Hydroxyethyl Cellulose Ibintu bifatika na chimique
Imiterere igaragara Iki gicuruzwa cyera kugeza cyoroshye fibrous yumuhondo cyangwa ifu ikomeye, idafite uburozi kandi itaryoshye
Gushonga ingingo 288-290 ° C (dec.)
Ubucucike 0,75 g / mL kuri 25 ° C (lit.)
Gukemuka Kubora mumazi. Kudashonga mumashanyarazi asanzwe. Irashobora gushonga mumazi akonje namazi ashyushye, kandi mubisanzwe ntishobora gushonga mumashanyarazi menshi. Ubukonje burahinduka gato murwego rwa PH agaciro 2-12, ariko ububobere bugabanuka kurenza iyi ntera. Ifite imirimo yo kubyimba, guhagarika, guhambira, kwigana, gutatanya, no kubungabunga ubushuhe. Ibisubizo muburyo butandukanye bwo kwiyegeranya birashobora gutegurwa. Ifite umunyu mwiza udasanzwe kuri electrolytite.
Nka surfactant idafite ionic, hydroxyethyl selulose ifite imitungo ikurikira usibye kubyimba, guhagarika, guhambira, kureremba, gukora firime, gutatanya, kubika amazi no gutanga colloide ikingira:
1.
2. Ntabwo ari ionic kandi irashobora kubana hamwe nandi moko menshi yandi mazi ashonga polymers, surfactants, nu munyu. Nibyimbye byiza bya colloidal kubyibushye cyane bya electrolyte ibisubizo;
3. Ubushobozi bwo gufata amazi bukubye kabiri ubwa methyl selulose, kandi bufite uburyo bwiza bwo gutembera neza.
4. Ugereranije na methyl selulose izwi na hydroxypropyl methyl selulose, ubushobozi bwo gukwirakwiza HEC nububi, ariko ubushobozi bwo gukingira colloid nabwo bukomeye.
Ibisabwa bya tekiniki hamwe nubuziranenge bwa hydroxyethyl selulose
Ibintu: Ironderero risimbuza amavuta (MS) 2.0-2.5 Ubushuhe (%) ≤5 Amazi adashonga (%) ≤0.5 PH agaciro ka 6.0-8.5 Icyuma kiremereye (ug / g) ≤20 Ivu (%) ≤5 Viscosity (mpa. S) 2% 20 solution igisubizo cyamazi 5-60000 kuyobora (%) ≤0.001
Gukoresha hydroxyethyl selulose
. 1
. Irashobora kandi gukoreshwa nkigabanuka ryamazi yo kugabanya amavuta ya sima. Irashobora guhuzwa hamwe nicyuma cya polyvalent ion kugirango ikore gel.
[Koresha 3] Iki gicuruzwa gikoreshwa nka polymeric ikwirakwiza amazi ashingiye kumazi ya gel yamenetse, polystirene na chloride polyvinyl mugucukura amabuye y'agaciro. Irashobora kandi gukoreshwa nkibyimbye bya emuliyoni mu nganda zisiga amarangi, hygrostat mu nganda za elegitoroniki, antimaagulant ya sima hamwe n’umukozi ushinzwe kubika amazi mu nganda zubaka. Inganda zubutaka zometseho hamwe nudupapuro twangiza amenyo. Ikoreshwa kandi cyane mu gucapa no gusiga irangi, imyenda, gukora impapuro, imiti, isuku, ibiryo, itabi, imiti yica udukoko hamwe n’ibikoresho bizimya umuriro.
. Ikoreshwa cyane mubitambaro, fibre, gusiga irangi, gukora impapuro, kwisiga, imiti, imiti yica udukoko, nibindi. Ifite kandi byinshi mubushakashatsi bwamavuta ninganda.
【Koresha 5】 Hydroxyethyl selulose ifite imirimo yibikorwa byo hejuru, kubyimba, guhagarika, guhambira, kwigana, gukora firime, gutatanya, kubika amazi no gutanga uburinzi mubikorwa bya farumasi bikomeye kandi byamazi.
Gukoresha hydroxyethyl selulose
Ikoreshwa muburyo bwububiko, cosmetike, umuti wamenyo, surfactants, umubyimba wa latex, imiti irinda colloidal, amavuta yamenagura amavuta, polystirene na polyvinyl chloride ikwirakwiza, nibindi.
Hydroxyethyl Cellulose Ibikoresho Byumutekano Wibikoresho (MSDS)
1. Igicuruzwa gifite ibyago byo guturika ivumbi. Mugihe ukoresha byinshi cyangwa byinshi, witondere kwirinda guta umukungugu no guhagarikwa mukirere, kandi wirinde ubushyuhe, ibishashi, umuriro n amashanyarazi ahamye. 2. Irinde ifu ya methylcellulose kwinjira no guhuza amaso, kandi wambare masike ya filteri hamwe nindorerwamo z'umutekano mugihe ukora. 3. Ibicuruzwa biranyerera cyane iyo bitose, kandi ifu ya methylcellulose yamenetse igomba guhanagurwa mugihe kandi hagomba gukorwa imiti yo kurwanya kunyerera.
