I-HEC ye-Detergent

I-HEC I-Hydroxyethyl cellulose yintsinga emhlophe ukuya kumthubi eluthuthu okanye eqinileyo engumgubo. Ayinatyhefu, ayinancasa. I-ether ye-cellulose e-nonionic, i-soluble emanzini abandayo kunye nashushu ngenxa ye-hydrophilic hydroxyethyl kwi-molecule. Isisombululo saso samanzi sinexabiso le-pH le-6.5 ~ 8.5 kwaye lizinzile ukutshisa. I-HEC ine-solubility eyahlukileyo ngokweqondo lokuthatha indawo (DS). I-insoluble kwi-solvents ezininzi eziphilayo. Ineempawu zokuqina, ukumiswa, ukunamathela, i-emulsification, i-dispersion kunye nokugcinwa komswakama, njl., kwaye inokulungiselela izisombululo ezinoluhlu oluhlukeneyo lwe-viscosity. Ine-solubility yetyuwa ngokungaqhelekanga kwi-dielectric, kwaye isisombululo sayo samanzi sivunyelwe ukuba siqulethe i-concentration ephezulu yeetyuwa kwaye sihlala singatshintshi.

Iselulosi yeHydroxyethyl I-HECimveliso yemathiriyeli ekrwada

Iimathiriyeli ekrwada engundoqo: I-cellulose yesixeko (i-cotton staple okanye i-pulp ephantsi), i-alkali engamanzi, i-ethylene oxide, i-ethylene diron (40%).

Inkqubo yefayibha yealkali yipolymer yendalo, iringi nganye yefiber iqulathe amaqela amathathu e-hydroxyl, eyona ndlela isebenzayo ye-hydroxyl reaction ukwenza i-hydroxyethyl cellulose. Gxisa i-staple ye-cotton ekrwada okanye i-pulp yokutya esulungekileyo kwi-30% yealkali yolwelo kangangesiqingatha seyure kwaye uyicinezele. Gcoba kwi-1: 2.8 iimeko zamanzi e-alkaline, uze utyumze. I-cellulose ye-alkali echotshoziweyo ifakwe kwi-kettle yokusabela, itywinwe, ifakwe i-vacuumized, izaliswe nge-nitrogen, kwaye iphinde ifakwe i-vacuumized kwaye ifakwe i-nitrogen endaweni yomoya kwimeko. Ulwelo olupholileyo lwe-ethylene oxide lwacinezelwa kwibhatyi yereactor ngamanzi okupholisa, kwaye impendulo yalawulwa malunga ne-25C ye-2h ukufumana imveliso ye-hydroxyethyl fiber cable ekrwada. Iimveliso ezikrwada ezinotywala ukuhlamba, zongeza i-acetic acid neutralization kwi-VLL 46, i-jean yongeza ukuguga kwe-glyoxal crosslinking. Emva koko hlamba ngamanzi, ukuchithwa kwe-centrifugal, ukomisa, ukugaya, i-hydroxyethyl cellulose.

1.1 ialkali engamanzi

Imveliso ecocekileyo lulwelo olungenambala olucacileyo. Uxinaniso olunxulumeneyo 2. 130, indawo yokunyibilika 318.4C, indawo yokubilisa 1390C. I-Caustic soda kwimarike inesimo somjikelezo. Kwaye ulwelo luziindidi ezimbini: i-soda esulungekileyo ye-caustic emhlophe, i-flake, ibhloko, i-granular kunye nemilo yentonga, i-cytoplasm: i-caustic soda ecocekileyo ebizwa ngokuba yi-alkali yolwelo, ulwelo olungenambala olucacileyo. Iimveliso zoshishino ziqulethe ukungcola, ikakhulukazi i-sodium chloride kunye ne-sodium carbonate, kwaye ngamanye amaxesha isixa esincinci se-iron oxide.

1.2 i-ethylene oxide

I-Ethylene oxide yi-organic compound, i-chemical formula C2H40, i-carcinogen enetyhefu. I-epoxy cane iyatsha kwaye iyaqhuma, akukho lula ukuyihambisa kumgama omde, ngoko kukho indawo eyomeleleyo. Isetyenziswa ngokubanzi kumashishini okuhlamba, amayeza, ukuprinta kunye nokudaya. I-3 oxyethane (E0) yi-ether yeringi elula kakhulu, ye-heterocyclic compounds, yimveliso ebalulekileyo yepetrochemical. I-ethylene oxide lulwelo olungenambala olucacileyo kubushushu obuphantsi kunye nerhasi engenambala enevumba elirhabaxa lemilenze kwiqondo lobushushu begumbi. Uxinzelelo lomphunga lwerhasi luphezulu kwaye lunokufikelela kwi-141kPa kwi-30C. Olu xinzelelo luphezulu lomphunga lumisela ukungena okunamandla kwe-epoxy z.alkane xa kuqhunyiswa. Indawo yokunyibilika (C): -112.2. Ubuninzi bobudlelwane (amanzi -1) : 0.8711

1.3 glyoxal

Imbambo ezityheli okanye zithe saa ngokungaqhelekanga, zijike zibe mhlophe xa upholisa.

Iselulosi yeHydroxyethylUkuveliswa kwe-HECinkqubo

Bekai-cotton staple okanye i-pulp ecocekileyo kwi-30% ye-lye. Susa kwaye ucinezele. Emva koko iyatyunyuzwa kwaye isabele nge-ethylene oxide esele ipholile ukuvelisa i-hydroxyethyl cellulose ekrwada. Emva koko hlamba ngotywala kwaye ungeze i-acetic acid ukuze uhlambe kwaye ungathathi hlangothi. Emva koko yongeza ukuguga kwe-glyoxal crosslinking, ukuhlamba ngokukhawuleza ngamanzi. Ekugqibeleni, emva kwe-centrifugation dehydration, ukomisa kunye nokugaya, kugqityiweI-HECimveliso ifunyenwe.

Indlela yokuvelisa uthuthu oluphantsiI-HECI-hydroxyethyl cellulose ngenkqubo yokuhlamba eqhubekayo yeyomhlaba wobugcisa bezinto eziphathekayo. Ingxaki yobugcisa ekufuneka isonjululwe kukubonelela ngenkqubo yokuhlamba eqhubekayo kunye nokusebenza kakuhle kwemveliso, ilahleko encinci yokuhlanjwa kwe-solvent kunye nezinto eziphathekayo kunye neendleko eziphantsi ukuvelisa uthuthu oluphantsi.I-HECi-hydroxyethyl cellulose. Indlela yenkqubo yokuhlamba eqhubekayo ukuvelisa umlotha ophantsiI-HECi-hydroxyethyl cellulose ibonakaliswe kula manyathelo alandelayo: A, i-cellulose ekrwada ye-hydroxyethyl kunye ne-agent edibeneyo edibeneyo, unyango oludibanisayo ukufumana i-slurry A; B. Yongeza i-solvent yokuhlamba kwi-slurry A efunyenwe kwinyathelo A ukufumana i-slurry B; C. Yongeza i-slurry C efunyenwe kwisinyathelo B kwi-rotary pressure centrifuge kwaye ufumane i-ash ash hydroxyethyl cellulose emva kokuhlamba okuqhubekayo. Indlela inokuphucula kakhulu ukusebenza kakuhle, ukuphucula kakhulu ukulahleka kwe-solvent yokuhlamba kunye nezinto eziphathekayo, kunye nokunciphisa kakhulu umxholo womlotha wemveliso, ofanelwe ukuthandwa kunye nokusetyenziswa.