Katundu wa Hydroxyethyl Cellulose
Kaonekedwe kake Katunduyu ndi woyera mpaka wachikasu wopepuka, wokhala ndi ulusi kapena ufa wolimba, wopanda poizoni komanso wopanda kukoma.
Malo osungunuka 288-290 °C (Dec.)
Kuchulukana 0.75 g/mL pa 25 °C (lit.)
Kusungunuka Kusungunuka m'madzi. Sisungunuka m'madzi osungunuka wamba. Sisungunuka m'madzi ozizira ndi madzi otentha, ndipo nthawi zambiri sichisungunuka m'madzi ambiri osungunuka. Kukhuthala kumasintha pang'ono pakati pa PH ndi 2-12, koma kukhuthala kumachepa kupitirira muyeso uwu. Ili ndi ntchito zokhuthala, kuyimitsa, kumangirira, kusakaniza, kufalitsa, ndi kusunga chinyezi. Mayankho osiyanasiyana amatha kukonzedwa. Ali ndi kusungunuka kwa mchere kwabwino kwambiri kwa ma electrolyte.
Monga mankhwala osakhala a ionic surfactant, hydroxyethyl cellulose ili ndi zinthu zotsatirazi kuwonjezera pa kukhuthala, kuyimitsa, kumangirira, kuyandama, kupanga filimu, kufalitsa, kusunga madzi ndi kupereka ma colloids oteteza:
1. HEC imasungunuka m'madzi otentha kapena m'madzi ozizira, kutentha kwambiri kapena kuwira popanda mvula, kotero kuti imakhala ndi mitundu yosiyanasiyana ya kusungunuka ndi kukhuthala, komanso gelation yosatentha;
2. Siyokhudzana ndi ayoni ndipo imatha kukhala limodzi ndi ma polima ena ambiri osungunuka m'madzi, ma surfactants, ndi mchere. Ndi chokhuthala chabwino kwambiri cha colloidal cha mayankho a electrolyte okhala ndi kuchuluka kwakukulu;
3. Mphamvu yosungira madzi ndi yowirikiza kawiri kuposa ya methyl cellulose, ndipo ili ndi kayendedwe kabwino ka madzi.
4. Poyerekeza ndi methyl cellulose yodziwika bwino ndi hydroxypropyl methyl cellulose, mphamvu yobalalitsira ya HEC ndiyo yoyipa kwambiri, koma mphamvu yoteteza ya colloid ndiyo yamphamvu kwambiri.
Zofunikira zaukadaulo ndi miyezo yabwino ya hydroxyethyl cellulose
Zinthu: Kusinthira kwa molar index (MS) 2.0-2.5 Chinyezi (%) ≤5 Madzi osasungunuka (%) ≤0.5 Mtengo wa PH 6.0-8.5 Chitsulo cholemera (ug/g) ≤20 Phulusa (%) ≤5 Kukhuthala (mpa. s) 2% 20 ℃ yankho lamadzi 5-60000 lead (%) ≤0.001
Kugwiritsa ntchito hydroxyethyl cellulose
【Gwiritsani ntchito 1】Yogwiritsidwa ntchito ngati surfactant, latex thickener, colloidal protective agent, oil exploration fracturing fluid, polystyrene ndi polyvinyl chloride dispersant, ndi zina zotero.
[Gwiritsani Ntchito 2] Imagwiritsidwa ntchito ngati chokhuthala komanso chochepetsera kutayika kwa madzi m'madzi obowola ndi madzi omalizidwa, ndipo imakhala ndi mphamvu yodziwikiratu yokhuthala m'madzi obowola amchere. Ingagwiritsidwenso ntchito ngati chochepetsera kutayika kwa madzi m'malo osungira mafuta. Ikhoza kulumikizidwa ndi ma ayoni achitsulo a polyvalent kuti ipange gel.
[Gwiritsani Ntchito 3] Chogulitsachi chimagwiritsidwa ntchito ngati chosungunula cha polymeric cha madzi opangidwa ndi gel fracturing fluid, polystyrene ndi polyvinyl chloride mu migodi yosungunula. Chingagwiritsidwenso ntchito ngati emulsion thickener mu makampani opanga utoto, hygrostat mu makampani opanga zamagetsi, simenti yoletsa magazi kuundana komanso chosunga chinyezi mumakampani opanga zomangamanga. Chophimba mano ndi chopangira mano cha mafakitale a ceramic. Chimagwiritsidwanso ntchito kwambiri posindikiza ndi kupaka utoto, nsalu, kupanga mapepala, mankhwala, ukhondo, chakudya, ndudu, mankhwala ophera tizilombo komanso zozimitsira moto.
