Hydroxyethyl Cellulose Thepa ea 'Mele le ea Lik'hemik'hale
Ponahalo ea thepa Sehlahisoa sena se bosoeu ho isa ho bosehla bo bobebe kapa bo tiileng ba phofo, ha bo chefo ebile ha bo na tatso
Sebaka sa ho qhibiliha 288-290 °C (Dec.)
Boima ba 0.75 g/mL ho 25 °C(lit.)
Ho qhibiliha ha metsi. Ha e qhibilihe ka har'a metsoako e tloaelehileng ea tlhaho. E qhibiliha metsing a batang le metsing a chesang, 'me ka kakaretso ha e qhibilihe ka har'a metsoako e mengata ea tlhaho. The viscosity e fetoha hanyenyane ho palo ea PH ea 2-12, empa viscosity e fokotseha ho feta mefuta ena. E na le mesebetsi ea ho tenya, ho emisa, ho tlama, ho etsa emulsifying, ho hasanya le ho boloka mongobo. Litharollo ka mekhahlelo e fapaneng ea viscosity li ka lokisoa. E na le ho qhibiliha ha letsoai ka mokhoa o ikhethang bakeng sa li-electrolyte.
Joalo ka sehlahisoa se seng sa ionic, hydroxyethyl cellulose e na le lintho tse latelang ntle le ho tenya, ho emisa, ho tlama, ho phaphamala, ho etsa filimi, ho qhalakanya, ho boloka metsi le ho fana ka li-colloid tse sireletsang:
1. HEC e qhibiliha ka metsing a chesang kapa a batang, mocheso o phahameng kapa ho belisa ntle le pula, e le hore e be le mefuta e mengata ea ho qhibiliha le litšoaneleho tsa viscosity, le gelation e se nang mocheso;
2. Ha e na ionic 'me e ka phela hammoho le mefuta e mengata e mengata ea li-polymers tse qhibilihang ka metsing, li-surfactants, le letsoai. Ke colloidal thickener e babatsehang bakeng sa tharollo ea electrolyte e phahameng haholo;
3. Matla a ho boloka metsi a phahame ka makhetlo a mabeli ho feta a methyl cellulose, 'me a na le taolo e ntle ea ho phalla.
4. Ha ho bapisoa le methyl cellulose e tsejoang le hydroxypropyl methyl cellulose, bokhoni ba ho qhalakanngoa ba HEC ke bo bobe ka ho fetisisa, empa matla a tšireletso a colloid a matla ka ho fetisisa.
Litlhoko tsa tekheniki le litekanyetso tsa boleng ba hydroxyethyl cellulose
Lintho: Index molar substitution (MS) 2.0-2.5 Mongobo (%) ≤5 Metsi a sa tsitsang (%) ≤0.5 PH boleng 6.0-8.5 tšepe e boima (ug / g) ≤20 Ash (%) ≤5 Viscosity (mpa. s) 2% 20 ℃ tharollo ea metsi 5-60000 lead (%) ≤0.001
Tšebeliso ea hydroxyethyl cellulose
【Sebelisa 1】 E sebelisoa e le surfactant, latex thickener, colloidal protection agent, exploration fracturing fluid, polystyrene le polyvinyl chloride dispersant, joalo-joalo.
[Sebelisa 2] E sebelisoa e le sekontiri se teteaneng le se fokotsang tahlehelo ea mokelikeli bakeng sa maro a ho cheka a thehiloeng metsing le maro a phethoang, 'me e na le phello e totobetseng ea ho teteana marong a brine. E ka boela ea sebelisoa e le mokelikeli tahlehelo e fokotsang bakeng sa oli seliba samente. E ka kopanngoa le li-ion tsa tšepe tse nang le polyvalent ho etsa gel.
[Sebelisa 3] Sehlahisoa sena se sebelisoa e le dispersant ea polymeric bakeng sa metsi a thehiloeng ho gel fracturing fluid, polystyrene le polyvinyl chloride meepong ea fracturing. E ka boela ea sebelisoa e le emulsion thickener indastering ea pente, hygrostat indastering ea elektronike, anticoagulant ea samente le moemeli oa ho boloka mongobo indastering ea kaho. Ho belisoa ha indasteri ea ceramic le setlama sa sesepa sa meno. E boetse e sebelisoa haholo ho hatisa le ho daea, masela, ho etsa pampiri, meriana, bohloeki, lijo, lisakerete, chefo e bolaeang likokoanyana le lintho tse timang mollo.
