Hunhu hweHydroxyethyl Cellulose hwemuviri nemakemikari
Hunhu hwechitarisiko Chigadzirwa ichi chakachena kusvika kune yero yakapfava, chine shinda kana kuti chakasimba seupfu, hachina chepfu uye hachina kunaka
Pokunyunguduka 288-290 °C (Zvita)
Kuwanda kwemvura 0.75 g/mL pa25 °C (lit.)
Kunyungudika Inonyungudika mumvura. Hainyungudike mune zvinonyungudika zve organic. Inonyungudika mumvura inotonhora nemvura inopisa, uye kazhinji hainyungudike mune zvakawanda zvinonyungudika zve organic. Kunyungudika kunochinja zvishoma pakati pePH 2-12, asi kunyungudika kunoderera kupfuura uku. Ine mabasa ekukora, kumisa, kusunga, kubatanidza, kuparadzira, uye kuchengetedza hunyoro. Mhinduro dziri munzvimbo dzakasiyana dze viscosity dzinogona kugadzirwa. Ine munyu wakanaka kwazvo unonyungudika kune electrolytes.
Sechinhu chisiri cheionic surfactant, hydroxyethyl cellulose ine zvinhu zvinotevera pamusoro pekukora, kumisa, kusunga, kuyerera, kugadzira firimu, kuparadzira, kuchengetedza mvura uye kupa ma colloids anodzivirira:
1. HEC inonyungudika mumvura inopisa kana mvura inotonhora, inopisa zvakanyanya kana kufashaira pasina mvura, zvekuti ine hunhu hwakasiyana-siyana hwekunyungudika uye hunhu hwekusviba, uye isingapisi;
2. Haina ionic uye inogona kushanda pamwe chete nemamwe mapolymer anonyungudika mumvura, masurfactants, uye munyu. Ichinhu chinosimbisa colloidal zvakanaka pakugadzirisa electrolyte ine huwandu hwakawanda;
3. Kugona kuchengetedza mvura kwakapetwa kaviri pane kwemethyl cellulose, uye ine kurongeka kuri nani kwekuyerera kwemvura.
4. Kana tichienzanisa nemethyl cellulose inozivikanwa uye hydroxypropyl methyl cellulose, kugona kweHEC kuparadzira ndiko kwakaipisisa, asi kugona kwekudzivirira colloid ndiko kwakasimba.
Zvinodiwa zvehunyanzvi uye mwero wemhando ye hydroxyethyl cellulose
Zvinhu: Kutsiva kwemusanganiswa wemusanganiswa weindex (MS) 2.0-2.5 Hunyoro (%) ≤5 Mvura isinganyungudike (%) ≤0.5 Kukosha kwePH 6.0-8.5 Simbi inorema (ug/g) ≤20 Dota (%) ≤5 Kusviba (mpa. s) 2% 20 ℃ mvura inogadziriswa 5-60000 lead (%) ≤0.001
Mashandisirwo ehydroxyethyl cellulose
【Shandisa 1】Inoshandiswa se surfactant, latex thickener, colloidal protective agent, oil exploration fracturing fluid, polystyrene uye polyvinyl chloride dispersant, nezvimwewo.
[Kushandiswa 2] Inoshandiswa sechinhu chinosimbisa uye chinoderedza kurasikirwa nemvura yekuchera mvura uye mvura yekupedzisa, uye ine simba rinooneka rekukora mumvura yekuchera ine brine. Inogona zvakare kushandiswa sechinhu chinoderedza kurasikirwa nemvura yekuisa simende yemafuta. Inogona kubatanidzwa nemaion esimbi akawanda kuti igadzire gel.
[Kushandiswa 3] Chigadzirwa ichi chinoshandiswa sepolymeric dispersant yemvura inopwanya gel, polystyrene nepolyvinyl chloride mukuchera fracturing. Chinogona zvakare kushandiswa se emulsion thickener muindasitiri yependi, hygrostat muindasitiri yemagetsi, simende inodzivisa kuungana kweropa uye chinhu chinochengetedza hunyoro muindasitiri yekuvaka. Ceramic industry glazing uye toothpaste binder. Chinoshandiswawo zvakanyanya mukudhinda nekudhaya, machira, kugadzira mapepa, mishonga, hutsanana, chikafu, fodya, mishonga yezvipembenene uye zvinodzima moto.