[Gwiritsani Ntchito 4] Amagwiritsidwa ntchito ngati surfactant, colloidal protective agent, emulsification stabilizer ya vinyl chloride, vinyl acetate ndi emulsions zina, komanso viscosifier, dispersant, ndi dispersion stabilizer ya latex. Amagwiritsidwa ntchito kwambiri popaka, ulusi, utoto, kupanga mapepala, zodzoladzola, mankhwala, mankhwala ophera tizilombo, ndi zina zotero. Amagwiritsidwanso ntchito zambiri pofufuza mafuta ndi makina.
【Ntchito 5】Hydroxyethyl cellulose ili ndi ntchito zogwira ntchito pamwamba, kukhuthala, kuyimitsa, kumangirira, kusakaniza, kupanga filimu, kufalitsa, kusunga madzi ndi kupereka chitetezo mu mankhwala olimba ndi amadzimadzi.
Kugwiritsa ntchito hydroxyethyl cellulose
Amagwiritsidwa ntchito popanga zodzoladzola, zodzoladzola, mankhwala otsukira mano, zinthu zosungunulira zinthu, zokhuthala za latex, zoteteza ku colloidal, madzi ophwanyika mafuta, zotulutsa polystyrene ndi polyvinyl chloride, ndi zina zotero.
Pepala la Deta Yotetezera Zinthu za Hydroxyethyl Cellulose (MSDS)
1. Chogulitsachi chili ndi chiopsezo cha kuphulika kwa fumbi. Mukachigwira chochuluka kapena chochuluka, samalani kuti fumbi lisalowe mumlengalenga, ndipo sungani kutali ndi kutentha, zipsera, malawi ndi magetsi osasinthasintha. 2. Pewani ufa wa methylcellulose kuti usalowe ndi kukhudza maso, ndipo valani zophimba nkhope ndi magalasi oteteza mukamagwiritsa ntchito. 3. Chogulitsachi chimakhala choterera kwambiri chikanyowa, ndipo ufa wa methylcellulose womwe watayika uyenera kutsukidwa nthawi yake ndipo chithandizo choletsa kutsetsereka chiyenera kuchitika.
Makhalidwe osungira ndi mayendedwe a hydroxyethyl cellulose
Kulongedza: Matumba awiri, thumba la pepala lakunja lopangidwa ndi zinthu zosiyanasiyana, thumba la filimu ya polyethylene yamkati, kulemera konse kwa 20kg kapena 25kg pa thumba lililonse.
Kusunga ndi mayendedwe: Sungani pamalo opumira mpweya komanso ouma m'nyumba, ndipo samalani ndi chinyezi. Chitetezo cha mvula ndi dzuwa panthawi yoyendera.
Njira yokonzekera hydroxyethyl cellulose
Njira 1: Zilowerereni thonje losaphika kapena madzi oyeretsedwa mu 30% lye, litulutseni patatha theka la ola, ndikukanikiza. Kanikizani mpaka chiŵerengero cha madzi a alkali chifike pa 1:2.8, ndikusunthira ku chipangizo chophwanyira kuti muphwanyire. Ikani ulusi wa alkali wophwanyidwa mu ketulo yoyankhira. Yatsekedwa ndikutuluka, yodzazidwa ndi nayitrogeni. Mukasintha mpweya mu ketulo ndi nayitrogeni, kanikizani mu madzi ozizira a ethylene oxide. Yambani pansi pa kuzizira pa 25°C kwa maola awiri kuti mupeze crude hydroxyethyl cellulose. Tsukani chinthu chosaphika ndi mowa ndikusintha pH kukhala 4-6 powonjezera acetic acid. Onjezani glyoxal kuti mulumikizane ndi kukalamba, sambani mwachangu ndi madzi, ndipo potsiriza centrifuge, pukutani, ndikupukuta kuti mupeze hydroxyethyl cellulose yamchere yochepa.
