana.ʻO ke kiʻekiʻe o ke kiʻekiʻe o ka hoʻololi ʻana i nā huahana PAC, ʻoi aku ka kiʻekiʻe o ka ʻike o ka sodium carboxylate, ʻoi aku ka maikaʻi o ka like ʻana o ka hoʻololi ʻana, a ʻoi aku ka ʻoi aku o ka ʻano o ka hydration film, e ʻoi aku ka ikaika o ka hopena pale gel o PAC i ka wai wili, no laila ʻoi aku ka nui. maopopo ka hopena o ka emi ana o ka wai.
3. Maʻemaʻe o PAC a me kāna noi ʻana i ka wai wili
Inā ʻokoʻa ka ʻōnaehana wai wili, ʻokoʻa ke ʻano o ka lāʻau lapaʻau wai wili a me ka mea lapaʻau, no laila ʻokoʻa paha ke ʻano o ka PAC i nā ʻōnaehana wai wili ʻokoʻa.Inā hōʻike ʻia ke ʻano o ka PAC i ka wai wili a loaʻa i ka wai wili i ka rheology maikaʻi a me ka hoʻohaʻahaʻa kānana, hiki ke hoʻokō ʻia ma ka hoʻoponopono ʻana i ka maʻemaʻe.
Ma lalo o nā kūlana like, ʻoi aku ka kiʻekiʻe o ka maʻemaʻe o ka PAC, ʻoi aku ka maikaʻi o ka hana huahana.Eia naʻe, ʻaʻole kiʻekiʻe ka maʻemaʻe o ka PAC me ka hana huahana maikaʻi.Pono e hoʻoholo ʻia ke kaulike ma waena o ka hana huahana a me ka maʻemaʻe e like me ke kūlana maoli.
4. Hoʻohana i ka hana o ka PAC antibacterial a me ka mālama ʻana i ke kaiapuni i ka wai wili
Ma lalo o kekahi mau kūlana, hiki i kekahi mau microorganisms ke hoʻopōʻino i ka PAC, ʻoi aku ma lalo o ka hana a cellulase a me ka peak amylase, ka hopena i ka haki ʻana o ke kaulahao nui o PAC a me ka hoʻokumu ʻana o ke kōpaʻa hoʻohaʻahaʻa, ke emi nei ka degere o ka polymerization, a emi ka viscosity o ka hopena. .ʻO ka hiki ʻana o ka anti enzyme o PAC e hilinaʻi nui ʻia i ka like ʻole o ka hoʻololi ʻana o ka molekala a me ka pae o ka hoʻololi ʻana.ʻO ka PAC me ka hoʻohālikelike hoʻololi maikaʻi a me ke kiʻekiʻe o ka hoʻololi ʻana i ʻoi aku ka maikaʻi o ka hana anti enzyme.ʻO kēia no ka mea hiki i ke kaulahao ʻaoʻao i hoʻopili ʻia e nā koena glucose ke pale i ka decomposition enzyme.
He kiʻekiʻe ke kiʻekiʻe o ka hoʻololi ʻana o ka PAC, no laila he hana antibacterial maikaʻi ka huahana a ʻaʻole e hoʻohua i ka ʻala puʻuwai ma muli o ka fermentation i ka hoʻohana maoli ʻana, no laila ʻaʻohe pono e hoʻohui i nā preservatives kūikawā, kahi kūpono i ke kūkulu ʻana ma ka pūnaewele.
No ka mea, ʻaʻohe mea ʻawaʻawa a maikaʻi ʻole ka PAC, ʻaʻohe ona haumia i ke kaiapuni.Eia kekahi, hiki ke decomposed ma lalo o nā kūlana microbial kūikawā.No laila, maʻalahi ka mālama ʻana i ka PAC i ka wai hoʻoheheʻe ʻōpala, a ʻaʻohe pōʻino i ke kaiapuni ma hope o ka mālama ʻana.No laila, ʻo ka PAC kahi mea hoʻohui maikaʻi maikaʻi loa no ka hoʻoulu ʻana i ka wai.
Ka manawa hoʻouna: Mei-18-2021