[Kushandiswa 4] Inoshandiswa se surfactant, colloidal protective agent, emulsification stabilizer yevinyl chloride, vinyl acetate nedzimwe emulsions, pamwe chete ne viscosifier, dispersant, uye dispersion stabilizer ye latex. Inoshandiswa zvakanyanya mukuputira, fibers, dhayi, kugadzira mapepa, zvizoro, mishonga, mishonga yezvipembenene, nezvimwewo. Inoshandiswawo kakawanda mukutsvaga mafuta neindasitiri yemichina.
【Use 5】Hydroxyethyl cellulose ine mabasa ekushanda pamusoro, kukora, kumisa, kusunga, kusanganisa, kugadzira firimu, kuparadzira, kuchengetedza mvura uye kupa dziviriro muzvigadzirwa zvemishonga zvakasimba uye zvemvura.
Mashandisirwo ehydroxyethyl cellulose
Inoshandiswa mukugadzira machira, zvizoro, mushonga wemazino, masurfactants, latex thickeners, colloidal protective agents, mafuta anopwanya, polystyrene uye polyvinyl chloride dispersants, nezvimwewo.
Pepa reDhata rekuchengetedza reHydroxyethyl Cellulose Material (MSDS)
1. Chigadzirwa ichi chine njodzi yekuputika kweguruva. Paunenge uchibata zvakawanda kana zvakawanda, chenjerera kudzivirira kuunganidzwa kweguruva mumhepo, uye chengetedza kure nekupisa, zvipfungaidzo, marimi emoto uye magetsi asingachinji. 2. Dzivisa methylcellulose powder kuti isapinde kana kusangana nemaziso, uye pfeka ma filter masks nemagirazi ekuchengetedza panguva yekushanda. 3. Chigadzirwa ichi chinotsvedza zvikuru kana chakanyorova, uye methylcellulose powder yakadururwa inofanira kucheneswa nenguva uye kurapwa kunofanira kuitwa kuti isatsvedza.
Hunhu hwekuchengetedza uye kutakurwa kwehydroxyethyl cellulose
Kurongedza: mabhegi ane mativi maviri, bhegi rekunze repepa rakagadzirwa, bhegi remukati refirimu repolyethylene, huremu hwaro hwe20kg kana 25kg pabhegi rega rega.
Kuchengeta nekutakura: Chengeta munzvimbo ine mhepo inofefetera uye yakaoma mumba, uye teerera hunyoro. Dziviriro yemvura nezuva panguva yekutakura.
Nzira yekugadzirira hydroxyethyl cellulose
Nzira 1: Nyikai donje risina kubikwa kana kuti pulp yakacheneswa mu30% lye, bvisai mushure mehafu yeawa, modzvanya. Dzvanyai kusvika chiyero che alkali-water chasvika 1:2.8, mobva maenda kuchishandiso chekupwanya. Isai alkali fiber yakapwanywa mukettle ye reaction. Yakavharwa uye yobviswa, yozadzwa nenitrogen. Mushure mekutsiva mhepo iri mukettle ne nitrogen, dzvanyai mu ethylene oxide liquid yakatonhorera. Itai chiito pasi pekutonhorera pa25°C kwemaawa maviri kuti muwane crude hydroxyethyl cellulose. Gezai crude chigadzirwa nealcohol uye gadzirisai pH value kusvika pa4-6 nekuwedzera acetic acid. Wedzerai glyoxal kuti ikwanise kusanganiswa uye kukwegura, gezai nekukurumidza nemvura, uye pakupedzisira centrifuge, omesai, mokuyai kuti muwane low-salt hydroxyethyl cellulose.
