Polyanionic cellulose (PAC) ana amfani dashi galibi azaman mai rage asarar ruwa, mai haɓaka danko da mai sarrafa rheological a cikin hakowa.Wannan takarda a taƙaice ta bayyana ainihin ma'auni na zahiri da sinadarai na PAC, kamar danko, rheology, daidaituwar canji, tsabta da ɗankowar gishiri, haɗe tare da fihirisar aikace-aikacen a cikin hakowa.
Tsarin kwayoyin halitta na musamman na PAC ya sa ya nuna kyakkyawan aikin aikace-aikace a cikin ruwa mai dadi, ruwan gishiri, ruwan teku da cikakken ruwan gishiri.Lokacin da aka yi amfani da shi azaman mai rage tacewa a cikin ruwa mai hakowa, PAC yana da ingantaccen ikon sarrafa asarar ruwa, kuma cake ɗin da aka kafa yana da bakin ciki kuma mai tauri.A matsayin viscosifier, zai iya sauri inganta danko na fili, danko filastik da ƙarfin karfi na hako ruwa, da ingantawa da sarrafa rheology na laka.Waɗannan kaddarorin aikace-aikacen suna da alaƙa ta kut da kut da fihirisar zahiri da sinadarai na samfuran su.
1. PAC danko da aikace-aikace a cikin hakowa ruwa
Dankowar PAC shine halayyar maganin colloidal da aka kafa bayan narkar da ruwa.Halin rheological na maganin PAC yana da tasiri mai mahimmanci akan aikace-aikacen sa.Dankowar PAC yana da alaƙa da matakin polymerization, ƙaddamar da bayani da zafin jiki.Gabaɗaya magana, mafi girman digiri na polymerization, mafi girman danko;Danko ya karu tare da karuwar PAC maida hankali;Maganin danko yana raguwa tare da karuwar yawan zafin jiki.NDJ-79 ko Brookfield viscometer yawanci ana amfani dashi don gwada danko a cikin ma'auni na zahiri da sinadarai na samfuran PAC.Ana sarrafa dankon samfuran PAC bisa ga buƙatun aikace-aikacen.Lokacin da aka yi amfani da PAC azaman tackifier ko mai sarrafa rheological, ana buƙatar babban danko PAC yawanci (samfurin yawanci pac-hv, pac-r, da sauransu).Lokacin da aka fi amfani da PAC azaman mai rage asarar ruwa kuma baya ƙara ɗanƙoƙin hakowa ko canza rheology na hakowa a amfani, ana buƙatar samfuran PAC kaɗan (samfurin yawanci pac-lv da pac-l).
A aikace aikace, rheology na hakowa ruwa yana da alaƙa da: (1) ikon hako ruwa don ɗaukar yankan hakowa da tsaftace rijiyar;(2) Ƙarfin Lewi;(3) Tasirin daidaitawa akan bangon shaft;(4) Haɓaka ƙira na sifofin hakowa.A rheology na hako ruwa yawanci ana gwada ta 6-gudun rotary viscometer: 600 rpm, 300 rpm, 200 rpm, 100 rpm da 6 rpm.Ana amfani da karatun RPM 3 don ƙididdige ɗanƙon da yake gani, dankowar filastik, ƙarfin ƙarfi mai ƙarfi da ƙarfi mai ƙarfi, waɗanda ke nuna rheology na PAC a cikin hakowa.A cikin irin wannan yanayin, mafi girman danko na PAC, mafi girman bayyanar danko da dankowar filastik, kuma mafi girman ƙarfin juzu'i da ƙarfin juzu'i.
Bugu da kari, akwai nau'ikan ruwan hakowa da yawa (kamar ruwan hako ruwa mai dadi, ruwan hako ruwan sinadarai, ruwan hakowa na sinadarin calcium, ruwan hako ruwan gishiri, ruwan hako ruwan teku, da sauransu), don haka rheology na PAC daban-daban. tsarin hakowa ya bambanta.Don tsarin ruwa mai hakowa na musamman, ana iya samun babban sabani wajen kimanta tasirin ruwa na hakowa kawai daga ma'aunin danko na PAC.Misali, a cikin tsarin hako ruwan teku, saboda babban abun ciki na gishiri, kodayake samfurin yana da danko mai yawa, ƙarancin maye gurbin samfurin zai haifar da ƙarancin juriya na gishiri na samfurin, wanda ke haifar da ƙarancin danko yana ƙaruwa. na samfurin a cikin aiwatar da amfani, yana haifar da ƙananan danko na fili, ƙananan ƙarancin filastik da ƙananan ƙarfin ƙarfi na ruwa mai hakowa, wanda ya haifar da rashin ƙarfi na ruwa mai hakowa don ɗaukar yankan hakowa, wanda zai iya haifar da danko a cikin tsanani. lokuta.
2.Substitution digiri da uniformity na PAC da aikace-aikace yi a hako ruwa
Matsayin maye gurbin samfuran PAC yawanci ya fi ko daidai da 0.9.Koyaya, saboda buƙatun daban-daban na masana'antun daban-daban, matakin maye gurbin samfuran PAC ya bambanta.A cikin 'yan shekarun nan, kamfanonin sabis na mai sun ci gaba da haɓaka buƙatun aikin aikace-aikacen samfuran PAC, kuma buƙatun samfuran PAC tare da babban canji yana ƙaruwa.