Kubika no gutwara ibintu biranga hydroxyethyl selulose
Gupakira: imifuka yububiko bubiri, igikapu cyo hanze cyuzuye impapuro, igikapu cyimbere ya polyethylene, uburemere bwa 20 kg cyangwa 25kg kumufuka.
Kubika no gutwara: Bika ahantu hafite umwuka kandi wumye mu nzu, kandi witondere ubushuhe. Kurinda imvura nizuba mugihe cyo gutwara.
Uburyo bwo gutegura hydroxyethyl selulose
Uburyo bwa 1: Shira ipamba mbisi cyangwa ifu inoze muri 30% lye, uyikuremo nyuma yigice cyisaha, hanyuma ukande. Kanda kugeza igipimo cyibirimo amazi ya alkali ageze kuri 1: 2.8, hanyuma wimuke mubikoresho byo kumenagura. Shira fibre ya alkali yamenetse mumasafuriya. Gufunga no kwimurwa, byuzuye azote. Nyuma yo gusimbuza umwuka mu isafuriya na azote, kanda mumazi ya Ethylene oxyde. Witondere gukonjesha kuri 25 ° C kuri 2 h kugirango ubone hydroxyethyl selile. Koza ibicuruzwa bitarimo inzoga hanyuma uhindure agaciro ka pH kuri 4-6 wongeyeho aside acike. Ongeramo glyoxal yo guhuza no gusaza, kwoza vuba n'amazi, hanyuma amaherezo ya centrifuge, yumutse, hanyuma usya kugirango ubone hydroxyethyl selulose yumunyu muke.
Uburyo bwa 2: Alkali selulose ni polymer karemano, buri mpeta ya fibre fatizo irimo amatsinda atatu ya hydroxyl, itsinda rya hydroxyl rikora cyane ryakira hydroxyethyl selile. Shira ipamba mbisi cyangwa ifu itunganijwe muri 30% ya soda ya caustic soda, iyikuremo hanyuma ukande nyuma yisaha. Kunyunyuza kugeza igipimo cyamazi ya alkaline kigeze kuri 1: 2.8, hanyuma ujanjagure. Shyira alkali selulose ya salulose mumasafuriya ya reaction, uyifungire, uyikuremo, uyuzuze azote, hanyuma usubiremo vacuumisation na azote yuzuza kugirango usimbuze umwuka mwicyayi. Kanda mumazi ya etilene yabanje gukonjeshwa, shyira amazi akonje mumakoti yikariso ya reaction, hanyuma ugenzure uko byifashe nka 25 ° C mumasaha 2 kugirango ubone selile hydroxyethyl selile. Ibicuruzwa bitarimo amavuta byogejwe n'inzoga, bitagira aho bihuriye na pH 4-6 wongeyeho aside irike, kandi bigahuzwa na glyoxal yo gusaza. Noneho yogejwe namazi, ikabuzwa na centrifugation, yumye kandi igasunikwa kugirango ibone hydroxyethyl selile. Gukoresha ibikoresho bito (kg / t) ipamba cyangwa pompe 730-780 ya soda ya caustic soda (30%) 2400 ya okiside ya Ethylene 900 inzoga (95%) 4500 acide acike 240 glyoxal (40%) 100-300
Hydroxyethyl selulose ni umweru cyangwa umuhondo impumuro nziza, uburyohe kandi bworoshye gutemba, gushonga mumazi akonje namazi ashyushye, mubisanzwe ntibishobora gushonga mumashanyarazi menshi.
Hydroxyethyl selulose (HEC) ni umuhondo wera cyangwa urumuri rwumuhondo, impumuro nziza, fibrous idafite uburozi cyangwa ifu ikomeye, itegurwa na etherification reaction ya alkaline selulose na okiside ya Ethylene (cyangwa chlorohydrin). Nonionic soluble selulose ethers. Kuberako HEC ifite ibyiza byo kubyimba, guhagarika, gutatanya, kwigana, guhuza, gukora firime, kurinda ubushuhe no gutanga colloide ikingira, yakoreshejwe cyane mubushakashatsi bwamavuta, gutwikira, kubaka, ubuvuzi, ibiryo, imyenda, impapuro na polymer Polymerisation n'indi mirima. Igipimo cya mesh 40 mesh 99%; koroshya ubushyuhe: 135-140 ° C; ubucucike bugaragara: 0.35-0.61g / ml; ubushyuhe bwo kubora: 205-210 ° C; umuvuduko wo gutwika buhoro; ubushyuhe buringaniye: 23 ° C; 50% 6% kuri rh, 29% kuri 84% rh.
