Polyanionic cellulose (PAC) inonyanya kushandiswa semvura kurasikirwa inoderedza, viscosity enhancer uye rheological regulator mukuchera mvura.Iri bepa rinotsanangura muchidimbu iwo makuru emuviri nemakemikari indexes ePAC, akadai seviscosity, rheology, substitution uniformity, kuchena uye munyu viscosity ratio, yakasanganiswa nemaindex ekushandisa mumvura yekuchera.
Iyo yakasarudzika yemamorekuru chimiro chePAC inoita kuti iratidze kuita kwakanakisa kwekushandisa mumvura yakachena, mvura yemunyu, mvura yegungwa uye yakazadzwa mvura yemunyu.Kana ichishandiswa sesefa inodzikisira mumvura yekuchera, PAC ine simba rekudzora kurasikirwa kwemvura, uye keke rematope rakagadzirwa rakatetepa uye rakaomarara.Seviscosifier, inogona kukurumidza kuvandudza iyo inooneka viscosity, epurasitiki viscosity uye ine simba shear simba rekuchera mvura, uye kugadzirisa nekudzora rheology yematope.Izvi zvivakwa zvekushandisa zvine hukama zvakanyanya kune emuviri uye makemikari indexes ezvigadzirwa zvavo.
1. PAC viscosity uye kushandiswa kwayo mukuchera mvura
PAC viscosity hunhu hwecolloidal solution inoumbwa mushure mekunyungudika mumvura.Iyo rheological maitiro ePAC mhinduro ine yakakosha pesvedzero pakushandiswa kwayo.Iyo viscosity yePAC ine hukama nedhigirii repolymerization, kugadziriswa kwemhinduro uye tembiricha.Kazhinji kutaura, iyo yakakwirira dhigirii yepolymerization, iyo yakakwirira viscosity;Iyo viscosity yakawedzera nekuwedzera kwePAC concentration;Mhinduro viscosity inoderera nekuwedzera kwekushisa.NDJ-79 kana Brookfield viscometer inowanzo shandiswa kuyedza viscosity mune emuviri uye kemikari indexes yePAC zvigadzirwa.Iyo viscosity yePAC zvigadzirwa inodzorwa zvinoenderana nezvinodiwa zvekushandisa.Kana PAC inoshandiswa setackifier kana rheological regulator, high viscosity PAC inowanzodiwa (chigadzirwa chemuenzaniso chinowanzonzi pac-hv, pac-r, nezvimwewo).Kana PAC ichinyanya kushandiswa semvura inoderedza kurasikirwa uye isingawedzere kupenya kwemvura yekuchera kana kushandura rheology yemvura yekuchera iri kushandiswa, yakaderera viscosity PAC zvigadzirwa zvinodikanwa (mamodeli echigadzirwa anowanzo pac-lv uye pac-l).
Mukushandiswa kunoshanda, rheology yekuchera mvura inobatana ne: (1) kukwanisa kwemvura yekuchera kutakura kucheka kwekucheka uye kuchenesa tsime;(2) Simba rekuregererwa;(3) Kudzikamisa mhedzisiro pamadziro e shaft;(4) Optimization dhizaini yekuchera paramita.Rheology yekuchera mvura inowanzoedzwa ne6-speed rotary viscometer: 600 rpm, 300 rpm, 200 rpm, 100 rpm uye 6 rpm.3 RPM kuverenga kunoshandiswa kuverenga inooneka viscosity, plastiki viscosity, dynamic shear simba uye static shear simba, iyo inoratidza rheology yePAC mukuchera mvura.Muchiitiko chimwe chetecho, kukwirisa viscosity yePAC, ndiko kukwira kuri kuita viscosity uye plastiki viscosity, uye kukura kwesimba rekugera uye simba rekugera.