Digiri na musanya da daidaito na PAC suna da alaƙa da alaƙa da ƙimar dankon gishiri, juriyar gishiri da asarar tacewa na samfur.Gabaɗaya, mafi girman matakin maye gurbin PAC, mafi kyawun daidaituwar maye gurbin, kuma mafi kyawun ƙimar ɗankowar gishiri, juriyar gishiri da tace samfuran.
Lokacin da aka narkar da PAC a cikin maganin gishiri mai ƙarfi na electrolyte inorganic, dankon maganin zai ragu, yana haifar da abin da ake kira tasirin gishiri.Ingantattun ions da gishiri da - coh2coo - Ayyukan H2O anion group yana rage (ko ma yana kawar da) homoelectricity akan sashin gefen kwayoyin PAC.Saboda rashin isassun ƙarfin tunkuɗewar wutar lantarki, PAC kwayoyin sarkar curls da deforms, da kuma wasu hydrogen bond tsakanin kwayoyin halitta karya, wanda ya lalata asalin sararin samaniya tsarin da musamman rage danko na ruwa.
Yawan juriyar gishiri na PAC ana auna ta ta hanyar rabon dankon gishiri (SVR).Lokacin da ƙimar SVR ta yi girma, PAC yana nuna kwanciyar hankali mai kyau.Gabaɗaya, mafi girman matakin maye da mafi kyawun daidaiton maye, mafi girman ƙimar SVR.
Lokacin da aka yi amfani da PAC azaman mai rage tacewa, zai iya ionize zuwa cikin dogon sarkar anions a cikin hakowa ruwa.A hydroxyl da ether oxygen kungiyoyin a cikin kwayoyin sarkar samar hydrogen bond tare da oxygen a saman danko barbashi ko samar da daidaituwa bond tare da Al3 + a kan bond karya gefen lãka barbashi, sabõda haka, PAC za a iya adsorbed a kan yumbu;A hydration na mahara sodium carboxylate kungiyoyin thickens da hydration fim a kan saman lãka barbashi, hana aggregation na yumbu barbashi cikin manyan barbashi saboda karo (manne kariya), da kuma mahara lafiya lãka barbashi za a adsorbed a kan wani kwayoyin sarkar na PAC a. lokaci guda don samar da wani gauraye cibiyar sadarwa tsarin rufe dukan tsarin, don haka kamar yadda don inganta tara kwanciyar hankali na danko barbashi, kare abun ciki na barbashi a hakowa ruwa da kuma samar da m laka cake, Rage tacewa.Mafi girman matakin maye gurbin samfuran PAC, mafi girman abun ciki na sodium carboxylate, mafi kyawun daidaiton maye gurbin, kuma mafi daidaituwar fim ɗin hydration, wanda ke sa tasirin kariya na gel ɗin PAC ya fi ƙarfin hako ruwa, don haka ƙari. bayyananne sakamakon raguwar asarar ruwa.
3. Tsaftar PAC da aikace-aikacen sa a cikin ruwa mai hakowa
Idan tsarin ruwan hakowa ya bambanta, adadin ma'aunin jiyya na hakowa da wakilin jiyya sun bambanta, don haka adadin PAC a cikin tsarin ruwan hakowa daban-daban na iya bambanta.Idan an ƙayyade adadin PAC a cikin ruwa mai hakowa kuma ruwan hakowa yana da rheology mai kyau da raguwar tacewa, ana iya samun ta ta hanyar daidaita tsafta.
Ƙarƙashin yanayi guda ɗaya, mafi girman tsabtar PAC, mafi kyawun aikin samfurin.Koyaya, tsabtar PAC tare da kyakkyawan aikin samfur ba lallai bane yayi girma.Ma'auni tsakanin aikin samfur da tsabta yana buƙatar ƙaddara bisa ga ainihin halin da ake ciki.
4. Ayyukan aikace-aikacen PAC antibacterial da kare muhalli a cikin hakowa ruwa
A karkashin wasu yanayi, wasu ƙananan ƙwayoyin cuta za su sa PAC su lalace, musamman a ƙarƙashin aikin cellulase da peak amylase, wanda ya haifar da karaya na babban sarkar PAC da samuwar rage sukari, matakin polymerization yana raguwa, kuma dankowar maganin yana raguwa. .Ikon rigakafin enzyme na PAC ya dogara ne akan daidaituwar canjin kwayoyin halitta da matakin maye gurbin.PAC tare da ingantaccen daidaituwar musanya da babban matakin maye yana da mafi kyawun aikin antienzyme.Wannan shi ne saboda sarkar gefen da ke da alaƙa da ragowar glucose na iya hana rushewar enzyme.
Matsayin maye gurbin PAC yana da girma sosai, don haka samfurin yana da kyakkyawan aikin ƙwayoyin cuta kuma ba zai haifar da ƙamshi ba saboda fermentation a ainihin amfani, don haka babu buƙatar ƙara abubuwan kiyayewa na musamman, waɗanda ke dacewa da ginin kan layi.
Saboda PAC ba mai guba ba ce kuma mara lahani, ba ta da gurɓata muhalli.Bugu da ƙari, ana iya bazuwa a ƙarƙashin ƙayyadaddun yanayin ƙananan ƙwayoyin cuta.Sabili da haka, yana da sauƙi a bi da PAC a cikin ruwa mai hakowa, kuma ba shi da lahani ga muhalli bayan magani.Don haka, PAC kyakkyawan ƙari ne mai kariyar muhalli.
Lokacin aikawa: Mayu-18-2021