Methylcellulose yakachena kana isina-chena fibrous kana granular powder;isina hwema uye isina kunaka.Ichi chigadzirwa chinoputika kuva chakajeka kana zvishoma turbid colloidal solution mumvura;haina kunyungudika mune absolute ethanol, chloroform kana ether.Kurumidza kupararira uye kuzvimba mumvura inopisa pa 80-90 ° C, uye nyunguduka nekukurumidza mushure mekutonhora pasi.Iyo aqueous solution yakanyatsogadzikana pakupisa kwekamuri, uye inogona gel pakupisa kwakanyanya, uye gel inogona kuchinja nemhinduro nekushisa.
Iyo ine yakanakisa wettability, dispersibility, adhesiveness, thickening, emulsification, kuchengetwa kwemvura uye firimu-kugadzira zvinhu, uye kusapindira kwemafuta.Iyo firimu yakaumbwa ine yakanakisa kuoma, kuchinjika uye pachena.Nekuti isiri-ionic, inogona kuenderana nemamwe emulsifiers, asi iri nyore kuburitsa munyu, uye mhinduro yacho yakagadzikana muhuwandu hwePH2-12.Sodium Carboxymethyl Cellulose Ichi chigadzirwa is sodium munyu we cellulose carboxymethyl ether, inova anionic cellulose ether, chena kana mukaka chena fibrous poda kana granules, ine density ye 0.5-0.7 g/cm3, inenge isinganhuhwi uye isinganakidze, ine hygroscopicity.Inonyatso kuparadzirwa mumvura kuita inoonekera colloidal mhinduro, isinganyunguriki muorganic solvents senge ethanol.
Iyo pH yemushonga wemvura ndeye 6.5-8.5.Kana pH iri> 10 kana <5, viscosity yeglue ichaderedzwa zvakanyanya, uye kushanda kwacho kwakanakisisa kana pH iri 7. Yakagadzikana kupisa, viscosity inokwira nokukurumidza pasi pe20 ° C, uye inoshanduka zvishoma nezvishoma pa45. °C.Kupisa kwenguva refu pamusoro pe80 ° C kunogona kudhindisa colloid uye kuderedza zvakanyanya viscosity uye kuita.Inonyungudika nyore nyore mumvura, uye mhinduro yacho iri pachena;yakanyanya kugadzikana mune alkaline mhinduro, asi inonyorerwa nyore hydrolyzed kana ikasangana neasidhi, uye inonaya kana iyo pH kukosha iri 2-3, uye ichaitawo ne polyvalent metal salts.Hydroxypropyl methylcellulose, inozivikanwawo se hypromellose uye cellulose hydroxypropyl methyl ether, inogadzirwa necotton cellulose yakanyanya kuchena seyakagadzirwa, iyo inonyanya kugadzirwa pasi pemamiriro ealkaline.
Soluble mumvura uye yakawanda polar c uye zviyero zvakakodzera zve ethanol / mvura, propanol / mvura, dichloroethane, nezvimwewo, isinganyunguriki mu ether, acetone, absolute ethanol, uye inoputika kuva colloid yakajeka kana zvishoma mumvura inotonhora.Mushonga wemvura une basa repamusoro, kujeka kwepamusoro uye kushanda kwakagadzikana.HPMC ine pfuma ye thermal gelation.Chigadzirwa chine aqueous solution chinopisa kuti chigadzire gel uye chinonaya, uye chinozonyungudika mushure mekutonhora.Iyo tembiricha yegelation yemhando dzakasiyana dzakasiyana.
Nguva yekutumira: Feb-24-2023