HEMC hydroxyethyl methyl selulose inzira yo gukora

HEMC hydroxyethyl methyl selulose inzira yo gukora

Hydroxyethyl methyl selulose HEMC irashobora gukoreshwa nkumuti urinda colloidal, emulisiferi kandi ukwirakwiza bitewe nubuso bwacyo mubisubizo byamazi. Ingaruka za hydroxyethyl methyl selulose kumiterere ya sima. Hydroxyethyl methyl selulose ni ifu yera itagira impumuro nziza, itaryoshye, idafite uburozi bwangirika mumazi akonje kugirango bibe igisubizo kiboneye, gifatika. Hamwe no kubyimba, gufatira hamwe, gutatanya, emulisile, gushiraho firime, guhagarikwa, adsorption, gell, ibikorwa byubutaka, kubika amazi no kurinda colloid, nibindi. Hydroxyethyl methyl selulose yumuti wamazi ufite hydrophilicity nziza kandi nikintu cyiza cyo kubika amazi.

HEMCinzira yo kubyaza umusaruro

Ivumburwa ryerekana uburyo bwo gutegura hydroxyethyl methyl selulose, ikoresha ipamba itunganijwe nkibikoresho fatizo na okiside ya Ethylene nkibikoresho bya etherifyinge yo gutegura hydroxyethyl methyl selulose. Ibikoresho fatizo byo gutegura hydroxyethyl methyl selulose kuburemere ni: toluene na isopropanol ivanze ibice 700 ~ 800 nkibishishwa, ibice 30 ~ 40 amazi, hydroxide ya sodium 70 ~ 80, ipamba itunganijwe ibice 80 ~ 85, okiside ya Ethylene 20 ~ 28 ibice, metani chloride ibice 80 ~ 90, acide glacial acetike ibice 16 ~ 19; Intambwe zihariye nizi zikurikira:

Intambwe yambere nukwongeramo toluene na isopropyl alcool ivanze, amazi, hamwe na hydroxide ya sodium muri keteti ya reaction, ubushyuhe bugera kuri 60 ~ 80 ℃, fata iminota 20 ~ 40;

Intambwe ya kabiri, alkalisation: ibikoresho bikonjeshwa kugeza 30 ~ 50 ℃, ipamba itunganijwe, toluene na isopropyl inzoga ivanze ya solvent spray, vacuum kugeza - 0.006mpa, yuzuyemo azote inshuro 3 gusimbuza, gusimbuza alkalisation, ibihe bya alkalisation: igihe cya alkalisation ni amasaha 2, ubushyuhe bwa alkalisation ni 30 ℃ -50 ℃;

Intambwe ya gatatu, etherification: nyuma ya alkalisation, reaction yakuwe kuri 0.05-0.07mpa, hanyuma okiside ya Ethylene na metani chloride yongerwaho muminota 30-50. Icyiciro cya mbere cya etherification: 40 ~ 60 ℃, 1.0 ~ 2.0Isaha yacu, umuvuduko ugenzurwa hagati ya 0.15 0.3mpa; Icyiciro cya kabiri cya etherification: 60 ~ 90 ℃, amasaha 2.0 ~ 2.5, kugenzura umuvuduko uri hagati ya 0.4- 0.8mpa;

Intambwe ya kane, kutabogama: ongeramo aside glacial acetike yapimye muri reaction ya desolvation hakiri kare, kanda mubikoresho bya etherized kugirango bitabogamye, ubushyuhe buzamuka bugere kuri 75 ~ 80 ℃ kugirango habeho ubutayu, ubushyuhe buzamuka kuri 102 ℃, PH gutahura 6-8 Nukurangiza guseswa; Uzuza 90 ℃ ~ 100 ℃ revers osmose yashizwemo amazi ya robine yatunganijwe mumasafuriya ya dessolubilisation;

Intambwe ya gatanu, gukaraba centrifugal: intambwe ya kane yibikoresho binyuze muri horizontal spiral centrifuge centrifugal gutandukanya, gutandukanya ibikoresho byimuriwe mumazi ashyushye yogejwe mbere yo gukaraba, gukaraba ibikoresho;

Intambwe ya gatandatu, yumisha centrifugal: ibikoresho nyuma yo gukaraba bishyikirizwa byumye binyuze muri horizontal spiral centrifuge, kandi ibikoresho byumye kuri 150 ~ 170 ℃. Ibikoresho byumye birajanjagurwa kandi bipakirwa.

Ugereranije nubuhanga buriho bwo gukora bwa selulose ether, ivumburwa rikoresha okiside ya Ethylene nka agent ya etherification kugirango itegure hydroxyethyl methyl selulose, irimo itsinda rya hydroxyethyl, ifite imbaraga zo kurwanya indwara ya mildew, ihindagurika ryiza ryimyororokere no kurwanya indwara iyo bibitswe igihe kirekire. Irashobora gukoreshwa aho gukoresha izindi selile.