[Sebelisa 4] E sebelisoa e le surfactant, colloidal protective agent, emulsification stabilizer bakeng sa vinyl chloride, vinyl acetate le li-emulsions tse ling, hammoho le viscosifier, dispersant, le dispersion stabilizer bakeng sa latex. E sebelisoa haholo ho tlotsa, likhoele, ho daea, ho etsa pampiri, litlolo, meriana, chefo e bolaeang likokoanyana, joalo-joalo. E boetse e sebelisoa haholo indastering ea ho hlahloba oli le metjhini.
【Sebelisa 5】 Hydroxyethyl cellulose e na le ts'ebetso ea ts'ebetso ea holim'a metsi, e teteaneng, e emisang, e tlamang, e emulsifying, ho etsa filimi, ho qhalakanya, ho boloka metsi le ho fana ka tšireletso litokisong tse tiileng tsa meriana le tsa metsi.
Lisebelisoa tsa hydroxyethyl cellulose
E sebelisoa ho litlolo tsa meralo, litlolo, sesepa sa meno, li-surfactants, li-latex thickeners, li-colloidal protective agents, maro a fracturing ea oli, polystyrene le polyvinyl chloride dispersants, joalo-joalo.
Leqephe la Boitsebiso ba Tšireletso ea Sesebelisuoa sa Hydroxyethyl Cellulose (MSDS)
1. Sehlahisoa se na le kotsi ea ho phatloha ha lerōle. Ha u sebetsana le bongata kapa ka bongata, ela hloko ho qoba ho roala lerōle le ho fanyeha moeeng, 'me u qobe mocheso, litlhase, malakabe le motlakase o sa fetoheng. 2. Qoba phofo ea methylcellulose ho kena le ho kopana le mahlo, 'me u roale limaske tsa filthara le likhalase tsa tšireletso nakong ea ts'ebetso. 3. Sehlahisoa se thella haholo ha se le metsi, 'me phofo ea methylcellulose e tšolotsoeng e lokela ho hloekisoa ka nako le phekolo e khahlanong le ho thella e lokela ho etsoa.
Litšobotsi tsa polokelo le lipalangoang tsa hydroxyethyl cellulose
Ho paka: mekotla e nang le mekhahlelo e 'meli, mokotla oa pampiri o kopantsoeng ka ntle, mokotla oa filimi oa polyethylene o ka hare, boima ba net 20kg kapa 25kg mokotla ka mong.
Polokelo le lipalangoang: Boloka sebakeng se nang le moea oa moea le se omileng ka tlung, 'me u ele hloko mongobo. Tšireletso ea pula le letsatsi nakong ea lipalangoang.
Mokhoa oa ho itokisa oa hydroxyethyl cellulose
Mokhoa oa 1: Kenya lithara tse tala tsa k'hothone kapa makhasi a hloekisitsoeng ka har'a 30% ea lye, e ntše ka mor'a halofo ea hora, 'me u hatelle. Tobetsa ho fihlela karo-karolelano ea metsi a alkali e fihla ho 1: 2.8, 'me u tsamaee ho sesebelisoa sa ho senya bakeng sa ho senya. Kenya fiber e sithabetseng ea alkali ka har'a ketlele ea karabelo. E tiisitsoe le ho tlosoa, e tlatsitsoe ka naetrojene. Ka mor'a hore u nkele moea ka ketlele sebaka ka naetrojene, tobetsa mokelikeli oa ethylene oxide o pholileng. Etsa tlas'a pholileng ka 25°C bakeng sa 2 h ho fumana hydroxyethyl cellulose. Hlatsoa sehlahisoa se tala ka joala 'me u fetole boleng ba pH ho 4-6 ka ho eketsa acetic acid. Eketsa glyoxal bakeng sa ho hokahanya le botsofali, hlatsoa kapele ka metsi, 'me qetellong centrifuge, omisa,' me u sila ho fumana selulose e tlaase ea letsoai la hydroxyethyl.