Pamusoro pezvo, kune marudzi akawanda emvura yekuchera-yakavakirwa mvura (senge mvura yakachena yekuchera mvura, kemikari yekuchenesa mvura yekuchera, calcium yekurapa yekuchera fluid, saline yekuchera mvura, yegungwa yekuchera mvura, nezvimwewo), saka rheology yePAC mune zvakasiyana. drilling fluid masisitimu akasiyana.Kune yakakosha masisitimu emvura yekuchera, panogona kuve nekutsauka kukuru pakuongorora kukanganisa kwemvura yekuchera mvura kubva kune viscosity index yePAC.Semuenzaniso, mumvura yegungwa yekuchera mvura yemvura, nekuda kwehuwandu hwemunyu, kunyange zvazvo chigadzirwa chacho chine viscosity yakakwirira, iyo yakaderera dhigirii yekutsiviwa kwechigadzirwa inotungamirira kune yakaderera munyu kuramba kwechigadzirwa, zvichikonzera kuti hurombo husina kunaka huwedzere. chechigadzirwa chiri mukushandiswa kwekushandiswa, zvichikonzera kuderera kunoonekwa, kuderera kwepurasitiki viscosity uye yakaderera dynamic shear simba remvura yekuchera, zvichikonzera kusakwanisa kwemvura yekuchera kutakura zvicherwa zvekuchera, izvo zvinogona kutungamira mukunamatira kwakakomba. nyaya.
2.Substitution degree uye kufanana kwePAC uye kushanda kwayo kwekushanda mumvura yekuchera
Iyo yekutsiva dhigirii rezvigadzirwa zvePAC kazhinji yakakura kupfuura kana kuenzana ne0.9.Nekudaro, nekuda kwezvinodiwa zvakasiyana zvevagadziri vakasiyana, iyo yekutsiva dhigirii yePAC zvigadzirwa zvakasiyana.Mumakore achangopfuura, makambani ebasa remafuta akaramba achivandudza mashandisirwo ekuita zvinodiwa zvePAC zvigadzirwa, uye kudiwa kwezvigadzirwa zvePAC zvine dhigirii yakakwira yekutsiva kuri kuwedzera.
Iyo yekutsiva dhigirii uye kufanana kwePAC kune hukama zvakanyanya nemunyu viscosity ratio, munyu kuramba uye kurasikirwa kwekusefa kwechigadzirwa.Kazhinji, kukwirisa dhigirii rekutsinhanisa rePAC, kunowedzera kufanana kwekutsiva, uye zviri nani kutaridzika kwemunyu, kuramba munyu uye kusefa kwechigadzirwa.
Kana PAC yakanyungudika mune yakasimba electrolyte inorganic munyu mhinduro, viscosity yemushonga inodzikira, zvichikonzera iyo inonzi munyu mhedzisiro.Iwo ayoni akanaka ionized nemunyu uye - coh2coo - Kuita kweH2O anion group kunoderedza (kana kutobvisa) homoelectricity padivi pecheni yePAC molecule.Nekuda kwekusakwana electrostatic repulsion simba, PAC molecular cheni curls uye deforms, uye mamwe mahydrogen zvisungo pakati pemamorekuru cheni anotsemuka, ayo anoparadza yekutanga nzvimbo chimiro uye akanyatso kudzikisa viscosity yemvura.
Kuramba kwemunyu kwePAC kunowanzoyerwa nesalt viscosity ratio (SVR).Kana kukosha kweSVR kwakakwira, PAC inoratidza kugadzikana kwakanaka.Kazhinji, iyo yakakwirira dhigirii yekutsiva uye zvirinani kufanana kwekutsiva, kunowedzera kukosha kweSVR.