Maitiro 2: Alkali cellulose ipolymer yechisikigo, mhete yega yega yefiber base ine mapoka matatu ehydroxyl, boka rehydroxyl rinonyanya kushanda rinoita kuti rigadzire hydroxyethyl cellulose. Nyikai donje rakasviba kana pulp yakacheneswa mu30% liquid caustic soda, ibudisei wodzvanya mushure mehafu yeawa. Dzvinyai kusvika chiyero chemvura yealkaline chasvika 1:2.8, mobva mapwanya. Isai alkali cellulose yakapwanywa mu reaction kettle, muise chisimbiso, muise vacuum cleaner, muzadzei nenitrogen, modzokorora vacuumization uye nitrogen filling kuti mudzorere mweya uri mukettle. Dzvinyai mumvura ye ethylene oxide yakatonhodzwa kare, isai mvura inotonhorera mujaketi ye reaction kettle, modzora reaction pa25°C kwemaawa maviri kuti muwane crude hydroxyethyl cellulose. crude product inogezwa nealcohol, yobviswa pH 4-6 nekuwedzera acetic acid, uye yobatanidzwa ne glyoxal yekukwegura. Zvadaro inogezwa nemvura, yobviswa mvura ne centrifugation, yoomeswa yogayiwa kuti iwane hydroxyethyl cellulose. Kushandiswa kwezvinhu zvisina kuchena (kg/t) donje rinoiswa kana pulp shoma 730-780 liquid caustic soda (30%) 2400 ethylene oxide 900 alcohol (95%) 4500 acetic acid 240 glyoxal (40%) 100-300
Hydroxyethyl cellulose upfu huchena kana hweyero husina hwema, husina kunaka uye hunoyerera zviri nyore, hunonyungudika mumvura inotonhora nemvura inopisa, kazhinji haunyungudike mune zvakawanda zvinonyungudutsa.
Hydroxyethyl cellulose (HEC) isimbi chena kana yero yakajeka, isina hwema, isina chepfu, ine fibrous kana powdery solid, inogadzirwa ne etherification reaction ye alkaline cellulose ne ethylene oxide (kana chlorohydrin). Nonionic soluble cellulose ethers. Nekuti HEC ine hunhu hwakanaka hwekukora, kumisa, kuparadzira, emulsifying, bonding, film-forming, kuchengetedza hunyoro uye kupa protective colloid, yakashandiswa zvakanyanya mukutsvaga mafuta, coatings, kuvaka, mishonga, chikafu, machira, bepa ne polymer Polymerization nedzimwe nzvimbo. 40 mesh sieving rate ≥ 99%; softening tembiricha: 135-140°C; apparent density: 0.35-0.61g/ml; pulsititure decomposition: 205-210°C; slow burn speed; equilibrium tembiricha: 23°C; 50% 6% pa rh, 29% pa 84% rh.
Maitiro ekushandisa hydroxyethyl cellulose
yakawedzerwa zvakananga panguva yekugadzira
1. Wedzera mvura yakachena mubhaketi hombe ine muchina wekusanganisa wakakura.
Hydroxyethyl cellulose
2. Tanga kusanganisa nguva dzose nekumhanya kwakaderera uye zvishoma nezvishoma sefa hydroxyethyl cellulose mumushonga zvakaenzana.
3. Ramba uchikurunga kusvika zvidimbu zvese zvanyorova.
4. Wobva wawedzera chinhu chinodzivirira mheni, zvinhu zvekushandisa zvakaita sepigments, zvinhu zvinobatsira pakupararira, mvura yeammonia.
5. Kurunga kusvika hydroxyethyl cellulose yese yanyungudika zvachose (kusimba kwemushonga kunowedzera zvakanyanya) usati wawedzera zvimwe zvikamu mufomura, wobva wakuya kusvika zvapera.
Yakashongedzerwa nedoro remumba
Nzira iyi ndeyekugadzirira doro remushonga rine huwandu hwakanyanya kutanga, wozoriisa mupendi yelatex. Chakanakira nzira iyi ndechekuti ine kuchinjika kukuru uye inogona kuwedzerwa zvakananga mupendi yapera, asi inofanira kuchengetwa zvakanaka. Matanho acho akafanana neMatanho 1-4 muNzira 1, musiyano ndewekuti hapana chikonzero chekukurunga kusvika yanyungudika zvachose kuita mushonga une viscous.