Mokhoa oa 2: Alkali cellulose ke polymer ea tlhaho, selikalikoe se seng le se seng sa fiber se na le lihlopha tse tharo tsa hydroxyl, sehlopha se sebetsang ka ho fetisisa sa hydroxyl se arabela ho theha hydroxyethyl cellulose. Kenya lithara tse tala tsa k'hothone kapa makhasi a hloekisitsoeng ka har'a 30% ea metsi a caustic soda, e ntše 'me u e hatelle ka mor'a halofo ea hora. Penya ho fihlela karo-karolelano ea metsi a alkaline e fihla ho 1: 2.8, ebe o silakanya. Beha selulose e entsoeng ka alkali ka har'a ketlele, e tiise, u e hloekise, u e tlatse ka naetrojene, 'me u phete vacuumization le naetrojene ho fetola moea ka ketlele ka ho feletseng. Tobetsa ka har'a mokelikeli o pholileng oa ethylene oxide, kenya metsi a pholileng ka har'a baki ea ketlele, 'me u laole karabelo e ka bang 25°C bakeng sa lihora tse 2 ho fumana hydroxyethyl cellulose. Sehlahisoa se tala se hlatsuoa ka joala, se fokotsehile ho pH 4-6 ka ho eketsa asiti ea acetic, 'me e hokahane le glyoxal bakeng sa botsofali. Ebe e hlatsuoa ka metsi, e felloa ke metsi ka centrifugation, e omisitsoe mme e hloekisitsoe ho fumana hydroxyethyl cellulose. Tšebeliso ea lintho tse tala (kg/t) linters tsa k'hothone kapa makhasi a tlaase 730-780 metsi a caustic soda (30%) 2400 ethylene oxide 900 joala (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose ke phofo e tšoeu kapa e mosehla, e sa nkheng, e sa latsoeheng ebile e phalla habonolo, e qhibilihisoa metsing a batang le metsing a chesang, hangata e sa qhibiliheng ka har'a metsoako e mengata ea tlhaho.
Hydroxyethyl cellulose (HEC) ke bosehla bo bosoeu kapa bo bobebe, bo se nang monko, bo se nang chefo kapa bo tiileng, bo lokisoang ke karabelo ea etherification ea alkaline cellulose le ethylene oxide (kapa chlorohydrin). Nonionic soluble cellulose ethers. Hobane HEC e na le thepa e ntle ea ho teteka, ho emisa, ho qhala, emulsifying, ho kopanya, ho etsa filimi, ho sireletsa mongobo le ho fana ka colloid e sireletsang, e 'nile ea sebelisoa haholo ho hlahloba oli, ho roala, ho haha, meriana, lijo, masela, pampiri le polymerization le masimo a mang. 40 letlooeng sieving sekhahla ≥ 99%; mocheso o bonolo: 135-140 ° C; boima bo bonahalang: 0.35-0.61g / ml; mocheso oa ho senyeha: 205-210 ° C; lebelo le liehang la ho chesa; tekano mocheso: 23 ° C; 50% 6% ho rh, 29% ho 84% rh.
Mokhoa oa ho sebelisa hydroxyethyl cellulose
e kenyellelitsoe ka kotloloho nakong ea tlhahiso
1. Kenya metsi a hloekileng ka nkhong e kholo e nang le motsoako o phahameng oa ho kuta. the
Hydroxyethyl cellulose
2. Qala ho sisinyeha ka ho tsoelang pele ka lebelo le tlaase 'me butle-butle u sefa hydroxyethyl cellulose ka tharollo e lekanang. the
3. Tsoela pele ho hlohlelletsa ho fihlela likaroloana tsohle li kolobile. the
4. Ebe u eketsa moemeli oa tšireletso ea lehalima, li-additives tsa motheo tse kang li-pigments, lithuso tsa ho hasana, metsi a ammonia. the
5. Hlohlelletsa ho fihlela cellulose eohle ea hydroxyethyl e qhibiliha ka ho feletseng (viscosity ea tharollo e eketseha haholo) pele u eketsa likarolo tse ling ka foromo, 'me u sila ho fihlela sehlahisoa se felile.