Kana PAC ichishandiswa sefiltrate reducer, inogona ionize kuita refu-chain multivalent anions mukuchera mvura.Mapoka ehydroxyl uye ether okisijeni mumaketani ayo anoita hydrogen zvisungo zvine okisijeni pamusoro pezvimedu zve viscosity kana kuumba zvisungo zvekubatanidza neAl3 + pachisungo chinotyoka chezvimedu zvevhu, kuitira kuti PAC inogona kushambadzwa pavhu;Iko hydration yeakawanda sodium carboxylate mapoka anokora iyo hydration firimu pamusoro pevhu, inodzivirira kuunganidzwa kwevhu kuita zvidimbu zvihombe nekuda kwekudhumhana (kuchengetedzeka kweglue), uye akawanda akatsetseka zvidimbu zvevhu anozoshambadzirwa pane molecular cheni yePAC pa. panguva imwe chete kuumba yakavhenganiswa netiweki chimiro chinofukidza hurongwa hwese, kuitira kuti uvandudze kugadzikana kwekugadzika kweviscosity particles, kudzivirira zviri mukati mezvimedu mukuchera mvura uye kuumba dense dope keke, Deredza kusefa.Iyo yakakwira dhigirii yekutsiviwa kwezvigadzirwa zvePAC, iyo inokwirisa zvirimo sodium carboxylate, zviri nani kufanana kwekutsiva, uye iyo yakawanda yunifomu iyo hydration firimu, iyo inosimbisa iyo gel kudzivirira maitiro ePAC mukuchera mvura, saka zvakanyanya. pachena mhedzisiro yekuderedza kurasikirwa kwemvura.
3. Kuchena kwePAC uye kushandiswa kwayo mumvura yekuchera
Kana iyo yekuchera fluid system yakasiyana, dosage yekuchera mvura yekurapa mumiriri uye mumiririri wekurapa akasiyana, saka dosage yePAC mumasisitimu ekuchera emvura akasiyana anogona kunge akasiyana.Kana iyo dosage yePAC mukuchera mvura yakatsanangurwa uye mvura yekuchera ine yakanaka rheology uye kuderedzwa kwefiltration, inogona kuwanikwa nekugadzirisa kuchena.
Pasi pemamiriro akafanana, iyo yakakwirira kuchena kwePAC, zviri nani kuita chigadzirwa.Nekudaro, kuchena kwePAC nekuita kwakanaka kwechigadzirwa hakuna kunyanya kukwira.Chiyero pakati pekuita kwechigadzirwa uye kuchena kunoda kutariswa zvinoenderana nemamiriro chaiwo.
4. Kushanda kwekushandiswa kwePAC antibacterial uye kuchengetedza kwezvakatipoteredza mukuchera mvura
Mune mamwe mamiriro ezvinhu, mamwe ma microorganisms achaita kuti PAC iparare, kunyanya pasi pekuita kwe cellulase uye peak amylase, zvichikonzera kuputsika kwePAC main chain uye kuumbwa kwekudzikisa shuga, dhigirii repolymerization rinoderera, uye viscosity yemhinduro inoderera. .Iyo anti enzyme kugona kwePAC inonyanya kuenderana neiyo molecular inotsiva kufanana uye dhigirii rekutsiva.PAC ine yakanaka yekutsiva yakafanana uye yakakwirira dhigirii yekutsiva ine zvirinani anti enzyme performance.Izvi zvinodaro nekuti cheni yepadivi yakabatanidzwa nemasara eglucose inogona kudzivirira kuparara kwe enzyme.
Iyo yekutsiva dhigirii yePAC yakakwira zvakanyanya, saka chigadzirwa chine yakanaka antibacterial performance uye haizoburitsa kunhuhwirira kwakaora nekuda kwekuvirisa mukushandiswa chaiko, saka hapana chikonzero chekuwedzera zvakakosha zvinodzivirira, izvo zvinobatsira pakuvaka-panzvimbo.
Nekuti PAC haina chepfu uye haina kukuvadza, haina kusvibisa nharaunda.Mukuwedzera, inogona kuparara pasi pemamiriro chaiwo ehutachiona.Naizvozvo, zviri nyore kurapa PAC mumarara ekuchera mvura, uye haina njodzi kune zvakatipoteredza mushure mekurapwa.Naizvozvo, PAC yakanakisa kuchengetedza kwezvakatipoteredza kuchera mvura yekuwedzera.
Nguva yekutumira: May-18-2021