Cellulose ether muenzaniso

Cellulose ethermuenzaniso musanganiswa wepolymer wakagadzirwa ne cellulose ine ether chimiro. Yega yega mhete yeglucose mu cellulose macromolecule ine matatu hydroxyl mapoka, yekutanga hydroxyl boka pane yechitanhatu kabhoni atomu, uye yechipiri hydroxyl boka pane yechipiri neyechitatu kabhoni maatomu. Iyo haidrojeni iri muboka rehydroxyl inotsiviwa neboka rehydrocarbon kuita cellulose. Icho chigadzirwa chekutsiviwa kwehydroxyl hydrogen neboka rehydrocarbon mu cellulose polymer. Cellulose i polyhydroxy polymer compound isinganyungudike kana kunyungudika. Cellulose inogona kunyungudutswa mumvura, dilute alkali solution uye organic solvent mushure me etherification, uye ine thermoplastic properties.

Cellulose ether ndiyo nguva yakajairika yekutevedzana kwezvigadzirwa zvinogadzirwa nekuita kwealkali cellulose uye etherifying agent mune mamwe mamiriro. Alkali cellulose inotsiviwa nema etherifying agents akasiyana kuti awane akasiyana cellulose ether.

Zvinoenderana neiyo ionization yezvinhu zvinotsiva, cellulose ethers muenzaniso inogona kukamurwa kuita ionic (senge carboxymethyl cellulose) uye isiri-ionic (senge methyl cellulose) mapoka maviri.

Zvinoenderana nerudzi rwezvinotsiva,cellulose ethersmuenzaniso unogona kukamurwa kuita imwe ether (yakadai semethyl cellulose) uye yakasanganiswa ether (yakadai sehydroxypropyl methyl cellulose). Zvinoenderana nekunyungudika, inogona kukamurwa kuita soluble mumvura (senge hydroxyethyl cellulose) uye organic solvent solubility (senge ethyl cellulose). Dry yakasanganiswa dhaka inonyanya kushandisa mvura-soluble cellulose, iyo inogona kukamurwa kuita inokurumidza-kunyungudika mhando uye inonoke kunyungudika mhando mushure mekurapwa kwepamusoro.

Admixtures inoita basa rakakosha mukuvandudza zvimiro zvevhu rakaoma-yakasanganiswa dhaka uye account inodarika 40% yemutengo wezvinhu mudhaka rakaoma-musanganiswa. Chikamu chakakura chemusanganiswa mumusika wepamba chinopihwa nevagadziri vekunze, uye iyo referensi dosage yechigadzirwa inopihwawo nevatengesi. Nekuda kweizvozvo, mutengo wezvakaoma-musanganiswa zvigadzirwa zvedhaka zvinoramba zvakakwira, uye zvakaoma kuparadzira zvakajairika masonry dhaka uye plastering dhaka nehuwandu hukuru uye nzvimbo yakafara. Zvigadzirwa zvemusika wepamusoro zvinodzorwa nemakambani ekunze, vagadziri vedhaka rakaoma purofiti yakaderera, mutengo wakashata usingakwanisi; Iko kushandiswa kwe admixture kunoshaya kurongeka uye kwakanangwa tsvakiridzo, neupofu tevera maumbirwo ekunze.

Mushandi wekuchengetedza mvura ndiye musanganiswa wakakosha wekuvandudza mashandiro ekuchengetedza mvura yedhaka yakaoma yakasanganiswa uye zvakare imwe yeakakosha musanganiswa kuona mutengo wezvinhu zvedhaka rakaoma rakasanganiswa. Basa guru re cellulose ether kuchengetedza mvura.

Maitiro ekuita kwe cellulose ether mudhaka ndeaya anotevera:

(1) dhaka mu cellulose ether yakanyungudutswa mumvura, nekuti basa rinoshanda rekuona kuti gelled zvinhu zvinobudirira yunifomu kugovera muhurongwa, uye cellulose ether serudzi rwekudzivirira colloid, "package" yakasimba zvimedu, uye nekunze kwayo kuumba dhizaini yekuzora firimu, iyo slurry system yakanyanya kugadzikana, uye zvakare inovandudza musanganiswa weiyo kusanganiswa kwemvura inosanganisa nzira yekuvaka. naizvo.

(2)Cellulose ethermhinduro nokuda kwayo pachayo molecular chimiro maitiro, kuitira kuti mvura mudhaka haisi nyore kurasikirwa, uye zvishoma nezvishoma yakabudiswa munguva yakareba, ichipa dhaka rekuchengetedza mvura yakanaka uye kushanda.