Nigute wakoresha hydroxyethyl selile
wongeyeho mugihe cyo gukora
1. Ongeramo amazi meza mu ndobo nini ifite imashini ivanze cyane. i
Hydroxyethyl selile
2. Tangira kubyutsa ubudahwema kumuvuduko muke hanyuma ushungure buhoro hydroxyethyl selulose mubisubizo neza. i
3. Komeza kubyutsa kugeza ibice byose byashizwemo. i
4. Noneho ongeramo umukozi urinda inkuba, inyongeramusaruro yibanze nka pigment, infashanyo zo gukwirakwiza, amazi ya amoniya. i
5. Kangura kugeza hydroxyethyl selile yose yasheshwe burundu (viscosity yumuti wiyongera cyane) mbere yo kongeramo ibindi bice muri formula, hanyuma ugasya kugeza ibicuruzwa byarangiye.
Bifite ibikoresho bya alcool
Ubu buryo nugutegura inzoga ya nyina hamwe nibanze cyane, hanyuma ukayongeramo irangi rya latex. Ibyiza byubu buryo nuko bifite ihinduka ryinshi kandi birashobora kongerwaho muburyo butaziguye irangi ryarangiye, ariko bigomba kubikwa neza. Intambwe zisa nintambwe 1-4 muburyo bwa 1, itandukaniro nuko nta mpamvu yo gukanguka kugeza igihe izashirira burundu igisubizo kiboneye.
Igikoma cya fenologiya
Kubera ko ibishishwa kama ari umusemburo muke wa hydroxyethyl selulose, iyi mashanyarazi irashobora gukoreshwa mugutegura igikoma. Imiti ikoreshwa cyane ni ibinyabuzima byamazi nka Ethylene glycol, propylene glycol hamwe nabakora firime (nka Ethylene glycol cyangwa diethylene glycol butyl acetate) muburyo bwo gusiga amarangi. Amazi ya barafu nayo adashobora gukemuka, kubwibyo amazi ya bara akoreshwa kenshi hamwe namazi kama kugirango bategure igikoma. Hydroxyethyl selulose ya poroji irashobora kongerwaho muburyo butaziguye, kandi hydroxyethyl selulose yagabanijwe ikabyimba muri poroji. Iyo wongeyeho irangi, irahita ishonga kandi ikora nkibyimbye. Nyuma yo kongeramo, komeza ubyuke kugeza hydroxyethyl selulose imaze gushonga kandi imwe. Mubisanzwe, poroji ikorwa mukuvanga ibice bitandatu byumusemburo wamazi cyangwa urubura nigice kimwe cya hydroxyethyl selulose. Nyuma yiminota igera kuri 6-30, hydroxyethyl selulose izaba hydrolyz kandi ikabyimba bigaragara. Mu ci, ubusanzwe amazi yubushyuhe buri hejuru cyane, ntabwo rero akwiriye gukoresha poroji.
Kwirinda hydroxyethyl selulose
Kubera ko hydroxyethyl selile yakozwe hejuru yubutaka ari ifu cyangwa selile ikomeye, biroroshye kuyifata no kuyishonga mumazi mugihe ibintu bikurikira byitabwaho. i
1. Mbere na nyuma yo kongeramo hydroxyethyl selulose, igomba guhora ikomeza kugeza igisubizo kiboneye kandi gisobanutse neza. i
2. Igomba guhindurwa buhoro buhoro mu kigega kivanze, ntukongereho mu buryo butaziguye hydroxyethyl selulose cyangwa hydroxyethyl selulose yakoze ibibyimba n'imipira mu kivange. 3. Ubushyuhe bwamazi nagaciro ka PH mumazi bifitanye isano igaragara no gusesa hydroxyethyl selile, bityo rero hagomba kwitabwaho byumwihariko. i
4. Ntukongere ibintu bya alkaline bivanze mbere yuko ifu ya hydroxyethyl selulose ishyuha mumazi. Kuzamura agaciro ka pH nyuma yo gushyuha bizafasha gushonga. i
5. Mugihe gishoboka, ongeramo imiti igabanya ubukana hakiri kare. i
6. Iyo ukoresheje hydroxyethyl selulose ifite ubukana bwinshi, ubunini bwibinyobwa by’ababyeyi ntibigomba kuba hejuru ya 2,5-3%, bitabaye ibyo inzoga za nyina zizagorana kubyitwaramo. Hydroxyethyl selulose nyuma yo kuvurwa mubisanzwe ntabwo byoroshye gukora ibibyimba cyangwa imibumbe, ntanubwo bizakora colloide idashonga nyuma yo kongeramo amazi.
Mubisanzwe bikoreshwa nkibibyimbye, birinda ibintu, bifata, stabilisateur ninyongera mugutegura emulsiyo, jelly, amavuta, amavuta yo kwisiga, koza amaso, suppository na tablet, kandi ikoreshwa nka gel hydrophilique gel nibikoresho bya skeleton 1. Gutegura skeleton- andika imyiteguro irambye. Irashobora kandi gukoreshwa nka stabilisateur mubiryo.
Igihe cyo kohereza: Gashyantare-02-2023