Maitiro ekugadzira uye kushandiswa kwemhando dzakasiyana dze sodium carboxymethyl cellulose (CMC)

Sodium carboxymethyl cellulose (CMC) i anionic, straight chain, water-soluble cellulose ether, inobva mu natural cellulose uye chloroacetic acid ne chemical modification. Mvura yayo ine mabasa ekukora, kugadzira firimu, kubatana, kuchengetedza mvura, kudzivirira colloidal, emulsification uye suspension, uye inogona kushandiswa se flocculant, chelating agent, emulsifier, thickener, water retaining agent, size agent, film forming material, nezvimwewo, iyo inoshandiswa zvakanyanya mukudya, mishonga, zvemagetsi, mishonga yezvipembenene, dehwe, mapurasitiki, kudhinda, ceramics, indasitiri yemakemikari yezuva nezuva nedzimwe nzvimbo.

Sodium carboxymethyl cellulose inowanzova chinhu chakasimba chine upfu, dzimwe nguva chine granular kana fibrous, chena kana yero yakajeka muruvara, haina hwema hwakasiyana, ikemikari yakakura, inogona kunyorova, inogona kunyungudika mumvura, mumvura kuti igadzire mhinduro ine viscous yakajeka. Hainyungudike mumhinduro dzeorganic, dzakadai seethanol, ether, chloroform uye benzene, asi inogona kunyungudika mumvura, inonyungudika zvakananga mumvura inononoka, asi kunyungudika kuchiri kukuru, uye mhinduro yemvura ine viscosity yakati. Yakasimba munzvimbo yese yakajairika yakagara yakasimba, nekuti ine mvura uye hunyoro hwakati, munzvimbo yakaoma, inogona kuchengetedzwa kwenguva yakareba.

① Maitiro ekugadzira

1. Nzira yemvura inoyerera

Maitiro ekugadzira marasha emvura ibasa rinoitwa kare mukugadzirwa kwe sodium carboxymethyl cellulose mumaindasitiri. Mukuita uku, alkali cellulose uye etherifying agent zvinosangana mumvura ine free oxygen oxide ions, uye mvura inoshandiswa senzira yekubatsira mukuita kwe reaction, pasina organic solvents.

2. Nzira yekunyungudutsa

Nzira yekunyungudutsa imhando yeorganic solvent, inova nzira yekugadzira yakagadzirwa zvichibva panzira yemvura inotsiva mvura neorganic solvent senzira yereaction. Maitiro ealkalization uye etherification yealkali cellulose nemonochloroacetic acid muorganic solvent. Zvichienderana nehuwandu hwereaction medium, inogona kukamurwa kuita nzira yekukanya uye nzira yekushambira. Huwandu hweorganic solvent hunoshandiswa munzira yepulping hwakakura kupfuura hwenzira yekukanya, uye huwandu hweorganic solvent hunoshandiswa munzira yekukanya ichiyero chehuremu hwehuwandu hwecellulose, nepo huwandu hweorganic solvent hunoshandiswa munzira yepulping ichiyero chehuremu hwehuwandu hwecellulose. Kana sodium carboxymethyl cellulose yagadzirwa nenzira yeswimming slurry, reaction solid inenge iri muslurry kana suspension state musystem, saka nzira yeswimming slurry inonziwo nzira yesuspension.

3. Nzira yekutsvedza

Nzira yeSlurry ndiyo tekinoroji yazvino yekugadzira sodium carboxymethyl cellulose. Nzira yeSlurry haingogone chete kugadzira sodium carboxymethyl cellulose yakachena, asiwo kugadzira sodium carboxymethyl cellulose ine mwero wepamusoro wekutsiva uye imwe nzira yekutsiva. Maitiro ekugadzira nzira yeSlurry ndeaya anotevera: donje rakakuyiwa kuita upfu rinotumirwa kumuchina wealkalizing wakagadzikwa neisopropyl alcohol, uye sodium hydroxide solution inowedzerwa panguva yekusanganisa inoiswa alkali, uye tembiricha yealkalizing inenge 20℃. Mushure mealkalizing, zvinhu zvinopombwa kumuchina wealkalizing wakagadzikwa, uye mhinduro yechloroacetic acid yeisopropyl alcohol inowedzerwa, uye tembiricha yealkalizing inenge 65℃. Zvichienderana nezvinodiwa zvekushandiswa kwechigadzirwa uye zvemhando, huwandu hwealkalizing, nguva yealkalizing, huwandu hweetherifying agent nenguva ye etherification nezvimwe zvinhu zvinogona kugadziriswa.

② Chiyero chekushandisa

1. CMC haisi chete chinhu chinosimbisa uye chinosimbisa chikafu zvakanaka, asiwo ine kugadzikana kwakanaka kwechando nekunyunguduka, uye inogona kuvandudza kunaka kwechigadzirwa uye kuwedzera nguva yekuchengetedza.

2. Muchinwiwa chinobvisa tsvina, CMC inogona kushandiswa semushonga wekubvisa tsvina, kunyanya muchimiro che hydrophobic synthetic fiber jira rekudzivirira kusvibiswa, zviri nani kupfuura carboxymethyl fiber.

3. Mukuchera mafuta, matsime emafuta anogona kushandiswa kuchengetedza matsime emafuta semushonga wekuchengetedza matope, muchina wekuchengetedza mvura, huwandu hwetsime rega rega remafuta i2 ~ 3t. Matsime asina kudzika, matsime akadzika 5 ~ 6t.

4. Inoshandiswa muindasitiri yemachira semushonga wekuisa saizi, kudhinda nekudhaya slurry thickener, kudhinda kwemachira uye kupedzisa kuomarara.

5. Inoshandiswa semushonga unodzivirira kugadzika, emulsifier, dispersant, leveling agent, namatidza, inogona kuita kuti chikamu chakasimba chependi chiparadzirwe zvakaenzana mumusanganiswa, kuitira kuti pendi isaparadzwe kwenguva yakareba, asi inoshandiswawo muputty.

6. Semushonga wekubvisa calcium ions, sodium gluconate inoshanda zvakanyanya, semuchina wekuchinjana cation, kugona kwekutsinhana kunosvika 1.6ml/g.

7. Muindasitiri yemapepa inoshandiswa semushonga wekuisa saizi yemapepa, inogona kuvandudza zvakanyanya simba rakaoma uye kusimba kwemvura kwekudzivirira mapepa nemafuta, kunyudzwa kweinki uye kusimba kwemvura.

8. Semushonga we hydrosol muzvizoro, unoshandiswa semushonga wekukora mumazino emazino, muyero wawo unenge 5%.

Mugadziri uye Mutengesi weCarboxymethyl Cellulose (CMC) wekutengesa | EVERBRIGHT (cnchemist.com)