Hydroxyethyl cellulose imhando ye cellulose ether ine viscosity iri pakati nepakati kusvika pakakwirira, inoshandiswa sechinosimbisa uye chinosimbisa machira akavakirwa mumvura, kunyanya kana viscosity yekuchengetera iri yakakwira uye viscosity yekushandisa iri shoma. Cellulose ether iri nyore kupararira mumvura inotonhora ine pH ≤ 7, asi iri nyore kuungana mumvura ine alkaline ine pH ≥ 7.5, saka tinofanira kutarisisa kupararira kwe cellulose ether.
Zvimiro uye mashandisirwo ehydroxyethyl cellulose:
1. Mushonga wekudzivirira mvura usingashandisi maenzayimu unodzivirira maenzayimu, unogona kushandiswa mumhando dzakasiyana dzepH (PH=2-12).
2. Zviri nyore kuparadzira, zvinogona kuwedzerwa zvakananga muchimiro cheupfu hwakaoma kana muchimiro cheslurry pakukuya pigments nefillers.
3. Kugadzirwa kwakanaka kwazvo. Ine zvakanakira zvekuchengetedza mari, haisi nyore kudonhedza nekurembera, uye inodzivirira kupwanyika kwemvura zvakanaka.
4. Inoenderana zvakanaka nemarudzi akasiyana-siyana emasurfactants uye zvinochengetedza zvinoshandiswa mupendi yelatex.
5. Kuchengetedzwa kwechinhu kwakasimba, izvo zvinogona kudzivirira kuderera kwehuremu hwependi yelatex nekuda kwekuora kwema enzymes mu hydroxyethyl cellulose.
Hunhu hweHydroxyethyl Cellulose
Hydroxyethyl cellulose ether ipolymer isinganyungudike mumvura. Iupfu huchena kana hweyero hwakareruka hunoyerera zviri nyore. Kazhinji hahunyungudike muzvinhu zvakawanda zvinonyungudutsa.
1. HEC inonyungudika mumvura inopisa kana mvura inotonhora, uye hainyungudike kana yapisa zvakanyanya kana kufashaira, izvo zvinoita kuti ive nemhando dzakasiyana-siyana dzekunyungudika uye kunaka, uye isingapisi.
2. Haina ionic uye inogona kushanda pamwe chete nemamwe mapolymer anonyungudika mumvura, masurfactants, uye munyu. Ichinhu chinosimbisa colloidal zvakanaka chekugadzirisa zvine maelectrolyte ane concentration yakawanda.
3. Kugona kuchengetedza mvura kwakapetwa kaviri pane kwemethyl cellulose, uye ine kurongeka kuri nani kwekuyerera kwemvura.
4. Zvichienzaniswa ne methyl cellulose inozivikanwa uye hydroxypropyl methyl cellulose, kugona kweHEC kuparadzira ndiko kwakaipisisa, asi kugona kwekudzivirira colloid ndiko kwakasimba (kune mavara).
Kukora
Zvinokanganisa mashandiro, zvakaita se: kugona kupfava, kuramba kupfapfaidza, kuramba kurasikirwa; chimiro chakakosha chenetwork che cellulose ether chinogona kudzikamisa upfu mu coating system, kunonotsa kugadzikana kwayo, uye kuita kuti system iwane kuchengetedzwa kuri nani.
Kudzivirira mvura zvakanaka
Kana firimu rependi rangooma zvachose, rinova nekudzivirira mvura kwakanyanya. Izvi zvinonyanya kuratidza kukosha kwekudzivirira mvura kwaro muchimiro chePVC chakakwira. Kubva kune dzimwe nyika kusvika kune dzechiChinese, muchimiro ichi chePVC chakakwira, huwandu hwe cellulose ether inowedzerwa hunenge 4-6‰.
kuchengetedza mvura zvakanaka
Hydroxyethyl cellulose inogona kuwedzera nguva yekusviba uye kudzora nguva yekuoma kuti iwane kuumbwa kwakanaka kwefirimu; pakati pazvo, kuchengetwa kwemvura kwemethyl cellulose nehypromellose kunoderera zvakanyanya pamusoro pe40°C, uye zvimwe zvidzidzo zvekune dzimwe nyika zvinotenda kuti inogona kuderedzwa ne50%, mukana wematambudziko muzhizha uye tembiricha yakakwira unowedzera zvakanyanya.
Kugadzikana kwakanaka kuderedza kuyerera kwependi
Bvisa sedimentation, syneresis uye flocculation; panguva imwe chete, hydroxyethyl cellulose ether imhando yezvigadzirwa zvisiri zveionic. Haisanganisike nezvimwe zvinhu zvakasiyana-siyana zviri musystem.
Kuenderana kwakanaka nehurongwa hwemavara akawanda
Kuenderana kwakanaka kwemavara, pigments uye fillers; hydroxyethyl cellulose ether ine ruvara rwakanakisisa, asi mushure mekuchinja, senge methyl ne ethyl, pachava nenjodzi dzakavanzika dzekuenderana kwepigment.
Kuenderana kwakanaka nezvinhu zvakasiyana-siyana
Inogona kushandiswa mumhando dzakasiyana dzekugadzira machira.
Basa guru rekurwisa utachiona
Yakakodzera masisitimu e silicate
Nguva yekutumira: Kukadzi-02-2023