Ho hlomelloa ka joala ba 'm'e
Mokhoa ona ke ho lokisa joala ba 'm'e ka khatello e phahameng pele, ebe o e eketsa penteng ea latex. Molemo oa mokhoa ona ke hore o na le phetoho e kholoanyane 'me e ka kenyelletsoa ka ho toba penteng e phethiloeng, empa e lokela ho bolokoa hantle. Mehato e ts'oana le Mehato ea 1-4 ho Method 1, phapang ke hore ha ho hlokahale ho hlohlelletsa ho fihlela e qhibiliha ka ho feletseng ka tharollo ea viscous.
motoho bakeng sa phenology
Kaha li-solvents e le lihlapolli tse futsanehileng tsa hydroxyethyl cellulose, metsoako ena ea tlhaho e ka sebelisoa ho lokisa motoho. Litlhapi tse sebelisoang ka ho fetisisa ke li-organic liquids tse kang ethylene glycol, propylene glycol le li-formers tsa lifilimi (tse kang ethylene glycol kapa diethylene glycol butyl acetate) ha ho etsoa pente. Metsi a leqhoa le ona ha a na solvent, kahoo metsi a leqhoa a atisa ho sebelisoa hammoho le lino tse phelang ho lokisa motoho. Selulose ea hydroxyethyl ea poro e ka kenngoa ka ho toba penteng, 'me cellulose ea hydroxyethyl e arotsoe' me ea ruruha ka har'a motoho. Ha e kenngoa penteng, e qhibiliha hang-hang 'me e sebetsa e le motenya. Ka mor'a ho eketsa, tsoela pele ho hlohlelletsa ho fihlela hydroxyethyl cellulose e qhibiliha ka ho feletseng 'me e tšoana. Ka kakaretso, motoho o etsoa ka ho kopanya likarolo tse tšeletseng tsa motsoako oa motsoako kapa metsi a leqhoa le karolo e le 'ngoe ea hydroxyethyl cellulose. Kamora metsotso e ka bang 6-30, selulose ea hydroxyethyl e tla be e entsoe ka hydrolyzed mme e ruruhe ho hlakile. Lehlabuleng, mocheso oa metsi hangata o phahame haholo, kahoo ha hoa lokela ho sebelisa motoho.
Litlhokomelo bakeng sa hydroxyethyl cellulose
Kaha hydroxyethyl cellulose e entsoeng ka holim'a metsi ke phofo kapa cellulose e tiileng, ho bonolo ho e tšoara le ho e qhaqha ka metsing hafeela lintho tse latelang li lebisoa tlhokomelo ho tsona. the
1. Pele le ka mor'a ho eketsa hydroxyethyl cellulose, e tlameha ho tsosoa ka ho tsoelang pele ho fihlela tharollo e hlakile ka ho feletseng le e hlakileng. the
2. E tlameha ho kenngoa butle-butle ka har'a tanka ea ho kopanya, u se ke ua eketsa ka ho toba palo e kholo ea hydroxyethyl cellulose kapa hydroxyethyl cellulose e entseng makukuno le libolo ka har'a tanka ea ho kopanya. 3. Mocheso oa metsi le boleng ba PH metsing li na le kamano e totobetseng le ho qhibiliha ha hydroxyethyl cellulose, kahoo tlhokomelo e khethehileng e tlameha ho lefshoa. the
4. U se ke ua kenya lintho tse ling tsa alkaline motsoako pele phofo ea hydroxyethyl cellulose e futhumala ka metsing. Ho phahamisa boleng ba pH ka mor'a ho futhumala ho tla thusa ho qhibiliha. the
5. Ka hohle kamoo ho ka khonehang, eketsa moemeli oa anti-fungal kapele kamoo ho ka khonehang. the
6. Ha u sebelisa high-viscosity hydroxyethyl cellulose, mahloriso a joala ba 'mè ha aa lokela ho ba holimo ho 2.5-3%, ho seng joalo joala ba' mè bo tla ba thata ho sebetsana le bona. Hydroxyethyl cellulose ka mor'a ho phekoloa hangata ha e bonolo ho etsa makukuno kapa lilika-likoe, ebile e ke ke ea theha li-colloid tse chitja tse sa tsitsang ka mor'a ho eketsa metsi.
Ka kakaretso e sebelisoa e le motenya, moemeli oa tšireletso, sekhomaretsi, stabilizer le addititive bakeng sa ho lokisetsa emulsion, jelly, mafura, lotion, mahlo a hloekisang, suppository le tablet, hape e sebelisoa e le hydrophilic gel le skeleton material 1. Tokisetso ea skeleton- thaepa litokisetso tsa tokollo e tsitsitseng. E ka boela ea sebelisoa e le stabilizer lijong.
Nako ea poso: Feb-02-2023