Porridge ye phenology
Sezvo organic solvents isiri organic solvents yakanaka ye hydroxyethyl cellulose, organic solvents idzi dzinogona kushandiswa kugadzira porridge. organic solvents dzinonyanya kushandiswa iorganic liquids dzakadai se ethylene glycol, propylene glycol uye film formers (senge ethylene glycol kana diethylene glycol butyl acetate) mu pendi formulations. Mvura yechando haisi solvent yakanakawo, saka mvura yechando inowanzo shandiswa pamwe chete neorganic liquids kugadzira porridge. Hydroxyethyl cellulose yeporridge inogona kuwedzerwa zvakananga mupendi, uye hydroxyethyl cellulose yakakamurwa uye yakazvimba muporridge. Kana yawedzerwa mupendi, inonyunguduka pakarepo uye inoshanda se thickener. Mushure mekuwedzera, ramba uchikurunga kusvika hydroxyethyl cellulose yanyungudika zvachose uye yafanana. Kazhinji, porridge inogadzirwa nekusanganisa zvikamu zvitanhatu zveorganic solvent kana ice water nechikamu chimwe che hydroxyethyl cellulose. Mushure memaminitsi angangoita 6-30, hydroxyethyl cellulose inozonyungudika uye inozvimba zviri pachena. Muzhizha, tembiricha yemvura inowanzo kwira zvakanyanya, saka hazvina kukodzera kushandisa porridge.
Nzira dzekudzivirira hydroxyethyl cellulose
Sezvo hydroxyethyl cellulose yakacheneswa pamusoro iri upfu kana cellulose solid, iri nyore kuibata nekuinyungudutsa mumvura chero bedzi zvinhu zvinotevera zvichinyatso tariswa.
1. Usati waisa hydroxyethyl cellulose uye mushure mekuwedzera, inofanira kumutswa nguva dzose kusvika mhinduro yacho yanyatsojeka uye yakajeka.
2. Inofanira kuseferwa zvishoma nezvishoma mutangi rekusanganisa, usawedzera zvakananga huwandu hwakawanda hwehydroxyethyl cellulose kana hydroxyethyl cellulose yakaumba mapundu nemabhora mutangi rekusanganisa. 3. Kupisa kwemvura uye kukosha kwePH mumvura zvine hukama hwakajeka nekunyungudika kwehydroxyethyl cellulose, saka kutarisisa kwakakosha kunofanirwa kupihwa.
4. Usawedzera zvimwe zvinhu zvine alkaline mumusanganiswa usati wadziiswa upfu hwe hydroxyethyl cellulose mumvura. Kukwidza pH value mushure mekudziya kunobatsira kunyungudika.
5. Nepose pazvinogoneka, wedzera mushonga unodzivirira fungus nekukurumidza sezvinobvira.
6. Pakushandisa hydroxyethyl cellulose ine viscosity yakakura, huwandu hwedoro raamai harifanirwe kupfuura 2.5-3%, zvikasadaro doro raamai richave rakaoma kubata. Hyxyethyl cellulose yakarapwa mushure mekugadziriswa kazhinji haisi nyore kugadzira mapundu kana mabhora, uye haizoumbi ma colloid asina kunyungudika mushure mekuwedzera mvura.
Inowanzo shandiswa sechinosimbisa, chinodzivirira, chinonamira, chinosimbisa uye chinowedzera pakugadzira emulsion, jelly, mafuta ekuzora, lotion, chinochenesa maziso, suppository uye piritsi, uye inoshandiswawo se hydrophilic gel uye skeleton material. 1. Kugadzirira skeleton-type skeleton release preservatives. Inogona zvakare kushandiswa sechinosimbisa chikafu.
Nguva yekutumira: Kukadzi-02-2023