Njira 2: Alkali cellulose ndi polima wachilengedwe, mphete iliyonse ya ulusi imakhala ndi magulu atatu a hydroxyl, gulu la hydroxyl lomwe limagwira ntchito kwambiri limachitapo kanthu kuti lipange hydroxyethyl cellulose. Zilowerereni thonje losaphika kapena zamkati zoyengedwa mu 30% yamadzimadzi a caustic soda, zichotseni ndikukanikiza patatha theka la ola. Finyani mpaka chiŵerengero cha madzi a alkaline chifike pa 1:2.8, kenako phwanyani. Ikani alkali cellulose yophwanyidwa mu ketulo yochitirapo kanthu, itsekeni, ikani vacuum, idzazani ndi nayitrogeni, ndikubwerezanso vacuumization ndi kudzaza nayitrogeni kuti mulowetse mpweya mu ketulo. Kanikizani mumadzimadzi a ethylene oxide omwe adaziziritsidwa kale, ikani madzi ozizira mu jekete la ketulo yochitirapo kanthu, ndikulamulira momwe zinthuzo zimachitikira pa 25°C kwa maola awiri kuti mupeze crude hydroxyethyl cellulose. Chogulitsa chosaphika chimatsukidwa ndi mowa, chosinthidwa kukhala pH 4-6 powonjezera acetic acid, ndikulumikizidwa ndi glyoxal kuti chikhale chokalamba. Kenako imatsukidwa ndi madzi, kusungunuka ndi centrifugation, kuumitsa ndi kupukutidwa kuti ipeze hydroxyethyl cellulose. Kugwiritsa ntchito zinthu zosaphika (kg/t) thonje kapena zamkati zochepa 730-780 madzi caustic soda (30%) 2400 ethylene oxide 900 mowa (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose ndi ufa woyera kapena wachikasu wopanda fungo, wopanda kukoma komanso wosavuta kuyenda, wosungunuka m'madzi ozizira ndi madzi otentha, nthawi zambiri susungunuka m'zinthu zambiri zachilengedwe.
Hydroxyethyl cellulose (HEC) ndi yoyera kapena yachikasu chopepuka, yopanda fungo, yopanda poizoni, yolimba ngati ulusi kapena ufa, yomwe imakonzedwa ndi etherification reaction ya alkaline cellulose ndi ethylene oxide (kapena chlorohydrin). Ma ether a cellulose osungunuka a Nonionic. Chifukwa HEC ili ndi mphamvu zabwino zokhuthala, kuyimitsa, kufalitsa, kusakaniza, kulumikiza, kupanga filimu, kuteteza chinyezi ndikupereka colloid yoteteza, yagwiritsidwa ntchito kwambiri pakufufuza mafuta, zokutira, zomangamanga, mankhwala, chakudya, nsalu, mapepala ndi polima Polymerization ndi minda ina. 40 mesh sieving rate ≥ 99%; kutentha kofewa: 135-140°C; apparent density: 0.35-0.61g/ml; kutentha kwa kuwonongeka: 205-210°C; pang'onopang'ono kutentha; kutentha kofanana: 23°C; 50% 6% pa rh, 29% pa 84% rh.
Momwe mungagwiritsire ntchito hydroxyethyl cellulose
yowonjezedwa mwachindunji panthawi yopangira
1. Onjezani madzi oyera mu chidebe chachikulu chokhala ndi chosakanizira chodula kwambiri.
Hydroxyethyl cellulose
2. Yambani kusakaniza mosalekeza pa liwiro lotsika ndipo pang'onopang'ono sefa hydroxyethyl cellulose mu yankho mofanana.
3. Pitirizani kusakaniza mpaka tinthu tonse titanyowa.
4. Kenako onjezerani choteteza mphezi, zowonjezera monga utoto, zothandizira kufalikira, madzi a ammonia.
5. Sakanizani mpaka hydroxyethyl cellulose yonse itasungunuka kwathunthu (kukhuthala kwa yankho kumawonjezeka kwambiri) musanawonjezere zigawo zina mu fomula, ndipo pukutani mpaka chinthu chomalizidwa.
Yokhala ndi mowa wotsekemera
Njira iyi ndi yokonzekera mowa wa mayi ndi kuchuluka kwakukulu kaye, kenako nkuuwonjezera pa utoto wa latex. Ubwino wa njira iyi ndi wakuti uli ndi kusinthasintha kwakukulu ndipo ukhoza kuwonjezeredwa mwachindunji ku utoto womalizidwa, koma uyenera kusungidwa bwino. Masitepewo ndi ofanana ndi Masitepe 1-4 mu Njira 1, kusiyana kwake ndikuti palibe chifukwa chosakaniza mpaka utasungunuka kwathunthu kukhala yankho lolimba.
Phala la phenology
Popeza zosungunulira zachilengedwe sizili bwino pa hydroxyethyl cellulose, zosungunulira zachilengedwezi zingagwiritsidwe ntchito pokonzekera phala. Zosungunulira zachilengedwe zomwe zimagwiritsidwa ntchito kwambiri ndi zakumwa zachilengedwe monga ethylene glycol, propylene glycol ndi zopanga filimu (monga ethylene glycol kapena diethylene glycol butyl acetate) mu utoto. Madzi oundana nawonso ndi zosungunulira zopanda bwino, kotero madzi oundana nthawi zambiri amagwiritsidwa ntchito pamodzi ndi zakumwa zachilengedwe pokonzekera phala. Hydroxyethyl cellulose ya phala ikhoza kuwonjezeredwa mwachindunji ku utoto, ndipo hydroxyethyl cellulose yagawidwa ndikufufuma mu phala. Ikawonjezeredwa ku utoto, imasungunuka nthawi yomweyo ndikugwira ntchito ngati chokhuthala. Mukawonjezera, pitirizani kusakaniza mpaka hydroxyethyl cellulose itasungunuka kwathunthu ndikufanana. Kawirikawiri, phala limapangidwa posakaniza magawo asanu ndi limodzi a organic solvent kapena madzi oundana ndi gawo limodzi la hydroxyethyl cellulose. Patatha mphindi pafupifupi 6-30, hydroxyethyl cellulose imasungunuka ndi kutupa moonekeratu. M'chilimwe, kutentha kwa madzi nthawi zambiri kumakhala kwakukulu kwambiri, kotero sikoyenera kugwiritsa ntchito phala.
Chenjezo pa hydroxyethyl cellulose
Popeza hydroxyethyl cellulose yokonzedwa pamwamba ndi ufa kapena cellulose yolimba, ndi yosavuta kuigwira ndikuisungunula m'madzi bola ngati zinthu zotsatirazi zikutsatiridwa.
1. Musanawonjezere hydroxyethyl cellulose komanso mutatha kuisakaniza, iyenera kusunthidwa mosalekeza mpaka yankholo litawonekera bwino komanso loyera.
2. Iyenera kusefedwa pang'onopang'ono mu thanki yosakanizira, musawonjezere mwachindunji kuchuluka kwa hydroxyethyl cellulose kapena hydroxyethyl cellulose yomwe yapanga mikwingwirima ndi mipira mu thanki yosakanizira. 3. Kutentha kwa madzi ndi PH m'madzi zimaonekeratu kuti zimagwirizana ndi kusungunuka kwa hydroxyethyl cellulose, kotero chisamaliro chapadera chiyenera kuperekedwa.
4. Musawonjezere zinthu zina zamchere mu chisakanizocho musanatenthetse ufa wa hydroxyethyl cellulose kudzera m'madzi. Kukweza pH pambuyo potentha kungathandize kusungunuka.
5. Momwe mungathere, onjezerani mankhwala oletsa bowa mwamsanga momwe mungathere.
6. Mukagwiritsa ntchito hydroxyethyl cellulose yokhala ndi kukhuthala kwakukulu, kuchuluka kwa mowa wa mayi sikuyenera kupitirira 2.5-3%, apo ayi mowa wa mayi udzakhala wovuta kuugwiritsa ntchito. Hyxyethyl cellulose yomwe yakonzedwa pambuyo pake nthawi zambiri siimakhala yosavuta kupanga ziphuphu kapena ma sphere, komanso sipanga ma colloid osasungunuka mukamawonjezera madzi.
Kawirikawiri imagwiritsidwa ntchito ngati chokhuthala, choteteza, chomatira, chokhazikika komanso chowonjezera pokonzekera emulsion, jelly, mafuta odzola, lotion, chotsukira maso, suppository ndi piritsi, komanso imagwiritsidwa ntchito ngati hydrophilic gel ndi zinthu za mafupa. 1. Kukonzekera mankhwala opangidwa ngati mafupa omwe amatulutsidwa nthawi zonse. Ingagwiritsidwenso ntchito ngati chokhazikika mu chakudya.
Nthawi yotumizira: Feb-02-2023